<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:country="http://xbrl.sec.gov/country/2025"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:ecd="http://xbrl.sec.gov/ecd/2025"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:regn="http://www.regeneron.com/20260331"
  xmlns:srt="http://fasb.org/srt/2025"
  xmlns:us-gaap="http://fasb.org/us-gaap/2025"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="regn-20260331.xsd" xlink:type="simple"/>
    <context id="c-1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-14</instant>
        </period>
    </context>
    <context id="c-3">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-14</instant>
        </period>
    </context>
    <context id="c-4">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-5">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-6">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-7">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-8">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-9">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-10">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">us-gaap:ProductMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-11">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">us-gaap:ProductMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-12">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-13">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-14">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">us-gaap:ProductAndServiceOtherMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-15">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">us-gaap:ProductAndServiceOtherMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-16">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-17">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:CollaborationandContractManufacturingMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-18">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:CollaborationandContractManufacturingMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-19">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-20">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-21">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-22">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-23">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AccumulatedOtherComprehensiveIncomeMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-24">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:TreasuryStockCommonMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-25">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-26">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-27">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:TreasuryStockCommonMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-28">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-29">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AccumulatedOtherComprehensiveIncomeMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-30">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-31">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-32">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-33">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-34">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AccumulatedOtherComprehensiveIncomeMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-35">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:TreasuryStockCommonMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-36">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-12-31</instant>
        </period>
    </context>
    <context id="c-37">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-12-31</instant>
        </period>
    </context>
    <context id="c-38">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-12-31</instant>
        </period>
    </context>
    <context id="c-39">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-12-31</instant>
        </period>
    </context>
    <context id="c-40">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AccumulatedOtherComprehensiveIncomeMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-12-31</instant>
        </period>
    </context>
    <context id="c-41">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:TreasuryStockCommonMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-12-31</instant>
        </period>
    </context>
    <context id="c-42">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
        </entity>
        <period>
            <instant>2024-12-31</instant>
        </period>
    </context>
    <context id="c-43">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-44">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-45">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:TreasuryStockCommonMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-46">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-47">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AccumulatedOtherComprehensiveIncomeMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-48">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonClassAMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="c-49">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="c-50">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="c-51">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="c-52">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AccumulatedOtherComprehensiveIncomeMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="c-53">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:TreasuryStockCommonMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="c-54">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="c-55">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:EYLEAHDMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-56">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:EYLEAHDMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-57">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:EyleaNetProductSalesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-58">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:EyleaNetProductSalesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-59">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:EYLEAHDAndEYLEAMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-60">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:EYLEAHDAndEYLEAMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-61">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:LIBTAYONetProductSalesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-62">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:LIBTAYONetProductSalesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-63">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:LIBTAYONetProductSalesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">us-gaap:NonUsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-64">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:LIBTAYONetProductSalesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">us-gaap:NonUsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-65">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:LIBTAYONetProductSalesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-66">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:LIBTAYONetProductSalesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-67">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:PraluentNetProductSalesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-68">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:PraluentNetProductSalesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-69">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:EvkeezaMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-70">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:EvkeezaMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-71">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:LynozyficMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-72">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:LynozyficMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-73">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:OtherProductsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-74">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:OtherProductsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-75">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis">us-gaap:TradeAccountsReceivableMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-76">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis">us-gaap:TradeAccountsReceivableMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-77">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">regn:CustomerAMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">regn:GrossProductRevenueMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-78">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">regn:CustomerAMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">regn:GrossProductRevenueMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-79">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">regn:CustomerBMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">regn:GrossProductRevenueMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-80">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">regn:CustomerBMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">regn:GrossProductRevenueMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-81">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:RangeAxis">srt:MinimumMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-82">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:RangeAxis">srt:MaximumMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-83">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-84">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-85">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ShareOfProfitLossesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-86">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ShareOfProfitLossesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-87">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ReimbursementForManufacturingOfCommercialSuppliesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-88">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ReimbursementForManufacturingOfCommercialSuppliesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-89">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ReimbursementOfResearchAndDevelopmentExpensesNetOfObligationForShareOfRDExpensesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">us-gaap:ResearchAndDevelopmentExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-90">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ReimbursementOfResearchAndDevelopmentExpensesNetOfObligationForShareOfRDExpensesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">us-gaap:ResearchAndDevelopmentExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-91">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ReimbursementOfCommercializationRelatedExpensesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">us-gaap:SellingGeneralAndAdministrativeExpensesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-92">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ReimbursementOfCommercializationRelatedExpensesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">us-gaap:SellingGeneralAndAdministrativeExpensesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-93">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:SanofiCollaborationAgreementAntibodyMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-94">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ShareOfProfitLossesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">us-gaap:NonUsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:BayerCollaborationAgreementMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-95">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ShareOfProfitLossesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">us-gaap:NonUsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:BayerCollaborationAgreementMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-96">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ReimbursementForManufacturingOfCommercialSuppliesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">us-gaap:NonUsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:BayerCollaborationAgreementMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-97">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:ReimbursementForManufacturingOfCommercialSuppliesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">us-gaap:NonUsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:BayerCollaborationAgreementMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">regn:CollaborationRevenueMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-98">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:RegeneronsObligationOfResearchAndDevelopmentExpensesNetOfReimbursementOfResearchAndDevelopmentExpensesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">us-gaap:NonUsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:BayerCollaborationAgreementMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">us-gaap:ResearchAndDevelopmentExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-99">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ProductOrServiceAxis">regn:RegeneronsObligationOfResearchAndDevelopmentExpensesNetOfReimbursementOfResearchAndDevelopmentExpensesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">us-gaap:NonUsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:BayerCollaborationAgreementMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:IncomeStatementLocationAxis">us-gaap:ResearchAndDevelopmentExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-100">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:BayerCollaborationAgreementMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-101">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis">regn:BayerCollaborationAgreementMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-102">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:EmployeeStockOptionMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-103">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:EmployeeStockOptionMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-104">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-105">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-106">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis">us-gaap:EmployeeStockOptionMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-107">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis">us-gaap:EmployeeStockOptionMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-108">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis">us-gaap:RestrictedStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-109">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis">us-gaap:RestrictedStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-110">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CorporateBondSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-111">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:USTreasuryAndGovernmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-112">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CommercialPaperMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-113">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CertificatesOfDepositMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-114">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:AssetBackedSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-115">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:SovereignDebtSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-116">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CorporateBondSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-117">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:USTreasuryAndGovernmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-118">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CommercialPaperMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-119">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CertificatesOfDepositMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-120">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:AssetBackedSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-121">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:SovereignDebtSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-122">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-123">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-124">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CorporateBondSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-125">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CorporateBondSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-126">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:USTreasuryAndGovernmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-127">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:USTreasuryAndGovernmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-128">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CommercialPaperMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-129">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CommercialPaperMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-130">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CertificatesOfDepositMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-131">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CertificatesOfDepositMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-132">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:AssetBackedSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-133">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:AssetBackedSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-134">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:SovereignDebtSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-135">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:SovereignDebtSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-136">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-137">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-138">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CorporateBondSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-139">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CorporateBondSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-140">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:USTreasuryAndGovernmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-141">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:USTreasuryAndGovernmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-142">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CommercialPaperMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-143">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CommercialPaperMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-144">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CertificatesOfDepositMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-145">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:CertificatesOfDepositMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-146">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:AssetBackedSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-147">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:AssetBackedSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-148">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel1Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:SovereignDebtSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-149">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel2Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:FinancialInstrumentAxis">us-gaap:SovereignDebtSecuritiesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-150">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="regn:ClassificationOfInvestmentAxis">regn:RestrictedMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-151">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="regn:ClassificationOfInvestmentAxis">regn:RestrictedMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-152">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-153">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:FairValueByFairValueHierarchyLevelAxis">us-gaap:FairValueInputsLevel3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-12-31</instant>
        </period>
    </context>
    <context id="c-154">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ShareRepurchaseProgramAxis">regn:ShareRepurchaseProgramFebruary2025Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-02-28</instant>
        </period>
    </context>
    <context id="c-155">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:ShareRepurchaseProgramAxis">regn:ShareRepurchaseProgramApril2026Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:SubsequentEventTypeAxis">us-gaap:SubsequentEventMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-29</instant>
        </period>
    </context>
    <context id="c-156">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:SubsequentEventTypeAxis">us-gaap:SubsequentEventMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-04-01</startDate>
            <endDate>2026-04-29</endDate>
        </period>
    </context>
    <context id="c-157">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-06-30</endDate>
        </period>
    </context>
    <context id="c-158">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
        </entity>
        <period>
            <startDate>2024-01-01</startDate>
            <endDate>2024-06-30</endDate>
        </period>
    </context>
    <context id="c-159">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:DirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-160">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:DirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-161">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:NatureOfExpenseAxis">regn:PayrollAndBenefitsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:IndirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-162">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:NatureOfExpenseAxis">regn:PayrollAndBenefitsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:IndirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-163">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:NatureOfExpenseAxis">regn:LabSuppliesAndOtherResearchAndDevelopmentCostsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:IndirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-164">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:NatureOfExpenseAxis">regn:LabSuppliesAndOtherResearchAndDevelopmentCostsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:IndirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-165">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:NatureOfExpenseAxis">regn:OccupancyAndOtherOperatingCostsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:IndirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-166">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:NatureOfExpenseAxis">regn:OccupancyAndOtherOperatingCostsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:IndirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-167">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:IndirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-168">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:ResearchAndDevelopmentExpenseTypeAxis">regn:IndirectExpenseMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-169">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:NatureOfExpenseAxis">regn:ClinicalAndManufacturingCostsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-170">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:NatureOfExpenseAxis">regn:ClinicalAndManufacturingCostsMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-171">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-172">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementBusinessSegmentsAxis">regn:ReportableSegmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="c-173">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:LitigationCaseAxis">regn:RegeneronVs.AmgenMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-15</startDate>
            <endDate>2025-05-15</endDate>
        </period>
    </context>
    <context id="c-174">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:LitigationCaseAxis">regn:RegeneronVs.AmgenMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:LitigationDamagesTypeAxis">regn:CompensatoryDamagesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-15</startDate>
            <endDate>2025-05-15</endDate>
        </period>
    </context>
    <context id="c-175">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="srt:LitigationCaseAxis">regn:RegeneronVs.AmgenMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="regn:LitigationDamagesTypeAxis">regn:PunitiveDamagesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-15</startDate>
            <endDate>2025-05-15</endDate>
        </period>
    </context>
    <context id="c-176">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ecd:IndividualAxis">regn:MichaelS.BrownM.D.Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-177">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ecd:IndividualAxis">regn:MichaelS.BrownM.D.Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-178">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ecd:IndividualAxis">regn:JosephL.GoldsteinM.D.Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-179">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ecd:IndividualAxis">regn:JosephL.GoldsteinM.D.Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-180">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ecd:IndividualAxis">regn:KathrynGuariniPh.D.Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-181">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ecd:IndividualAxis">regn:KathrynGuariniPh.D.Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <context id="c-182">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ecd:IndividualAxis">regn:MarionMcCourtMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-01-01</startDate>
            <endDate>2026-03-31</endDate>
        </period>
    </context>
    <context id="c-183">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000872589</identifier>
            <segment>
                <xbrldi:explicitMember dimension="ecd:IndividualAxis">regn:MarionMcCourtMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-03-31</instant>
        </period>
    </context>
    <unit id="shares">
        <measure>shares</measure>
    </unit>
    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="usdPerShare">
        <divide>
            <unitNumerator>
                <measure>iso4217:USD</measure>
            </unitNumerator>
            <unitDenominator>
                <measure>shares</measure>
            </unitDenominator>
        </divide>
    </unit>
    <unit id="number">
        <measure>pure</measure>
    </unit>
    <unit id="segment">
        <measure>regn:segment</measure>
    </unit>
    <unit id="count">
        <measure>regn:count</measure>
    </unit>
    <dei:EntityCentralIndexKey contextRef="c-1" id="f-26">0000872589</dei:EntityCentralIndexKey>
    <dei:CurrentFiscalYearEndDate contextRef="c-1" id="f-27">--12-31</dei:CurrentFiscalYearEndDate>
    <dei:DocumentFiscalYearFocus contextRef="c-1" id="f-28">2026</dei:DocumentFiscalYearFocus>
    <dei:DocumentFiscalPeriodFocus contextRef="c-1" id="f-29">Q1</dei:DocumentFiscalPeriodFocus>
    <dei:AmendmentFlag contextRef="c-1" id="f-30">false</dei:AmendmentFlag>
    <ecd:TrdArrDuration contextRef="c-176" id="f-624">P308D</ecd:TrdArrDuration>
    <ecd:TrdArrDuration contextRef="c-178" id="f-625">P298D</ecd:TrdArrDuration>
    <ecd:TrdArrDuration contextRef="c-180" id="f-626">P357D</ecd:TrdArrDuration>
    <ecd:TrdArrDuration contextRef="c-182" id="f-627">P442D</ecd:TrdArrDuration>
    <dei:DocumentType contextRef="c-1" id="f-1">10-Q</dei:DocumentType>
    <dei:DocumentQuarterlyReport contextRef="c-1" id="f-2">true</dei:DocumentQuarterlyReport>
    <dei:DocumentPeriodEndDate contextRef="c-1" id="f-3">2026-03-31</dei:DocumentPeriodEndDate>
    <dei:DocumentTransitionReport contextRef="c-1" id="f-4">false</dei:DocumentTransitionReport>
    <dei:EntityFileNumber contextRef="c-1" id="f-5">000-19034</dei:EntityFileNumber>
    <dei:EntityRegistrantName contextRef="c-1" id="f-6">REGENERON PHARMACEUTICALS, INC.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode contextRef="c-1" id="f-7">NY</dei:EntityIncorporationStateCountryCode>
    <dei:EntityTaxIdentificationNumber contextRef="c-1" id="f-8">13-3444607</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="c-1" id="f-9">777 Old Saw Mill River Road</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown contextRef="c-1" id="f-10">Tarrytown</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="c-1" id="f-11">NY</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="c-1" id="f-12">10591-6707</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="c-1" id="f-13">914</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="c-1" id="f-14">847-7000</dei:LocalPhoneNumber>
    <dei:Security12bTitle contextRef="c-1" id="f-15">Common Stock - par value $.001 per share</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="c-1" id="f-16">REGN</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="c-1" id="f-17">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityCurrentReportingStatus contextRef="c-1" id="f-18">Yes</dei:EntityCurrentReportingStatus>
    <dei:EntityInteractiveDataCurrent contextRef="c-1" id="f-19">Yes</dei:EntityInteractiveDataCurrent>
    <dei:EntityFilerCategory contextRef="c-1" id="f-20">Large Accelerated Filer</dei:EntityFilerCategory>
    <dei:EntitySmallBusiness contextRef="c-1" id="f-21">false</dei:EntitySmallBusiness>
    <dei:EntityEmergingGrowthCompany contextRef="c-1" id="f-22">false</dei:EntityEmergingGrowthCompany>
    <dei:EntityShellCompany contextRef="c-1" id="f-23">false</dei:EntityShellCompany>
    <dei:EntityCommonStockSharesOutstanding contextRef="c-2" decimals="0" id="f-24" unitRef="shares">1817146</dei:EntityCommonStockSharesOutstanding>
    <dei:EntityCommonStockSharesOutstanding contextRef="c-3" decimals="0" id="f-25" unitRef="shares">103021886</dei:EntityCommonStockSharesOutstanding>
    <us-gaap:CashAndCashEquivalentsAtCarryingValue contextRef="c-4" decimals="-5" id="f-31" unitRef="usd">2962600000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
    <us-gaap:CashAndCashEquivalentsAtCarryingValue contextRef="c-5" decimals="-5" id="f-32" unitRef="usd">3118100000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
    <us-gaap:MarketableSecuritiesCurrent contextRef="c-4" decimals="-5" id="f-33" unitRef="usd">5791100000</us-gaap:MarketableSecuritiesCurrent>
    <us-gaap:MarketableSecuritiesCurrent contextRef="c-5" decimals="-5" id="f-34" unitRef="usd">5487100000</us-gaap:MarketableSecuritiesCurrent>
    <us-gaap:AccountsReceivableNetCurrent contextRef="c-4" decimals="-5" id="f-35" unitRef="usd">5731000000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:AccountsReceivableNetCurrent contextRef="c-5" decimals="-5" id="f-36" unitRef="usd">5741100000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:InventoryNet contextRef="c-4" decimals="-5" id="f-37" unitRef="usd">3103600000</us-gaap:InventoryNet>
    <us-gaap:InventoryNet contextRef="c-5" decimals="-5" id="f-38" unitRef="usd">3200800000</us-gaap:InventoryNet>
    <us-gaap:PrepaidExpenseAndOtherAssetsCurrent contextRef="c-4" decimals="-5" id="f-39" unitRef="usd">620900000</us-gaap:PrepaidExpenseAndOtherAssetsCurrent>
    <us-gaap:PrepaidExpenseAndOtherAssetsCurrent contextRef="c-5" decimals="-5" id="f-40" unitRef="usd">474800000</us-gaap:PrepaidExpenseAndOtherAssetsCurrent>
    <us-gaap:AssetsCurrent contextRef="c-4" decimals="-5" id="f-41" unitRef="usd">18209200000</us-gaap:AssetsCurrent>
    <us-gaap:AssetsCurrent contextRef="c-5" decimals="-5" id="f-42" unitRef="usd">18021900000</us-gaap:AssetsCurrent>
    <us-gaap:MarketableSecuritiesNoncurrent contextRef="c-4" decimals="-5" id="f-43" unitRef="usd">9786000000</us-gaap:MarketableSecuritiesNoncurrent>
    <us-gaap:MarketableSecuritiesNoncurrent contextRef="c-5" decimals="-5" id="f-44" unitRef="usd">10260600000</us-gaap:MarketableSecuritiesNoncurrent>
    <us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization contextRef="c-4" decimals="-5" id="f-45" unitRef="usd">5266100000</us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization>
    <us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization contextRef="c-5" decimals="-5" id="f-46" unitRef="usd">5120400000</us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization>
    <us-gaap:IntangibleAssetsNetExcludingGoodwill contextRef="c-4" decimals="-5" id="f-47" unitRef="usd">1286900000</us-gaap:IntangibleAssetsNetExcludingGoodwill>
    <us-gaap:IntangibleAssetsNetExcludingGoodwill contextRef="c-5" decimals="-5" id="f-48" unitRef="usd">1257400000</us-gaap:IntangibleAssetsNetExcludingGoodwill>
    <us-gaap:DeferredIncomeTaxAssetsNet contextRef="c-4" decimals="-5" id="f-49" unitRef="usd">4190900000</us-gaap:DeferredIncomeTaxAssetsNet>
    <us-gaap:DeferredIncomeTaxAssetsNet contextRef="c-5" decimals="-5" id="f-50" unitRef="usd">4077200000</us-gaap:DeferredIncomeTaxAssetsNet>
    <us-gaap:OtherAssetsNoncurrent contextRef="c-4" decimals="-5" id="f-51" unitRef="usd">2129700000</us-gaap:OtherAssetsNoncurrent>
    <us-gaap:OtherAssetsNoncurrent contextRef="c-5" decimals="-5" id="f-52" unitRef="usd">1821200000</us-gaap:OtherAssetsNoncurrent>
    <us-gaap:Assets contextRef="c-4" decimals="-5" id="f-53" unitRef="usd">40868800000</us-gaap:Assets>
    <us-gaap:Assets contextRef="c-5" decimals="-5" id="f-54" unitRef="usd">40558700000</us-gaap:Assets>
    <us-gaap:AccountsPayableCurrent contextRef="c-4" decimals="-5" id="f-55" unitRef="usd">1027100000</us-gaap:AccountsPayableCurrent>
    <us-gaap:AccountsPayableCurrent contextRef="c-5" decimals="-5" id="f-56" unitRef="usd">939000000.0</us-gaap:AccountsPayableCurrent>
    <us-gaap:AccruedLiabilitiesAndOtherLiabilities contextRef="c-4" decimals="-5" id="f-57" unitRef="usd">2724400000</us-gaap:AccruedLiabilitiesAndOtherLiabilities>
    <us-gaap:AccruedLiabilitiesAndOtherLiabilities contextRef="c-5" decimals="-5" id="f-58" unitRef="usd">2876400000</us-gaap:AccruedLiabilitiesAndOtherLiabilities>
    <us-gaap:FinanceLeaseLiabilityCurrent contextRef="c-4" decimals="-5" id="f-59" unitRef="usd">720000000.0</us-gaap:FinanceLeaseLiabilityCurrent>
    <us-gaap:FinanceLeaseLiabilityCurrent contextRef="c-5" decimals="-5" id="f-60" unitRef="usd">0</us-gaap:FinanceLeaseLiabilityCurrent>
    <us-gaap:ContractWithCustomerLiabilityCurrent contextRef="c-4" decimals="-5" id="f-61" unitRef="usd">636200000</us-gaap:ContractWithCustomerLiabilityCurrent>
    <us-gaap:ContractWithCustomerLiabilityCurrent contextRef="c-5" decimals="-5" id="f-62" unitRef="usd">553000000.0</us-gaap:ContractWithCustomerLiabilityCurrent>
    <us-gaap:LiabilitiesCurrent contextRef="c-4" decimals="-5" id="f-63" unitRef="usd">5107700000</us-gaap:LiabilitiesCurrent>
    <us-gaap:LiabilitiesCurrent contextRef="c-5" decimals="-5" id="f-64" unitRef="usd">4368400000</us-gaap:LiabilitiesCurrent>
    <us-gaap:LongTermDebtNoncurrent contextRef="c-4" decimals="-5" id="f-65" unitRef="usd">1986200000</us-gaap:LongTermDebtNoncurrent>
    <us-gaap:LongTermDebtNoncurrent contextRef="c-5" decimals="-5" id="f-66" unitRef="usd">1985900000</us-gaap:LongTermDebtNoncurrent>
    <us-gaap:FinanceLeaseLiabilityNoncurrent contextRef="c-4" decimals="-5" id="f-67" unitRef="usd">0</us-gaap:FinanceLeaseLiabilityNoncurrent>
    <us-gaap:FinanceLeaseLiabilityNoncurrent contextRef="c-5" decimals="-5" id="f-68" unitRef="usd">720000000.0</us-gaap:FinanceLeaseLiabilityNoncurrent>
    <us-gaap:ContractWithCustomerLiabilityNoncurrent contextRef="c-4" decimals="-5" id="f-69" unitRef="usd">225100000</us-gaap:ContractWithCustomerLiabilityNoncurrent>
    <us-gaap:ContractWithCustomerLiabilityNoncurrent contextRef="c-5" decimals="-5" id="f-70" unitRef="usd">208700000</us-gaap:ContractWithCustomerLiabilityNoncurrent>
    <us-gaap:OtherLiabilitiesNoncurrent contextRef="c-4" decimals="-5" id="f-71" unitRef="usd">2126200000</us-gaap:OtherLiabilitiesNoncurrent>
    <us-gaap:OtherLiabilitiesNoncurrent contextRef="c-5" decimals="-5" id="f-72" unitRef="usd">2018800000</us-gaap:OtherLiabilitiesNoncurrent>
    <us-gaap:Liabilities contextRef="c-4" decimals="-5" id="f-73" unitRef="usd">9445200000</us-gaap:Liabilities>
    <us-gaap:Liabilities contextRef="c-5" decimals="-5" id="f-74" unitRef="usd">9301800000</us-gaap:Liabilities>
    <us-gaap:PreferredStockParOrStatedValuePerShare
      contextRef="c-4"
      decimals="INF"
      id="f-75"
      unitRef="usdPerShare">0.01</us-gaap:PreferredStockParOrStatedValuePerShare>
    <us-gaap:PreferredStockParOrStatedValuePerShare
      contextRef="c-5"
      decimals="INF"
      id="f-76"
      unitRef="usdPerShare">0.01</us-gaap:PreferredStockParOrStatedValuePerShare>
    <us-gaap:PreferredStockSharesAuthorized contextRef="c-4" decimals="-5" id="f-77" unitRef="shares">30000000.0</us-gaap:PreferredStockSharesAuthorized>
    <us-gaap:PreferredStockSharesAuthorized contextRef="c-5" decimals="-5" id="f-78" unitRef="shares">30000000.0</us-gaap:PreferredStockSharesAuthorized>
    <us-gaap:PreferredStockSharesOutstanding contextRef="c-5" decimals="-5" id="f-79" unitRef="shares">0</us-gaap:PreferredStockSharesOutstanding>
    <us-gaap:PreferredStockSharesIssued contextRef="c-5" decimals="-5" id="f-80" unitRef="shares">0</us-gaap:PreferredStockSharesIssued>
    <us-gaap:PreferredStockSharesOutstanding contextRef="c-4" decimals="-5" id="f-81" unitRef="shares">0</us-gaap:PreferredStockSharesOutstanding>
    <us-gaap:PreferredStockSharesIssued contextRef="c-4" decimals="-5" id="f-82" unitRef="shares">0</us-gaap:PreferredStockSharesIssued>
    <us-gaap:PreferredStockValue contextRef="c-4" decimals="-5" id="f-83" unitRef="usd">0</us-gaap:PreferredStockValue>
    <us-gaap:PreferredStockValue contextRef="c-5" decimals="-5" id="f-84" unitRef="usd">0</us-gaap:PreferredStockValue>
    <us-gaap:CommonStockParOrStatedValuePerShare
      contextRef="c-6"
      decimals="INF"
      id="f-85"
      unitRef="usdPerShare">0.001</us-gaap:CommonStockParOrStatedValuePerShare>
    <us-gaap:CommonStockParOrStatedValuePerShare
      contextRef="c-7"
      decimals="INF"
      id="f-86"
      unitRef="usdPerShare">0.001</us-gaap:CommonStockParOrStatedValuePerShare>
    <us-gaap:CommonStockSharesAuthorized contextRef="c-7" decimals="-5" id="f-87" unitRef="shares">40000000.0</us-gaap:CommonStockSharesAuthorized>
    <us-gaap:CommonStockSharesAuthorized contextRef="c-6" decimals="-5" id="f-88" unitRef="shares">40000000.0</us-gaap:CommonStockSharesAuthorized>
    <us-gaap:CommonStockSharesIssued contextRef="c-7" decimals="-5" id="f-89" unitRef="shares">1800000</us-gaap:CommonStockSharesIssued>
    <us-gaap:CommonStockSharesIssued contextRef="c-6" decimals="-5" id="f-90" unitRef="shares">1800000</us-gaap:CommonStockSharesIssued>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-7" decimals="-5" id="f-91" unitRef="shares">1800000</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-6" decimals="-5" id="f-92" unitRef="shares">1800000</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:CommonStockValue contextRef="c-6" decimals="-5" id="f-93" unitRef="usd">0</us-gaap:CommonStockValue>
    <us-gaap:CommonStockValue contextRef="c-7" decimals="-5" id="f-94" unitRef="usd">0</us-gaap:CommonStockValue>
    <us-gaap:CommonStockParOrStatedValuePerShare
      contextRef="c-8"
      decimals="INF"
      id="f-95"
      unitRef="usdPerShare">0.001</us-gaap:CommonStockParOrStatedValuePerShare>
    <us-gaap:CommonStockParOrStatedValuePerShare
      contextRef="c-9"
      decimals="INF"
      id="f-96"
      unitRef="usdPerShare">0.001</us-gaap:CommonStockParOrStatedValuePerShare>
    <us-gaap:CommonStockSharesAuthorized contextRef="c-9" decimals="-5" id="f-97" unitRef="shares">320000000.0</us-gaap:CommonStockSharesAuthorized>
    <us-gaap:CommonStockSharesAuthorized contextRef="c-8" decimals="-5" id="f-98" unitRef="shares">320000000.0</us-gaap:CommonStockSharesAuthorized>
    <us-gaap:CommonStockSharesIssued contextRef="c-9" decimals="-5" id="f-99" unitRef="shares">137900000</us-gaap:CommonStockSharesIssued>
    <us-gaap:CommonStockSharesIssued contextRef="c-8" decimals="-5" id="f-100" unitRef="shares">137600000</us-gaap:CommonStockSharesIssued>
    <us-gaap:CommonStockValue contextRef="c-9" decimals="-5" id="f-101" unitRef="usd">100000</us-gaap:CommonStockValue>
    <us-gaap:CommonStockValue contextRef="c-8" decimals="-5" id="f-102" unitRef="usd">100000</us-gaap:CommonStockValue>
    <us-gaap:AdditionalPaidInCapital contextRef="c-4" decimals="-5" id="f-103" unitRef="usd">14401300000</us-gaap:AdditionalPaidInCapital>
    <us-gaap:AdditionalPaidInCapital contextRef="c-5" decimals="-5" id="f-104" unitRef="usd">13995000000</us-gaap:AdditionalPaidInCapital>
    <us-gaap:RetainedEarningsAccumulatedDeficit contextRef="c-4" decimals="-5" id="f-105" unitRef="usd">36423800000</us-gaap:RetainedEarningsAccumulatedDeficit>
    <us-gaap:RetainedEarningsAccumulatedDeficit contextRef="c-5" decimals="-5" id="f-106" unitRef="usd">35797100000</us-gaap:RetainedEarningsAccumulatedDeficit>
    <us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax contextRef="c-4" decimals="-5" id="f-107" unitRef="usd">11900000</us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax>
    <us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax contextRef="c-5" decimals="-5" id="f-108" unitRef="usd">77500000</us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax>
    <us-gaap:TreasuryStockCommonShares contextRef="c-4" decimals="-5" id="f-109" unitRef="shares">34700000</us-gaap:TreasuryStockCommonShares>
    <us-gaap:TreasuryStockCommonShares contextRef="c-5" decimals="-5" id="f-110" unitRef="shares">33700000</us-gaap:TreasuryStockCommonShares>
    <us-gaap:TreasuryStockCommonValue contextRef="c-4" decimals="-5" id="f-111" unitRef="usd">19413500000</us-gaap:TreasuryStockCommonValue>
    <us-gaap:TreasuryStockCommonValue contextRef="c-5" decimals="-5" id="f-112" unitRef="usd">18612800000</us-gaap:TreasuryStockCommonValue>
    <us-gaap:StockholdersEquity contextRef="c-4" decimals="-5" id="f-113" unitRef="usd">31423600000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-5" decimals="-5" id="f-114" unitRef="usd">31256900000</us-gaap:StockholdersEquity>
    <us-gaap:LiabilitiesAndStockholdersEquity contextRef="c-4" decimals="-5" id="f-115" unitRef="usd">40868800000</us-gaap:LiabilitiesAndStockholdersEquity>
    <us-gaap:LiabilitiesAndStockholdersEquity contextRef="c-5" decimals="-5" id="f-116" unitRef="usd">40558700000</us-gaap:LiabilitiesAndStockholdersEquity>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-10" decimals="-5" id="f-117" unitRef="usd">1534500000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-11" decimals="-5" id="f-118" unitRef="usd">1415600000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-12" decimals="-5" id="f-119" unitRef="usd">1899700000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-13" decimals="-5" id="f-120" unitRef="usd">1531200000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-14" decimals="-5" id="f-121" unitRef="usd">171200000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-15" decimals="-5" id="f-122" unitRef="usd">81900000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-1" decimals="-5" id="f-123" unitRef="usd">3605400000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-16" decimals="-5" id="f-124" unitRef="usd">3028700000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-1" decimals="-5" id="f-125" unitRef="usd">1543500000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-16" decimals="-5" id="f-126" unitRef="usd">1327400000</us-gaap:ResearchAndDevelopmentExpense>
    <regn:AcquiredInProcessResearchAndDevelopment contextRef="c-1" decimals="-5" id="f-127" unitRef="usd">101900000</regn:AcquiredInProcessResearchAndDevelopment>
    <regn:AcquiredInProcessResearchAndDevelopment contextRef="c-16" decimals="-5" id="f-128" unitRef="usd">12300000</regn:AcquiredInProcessResearchAndDevelopment>
    <us-gaap:SellingGeneralAndAdministrativeExpense contextRef="c-1" decimals="-5" id="f-129" unitRef="usd">647700000</us-gaap:SellingGeneralAndAdministrativeExpense>
    <us-gaap:SellingGeneralAndAdministrativeExpense contextRef="c-16" decimals="-5" id="f-130" unitRef="usd">633000000.0</us-gaap:SellingGeneralAndAdministrativeExpense>
    <us-gaap:CostOfGoodsAndServicesSold contextRef="c-10" decimals="-5" id="f-131" unitRef="usd">373400000</us-gaap:CostOfGoodsAndServicesSold>
    <us-gaap:CostOfGoodsAndServicesSold contextRef="c-11" decimals="-5" id="f-132" unitRef="usd">265500000</us-gaap:CostOfGoodsAndServicesSold>
    <us-gaap:CostOfGoodsAndServicesSold contextRef="c-17" decimals="-5" id="f-133" unitRef="usd">296000000.0</us-gaap:CostOfGoodsAndServicesSold>
    <us-gaap:CostOfGoodsAndServicesSold contextRef="c-18" decimals="-5" id="f-134" unitRef="usd">198800000</us-gaap:CostOfGoodsAndServicesSold>
    <us-gaap:CostsAndExpenses contextRef="c-1" decimals="-5" id="f-135" unitRef="usd">2962500000</us-gaap:CostsAndExpenses>
    <us-gaap:CostsAndExpenses contextRef="c-16" decimals="-5" id="f-136" unitRef="usd">2437000000</us-gaap:CostsAndExpenses>
    <us-gaap:OperatingIncomeLoss contextRef="c-1" decimals="-5" id="f-137" unitRef="usd">642900000</us-gaap:OperatingIncomeLoss>
    <us-gaap:OperatingIncomeLoss contextRef="c-16" decimals="-5" id="f-138" unitRef="usd">591700000</us-gaap:OperatingIncomeLoss>
    <us-gaap:OtherNonoperatingIncomeExpense contextRef="c-1" decimals="-5" id="f-139" unitRef="usd">201200000</us-gaap:OtherNonoperatingIncomeExpense>
    <us-gaap:OtherNonoperatingIncomeExpense contextRef="c-16" decimals="-5" id="f-140" unitRef="usd">322000000.0</us-gaap:OtherNonoperatingIncomeExpense>
    <us-gaap:InterestExpenseNonoperating contextRef="c-1" decimals="-5" id="f-141" unitRef="usd">12900000</us-gaap:InterestExpenseNonoperating>
    <us-gaap:InterestExpenseNonoperating contextRef="c-16" decimals="-5" id="f-142" unitRef="usd">8700000</us-gaap:InterestExpenseNonoperating>
    <us-gaap:NonoperatingIncomeExpense contextRef="c-1" decimals="-5" id="f-143" unitRef="usd">188300000</us-gaap:NonoperatingIncomeExpense>
    <us-gaap:NonoperatingIncomeExpense contextRef="c-16" decimals="-5" id="f-144" unitRef="usd">313300000</us-gaap:NonoperatingIncomeExpense>
    <us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest contextRef="c-1" decimals="-5" id="f-145" unitRef="usd">831200000</us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest>
    <us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest contextRef="c-16" decimals="-5" id="f-146" unitRef="usd">905000000.0</us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest>
    <us-gaap:IncomeTaxExpenseBenefit contextRef="c-1" decimals="-5" id="f-147" unitRef="usd">104000000.0</us-gaap:IncomeTaxExpenseBenefit>
    <us-gaap:IncomeTaxExpenseBenefit contextRef="c-16" decimals="-5" id="f-148" unitRef="usd">96300000</us-gaap:IncomeTaxExpenseBenefit>
    <us-gaap:NetIncomeLoss contextRef="c-1" decimals="-5" id="f-149" unitRef="usd">727200000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss contextRef="c-16" decimals="-5" id="f-150" unitRef="usd">808700000</us-gaap:NetIncomeLoss>
    <us-gaap:EarningsPerShareBasic
      contextRef="c-1"
      decimals="2"
      id="f-151"
      unitRef="usdPerShare">6.99</us-gaap:EarningsPerShareBasic>
    <us-gaap:EarningsPerShareBasic
      contextRef="c-16"
      decimals="2"
      id="f-152"
      unitRef="usdPerShare">7.58</us-gaap:EarningsPerShareBasic>
    <us-gaap:EarningsPerShareDiluted
      contextRef="c-1"
      decimals="2"
      id="f-153"
      unitRef="usdPerShare">6.75</us-gaap:EarningsPerShareDiluted>
    <us-gaap:EarningsPerShareDiluted
      contextRef="c-16"
      decimals="2"
      id="f-154"
      unitRef="usdPerShare">7.27</us-gaap:EarningsPerShareDiluted>
    <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="c-1" decimals="-5" id="f-155" unitRef="shares">104000000.0</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
    <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="c-16" decimals="-5" id="f-156" unitRef="shares">106700000</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
    <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="c-16" decimals="-5" id="f-157" unitRef="shares">106700000</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
    <us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding contextRef="c-1" decimals="-5" id="f-158" unitRef="shares">107700000</us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding>
    <us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding contextRef="c-16" decimals="-5" id="f-159" unitRef="shares">111200000</us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding>
    <us-gaap:NetIncomeLoss contextRef="c-1" decimals="-5" id="f-160" unitRef="usd">727200000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss contextRef="c-16" decimals="-5" id="f-161" unitRef="usd">808700000</us-gaap:NetIncomeLoss>
    <us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax contextRef="c-1" decimals="-5" id="f-162" unitRef="usd">-65800000</us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax>
    <us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax contextRef="c-16" decimals="-5" id="f-163" unitRef="usd">38100000</us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax>
    <us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent contextRef="c-1" decimals="-5" id="f-164" unitRef="usd">200000</us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent>
    <us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent contextRef="c-16" decimals="-5" id="f-165" unitRef="usd">-1100000</us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent>
    <us-gaap:ComprehensiveIncomeNetOfTax contextRef="c-1" decimals="-5" id="f-166" unitRef="usd">661600000</us-gaap:ComprehensiveIncomeNetOfTax>
    <us-gaap:ComprehensiveIncomeNetOfTax contextRef="c-16" decimals="-5" id="f-167" unitRef="usd">845700000</us-gaap:ComprehensiveIncomeNetOfTax>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-19" decimals="-5" id="f-168" unitRef="shares">1800000</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:StockholdersEquity contextRef="c-19" decimals="-5" id="f-169" unitRef="usd">0</us-gaap:StockholdersEquity>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-20" decimals="-5" id="f-170" unitRef="shares">137600000</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:StockholdersEquity contextRef="c-20" decimals="-5" id="f-171" unitRef="usd">100000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-21" decimals="-5" id="f-172" unitRef="usd">13995000000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-22" decimals="-5" id="f-173" unitRef="usd">35797100000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-23" decimals="-5" id="f-174" unitRef="usd">77500000</us-gaap:StockholdersEquity>
    <us-gaap:TreasuryStockCommonShares contextRef="c-24" decimals="-5" id="f-175" unitRef="shares">33700000</us-gaap:TreasuryStockCommonShares>
    <us-gaap:StockholdersEquity contextRef="c-24" decimals="-5" id="f-176" unitRef="usd">-18612800000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-5" decimals="-5" id="f-177" unitRef="usd">31256900000</us-gaap:StockholdersEquity>
    <us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation contextRef="c-25" decimals="-5" id="f-178" unitRef="shares">300000</us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation>
    <us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation contextRef="c-26" decimals="-5" id="f-179" unitRef="usd">167000000.0</us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation>
    <us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation contextRef="c-1" decimals="-5" id="f-180" unitRef="usd">167000000.0</us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation>
    <us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation contextRef="c-25" decimals="-5" id="f-181" unitRef="shares">0</us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation>
    <us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation contextRef="c-26" decimals="-5" id="f-182" unitRef="usd">29100000</us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation>
    <us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation contextRef="c-1" decimals="-5" id="f-183" unitRef="usd">29100000</us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation>
    <regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan contextRef="c-26" decimals="-5" id="f-184" unitRef="usd">21500000</regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan>
    <regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan contextRef="c-27" decimals="-5" id="f-185" unitRef="usd">2500000</regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan>
    <regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan contextRef="c-1" decimals="-5" id="f-186" unitRef="usd">24000000.0</regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan>
    <us-gaap:StockRepurchasedDuringPeriodShares contextRef="c-27" decimals="-5" id="f-187" unitRef="shares">1000000.0</us-gaap:StockRepurchasedDuringPeriodShares>
    <us-gaap:StockRepurchasedDuringPeriodValue contextRef="c-27" decimals="-5" id="f-188" unitRef="usd">803200000</us-gaap:StockRepurchasedDuringPeriodValue>
    <us-gaap:StockRepurchasedDuringPeriodValue contextRef="c-1" decimals="-5" id="f-189" unitRef="usd">803200000</us-gaap:StockRepurchasedDuringPeriodValue>
    <us-gaap:DividendsCommonStock contextRef="c-28" decimals="-5" id="f-190" unitRef="usd">100500000</us-gaap:DividendsCommonStock>
    <us-gaap:DividendsCommonStock contextRef="c-1" decimals="-5" id="f-191" unitRef="usd">100500000</us-gaap:DividendsCommonStock>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue contextRef="c-26" decimals="-5" id="f-192" unitRef="usd">246900000</us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue contextRef="c-1" decimals="-5" id="f-193" unitRef="usd">246900000</us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue>
    <us-gaap:NetIncomeLoss contextRef="c-28" decimals="-5" id="f-194" unitRef="usd">727200000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss contextRef="c-1" decimals="-5" id="f-195" unitRef="usd">727200000</us-gaap:NetIncomeLoss>
    <us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent contextRef="c-29" decimals="-5" id="f-196" unitRef="usd">-65600000</us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent>
    <us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent contextRef="c-1" decimals="-5" id="f-197" unitRef="usd">-65600000</us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-30" decimals="-5" id="f-198" unitRef="shares">1800000</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:StockholdersEquity contextRef="c-30" decimals="-5" id="f-199" unitRef="usd">0</us-gaap:StockholdersEquity>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-31" decimals="-5" id="f-200" unitRef="shares">137900000</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:StockholdersEquity contextRef="c-31" decimals="-5" id="f-201" unitRef="usd">100000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-32" decimals="-5" id="f-202" unitRef="usd">14401300000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-33" decimals="-5" id="f-203" unitRef="usd">36423800000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-34" decimals="-5" id="f-204" unitRef="usd">11900000</us-gaap:StockholdersEquity>
    <us-gaap:TreasuryStockCommonShares contextRef="c-35" decimals="-5" id="f-205" unitRef="shares">34700000</us-gaap:TreasuryStockCommonShares>
    <us-gaap:StockholdersEquity contextRef="c-35" decimals="-5" id="f-206" unitRef="usd">-19413500000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-4" decimals="-5" id="f-207" unitRef="usd">31423600000</us-gaap:StockholdersEquity>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-36" decimals="-5" id="f-208" unitRef="shares">1800000</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:StockholdersEquity contextRef="c-36" decimals="-5" id="f-209" unitRef="usd">0</us-gaap:StockholdersEquity>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-37" decimals="-5" id="f-210" unitRef="shares">136000000.0</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:StockholdersEquity contextRef="c-37" decimals="-5" id="f-211" unitRef="usd">100000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-38" decimals="-5" id="f-212" unitRef="usd">12855900000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-39" decimals="-5" id="f-213" unitRef="usd">31672900000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-40" decimals="-5" id="f-214" unitRef="usd">-7900000</us-gaap:StockholdersEquity>
    <us-gaap:TreasuryStockCommonShares contextRef="c-41" decimals="-5" id="f-215" unitRef="shares">28200000</us-gaap:TreasuryStockCommonShares>
    <us-gaap:StockholdersEquity contextRef="c-41" decimals="-5" id="f-216" unitRef="usd">-15167400000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-42" decimals="-5" id="f-217" unitRef="usd">29353600000</us-gaap:StockholdersEquity>
    <us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation contextRef="c-43" decimals="-5" id="f-218" unitRef="shares">100000</us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation>
    <us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation contextRef="c-44" decimals="-5" id="f-219" unitRef="usd">62900000</us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation>
    <us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation contextRef="c-16" decimals="-5" id="f-220" unitRef="usd">62900000</us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation>
    <us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation contextRef="c-44" decimals="-5" id="f-221" unitRef="usd">4400000</us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation>
    <us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation contextRef="c-16" decimals="-5" id="f-222" unitRef="usd">4400000</us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation>
    <regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan contextRef="c-44" decimals="-5" id="f-223" unitRef="usd">17800000</regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan>
    <regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan contextRef="c-45" decimals="-5" id="f-224" unitRef="usd">1700000</regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan>
    <regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan contextRef="c-16" decimals="-5" id="f-225" unitRef="usd">19500000</regn:StockIssuedDistributedDuringPeriodValueEmployeeBenefitPlan>
    <us-gaap:StockRepurchasedDuringPeriodShares contextRef="c-45" decimals="-5" id="f-226" unitRef="shares">1500000</us-gaap:StockRepurchasedDuringPeriodShares>
    <us-gaap:StockRepurchasedDuringPeriodValue contextRef="c-45" decimals="-5" id="f-227" unitRef="usd">1052400000</us-gaap:StockRepurchasedDuringPeriodValue>
    <us-gaap:StockRepurchasedDuringPeriodValue contextRef="c-16" decimals="-5" id="f-228" unitRef="usd">1052400000</us-gaap:StockRepurchasedDuringPeriodValue>
    <us-gaap:DividendsCommonStock contextRef="c-44" decimals="-5" id="f-229" unitRef="usd">-1000000.0</us-gaap:DividendsCommonStock>
    <us-gaap:DividendsCommonStock contextRef="c-46" decimals="-5" id="f-230" unitRef="usd">97200000</us-gaap:DividendsCommonStock>
    <us-gaap:DividendsCommonStock contextRef="c-16" decimals="-5" id="f-231" unitRef="usd">96200000</us-gaap:DividendsCommonStock>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue contextRef="c-44" decimals="-5" id="f-232" unitRef="usd">258900000</us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue contextRef="c-16" decimals="-5" id="f-233" unitRef="usd">258900000</us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue>
    <us-gaap:NetIncomeLoss contextRef="c-46" decimals="-5" id="f-234" unitRef="usd">808700000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss contextRef="c-16" decimals="-5" id="f-235" unitRef="usd">808700000</us-gaap:NetIncomeLoss>
    <us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent contextRef="c-47" decimals="-5" id="f-236" unitRef="usd">37000000.0</us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent>
    <us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent contextRef="c-16" decimals="-5" id="f-237" unitRef="usd">37000000.0</us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-48" decimals="-5" id="f-238" unitRef="shares">1800000</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:StockholdersEquity contextRef="c-48" decimals="-5" id="f-239" unitRef="usd">0</us-gaap:StockholdersEquity>
    <us-gaap:CommonStockSharesOutstanding contextRef="c-49" decimals="-5" id="f-240" unitRef="shares">136100000</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:StockholdersEquity contextRef="c-49" decimals="-5" id="f-241" unitRef="usd">100000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-50" decimals="-5" id="f-242" unitRef="usd">13192100000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-51" decimals="-5" id="f-243" unitRef="usd">32384400000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-52" decimals="-5" id="f-244" unitRef="usd">29100000</us-gaap:StockholdersEquity>
    <us-gaap:TreasuryStockCommonShares contextRef="c-53" decimals="-5" id="f-245" unitRef="shares">29700000</us-gaap:TreasuryStockCommonShares>
    <us-gaap:StockholdersEquity contextRef="c-53" decimals="-5" id="f-246" unitRef="usd">-16218100000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="c-54" decimals="-5" id="f-247" unitRef="usd">29387600000</us-gaap:StockholdersEquity>
    <us-gaap:NetIncomeLoss contextRef="c-1" decimals="-5" id="f-248" unitRef="usd">727200000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss contextRef="c-16" decimals="-5" id="f-249" unitRef="usd">808700000</us-gaap:NetIncomeLoss>
    <us-gaap:DepreciationDepletionAndAmortization contextRef="c-1" decimals="-5" id="f-250" unitRef="usd">123200000</us-gaap:DepreciationDepletionAndAmortization>
    <us-gaap:DepreciationDepletionAndAmortization contextRef="c-16" decimals="-5" id="f-251" unitRef="usd">126900000</us-gaap:DepreciationDepletionAndAmortization>
    <us-gaap:ShareBasedCompensation contextRef="c-1" decimals="-5" id="f-252" unitRef="usd">257400000</us-gaap:ShareBasedCompensation>
    <us-gaap:ShareBasedCompensation contextRef="c-16" decimals="-5" id="f-253" unitRef="usd">255700000</us-gaap:ShareBasedCompensation>
    <regn:MarketableAndOtherSecuritiesGainLoss contextRef="c-1" decimals="-5" id="f-254" unitRef="usd">25000000.0</regn:MarketableAndOtherSecuritiesGainLoss>
    <regn:MarketableAndOtherSecuritiesGainLoss contextRef="c-16" decimals="-5" id="f-255" unitRef="usd">139900000</regn:MarketableAndOtherSecuritiesGainLoss>
    <us-gaap:OtherNoncashIncomeExpense contextRef="c-1" decimals="-5" id="f-256" unitRef="usd">-55600000</us-gaap:OtherNoncashIncomeExpense>
    <us-gaap:OtherNoncashIncomeExpense contextRef="c-16" decimals="-5" id="f-257" unitRef="usd">-3200000</us-gaap:OtherNoncashIncomeExpense>
    <us-gaap:IncreaseDecreaseInDeferredIncomeTaxes contextRef="c-1" decimals="-5" id="f-258" unitRef="usd">96000000.0</us-gaap:IncreaseDecreaseInDeferredIncomeTaxes>
    <us-gaap:IncreaseDecreaseInDeferredIncomeTaxes contextRef="c-16" decimals="-5" id="f-259" unitRef="usd">139100000</us-gaap:IncreaseDecreaseInDeferredIncomeTaxes>
    <us-gaap:IncreaseDecreaseInAccountsReceivable contextRef="c-1" decimals="-5" id="f-260" unitRef="usd">-1200000</us-gaap:IncreaseDecreaseInAccountsReceivable>
    <us-gaap:IncreaseDecreaseInAccountsReceivable contextRef="c-16" decimals="-5" id="f-261" unitRef="usd">-657800000</us-gaap:IncreaseDecreaseInAccountsReceivable>
    <us-gaap:IncreaseDecreaseInInventories contextRef="c-1" decimals="-5" id="f-262" unitRef="usd">-26600000</us-gaap:IncreaseDecreaseInInventories>
    <us-gaap:IncreaseDecreaseInInventories contextRef="c-16" decimals="-5" id="f-263" unitRef="usd">152300000</us-gaap:IncreaseDecreaseInInventories>
    <us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets contextRef="c-1" decimals="-5" id="f-264" unitRef="usd">198600000</us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets>
    <us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets contextRef="c-16" decimals="-5" id="f-265" unitRef="usd">179500000</us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets>
    <us-gaap:IncreaseDecreaseInContractWithCustomerLiability contextRef="c-1" decimals="-5" id="f-266" unitRef="usd">99600000</us-gaap:IncreaseDecreaseInContractWithCustomerLiability>
    <us-gaap:IncreaseDecreaseInContractWithCustomerLiability contextRef="c-16" decimals="-5" id="f-267" unitRef="usd">17700000</us-gaap:IncreaseDecreaseInContractWithCustomerLiability>
    <us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities contextRef="c-1" decimals="-5" id="f-268" unitRef="usd">107700000</us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities>
    <us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities contextRef="c-16" decimals="-5" id="f-269" unitRef="usd">-214100000</us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities>
    <us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities contextRef="c-1" decimals="-5" id="f-270" unitRef="usd">351700000</us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities>
    <us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities contextRef="c-16" decimals="-5" id="f-271" unitRef="usd">236400000</us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities>
    <us-gaap:NetCashProvidedByUsedInOperatingActivities contextRef="c-1" decimals="-5" id="f-272" unitRef="usd">1078900000</us-gaap:NetCashProvidedByUsedInOperatingActivities>
    <us-gaap:NetCashProvidedByUsedInOperatingActivities contextRef="c-16" decimals="-5" id="f-273" unitRef="usd">1045100000</us-gaap:NetCashProvidedByUsedInOperatingActivities>
    <us-gaap:PaymentsToAcquireMarketableSecurities contextRef="c-1" decimals="-5" id="f-274" unitRef="usd">2755900000</us-gaap:PaymentsToAcquireMarketableSecurities>
    <us-gaap:PaymentsToAcquireMarketableSecurities contextRef="c-16" decimals="-5" id="f-275" unitRef="usd">2539300000</us-gaap:PaymentsToAcquireMarketableSecurities>
    <us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities contextRef="c-1" decimals="-5" id="f-276" unitRef="usd">2606500000</us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities>
    <us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities contextRef="c-16" decimals="-5" id="f-277" unitRef="usd">3458300000</us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities>
    <us-gaap:PaymentsToAcquireProductiveAssets contextRef="c-1" decimals="-5" id="f-278" unitRef="usd">230600000</us-gaap:PaymentsToAcquireProductiveAssets>
    <us-gaap:PaymentsToAcquireProductiveAssets contextRef="c-16" decimals="-5" id="f-279" unitRef="usd">229300000</us-gaap:PaymentsToAcquireProductiveAssets>
    <regn:PaymentsToAcquireIntangibleAssets1 contextRef="c-1" decimals="-5" id="f-280" unitRef="usd">48900000</regn:PaymentsToAcquireIntangibleAssets1>
    <regn:PaymentsToAcquireIntangibleAssets1 contextRef="c-16" decimals="-5" id="f-281" unitRef="usd">42200000</regn:PaymentsToAcquireIntangibleAssets1>
    <us-gaap:NetCashProvidedByUsedInInvestingActivities contextRef="c-1" decimals="-5" id="f-282" unitRef="usd">-428900000</us-gaap:NetCashProvidedByUsedInInvestingActivities>
    <us-gaap:NetCashProvidedByUsedInInvestingActivities contextRef="c-16" decimals="-5" id="f-283" unitRef="usd">647500000</us-gaap:NetCashProvidedByUsedInInvestingActivities>
    <us-gaap:ProceedsFromIssuanceOfCommonStock contextRef="c-1" decimals="-5" id="f-284" unitRef="usd">163100000</us-gaap:ProceedsFromIssuanceOfCommonStock>
    <us-gaap:ProceedsFromIssuanceOfCommonStock contextRef="c-16" decimals="-5" id="f-285" unitRef="usd">60600000</us-gaap:ProceedsFromIssuanceOfCommonStock>
    <us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation contextRef="c-1" decimals="-5" id="f-286" unitRef="usd">73200000</us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation>
    <us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation contextRef="c-16" decimals="-5" id="f-287" unitRef="usd">4300000</us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation>
    <us-gaap:PaymentsForRepurchaseOfCommonStock contextRef="c-1" decimals="-5" id="f-288" unitRef="usd">794300000</us-gaap:PaymentsForRepurchaseOfCommonStock>
    <us-gaap:PaymentsForRepurchaseOfCommonStock contextRef="c-16" decimals="-5" id="f-289" unitRef="usd">1041400000</us-gaap:PaymentsForRepurchaseOfCommonStock>
    <us-gaap:PaymentsOfDividends contextRef="c-1" decimals="-5" id="f-290" unitRef="usd">97800000</us-gaap:PaymentsOfDividends>
    <us-gaap:PaymentsOfDividends contextRef="c-16" decimals="-5" id="f-291" unitRef="usd">93800000</us-gaap:PaymentsOfDividends>
    <us-gaap:ProceedsFromPaymentsForOtherFinancingActivities contextRef="c-1" decimals="-5" id="f-292" unitRef="usd">0</us-gaap:ProceedsFromPaymentsForOtherFinancingActivities>
    <us-gaap:ProceedsFromPaymentsForOtherFinancingActivities contextRef="c-16" decimals="-5" id="f-293" unitRef="usd">-10300000</us-gaap:ProceedsFromPaymentsForOtherFinancingActivities>
    <us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef="c-1" decimals="-5" id="f-294" unitRef="usd">-802200000</us-gaap:NetCashProvidedByUsedInFinancingActivities>
    <us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef="c-16" decimals="-5" id="f-295" unitRef="usd">-1089200000</us-gaap:NetCashProvidedByUsedInFinancingActivities>
    <us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c-1" decimals="-5" id="f-296" unitRef="usd">-900000</us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c-16" decimals="-5" id="f-297" unitRef="usd">600000</us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect contextRef="c-1" decimals="-5" id="f-298" unitRef="usd">-153100000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect contextRef="c-16" decimals="-5" id="f-299" unitRef="usd">604000000.0</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c-5" decimals="-5" id="f-300" unitRef="usd">3123700000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c-42" decimals="-5" id="f-301" unitRef="usd">2489000000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c-4" decimals="-5" id="f-302" unitRef="usd">2970600000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c-54" decimals="-5" id="f-303" unitRef="usd">3093000000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock contextRef="c-1" id="f-304">Interim Financial Statements&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;Basis of Presentation&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The interim Condensed Consolidated Financial Statements of Regeneron Pharmaceuticals, Inc. and its subsidiaries ("Regeneron," "Company," "we," "us," and "our") have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all information and disclosures necessary for a presentation of the Company's financial position, results of operations, and cash flows in conformity with accounting principles generally accepted in the United States of America. In the opinion of management, these financial statements reflect all normal recurring adjustments and accruals necessary for a fair statement of the Company's condensed consolidated financial statements for such periods. The results of operations for any interim period are not necessarily indicative of the results for the full year. The December&#160;31, 2025 Condensed Consolidated Balance Sheet data were derived from audited financial statements, but do not include all disclosures required by accounting principles generally accepted in the United States of America. These financial statements should be read in conjunction with the financial statements and notes thereto contained in the Company's Annual Report on Form 10-K for the year ended December&#160;31, 2025.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;Recently Issued Accounting Standards&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:98.822%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:49.491%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.539%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:17.982%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.539%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:27.749%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Standard/Description&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Effective Date &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Impact of Adoption on the Company's Financial Statements &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;ASU 2024-03: In November 2024, the FASB issued new guidance which requires disclosure of &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;disaggregated income statement expense&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt; information about specific categories (including purchases of inventory, employee compensation, depreciation, and intangible asset amortization) in the notes to financial statements.&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;January 1, 2027 for annual reporting periods and January 1, 2028 for interim reporting periods&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Currently evaluating impact&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock>
    <us-gaap:BasisOfAccountingPolicyPolicyTextBlock contextRef="c-1" id="f-305">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The interim Condensed Consolidated Financial Statements of Regeneron Pharmaceuticals, Inc. and its subsidiaries ("Regeneron," "Company," "we," "us," and "our") have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all information and disclosures necessary for a presentation of the Company's financial position, results of operations, and cash flows in conformity with accounting principles generally accepted in the United States of America. In the opinion of management, these financial statements reflect all normal recurring adjustments and accruals necessary for a fair statement of the Company's condensed consolidated financial statements for such periods. The results of operations for any interim period are not necessarily indicative of the results for the full year. The December&#160;31, 2025 Condensed Consolidated Balance Sheet data were derived from audited financial statements, but do not include all disclosures required by accounting principles generally accepted in the United States of America. These financial statements should be read in conjunction with the financial statements and notes thereto contained in the Company's Annual Report on Form 10-K for the year ended December&#160;31, 2025.&lt;/span&gt;&lt;/div&gt;</us-gaap:BasisOfAccountingPolicyPolicyTextBlock>
    <us-gaap:NewAccountingPronouncementsPolicyPolicyTextBlock contextRef="c-1" id="f-306">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;Recently Issued Accounting Standards&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:98.822%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:49.491%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.539%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:17.982%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.539%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:27.749%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Standard/Description&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Effective Date &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Impact of Adoption on the Company's Financial Statements &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;ASU 2024-03: In November 2024, the FASB issued new guidance which requires disclosure of &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;disaggregated income statement expense&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt; information about specific categories (including purchases of inventory, employee compensation, depreciation, and intangible asset amortization) in the notes to financial statements.&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;January 1, 2027 for annual reporting periods and January 1, 2028 for interim reporting periods&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Currently evaluating impact&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:NewAccountingPronouncementsPolicyPolicyTextBlock>
    <us-gaap:ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock contextRef="c-1" id="f-307">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:98.822%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:49.491%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.539%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:17.982%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.539%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:27.749%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Standard/Description&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Effective Date &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Impact of Adoption on the Company's Financial Statements &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;ASU 2024-03: In November 2024, the FASB issued new guidance which requires disclosure of &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;disaggregated income statement expense&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt; information about specific categories (including purchases of inventory, employee compensation, depreciation, and intangible asset amortization) in the notes to financial statements.&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;January 1, 2027 for annual reporting periods and January 1, 2028 for interim reporting periods&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Currently evaluating impact&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock>
    <us-gaap:RevenueFromContractWithCustomerTextBlock contextRef="c-1" id="f-308">Product Sales&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Net product sales consist of the following:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:63.591%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:47.405%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.949%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:17.980%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.949%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:13.382%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.949%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:13.386%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;br/&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;EYLEA&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;HD&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;468.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;306.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;EYLEA&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;473.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;736.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total EYLEA HD and EYLEA&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;941.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,042.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Libtayo&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;286.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;192.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Libtayo&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Rest of world&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;152.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;92.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:18pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total Libtayo&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Global&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;438.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;285.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Praluent&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae; &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;66.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;56.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Evkeeza&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae; &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;45.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;30.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Lynozyfic&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae; &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Global&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;11.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Other products&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Global&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;31.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,534.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,415.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:3pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;As of March&#160;31, 2026 and December&#160;31, 2025, the Company had $3.529 billion and $3.458 billion, respectively, of trade accounts receivable that were recorded within Accounts receivable, net.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company had product sales to certain customers that each accounted for more than 10% of total gross product revenue for the three months ended March&#160;31, 2026 and 2025. Sales to each of these customers as a percentage of the Company's total gross product revenue are as follows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:43.125%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:52.798%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.494%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:20.255%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.494%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:20.259%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Customer A&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;45&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;51&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;%&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Customer B&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;30&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;25&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;%&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:RevenueFromContractWithCustomerTextBlock>
    <us-gaap:DisaggregationOfRevenueTableTextBlock contextRef="c-1" id="f-309">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Net product sales consist of the following:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:63.591%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:47.405%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.949%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:17.980%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.949%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:13.382%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.949%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:13.386%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;br/&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;EYLEA&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;HD&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;468.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;306.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;EYLEA&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;473.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;736.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total EYLEA HD and EYLEA&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;941.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,042.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Libtayo&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;286.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;192.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Libtayo&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Rest of world&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;152.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;92.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:18pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total Libtayo&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Global&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;438.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;285.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Praluent&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae; &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;66.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;56.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Evkeeza&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae; &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S.&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;45.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;30.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Lynozyfic&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae; &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Global&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;11.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Other products&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Global&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;31.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,534.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,415.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Amounts recognized in the Company's Statements of Operations in connection with its Sanofi collaboration are as follows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:88.881%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:44.952%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:29.656%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:9.261%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:9.265%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:24pt"&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" rowspan="2" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Statement of Operations Classification&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Regeneron's share of profits &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Collaboration revenue&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,450.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,018.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement for manufacturing of commercial supplies&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Collaboration revenue&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;154.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;165.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Regeneron's obligation for its share of Sanofi R&amp;amp;D expenses, net of reimbursement of R&amp;amp;D expenses&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(R&amp;amp;D expense)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(16.7)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(15.5)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement of commercialization-related expenses&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reduction of SG&amp;amp;A expense&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;184.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;159.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Amounts recognized in the Company's Statements of Operations in connection with its Bayer collaboration are as follows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:88.881%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:44.952%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:29.656%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:9.261%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:9.265%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:24pt"&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" rowspan="2" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Statement of Operations Classification&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Regeneron's share of profits &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Collaboration revenue&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;240.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;317.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement for manufacturing of commercial supplies&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Collaboration revenue&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;47.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;26.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement of R&amp;amp;D expenses, net of Regeneron's obligation for its share of Bayer R&amp;amp;D expenses&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reduction of R&amp;amp;D expense/(R&amp;amp;D expense)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(9.4)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:DisaggregationOfRevenueTableTextBlock>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-55" decimals="-5" id="f-310" unitRef="usd">468400000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-56" decimals="-5" id="f-311" unitRef="usd">306800000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-57" decimals="-5" id="f-312" unitRef="usd">473100000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-58" decimals="-5" id="f-313" unitRef="usd">736000000.0</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-59" decimals="-5" id="f-314" unitRef="usd">941500000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-60" decimals="-5" id="f-315" unitRef="usd">1042800000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-61" decimals="-5" id="f-316" unitRef="usd">286100000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-62" decimals="-5" id="f-317" unitRef="usd">192500000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-63" decimals="-5" id="f-318" unitRef="usd">152100000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-64" decimals="-5" id="f-319" unitRef="usd">92600000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-65" decimals="-5" id="f-320" unitRef="usd">438200000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-66" decimals="-5" id="f-321" unitRef="usd">285100000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-67" decimals="-5" id="f-322" unitRef="usd">66600000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-68" decimals="-5" id="f-323" unitRef="usd">56800000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-69" decimals="-5" id="f-324" unitRef="usd">45700000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-70" decimals="-5" id="f-325" unitRef="usd">30900000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-71" decimals="-5" id="f-326" unitRef="usd">11200000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-72" decimals="-5" id="f-327" unitRef="usd">0</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-73" decimals="-5" id="f-328" unitRef="usd">31300000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-74" decimals="-5" id="f-329" unitRef="usd">0</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-10" decimals="-5" id="f-330" unitRef="usd">1534500000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-11" decimals="-5" id="f-331" unitRef="usd">1415600000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:AccountsReceivableNetCurrent contextRef="c-75" decimals="-6" id="f-332" unitRef="usd">3529000000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:AccountsReceivableNetCurrent contextRef="c-76" decimals="-6" id="f-333" unitRef="usd">3458000000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:SchedulesOfConcentrationOfRiskByRiskFactorTextBlock contextRef="c-1" id="f-334">Sales to each of these customers as a percentage of the Company's total gross product revenue are as follows:&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:43.125%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:52.798%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.494%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:20.255%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.494%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:20.259%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Customer A&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;45&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;51&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;%&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Customer B&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;30&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;%&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;25&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;%&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:SchedulesOfConcentrationOfRiskByRiskFactorTextBlock>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="c-77" decimals="2" id="f-335" unitRef="number">0.45</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="c-78" decimals="2" id="f-336" unitRef="number">0.51</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="c-79" decimals="2" id="f-337" unitRef="number">0.30</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="c-80" decimals="2" id="f-338" unitRef="number">0.25</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:CollaborativeArrangementDisclosureTextBlock contextRef="c-1" id="f-339">Collaboration, License, and Other Agreements&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;a. Sanofi&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company is party to a global, strategic collaboration with Sanofi to research, develop, and commercialize fully human monoclonal antibodies, which currently consists of Dupixent&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; (dupilumab), Kevzara&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:120%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;&#xae;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt; (sarilumab), and itepekimab&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-style:italic;font-weight:400;line-height:120%"&gt;.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Sanofi is generally responsible for funding 80% to 100% of agreed-upon development expenses as incurred. The Company is obligated to reimburse Sanofi for 30% to 50% of development expenses that were funded by Sanofi (i.e., "development balance") based on the Company's share of collaboration profits. The Company is required to apply 20% of its share of profits from the collaboration each calendar quarter to reimburse Sanofi for these development expenses. The Company's contingent reimbursement obligation to Sanofi in connection with the development balance was approximately $278&#160;million as of March&#160;31, 2026.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Sanofi leads commercialization activities for products under the collaboration, subject to the Company's right to co-commercialize such products. The Company co-commercializes Dupixent in the United States and in certain countries outside the United States. The Company supplies certain commercial bulk product to Sanofi. The parties equally share profits from sales within the United States. The parties share profits outside the United States on a sliding scale based on sales starting at 65% (Sanofi)/35% (Regeneron) and ending at 55% (Sanofi)/45% (Regeneron). &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Amounts recognized in the Company's Statements of Operations in connection with its Sanofi collaboration are as follows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:88.881%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:44.952%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:29.656%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:9.261%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:9.265%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:24pt"&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" rowspan="2" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Statement of Operations Classification&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Regeneron's share of profits &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Collaboration revenue&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,450.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,018.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement for manufacturing of commercial supplies&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Collaboration revenue&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;154.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;165.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Regeneron's obligation for its share of Sanofi R&amp;amp;D expenses, net of reimbursement of R&amp;amp;D expenses&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(R&amp;amp;D expense)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(16.7)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(15.5)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement of commercialization-related expenses&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reduction of SG&amp;amp;A expense&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;184.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;159.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following table summarizes contract balances in connection with the Company's Sanofi collaboration:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top:5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:55.843%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:46.020%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.108%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:24.030%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.108%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:24.034%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Accounts receivable, net &lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,713.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,610.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Deferred revenue&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;545.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;442.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;b. Bayer &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company is party to a license and collaboration agreement with Bayer for the global development and commercialization of EYLEA 8 mg (aflibercept 8 mg) and EYLEA (aflibercept) outside the United States. Agreed-upon development expenses incurred by the Company and Bayer are generally shared equally. The Company is also obligated to use commercially reasonable efforts to supply clinical and commercial bulk product to Bayer. &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Bayer is responsible for commercialization activities outside the United States, and the companies share equally in profits from such sales. Within the United States, the Company is responsible for commercialization and retains profits from such sales.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Amounts recognized in the Company's Statements of Operations in connection with its Bayer collaboration are as follows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:88.881%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:44.952%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:29.656%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:9.261%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.622%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:9.265%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:24pt"&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" rowspan="2" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Statement of Operations Classification&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Regeneron's share of profits &lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Collaboration revenue&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;240.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;317.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement for manufacturing of commercial supplies&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Collaboration revenue&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;47.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;26.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement of R&amp;amp;D expenses, net of Regeneron's obligation for its share of Bayer R&amp;amp;D expenses&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reduction of R&amp;amp;D expense/(R&amp;amp;D expense)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(9.4)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:3pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following table summarizes contract balances in connection with the Company's Bayer collaboration:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top:5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:55.843%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:46.020%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.108%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:24.030%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.108%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:24.034%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Accounts receivable, net&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;241.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;287.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Deferred revenue&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;291.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;295.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;c. Other&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;In addition to the collaboration and license agreements discussed above, the Company has collaboration and license agreements that are not individually significant to its operating results or financial condition at this time. Pursuant to the terms of those agreements, the Company may (i) incur, and/or get reimbursed for, research and development expenses, and/or (ii) be required to pay, and/or may receive, additional amounts contingent upon the occurrence of various future events (e.g., upon the achievement of development and commercial milestones), which in the aggregate could be significant. &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;text-decoration:underline"&gt;Acquired In-Process Research and Development ("IPR&amp;amp;D") Expenses&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:3pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Acquired IPR&amp;amp;D expenses for the three months ended March&#160;31, 2026 primarily related to the premium on equity securities purchased, as well as development milestone and up-front payments, in connection with collaboration and licensing agreements.&lt;/span&gt;&lt;/div&gt;</us-gaap:CollaborativeArrangementDisclosureTextBlock>
    <regn:PercentageOfTrialCostsRequiredToBeFundedByCollaboratingParty contextRef="c-81" decimals="2" id="f-340" unitRef="number">0.80</regn:PercentageOfTrialCostsRequiredToBeFundedByCollaboratingParty>
    <regn:PercentageOfTrialCostsRequiredToBeFundedByCollaboratingParty contextRef="c-82" decimals="2" id="f-341" unitRef="number">1</regn:PercentageOfTrialCostsRequiredToBeFundedByCollaboratingParty>
    <regn:PercentageOfQuarterlyProfitsRequiredToBePaidForReimbursementOfDevelopmentCosts contextRef="c-81" decimals="2" id="f-342" unitRef="number">0.30</regn:PercentageOfQuarterlyProfitsRequiredToBePaidForReimbursementOfDevelopmentCosts>
    <regn:PercentageOfQuarterlyProfitsRequiredToBePaidForReimbursementOfDevelopmentCosts contextRef="c-82" decimals="2" id="f-343" unitRef="number">0.50</regn:PercentageOfQuarterlyProfitsRequiredToBePaidForReimbursementOfDevelopmentCosts>
    <regn:PercentageOfQuarterlyProfitsRequiredToBePaidForReimbursementOfDevelopmentCosts contextRef="c-83" decimals="2" id="f-344" unitRef="number">0.20</regn:PercentageOfQuarterlyProfitsRequiredToBePaidForReimbursementOfDevelopmentCosts>
    <regn:ContingentReimbursementObligation contextRef="c-84" decimals="-6" id="f-345" unitRef="usd">278000000</regn:ContingentReimbursementObligation>
    <regn:StartingShareOfProfitsOutsideUnitedStatesBasedOnSalesForCollaboratingParty
      contextRef="c-83"
      decimals="INF"
      id="f-346"
      unitRef="number">0.65</regn:StartingShareOfProfitsOutsideUnitedStatesBasedOnSalesForCollaboratingParty>
    <regn:StartingShareOfProfitsOutsideUnitedStatesBasedOnSalesForCompany
      contextRef="c-83"
      decimals="INF"
      id="f-347"
      unitRef="number">0.35</regn:StartingShareOfProfitsOutsideUnitedStatesBasedOnSalesForCompany>
    <regn:EndingShareOfProfitsOutsideUnitedStatesBasedOnSalesForCollaboratingParty
      contextRef="c-83"
      decimals="INF"
      id="f-348"
      unitRef="number">0.55</regn:EndingShareOfProfitsOutsideUnitedStatesBasedOnSalesForCollaboratingParty>
    <regn:EndingShareOfProfitsOutsideUnitedStatesBasedOnSalesForCompany
      contextRef="c-83"
      decimals="INF"
      id="f-349"
      unitRef="number">0.45</regn:EndingShareOfProfitsOutsideUnitedStatesBasedOnSalesForCompany>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-85" decimals="-5" id="f-350" unitRef="usd">1450800000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-86" decimals="-5" id="f-351" unitRef="usd">1018200000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-87" decimals="-5" id="f-352" unitRef="usd">154300000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-88" decimals="-5" id="f-353" unitRef="usd">165000000.0</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-89" decimals="-5" id="f-354" unitRef="usd">-16700000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-90" decimals="-5" id="f-355" unitRef="usd">-15500000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-91" decimals="-5" id="f-356" unitRef="usd">184100000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-92" decimals="-5" id="f-357" unitRef="usd">159200000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:ContractWithCustomerAssetAndLiabilityTableTextBlock contextRef="c-1" id="f-358">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following table summarizes contract balances in connection with the Company's Sanofi collaboration:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top:5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:55.843%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:46.020%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.108%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:24.030%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.108%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:24.034%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Accounts receivable, net &lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,713.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,610.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Deferred revenue&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;545.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;442.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:3pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following table summarizes contract balances in connection with the Company's Bayer collaboration:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top:5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:55.843%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:46.020%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.108%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:24.030%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.108%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:24.034%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Accounts receivable, net&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;241.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;287.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Deferred revenue&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;291.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;295.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ContractWithCustomerAssetAndLiabilityTableTextBlock>
    <us-gaap:AccountsReceivableNetCurrent contextRef="c-84" decimals="-5" id="f-359" unitRef="usd">1713200000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:AccountsReceivableNetCurrent contextRef="c-93" decimals="-5" id="f-360" unitRef="usd">1610600000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:ContractWithCustomerLiability contextRef="c-84" decimals="-5" id="f-361" unitRef="usd">545400000</us-gaap:ContractWithCustomerLiability>
    <us-gaap:ContractWithCustomerLiability contextRef="c-93" decimals="-5" id="f-362" unitRef="usd">442300000</us-gaap:ContractWithCustomerLiability>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-94" decimals="-5" id="f-363" unitRef="usd">240000000.0</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-95" decimals="-5" id="f-364" unitRef="usd">317300000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-96" decimals="-5" id="f-365" unitRef="usd">47300000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-97" decimals="-5" id="f-366" unitRef="usd">26600000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-98" decimals="-5" id="f-367" unitRef="usd">1000000.0</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="c-99" decimals="-5" id="f-368" unitRef="usd">-9400000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:AccountsReceivableNetCurrent contextRef="c-100" decimals="-5" id="f-369" unitRef="usd">241100000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:AccountsReceivableNetCurrent contextRef="c-101" decimals="-5" id="f-370" unitRef="usd">287600000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:ContractWithCustomerLiability contextRef="c-100" decimals="-5" id="f-371" unitRef="usd">291700000</us-gaap:ContractWithCustomerLiability>
    <us-gaap:ContractWithCustomerLiability contextRef="c-101" decimals="-5" id="f-372" unitRef="usd">295700000</us-gaap:ContractWithCustomerLiability>
    <us-gaap:EarningsPerShareTextBlock contextRef="c-1" id="f-373">Net Income Per Share &lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The calculations of basic and diluted net income per share are as follows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:11pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:63.299%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:64.719%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.954%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:14.835%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.954%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:14.838%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions, except per share data)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Net income - basic and diluted&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;727.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;808.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Weighted average shares - basic&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;104.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;106.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Effect of dilutive securities:&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Stock options&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Restricted stock awards and restricted stock units&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Weighted average shares - diluted&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;107.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;111.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Net income per share - basic&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;6.99&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;7.58&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Net income per share - diluted&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;6.75&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;7.27&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:3pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Shares which have been excluded from diluted per share amounts because their effect would have been antidilutive include the following:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:59.498%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:65.484%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.028%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:14.379%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.028%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:14.381%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(Shares in millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Stock options&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Restricted stock awards and restricted stock units&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:EarningsPerShareTextBlock>
    <us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock contextRef="c-1" id="f-374">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The calculations of basic and diluted net income per share are as follows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:6pt;margin-top:11pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:63.299%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:64.719%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.954%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:14.835%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.954%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:14.838%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions, except per share data)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Net income - basic and diluted&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;727.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;808.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Weighted average shares - basic&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;104.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;106.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Effect of dilutive securities:&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Stock options&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Restricted stock awards and restricted stock units&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Weighted average shares - diluted&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;107.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;111.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Net income per share - basic&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;6.99&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;7.58&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Net income per share - diluted&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;6.75&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;7.27&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock>
    <us-gaap:NetIncomeLoss contextRef="c-1" decimals="-5" id="f-375" unitRef="usd">727200000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss contextRef="c-16" decimals="-5" id="f-376" unitRef="usd">808700000</us-gaap:NetIncomeLoss>
    <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="c-1" decimals="-5" id="f-377" unitRef="shares">104000000.0</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
    <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="c-16" decimals="-5" id="f-378" unitRef="shares">106700000</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
    <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="c-16" decimals="-5" id="f-379" unitRef="shares">106700000</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
    <us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
      contextRef="c-102"
      decimals="-5"
      id="f-380"
      unitRef="shares">2600000</us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements>
    <us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
      contextRef="c-103"
      decimals="-5"
      id="f-381"
      unitRef="shares">2500000</us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements>
    <us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
      contextRef="c-104"
      decimals="-5"
      id="f-382"
      unitRef="shares">1100000</us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements>
    <us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
      contextRef="c-105"
      decimals="-5"
      id="f-383"
      unitRef="shares">2000000.0</us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements>
    <us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding contextRef="c-1" decimals="-5" id="f-384" unitRef="shares">107700000</us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding>
    <us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding contextRef="c-16" decimals="-5" id="f-385" unitRef="shares">111200000</us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding>
    <us-gaap:EarningsPerShareBasic
      contextRef="c-1"
      decimals="2"
      id="f-386"
      unitRef="usdPerShare">6.99</us-gaap:EarningsPerShareBasic>
    <us-gaap:EarningsPerShareBasic
      contextRef="c-16"
      decimals="2"
      id="f-387"
      unitRef="usdPerShare">7.58</us-gaap:EarningsPerShareBasic>
    <us-gaap:EarningsPerShareDiluted
      contextRef="c-1"
      decimals="2"
      id="f-388"
      unitRef="usdPerShare">6.75</us-gaap:EarningsPerShareDiluted>
    <us-gaap:EarningsPerShareDiluted
      contextRef="c-16"
      decimals="2"
      id="f-389"
      unitRef="usdPerShare">7.27</us-gaap:EarningsPerShareDiluted>
    <us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock contextRef="c-1" id="f-390">&lt;div style="margin-bottom:8pt;margin-top:3pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Shares which have been excluded from diluted per share amounts because their effect would have been antidilutive include the following:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:59.498%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:65.484%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.028%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:14.379%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.028%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:14.381%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(Shares in millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Stock options&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Restricted stock awards and restricted stock units&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock>
    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
      contextRef="c-106"
      decimals="-5"
      id="f-391"
      unitRef="shares">3700000</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
      contextRef="c-107"
      decimals="-5"
      id="f-392"
      unitRef="shares">4800000</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
      contextRef="c-108"
      decimals="-5"
      id="f-393"
      unitRef="shares">0</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
      contextRef="c-109"
      decimals="-5"
      id="f-394"
      unitRef="shares">1000000.0</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
    <us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock contextRef="c-1" id="f-395">Marketable Securities&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Marketable securities as of March&#160;31, 2026 and December&#160;31, 2025 consist of both available-for-sale debt securities of investment grade issuers (see below and Note 6) as well as equity securities of publicly traded companies (see Note 6).&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following tables summarize the Company's investments in available-for-sale debt securities:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top:5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:94.729%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:46.430%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.571%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:11.245%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.571%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:11.245%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.571%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:11.245%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.571%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:11.251%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Amortized&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Unrealized&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Fair&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%;text-decoration:underline"&gt;As of March&#160;31, 2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Cost Basis&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Gains&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Losses&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Value&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Corporate bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,606.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;35.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(22.6)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,619.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S. government and government agency obligations&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,667.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(5.0)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,667.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Commercial paper&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;689.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.2)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;689.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Certificates of deposit&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;248.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.2)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;248.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Asset-backed securities&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;219.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.1)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;219.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Sovereign bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;84.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.2)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;84.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,515.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;40.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(28.3)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,528.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%;text-decoration:underline"&gt;As of December&#160;31, 2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Corporate bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,141.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;80.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(2.4)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,219.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S. government and government agency obligations&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4,352.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.1)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4,367.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Commercial paper&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;540.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;541.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Certificates of deposit&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;265.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;265.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Asset-backed securities&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;241.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;242.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Sovereign bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;76.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;76.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,617.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;98.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(2.5)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,713.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company classifies its investments in available-for-sale debt securities based on their contractual maturity dates. The available-for-sale debt securities as of March&#160;31, 2026 mature at various dates through December 2032. The fair values of available-for-sale debt securities by contractual maturity consist of the following:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:64.761%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:54.656%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.928%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:19.893%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.928%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:19.895%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Maturities within one year&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;5,791.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;5,487.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Maturities after one year through five years&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;9,638.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,224.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Maturities after five years&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;98.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,528.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,713.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock>
    <us-gaap:DebtSecuritiesAvailableForSaleTableTextBlock contextRef="c-1" id="f-396">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following tables summarize the Company's investments in available-for-sale debt securities:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top:5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:94.729%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:46.430%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.571%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:11.245%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.571%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:11.245%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.571%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:11.245%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.571%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:11.251%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Amortized&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Unrealized&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Fair&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%;text-decoration:underline"&gt;As of March&#160;31, 2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Cost Basis&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Gains&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Losses&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Value&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Corporate bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,606.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;35.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(22.6)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,619.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S. government and government agency obligations&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,667.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(5.0)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,667.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Commercial paper&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;689.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.2)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;689.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Certificates of deposit&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;248.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.2)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;248.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Asset-backed securities&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;219.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.1)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;219.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Sovereign bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;84.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.2)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;84.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,515.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;40.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(28.3)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,528.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%;text-decoration:underline"&gt;As of December&#160;31, 2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Corporate bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,141.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;80.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(2.4)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,219.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S. government and government agency obligations&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4,352.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(0.1)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4,367.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Commercial paper&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;540.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;541.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Certificates of deposit&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;265.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;265.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Asset-backed securities&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;241.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;242.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Sovereign bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;76.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;0.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;76.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,617.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;98.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(2.5)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,713.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:DebtSecuritiesAvailableForSaleTableTextBlock>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-110" decimals="-5" id="f-397" unitRef="usd">10606900000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-110" decimals="-5" id="f-398" unitRef="usd">35300000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-110" decimals="-5" id="f-399" unitRef="usd">22600000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-110" decimals="-5" id="f-400" unitRef="usd">10619600000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-111" decimals="-5" id="f-401" unitRef="usd">3667900000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-111" decimals="-5" id="f-402" unitRef="usd">4700000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-111" decimals="-5" id="f-403" unitRef="usd">5000000.0</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-111" decimals="-5" id="f-404" unitRef="usd">3667600000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-112" decimals="-5" id="f-405" unitRef="usd">689300000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-112" decimals="-5" id="f-406" unitRef="usd">0</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-112" decimals="-5" id="f-407" unitRef="usd">200000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-112" decimals="-5" id="f-408" unitRef="usd">689100000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-113" decimals="-5" id="f-409" unitRef="usd">248200000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-113" decimals="-5" id="f-410" unitRef="usd">0</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-113" decimals="-5" id="f-411" unitRef="usd">200000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-113" decimals="-5" id="f-412" unitRef="usd">248000000.0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-114" decimals="-5" id="f-413" unitRef="usd">219200000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-114" decimals="-5" id="f-414" unitRef="usd">600000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-114" decimals="-5" id="f-415" unitRef="usd">100000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-114" decimals="-5" id="f-416" unitRef="usd">219700000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-115" decimals="-5" id="f-417" unitRef="usd">84300000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-115" decimals="-5" id="f-418" unitRef="usd">300000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-115" decimals="-5" id="f-419" unitRef="usd">200000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-115" decimals="-5" id="f-420" unitRef="usd">84400000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-4" decimals="-5" id="f-421" unitRef="usd">15515800000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-4" decimals="-5" id="f-422" unitRef="usd">40900000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-4" decimals="-5" id="f-423" unitRef="usd">28300000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-4" decimals="-5" id="f-424" unitRef="usd">15528400000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-116" decimals="-5" id="f-425" unitRef="usd">10141000000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-116" decimals="-5" id="f-426" unitRef="usd">80900000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-116" decimals="-5" id="f-427" unitRef="usd">2400000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-116" decimals="-5" id="f-428" unitRef="usd">10219500000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-117" decimals="-5" id="f-429" unitRef="usd">4352200000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-117" decimals="-5" id="f-430" unitRef="usd">15200000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-117" decimals="-5" id="f-431" unitRef="usd">100000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-117" decimals="-5" id="f-432" unitRef="usd">4367300000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-118" decimals="-5" id="f-433" unitRef="usd">540800000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-118" decimals="-5" id="f-434" unitRef="usd">300000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-118" decimals="-5" id="f-435" unitRef="usd">0</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-118" decimals="-5" id="f-436" unitRef="usd">541100000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-119" decimals="-5" id="f-437" unitRef="usd">265700000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-119" decimals="-5" id="f-438" unitRef="usd">200000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-119" decimals="-5" id="f-439" unitRef="usd">0</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-119" decimals="-5" id="f-440" unitRef="usd">265900000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-120" decimals="-5" id="f-441" unitRef="usd">241400000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-120" decimals="-5" id="f-442" unitRef="usd">1400000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-120" decimals="-5" id="f-443" unitRef="usd">0</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-120" decimals="-5" id="f-444" unitRef="usd">242800000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-121" decimals="-5" id="f-445" unitRef="usd">76300000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-121" decimals="-5" id="f-446" unitRef="usd">500000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-121" decimals="-5" id="f-447" unitRef="usd">0</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-121" decimals="-5" id="f-448" unitRef="usd">76800000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis contextRef="c-5" decimals="-5" id="f-449" unitRef="usd">15617400000</us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax contextRef="c-5" decimals="-5" id="f-450" unitRef="usd">98500000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax>
    <us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax contextRef="c-5" decimals="-5" id="f-451" unitRef="usd">2500000</us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-5" decimals="-5" id="f-452" unitRef="usd">15713400000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock contextRef="c-1" id="f-453">The fair values of available-for-sale debt securities by contractual maturity consist of the following:&lt;div style="margin-bottom:8pt;margin-top:13pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:64.761%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:54.656%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.928%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:19.893%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.928%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:19.895%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Maturities within one year&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;5,791.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;5,487.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Maturities after one year through five years&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;9,638.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,224.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Maturities after five years&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;98.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,528.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;15,713.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock>
    <us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue contextRef="c-4" decimals="-5" id="f-454" unitRef="usd">5791100000</us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue>
    <us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue contextRef="c-5" decimals="-5" id="f-455" unitRef="usd">5487100000</us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue>
    <us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue contextRef="c-4" decimals="-5" id="f-456" unitRef="usd">9638900000</us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue>
    <us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue contextRef="c-5" decimals="-5" id="f-457" unitRef="usd">10224800000</us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue>
    <regn:DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYear5 contextRef="c-4" decimals="-5" id="f-458" unitRef="usd">98400000</regn:DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYear5>
    <regn:DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYear5 contextRef="c-5" decimals="-5" id="f-459" unitRef="usd">1500000</regn:DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYear5>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-4" decimals="-5" id="f-460" unitRef="usd">15528400000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-5" decimals="-5" id="f-461" unitRef="usd">15713400000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:FairValueDisclosuresTextBlock contextRef="c-1" id="f-462">Fair Value Measurements&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The table below summarizes the Company's assets which are measured at fair value on a recurring basis. The following fair value hierarchy is used to classify assets and liabilities, based on inputs to valuation techniques utilized to measure fair value:&lt;/span&gt;&lt;/div&gt;&lt;div style="padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt"&gt;Level 1 - Quoted prices in active markets for identical assets or liabilities&lt;/span&gt;&lt;/div&gt;&lt;div style="padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt"&gt;Level 2 - Significant other observable inputs, such as quoted market prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, or model-based valuations in which significant inputs used are observable&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt"&gt;Level 3 - Significant other unobservable inputs&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top:5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:84.350%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:44.307%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.666%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.231%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.666%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.231%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.666%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.233%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Fair&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Fair Value Measurements at Reporting Date&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%;text-decoration:underline"&gt;As of March&#160;31, 2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Value&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Level 1&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Level 2&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Cash equivalents&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,865.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;613.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,252.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Available-for-sale debt securities:&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Corporate bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,619.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,619.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 22pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S. government and government agency obligations&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,667.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,667.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Commercial paper&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;689.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;689.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Certificates of deposit&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;248.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;248.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Asset-backed securities&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;219.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;219.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Sovereign bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;84.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;84.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Equity securities&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;48.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;48.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;div&gt;&lt;span&gt;&lt;br/&gt;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;17,442.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;662.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;16,780.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%;text-decoration:underline"&gt;As of December&#160;31, 2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Cash equivalents&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2,121.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,127.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;993.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Available-for-sale debt securities:&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Corporate bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,219.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,219.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 22pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S. government and government agency obligations&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4,367.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4,367.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Commercial paper&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;541.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;541.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Certificates of deposit&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;265.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;265.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Asset-backed securities&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;242.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;242.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Sovereign bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;76.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;76.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Equity securities&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;34.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;34.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;div&gt;&lt;span&gt;&lt;br/&gt;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;17,869.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,162.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;16,707.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:3pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="21" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:4.5pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a) &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:100%"&gt;Includes equity securities of $47.5 million and $33.3 million as of March&#160;31, 2026 and December&#160;31, 2025, respectively, which were subject to transfer restrictions that expired in April 2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;In addition to the investments summarized in the table above, the Company recorded the following investments within Other noncurrent assets:&lt;/span&gt;&lt;/div&gt;&lt;div style="padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt"&gt;As of March&#160;31, 2026 and December&#160;31, 2025, $571.6 million and $334.0 million, respectively, of equity securities that do not have a readily determinable fair value. The change in carrying value of such investments was primarily the result of additional purchases.&lt;/span&gt;&lt;/div&gt;&lt;div style="padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt"&gt;As of March&#160;31, 2026 and December&#160;31, 2025, equity securities held through ownership interest in an investment fund of $169.9 million and $147.5 million, respectively, which are measured at fair value based on Level 3 inputs. The change in carrying value was primarily the result of additional purchases by the fund.&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:justify"&gt;&lt;span&gt;&lt;br/&gt;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;During the three months ended March&#160;31, 2026 and 2025, the Company recognized $24.0 million and $139.7&#160;million of net unrealized gains, respectively, in Other income (expense), net, related to investments in equity securities that were still held as of the period end date.&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;Other Fair Value Disclosures&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The fair value of the Company's long-term debt, which was determined based on Level 2 inputs, was estimated to be $1.564 billion and $1.576&#160;billion as of March&#160;31, 2026 and December&#160;31, 2025, respectively. The carrying value was $1.986&#160;billion as of March&#160;31, 2026 and December&#160;31, 2025.&lt;/span&gt;&lt;/div&gt;</us-gaap:FairValueDisclosuresTextBlock>
    <us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock contextRef="c-1" id="f-463">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The table below summarizes the Company's assets which are measured at fair value on a recurring basis. The following fair value hierarchy is used to classify assets and liabilities, based on inputs to valuation techniques utilized to measure fair value:&lt;/span&gt;&lt;/div&gt;&lt;div style="padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt"&gt;Level 1 - Quoted prices in active markets for identical assets or liabilities&lt;/span&gt;&lt;/div&gt;&lt;div style="padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt"&gt;Level 2 - Significant other observable inputs, such as quoted market prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, or model-based valuations in which significant inputs used are observable&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;padding-left:36pt;text-align:justify;text-indent:-18pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;&#x2022;&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt"&gt;Level 3 - Significant other unobservable inputs&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top:5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:84.350%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:44.307%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.666%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.231%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.666%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.231%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.666%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.233%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Fair&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Fair Value Measurements at Reporting Date&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%;text-decoration:underline"&gt;As of March&#160;31, 2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Value&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Level 1&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Level 2&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Cash equivalents&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,865.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;613.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,252.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Available-for-sale debt securities:&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Corporate bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,619.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,619.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 22pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S. government and government agency obligations&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,667.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,667.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Commercial paper&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;689.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;689.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Certificates of deposit&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;248.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;248.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Asset-backed securities&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;219.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;219.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Sovereign bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;84.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;84.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Equity securities&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;48.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;48.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;div&gt;&lt;span&gt;&lt;br/&gt;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;17,442.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;662.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;16,780.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%;text-decoration:underline"&gt;As of December&#160;31, 2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Cash equivalents&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2,121.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,127.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;993.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Available-for-sale debt securities:&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Corporate bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,219.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;10,219.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 22pt;text-align:left;text-indent:-9pt;vertical-align:top"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;U.S. government and government agency obligations&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4,367.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;4,367.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Commercial paper&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;541.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;541.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Certificates of deposit&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;265.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;265.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Asset-backed securities&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;242.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;242.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Sovereign bonds&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;76.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;76.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Equity securities&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;34.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;34.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;&#x2014;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;div&gt;&lt;span&gt;&lt;br/&gt;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;17,869.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,162.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;16,707.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:3pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="21" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:4.5pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a) &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:100%"&gt;Includes equity securities of $47.5 million and $33.3 million as of March&#160;31, 2026 and December&#160;31, 2025, respectively, which were subject to transfer restrictions that expired in April 2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock>
    <us-gaap:CashAndCashEquivalentsFairValueDisclosure contextRef="c-4" decimals="-5" id="f-464" unitRef="usd">1865300000</us-gaap:CashAndCashEquivalentsFairValueDisclosure>
    <us-gaap:CashAndCashEquivalentsFairValueDisclosure contextRef="c-122" decimals="-5" id="f-465" unitRef="usd">613300000</us-gaap:CashAndCashEquivalentsFairValueDisclosure>
    <us-gaap:CashAndCashEquivalentsFairValueDisclosure contextRef="c-123" decimals="-5" id="f-466" unitRef="usd">1252000000</us-gaap:CashAndCashEquivalentsFairValueDisclosure>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-110" decimals="-5" id="f-467" unitRef="usd">10619600000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-124" decimals="-5" id="f-468" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-125" decimals="-5" id="f-469" unitRef="usd">10619600000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-111" decimals="-5" id="f-470" unitRef="usd">3667600000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-126" decimals="-5" id="f-471" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-127" decimals="-5" id="f-472" unitRef="usd">3667600000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-112" decimals="-5" id="f-473" unitRef="usd">689100000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-128" decimals="-5" id="f-474" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-129" decimals="-5" id="f-475" unitRef="usd">689100000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-113" decimals="-5" id="f-476" unitRef="usd">248000000.0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-130" decimals="-5" id="f-477" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-131" decimals="-5" id="f-478" unitRef="usd">248000000.0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-114" decimals="-5" id="f-479" unitRef="usd">219700000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-132" decimals="-5" id="f-480" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-133" decimals="-5" id="f-481" unitRef="usd">219700000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-115" decimals="-5" id="f-482" unitRef="usd">84400000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-134" decimals="-5" id="f-483" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-135" decimals="-5" id="f-484" unitRef="usd">84400000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:EquitySecuritiesFVNINoncurrent contextRef="c-4" decimals="-5" id="f-485" unitRef="usd">48700000</us-gaap:EquitySecuritiesFVNINoncurrent>
    <us-gaap:EquitySecuritiesFVNINoncurrent contextRef="c-122" decimals="-5" id="f-486" unitRef="usd">48700000</us-gaap:EquitySecuritiesFVNINoncurrent>
    <us-gaap:EquitySecuritiesFVNINoncurrent contextRef="c-123" decimals="-5" id="f-487" unitRef="usd">0</us-gaap:EquitySecuritiesFVNINoncurrent>
    <us-gaap:AssetsFairValueDisclosure contextRef="c-4" decimals="-5" id="f-488" unitRef="usd">17442400000</us-gaap:AssetsFairValueDisclosure>
    <us-gaap:AssetsFairValueDisclosure contextRef="c-122" decimals="-5" id="f-489" unitRef="usd">662000000.0</us-gaap:AssetsFairValueDisclosure>
    <us-gaap:AssetsFairValueDisclosure contextRef="c-123" decimals="-5" id="f-490" unitRef="usd">16780400000</us-gaap:AssetsFairValueDisclosure>
    <us-gaap:CashAndCashEquivalentsFairValueDisclosure contextRef="c-5" decimals="-5" id="f-491" unitRef="usd">2121600000</us-gaap:CashAndCashEquivalentsFairValueDisclosure>
    <us-gaap:CashAndCashEquivalentsFairValueDisclosure contextRef="c-136" decimals="-5" id="f-492" unitRef="usd">1127700000</us-gaap:CashAndCashEquivalentsFairValueDisclosure>
    <us-gaap:CashAndCashEquivalentsFairValueDisclosure contextRef="c-137" decimals="-5" id="f-493" unitRef="usd">993900000</us-gaap:CashAndCashEquivalentsFairValueDisclosure>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-116" decimals="-5" id="f-494" unitRef="usd">10219500000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-138" decimals="-5" id="f-495" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-139" decimals="-5" id="f-496" unitRef="usd">10219500000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-117" decimals="-5" id="f-497" unitRef="usd">4367300000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-140" decimals="-5" id="f-498" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-141" decimals="-5" id="f-499" unitRef="usd">4367300000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-118" decimals="-5" id="f-500" unitRef="usd">541100000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-142" decimals="-5" id="f-501" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-143" decimals="-5" id="f-502" unitRef="usd">541100000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-119" decimals="-5" id="f-503" unitRef="usd">265900000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-144" decimals="-5" id="f-504" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-145" decimals="-5" id="f-505" unitRef="usd">265900000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-120" decimals="-5" id="f-506" unitRef="usd">242800000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-146" decimals="-5" id="f-507" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-147" decimals="-5" id="f-508" unitRef="usd">242800000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-121" decimals="-5" id="f-509" unitRef="usd">76800000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-148" decimals="-5" id="f-510" unitRef="usd">0</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:AvailableForSaleSecuritiesDebtSecurities contextRef="c-149" decimals="-5" id="f-511" unitRef="usd">76800000</us-gaap:AvailableForSaleSecuritiesDebtSecurities>
    <us-gaap:EquitySecuritiesFVNINoncurrent contextRef="c-5" decimals="-5" id="f-512" unitRef="usd">34300000</us-gaap:EquitySecuritiesFVNINoncurrent>
    <us-gaap:EquitySecuritiesFVNINoncurrent contextRef="c-136" decimals="-5" id="f-513" unitRef="usd">34300000</us-gaap:EquitySecuritiesFVNINoncurrent>
    <us-gaap:EquitySecuritiesFVNINoncurrent contextRef="c-137" decimals="-5" id="f-514" unitRef="usd">0</us-gaap:EquitySecuritiesFVNINoncurrent>
    <us-gaap:AssetsFairValueDisclosure contextRef="c-5" decimals="-5" id="f-515" unitRef="usd">17869300000</us-gaap:AssetsFairValueDisclosure>
    <us-gaap:AssetsFairValueDisclosure contextRef="c-136" decimals="-5" id="f-516" unitRef="usd">1162000000</us-gaap:AssetsFairValueDisclosure>
    <us-gaap:AssetsFairValueDisclosure contextRef="c-137" decimals="-5" id="f-517" unitRef="usd">16707300000</us-gaap:AssetsFairValueDisclosure>
    <us-gaap:EquitySecuritiesFVNINoncurrent contextRef="c-150" decimals="-5" id="f-518" unitRef="usd">47500000</us-gaap:EquitySecuritiesFVNINoncurrent>
    <us-gaap:EquitySecuritiesFVNINoncurrent contextRef="c-151" decimals="-5" id="f-519" unitRef="usd">33300000</us-gaap:EquitySecuritiesFVNINoncurrent>
    <us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount contextRef="c-4" decimals="-5" id="f-520" unitRef="usd">571600000</us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount>
    <us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount contextRef="c-5" decimals="-5" id="f-521" unitRef="usd">334000000.0</us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount>
    <us-gaap:EquitySecuritiesFvNiCurrentAndNoncurrent contextRef="c-152" decimals="-5" id="f-522" unitRef="usd">169900000</us-gaap:EquitySecuritiesFvNiCurrentAndNoncurrent>
    <us-gaap:EquitySecuritiesFvNiCurrentAndNoncurrent contextRef="c-153" decimals="-5" id="f-523" unitRef="usd">147500000</us-gaap:EquitySecuritiesFvNiCurrentAndNoncurrent>
    <us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss contextRef="c-1" decimals="-5" id="f-524" unitRef="usd">24000000.0</us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss>
    <us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss contextRef="c-16" decimals="-5" id="f-525" unitRef="usd">139700000</us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss>
    <us-gaap:LongTermDebtFairValue contextRef="c-123" decimals="-6" id="f-526" unitRef="usd">1564000000</us-gaap:LongTermDebtFairValue>
    <us-gaap:LongTermDebtFairValue contextRef="c-137" decimals="-6" id="f-527" unitRef="usd">1576000000</us-gaap:LongTermDebtFairValue>
    <us-gaap:LongTermDebtNoncurrent contextRef="c-5" decimals="-6" id="f-528" unitRef="usd">1986000000</us-gaap:LongTermDebtNoncurrent>
    <us-gaap:InventoryDisclosureTextBlock contextRef="c-1" id="f-529">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:120%"&gt;Inventories&lt;/span&gt;&lt;div style="margin-bottom:6pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Inventories consist of the following:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:3pt;margin-top:8pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:60.229%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:42.589%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.013%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:25.841%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.013%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:25.844%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Raw materials&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;630.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;641.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Work-in-process&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,524.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,641.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Finished goods&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;160.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;190.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Deferred costs&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;787.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;727.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,103.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,200.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Deferred costs represent the costs of product manufactured and shipped to the Company's collaborators for which recognition of revenue has been &lt;span id="i862c0d4f0bc245caa828f85f27bf699a_240"&gt;&lt;/span&gt;deferred.&lt;/span&gt;&lt;/div&gt;</us-gaap:InventoryDisclosureTextBlock>
    <us-gaap:ScheduleOfInventoryCurrentTableTextBlock contextRef="c-1" id="f-530">&lt;div style="margin-bottom:6pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Inventories consist of the following:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:3pt;margin-top:8pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:60.229%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:42.589%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.013%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:25.841%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.013%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:25.844%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Raw materials&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;630.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;641.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Work-in-process&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,524.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,641.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Finished goods&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;160.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;190.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Deferred costs&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;787.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;727.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,103.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,200.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfInventoryCurrentTableTextBlock>
    <us-gaap:InventoryRawMaterialsNetOfReserves contextRef="c-4" decimals="-5" id="f-531" unitRef="usd">630700000</us-gaap:InventoryRawMaterialsNetOfReserves>
    <us-gaap:InventoryRawMaterialsNetOfReserves contextRef="c-5" decimals="-5" id="f-532" unitRef="usd">641500000</us-gaap:InventoryRawMaterialsNetOfReserves>
    <us-gaap:InventoryWorkInProcessNetOfReserves contextRef="c-4" decimals="-5" id="f-533" unitRef="usd">1524500000</us-gaap:InventoryWorkInProcessNetOfReserves>
    <us-gaap:InventoryWorkInProcessNetOfReserves contextRef="c-5" decimals="-5" id="f-534" unitRef="usd">1641600000</us-gaap:InventoryWorkInProcessNetOfReserves>
    <us-gaap:InventoryFinishedGoodsNetOfReserves contextRef="c-4" decimals="-5" id="f-535" unitRef="usd">160500000</us-gaap:InventoryFinishedGoodsNetOfReserves>
    <us-gaap:InventoryFinishedGoodsNetOfReserves contextRef="c-5" decimals="-5" id="f-536" unitRef="usd">190200000</us-gaap:InventoryFinishedGoodsNetOfReserves>
    <us-gaap:OtherInventoryNetOfReserves contextRef="c-4" decimals="-5" id="f-537" unitRef="usd">787900000</us-gaap:OtherInventoryNetOfReserves>
    <us-gaap:OtherInventoryNetOfReserves contextRef="c-5" decimals="-5" id="f-538" unitRef="usd">727500000</us-gaap:OtherInventoryNetOfReserves>
    <us-gaap:InventoryNet contextRef="c-4" decimals="-5" id="f-539" unitRef="usd">3103600000</us-gaap:InventoryNet>
    <us-gaap:InventoryNet contextRef="c-5" decimals="-5" id="f-540" unitRef="usd">3200800000</us-gaap:InventoryNet>
    <us-gaap:IncomeTaxDisclosureTextBlock contextRef="c-1" id="f-541">Income Taxes&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company's effective tax rate was 12.5% and 10.6% for the three months ended March&#160;31, 2026 and 2025, respectively. The Company's effective tax rate for the three months ended March&#160;31, 2026 and 2025 was positively impacted, compared to the U.S. federal statutory rate, primarily by income earned in foreign jurisdictions with tax rates lower than the U.S. federal statutory rate and, to a lesser extent, federal tax credits for research activities, partly offset by changes in unrecognized tax benefits.&lt;/span&gt;&lt;/div&gt;</us-gaap:IncomeTaxDisclosureTextBlock>
    <us-gaap:EffectiveIncomeTaxRateContinuingOperations contextRef="c-1" decimals="3" id="f-542" unitRef="number">0.125</us-gaap:EffectiveIncomeTaxRateContinuingOperations>
    <us-gaap:EffectiveIncomeTaxRateContinuingOperations contextRef="c-16" decimals="3" id="f-543" unitRef="number">0.106</us-gaap:EffectiveIncomeTaxRateContinuingOperations>
    <us-gaap:StockholdersEquityNoteDisclosureTextBlock contextRef="c-1" id="f-544">Stockholders' Equity&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;a. Share Repurchase Programs&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company's board of directors has authorized share repurchase programs, including a share repurchase program for up to $3.0&#160;billion of the Company's Common Stock which was authorized in February 2025. The programs have no time limit and can be discontinued at any time.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The table below summarizes the shares of the Company's Common Stock that the Company repurchased under its share repurchase programs and the cost of such shares, which were recorded as Treasury Stock.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;padding-left:38.25pt;padding-right:38.25pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:62.860%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:40.760%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.962%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:26.806%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.962%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:26.810%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Number of shares &lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total cost of shares&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;803.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,052.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;As of March&#160;31, 2026, $688.2 million remained available for share repurchases under the Company's share repurchase programs.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;In April 2026, the Company's board of directors authorized a share repurchase program to repurchase up to an additional $3.0 billion of the Company's Common Stock. The share repurchase program was approved under terms substantially similar to the repurchase programs described above.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;b. Dividends &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;In January 2026, the Company's board of directors declared a quarterly cash dividend of $0.94 per share on its Common Stock and Class A Stock, which was paid to the Company's shareholders in March 2026.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Additionally, in April 2026, the Company's board of directors declared a cash dividend of $0.94 per share on its Common Stock and Class A Stock. The dividend will be payable to the Company's shareholders in June 2026.&lt;/span&gt;&lt;/div&gt;</us-gaap:StockholdersEquityNoteDisclosureTextBlock>
    <srt:StockRepurchaseProgramAuthorizedAmount1 contextRef="c-154" decimals="-8" id="f-545" unitRef="usd">3000000000.0</srt:StockRepurchaseProgramAuthorizedAmount1>
    <us-gaap:ScheduleOfTreasuryStockByClassTextBlock contextRef="c-1" id="f-546">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The table below summarizes the shares of the Company's Common Stock that the Company repurchased under its share repurchase programs and the cost of such shares, which were recorded as Treasury Stock.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;padding-left:38.25pt;padding-right:38.25pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:62.860%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:40.760%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.962%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:26.806%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.962%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:26.810%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Number of shares &lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total cost of shares&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;803.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,052.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfTreasuryStockByClassTextBlock>
    <us-gaap:TreasuryStockSharesAcquired contextRef="c-1" decimals="-5" id="f-547" unitRef="shares">1000000.0</us-gaap:TreasuryStockSharesAcquired>
    <us-gaap:TreasuryStockSharesAcquired contextRef="c-16" decimals="-5" id="f-548" unitRef="shares">1500000</us-gaap:TreasuryStockSharesAcquired>
    <us-gaap:TreasuryStockValueAcquiredCostMethod contextRef="c-1" decimals="-5" id="f-549" unitRef="usd">803200000</us-gaap:TreasuryStockValueAcquiredCostMethod>
    <us-gaap:TreasuryStockValueAcquiredCostMethod contextRef="c-16" decimals="-5" id="f-550" unitRef="usd">1052400000</us-gaap:TreasuryStockValueAcquiredCostMethod>
    <us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 contextRef="c-4" decimals="-5" id="f-551" unitRef="usd">688200000</us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1>
    <srt:StockRepurchaseProgramAuthorizedAmount1 contextRef="c-155" decimals="-8" id="f-552" unitRef="usd">3000000000.0</srt:StockRepurchaseProgramAuthorizedAmount1>
    <us-gaap:CommonStockDividendsPerShareDeclared
      contextRef="c-1"
      decimals="2"
      id="f-553"
      unitRef="usdPerShare">0.94</us-gaap:CommonStockDividendsPerShareDeclared>
    <us-gaap:CommonStockDividendsPerShareDeclared
      contextRef="c-156"
      decimals="2"
      id="f-554"
      unitRef="usdPerShare">0.94</us-gaap:CommonStockDividendsPerShareDeclared>
    <us-gaap:CashFlowSupplementalDisclosuresTextBlock contextRef="c-1" id="f-555">Statement of Cash Flows&lt;div style="margin-bottom:6pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:3pt;margin-top:8pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:90.782%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:61.540%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.605%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.774%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.605%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.776%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Cash and cash equivalents&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2,962.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,090.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Restricted cash included in Other current assets&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;8.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2,970.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,093.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Restricted cash consists of amounts held pursuant to contractual arrangements and for dividends payable on certain equity awards.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;Supplemental disclosure of non-cash investing and financing activities&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.992%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:28.139%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:15.128%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:15.128%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:2.554%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:15.128%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:15.133%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2024&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Accrued capital expenditures&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;162.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;178.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;105.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;151.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Accrued contingent consideration in connection with acquisitions&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;60.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;58.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;43.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;62.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:CashFlowSupplementalDisclosuresTextBlock>
    <us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock contextRef="c-1" id="f-557">&lt;div style="margin-bottom:6pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:3pt;margin-top:8pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:90.782%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:61.540%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.605%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.774%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.605%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.776%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Cash and cash equivalents&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2,962.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,090.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Restricted cash included in Other current assets&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;8.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2,970.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,093.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock>
    <us-gaap:ScheduleOfCashAndCashEquivalentsTableTextBlock contextRef="c-1" id="f-556">&lt;div style="margin-bottom:6pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The following provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:3pt;margin-top:8pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:90.782%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:61.540%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.605%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.774%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.605%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.776%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Cash and cash equivalents&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2,962.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,090.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Restricted cash included in Other current assets&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;8.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2,970.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;3,093.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfCashAndCashEquivalentsTableTextBlock>
    <us-gaap:CashAndCashEquivalentsAtCarryingValue contextRef="c-4" decimals="-5" id="f-558" unitRef="usd">2962600000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
    <us-gaap:CashAndCashEquivalentsAtCarryingValue contextRef="c-54" decimals="-5" id="f-559" unitRef="usd">3090200000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
    <us-gaap:RestrictedCashCurrent contextRef="c-4" decimals="-5" id="f-560" unitRef="usd">8000000.0</us-gaap:RestrictedCashCurrent>
    <us-gaap:RestrictedCashCurrent contextRef="c-54" decimals="-5" id="f-561" unitRef="usd">2800000</us-gaap:RestrictedCashCurrent>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c-4" decimals="-5" id="f-562" unitRef="usd">2970600000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="c-54" decimals="-5" id="f-563" unitRef="usd">3093000000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock contextRef="c-1" id="f-564">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.992%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:28.139%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:15.128%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:15.128%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:2.554%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:15.128%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:15.133%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;December 31,&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2024&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Accrued capital expenditures&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;162.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;178.8&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;105.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;151.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Accrued contingent consideration in connection with acquisitions&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;60.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;58.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;43.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;62.7&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock>
    <us-gaap:CapitalExpendituresIncurredButNotYetPaid contextRef="c-1" decimals="-5" id="f-565" unitRef="usd">162500000</us-gaap:CapitalExpendituresIncurredButNotYetPaid>
    <us-gaap:CapitalExpendituresIncurredButNotYetPaid contextRef="c-157" decimals="-5" id="f-566" unitRef="usd">178800000</us-gaap:CapitalExpendituresIncurredButNotYetPaid>
    <us-gaap:CapitalExpendituresIncurredButNotYetPaid contextRef="c-16" decimals="-5" id="f-567" unitRef="usd">105900000</us-gaap:CapitalExpendituresIncurredButNotYetPaid>
    <us-gaap:CapitalExpendituresIncurredButNotYetPaid contextRef="c-158" decimals="-5" id="f-568" unitRef="usd">151600000</us-gaap:CapitalExpendituresIncurredButNotYetPaid>
    <regn:AcquisitionsContingentConsiderationAccruedButNotYetPaid contextRef="c-1" decimals="-5" id="f-569" unitRef="usd">60700000</regn:AcquisitionsContingentConsiderationAccruedButNotYetPaid>
    <regn:AcquisitionsContingentConsiderationAccruedButNotYetPaid contextRef="c-157" decimals="-5" id="f-570" unitRef="usd">58900000</regn:AcquisitionsContingentConsiderationAccruedButNotYetPaid>
    <regn:AcquisitionsContingentConsiderationAccruedButNotYetPaid contextRef="c-16" decimals="-5" id="f-571" unitRef="usd">43100000</regn:AcquisitionsContingentConsiderationAccruedButNotYetPaid>
    <regn:AcquisitionsContingentConsiderationAccruedButNotYetPaid contextRef="c-158" decimals="-5" id="f-572" unitRef="usd">62700000</regn:AcquisitionsContingentConsiderationAccruedButNotYetPaid>
    <us-gaap:SegmentReportingDisclosureTextBlock contextRef="c-1" id="f-573">Segment Information&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company operates in one business segment, which includes all activities related to the discovery, development, and commercialization of medicines for serious diseases. The determination of a single business segment is consistent with the consolidated financial information regularly provided to the Company's chief operating decision maker ("CODM"). The Company's CODM is its Chief Executive Officer, who reviews and evaluates consolidated net income for purposes of assessing performance, making operating decisions, allocating resources, and planning and forecasting for future periods.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;In addition to the significant expense categories included within consolidated net income presented on the Company's Condensed Consolidated Statements of Operations, see below for disaggregated amounts that comprise research and development expenses:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;padding-left:31.5pt;padding-right:31.5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:72.947%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:52.407%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.802%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:21.144%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.802%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:21.145%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Direct research and development expenses&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;498.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;388.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Indirect research and development expenses:&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Payroll and benefits&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;484.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;451.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:20.25pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Lab supplies and other research and development costs&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;59.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;60.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Occupancy and other operating costs&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;170.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;154.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total indirect research and development expenses&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;714.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;666.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Clinical manufacturing costs&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;364.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;310.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement of research and development expenses by collaborators&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(33.6)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(37.3)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total research and development expenses&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,543.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,327.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:3pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="15" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:100%"&gt; Direct research and development expenses are comprised primarily of costs paid to third parties for clinical and product development activities, and the portion of research and development expenses incurred by our collaborators that we are obligated to reimburse&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:SegmentReportingDisclosureTextBlock>
    <us-gaap:NumberOfReportableSegments
      contextRef="c-1"
      decimals="INF"
      id="f-574"
      unitRef="segment">1</us-gaap:NumberOfReportableSegments>
    <us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock contextRef="c-1" id="f-575">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;In addition to the significant expense categories included within consolidated net income presented on the Company's Condensed Consolidated Statements of Operations, see below for disaggregated amounts that comprise research and development expenses:&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;padding-left:31.5pt;padding-right:31.5pt;text-align:center"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:72.947%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:52.407%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.802%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:21.144%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.802%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:21.145%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Three Months Ended &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;March 31,&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%"&gt;(In millions)&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;2025&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Direct research and development expenses&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;498.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;388.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Indirect research and development expenses:&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Payroll and benefits&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;484.2&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;451.6&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:20.25pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Lab supplies and other research and development costs&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;59.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;60.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Occupancy and other operating costs&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;170.9&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;154.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total indirect research and development expenses&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;714.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;666.0&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Clinical manufacturing costs&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;364.1&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;310.3&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 10pt;text-align:left;text-indent:-9pt;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Reimbursement of research and development expenses by collaborators&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(33.6)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;(37.3)&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:15pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Total research and development expenses&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,543.5&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;$&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,327.4&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:3pt"&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;border-top:3pt double #000000;padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="15" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="padding-left:9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:100%"&gt; Direct research and development expenses are comprised primarily of costs paid to third parties for clinical and product development activities, and the portion of research and development expenses incurred by our collaborators that we are obligated to reimburse&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-159" decimals="-5" id="f-576" unitRef="usd">498600000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-160" decimals="-5" id="f-577" unitRef="usd">388400000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-161" decimals="-5" id="f-578" unitRef="usd">484200000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-162" decimals="-5" id="f-579" unitRef="usd">451600000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-163" decimals="-5" id="f-580" unitRef="usd">59300000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-164" decimals="-5" id="f-581" unitRef="usd">60000000.0</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-165" decimals="-5" id="f-582" unitRef="usd">170900000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-166" decimals="-5" id="f-583" unitRef="usd">154400000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-167" decimals="-5" id="f-584" unitRef="usd">714400000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-168" decimals="-5" id="f-585" unitRef="usd">666000000.0</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-169" decimals="-5" id="f-586" unitRef="usd">364100000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-170" decimals="-5" id="f-587" unitRef="usd">310300000</us-gaap:ResearchAndDevelopmentExpense>
    <regn:ResearchAndDevelopmentExpenseReimbursements contextRef="c-171" decimals="-5" id="f-588" unitRef="usd">-33600000</regn:ResearchAndDevelopmentExpenseReimbursements>
    <regn:ResearchAndDevelopmentExpenseReimbursements contextRef="c-172" decimals="-5" id="f-589" unitRef="usd">-37300000</regn:ResearchAndDevelopmentExpenseReimbursements>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-171" decimals="-5" id="f-590" unitRef="usd">1543500000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="c-172" decimals="-5" id="f-591" unitRef="usd">1327400000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:LegalMattersAndContingenciesTextBlock contextRef="c-1" id="f-592">Legal Matters&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;From time to time, the Company is a party to legal proceedings in the course of the Company's business. The outcome of any such proceedings, regardless of the merits, is inherently uncertain. If the Company is unable to prevail in one or more of such proceedings, its consolidated financial position, results of operations, and future cash flows may be materially adversely impacted. Costs associated with the Company's involvement in legal proceedings are expensed as incurred. The Company recognizes gain contingencies associated with such proceedings when the award or recovery is realized or realizable and loss contingencies when it is probable that a liability will be incurred and the amount of loss can be reasonably estimated. As of March 31, 2026 and December 31, 2025, the Company's accruals for loss contingencies were not material. There are certain loss contingencies that the Company deems reasonably possible for which the possible loss or range of possible loss is not estimable at this time. &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;a. Proceedings Relating to EYLEA (aflibercept) Injection&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;(1) &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline"&gt;United States&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;As described in greater detail below, the Company has filed patent infringement lawsuits against various parties in the United States alleging infringement of certain Company patents pertaining to EYLEA, and certain of these patents have also been subject to post-grant proceedings before the United States Patent and Trademark Office ("USPTO").&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On February 11, 2026, the Company entered into a settlement agreement resulting in the dismissal of the previously disclosed patent infringement lawsuit before the United States District Court for the Northern District of West Virginia against Samsung Bioepis Co., Ltd. ("Samsung Bioepis"). The lawsuit alleged infringement of certain Company patents, including the Company's U.S. Patent No. 11,084,865. Pursuant to the settlement agreement, Samsung Bioepis is precluded from launching its aflibercept 2 mg biosimilar until January 2027. &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On January 10, 2024, the Company filed a patent infringement lawsuit (as amended on January 7, 2026) against Amgen Inc. ("Amgen") in the United States District Court for the Central District of California (subsequently transferred to the United States District Court for the Northern District of West Virginia) alleging that Amgen's filing for U.S. Food and Drug Administration ("FDA") approval of an aflibercept 2 mg biosimilar infringed certain Company patents (as amended, the "2024 lawsuit"). On September 23, 2024, the court denied the Company's motion for a preliminary injunction, which decision was affirmed by the Federal Circuit on March 14, 2025. On June 17, 2025, the Company filed an additional patent infringement lawsuit against Amgen in the United States District Court for the Central District of California alleging that Amgen's continued commercialization of its aflibercept 2 mg biosimilar infringes the Company's U.S. Patent No. 12,331,099 (the "2025 lawsuit"). On September 12, 2025, Amgen filed its answer and counterclaims in the 2025 lawsuit alleging, among other things, that the Company obtained numerous patents fraudulently, rendering them unenforceable, and that obtaining and enforcing certain Company patents violated Section 2 of the Sherman Antitrust Act of 1890, as amended (the "Sherman Antitrust Act"). On November 12, 2025, the Company filed a motion to dismiss certain of Amgen's affirmative defenses and counterclaims in the 2025 lawsuit, and an oral hearing on the motion was held on April 7, 2026. On March 9, 2026, Amgen filed its answer and counterclaims in the 2024 lawsuit; and, on April 20, 2026, the Company filed a motion to dismiss certain of Amgen's affirmative defenses and counterclaims in the 2024 lawsuit.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;(2) &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline"&gt;Outside the United States&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;As described in greater detail below, the Company has filed patent infringement lawsuits against various parties in several jurisdictions outside the United States alleging infringement of certain Company patents pertaining to EYLEA, and certain of these patents have also been subject to post-grant proceedings before the European Patent Office (the "EPO") and/or other comparable foreign authorities. &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;(i) Multijurisdictional Settlement&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-style:italic;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;&#x2013; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;Formycon&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;. On February 23, 2026, the Company and Bayer entered into a settlement agreement with Formycon AG ("Formycon") in respect of Europe and certain markets in Latin America and the Asia-Pacific region. Pursuant to the settlement agreement, all pending judicial and administrative proceedings related to Formycon's aflibercept 2 mg biosimilar product have been dismissed, and Formycon is permitted to launch its product in the United Kingdom and, starting in May 2026, the rest of Europe and the other jurisdictions covered by the settlement.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;(ii) Europe&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;(I) EPO Post-Grant Proceedings&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;Various parties, including Amgen and other, anonymous parties, are seeking revocation of the Company's European Patent Nos. 2,944,306 (the "'306 Patent"), 3,716,992 (the "'992 Patent"), and 3,384,049 (the "'049 Patent") before the Opposition Division ("OD") of the EPO. On November 26, 2024, following an oral hearing, the OD announced its decision to revoke the '306 Patent. An oral hearing concerning the Company's appeal of this decision has been scheduled for October 2026. On October 22, 2025, following an oral hearing, the OD upheld the validity of the '992 Patent's claims in amended form, which decision has been appealed by Amgen. On April 21, 2026, following an oral hearing, the OD invalidated the '049 Patent.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;(II) Country-Specific Proceedings&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company is also party to proceedings against various parties, including Sandoz Inc. ("Sandoz"), Sam Chun Dang Pharm. Co., Ltd ("Sam Chun Dang"), and/or their affiliated entities, before several European national courts. In Germany, in a January 2026 preliminary injunction proceeding, the Munich Regional Court issued a decision that found that Sandoz's aflibercept 2 mg biosimilar product infringes the Company's European Patent No. 2,364,691 (the "'691 Patent") and granted the Company's motion for a preliminary injunction, enjoining Sandoz from selling its aflibercept 2 mg biosimilar in Germany until the expiration of the '691 Patent. Following an appeal by Sandoz, in February 2026 the Munich Higher Regional Court suspended enforcement of, and the Company subsequently withdrew its request for, the preliminary injunction. On March 31, 2026, the Company initiated a patent infringement lawsuit in the Munich Regional Court against Sandoz alleging its aflibercept 2 mg biosimilar infringes the '691 Patent. In addition, on April 1, 2026, the Company initiated a patent infringement lawsuit in the Munich Regional Court against Sam Chun Dang alleging its aflibercept 2 mg biosimilar infringes the '691 Patent.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;(iii) South Korea&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company and Bayer Consumer Care AG have filed patent infringement lawsuits in the Seoul Central District Court against Sam Chun Dang and OPTUS Pharmaceutical Co., Ltd. These lawsuits seek damages and/or injunctive relief and allege that the &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;making, constructing, using, or selling of an aflibercept 2 mg biosimilar by the defendants would infringe one or more claims of the Company's Korean Patent Nos. 1406811, 659477, and 2519234.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"&gt;(iv) Japan&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On October 10, 2025, the Company filed a patent infringement lawsuit in the Osaka District Court against Fuji Pharma Co., Ltd. alleging that the making, constructing, using, or selling of an aflibercept 2 mg biosimilar by the defendant would infringe one or more claims of the Company's Japanese Patent No. 7,733,706. On January 28, 2026, the parties entered into a settlement agreement, pursuant to which this lawsuit has been dismissed.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;b. Proceedings Relating to EYLEA (aflibercept) Injection Pre-filled Syringe&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On July 17, 2020, the Company filed an antitrust lawsuit (as amended on January 25, 2021) against Novartis Pharma AG, Novartis Pharmaceuticals Corporation, and Novartis Technology LLC (collectively, "Novartis") and Vetter Pharma International GmbH in the United States District Court for the Southern District of New York (the "SDNY") seeking a judgment that the defendants' conduct relating to Novartis's attempt to assert its U.S. Patent No. 9,220,631 against Regeneron in 2020 violated Sections 1 and 2 of the Sherman Antitrust Act, and constituted tortious interference with contract. The Company is also seeking injunctive relief and treble damages. On September 21, 2021, this lawsuit was transferred to the Northern District of New York. On June 10, 2022, the Company filed an appeal of the District Court's decision to dismiss the amended complaint with the U.S. Court of Appeals for the Second Circuit (the "Second Circuit"). On March 18, 2024, the Second Circuit reversed the District Court's decision to dismiss the amended complaint and remanded the lawsuit to the District Court for further proceedings consistent with the Second Circuit's opinion. On November 19, 2024, the Company moved to transfer the lawsuit back to the SDNY, which motion was granted on December 5, 2024.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;c. Proceedings Relating to Praluent (alirocumab) Injection&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On May 27, 2022, the Company filed a lawsuit against Amgen in the United States District Court for the District of Delaware, alleging that, beginning in 2020, Amgen engaged in an anticompetitive bundling scheme which was designed to exclude Praluent from the market in violation of federal and state laws. The lawsuit seeks damages for harm caused by the alleged scheme, as well as injunctive relief restraining Amgen from continuing its alleged anticompetitive conduct. A trial was held in May 2025. On May 15, 2025, the jury reached a verdict in Regeneron's favor on nine of the ten counts submitted to it and awarded Regeneron $135.6 million in compensatory damages and $271.2&#160;million in punitive damages. On June 20, 2025, Amgen filed a post-trial motion for judgment as a matter of law or, in the alternative, for a new trial. Also on June 20, 2025, the Company filed a post-trial motion for (i) permanent injunctive relief, (ii) a constructive trust, and (iii) prejudgment interest. An oral hearing on Amgen's and Regeneron's respective post-trial motions was held on August 27, 2025.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;d. Department of Justice Matters&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On June 24, 2020, the U.S. Attorney's Office for the District of Massachusetts filed a civil complaint in the U.S. District Court for the District of Massachusetts alleging violations of the federal Anti-Kickback Statute and asserting causes of action under the federal False Claims Act and state law (the "June 2020 Civil Complaint") relating to the Company's support of 501(c)(3) organizations that provide financial assistance to patients. On September 27, 2023, the court (i) denied in part and granted in part the Company's motion for summary judgment and (ii) denied in its entirety the motion for partial summary judgment filed by the U.S. Attorney's Office for the District of Massachusetts. On October 25, 2023, the court certified for interlocutory appeal a portion of the court's September 27, 2023 order that addressed the causation standard applicable to the alleged violations of the federal Anti-Kickback Statute and federal False Claims Act. On February 18, 2025, the U.S. Court of Appeals for the First Circuit affirmed the portion of the court's September 27, 2023 order that had been certified for interlocutory appeal. On October 1, 2025, the U.S. Attorney's Office for the District of Massachusetts filed a second motion for partial summary judgment.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On June 3, 2021, the United States District Court for the Central District of California unsealed a qui tam complaint (as amended on October 29, 2021) filed against the Company, Regeneron Healthcare Solutions, Inc., and Sanofi-Aventis U.S. LLC by two qui tam plaintiffs (known as relators) purportedly on behalf of the United States and various states (the "State Plaintiffs"). The amended complaint alleges violations of the federal Anti-Kickback Statute and asserts causes of action under the federal False Claims Act and state law relating to allegedly unlawful remuneration and assistance provided to prescribers. Also on June 3, 2021, the United States and the State Plaintiffs notified the court of their decision to decline to intervene in the case. On January 14, 2022, the Company filed a motion to dismiss the amended complaint in its entirety. On July 25, 2023, the court granted in part and denied in part the Company's motion to dismiss. On September 1, 2023, the Company filed a second motion to dismiss the amended complaint or, in the alternative, a motion for judgment on the pleadings. On July 31, 2024 and August 15, 2024, respectively, the District Court granted the Company's second motion to dismiss the amended complaint with respect to the remaining causes of action under federal law and declined to exercise supplemental jurisdiction over the &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;remaining causes of action under state law. On August 26, 2024, the qui tam plaintiffs filed a notice of appeal. Oral argument on the appeal was held on November 18, 2025.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;In June 2021, the Company received a civil investigative demand ("CID") from the U.S. Department of Justice pursuant to the federal False Claims Act relating to, among other things, alleged inflated reimbursement rates for EYLEA by excluding applicable discounts, rebates, and benefits from the average sales price reported to the Centers for Medicare &amp;amp; Medicaid Services. On March 28, 2024, the U.S. District Court for the District of Massachusetts unsealed a qui tam complaint against the Company and others by two qui tam plaintiffs, purportedly on behalf of the United States and various states and municipalities, asserting causes of action under the federal False Claims Act and state and local laws, and alleging violations of the federal Anti-Kickback statute related to, among other things, the alleged conduct described above. Also on March 28, 2024, the U.S. Department of Justice and the U.S. Attorney's Office for the District of Massachusetts filed a civil complaint in partial intervention (the "March 2024 Civil Complaint") of the qui tam action, in the same court, asserting causes of action under the federal False Claims Act and a claim for unjust enrichment related to the alleged conduct described above. On June 25, 2024, the States of Colorado, Georgia, Michigan, North Carolina, Texas, and Washington filed a civil complaint in partial intervention (the "June 2024 Civil Complaint") in the same court asserting causes of action under various state laws related to the same alleged conduct. On April 29, 2025, the court denied the Company's motion to dismiss the March 2024 Civil Complaint and the June 2024 Civil Complaint. On June 18, 2025, the States of Maine, Nebraska, Ohio, Oregon, and Wyoming intervened in the action and filed a consolidated complaint asserting causes of action under their respective state laws. &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;e. Proceedings Initiated by Other Payors&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;The Company is party to several lawsuits relating to the conduct alleged in the June 2020 Civil Complaint discussed under "d. Department of Justice Matters" above. These lawsuits were filed by UnitedHealthcare Insurance Company and United Healthcare Services, Inc. (collectively, "UHC") and Humana Inc. ("Humana") in the SDNY on December 17, 2020 and July 22, 2021, respectively; and by Blue Cross and Blue Shield of Massachusetts, Inc. and Blue Cross and Blue Shield of Massachusetts HMO Blue, Inc. (collectively, "BCBS"), Medical Mutual of Ohio ("MMO"), Horizon Healthcare Services, Inc. d/b/a Horizon Blue Cross Blue Shield of New Jersey ("Horizon"), and Local 464A United Food and Commercial Workers Union Welfare Service Benefit Fund ("Local 464A") in the U.S. District Court for the District of Massachusetts on December 20, 2021, February 23, 2022, April 4, 2022, and June 17, 2022, respectively. These lawsuits allege causes of action under state law and the federal Racketeer Influenced and Corrupt Organizations Act ("RICO") and seek monetary damages and equitable relief. The MMO and Local 464A lawsuits are putative class action lawsuits. On December 29, 2021, the lawsuits filed by UHC and Humana were stayed by the SDNY pending resolution of the proceedings before the U.S. District Court for the District of Massachusetts concerning the allegations in the June 2020 Civil Complaint. On September 27, 2022, the lawsuits filed by BCBS, MMO, and Horizon were stayed by the U.S. District Court for the District of Massachusetts pending resolution of the proceedings before the same court concerning the allegations in the June 2020 Civil Complaint; and, in light of these stays, the parties to the Local 464A action have also agreed to stay that matter.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On June 24, 2024, a group of plaintiffs purporting to be assignees of claims by various Medicare Advantage plans and related entities filed a putative class action complaint in the U.S. District Court for the District of Columbia on behalf of Medicare Advantage plans and other payors. The lawsuit relates to the conduct alleged in the June 2020 Civil Complaint, March 2024 Civil Complaint, and June 2024 Civil Complaint discussed under "d. Department of Justice Matters" above. The lawsuit alleges causes of action under state law and RICO and seeks monetary damages and equitable relief. On October 22, 2024, the Company filed a motion to transfer the proceedings to the U.S. District Court for the District of Massachusetts or, in the alternative, to stay the proceedings or dismiss the proceedings. On January 28, 2025, pursuant to a stipulation among the parties, the proceedings were transferred to the U.S. District Court for the District of Massachusetts. On February 1, 2025, the parties jointly filed a stipulation to stay the action pending resolution of the proceedings before the same court concerning the allegations in the June 2020 Civil Complaint.&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:115%"&gt;f. Shareholder Derivative Complaint&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-style:italic;font-weight:700;line-height:115%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:115%"&gt;&#x2013; Department of Justice June 2020 Civil Complaint Matters&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On June 29, 2021, an alleged shareholder filed a shareholder derivative complaint in the Supreme Court of the State of New York (the "NY Supreme Court"), naming the then-current and certain former members of the Company's board of directors and certain then-current and former executive officers of the Company as defendants and Regeneron as a nominal defendant. The complaint asserts that the individual defendants breached their fiduciary duties in relation to the allegations in the June 2020 Civil Complaint discussed under "d. Department of Justice Matters" above. The complaint seeks an award of damages allegedly sustained by the Company; an order requiring Regeneron to take all necessary actions to reform and improve its corporate governance and internal procedures; disgorgement from the individual defendants of all profits and benefits obtained by them resulting from their sales of Regeneron stock; and costs and disbursements of the action, including attorneys' fees. On July 28, 2021, the defendants filed a notice of removal, removing the case from the NY Supreme Court to the SDNY. On September 23, 2021, the plaintiff moved to remand the case to the NY Supreme Court. Also on September 23, 2021, the individual defendants moved to dismiss the complaint in its entirety. On December 19, 2022, the SDNY denied the plaintiff's motion to remand the case and granted a motion to stay the case pending resolution of the proceedings before the U.S. District Court for the District of Massachusetts concerning the allegations in the June 2020 Civil Complaint. As a result of the stay, the court also terminated the Company's motion to dismiss the complaint without prejudice. The Company can therefore renew the motion to dismiss upon conclusion of the stay. &lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;g. Shareholder Derivative Complaints&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-style:italic;font-weight:700;line-height:120%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;&#x2013; Department of Justice March 2024 Civil Complaint Matters&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;In 2025, various purported shareholders of the Company filed several shareholder derivative complaints in the SDNY or the NY Supreme Court against members of the Company's board of directors and certain current and former executive officers of the Company as defendants and Regeneron as a nominal defendant. The complaints allege that the individual defendants, among other things, breached their fiduciary duties to the Company by failing to properly manage and oversee the Company in connection with the conduct alleged in the March 2024 Civil Complaint discussed under "d. Department of Justice Matters" above, and one lawsuit also alleges a breach of fiduciary duty relating to the conduct alleged in the second amended putative class action civil complaint discussed under "i. Class Action Civil Complaint" below. The complaints also allege that the individual defendants breached the federal securities laws, wasted corporate assets, and unjustly enriched themselves at the expense of the Company. The complaints seek, among other things, an award of damages allegedly sustained by the Company as a result of the alleged misconduct of the individual defendants; an order requiring the individual defendants to take all necessary actions to reform and improve the Company's corporate governance and internal procedures; and costs and disbursements of the applicable action, including attorneys' fees. The cases filed in the SDNY were consolidated and stayed pending resolution of the motion to dismiss filed in the putative class action discussed under "i. Class Action Civil Complaint" below. The shareholder derivative complaints filed in the NY Supreme Court were removed to the SDNY, and the purported shareholders filed motions to remand. On March 16, 2026, the SDNY denied the motions to remand and consolidated the cases with the other shareholder derivative lawsuits pending in the SDNY (which, as noted above, are subject to a stay).&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:112%"&gt;h. Shareholder Derivative Complaint&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:12pt;font-style:italic;font-weight:700;line-height:112%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:112%"&gt;&#x2013; Director Compensation&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On July 22, 2025, an alleged shareholder filed a shareholder derivative complaint in the NY Supreme Court, naming the current non-employee members of our board of directors, and the co-Chairs of our board of directors (who also serve as our President and Chief Executive Officer and our President and Chief Scientific Officer, respectively) as defendants and Regeneron as a nominal defendant. The complaint asserts that the individual defendants breached their fiduciary duties and/or were unjustly enriched when they approved and/or received allegedly excessive non-employee director compensation in 2024 and 2025, and that this allegedly excessive compensation was a waste of corporate assets. The complaint seeks damages in favor of Regeneron for the alleged breaches of fiduciary duties, unjust enrichment, and waste of corporate assets; improvements to Regeneron's corporate governance and internal procedures; equitable relief, including restitution from the individual defendants; and award of the costs of the action, including attorneys' fees. An oral hearing on the Company's motion to dismiss the complaint was held on April 17, 2026.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;i. Class Action Civil Complaint&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On January 7, 2025 (as amended on September 8, 2025 and October 30, 2025), a purported shareholder filed a putative class action civil complaint, on behalf of himself and all others similarly situated, in the SDNY against the Company and certain current and former executive officers of the Company. The second amended complaint asserts violations of federal securities laws in connection with statements or disclosures purportedly related to the conduct alleged in the March 2024 Civil Complaint discussed under "d. Department of Justice Matters" above as well as allegations relating to the launch of EYLEA HD. On July 10, 2025, the court appointed a lead plaintiff and lead counsel for the action. On November 17, 2025, the Company filed a motion to dismiss the second amended complaint. &lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%"&gt;j. Sanofi Litigation&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;On November 18, 2024, the Company filed a lawsuit (as amended on December 20, 2024) in the SDNY against Sanofi and certain of its affiliated entities (collectively, "Sanofi"). The lawsuit alleges that the defendants breached certain provisions of the parties' Amended and Restated License and Collaboration Agreement, dated as of November 10, 2009 (as amended, the "Collaboration Agreement"), concerning Sanofi's obligation to provide Regeneron with full access to material information relating to the commercialization of Dupixent or other products commercialized pursuant to the Collaboration Agreement and Regeneron's audit rights under the Collaboration Agreement. The lawsuit seeks a declaratory judgment, injunctive relief, damages, and other relief. On March 17, 2026, the court denied Sanofi's motion to dismiss the complaint.&lt;/span&gt;&lt;/div&gt;</us-gaap:LegalMattersAndContingenciesTextBlock>
    <us-gaap:LegalCostsPolicyTextBlock contextRef="c-1" id="f-593">Costs associated with the Company's involvement in legal proceedings are expensed as incurred.</us-gaap:LegalCostsPolicyTextBlock>
    <us-gaap:CommitmentsAndContingenciesPolicyTextBlock contextRef="c-1" id="f-594">The Company recognizes gain contingencies associated with such proceedings when the award or recovery is realized or realizable and loss contingencies when it is probable that a liability will be incurred and the amount of loss can be reasonably estimated. As of March 31, 2026 and December 31, 2025, the Company's accruals for loss contingencies were not material.</us-gaap:CommitmentsAndContingenciesPolicyTextBlock>
    <regn:NumberOfCountsRuledInFavorOfPlaintiff
      contextRef="c-173"
      decimals="INF"
      id="f-595"
      unitRef="count">9</regn:NumberOfCountsRuledInFavorOfPlaintiff>
    <regn:NumberOfCountsSubmitted
      contextRef="c-173"
      decimals="INF"
      id="f-596"
      unitRef="count">10</regn:NumberOfCountsSubmitted>
    <us-gaap:LitigationSettlementGain contextRef="c-174" decimals="-5" id="f-597" unitRef="usd">135600000</us-gaap:LitigationSettlementGain>
    <us-gaap:LitigationSettlementGain contextRef="c-175" decimals="-5" id="f-598" unitRef="usd">271200000</us-gaap:LitigationSettlementGain>
    <ecd:MtrlTermsOfTrdArrTextBlock contextRef="c-1" id="f-599">&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:120%"&gt;As disclosed in the table below, during the three months ended March&#160;31, 2026, certain of our directors and/or executive officers adopted plans for trading arrangements intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"&gt;&lt;table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.992%"&gt;&lt;tr&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:20.829%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:30.332%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:10.157%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:13.373%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:0.530%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;td style="width:1.0%"&gt;&lt;/td&gt;&lt;td style="width:16.889%"&gt;&lt;/td&gt;&lt;td style="width:0.1%"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Name&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Position&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Date of Plan Adoption&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Scheduled End Date of Trading Arrangement&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:700;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="text-align:center"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:700;line-height:100%"&gt;Total Number of Securities to Be Sold Under the Plan&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Michael S. Brown, M.D.&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Director&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2/25/2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;12/30/2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,929&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Joseph L. Goldstein, M.D.&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Director&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2/5/2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;11/30/2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,929&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Kathryn Guarini, Ph.D.&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Director&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2/13/2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2/5/2027&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#cceeff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;1,600&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Marion McCourt&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"&gt;&lt;div style="padding-left:9pt;text-indent:-9pt"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;Executive Vice President, Commercial&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;2/17/2026&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;5/5/2027&lt;/span&gt;&lt;/td&gt;&lt;td colspan="3" style="background-color:#ffffff;padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;6,989&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="height:5pt"&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;td colspan="3" style="padding:0 1pt"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr&gt;&lt;td colspan="27" style="padding:2px 1pt;text-align:left;vertical-align:bottom"&gt;&lt;div style="margin-bottom:2pt;padding-left:9pt;text-align:justify"&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:6.5pt;font-weight:400;line-height:100%;position:relative;top:-3.5pt;vertical-align:baseline"&gt;(a)&lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt; &lt;/span&gt;&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:100%"&gt;The trading arrangement may expire on an earlier date if and when all transactions under the arrangement are completed&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</ecd:MtrlTermsOfTrdArrTextBlock>
    <ecd:TrdArrIndName contextRef="c-176" id="f-600">Michael S. Brown, M.D.</ecd:TrdArrIndName>
    <ecd:TrdArrIndTitle contextRef="c-176" id="f-601">Director</ecd:TrdArrIndTitle>
    <ecd:Rule10b51ArrAdoptedFlag contextRef="c-176" id="f-602">true</ecd:Rule10b51ArrAdoptedFlag>
    <ecd:TrdArrAdoptionDate contextRef="c-176" id="f-603">2/25/2026</ecd:TrdArrAdoptionDate>
    <ecd:TrdArrExpirationDate contextRef="c-176" id="f-604">12/30/2026</ecd:TrdArrExpirationDate>
    <ecd:TrdArrSecuritiesAggAvailAmt
      contextRef="c-177"
      decimals="INF"
      id="f-605"
      unitRef="shares">1929</ecd:TrdArrSecuritiesAggAvailAmt>
    <ecd:TrdArrIndName contextRef="c-178" id="f-606">Joseph L. Goldstein, M.D.</ecd:TrdArrIndName>
    <ecd:TrdArrIndTitle contextRef="c-178" id="f-607">Director</ecd:TrdArrIndTitle>
    <ecd:Rule10b51ArrAdoptedFlag contextRef="c-178" id="f-608">true</ecd:Rule10b51ArrAdoptedFlag>
    <ecd:TrdArrAdoptionDate contextRef="c-178" id="f-609">2/5/2026</ecd:TrdArrAdoptionDate>
    <ecd:TrdArrExpirationDate contextRef="c-178" id="f-610">11/30/2026</ecd:TrdArrExpirationDate>
    <ecd:TrdArrSecuritiesAggAvailAmt
      contextRef="c-179"
      decimals="INF"
      id="f-611"
      unitRef="shares">1929</ecd:TrdArrSecuritiesAggAvailAmt>
    <ecd:TrdArrIndName contextRef="c-180" id="f-612">Kathryn Guarini, Ph.D.</ecd:TrdArrIndName>
    <ecd:TrdArrIndTitle contextRef="c-180" id="f-613">Director</ecd:TrdArrIndTitle>
    <ecd:Rule10b51ArrAdoptedFlag contextRef="c-180" id="f-614">true</ecd:Rule10b51ArrAdoptedFlag>
    <ecd:TrdArrAdoptionDate contextRef="c-180" id="f-615">2/13/2026</ecd:TrdArrAdoptionDate>
    <ecd:TrdArrExpirationDate contextRef="c-180" id="f-616">2/5/2027</ecd:TrdArrExpirationDate>
    <ecd:TrdArrSecuritiesAggAvailAmt
      contextRef="c-181"
      decimals="INF"
      id="f-617"
      unitRef="shares">1600</ecd:TrdArrSecuritiesAggAvailAmt>
    <ecd:TrdArrIndName contextRef="c-182" id="f-618">Marion McCourt</ecd:TrdArrIndName>
    <ecd:TrdArrIndTitle contextRef="c-182" id="f-619">Executive Vice President, Commercial</ecd:TrdArrIndTitle>
    <ecd:Rule10b51ArrAdoptedFlag contextRef="c-182" id="f-620">true</ecd:Rule10b51ArrAdoptedFlag>
    <ecd:TrdArrAdoptionDate contextRef="c-182" id="f-621">2/17/2026</ecd:TrdArrAdoptionDate>
    <ecd:TrdArrExpirationDate contextRef="c-182" id="f-622">5/5/2027</ecd:TrdArrExpirationDate>
    <ecd:TrdArrSecuritiesAggAvailAmt
      contextRef="c-183"
      decimals="INF"
      id="f-623"
      unitRef="shares">6989</ecd:TrdArrSecuritiesAggAvailAmt>
</xbrl>
