<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:bdx="http://bd.com/20260520"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  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="bdx-20260520.xsd" xlink:type="simple"/>
    <context id="c20260520to20260520">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000010795</identifier>
        </entity>
        <period>
            <startDate>2026-05-20</startDate>
            <endDate>2026-05-20</endDate>
        </period>
    </context>
    <context id="c20260520to20260520_StatementClassOfStockAxis_One900NotesDueDecember152026Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000010795</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">bdx:One900NotesDueDecember152026Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-20</startDate>
            <endDate>2026-05-20</endDate>
        </period>
    </context>
    <context id="c20260520to20260520_StatementClassOfStockAxis_Three855NotesDueMay202033Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000010795</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">bdx:Three855NotesDueMay202033Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-20</startDate>
            <endDate>2026-05-20</endDate>
        </period>
    </context>
    <context id="c20260520to20260520_StatementClassOfStockAxis_One208NotesDueJune42026Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000010795</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">bdx:One208NotesDueJune42026Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-20</startDate>
            <endDate>2026-05-20</endDate>
        </period>
    </context>
    <context id="c20260520to20260520_StatementClassOfStockAxis_CommonStockMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000010795</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-20</startDate>
            <endDate>2026-05-20</endDate>
        </period>
    </context>
    <context id="c20260520to20260520_StatementClassOfStockAxis_One213NotesDueFebruary122036Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000010795</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">bdx:One213NotesDueFebruary122036Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-20</startDate>
            <endDate>2026-05-20</endDate>
        </period>
    </context>
    <dei:AmendmentFlag
      contextRef="c20260520to20260520"
      id="Fact_680394fb6cea4b20bf8cf5e019ca51c8">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="c20260520to20260520"
      id="Fact_5ea72d3005c94686acbd6505b97baf15">0000010795</dei:EntityCentralIndexKey>
    <dei:DocumentType
      contextRef="c20260520to20260520"
      id="Fact_13ae0f7739b14c9798bb1660de5bfc46">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="c20260520to20260520"
      id="Fact_76587da4699b44f6a04cff4a11174b52">2026-05-20</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="c20260520to20260520"
      id="Fact_0c2b4648871346699dbce5020d4acf1b">BECTON, DICKINSON AND COMPANY</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="c20260520to20260520"
      id="Fact_abd5a7450bb541aa9ee423e84d64ed1c">NJ</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="c20260520to20260520"
      id="Fact_edb8fe5ce54841c6a44426593f6e168b">001-4802</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="c20260520to20260520"
      id="Fact_c84f8582789d47479f039d5f6263a4f1">22-0760120</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="c20260520to20260520"
      id="Fact_8bb805a593ba4c48b63d4f993c0dfdfb">1 Becton Drive</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="c20260520to20260520"
      id="Fact_63993eee00b64aaeb4db4ab0f98d2658">Franklin Lakes</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="c20260520to20260520"
      id="Fact_1d87671609dd4dccadaa73d2881a8b40">NJ</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="c20260520to20260520"
      id="Fact_6dc0ccae0b5f4fdb85b4f749be11f2ae">07417-1880</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="c20260520to20260520"
      id="Fact_b5f81f9b35b24d1a8998fbf260c72560">201</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="c20260520to20260520"
      id="Fact_4327d3e6b1bb41ecb95cc8c26a1602ea">847-6800</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="c20260520to20260520"
      id="Fact_1e2d1a2d0939406294221b1e1957712c">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="c20260520to20260520"
      id="Fact_16f3e858df0f4e7a9d860d5f51a043f1">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="c20260520to20260520"
      id="Fact_f0a17a98ccb44f95a4815f13b3060e33">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="c20260520to20260520"
      id="Fact_ba259c7d88ed40f88cea2dbe356fd75c">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="c20260520to20260520_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_0d58f7a431d6457cb833e18cc1ccd118">Common stock, par value $1.00</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20260520to20260520_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_5708bde67f36452cac27ae7e6516ddbd">BDX</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20260520to20260520_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_f730f35154404255b4136abdde157b2a">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20260520to20260520_StatementClassOfStockAxis_One900NotesDueDecember152026Member"
      id="Fact_4c4a2f2c3be042319a3714d54d7d2849">1.900% Notes due December 15, 2026</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20260520to20260520_StatementClassOfStockAxis_One900NotesDueDecember152026Member"
      id="Fact_ab6f785e5f15424ca3a4b10a2f710409">BDX26</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20260520to20260520_StatementClassOfStockAxis_One900NotesDueDecember152026Member"
      id="Fact_2aa035a57dff4daebee94ca03e0511bf">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20260520to20260520_StatementClassOfStockAxis_One208NotesDueJune42026Member"
      id="Fact_e2f47c9c220e4a0ebc31b9c299fbbc12">1.208% Notes due June 4, 2026</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20260520to20260520_StatementClassOfStockAxis_One208NotesDueJune42026Member"
      id="Fact_e1e6d0c527fd43d09fdee6f19243511a">BDX/26A</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20260520to20260520_StatementClassOfStockAxis_One208NotesDueJune42026Member"
      id="Fact_4e2b43de6a8b438c9a426c7ae1aec2ac">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20260520to20260520_StatementClassOfStockAxis_One213NotesDueFebruary122036Member"
      id="Fact_12b839b30aad422496978571417aacf4">1.213% Notes due February 12, 2036</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20260520to20260520_StatementClassOfStockAxis_One213NotesDueFebruary122036Member"
      id="Fact_069e39ef9a0542fbb483af356918cba7">BDX/36</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20260520to20260520_StatementClassOfStockAxis_One213NotesDueFebruary122036Member"
      id="Fact_0240b7cf976943a8820f241537a3c265">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20260520to20260520_StatementClassOfStockAxis_Three855NotesDueMay202033Member"
      id="Fact_1612502f13a44c018fe6676378fb6f23">3.855% Notes due May 20, 2033</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20260520to20260520_StatementClassOfStockAxis_Three855NotesDueMay202033Member"
      id="Fact_e3802b70686841b796c3d2ee59f521d3">BDX/33A</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20260520to20260520_StatementClassOfStockAxis_Three855NotesDueMay202033Member"
      id="Fact_45176367d7a84e0ba3522e2a05dbff45">NYSE</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="c20260520to20260520"
      id="Fact_fc83a0f955af478699f9d7c872d90306">false</dei:EntityEmergingGrowthCompany>
</xbrl>
