<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  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:usb="http://dfinsolutions.com/20261023"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="usb-20261023.xsd" xlink:type="simple"/>
    <context id="duration_2026-10-23_to_2026-10-23">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <context id="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <context id="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting1100thInterestInAShareOfSeriesANonCumulativePerpetualPreferredStockParValue1.00Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">usb:DepositarySharesEachRepresenting1100thInterestInAShareOfSeriesANonCumulativePerpetualPreferredStockParValue1.00Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <context id="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesBNonCumulativePerpetualPreferredStockParValue1.00Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">usb:DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesBNonCumulativePerpetualPreferredStockParValue1.00Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <context id="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesKNonCumulativePerpetualPreferredStockParValue1.00Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">usb:DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesKNonCumulativePerpetualPreferredStockParValue1.00Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <context id="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesLNonCumulativePerpetualPreferredStockParValue1.00Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">usb:DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesLNonCumulativePerpetualPreferredStockParValue1.00Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <context id="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesMNonCumulativePerpetualPreferredStockParValue1.00Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">usb:DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesMNonCumulativePerpetualPreferredStockParValue1.00Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <context id="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesONonCumulativePerpetualPreferredStockParValue1.00Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">usb:DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesONonCumulativePerpetualPreferredStockParValue1.00Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <context id="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-FloatingRateNotesSeriesCcSeniorDueMay212028Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">usb:FloatingRateNotesSeriesCcSeniorDueMay212028Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <context id="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-M4.009PercentFixedToFloatingRateNotesSeriesCcSeniorDueMay212032Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000036104</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">usb:M4.009PercentFixedToFloatingRateNotesSeriesCcSeniorDueMay212032Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-10-23</startDate>
            <endDate>2026-10-23</endDate>
        </period>
    </context>
    <dei:EntityRegistrantName
      contextRef="duration_2026-10-23_to_2026-10-23"
      id="Hidden_dei_EntityRegistrantName">US BANCORP \DE\</dei:EntityRegistrantName>
    <dei:AmendmentFlag
      contextRef="duration_2026-10-23_to_2026-10-23"
      id="Hidden_dei_AmendmentFlag">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="duration_2026-10-23_to_2026-10-23"
      id="Hidden_dei_EntityCentralIndexKey">0000036104</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_1">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_0">2026-10-23</dei:DocumentPeriodEndDate>
    <dei:EntityIncorporationStateCountryCode contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_40">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_44">1-6880</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_42">41-0255900</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_48">800 Nicollet Mall</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_41">Minneapolis</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_43">MN</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_45">55402</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_47">651</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_46">466-3000</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_4">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_6">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_8">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_10">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember"
      id="Fact_13">Common Stock, $.01 par value per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember"
      id="Fact_14">USB</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember"
      id="Fact_15">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting1100thInterestInAShareOfSeriesANonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_16">Depositary Shares (each representing 1/100th interest in a share of Series A Non-Cumulative Perpetual Preferred Stock, par value $1.00)</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting1100thInterestInAShareOfSeriesANonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_17">USB PrA</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting1100thInterestInAShareOfSeriesANonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_18">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesBNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_19">Depositary Shares (each representing 1/1,000th interest in a share of Series B Non-Cumulative Perpetual Preferred Stock, par value $1.00)</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesBNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_20">USB PrH</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesBNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_21">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesKNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_22">Depositary Shares (each representing 1/1,000th interest in a share of Series K Non-Cumulative Perpetual Preferred Stock, par value $1.00)</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesKNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_23">USB PrP</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesKNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_24">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesLNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_25">Depositary Shares (each representing 1/1,000th interest in a share of Series L Non-Cumulative Perpetual Preferred Stock, par value $1.00)</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesLNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_26">USB PrQ</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesLNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_27">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesMNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_28">Depositary Shares (each representing 1/1,000th interest in a share of Series M Non-Cumulative Perpetual Preferred Stock, par value $1.00)</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesMNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_29">USB PrR</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesMNonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_30">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesONonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_31">Depositary Shares (each representing 1/1,000th interest in a share of Series O Non-Cumulative Perpetual Preferred Stock, par value $1.00)</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesONonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_32">USB PrS</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-DepositarySharesEachRepresenting11000thInterestInAShareOfSeriesONonCumulativePerpetualPreferredStockParValue1.00Member"
      id="Fact_33">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-FloatingRateNotesSeriesCcSeniorDueMay212028Member"
      id="Fact_34">Floating Rate Notes, Series CC (Senior), due May&#160;21, 2028</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-FloatingRateNotesSeriesCcSeniorDueMay212028Member"
      id="Fact_35">USB/28</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-FloatingRateNotesSeriesCcSeniorDueMay212028Member"
      id="Fact_36">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-M4.009PercentFixedToFloatingRateNotesSeriesCcSeniorDueMay212032Member"
      id="Fact_37">4.009% Fixed-to-Floating Rate Notes, Series CC (Senior), due May&#160;21, 2032</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-M4.009PercentFixedToFloatingRateNotesSeriesCcSeniorDueMay212032Member"
      id="Fact_38">USB/32</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-10-23_to_2026-10-23_us-gaap-StatementClassOfStockAxis_usb-M4.009PercentFixedToFloatingRateNotesSeriesCcSeniorDueMay212032Member"
      id="Fact_39">NYSE</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany contextRef="duration_2026-10-23_to_2026-10-23" id="Fact_12">false</dei:EntityEmergingGrowthCompany>
</xbrl>
