<?xml version="1.0" encoding="utf-8"?>
<xbrl
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  xmlns:bmy="http://bms.com/20240213"
  xmlns:dei="http://xbrl.sec.gov/dei/2023"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
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  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
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        <entity>
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        <period>
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            <endDate>2024-02-13</endDate>
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    <context id="c20240213to20240213_StatementClassOfStockAxis_One750NotesDue2035Member">
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            <startDate>2024-02-13</startDate>
            <endDate>2024-02-13</endDate>
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    <context id="c20240213to20240213_StatementClassOfStockAxis_One000NotesDue2025Member">
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        <period>
            <startDate>2024-02-13</startDate>
            <endDate>2024-02-13</endDate>
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    <context id="c20240213to20240213_StatementClassOfStockAxis_CelgeneContingentValueRightsMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000014272</identifier>
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        <period>
            <startDate>2024-02-13</startDate>
            <endDate>2024-02-13</endDate>
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        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000014272</identifier>
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        <period>
            <startDate>2024-02-13</startDate>
            <endDate>2024-02-13</endDate>
        </period>
    </context>
    <dei:AmendmentFlag
      contextRef="c20240213to20240213"
      id="Fact_4fc072e2bb254e25bdea2482a4f56267">false</dei:AmendmentFlag>
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      contextRef="c20240213to20240213"
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    <dei:DocumentType
      contextRef="c20240213to20240213"
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      contextRef="c20240213to20240213"
      id="Fact_11072c9bd983457d863908d0ce258b9d">2024-02-13</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="c20240213to20240213"
      id="Fact_8ef85a9587fd41128dba33004bfd2439">BRISTOL-MYERS SQUIBB COMPANY</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="c20240213to20240213"
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    <dei:EntityFileNumber
      contextRef="c20240213to20240213"
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    <dei:EntityTaxIdentificationNumber
      contextRef="c20240213to20240213"
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    <dei:EntityAddressAddressLine1
      contextRef="c20240213to20240213"
      id="Fact_2cf19334ab8542568ae69bd3e5902be7">Route 206 &amp; Province Line Road</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="c20240213to20240213"
      id="Fact_b2451b304e4847edacc726030577b8a7">Princeton</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="c20240213to20240213"
      id="Fact_88e2b9a0203d477288ddcf06e7c40504">NJ</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="c20240213to20240213"
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    <dei:CityAreaCode
      contextRef="c20240213to20240213"
      id="Fact_8b9ce7ede3be49debfe261cd5d0c269f">609</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="c20240213to20240213"
      id="Fact_f762e07dbea44fe3b82077a4b952332f">252-4621</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="c20240213to20240213"
      id="Fact_53527e9dd07b426b89c4a90b01bc334f">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="c20240213to20240213"
      id="Fact_b5ae2eb879894d59a157cd20aa8e3cb6">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="c20240213to20240213"
      id="Fact_cd90dce0f5354086a50decf8aba363c3">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="c20240213to20240213"
      id="Fact_640ad6a87d4f4b6d96b546be7073a992">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="c20240213to20240213_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_bdf92a25eb5a4f798f957af24ba248a0">Common Stock, $0.10 Par Value</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20240213to20240213_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_bac72eab5ac94fb38568200787ee7cd8">BMY</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20240213to20240213_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_f4c597a33f27418993f7691beb99f98f">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20240213to20240213_StatementClassOfStockAxis_One000NotesDue2025Member"
      id="Fact_bf131d5599b04378a7e7578c4e1fd852">1.000% Notes due 2025</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20240213to20240213_StatementClassOfStockAxis_One000NotesDue2025Member"
      id="Fact_cf567ece21bc4695a51b745bb34f6af7">BMY25</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20240213to20240213_StatementClassOfStockAxis_One000NotesDue2025Member"
      id="Fact_3193e303444742628cd91d8778da8a07">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20240213to20240213_StatementClassOfStockAxis_One750NotesDue2035Member"
      id="Fact_9970000eed5642b695f8fa8b6d01d2e3">1.750% Notes due 2035</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20240213to20240213_StatementClassOfStockAxis_One750NotesDue2035Member"
      id="Fact_0263af827bfd4d48a9636ebfc439e936">BMY35</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20240213to20240213_StatementClassOfStockAxis_One750NotesDue2035Member"
      id="Fact_bd48107d45c04d178ba618d7cff6595d">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20240213to20240213_StatementClassOfStockAxis_CelgeneContingentValueRightsMember"
      id="Fact_f4786b7f02724fe8b350ba8d8f8bf166">Celgene Contingent Value Rights</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20240213to20240213_StatementClassOfStockAxis_CelgeneContingentValueRightsMember"
      id="Fact_b5dd7c7db2c3443e8691d6c38d77ffdf">CELG RT</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20240213to20240213_StatementClassOfStockAxis_CelgeneContingentValueRightsMember"
      id="Fact_62c15cb66834400684588b00d1bb440b">NYSE</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="c20240213to20240213"
      id="Fact_5bb1a3d40a0446eda9f4308bb72407cc">false</dei:EntityEmergingGrowthCompany>
</xbrl>
