<?xml version="1.0" encoding="utf-8"?>
<xbrl
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  xmlns:dei="http://xbrl.sec.gov/dei/2023"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:rtx="http://rtx.com/20231214"
  xmlns:us-gaap="http://fasb.org/us-gaap/2023"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="rtx-20231214.xsd" xlink:type="simple"/>
    <context id="c20231214to20231214">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000101829</identifier>
        </entity>
        <period>
            <startDate>2023-12-14</startDate>
            <endDate>2023-12-14</endDate>
        </period>
    </context>
    <context id="c20231214to20231214_StatementClassOfStockAxis_Two150NotesDue2030Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000101829</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">rtx:Two150NotesDue2030Member</xbrldi:explicitMember>
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        </entity>
        <period>
            <startDate>2023-12-14</startDate>
            <endDate>2023-12-14</endDate>
        </period>
    </context>
    <context id="c20231214to20231214_StatementClassOfStockAxis_CommonStockMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000101829</identifier>
            <segment>
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        <period>
            <startDate>2023-12-14</startDate>
            <endDate>2023-12-14</endDate>
        </period>
    </context>
    <dei:AmendmentFlag
      contextRef="c20231214to20231214"
      id="Fact_9e8bff04df734c57944201661fce4e88">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="c20231214to20231214"
      id="Fact_aac4bcfa7fba448aaa51ef8eddab31ed">0000101829</dei:EntityCentralIndexKey>
    <dei:DocumentType
      contextRef="c20231214to20231214"
      id="Fact_64f3bfdf00ff4c019c2f09933c18089c">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="c20231214to20231214"
      id="Fact_34b0440ee57c480bbc9f0cb9450b5826">2023-12-14</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="c20231214to20231214"
      id="Fact_0dbf6400ef2c460d8870e792e1ca3e2e">RTX CORPORATION</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="c20231214to20231214"
      id="Fact_74496f3709904ca2a0615290bb1861b6">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="c20231214to20231214"
      id="Fact_87b9e367ec57473aa223c4f6b04d1070">001-00812</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="c20231214to20231214"
      id="Fact_f851ea720fb24103b980fe8358a960c0">06-0570975</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="c20231214to20231214"
      id="Fact_81cb5344e18943a79e6d3d057963ace4">1000 Wilson Boulevard,</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="c20231214to20231214"
      id="Fact_519ca65beb0c4eada38f20250e8d8e1f">Arlington</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="c20231214to20231214"
      id="Fact_d3b551a2336549a6b726b80aee263969">VA</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="c20231214to20231214"
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    <dei:CityAreaCode
      contextRef="c20231214to20231214"
      id="Fact_1bc00dd1f71f449597213638dbc6a844">781</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="c20231214to20231214"
      id="Fact_6598c97e9ee041458e745048a2206eed">522-3000</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="c20231214to20231214"
      id="Fact_49a730dc52e54bc196391ec98134afb4">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="c20231214to20231214"
      id="Fact_49fbd720af844fdb96a10e411202559e">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="c20231214to20231214"
      id="Fact_7f0ad7ea356c490abf382a19ab77f1d4">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="c20231214to20231214"
      id="Fact_e2b34b98f2324a6d8a8ad01090ed870a">false</dei:PreCommencementIssuerTenderOffer>
    <dei:EntityEmergingGrowthCompany
      contextRef="c20231214to20231214"
      id="Fact_00b389cfa82943d8af539ca72f68069e">false</dei:EntityEmergingGrowthCompany>
    <dei:Security12bTitle
      contextRef="c20231214to20231214_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_c1472015efc042c59f76144b3dd5e63b">Common Stock ($1 par value)</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20231214to20231214_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_91766640298c4708973268c67e8a719d">RTX</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20231214to20231214_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_1c1233c9af1b4975b5d60af9c062582e">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20231214to20231214_StatementClassOfStockAxis_Two150NotesDue2030Member"
      id="Fact_6c16d184d8eb4598885fd684430d530b">2.150% Notes due 2030</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20231214to20231214_StatementClassOfStockAxis_Two150NotesDue2030Member"
      id="Fact_f5d808256242421eb731e7323de642a1">RTX 30</dei:TradingSymbol>
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      contextRef="c20231214to20231214_StatementClassOfStockAxis_Two150NotesDue2030Member"
      id="Fact_1247d25d2b4241ca9964c31d64fd1ba0">NYSE</dei:SecurityExchangeName>
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