<?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:v="http://wwww.visa.com/20260511"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="v-20260511.xsd" xlink:type="simple"/>
    <context id="duration_2026-05-11_to_2026-05-11">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001403161</identifier>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001403161</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2026NotesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001403161</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">v:A2026NotesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2028NotesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001403161</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">v:A2028NotesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2029NotesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001403161</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">v:A2029NotesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2033NotesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001403161</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">v:A2033NotesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2034NotesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001403161</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">v:A2034NotesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2037NotesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001403161</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">v:A2037NotesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <context id="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2044NotesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001403161</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">v:A2044NotesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-11</startDate>
            <endDate>2026-05-11</endDate>
        </period>
    </context>
    <dei:AmendmentFlag contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-317">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="duration_2026-05-11_to_2026-05-11"
      id="Hidden_dei_EntityCentralIndexKey">0001403161</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-392">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-393">2026-05-11</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-394">VISA INC.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-395">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-396">001-33977</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-397">26-0267673</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-398">P.O. Box 8999</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-399">San Francisco</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-400">CA</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-401">94128-8999</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-402">(650)</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-403">432-3200</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-404">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-405">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-406">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-407">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember"
      id="ixv-408">Class&#160;A common stock, par value $0.0001 per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember"
      id="ixv-409">V</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember"
      id="ixv-410">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2026NotesMember"
      id="ixv-411">1.500% Senior Notes due 2026</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2026NotesMember"
      id="ixv-412">V26</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2026NotesMember"
      id="ixv-413">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2028NotesMember"
      id="ixv-414">2.250% Senior Notes due 2028</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2028NotesMember"
      id="ixv-415">V28</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2028NotesMember"
      id="ixv-416">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2029NotesMember"
      id="ixv-417">2.000% Senior Notes due 2029</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2029NotesMember"
      id="ixv-418">V29</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2029NotesMember"
      id="ixv-419">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2033NotesMember"
      id="ixv-420">3.125% Senior Notes due 2033</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2033NotesMember"
      id="ixv-421">V33</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2033NotesMember"
      id="ixv-422">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2034NotesMember"
      id="ixv-423">2.375% Senior Notes due 2034</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2034NotesMember"
      id="ixv-424">V34</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2034NotesMember"
      id="ixv-425">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2037NotesMember"
      id="ixv-426">3.500% Senior Notes due 2037</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2037NotesMember"
      id="ixv-427">V37</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2037NotesMember"
      id="ixv-428">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2044NotesMember"
      id="ixv-429">3.875% Senior Notes due 2044</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2044NotesMember"
      id="ixv-430">V44</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-11_to_2026-05-11_us-gaap-StatementClassOfStockAxis_v-A2044NotesMember"
      id="ixv-431">NYSE</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany contextRef="duration_2026-05-11_to_2026-05-11" id="ixv-432">false</dei:EntityEmergingGrowthCompany>
</xbrl>
