<?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:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="orcl-20260506.xsd" xlink:type="simple"/>
    <context id="duration_2026-05-06_to_2026-05-06">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001341439</identifier>
        </entity>
        <period>
            <startDate>2026-05-06</startDate>
            <endDate>2026-05-06</endDate>
        </period>
    </context>
    <context id="duration_2026-05-06_to_2026-05-06_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001341439</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-06</startDate>
            <endDate>2026-05-06</endDate>
        </period>
    </context>
    <context id="duration_2026-05-06_to_2026-05-06_us-gaap-StatementClassOfStockAxis_us-gaap-SeriesDPreferredStockMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001341439</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:SeriesDPreferredStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-06</startDate>
            <endDate>2026-05-06</endDate>
        </period>
    </context>
    <dei:EntityRegistrantName
      contextRef="duration_2026-05-06_to_2026-05-06"
      id="Hidden_dei_EntityRegistrantName">ORACLE CORP</dei:EntityRegistrantName>
    <dei:Security12bTitle
      contextRef="duration_2026-05-06_to_2026-05-06_us-gaap-StatementClassOfStockAxis_us-gaap-SeriesDPreferredStockMember"
      id="Hidden_dei_Security12bTitle_duration_2026-05-06_to_2026-05-06_us-gaap-StatementClassOfStockAxis_us-gaap-SeriesDPreferredStockMember">Depositary Shares, each representing a 1/2,000th interest in a share of 6.50% Series D Mandatory Convertible Preferred Stock, par value $0.01 per</dei:Security12bTitle>
    <dei:AmendmentFlag contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-259">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="duration_2026-05-06_to_2026-05-06"
      id="Hidden_dei_EntityCentralIndexKey">0001341439</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-286">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-287">2026-05-06</dei:DocumentPeriodEndDate>
    <dei:EntityIncorporationStateCountryCode contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-288">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-289">001-35992</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-290">54-2185193</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-291">2300 Oracle Way</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-292">Austin</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-293">TX</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-294">78741</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-295">(737)</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-296">867-1000</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-297">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-298">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-299">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-300">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="duration_2026-05-06_to_2026-05-06_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember"
      id="ixv-301">Common Stock, par value $0.01 per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="duration_2026-05-06_to_2026-05-06_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember"
      id="ixv-302">ORCL</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-06_to_2026-05-06_us-gaap-StatementClassOfStockAxis_us-gaap-CommonStockMember"
      id="ixv-303">NYSE</dei:SecurityExchangeName>
    <dei:TradingSymbol
      contextRef="duration_2026-05-06_to_2026-05-06_us-gaap-StatementClassOfStockAxis_us-gaap-SeriesDPreferredStockMember"
      id="ixv-304">ORCL-PRD</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="duration_2026-05-06_to_2026-05-06_us-gaap-StatementClassOfStockAxis_us-gaap-SeriesDPreferredStockMember"
      id="ixv-305">NYSE</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany contextRef="duration_2026-05-06_to_2026-05-06" id="ixv-306">false</dei:EntityEmergingGrowthCompany>
</xbrl>
