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<xbrli:context id="OneReportableSegmentRevenue07D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsAxis">in-bse-fin:OneReportableSegmentRevenue07Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourReportableSegmentRevenue01D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsAxis">in-bse-fin:FourReportableSegmentRevenue01Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourReportableSegmentRevenue02D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsAxis">in-bse-fin:FourReportableSegmentRevenue02Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourReportableSegmentRevenue03D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsAxis">in-bse-fin:FourReportableSegmentRevenue03Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourReportableSegmentRevenue04D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsAxis">in-bse-fin:FourReportableSegmentRevenue04Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourReportableSegmentRevenue05D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsAxis">in-bse-fin:FourReportableSegmentRevenue05Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourReportableSegmentRevenue06D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsAxis">in-bse-fin:FourReportableSegmentRevenue06Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourReportableSegmentRevenue07D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsAxis">in-bse-fin:FourReportableSegmentRevenue07Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentResults01D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:OneReportableSegmentResults01Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentResults02D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:OneReportableSegmentResults02Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentResults03D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:OneReportableSegmentResults03Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentResults04D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:OneReportableSegmentResults04Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentResults05D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:OneReportableSegmentResults05Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
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<xbrli:context id="OneReportableSegmentResults07D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:OneReportableSegmentResults07Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourReportableSegmentResults01D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:FourReportableSegmentResults01Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
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<xbrli:context id="FourReportableSegmentResults04D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:FourReportableSegmentResults04Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
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<xbrli:context id="FourReportableSegmentResults06D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:FourReportableSegmentResults06Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourReportableSegmentResults07D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentsFinanceCostsAxis">in-bse-fin:FourReportableSegmentResults07Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentAssets01D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentAssetsAxis">in-bse-fin:OneReportableSegmentAssets01Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentAssets02D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentAssetsAxis">in-bse-fin:OneReportableSegmentAssets02Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
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<xbrli:context id="FourItemsThatWillNotBeReclassifiedToProfitAndLoss02D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-bse-fin:ItemsThatWillNotBeReclassifiedToProfitAndLossAxis"><ItemsThatWillNotBeReclassifiedToProfitAndLossDomain>in-bse-fin:FourItemsThatWillNotBeReclassifiedToProfitAndLoss02Member</ItemsThatWillNotBeReclassifiedToProfitAndLossDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourItemsThatWillNotBeReclassifiedToProfitAndLoss03D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-bse-fin:ItemsThatWillNotBeReclassifiedToProfitAndLossAxis"><ItemsThatWillNotBeReclassifiedToProfitAndLossDomain>in-bse-fin:FourItemsThatWillNotBeReclassifiedToProfitAndLoss03Member</ItemsThatWillNotBeReclassifiedToProfitAndLossDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context>
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<xbrli:context id="OneItemsThatWillBeReclassifiedToProfitAndLoss03D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-bse-fin:ItemsThatWillBeReclassifiedToProfitAndLossAxis"><ItemsThatWillBeReclassifiedToProfitAndLossDomain>in-bse-fin:OneItemsThatWillBeReclassifiedToProfitAndLoss03Member</ItemsThatWillBeReclassifiedToProfitAndLossDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourItemsThatWillBeReclassifiedToProfitAndLoss01D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-bse-fin:ItemsThatWillBeReclassifiedToProfitAndLossAxis"><ItemsThatWillBeReclassifiedToProfitAndLossDomain>in-bse-fin:FourItemsThatWillBeReclassifiedToProfitAndLoss01Member</ItemsThatWillBeReclassifiedToProfitAndLossDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourItemsThatWillBeReclassifiedToProfitAndLoss02D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-bse-fin:ItemsThatWillBeReclassifiedToProfitAndLossAxis"><ItemsThatWillBeReclassifiedToProfitAndLossDomain>in-bse-fin:FourItemsThatWillBeReclassifiedToProfitAndLoss02Member</ItemsThatWillBeReclassifiedToProfitAndLossDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context>
<xbrli:context id="FourItemsThatWillBeReclassifiedToProfitAndLoss03D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">ONGC</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2023-07-01</xbrli:startDate><xbrli:endDate>2023-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-bse-fin:ItemsThatWillBeReclassifiedToProfitAndLossAxis"><ItemsThatWillBeReclassifiedToProfitAndLossDomain>in-bse-fin:FourItemsThatWillBeReclassifiedToProfitAndLoss03Member</ItemsThatWillBeReclassifiedToProfitAndLossDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context>
<xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><xbrli:unit id="shares"><xbrli:measure>xbrli:shares</xbrli:measure></xbrli:unit><xbrli:unit id="INRPerShare"><xbrli:divide><xbrli:unitNumerator><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unitNumerator><xbrli:unitDenominator><xbrli:measure>xbrli:shares</xbrli:measure></xbrli:unitDenominator></xbrli:divide></xbrli:unit>
<in-bse-fin:ScripCode contextRef="OneD">500312</in-bse-fin:ScripCode>
<in-bse-fin:Symbol contextRef="OneD">ONGC</in-bse-fin:Symbol>
<in-bse-fin:MSEISymbol contextRef="OneD">NOTLISTED</in-bse-fin:MSEISymbol>
<in-bse-fin:NameOfTheCompany contextRef="OneD">Oil &amp; Natural Gas Corporation Limited</in-bse-fin:NameOfTheCompany>
<in-bse-fin:ClassOfSecurity contextRef="OneD">Equity</in-bse-fin:ClassOfSecurity>
<in-bse-fin:DateOfStartOfFinancialYear contextRef="OneD">2023-04-01</in-bse-fin:DateOfStartOfFinancialYear>
<in-bse-fin:DateOfEndOfFinancialYear contextRef="OneD">2024-03-31</in-bse-fin:DateOfEndOfFinancialYear>
<in-bse-fin:DateOfBoardMeetingWhenFinancialResultsWereApproved contextRef="OneD">2023-11-10</in-bse-fin:DateOfBoardMeetingWhenFinancialResultsWereApproved>
<in-bse-fin:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange contextRef="OneD">2023-10-30</in-bse-fin:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange>
<in-bse-fin:DescriptionOfPresentationCurrency contextRef="OneD">INR</in-bse-fin:DescriptionOfPresentationCurrency>
<in-bse-fin:LevelOfRoundingUsedInFinancialStatements contextRef="OneD">Crores</in-bse-fin:LevelOfRoundingUsedInFinancialStatements>
<in-bse-fin:ReportingQuarter contextRef="OneD">Half yearly</in-bse-fin:ReportingQuarter>
<in-bse-fin:StartTimeOfBoardMeeting contextRef="OneD">13:15:00</in-bse-fin:StartTimeOfBoardMeeting>
<in-bse-fin:EndTimeOfBoardMeeting contextRef="OneD">19:00:00</in-bse-fin:EndTimeOfBoardMeeting>
<in-bse-fin:DateOfStartOfBoardMeeting contextRef="OneD">2023-11-10</in-bse-fin:DateOfStartOfBoardMeeting>
<in-bse-fin:DateOfEndOfBoardMeeting contextRef="OneD">2023-11-10</in-bse-fin:DateOfEndOfBoardMeeting>
<in-bse-fin:WhetherCashFlowStatementIsApplicableOnCompany contextRef="OneD">true</in-bse-fin:WhetherCashFlowStatementIsApplicableOnCompany>
<in-bse-fin:TypeOfCashFlowStatement contextRef="OneD">Cash Flow Indirect</in-bse-fin:TypeOfCashFlowStatement>
<in-bse-fin:DeclarationOfUnmodifiedOpinionOrStatementOnImpactOfAuditQualification contextRef="OneD">Not applicable</in-bse-fin:DeclarationOfUnmodifiedOpinionOrStatementOnImpactOfAuditQualification>
<in-bse-fin:IsCompanyReportingMultisegmentOrSingleSegment contextRef="OneD">Geographical</in-bse-fin:IsCompanyReportingMultisegmentOrSingleSegment>
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<in-bse-fin:DateOfEndOfReportingPeriod contextRef="OneD">2023-09-30</in-bse-fin:DateOfEndOfReportingPeriod>
<in-bse-fin:WhetherResultsAreAuditedOrUnaudited contextRef="OneD">Unaudited</in-bse-fin:WhetherResultsAreAuditedOrUnaudited>
<in-bse-fin:NatureOfReportStandaloneConsolidated contextRef="OneD">Consolidated</in-bse-fin:NatureOfReportStandaloneConsolidated>
<in-bse-fin:RevenueFromOperations contextRef="OneD" unitRef="INR" decimals="-7">1468737300000.00</in-bse-fin:RevenueFromOperations>
<in-bse-fin:OtherIncome contextRef="OneD" unitRef="INR" decimals="-7">25147200000.00</in-bse-fin:OtherIncome>
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<in-bse-fin:PurchasesOfStockInTrade contextRef="OneD" unitRef="INR" decimals="-7">517677900000.00</in-bse-fin:PurchasesOfStockInTrade>
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<in-bse-fin:EmployeeBenefitExpense contextRef="OneD" unitRef="INR" decimals="-7">17370000000.00</in-bse-fin:EmployeeBenefitExpense>
<in-bse-fin:FinanceCosts contextRef="OneD" unitRef="INR" decimals="-7">26033400000.00</in-bse-fin:FinanceCosts>
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<in-bse-fin:OtherExpenses contextRef="OneD" unitRef="INR" decimals="-7">341984700000.00</in-bse-fin:OtherExpenses>
<in-bse-fin:Expenses contextRef="OneD" unitRef="INR" decimals="-7">1279198200000.00</in-bse-fin:Expenses>
<in-bse-fin:ProfitBeforeExceptionalItemsAndTax contextRef="OneD" unitRef="INR" decimals="-7">214686300000.00</in-bse-fin:ProfitBeforeExceptionalItemsAndTax>
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