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<xbrli:context id="OneItemsThatWillBeReclassifiedToProfitAndLoss02D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">GAIL</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2020-04-01</xbrli:startDate><xbrli:endDate>2020-06-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-bse-fin:ItemsThatWillBeReclassifiedToProfitAndLossAxis"><ItemsThatWillBeReclassifiedToProfitAndLossDomain>in-bse-fin:OneItemsThatWillBeReclassifiedToProfitAndLoss02Member</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:Symbol contextRef="OneD">GAIL</in-bse-fin:Symbol>
<in-bse-fin:DateOfStartOfFinancialYear contextRef="OneD">2020-04-01</in-bse-fin:DateOfStartOfFinancialYear>
<in-bse-fin:DateOfEndOfFinancialYear contextRef="OneD">2021-03-31</in-bse-fin:DateOfEndOfFinancialYear>
<in-bse-fin:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange contextRef="OneD">2020-08-04</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">First quarter</in-bse-fin:ReportingQuarter>
<in-bse-fin:IsCompanyReportingMultisegmentOrSingleSegment contextRef="OneD">Multi segment</in-bse-fin:IsCompanyReportingMultisegmentOrSingleSegment>
<in-bse-fin:DateOfStartOfReportingPeriod contextRef="OneD">2020-04-01</in-bse-fin:DateOfStartOfReportingPeriod>
<in-bse-fin:DateOfEndOfReportingPeriod contextRef="OneD">2020-06-30</in-bse-fin:DateOfEndOfReportingPeriod>
<in-bse-fin:WhetherResultsAreAuditedOrUnaudited contextRef="OneD">Unaudited</in-bse-fin:WhetherResultsAreAuditedOrUnaudited>
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<in-bse-fin:EmployeeBenefitExpense contextRef="OneD" unitRef="INR" decimals="-7">4258000000.00</in-bse-fin:EmployeeBenefitExpense>
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<in-bse-fin:DepreciationDepletionAndAmortisationExpense contextRef="OneD" unitRef="INR" decimals="-7">5211100000.00</in-bse-fin:DepreciationDepletionAndAmortisationExpense>
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<in-bse-fin:Expenses contextRef="OneD" unitRef="INR" decimals="-7">120605600000.00</in-bse-fin:Expenses>
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<in-bse-fin:ProfitOrLossAttributableToOwnersOfParent contextRef="OneD" unitRef="INR" decimals="-7">6543300000.00</in-bse-fin:ProfitOrLossAttributableToOwnersOfParent>
<in-bse-fin:ProfitOrLossAttributableToNonControllingInterests contextRef="OneD" unitRef="INR" decimals="-7">-113600000.00</in-bse-fin:ProfitOrLossAttributableToNonControllingInterests>
<in-bse-fin:ComprehensiveIncomeForThePeriodAttributableToOwnersOfParent contextRef="OneD" unitRef="INR" decimals="-7">10666000000.00</in-bse-fin:ComprehensiveIncomeForThePeriodAttributableToOwnersOfParent>
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<in-bse-fin:PaidUpValueOfEquityShareCapital contextRef="OneD" unitRef="INR" decimals="-7">45101400000.00</in-bse-fin:PaidUpValueOfEquityShareCapital>
<in-bse-fin:FaceValueOfEquityShareCapital contextRef="OneD" unitRef="INRPerShare" decimals="INF">10</in-bse-fin:FaceValueOfEquityShareCapital>
<in-bse-fin:BasicEarningsLossPerShareFromContinuingOperations contextRef="OneD" unitRef="INRPerShare" decimals="INF">1.45</in-bse-fin:BasicEarningsLossPerShareFromContinuingOperations>
<in-bse-fin:DilutedEarningsLossPerShareFromContinuingOperations contextRef="OneD" unitRef="INRPerShare" decimals="INF">1.45</in-bse-fin:DilutedEarningsLossPerShareFromContinuingOperations>
<in-bse-fin:BasicEarningsLossPerShareFromDiscontinuedOperations contextRef="OneD" unitRef="INRPerShare" decimals="INF">0.00</in-bse-fin:BasicEarningsLossPerShareFromDiscontinuedOperations>
<in-bse-fin:DilutedEarningsLossPerShareFromDiscontinuedOperations contextRef="OneD" unitRef="INRPerShare" decimals="INF">0.00</in-bse-fin:DilutedEarningsLossPerShareFromDiscontinuedOperations>
<in-bse-fin:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" unitRef="INRPerShare" decimals="INF">1.45</in-bse-fin:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations>
<in-bse-fin:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" unitRef="INRPerShare" decimals="INF">1.45</in-bse-fin:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations>
<in-bse-fin:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock contextRef="OneD"># There is no discontinued operation during the period  n# Earnings per share for the quarter ended 30th June 2019 has been restated as per Ind AS 33 on account of issue of bonus equity shares on 12th July 2019 in the ratio of one equity share for one equity share held.   n  n1. The above unaudited consolidated financial results were reviewed by the Audit Committee and  napproved by the Board of Directors in its meetings held on 13th August 2020.  n  n2. The Financial Results have been reviewed by the Statutory Auditors as required under Regulation 33  nof the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015.  n  n3. The Parent Company has filed appeals before Appellate Tribunal (APTEL), against various  nmoderation done by PN GRB in respect of six numbers of final tariff order( s) issued by PN GRB and  nalso certain customers have challenged some of the Tariff orders of PNGRB in Court of Law.  nAdjustment on account of revision, if any will be recognized as and when the matter is finally  ndecided.  n  n4. CESTAT, Delhi vide order dated 30th November 2018 has confirmed the demand of differential  nCentral Excise duty of { 3,045.72 crore (Previous period: { 2,920.12 crore) including penalty and  ninterest in respect of an appeal filed by the Excise Department against Parent Company. Considering  nthe merits of the case, the Parent Company has filed an appeal before the Hon'ble Supreme Court.  nThe appeal filed by Parent Company has been admitted and stay has been granted by the Hon'ble  nSupreme Court on compliance of the conditions of depositing a sum of { 20 Crore and furnishing  nsecurity to the extent of { 132 Crore. Based on the favorable legal opinions obtained on the matter,  nthe Parent Company is confident of favorable outcome.  n  n5. Department of Telecommunication (DoT), Ministry of Communications, Government of India vide  nletter dated 14th July 2020 has withdrawn the additional demand of Rs. 1,83,076 crore raised on the  nParent Company towards provisional annual assessment oflicense fees in respect ofIP-II license for  nvarious financial years. With this, nothing remains payable to DoT by Parent Company.  n  n6. The COVID-19 pandemic globally and in India has impacted business in general and causing  nslowdown of economic activity. During the current quarter, the physical performance of the Parent  nCompany was impacted due to nationwide lockdown. However, the same is expected to reach to  nnormal levels during upcoming period in FY 2020-21. The Group has assessed the possible impact  nof COVID-19 in preparation of financial results based on the internal and external sources of  ninformation and expects no significant impact on the continuity of the business on long term basis,  nthe useful life of the assets and overall financial position of Group.  n  n7. Previous period figures have been regrouped/ reclassified, wherever required.</in-bse-fin:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock>
<in-bse-fin:DescriptionOfOtherExpenses contextRef="OneOperatingExpenses01D">Excise Duty</in-bse-fin:DescriptionOfOtherExpenses>
<in-bse-fin:OtherExpenses contextRef="OneOperatingExpenses01D" unitRef="INR" decimals="-7">64700000.00</in-bse-fin:OtherExpenses>
<in-bse-fin:DescriptionOfOtherExpenses contextRef="OneOperatingExpenses02D">Other Expenses</in-bse-fin:DescriptionOfOtherExpenses>
<in-bse-fin:OtherExpenses contextRef="OneOperatingExpenses02D" unitRef="INR" decimals="-7">11363200000.00</in-bse-fin:OtherExpenses>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue01D">City Gas</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue01D" unitRef="INR" decimals="-7">7392000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue02D">LPG and Liquid Hydrocarbons</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue02D" unitRef="INR" decimals="-7">7479100000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue03D">Other Segment</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue03D" unitRef="INR" decimals="-7">2394000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue04D">Petrochemicals</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue04D" unitRef="INR" decimals="-7">12216900000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue05D">Transmission Services - LPG</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue05D" unitRef="INR" decimals="-7">1535500000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue06D">Transmission Services - Natural Gas/Natural Marketing</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue06D" unitRef="INR" decimals="-7">129035100000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue07D">Unallocated</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue07D" unitRef="INR" decimals="-7">700000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:SegmentRevenue contextRef="OneD" unitRef="INR" decimals="-7">160053300000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:InterSegmentRevenue contextRef="OneD" unitRef="INR" decimals="-7">38247100000.00</in-bse-fin:InterSegmentRevenue>
<in-bse-fin:SegmentRevenueFromOperations contextRef="OneD" unitRef="INR" decimals="-7">121806200000.00</in-bse-fin:SegmentRevenueFromOperations>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults01D">City Gas</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults01D" unitRef="INR" decimals="-7">-8600000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults02D">LPG and Liquid Hydrocarbons</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults02D" unitRef="INR" decimals="-7">2662000000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults03D">Other Segment</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults03D" unitRef="INR" decimals="-7">1258000000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults04D">Petrochemicals</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults04D" unitRef="INR" decimals="-7">-1544300000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults05D">Transmission Services - LPG</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults05D" unitRef="INR" decimals="-7">814800000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults06D">Transmission Services - Natural Gas/Natural Marketing</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults06D" unitRef="INR" decimals="-7">1025900000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults07D">Unallocated</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults07D" unitRef="INR" decimals="-7">0.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneD" unitRef="INR" decimals="-7">4207800000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:SegmentFinanceCosts contextRef="OneD" unitRef="INR" decimals="-7">525600000.00</in-bse-fin:SegmentFinanceCosts>
<in-bse-fin:OtherUnallocableExpenditureNetOffUnAllocableIncome contextRef="OneD" unitRef="INR" decimals="-7">-3605200000.00</in-bse-fin:OtherUnallocableExpenditureNetOffUnAllocableIncome>
<in-bse-fin:DisclosureOfNotesOnSegmentsExplanatoryTextBlock contextRef="OneD">1. Segment revenue includes other operating income  n2. Other Segment includes GAILTel, E&amp;P &amp; Power Generation</in-bse-fin:DisclosureOfNotesOnSegmentsExplanatoryTextBlock>
<in-bse-fin:SegmentProfitBeforeTax contextRef="OneD" unitRef="INR" decimals="-7">7287400000.00</in-bse-fin:SegmentProfitBeforeTax>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets01D">City Gas</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentAssets contextRef="OneReportableSegmentAssets01D" unitRef="INR" decimals="-7">33671600000.00</in-bse-fin:SegmentAssets>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets02D">LPG and Liquid Hydrocarbons</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentAssets contextRef="OneReportableSegmentAssets02D" unitRef="INR" decimals="-7">8980100000.00</in-bse-fin:SegmentAssets>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets03D">Other Segment</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentAssets contextRef="OneReportableSegmentAssets03D" unitRef="INR" decimals="-7">16277100000.00</in-bse-fin:SegmentAssets>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets04D">Petrochemicals</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentAssets contextRef="OneReportableSegmentAssets04D" unitRef="INR" decimals="-7">97750500000.00</in-bse-fin:SegmentAssets>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets05D">Transmission Services - LPG</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentAssets contextRef="OneReportableSegmentAssets05D" unitRef="INR" decimals="-7">10656800000.00</in-bse-fin:SegmentAssets>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets06D">Transmission Services - Natural Gas/Natural Marketing</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentAssets contextRef="OneReportableSegmentAssets06D" unitRef="INR" decimals="-7">410923500000.00</in-bse-fin:SegmentAssets>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets07D">Unallocated</in-bse-fin:DescriptionOfReportableSegment>
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<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentLiabilities01D">City Gas</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentLiabilities contextRef="OneReportableSegmentLiabilities01I" unitRef="INR" decimals="-7">6408100000.00</in-bse-fin:SegmentLiabilities>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentLiabilities02D">LPG and Liquid Hydrocarbons</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentLiabilities contextRef="OneReportableSegmentLiabilities02I" unitRef="INR" decimals="-7">1665400000.00</in-bse-fin:SegmentLiabilities>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentLiabilities03D">Other Segment</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentLiabilities contextRef="OneReportableSegmentLiabilities03I" unitRef="INR" decimals="-7">1899900000.00</in-bse-fin:SegmentLiabilities>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentLiabilities04D">Petrochemicals</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentLiabilities contextRef="OneReportableSegmentLiabilities04I" unitRef="INR" decimals="-7">5428000000.00</in-bse-fin:SegmentLiabilities>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentLiabilities05D">Transmission Services - LPG</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentLiabilities contextRef="OneReportableSegmentLiabilities05I" unitRef="INR" decimals="-7">1191200000.00</in-bse-fin:SegmentLiabilities>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentLiabilities06D">Transmission Services - Natural Gas/Natural Marketing</in-bse-fin:DescriptionOfReportableSegment>
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