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<xbrli:context id="OneReportableSegmentLiabilities08I"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">OIL</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2018-06-30</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentLiabilitiesAxis">in-bse-fin:OneReportableSegmentLiabilities08Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
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<in-bse-fin:DateOfStartOfFinancialYear contextRef="OneD">2018-04-01</in-bse-fin:DateOfStartOfFinancialYear>
<in-bse-fin:DateOfEndOfFinancialYear contextRef="OneD">2019-03-31</in-bse-fin:DateOfEndOfFinancialYear>
<in-bse-fin:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange contextRef="OneD">2018-08-02</in-bse-fin:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange>
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<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>
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<in-bse-fin:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock contextRef="OneD">Notes to financial results for the quarter ended 30th June, 2018:  n  n1. The above financial results for the quarter ended 30th June, 2018 have been reviewed &amp; recommended by the Audit &amp; Ethics Committee and approved by the Board of Directors in its meeting held on 13th August, 2018.  n  n2. The Joint Statutory Auditors of the Company have carried out Limited Review of the financial results for the quarter ended 30th June, 2018 as required under Regulation 33 of the SEBI (Listing Obligations and Disclosure  nRequirements), Regulations 2015.  n  n3. The figures for the quarter ended 31st March, 2018 are the balancing figures between audited figures in respect of the full financial year ended 31stMarch, 2018 and the published year to date figures up to the nine months ended 31st December, 2017 of relevant financial year which were subjected to limited review.  n  n4. The Comptroller and Auditor General of India has completed supplementary audit under section 143 (6) read with Section 129(4) of the Companies Act, 2013 of the Company's Audited Financial Statements (Standalone and  nConsolidated) for the year ended 31st  March, 2018 and has issued NIL Comment Certificate.  n  n5. The Board of Directors in its meeting held on 09th  February, 2018 had recommended issue of bonus shares in the ratio of one equity share of Rs. 10 each for two existing equity shares of Rs. 10 each held. The issue of bonus shares was approved by the shareholders on 21st  March, 2018 and accordingly the Company had allotted 37,83,01,304 number of equity shares on 03rd April, 2018. The Earnings per Share (both basic and diluted) for the comparative periods and year ended 31st March, 2018 have been calculated after adjustment of the number of bonus shares issued.  n  n6. The pay revision of Employees was due w.e.f  01st January, 2017. The Presidential Directives were issued on 08th November, 2017 for implementation of the same. The Company has implemented the pay revision for the  nexecutives and the same for unionised employees is under finalisation. Pending finalisation, provision of Rs.227.86 crore towards pay revision of unionised employees has been made in the accounts.  n  n7. Impairment loss, if any, on account of impairment of assets are reviewed at the year end unless there are  ncompelling circumstances.  n  n8. The Company has received show cause cum demand notices from the Directorate General of Goods and Service Tax Intelligence for Rs.  257.13 crore towards service tax on Royalty for Assam, Arunachal Pradesh and Rajasthan for the period March, 2016 to June, 2017, against which the Company has contested the show cause cum demand notices before the Appropriate Authorities. Pending adjudication of the matter, the entire Service Tax amount has been deposited by the Company under protest in May, 2018. The Company has also deposited under protest GST on Royalty payment for the period July, 2017 to June, 2018 amounting to Rs. 268.29 crore and Rs. 11.18 crore as interest thereon. The above amounts have been considered as contingent liability as on 30.06.2018.  n9. Figures of previous period's have been regrouped/reclassified, wherever necessary, to conform to current period's classification.</in-bse-fin:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock>
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<in-bse-fin:DescriptionOfOtherExpenses contextRef="OneOperatingExpenses04D">Royalty and Cess</in-bse-fin:DescriptionOfOtherExpenses>
<in-bse-fin:OtherExpenses contextRef="OneOperatingExpenses04D" unitRef="INR" decimals="-7">9676200000.00</in-bse-fin:OtherExpenses>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue01D">Crude Oil</in-bse-fin:DescriptionOfReportableSegment>
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<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue02D" unitRef="INR" decimals="-7">0.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue03D">LPG</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue03D" unitRef="INR" decimals="-7">283100000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue04D">Natural Gas</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue04D" unitRef="INR" decimals="-7">4430800000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue05D">Others</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue05D" unitRef="INR" decimals="-7">45200000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue06D">Pipeline Transportation</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue06D" unitRef="INR" decimals="-7">898200000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue07D">Renewable Energy</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue07D" unitRef="INR" decimals="-7">469400000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue08D">Unallocated Assets - Unallocated Liabilities</in-bse-fin:DescriptionOfReportableSegment>
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<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults03D">LPG</in-bse-fin:DescriptionOfReportableSegment>
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<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults05D" unitRef="INR" decimals="-7">35100000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults06D">Pipeline Transportation</in-bse-fin:DescriptionOfReportableSegment>
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<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults07D">Renewable Energy</in-bse-fin:DescriptionOfReportableSegment>
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<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets01D">Crude Oil</in-bse-fin:DescriptionOfReportableSegment>
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