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<in-bse-fin:DateOfStartOfFinancialYear contextRef="OneD">2019-04-01</in-bse-fin:DateOfStartOfFinancialYear>
<in-bse-fin:DateOfEndOfFinancialYear contextRef="OneD">2020-03-31</in-bse-fin:DateOfEndOfFinancialYear>
<in-bse-fin:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange contextRef="OneD">2019-07-09</in-bse-fin:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange>
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<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">2019-04-01</in-bse-fin:DateOfStartOfReportingPeriod>
<in-bse-fin:DateOfEndOfReportingPeriod contextRef="OneD">2019-06-30</in-bse-fin:DateOfEndOfReportingPeriod>
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<in-bse-fin:DilutedEarningsLossPerShareFromDiscontinuedOperations contextRef="OneD" unitRef="INRPerShare" decimals="INF">0.84</in-bse-fin:DilutedEarningsLossPerShareFromDiscontinuedOperations>
<in-bse-fin:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" unitRef="INRPerShare" decimals="INF">9.92</in-bse-fin:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations>
<in-bse-fin:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" unitRef="INRPerShare" decimals="INF">9.91</in-bse-fin:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations>
<in-bse-fin:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock contextRef="OneD">Notes:  n  n(i) During the quarter ended June 30, 2019, the Company has allotted (a) 70,568 equity shares of Rs. 2 each fully paid-up, on exercise of stock options by employees in accordance with the Company's stock option schemes and (b) 2,91,325 equity shares of Rs. 2 each fully paid-up, on conversion of 6,120 foreign currency convertible bonds.  n  n(ii) Effective April 1, 2019, the Company has adopted Ind AS 116 “Leases” and capitalised assets taken on operating lease. The transition was effected using modified retrospective method and the impact thereof of            Rs.  3.60 crore (net of tax) has been reduced from the retained earnings as at April 1, 2019. Resultantly, the figures for the current period are not comparable with the previous periods. The impact of transition on the profit after tax for the quarter ended June 30, 2019 is not material.  n  n(iii) Exceptional item during the quarter ended June 30, 2019 represents gain on divestment of part stake in a subsidiary company to meet the regulatory norm of minimum public shareholding.  n  n(iv) The Competition Commission of India (CCI) accorded on April 18, 2019 its approval (the detailed order was uploaded on its website on June 6, 2019) for acquisition of the Company’s Electrical &amp; Automation (E&amp;A) business by Schneider Electric subject to fulfilment of certain conditions. As the sale is likely to be completed within the next one year, E&amp;A business has been classified as discontinued operation and the profit thereof has been disclosed separately for the periods presented.  n  n(v) (a) As on June 30, 2019, the Company held 28.86% of the paid up equity share capital of Mindtree Limited. Pursuant to completion of open offer for acquisition of equity shares in Mindtree Limited on July 2, 2019 and open market purchases, the Company holds 60.59% and has become the promoter and parent company.      n  n(b) As on June 30, 2019, the investment in equity shares of Mindtree Limited has been classified as investment measured at fair value through other comprehensive income for the quarter ended June 30, 2019, in the absence of significant influence over Mindtree Limited (as defined in Ind AS 28 “Investments in Associates and Joint Ventures”).  n  n(vi) Figures for the quarter ended March 31, 2019 represent the difference between audited figures for the financial year and the limited reviewed figures for the nine month period ended December 31, 2018.  n  n(vii) Figures for the previous periods have been regrouped/reclassified to conform to the classification of the current period.  n  n(viii) The above results have been reviewed by the Audit Committee and approved by the Board of Directors at its meeting held on July 23, 2019. The same have also been subjected to Limited Review by the Statutory Auditors.  n</in-bse-fin:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock>
<in-bse-fin:DescriptionOfOtherExpenses contextRef="OneOperatingExpenses01D">Other manufacturing, construction and operating expenses</in-bse-fin:DescriptionOfOtherExpenses>
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<in-bse-fin:DescriptionOfOtherExpenses contextRef="OneOperatingExpenses02D">Sales, administration and other expenses</in-bse-fin:DescriptionOfOtherExpenses>
<in-bse-fin:OtherExpenses contextRef="OneOperatingExpenses02D" unitRef="INR" decimals="-7">5452900000.00</in-bse-fin:OtherExpenses>
<in-bse-fin:DescriptionOfOtherExpenses contextRef="OneOperatingExpenses03D">Sub-contracting charges</in-bse-fin:DescriptionOfOtherExpenses>
<in-bse-fin:OtherExpenses contextRef="OneOperatingExpenses03D" unitRef="INR" decimals="-7">44233700000.00</in-bse-fin:OtherExpenses>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue01D">Defence Engineering</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue01D" unitRef="INR" decimals="-7">9674100000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue02D">Electrical &amp; Automation (discontinued operations)</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue02D" unitRef="INR" decimals="-7">11731200000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue03D">Heavy Engineering</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue03D" unitRef="INR" decimals="-7">9914700000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue04D">Infrastructure</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue04D" unitRef="INR" decimals="-7">133567200000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue05D">Less: Inter-segment assets/liabilities</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue05D" unitRef="INR" decimals="-7">0.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue06D">Less: Result of discontinued operations</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue06D" unitRef="INR" decimals="-7">0.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue07D">Less: Revenue of discontinued operations</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue07D" unitRef="INR" decimals="-7">-11731200000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue08D">Others</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue08D" unitRef="INR" decimals="-7">7206000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue09D">Power</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue09D" unitRef="INR" decimals="-7">5632400000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:InterSegmentRevenue contextRef="OneD" unitRef="INR" decimals="-7">1005500000.00</in-bse-fin:InterSegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults01D">Defence Engineering</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults01D" unitRef="INR" decimals="-7">1659300000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults02D">Electrical &amp; Automation (discontinued operations)</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults02D" unitRef="INR" decimals="-7">1775400000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults03D">Heavy Engineering</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults03D" unitRef="INR" decimals="-7">1594900000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults04D">Infrastructure</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults04D" unitRef="INR" decimals="-7">6377600000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults05D">Less: Inter-segment assets/liabilities</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults05D" unitRef="INR" decimals="-7">0.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults06D">Less: Result of discontinued operations</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults06D" unitRef="INR" decimals="-7">-1775400000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults07D">Less: Revenue of discontinued operations</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults07D" unitRef="INR" decimals="-7">0.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults08D">Others</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults08D" unitRef="INR" decimals="-7">1625600000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults09D">Power</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults09D" unitRef="INR" decimals="-7">86100000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:SegmentFinanceCosts contextRef="OneD" unitRef="INR" decimals="-7">4816300000.00</in-bse-fin:SegmentFinanceCosts>
<in-bse-fin:OtherUnallocableExpenditureNetOffUnAllocableIncome contextRef="OneD" unitRef="INR" decimals="-7">-9367700000.00</in-bse-fin:OtherUnallocableExpenditureNetOffUnAllocableIncome>
<in-bse-fin:DisclosureOfNotesOnSegmentsExplanatoryTextBlock contextRef="OneD">Notes:  n  n(I) The Company has reported segment information as per Ind AS 108  Operating Segments  read with SEBI circular dated July 5, 2016. The identification of operating segments is consistent with performance assessment and resource allocation by the management.  n  n(II) Segment composition: Infrastructure segment comprises engineering and construction of building and factories, transportation infrastructure, heavy civil infrastructure, power transmission &amp; distribution, water &amp; effluent treatment, smart world &amp; communication projects and metallurgical &amp; material handling systems. Power segment comprises turnkey solutions for Coal-based and Gas-based thermal power plants including power generation equipment with associated systems and/or balance-of-plant packages. Heavy Engineering segment comprises manufacture and supply of custom designed, engineered critical equipment &amp; systems to core sector industries like Fertiliser, Refinery, Petrochemical, Chemical, Oil &amp; Gas and Thermal &amp; Nuclear Power. Defence Engineering segment comprises design, development, prototyping, serial production, delivery, commissioning and through life-support of equipment, systems and platforms for Defence and Aerospace sectors. It also includes Defence Shipbuilding  comprising design, construction, commissioning, repair/refit and upgrades of Naval and Coast Guard vessels. Electrical &amp; Automation segment comprises manufacture and sale of low and medium voltage switchgear components, custom built low and medium voltage switchboards, electronic energy meters/protection (relays) systems and control &amp; automation products [refer note (iv) of financial results]. Others segment includes Realty (reported as a separate segment in the previous year which has been reclassified and reported under “Others” segment as the thresholds for reportability have not been met in the current period), Hydrocarbon, marketing and servicing of construction &amp; mining machinery and parts thereof, manufacture and sale of rubber processing machinery.  n  n(III) Unallocable corporate income primarily includes interest income, dividends and profit on sale of investments. Unallocable expenditure mainly includes corporate expenses not allocated to segments. Unallocable corporate assets mainly comprise investments. Corporate liabilities mainly comprise borrowings.  n  n(IV) In respect of most of the segments of the Company, sales and margins do not accrue uniformly during the year.  n  n(V) Figures for the quarter ended March 31, 2019 represent the difference between audited figures for the financial year and the limited reviewed figures for the nine month period ended December 31, 2018.  n  n(VI) Figures for the previous periods have been regrouped/reclassified to conform to the classification of the current period.</in-bse-fin:DisclosureOfNotesOnSegmentsExplanatoryTextBlock>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets01D">Defence Engineering</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentAssets contextRef="OneReportableSegmentAssets01D" unitRef="INR" decimals="-7">69186100000.00</in-bse-fin:SegmentAssets>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets02D">Electrical &amp; Automation (discontinued operations)</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentAssets contextRef="OneReportableSegmentAssets02D" unitRef="INR" decimals="-7">28240500000.00</in-bse-fin:SegmentAssets>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets03D">Heavy Engineering</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentAssets contextRef="OneReportableSegmentAssets03D" unitRef="INR" decimals="-7">31814600000.00</in-bse-fin:SegmentAssets>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets04D">Infrastructure</in-bse-fin:DescriptionOfReportableSegment>
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<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentAssets05D">Less: Inter-segment assets/liabilities</in-bse-fin:DescriptionOfReportableSegment>
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