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<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">LTTS</in-bse-fin:Symbol>
<in-bse-fin:DateOfStartOfFinancialYear contextRef="OneD">2021-04-01</in-bse-fin:DateOfStartOfFinancialYear>
<in-bse-fin:DateOfEndOfFinancialYear contextRef="OneD">2022-03-31</in-bse-fin:DateOfEndOfFinancialYear>
<in-bse-fin:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange contextRef="OneD">2021-10-01</in-bse-fin:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange>
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<in-bse-fin:PaidUpValueOfEquityShareCapital contextRef="OneD" unitRef="INR" decimals="-6">210000000.00</in-bse-fin:PaidUpValueOfEquityShareCapital>
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<in-bse-fin:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock contextRef="OneD">1  Statement of cash flows has been prepared under the indirect method as set out in the Ind AS 7  Statement of Cash Flows  as specified in the Companies (Indian Accounting Standards) Rules, 2015.      2  Purchase of property, plant and equipment and intangibles represents additions to property, plant and equipment and other intangible   assets adjusted for movement of capital work-in-progress of (a) capital work-in-progress for property, plant and equipment and (b) intangible assets.      3 Cash and cash equivalents included in the statement of cash flows comprise the following:                                                                                                                Six months      Six months        Year ended                                                                                                                 ended             ended                                                                                                             30-09-2021     30-09-2020       31-03-2021   a) Cash and cash equivalents disclosed under current assets               2,854             1,677               1,426   b) Other bank balances disclosed under current assets                        4,532                 2                     576   c) Cash and cash equivalents disclosed under non-current assets        277                    2                        2   Total cash and cash equivalents as per balance sheet                          7,663              1,681                 2,004   Add: (i) Unrealised exchange (gain)/loss on cash and cash equivalents   4                     2                       26   Less: (ii) Other bank balances disclosed under current assets               4,532                2                       576   Less: (iii) Cash and cash equivalents disclosed under non-current assets 277                2                        2   Total cash and cash equivalents as per statement of cash flows             2,858          1,679                 1,452</in-bse-fin:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock>
<in-bse-fin:IsCompanyReportingMultisegmentOrSingleSegment contextRef="FourD">Multi segment</in-bse-fin:IsCompanyReportingMultisegmentOrSingleSegment>
<in-bse-fin:DateOfStartOfReportingPeriod contextRef="FourD">2021-04-01</in-bse-fin:DateOfStartOfReportingPeriod>
<in-bse-fin:DateOfEndOfReportingPeriod contextRef="FourD">2021-09-30</in-bse-fin:DateOfEndOfReportingPeriod>
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<in-bse-fin:ProfitLossForPeriod contextRef="FourD" unitRef="INR" decimals="-6">4337000000.00</in-bse-fin:ProfitLossForPeriod>
<in-bse-fin:OtherComprehensiveIncomeNetOfTaxes contextRef="FourD" unitRef="INR" decimals="-6">390000000.00</in-bse-fin:OtherComprehensiveIncomeNetOfTaxes>
<in-bse-fin:ComprehensiveIncomeForThePeriod contextRef="FourD" unitRef="INR" decimals="-6">4727000000.00</in-bse-fin:ComprehensiveIncomeForThePeriod>
<in-bse-fin:ComprehensiveIncomeForThePeriodAttributableToOwnersOfParent contextRef="FourD" unitRef="INR" decimals="-6">4727000000.00</in-bse-fin:ComprehensiveIncomeForThePeriodAttributableToOwnersOfParent>
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<in-bse-fin:PaidUpValueOfEquityShareCapital contextRef="FourD" unitRef="INR" decimals="-6">210000000.00</in-bse-fin:PaidUpValueOfEquityShareCapital>
<in-bse-fin:FaceValueOfEquityShareCapital contextRef="FourD" unitRef="INRPerShare" decimals="INF">2</in-bse-fin:FaceValueOfEquityShareCapital>
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<in-bse-fin:DilutedEarningsLossPerShareFromContinuingOperations contextRef="FourD" unitRef="INRPerShare" decimals="INF">41.05</in-bse-fin:DilutedEarningsLossPerShareFromContinuingOperations>
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<in-bse-fin:DilutedEarningsLossPerShareFromDiscontinuedOperations contextRef="FourD" unitRef="INRPerShare" decimals="INF">0.00</in-bse-fin:DilutedEarningsLossPerShareFromDiscontinuedOperations>
<in-bse-fin:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="FourD" unitRef="INRPerShare" decimals="INF">41.27</in-bse-fin:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations>
<in-bse-fin:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="FourD" unitRef="INRPerShare" decimals="INF">41.05</in-bse-fin:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations>
<in-bse-fin:DebtEquityRatio contextRef="FourD" unitRef="pure" decimals="INF">0.00</in-bse-fin:DebtEquityRatio>
<in-bse-fin:DebtServiceCoverageRatio contextRef="FourD" unitRef="pure" decimals="INF">0.00</in-bse-fin:DebtServiceCoverageRatio>
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<in-bse-fin:DescriptionOfOtherExpenses contextRef="OneOperatingExpenses01D">Other Expenses</in-bse-fin:DescriptionOfOtherExpenses>
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<in-bse-fin:DescriptionOfOtherExpenses contextRef="FourOperatingExpenses01D">Other Expenses</in-bse-fin:DescriptionOfOtherExpenses>
<in-bse-fin:OtherExpenses contextRef="FourOperatingExpenses01D" unitRef="INR" decimals="-6">6281000000.00</in-bse-fin:OtherExpenses>
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<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue03D">Plant Engineering</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue03D" unitRef="INR" decimals="-6">2438000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue04D">Telecom &amp; Hitech</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue04D" unitRef="INR" decimals="-6">2599000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentRevenue05D">Transportation</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="OneReportableSegmentRevenue05D" unitRef="INR" decimals="-6">4355000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="FourReportableSegmentRevenue01D">Industrial Products</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="FourReportableSegmentRevenue01D" unitRef="INR" decimals="-6">6085000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="FourReportableSegmentRevenue02D">Medical Devices</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="FourReportableSegmentRevenue02D" unitRef="INR" decimals="-6">3676000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="FourReportableSegmentRevenue03D">Plant Engineering</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="FourReportableSegmentRevenue03D" unitRef="INR" decimals="-6">4780000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="FourReportableSegmentRevenue04D">Telecom &amp; Hitech</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="FourReportableSegmentRevenue04D" unitRef="INR" decimals="-6">5197000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:DescriptionOfReportableSegment contextRef="FourReportableSegmentRevenue05D">Transportation</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentRevenue contextRef="FourReportableSegmentRevenue05D" unitRef="INR" decimals="-6">8462000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:SegmentRevenue contextRef="OneD" unitRef="INR" decimals="-6">14473000000.00</in-bse-fin:SegmentRevenue>
<in-bse-fin:SegmentRevenue contextRef="FourD" unitRef="INR" decimals="-6">28200000000.00</in-bse-fin:SegmentRevenue>
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<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults01D">Industrial Products</in-bse-fin:DescriptionOfReportableSegment>
<in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts contextRef="OneReportableSegmentResults01D" unitRef="INR" decimals="-6">1023000000.00</in-bse-fin:SegmentProfitLossBeforeTaxAndFinanceCosts>
<in-bse-fin:DescriptionOfReportableSegment contextRef="OneReportableSegmentResults02D">Medical Devices</in-bse-fin:DescriptionOfReportableSegment>
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