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<xbrli:context id="OneReportableSegmentLiabilities02D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">NATIONALUM</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2021-07-01</xbrli:startDate><xbrli:endDate>2021-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentLiabilitiesAxis">in-bse-fin:OneReportableSegmentLiabilities02Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentLiabilities02I"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">NATIONALUM</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2021-09-30</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentLiabilitiesAxis">in-bse-fin:OneReportableSegmentLiabilities02Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentLiabilities03D"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">NATIONALUM</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2021-07-01</xbrli:startDate><xbrli:endDate>2021-09-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentLiabilitiesAxis">in-bse-fin:OneReportableSegmentLiabilities03Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context>
<xbrli:context id="OneReportableSegmentLiabilities03I"><xbrli:entity><xbrli:identifier scheme="http://www.nseindia.com/NSESymbol">NATIONALUM</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2021-09-30</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-bse-fin:ReportableSegmentLiabilitiesAxis">in-bse-fin:OneReportableSegmentLiabilities03Member</xbrldi:explicitMember></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>
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<in-bse-fin:DisclosureOfNotesOnSegmentsExplanatoryTextBlock contextRef="OneD">(1) In absence of Audit Committee, the Financial Results have been approved at the meeting of the Board of Directors held on 12th November, 2021. Limited review as required under Regulation 33 of the SEBI (Listing Obligation and Disclosure Requirements) Regulations, 2015 has been carried out by the Statutory Auditors of the Company.      (2) Based on the recommendation of the Board, the shareholders of the Company approved final dividend of Rs.1/- per equity share (20% on face value of Rs.5/- each) amounting to Rs. 183.66 crore for the FY 2020-21 at its 40th annual general meeting held on 30th September, 2021 and the same was paid out on 25th October, 2021.    The total amount of dividend pay out for the FY 2020-21 is Rs.3.50 per equity share (interim dividend of Rs.2.50/-per share and final dividend of Rs.1/- per share) amounting to Rs.644.27 crore.      (3) ) The Board has approved interim dividend of Rs.2.00 per share (i.e. 40% on a face value of Rs.5/- each) which amounts to a total of Rs.367.33 crore.      (4) Figures pertaining to previous periods have been regrouped, recasted and rearranged, wherever necessary.</in-bse-fin:DisclosureOfNotesOnSegmentsExplanatoryTextBlock>
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