Deferred tax assets and liabilities (Details 2) - INR (₨) ₨ in Millions	Mar. 31, 2026	Mar. 31, 2025
Disclosure Of Deferred tax assets and liabilities [Line Items]
Unrecognized tax losses	₨ 2,564	₨ 1,228
Unrecognized deferred tax Assets Liabilities	₨ 2,564	₨ 1,228

The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_e&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant