Business combination - Schedule Of Revenue And (Loss) / Profit Before Tax Date Of Acquisition (Detail) - 3E NV ₨ in Millions	9 Months Ended
Mar. 31, 2026 INR (₨)
Disclosure of detailed information about business combination [line items]
Revenue	₨ 1,662
Loss before tax	₨ (325)

The profit (loss) of the acquiree, since the acquisition date, included in the consolidated statement of comprehensive income. [Refer: Profit (loss)]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2025-01-01
-Paragraph B64
-Subparagraph q
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_q_i&doctype=Appendix&subtype=B
-URIDate 2025-03-27

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