Performance obligations and remaining performance obligations (Details) ₨ in Millions	Mar. 31, 2026 INR (₨)
Not later than one year [member]
Statements [Line Items]
Transaction price allocated to remaining performance obligations	₨ 4,039
One To Three Years [Member]
Statements [Line Items]
Transaction price allocated to remaining performance obligations	2,342
More Than Three Years [Member]
Statements [Line Items]
Transaction price allocated to remaining performance obligations	₨ 2,755

The amount of the transaction price allocated to the performance obligations that are unsatisfied (or partially unsatisfied) as of the end of the reporting period. The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties (for example, some sales taxes). [Refer: Performance obligations [domain]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2024-01-01
-Paragraph 120
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_120_a&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant