v3.25.2
Revenue - Additional information (Detail) - INR (₨)
₨ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Impairment losses on receivables arising from contracts with customers ₨ 0 ₨ 1,001 ₨ 163
Cost overruns recognized from contracts with customers 102 0 641
Cost over-runs recognized from contracts with customers pending approval 3,477 3,578 3,578
Revenue from contracts with customers 96,134 81,097 78,223
Operating lease income included in revenue from contracts with customers 929 222 0
Revenue recognized from cost over runs ₨ 99 ₨ 110 ₨ 321