Accounting for Transmission Line projects Entered into by the Group - Schedule of Movement of Contract Assets (Detail) ₨ in Millions, $ in Millions |
1 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
|
Jan. 31, 2024
INR (₨)
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2024
INR (₨)
|
Mar. 31, 2025
USD ($)
|
|
| Disclosure of detailed information about service concession arrangements [line items] | |||||
| Balance at the beginning of the year | ₨ 1,716 | $ 20 | ₨ 7,711 | ||
| Recognition of contract assets | 933 | 11 | 4,153 | ||
| Unwinding of contract assets | 183 | 2 | 530 | ||
| Balance at the end of the year | 2,832 | 33 | 1,716 | ||
| Non-current | 2,724 | 1,500 | $ 32 | ||
| Current | 108 | 216 | $ 1 | ||
| BOOM Model | |||||
| Disclosure of detailed information about service concession arrangements [line items] | |||||
| Derecognition of contract asset for BOOM projects | ₨ (10,583) | ₨ 0 | $ 0 | ₨ (10,678) | |