Share warrants - Schedule of Warrant Obligations (Detail) - Warrant ₨ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2024
INR (₨)
|
Mar. 31, 2023
INR (₨)
|
|
| Disclosure of reserves within equity [line items] | ||||
| Beginning balance | ₨ 772 | ₨ 1,309 | ₨ 2,486 | |
| Foreign currency translation | 13 | 14 | 179 | |
| Converted to Public warrants | ||||
| Change in fair value | (595) | (551) | (1,356) | |
| Balance | 190 | $ 2 | 772 | 1,309 |
| Public Warrants | ||||
| Disclosure of reserves within equity [line items] | ||||
| Beginning balance | 558 | 915 | 1,543 | |
| Foreign currency translation | 10 | 9 | 149 | |
| Converted to Public warrants | 78 | 32 | 171 | |
| Change in fair value | (490) | (398) | (948) | |
| Balance | 156 | 2 | 558 | 915 |
| Private Warrants | ||||
| Disclosure of reserves within equity [line items] | ||||
| Beginning balance | 214 | 394 | 943 | |
| Foreign currency translation | 3 | 5 | 30 | |
| Converted to Public warrants | (78) | (32) | (171) | |
| Change in fair value | (105) | (153) | (408) | |
| Balance | ₨ 34 | $ 0 | ₨ 214 | ₨ 394 |