Revenue - Additional Information (Detail) - INR (₨) ₨ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Text Blocks Abstract | |||
| Transaction price allocated to remaining performance obligations | ₨ 373,976 | ₨ 364,937 | ₨ 318,756 |
| Percentage of transaction price allocated to remaining performance obligation as revenues | 63.00% | 66.00% | 66.00% |
| Explanation of when entity expects to recognise transaction price allocated to remaining performance obligations as revenue | 66%, 66% and 63%, respectively is expected to be recognized as revenues within two years, and the remainder thereafter. | 66%, 66% and 63%, respectively is expected to be recognized as revenues within two years, and the remainder thereafter. | 66%, 66% and 63%, respectively is expected to be recognized as revenues within two years, and the remainder thereafter. |