Investments - Schedule of Investment (Parenthetical) (Detail) - INR (₨) ₨ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Disclosure of detailed information about financial instruments [abstract] | ||
| Uncalled capital commitments outstanding | ₨ 2,577 | ₨ 1,576 |
| Short-term mutual funds include units lien with bank | 0 | 233 |
| Term Deposits in Lien with banks-Current | ₨ 961 | ₨ 953 |