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Commitments and Contingencies - Future Minimum Lease Payments (Detail) ₨ in Millions, $ in Millions | Mar. 31, 2025 INR (₨) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 INR (₨)
--- | --- | --- | ---
Operating Leased Assets [Line Items] |  |  |
2026 | ₨ 24,150.2 | $ 282.7 |
2027 | 23,694.5 | 277.4 |
2028 | 23,148.0 | 271.0 |
2029 | 21,954.8 | 257.0 |
2030 | 20,622.4 | 241.4 |
Thereafter | 115,524.0 | 1,352.3 |
Total lease payments | 229,093.9 | 2,681.8 |
Less: imputed interest | 75,164.1 | 880.0 |
Total operating lease liabilities | ₨ 153,929.8 | $ 1,801.8 | ₨ 131,043.0
Weighted average remaining lease term (in years) | 10 years 2 months 12 days | 10 years 2 months 12 days |
Weighted average discount rate | 7.25% | 7.25% |

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