Other current non-financial assets (Details 3) - INR (₨) ₨ in Millions |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Disclosure of other current non-financial assets [Abstract] | ||
| Balance as at April 1 | ₨ 6,113 | ₨ 5,137 |
| Revenue recognized that was included in deferred revenue at the beginning of the year | ₨ 2,823 | ₨ 2,142 |