Other non-current non-financial assets (Details) ₨ in Millions, $ in Millions |
Mar. 31, 2026
INR (₨)
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
INR (₨)
|
|---|---|---|---|
| Disclosure of other non-current non-financial assets [Line Items] | |||
| Other non-current non-financial assets | ₨ 3,545 | $ 38 | ₨ 1,696 |
| Deferred contract costs [Member] | |||
| Disclosure of other non-current non-financial assets [Line Items] | |||
| Other non-current non-financial assets | 4 | 6 | |
| Capital advances [Member] | |||
| Disclosure of other non-current non-financial assets [Line Items] | |||
| Other non-current non-financial assets | 2,995 | 1,293 | |
| Non-current prepayments [Member] | |||
| Disclosure of other non-current non-financial assets [Line Items] | |||
| Other non-current non-financial assets | 481 | 331 | |
| Non-current receivables from taxes other than income tax [Member] | |||
| Disclosure of other non-current non-financial assets [Line Items] | |||
| Other non-current non-financial assets | ₨ 65 | ₨ 66 |