Related party disclosure - Summary of Transactions And Balances With Entities Under Joint Control (Detail) ₨ in Millions, $ in Millions |
12 Months Ended | ||||
|---|---|---|---|---|---|
|
Mar. 31, 2026
INR (₨)
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2024
INR (₨)
|
Mar. 31, 2026
USD ($)
|
|
| Statement [Line Items] | |||||
| Operation and maintenance expenses | ₨ 7,498 | $ 80 | ₨ 6,270 | ₨ 5,937 | |
| Capital Creditors | 44,176 | 32,545 | $ 471 | ||
| Fluence India ReNew JV Private Limited | Joint control | |||||
| Statement [Line Items] | |||||
| Purchase of capital goods | ₨ 66 | $ 1 | 71 | 2,060 | |
| Capital Creditors | ₨ 168 | ₨ 247 | |||