Related party disclosure - Summary of Transactions And Balances With Entities Under Joint Control (Detail) ₨ in Millions, $ in Millions |
12 Months Ended | ||||
|---|---|---|---|---|---|
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2024
INR (₨)
|
Mar. 31, 2023
INR (₨)
|
Mar. 31, 2025
USD ($)
|
|
| Statement [Line Items] | |||||
| Loans given | ₨ 292 | $ 3 | ₨ 228 | ₨ 55 | |
| Operation and maintenance expenses | 6,270 | 73 | 5,937 | 5,528 | |
| Capital Creditors | 32,545 | 40,092 | $ 381 | ||
| Fluence India ReNew JV Private Limited | Joint Control | |||||
| Statement [Line Items] | |||||
| Purchase of capital goods | 71 | 1 | 2,060 | ||
| Capital Creditors | 168 | 247 | 2 | ||
| 3E NV | Joint Control | |||||
| Statement [Line Items] | |||||
| Loans given | 270 | 3 | 176 | 55 | |
| Loans receivable | 284 | 3 | 231 | 55 | |
| Support services rendered | 0 | 0 | 5 | ||
| Interest income on loan | 9 | 0 | 0 | ||
| Trade receivable | 5 | ||||
| Interest accrued on loans given | 15 | 0 | 4 | ||
| 3E Renewable Energy Software and Services Private Limited | Joint Control | |||||
| Statement [Line Items] | |||||
| Operation and maintenance expenses | 14 | $ 0 | 35 | 11 | |
| Trade payables | ₨ 1 | ₨ 8 | ₨ 5 | $ 0 | |