Legal matters - Additional Information (Detail) ₨ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Mar. 31, 2026
INR (₨)
Mws
|
Mar. 31, 2026
USD ($)
Mws
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2024
INR (₨)
|
|
| Legal Matters [Line Items] | ||||
| Trade receivables (refer Note 9) | ₨ 24,094 | $ 257 | ₨ 24,268 | ₨ 21,856 |
| Dispute With Southern Power Distribution Company of Andhra Pradesh Limited | ||||
| Legal Matters [Line Items] | ||||
| Trade receivables (refer Note 9) | ₨ 4,650 | 3,627 | ||
| Percentage of capacity utilization factor | 23.50% | 23.50% | ||
| Percentage of future payment of capacity utilization factor | 23.50% | 23.50% | ||
| Dispute With Southern Power Distribution Company of Andhra Pradesh Limited | AP Entities | ||||
| Legal Matters [Line Items] | ||||
| PPA cumulative capacity of MW | Mws | 777 | 777 | ||
| Trade receivables (refer Note 9) | ₨ 5,719 | ₨ 5,237 | ||
| Percentage rate of refund amounts deducted with an interest | 12 |