Accounting for Transmission Line projects Entered into by the Group - Schedule of Movement of Contract Assets (Detail) (Parenthetical) - Other Than 3E NV Entity - INR (₨) ₨ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items] | |||
| Unwinding of contract asset percentage | 4.72% | 4.89% | |
| BOOM Model | |||
| Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items] | |||
| Profit included in recognition of contract assets pursuant to recognition construction revenue | ₨ 24 | ₨ 36 | ₨ 161 |