Other Income - Summary of Other Income (Detail) ₨ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Mar. 31, 2026
INR (₨)
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2024
INR (₨)
|
|
| Government grants other income | ||||
| generation based incentive | ₨ 1,141 | $ 12 | ₨ 1,395 | ₨ 1,911 |
| others | 310 | 3 | 11 | 11 |
| Compensation for loss of revenue | 16 | 0 | 294 | 221 |
| Gain on sale of property, plant and equipment and ROU assets | 61 | 1 | 4 | 1 |
| Insurance claim | 1,225 | 13 | 907 | 758 |
| Gain on disposal of subsidiaries (net) (refer Note 36) | 3,542 | 38 | 3,088 | 3,659 |
| Excess provisions written back | 352 | 4 | 0 | 89 |
| Reversal of impairment allowances of financial asset | 763 | 8 | 0 | 0 |
| Gain on acquisition of 3E NV | 2,383 | 25 | 0 | 0 |
| Miscellaneous income | 645 | 7 | 581 | 569 |
| Fair value change of mutual fund (including realised gain) | 634 | 7 | 103 | 90 |
| Total | ₨ 11,072 | $ 118 | ₨ 6,383 | ₨ 7,309 |