Earnings per share (Details 1) |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2026
₨ / shares
shares
|
Mar. 31, 2026
$ / shares
shares
|
Mar. 31, 2025
₨ / shares
shares
|
Mar. 31, 2024
₨ / shares
shares
|
||||||
| Diluted earnings per share [abstract] | |||||||||
| Weighted average number of equity shares – Basic | 832,440,587 | 832,440,587 | 832,950,406 | 831,968,515 | [1] | ||||
| Dilutive effect of stock options outstanding | [2] | 891,102 | 891,102 | 1,228,728 | 1,569,165 | ||||
| Weighted average number of equity shares – Diluted | 833,331,689 | 833,331,689 | 834,179,134 | 833,537,680 | |||||
| Earnings per share of par value Rs.5 - Diluted | (per share) | [1] | ₨ 51.42 | $ 0.55 | ₨ 67.78 | ₨ 66.8 | ||||
| |||||||||