Share capital - Additional Information (Detail) $ / shares in Units, ₨ in Millions, $ in Millions |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Mar. 31, 2025
INR (₨)
shares
|
Mar. 31, 2024
INR (₨)
shares
|
Mar. 31, 2023
INR (₨)
shares
|
Mar. 31, 2022
shares
|
Mar. 31, 2025
$ / shares
|
Feb. 02, 2022
USD ($)
|
|
| Disclosure of classes of share capital [line items] | ||||||
| Reduction in retained earnings due to shares repurchased into treasury | ₨ | ₨ 0 | ₨ 4,926 | ₨ 13,499 | |||
| Class A Ordinary Shares | ||||||
| Disclosure of classes of share capital [line items] | ||||||
| Par or nominal value per share | $ / shares | $ 0.0001 | |||||
| Share repurchase program authorized amount | $ | $ 250 | |||||
| Broker purchased share | 0 | 10,688,015 | 26,354,973 | |||
| Shares pending cancellation | ₨ | ₨ 0 | ₨ 4,926 | ₨ 13,499 | |||
| Shares pending cancellation | 1,655,300 | |||||
| Number of shares repurchased into treasury | 38,698,288 | 38,698,288 | ||||