Reconciliation of Basic and Diluted Shares Used in Computing Earnings Per Equity Share - Computation of Basic Earnings Per Equity Share (Details) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Basic earnings per share [abstract] | |||
| Profit attributable to equity holders of the Company | $ 3,158 | $ 3,167 | $ 2,981 |
| Basic earnings per equity share - weighted average number of equity shares outstanding | 4,141,611,738 | 4,138,568,090 | 4,180,897,857 |
| Basic earnings per equity share | $ 0.76 | $ 0.77 | $ 0.71 |