Employee Benefits - Summary of Net Provident Fund Cost Recognized in Net Profit in Statement of Comprehensive Income (Details) - Provident Fund - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Disclosure Of Net Defined Benefit Liability Asset [Line Items] | |||
| Service cost | $ 113 | $ 106 | $ 101 |
| Net interest on the net defined benefit liability / asset | 3 | 2 | |
| Net provident fund cost | $ 113 | $ 109 | $ 103 |