Property, Plant and Equipment - Schedule of Changes in Capital Work-in-Progress (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Disclosure of detailed information about property, plant and equipment [abstract] | |||
| Balance at the beginning | $ 35 | $ 35 | $ 55 |
| Additions | 273 | 213 | 332 |
| Capitalised | (211) | (212) | (348) |
| Translation differences | (2) | (1) | (4) |
| Balance at the end | $ 95 | $ 35 | $ 35 |