Income Taxes - Summary Gross Movement in Current Income Tax Assets / (Liabilities) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Current tax expense (income) and adjustments for current tax of prior periods [abstract] | |||
| Net current income tax assets / (liabilities) at the beginning | $ (29) | $ 702 | $ 374 |
| Income tax paid (net) | 973 | 662 | 1,114 |
| Current income tax expense | (1,329) | (1,435) | (1,015) |
| Interest income on income tax refund | 41 | 39 | 234 |
| Income tax on other comprehensive income | 2 | ||
| Income tax benefit arising on exercise of stock options | 5 | 4 | |
| Tax impact on buyback expenses | 2 | ||
| Translation differences | 6 | (3) | (5) |
| Net current income tax assets / (liabilities) at the end | $ (331) | $ (29) | $ 702 |
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The cash flows from income taxes paid or refunded, classified as operating activities. [Refer: Income taxes paid (refund)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Income tax benefit arising on exercise of stock options. No definition available.
|
| X | ||||||||||
- Definition Increase decrease in current tax asset (liability) due to translation differences. No definition available.
|
| X | ||||||||||
- Definition Interest receivables on income tax refund. No definition available.
|
| X | ||||||||||
- Definition Net current tax assets (liabilities). No definition available.
|
| X | ||||||||||
- Definition Tax impact on buyback expenses. No definition available.
|