Financial Instruments - Summary of Reconciliation of Cash Flow Hedge Reserve (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Disclosure of detailed information about financial instruments [abstract] | |||
| Balance at the beginning of the period | $ (2) | $ 1 | $ 0 |
| Gain / (Loss) recognized in other comprehensive income during the period | (35) | (1) | 1 |
| Amount reclassified to profit or loss during the period | 35 | (3) | 1 |
| Tax impact on above | 1 | (1) | |
| Balance at the end of the period | $ (2) | $ (2) | $ 1 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The gains (losses) recognised in other comprehensive income on cash flow hedges, before tax, before reclassification adjustments. [Refer: Cash flow hedges [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of reclassification adjustments related to cash flow hedges, before tax. Reclassification adjustments are amounts reclassified to profit (loss) in the current period that were recognised in other comprehensive income in the current or previous periods. [Refer: Cash flow hedges [member]; Other comprehensive income] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition A component of equity representing the accumulated portion of gain (loss) on a hedging instrument that is determined to be an effective hedge for cash flow hedges. [Refer: Cash flow hedges [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|