Risk management - Non derivative hedging instrument (Details) - Cash flow hedging - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Risk management | ||
| Opening balance | $ 7,343 | $ 6,265 |
| Reassignment of hedging instruments | 1,316 | 1,200 |
| Realization of exports | (1,316) | (1,207) |
| Designation of new hedge items | 4 | 1,085 |
| Closing balance | $ 7,347 | $ 7,343 |
| X | ||||||||||
- Definition Amount of new hedge items designated. No definition available.
|
| X | ||||||||||
- Definition Disclosure of detailed information about financial risk management No definition available.
|
| X | ||||||||||
- Definition Represents the amount of realized exports on hedge instruments. No definition available.
|
| X | ||||||||||
- Definition Represents the amount of reassignment to hedge instruments. No definition available.
|
| X | ||||||||||
- Definition The amount of a hedging instrument, recognised as an asset. [Refer: Hedging instruments [domain]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|