Cash and borrowings - Liquidity and capital resources (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
[1] | Dec. 31, 2022 |
||||
|---|---|---|---|---|---|---|---|---|---|
| Disclosure of detailed information about borrowings [line items] | |||||||||
| Cash net of bank overdrafts | $ 553 | [1] | $ 617 | [1] | $ 300 | $ 344 | |||
| Borrowings | 3,111 | 3,125 | |||||||
| Committed facilities | |||||||||
| Disclosure of detailed information about borrowings [line items] | |||||||||
| Committed facilities | 4,100 | 4,100 | |||||||
| Borrowings | 3,100 | 3,100 | |||||||
| Revolving credit facility | |||||||||
| Disclosure of detailed information about borrowings [line items] | |||||||||
| Undrawn amount | $ 1,000 | $ 1,000 | |||||||
| |||||||||