Provisions and contingencies - Current and non-current provisions (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of other provisions [line items] | |||
| Provisions - due within one year | $ 74 | $ 108 | |
| Provisions - due after one year | 82 | 95 | |
| Total provisions | $ 156 | 203 | $ 281 |
| Term of expected provision utilisation | 5 years | ||
| Restructuring and rationalisation provisions | |||
| Disclosure of other provisions [line items] | |||
| Provisions - due within one year | $ 22 | 59 | |
| Total provisions | 22 | 59 | 91 |
| Metal-on-metal | |||
| Disclosure of other provisions [line items] | |||
| Provisions - due within one year | 25 | 28 | |
| Provisions - due after one year | 72 | 85 | |
| Total provisions | 97 | 113 | 149 |
| Legal and other provisions | |||
| Disclosure of other provisions [line items] | |||
| Provisions - due within one year | 27 | 21 | |
| Provisions - due after one year | 10 | 10 | |
| Total provisions | $ 37 | $ 31 | $ 41 |