Capital management (Details) - Forecast - USD ($) $ in Billions |
1 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2025 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Capital management [Line Items] | |||
| Dividend per share growth rate | 4.00% | 4.00% | |
| Bottom of range | |||
| Capital management [Line Items] | |||
| Shareholder distribution percentage | 40.00% | 30.00% | 20.00% |
| Cash capital expenditure | $ 22 | $ 23 | |
| Top of range | |||
| Capital management [Line Items] | |||
| Shareholder distribution percentage | 50.00% | 40.00% | 30.00% |
| Cash capital expenditure | $ 25 | $ 27 | |