Capital disclosures (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Disclosure of detailed information about borrowings [line items] | |||
| Borrowings | $ 371 | $ 265 | |
| Cash and cash equivalents | 202 | 641 | $ 900 |
| Cheques Issued In Excess Of Funds On Deposit | 0 | 0 | |
| Net Borrowings | 131 | (412) | |
| Equity | 5,849 | 6,954 | $ 7,223 |
| Borrowings And Equity | $ 6,220 | $ 7,219 | |
| Total Debt To Total Capital Ratio | 6.00% | 4.00% | |
| Total Capital and Debt | $ 5,980 | $ 6,542 | |
| Total Net Debt To Net Capital | 2.00% | (6.00%) | |
| Operating Loan | |||
| Disclosure of detailed information about borrowings [line items] | |||
| Borrowings | $ 0 | $ 0 | |
| Lease liabilities | |||
| Disclosure of detailed information about borrowings [line items] | |||
| Borrowings | 33 | 29 | |
| Long-Term Debt | |||
| Disclosure of detailed information about borrowings [line items] | |||
| Borrowings | 300 | 200 | |
| Derivatives | |||
| Disclosure of detailed information about borrowings [line items] | |||
| Borrowings | 0 | 0 | |
| Open letters of credit | |||
| Disclosure of detailed information about borrowings [line items] | |||
| Borrowings | $ 38 | $ 36 |