Tax provision - Income tax rate reconciliation (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of Income Tax [Abstract] | ||
| Income tax recovery at statutory rate of 27% | $ 316 | $ (10) |
| Rate differentials between jurisdictions and on specified activities | (12) | (7) |
| Non-taxable amounts including goodwill impairment | (75) | (20) |
| Tax effect of foreign tax rates | 3 | (6) |
| Tax Effect, Income tax credits | 0 | 5 |
| Deferred tax expense (income) | 7 | (2) |
| Tax Effect, Income Tax Settlement | 6 | 0 |
| Other | 0 | (3) |
| Tax recovery (provision) | $ 233 | $ (43) |
| X | ||||||||||
- Definition The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that the entity does not separately disclose in the same statement or note. [Refer: Accounting profit; Applicable tax rate] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to foreign tax rates. [Refer: Accounting profit] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The product of the accounting profit multiplied by the applicable tax rate(s). [Refer: Accounting profit; Applicable tax rate] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Disclosure of Income Tax [Abstract] No definition available.
|
| X | ||||||||||
- Definition Tax Effect, Income tax credits No definition available.
|
| X | ||||||||||
- Definition Tax Effect, Income Tax Settlement No definition available.
|
| X | ||||||||||
- Definition Tax effect of rate differential No definition available.
|
| X | ||||||||||
- Definition Tax effect of revenues exempt from taxation, including goodwill impairment No definition available.
|