v3.24.0.1
Income taxes - Expense composition (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Current income tax expense (recovery)      
For current reporting year $ 67 $ 96 $ 82
Adjustments recognized in the current year for income tax of prior years (5) 1 1
Total 62 97 83
Deferred income tax expense (recovery)      
Arising from the origination and reversal of temporary differences (55) (31) (15)
Adjustments recognized in the current year for income tax of prior years (2) 1 (4)
Total (57) (30) (19)
Income tax expense $ 5 $ 67 $ 64