v3.24.0.1
Income taxes - Rate reconciliations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Reconciliation of effective tax rate      
Income taxes computed at applicable statutory rates $ 5 $ 57 $ 32
Non-deductible items 0 9 16
Withholding and other taxes 18 23 18
Losses not recognized 1 7 6
Foreign tax differential (12) (30) (3)
Adjustments recognized in the current year for income tax of prior years (7) 2 (3)
Other 0 (1) (2)
Income tax expense $ 5 $ 67 $ 64
Reconciliation of effective tax rate (as a percent)      
Applicable statutory rate (as a percent) 7.80% 22.70% 22.60%
Tax rate effect for non-tax deductible items (as a percent) 0.00% 3.60% 11.30%
Tax rate effect of withholding and other taxes (as a percent) 0.312 0.093 0.127
Tax rate effect of (gains) losses not recognized (as a percent) 0.017 0.028 0.042
Tax rate effect for foreign tax differential (as a percent) (20.30%) (12.00%) (2.10%)
Tax rate effect of current period adjustments for tax of prior periods (as a percent) (0.119) 0.008 (0.021)
Tax rate effect for other (as a percent) 0.00% (0.40%) (1.50%)
Tax rate for Income tax expense per consolidated statements of income and other comprehensive income (as a percent) 8.50% 26.80% 45.10%