v3.24.0.1
Additional financial information - Changes in liabilities arising from financing activities (Details) - Long-term debt - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Changes in liabilities arising from financing activities      
Beginning of year $ 964 $ 1,148 $ 1,766
Issued or received 1,161 411 71
Redemptions, repayments or payments (613) (690) (765)
Foreign exchange movement 9 (7) (3)
Other 229 102 79
End of year 1,750 964 1,148
Credit facility      
Changes in liabilities arising from financing activities      
Beginning of year 742 941 1,568
Issued or received 1,161 411 71
Redemptions, repayments or payments (440) (610) (698)
Foreign exchange movement 0 0 0
Other 0 0 0
End of year 1,463 742 941
Debt assumed from acquisitions      
Changes in liabilities arising from financing activities      
Beginning of year 0    
Issued or received 0    
Redemptions, repayments or payments (89)    
Foreign exchange movement 0    
Other 89    
End of year 0 0  
Lease liabilities      
Changes in liabilities arising from financing activities      
Beginning of year 236 215 209
Issued or received 0 0 0
Redemptions, repayments or payments (84) (72) (67)
Foreign exchange movement 9 (7) (3)
Other 137 100 76
End of year 298 236 215
Deferred debt transaction costs      
Changes in liabilities arising from financing activities      
Beginning of year (14) (8) (11)
Issued or received 0 0 0
Redemptions, repayments or payments 0 (8) 0
Foreign exchange movement 0 0 0
Other 3 2 3
End of year $ (11) $ (14) $ (8)