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Redeemable noncontrolling interests (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Noncontrolling Interest [Abstract]    
Beginning balance $ 333 $ 308
Net income attributable to redeemable noncontrolling interests 2 2
Adjustment to the redemption value 4 10
Dividends paid (13) (13)
Ending balance $ 326 $ 307