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Redeemable noncontrolling interests (Tables)
 3 Months Ended
Mar. 31, 2024
Noncontrolling Interest [Abstract]  
Redeemable Noncontrolling Interest
The following table summarizes the redeemable noncontrolling interest for the following periods:
in $ millions
Balance at December 31, 2023333 
Net income attributable to redeemable noncontrolling interests2 
Adjustment to the redemption value4 
Dividends paid(13)
Balance at March 31, 2024326
Balance at December 31, 2022308 
Net income attributable to redeemable noncontrolling interests2 
Adjustment to the redemption value10 
Dividends paid(13)
Balance at March 31, 2023307