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Equity-based compensation - Additional information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2023
USD ($)
metric
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Equity-based compensation expense $ 159 $ 152 $ 151
Accrued equity-based payments $ 13 $ 12  
Remaining weighted-average vesting period (in years) 1 year 3 months 18 days    
Long-term Incentive Plan      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Vesting period (in years) 3 years    
Number of metrics | metric 4    
Swiss Employee Share Ownership Plan and Other Share Savings Plans      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Holding period (in years) 3 years    
Minimum | Long-term Incentive Plan      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Target incentive (as a percent) 35.00%    
Payout (as a percent) 0.00%    
Maximum | Long-term Incentive Plan      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Target incentive (as a percent) 430.00%    
Payout (as a percent) 200.00%