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Post-employment benefits for associates - Additional information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of defined benefit plans [line items]      
Weighted average duration of defined benefit obligation (in years) 12 years 12 years 4 months 24 days  
Defined contribution plans charges $ 153 $ 151 $ 144
Other post-employment benefit plans      
Disclosure of defined benefit plans [line items]      
Expected rate of pension increase  
Pension plans      
Disclosure of defined benefit plans [line items]      
Expected rate of pension increase 1.00% 1.10%  
Benefit obligation      
Disclosure of defined benefit plans [line items]      
Top four countries (as a percent) 87.00%    
Benefit obligation | United States | Other post-employment benefit plans      
Disclosure of defined benefit plans [line items]      
Associates covered (as a percent) 98.00%