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Lease liabilities - Summary of lease liabilities and discount rates (Detail) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of quantitative information about lease liabilities [line Items]        
Lease liabilities $ 666 $ 566 $ 542 $ 551
0 to 1 year [member]        
Disclosure of quantitative information about lease liabilities [line Items]        
Lease liabilities $ 87 $ 39 $ 32  
Effective average monthly rate used 1.55% 1.07% 0.80%  
1 to 2 years [member]        
Disclosure of quantitative information about lease liabilities [line Items]        
Lease liabilities $ 142 $ 198 $ 116  
Effective average monthly rate used 1.17% 1.54% 1.03%  
2 to 3 years [member]        
Disclosure of quantitative information about lease liabilities [line Items]        
Lease liabilities $ 210 $ 144 $ 150  
Effective average monthly rate used 1.02% 1.23% 1.15%  
3 to 4 years [member]        
Disclosure of quantitative information about lease liabilities [line Items]        
Lease liabilities $ 46 $ 81 $ 109  
Effective average monthly rate used 0.97% 1.28% 1.25%  
4 to 5 years [member]        
Disclosure of quantitative information about lease liabilities [line Items]        
Lease liabilities $ 118 $ 43 $ 42  
Effective average monthly rate used 0.90% 0.95% 0.96%  
5 to 9 years [member]        
Disclosure of quantitative information about lease liabilities [line Items]        
Lease liabilities $ 38 $ 45 $ 86  
Effective average monthly rate used 0.81% 0.79% 0.89%  
More than 9 years [member]        
Disclosure of quantitative information about lease liabilities [line Items]        
Lease liabilities $ 25 $ 16 $ 7  
Effective average monthly rate used 0.75% 0.82% 0.80%