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Leases - Summary of Detailed Information About Maturity Analysis Of Lease Payments (Detail) - IFRS 16 [Member] - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Statement [line items]    
Undiscounted future cash flows - renewal options $ 599 $ 611
Within one year [member]    
Statement [line items]    
Undiscounted future cash flows - renewal options 4 2
Between one and two years [member]    
Statement [line items]    
Undiscounted future cash flows - renewal options 5 5
Between two and three years [member]    
Statement [line items]    
Undiscounted future cash flows - renewal options 6 9
Between three and four years [member]    
Statement [line items]    
Undiscounted future cash flows - renewal options 8 9
Between four and five years [member]    
Statement [line items]    
Undiscounted future cash flows - renewal options 8 10
After five years [member]    
Statement [line items]    
Undiscounted future cash flows - renewal options $ 568 $ 576