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Provisions - Summary of Provisions by Class (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of other provisions [line items]    
Beginning balance $ 763 $ 911
Effect of movements in foreign exchange (25) (56)
Provisions made 203 264
Provisions used (213) (225)
Provisions reversed (48) (32)
Other movements (75) (99)
Ending balance 605 763
Restructuring [Member]    
Disclosure of other provisions [line items]    
Beginning balance 104 103
Effect of movements in foreign exchange (2) 8
Provisions made 63 55
Provisions used (73) (54)
Provisions reversed (13) (7)
Other movements 1 (1)
Ending balance 80 104
Disputes [Member]    
Disclosure of other provisions [line items]    
Beginning balance 489 436
Effect of movements in foreign exchange (20) (40)
Provisions made 132 102
Provisions used (129) (80)
Provisions reversed (35) (24)
Other movements (18) 95
Ending balance 420 489
Other - Disputes [Member]    
Disclosure of other provisions [line items]    
Beginning balance 170 372
Effect of movements in foreign exchange (4) (24)
Provisions made 9 107
Provisions used (11) (91)
Provisions reversed (1) (1)
Other movements (58) (193)
Ending balance $ 106 $ 170