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Goodwill - Summary of Carrying Amount of Goodwill Allocated to Different Cash-generating Units (Detail) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill $ 117,043 $ 113,010
United States [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 33,387 33,578
Rest of North America [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 2,024 1,981
Mexico [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 14,697 12,823
Colombia [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 15,982 12,692
Rest of Middle Americas [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 23,576 23,242
Brazil [Member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 3,780 3,508
Rest of South America [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 1,036 1,249
Europe [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 2,157 2,081
South Africa [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 8,801 9,551
Rest of Africa [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 4,609 5,131
China [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 3,028 3,119
Rest of Asia Pacific [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill 3,407 3,505
Global Export and Holding Companies [member]    
Disclosure Of Carrying Amount Of Goodwill [line items]    
Goodwill $ 559 $ 549