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Goodwill - Summary of Changes in the Carrying Amount of Goodwill by Segment (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Jun. 30, 2022
Sep. 30, 2022
Sep. 30, 2021
Goodwill [Line Items]          
Beginning balance [1]     $ 20,040 $ 20,040  
Goodwill impairment $ 0 $ 0 (745) (745) $ 0
Goodwill acquired       12  
Translation differences       (874)  
Ending balance [1] 18,433     18,433  
North America [Member]          
Goodwill [Line Items]          
Beginning balance [1]     6,474 6,474  
Translation differences       (27)  
Ending balance [1] 6,447     6,447  
Europe [Member]          
Goodwill [Line Items]          
Beginning balance [1]     8,544 8,544  
Translation differences       (559)  
Ending balance [1] 7,985     7,985  
International Markets [Member]          
Goodwill [Line Items]          
Beginning balance [1]     2,328 2,328  
Goodwill impairment       (479)  
Translation differences       (67)  
Ending balance [1] 1,782     1,782  
Other [Member]          
Goodwill [Line Items]          
Beginning balance [1]     $ 2,694 2,694  
Goodwill impairment       (266)  
Goodwill acquired       12  
Translation differences       (221)  
Ending balance [1] $ 2,219     $ 2,219  
[1] Accumulated goodwill impairment as of September 30, 2022 and December 31, 2021 was approximately $26.3 billion and $25.6 billion, respectively.