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Goodwill - Summary of Changes in the Carrying Amount of Goodwill by Segment (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Goodwill [Line Items]          
Beginning balance [1]       $ 17,633  
Goodwill impairment $ 0 $ (700) $ 0 (700) $ (745)
Goodwill reclassified as assets to held for sale       (19)  
Translation differences       (29)  
Ending balance [1] 16,885     16,885  
North America [Member]          
Goodwill [Line Items]          
Beginning balance [1]       6,450  
Goodwill impairment       0  
Goodwill reclassified as assets to held for sale       0  
Translation differences       (1)  
Ending balance [1] 6,449     6,449  
Europe [Member]          
Goodwill [Line Items]          
Beginning balance [1]       8,302  
Goodwill impairment       0  
Goodwill reclassified as assets to held for sale       0  
Translation differences       (47)  
Ending balance [1] 8,255     8,255  
International Markets [Member]          
Goodwill [Line Items]          
Beginning balance [1]       1,339  
Goodwill impairment       (700)  
Goodwill reclassified as assets to held for sale       (19)  
Translation differences       27  
Ending balance [1] 647     647  
Other [Member] | Medis Reporting Unit [Member]          
Goodwill [Line Items]          
Beginning balance [1]       249  
Goodwill impairment       0  
Goodwill reclassified as assets to held for sale       0  
Translation differences       (3)  
Ending balance [1] 246     246  
Other [Member] | Tevas API Reporting Unit [Member]          
Goodwill [Line Items]          
Beginning balance [1]       1,293  
Goodwill impairment       0  
Goodwill reclassified as assets to held for sale       0  
Translation differences       (5)  
Ending balance [1] $ 1,288     $ 1,288  
[1] Cumulative goodwill impairment as of September 30, 2023 and December 31, 2022 was approximately $28.3 billion and $27.6 billion, respectively.