v3.26.1
Goodwill - Summary of Changes in the Carrying Amount of Goodwill by Segment (Detail) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Goodwill [Line Items]    
Beginning balance $ 16,000 $ 16,000 [1]
Translation differences and other (161)  
Ending balance 15,839 [1] 16,000
United States [Member]    
Goodwill [Line Items]    
Beginning balance 5,548 5,732 [1]
Goodwill allocation related to the shift of Anda to Other Activities   (184)
Translation differences and other 0  
Ending balance 5,548 [1] 5,548
Europe [Member]    
Goodwill [Line Items]    
Beginning balance 8,812 8,812 [1]
Translation differences and other (184)  
Ending balance 8,628 [1] 8,812
International Markets [Member]    
Goodwill [Line Items]    
Beginning balance 1,166 1,166 [1]
Translation differences and other 36  
Ending balance 1,202 [1] 1,166
Other [Member]    
Goodwill [Line Items]    
Beginning balance 476 292 [1]
Goodwill allocation related to the shift of Anda to Other Activities   184
Translation differences and other (13)  
Ending balance $ 463 [1] $ 476
[1] Cumulative goodwill impairment as of June 30, 2026 and December 31, 2025, was approximately $29.6 billion in both periods.