v3.25.4
Goodwill and Intangible Assets - Goodwill Rollforward (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Goodwill Roll Forward      
Balance at beginning of period $ 16,706,000,000 $ 16,707,000,000  
Foreign currency 20,000,000 (23,000,000)  
Acquired   23,000,000  
Disposals   (1,000,000)  
Balance at end of period 16,726,000,000 16,706,000,000 $ 16,707,000,000
Goodwill, Impaired, Accumulated Impairment Loss      
Accumulated impairments 700,000,000    
Impairment 0 0 0
IS      
Goodwill Roll Forward      
Balance at beginning of period 435,000,000 424,000,000  
Foreign currency 2,000,000 (12,000,000)  
Acquired   23,000,000  
Disposals   0  
Balance at end of period 437,000,000 435,000,000 424,000,000
Goodwill, Impaired, Accumulated Impairment Loss      
Accumulated impairments 673,000,000    
WM      
Goodwill Roll Forward      
Balance at beginning of period 10,190,000,000 10,199,000,000  
Foreign currency 9,000,000 (8,000,000)  
Acquired   0  
Disposals   (1,000,000)  
Balance at end of period 10,199,000,000 10,190,000,000 10,199,000,000
Goodwill, Impaired, Accumulated Impairment Loss      
Accumulated impairments 0    
IM      
Goodwill Roll Forward      
Balance at beginning of period 6,081,000,000 6,084,000,000  
Foreign currency 9,000,000 (3,000,000)  
Acquired   0  
Disposals   0  
Balance at end of period 6,090,000,000 $ 6,081,000,000 $ 6,084,000,000
Goodwill, Impaired, Accumulated Impairment Loss      
Accumulated impairments $ 27,000,000