v3.25.2
Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance $ 10,822 $ 10,647 $ 10,203 $ 10,176 $ 10,647 $ 10,176
Foreign currency translation adjustment 37   6   93 (59)
Tax on foreign currency translation adjustment 0   0   (8) 0
Foreign currency translation adjustment (2)   0   (3) 2
Ending balance 11,081 10,822 10,348 10,203 11,081 10,348
Total            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance (337) (435) (345) (269) (435) (269)
Foreign currency translation adjustment 37 56 6 (65)    
Tax on foreign currency translation adjustment 65 20 (5) (10)    
Income tax impact on amortization of post-retirement benefit plan items       (1)    
Foreign currency translation adjustment for post-retirement benefit plans (2)          
Foreign currency translation adjustment   (1)   2    
Unrealized gain on derivative hedge agreements 15 15   (3)    
Income tax benefit on unrealized gain on derivative hedge agreements (2) (2)        
Ending balance (222) (337) (345) (345) (222) (345)
Foreign Currency Translation            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance (284) (368) (271) (196) (368) (196)
Foreign currency translation adjustment 37 56 6 (65)    
Tax on foreign currency translation adjustment 65 20 (5) (10)    
Ending balance (182) (284) (270) (271) (182) (270)
Post-retirement Benefit Plans            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance (54) (53) (71) (72) (53) (72)
Income tax impact on amortization of post-retirement benefit plan items       (1)    
Foreign currency translation adjustment for post-retirement benefit plans (2)          
Foreign currency translation adjustment   (1)   2    
Ending balance (55) (54) (71) (71) (55) (71)
Derivative Instruments            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance 1 (14) (3) (1) (14) (1)
Unrealized gain on derivative hedge agreements 15 15   (3)    
Income tax benefit on unrealized gain on derivative hedge agreements (2) (2)        
Ending balance 15 1 (4) (3) $ 15 $ (4)
Revenue | Total            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Reclassification of unrealized gain (loss) on foreign exchange agreements 2 3 (1)      
Revenue | Derivative Instruments            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Reclassification of unrealized gain (loss) on foreign exchange agreements 2 3 $ (1)      
Cost of Revenue | Total            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Reclassification of unrealized gain (loss) on foreign exchange agreements       1    
Reclassification of unrealized gain on foreign exchange agreements into cost of revenue (1) 1        
Cost of Revenue | Derivative Instruments            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Reclassification of unrealized gain (loss) on foreign exchange agreements       $ 1    
Reclassification of unrealized gain on foreign exchange agreements into cost of revenue (1) $ 1        
Other non-operating income | Total            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Amortization of actuarial gain on post-retirement benefit plans into other non-operating income, net 1          
Other non-operating income | Post-retirement Benefit Plans            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Amortization of actuarial gain on post-retirement benefit plans into other non-operating income, net $ 1