v3.26.1
Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance $ 10,980 $ 11,491 $ 10,822 $ 10,647 $ 11,491 $ 10,647
Foreign currency translation adjustment (56)   37   (47) 93
Tax on foreign currency translation adjustment 13   0   8 (8)
Foreign currency translation adjustment 2   (2)   2 (3)
Ending balance 10,424 10,980 11,081 10,822 10,424 11,081
Total            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance (229) (220) (337) (435) (220) (435)
Foreign currency translation adjustment (53) 16 37 56    
Amount of gain recognized relating to divestiture of foreign subsidiaries reclassified into net income   (3)        
Amount of currency translation adjustment relating to divestiture of foreign subsidiaries reclassified into net income (13) 5   8    
Tax on foreign currency translation adjustment (3) (18) 65 20    
Foreign currency translation adjustment for post-retirement benefit plans 2   (2)      
Foreign currency translation adjustment       (1)    
Unrealized loss on derivative hedge agreements (4) (8) 15 15    
Tax on unrealized gain on derivative hedge agreements 1 2 (2) (2)    
Ending balance (302) (229) (222) (337) (302) (222)
Foreign Currency Translation            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance (188) (191) (284) (368) (191) (368)
Foreign currency translation adjustment (53) 16 37 56    
Amount of currency translation adjustment relating to divestiture of foreign subsidiaries reclassified into net income (13) 5   8    
Tax on foreign currency translation adjustment (3) (18) 65 20    
Ending balance (257) (188) (182) (284) (257) (182)
Post-retirement Benefit Plans            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance (40) (39) (54) (53) (39) (53)
Amount of gain recognized relating to divestiture of foreign subsidiaries reclassified into net income   (3)        
Foreign currency translation adjustment for post-retirement benefit plans 2   (2)      
Foreign currency translation adjustment       (1)    
Ending balance (40) (40) (55) (54) (40) (55)
Derivative Instruments            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Beginning balance (1) 10 1 (14) 10 (14)
Unrealized loss on derivative hedge agreements (4) (8) 15 15    
Tax on unrealized gain on derivative hedge agreements 1 2 (2) (2)    
Ending balance (5) (1) 15 1 $ (5) $ 15
Income Statement Location [Axis]: us-gaap:CostOfRevenue | Total            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Reclassification of unrealized gain (loss) on foreign exchange agreements (2) (2) (1) (1)    
Income Statement Location [Axis]: us-gaap:CostOfRevenue | Derivative Instruments            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Reclassification of unrealized gain (loss) on foreign exchange agreements (2) (2) (1) (1)    
Income Statement Location [Axis]: us-gaap:OtherNonoperatingIncomeExpense | Total            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Amortization of actuarial gain on post-retirement benefit plans into other non-operating income, net 1 (1) 1      
Income Statement Location [Axis]: us-gaap:OtherNonoperatingIncomeExpense | 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 (1) 1      
Income Statement Location [Axis]: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax | Total            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Reclassification of unrealized gain (loss) on foreign exchange agreements 1 (3) 2 3    
Income Statement Location [Axis]: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax | Derivative Instruments            
Accumulated Other Comprehensive Income (Loss) [Roll Forward]            
Reclassification of unrealized gain (loss) on foreign exchange agreements $ 1 $ (3) $ 2 $ 3