v3.25.4
Post-Employment Benefits - Benefit Plan Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Amounts recognized on the consolidated balance sheets      
Other long-term liabilities $ (1,410) $ (1,234)  
Defined benefit plans      
Projected benefit obligations      
Beginning of period 8,964 9,544  
Service cost 264 286 $ 270
Interest cost 484 451 432
Actuarial (gain) loss 124 (855)  
Benefits paid (371) (347)  
Other, primarily foreign currency translation adjustments 193 (115)  
End of period 9,658 8,964 9,544
Fair value of plan assets      
Beginning of period 10,551 9,839  
Actual return on plan assets 1,434 865  
Company contributions 348 326  
Benefits paid (371) (347)  
Other, primarily foreign currency translation adjustments 242 (132)  
End of period 12,204 10,551 9,839
Funded status, end of period 2,546 1,587  
Amounts recognized on the consolidated balance sheets      
Other assets 3,196 2,097  
Accounts payable and accrued liabilities (23) (20)  
Other long-term liabilities (627) (490)  
Net asset (obligation) 2,546 1,587  
Actuarial loss, net (770) (1,303)  
Prior service cost (credit) 1 1  
Accumulated other comprehensive loss (income) 771 1,304  
Other post-employment plans      
Projected benefit obligations      
Beginning of period 786 796  
Service cost 40 43 37
Interest cost 44 41 37
Actuarial (gain) loss (12) (62)  
Benefits paid (37) (31)  
Other, primarily foreign currency translation adjustments 1 (1)  
End of period 822 786 $ 796
Fair value of plan assets      
Company contributions 37 31  
Benefits paid (37) (31)  
Funded status, end of period (822) (786)  
Amounts recognized on the consolidated balance sheets      
Accounts payable and accrued liabilities (39) (42)  
Other long-term liabilities (783) (744)  
Net asset (obligation) (822) (786)  
Actuarial loss, net (181) (203)  
Prior service cost (credit) (225) (261)  
Accumulated other comprehensive loss (income) $ (44) $ (58)