v3.25.4
Pension and Other Postretirement Benefit Plans - Obligation and Funded Status (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Other Postretirement Benefits      
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets January 1 $ 1,040 $ 1,045  
Actual return on plan assets 86 35  
Company contributions 71 46  
Effects of exchange rate changes 0 0  
Benefits paid (90) (89)  
Settlements 0 0  
Other 0 3  
Fair value of plan assets December 31 1,107 1,040 $ 1,045
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation January 1 1,136 1,104  
Service cost 37 30 32
Interest cost 61 56 63
Actuarial losses (gains) 34 32  
Benefits paid (90) (89)  
Effects of exchange rate changes 3 (4)  
Plan amendments 0 0  
Curtailments (2) 0  
Termination benefits 0 4 0
Settlements 0 0  
Other 0 3  
Benefit obligation December 31 1,179 1,136 1,104
Funded status December 31 (72) (96)  
Recognized as:      
Other Assets 66 51  
Accrued and other current liabilities (7) (7)  
Other Noncurrent Liabilities (131) (140)  
United States | Pension Benefits      
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets January 1 9,717 9,804  
Actual return on plan assets 1,435 266  
Company contributions 267 262  
Effects of exchange rate changes 0 0  
Benefits paid (689) (615)  
Settlements 0 0  
Other 0 0  
Fair value of plan assets December 31 10,730 9,717 9,804
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation January 1 10,151 10,446  
Service cost 378 373 326
Interest cost 569 537 526
Actuarial losses (gains) 178 (595)  
Benefits paid (689) (615)  
Effects of exchange rate changes 0 0  
Plan amendments 0 0  
Curtailments 9 0  
Termination benefits 2 5 3
Settlements 0 0  
Other 0 0  
Benefit obligation December 31 10,598 10,151 10,446
Funded status December 31 132 (434)  
Recognized as:      
Other Assets 602 26  
Accrued and other current liabilities (58) (55)  
Other Noncurrent Liabilities (412) (405)  
International | Pension Benefits      
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets January 1 9,647 9,562  
Actual return on plan assets 318 637  
Company contributions 195 198  
Effects of exchange rate changes 1,010 (522)  
Benefits paid (268) (250)  
Settlements (38) (14)  
Other 42 36  
Fair value of plan assets December 31 10,906 9,647 9,562
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation January 1 8,274 9,042  
Service cost 228 243 196
Interest cost 303 294 299
Actuarial losses (gains) (962) (549)  
Benefits paid (268) (250)  
Effects of exchange rate changes 879 (473)  
Plan amendments (5) (56)  
Curtailments (4) 0  
Termination benefits 0 1 0
Settlements (38) (14)  
Other 45 36  
Benefit obligation December 31 8,452 8,274 $ 9,042
Funded status December 31 2,454 1,373  
Recognized as:      
Other Assets 2,770 1,785  
Accrued and other current liabilities (20) (18)  
Other Noncurrent Liabilities $ (296) $ (394)