v3.25.4
Employee Benefit Plans - Summary of Change in Benefit Obligation and Plan Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
U.S.      
Change in Plan Assets      
Beginning balance $ 9,537    
Employer contributions 473    
Ending balance 11,787 $ 9,537  
Int’l.      
Change in Plan Assets      
Beginning balance 3,060    
Employer contributions 115    
Ending balance 3,897 3,060  
Pension Benefits | U.S.      
Change in Benefit Obligation      
Beginning balance 10,140 10,392  
Service cost 365 357 $ 342
Interest cost 505 465 448
Plan participants’ contributions 0 0  
Plan amendments 0 0  
Actuarial (gain) loss 402 (382)  
Foreign currency exchange rate changes 0 0  
Benefits paid (1,314) (692)  
Actual expenses/taxes 0 0  
Divestitures/Acquisitions 1,505 0  
Curtailment 101 0  
Special termination costs 26 0  
Ending balance 11,730 10,140 10,392
Change in Plan Assets      
Beginning balance 9,537 9,137  
Actual return on plan assets 1,159 338  
Foreign currency exchange rate changes 0 0  
Employer contributions 473 754  
Plan participants’ contributions 0 0  
Benefits paid (1,314) (692)  
Actual expenses 0 0  
Divestitures/Acquisitions 1,932 0  
Ending balance 11,787 9,537 9,137
Funded status 57 (603)  
Pension Benefits | Int’l.      
Change in Benefit Obligation      
Beginning balance 3,289 3,605  
Service cost 55 54 58
Interest cost 207 191 193
Plan participants’ contributions 2 2  
Plan amendments 6 18  
Actuarial (gain) loss 230 (274)  
Foreign currency exchange rate changes 63 (88)  
Benefits paid (280) (217)  
Actual expenses/taxes (7) (2)  
Divestitures/Acquisitions 493 0  
Curtailment (34) 0  
Special termination costs 0 0  
Ending balance 4,024 3,289 3,605
Change in Plan Assets      
Beginning balance 3,061 3,398  
Actual return on plan assets 395 (133)  
Foreign currency exchange rate changes 31 (77)  
Employer contributions 115 90  
Plan participants’ contributions 2 2  
Benefits paid (280) (217)  
Actual expenses (7) (2)  
Divestitures/Acquisitions 580 0  
Ending balance 3,897 3,061 3,398
Funded status (127) (228)  
Other Benefits      
Change in Benefit Obligation      
Beginning balance 1,880 2,017  
Service cost 30 34 33
Interest cost 99 98 97
Plan participants’ contributions 57 54  
Plan amendments (29) 30  
Actuarial (gain) loss 100 (144)  
Foreign currency exchange rate changes 5 (6)  
Benefits paid (204) (202)  
Actual expenses/taxes 0 0  
Divestitures/Acquisitions 28 0  
Curtailment 15 (1)  
Special termination costs 0 0  
Ending balance 1,981 1,880 2,017
Change in Plan Assets      
Beginning balance 0 0  
Actual return on plan assets 0 0  
Foreign currency exchange rate changes 0 0  
Employer contributions 147 148  
Plan participants’ contributions 57 54  
Benefits paid (204) (202)  
Actual expenses 0 0  
Divestitures/Acquisitions 0 0  
Ending balance 0 0 $ 0
Funded status $ (1,981) $ (1,880)