Annual report [Section 13 and 15(d), not S-K Item 405]

COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Reconciliation of the Changes in the Plans' Benefit Obligations and Fair Value of Plan Assets (Details)

v3.25.4
COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Reconciliation of the Changes in the Plans' Benefit Obligations and Fair Value of Plan Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Benefit Obligations:      
Actuarial (gain)/loss $ 700 $ (2,500)  
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 43,396    
Fair value of plan assets at end of year 45,634 43,396  
United States      
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 41,618    
Fair value of plan assets at end of year 43,761 41,618  
International Pension Benefits      
Benefit Obligations:      
Projected benefit obligation at beginning of year 1,500    
Projected benefit obligation at end of year 1,609 1,500  
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 1,778    
Fair value of plan assets at end of year 1,873 1,778  
Pension Benefits | United States      
Benefit Obligations:      
Projected benefit obligation at beginning of year 46,559 47,712  
Service cost 1,124 1,240 $ 1,172
Interest cost 2,718 2,574 2,508
Gross benefits paid (2,678) (2,604)  
Plan participants’ contributions 0 0  
Plan amendments 116 76  
Actuarial (gain)/loss 633 (2,438)  
Foreign currency exchange rate changes 0 0  
Curtailments and settlements 0 0  
Other 0 (1)  
Projected benefit obligation at end of year 48,472 46,559 47,712
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 41,499 43,491  
Actual return (loss) on plan assets 3,708 (615)  
Employer contributions 1,159 1,228  
Plan participants’ contributions 0 0  
Gross benefits paid (2,678) (2,604)  
Foreign currency exchange rate changes 0 0  
Curtailments and settlements 0 0  
Other 1 (1)  
Fair value of plan assets at end of year 43,689 41,499 43,491
Pension Benefits | International Pension Benefits      
Benefit Obligations:      
Projected benefit obligation at beginning of year 1,500 1,601  
Service cost 37 42 43
Interest cost 65 66 66
Gross benefits paid (64) (55)  
Plan participants’ contributions 4 4  
Plan amendments 0 0  
Actuarial (gain)/loss (42) (58)  
Foreign currency exchange rate changes 108 (99)  
Curtailments and settlements (2) (4)  
Other 3 3  
Projected benefit obligation at end of year 1,609 1,500 1,601
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 1,778 1,893  
Actual return (loss) on plan assets 25 41  
Employer contributions 19 27  
Plan participants’ contributions 4 4  
Gross benefits paid (64) (55)  
Foreign currency exchange rate changes 114 (118)  
Curtailments and settlements (2) (4)  
Other (1) (10)  
Fair value of plan assets at end of year 1,873 1,778 1,893
Postemployment Retirement Benefits | United States      
Benefit Obligations:      
Projected benefit obligation at beginning of year 1,850 1,974  
Service cost 17 20 20
Interest cost 109 109 116
Gross benefits paid (241) (284)  
Plan participants’ contributions 0 39  
Plan amendments 0 0  
Actuarial (gain)/loss 87 (7)  
Foreign currency exchange rate changes 0 0  
Curtailments and settlements 0 0  
Other 0 (1)  
Projected benefit obligation at end of year 1,822 1,850 1,974
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 119 98  
Actual return (loss) on plan assets 10 (2)  
Employer contributions 183 269  
Plan participants’ contributions 0 39  
Gross benefits paid (241) (284)  
Foreign currency exchange rate changes 0 0  
Curtailments and settlements 0 0  
Other 1 (1)  
Fair value of plan assets at end of year $ 72 $ 119 $ 98