Annual report pursuant to Section 13 and 15(d)

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

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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, 2024
Dec. 31, 2023
Dec. 31, 2022
Benefit Obligations:      
Actuarial (gain)/loss $ (2,500) $ 2,400  
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 45,482    
Fair value of plan assets at end of year 43,396 45,482  
United States      
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 43,589    
Fair value of plan assets at end of year 41,618 43,589  
International Pension Benefits      
Benefit Obligations:      
Projected benefit obligation at beginning of year 1,601    
Projected benefit obligation at end of year 1,500 1,601  
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 1,893    
Fair value of plan assets at end of year 1,778 1,893  
Pension Benefits | United States      
Benefit Obligations:      
Projected benefit obligation at beginning of year 47,712 43,504  
Service cost 1,240 1,172 $ 2,024
Interest cost 2,574 2,508 1,950
Gross benefits paid (2,604) (2,437)  
Plan participants’ contributions 0 0  
Plan amendments 76 699  
Actuarial (gain)/loss (2,438) 2,266  
Foreign currency exchange rate changes 0 0  
Curtailments and settlements 0 0  
Other (1) 0  
Projected benefit obligation at end of year 46,559 47,712 43,504
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 43,491 42,058  
Actual return on plan assets (615) 2,664  
Employer contributions 1,228 1,206  
Plan participants’ contributions 0 0  
Gross benefits paid (2,604) (2,437)  
Foreign currency exchange rate changes 0 0  
Curtailments and settlements 0 0  
Other (1) 0  
Fair value of plan assets at end of year 41,499 43,491 42,058
Pension Benefits | International Pension Benefits      
Benefit Obligations:      
Projected benefit obligation at beginning of year 1,601 1,416  
Service cost 42 43 68
Interest cost 66 66 45
Gross benefits paid (55) (46)  
Plan participants’ contributions 4 4  
Plan amendments 0 0  
Actuarial (gain)/loss (58) 99  
Foreign currency exchange rate changes (99) 51  
Curtailments and settlements (4) (38)  
Other 3 6  
Projected benefit obligation at end of year 1,500 1,601 1,416
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 1,893 1,643  
Actual return on plan assets 41 201  
Employer contributions 27 65  
Plan participants’ contributions 4 4  
Gross benefits paid (55) (46)  
Foreign currency exchange rate changes (118) 64  
Curtailments and settlements (4) (38)  
Other (10) 0  
Fair value of plan assets at end of year 1,778 1,893 1,643
Postemployment Retirement Benefits | United States      
Benefit Obligations:      
Projected benefit obligation at beginning of year 1,974 2,016  
Service cost 20 20 30
Interest cost 109 116 83
Gross benefits paid (284) (265)  
Plan participants’ contributions 39 34  
Plan amendments 0 0  
Actuarial (gain)/loss (7) 53  
Foreign currency exchange rate changes 0 0  
Curtailments and settlements 0 0  
Other (1) 0  
Projected benefit obligation at end of year 1,850 1,974 2,016
Fair Value of Plan Assets:      
Fair value of plan assets at beginning of year 98 215  
Actual return on plan assets (2) (8)  
Employer contributions 269 122  
Plan participants’ contributions 39 34  
Gross benefits paid (284) (265)  
Foreign currency exchange rate changes 0 0  
Curtailments and settlements 0 0  
Other (1) 0  
Fair value of plan assets at end of year $ 119 $ 98 $ 215