v3.25.4
RETIREMENT BENEFITS - Schedule of Year-End Status of Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Plan | U.S. Plans      
Change in Benefit Obligation      
Benefit obligation at January 1 $ 30,555 $ 32,676  
Service cost 209 288 $ 292
Interest cost 1,571 1,581 1,641
Amendments 0 0  
Separation costs/other 30 (19)  
Curtailments 0 87  
Settlements 0 (8)  
Plan participant contributions 16 15  
Benefits paid (2,851) (2,706)  
Foreign exchange translation 0 0  
Actuarial (gain)/loss 1,117 (1,359)  
Benefit obligation at December 31 30,647 30,555 32,676
Change in Plan Assets      
Fair value of plan assets at January 1 29,502 31,423  
Actual return on plan assets 2,635 13  
Company contributions 703 808  
Plan participant contributions 16 15  
Benefits paid (2,851) (2,706)  
Settlements 0 (8)  
Foreign exchange translation 0 0  
Other 0 (43)  
Fair value of plan assets at December 31 30,005 29,502 31,423
Funded status at December 31 (642) (1,053)  
Amounts Recognized on the Balance Sheet      
Prepaid assets 964 983  
Other liabilities (1,606) (2,036)  
Total (642) (1,053)  
Amounts Recognized in Accumulated Other Comprehensive Loss (pre-tax)      
Unamortized prior service costs/(credits) 361 449  
Pension Plans in which Accumulated Benefit Obligation Exceeds Plan Assets at December 31      
Accumulated benefit obligation 1,669 1,641  
Fair value of plan assets 89 85  
Accumulated Benefit Obligation at December 31 30,177 30,070  
Pension Plans in which Projected Benefit Obligation Exceeds Plan Assets at December 31      
Projected benefit obligation 1,695 13,696  
Fair value of plan assets 89 11,660  
Pension Plan | Non-U.S. Plans      
Change in Benefit Obligation      
Benefit obligation at January 1 21,245 24,004  
Service cost 199 248 245
Interest cost 949 938 965
Amendments 0 0  
Separation costs/other 94 103  
Curtailments 1 (22)  
Settlements 0 (6)  
Plan participant contributions 8 9  
Benefits paid (1,362) (1,416)  
Foreign exchange translation 1,970 (989)  
Actuarial (gain)/loss (779) (1,624)  
Benefit obligation at December 31 22,325 21,245 24,004
Change in Plan Assets      
Fair value of plan assets at January 1 21,751 22,958  
Actual return on plan assets 69 414  
Company contributions 462 685  
Plan participant contributions 8 9  
Benefits paid (1,362) (1,416)  
Settlements 0 (6)  
Foreign exchange translation 1,875 (880)  
Other (28) (13)  
Fair value of plan assets at December 31 22,775 21,751 22,958
Funded status at December 31 450 506  
Amounts Recognized on the Balance Sheet      
Prepaid assets 2,773 3,155  
Other liabilities (2,323) (2,649)  
Total 450 506  
Amounts Recognized in Accumulated Other Comprehensive Loss (pre-tax)      
Unamortized prior service costs/(credits) 110 132  
Pension Plans in which Accumulated Benefit Obligation Exceeds Plan Assets at December 31      
Accumulated benefit obligation 2,916 2,793  
Fair value of plan assets 687 500  
Accumulated Benefit Obligation at December 31 21,420 20,209  
Pension Plans in which Projected Benefit Obligation Exceeds Plan Assets at December 31      
Projected benefit obligation 3,016 8,813  
Fair value of plan assets 693 6,164  
OPEB Worldwide      
Change in Benefit Obligation      
Benefit obligation at January 1 4,415 4,696  
Service cost 21 24 21
Interest cost 220 226 231
Amendments 0 0  
Separation costs/other 0 0  
Curtailments 0 0  
Settlements 0 0  
Plan participant contributions 0 0  
Benefits paid (331) (324)  
Foreign exchange translation 56 (95)  
Actuarial (gain)/loss (19) (112)  
Benefit obligation at December 31 4,362 4,415 4,696
Change in Plan Assets      
Fair value of plan assets at January 1 0 0  
Actual return on plan assets 0 0  
Company contributions 0 0  
Plan participant contributions 0 0  
Benefits paid 0 0  
Settlements 0 0  
Foreign exchange translation 0 0  
Other 0 0  
Fair value of plan assets at December 31 0 0 $ 0
Funded status at December 31 (4,362) (4,415)  
Amounts Recognized on the Balance Sheet      
Prepaid assets 0 0  
Other liabilities (4,362) (4,415)  
Total (4,362) (4,415)  
Amounts Recognized in Accumulated Other Comprehensive Loss (pre-tax)      
Unamortized prior service costs/(credits) $ 34 $ 42