v3.25.4
RETIREMENT BENEFITS - Funded Status and Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Amounts recognized in AOCI      
Sum of all settlements to trigger settlement accounting (percentage) 10.00%    
U.S.      
Change in plan assets      
Plan assets at fair value at beginning of year $ 9,849    
Plan assets at fair value at year end 9,941 $ 9,849  
Amounts recognized in AOCI      
Net amount recognized in AOCI 11 12  
U.S. | Pension Plans      
Change in projected benefit obligation      
Benefit obligation at beginning of year 8,956 9,640  
Service cost 0 0 $ 0
Interest cost on benefit obligation 475 466 505
Plan amendments 0 0  
Actuarial loss (gain) 227 (262)  
Benefits paid, net of participants’ contributions (861) (888)  
Divestitures 0 0  
Settlement 0 0  
Curtailment 0 0  
Foreign exchange impact and other 0 0  
Benefit obligation at year end 8,797 8,956 9,640
Change in plan assets      
Plan assets at fair value at beginning of year 9,647 10,210  
Actual return on assets 914 266  
Company contributions, net of reimbursements 55 59  
Benefits paid, net of participants’ contributions (861) (888)  
Divestitures 0 0  
Settlement 0 0  
Foreign exchange impact and other 0 0  
Plan assets at fair value at year end 9,755 9,647 10,210
Funded status of the plans at year end 958 691  
Net amount recognized at year end      
Net amount recognized on the balance sheet 958 691  
Amounts recognized in AOCI      
Prior service (cost) benefit (1) (3)  
Net actuarial (loss) gain (5,936) (6,215)  
Net amount recognized in AOCI (5,937) (6,218)  
Accumulated benefit obligation at period end 8,797 8,956  
U.S. | Postretirement Benefit Plans      
Change in projected benefit obligation      
Benefit obligation at beginning of year 292 343  
Service cost 0 0 0
Interest cost on benefit obligation 14 16 18
Plan amendments 0 0  
Actuarial loss (gain) 10 (21)  
Benefits paid, net of participants’ contributions (49) (46)  
Divestitures 0 0  
Settlement 0 0  
Curtailment 0 0  
Foreign exchange impact and other 0 0  
Benefit obligation at year end 267 292 343
Change in plan assets      
Plan assets at fair value at beginning of year 202 231  
Actual return on assets 14 9  
Company contributions, net of reimbursements 19 8  
Benefits paid, net of participants’ contributions (49) (46)  
Divestitures 0 0  
Settlement 0 0  
Foreign exchange impact and other 0 0  
Plan assets at fair value at year end 186 202 231
Funded status of the plans at year end (81) (90)  
Net amount recognized at year end      
Net amount recognized on the balance sheet (81) (90)  
Amounts recognized in AOCI      
Prior service (cost) benefit 54 63  
Net actuarial (loss) gain 108 125  
Net amount recognized in AOCI 162 188  
Accumulated benefit obligation at period end 267 292  
Non-U.S.      
Change in plan assets      
Plan assets at fair value at beginning of year 7,013    
Plan assets at fair value at year end 8,382 7,013  
Non-U.S. | Pension Plans      
Change in projected benefit obligation      
Benefit obligation at beginning of year 6,052 7,030  
Service cost 110 115 115
Interest cost on benefit obligation 423 421 409
Plan amendments 36 (1)  
Actuarial loss (gain) 194 (335)  
Benefits paid, net of participants’ contributions (432) (394)  
Divestitures 0 (1)  
Settlement (60) (47)  
Curtailment (3) (4)  
Foreign exchange impact and other 589 (732)  
Benefit obligation at year end 6,909 6,052 7,030
Change in plan assets      
Plan assets at fair value at beginning of year 6,258 6,426  
Actual return on assets 537 131  
Company contributions, net of reimbursements 363 763  
Benefits paid, net of participants’ contributions (432) (394)  
Divestitures 0 (1)  
Settlement (60) (47)  
Foreign exchange impact and other 560 (620)  
Plan assets at fair value at year end 7,226 6,258 6,426
Funded status of the plans at year end 317 206  
Net amount recognized at year end      
Net amount recognized on the balance sheet 317 206  
Amounts recognized in AOCI      
Prior service (cost) benefit (37) (1)  
Net actuarial (loss) gain (1,653) (1,513)  
Net amount recognized in AOCI (1,690) (1,514)  
Accumulated benefit obligation at period end 6,482 5,716  
Non-U.S. | Postretirement Benefit Plans      
Change in projected benefit obligation      
Benefit obligation at beginning of year 1,014 1,208  
Service cost 1 1 1
Interest cost on benefit obligation 118 107 106
Plan amendments 0 0  
Actuarial loss (gain) 252 (1)  
Benefits paid, net of participants’ contributions (101) (96)  
Divestitures 0 0  
Settlement (2) 0  
Curtailment 0 0  
Foreign exchange impact and other 165 (205)  
Benefit obligation at year end 1,447 1,014 1,208
Change in plan assets      
Plan assets at fair value at beginning of year 755 970  
Actual return on assets 158 50  
Company contributions, net of reimbursements 208 9  
Benefits paid, net of participants’ contributions (101) (96)  
Divestitures 0 0  
Settlement 0 0  
Foreign exchange impact and other 136 (178)  
Plan assets at fair value at year end 1,156 755 $ 970
Funded status of the plans at year end (291) (259)  
Net amount recognized at year end      
Net amount recognized on the balance sheet (291) (259)  
Amounts recognized in AOCI      
Prior service (cost) benefit 17 21  
Net actuarial (loss) gain (476) (263)  
Net amount recognized in AOCI (459) (242)  
Accumulated benefit obligation at period end 1,447 1,014  
Qualified | U.S. | Pension Plans      
Change in plan assets      
Funded status of the plans at year end 1,431 1,181  
Net amount recognized at year end      
Benefit asset 1,431 1,181  
Benefit liability 0 0  
Net amount recognized on the balance sheet 1,431 1,181  
Qualified | U.S. | Postretirement Benefit Plans      
Change in plan assets      
Funded status of the plans at year end (81) (90)  
Net amount recognized at year end      
Benefit asset 0 0  
Benefit liability (81) (90)  
Net amount recognized on the balance sheet (81) (90)  
Qualified | Non-U.S. | Pension Plans      
Change in plan assets      
Funded status of the plans at year end 317 206  
Net amount recognized at year end      
Benefit asset 952 895  
Benefit liability (635) (689)  
Net amount recognized on the balance sheet 317 206  
Qualified | Non-U.S. | Postretirement Benefit Plans      
Change in plan assets      
Funded status of the plans at year end (291) (259)  
Net amount recognized at year end      
Benefit asset 0 0  
Benefit liability (291) (259)  
Net amount recognized on the balance sheet (291) (259)  
Nonqualified | U.S. | Pension Plans      
Change in plan assets      
Funded status of the plans at year end (473) (490)  
Net amount recognized at year end      
Net amount recognized on the balance sheet (473) (490)  
Nonqualified | U.S. | Postretirement Benefit Plans      
Change in plan assets      
Funded status of the plans at year end 0 0  
Net amount recognized at year end      
Net amount recognized on the balance sheet 0 0  
Nonqualified | Non-U.S. | Pension Plans      
Change in plan assets      
Funded status of the plans at year end 0 0  
Net amount recognized at year end      
Net amount recognized on the balance sheet 0 0  
Nonqualified | Non-U.S. | Postretirement Benefit Plans      
Change in plan assets      
Funded status of the plans at year end 0 0  
Net amount recognized at year end      
Net amount recognized on the balance sheet $ 0 $ 0