v3.25.4
PENSION AND OTHER POSTRETIREMENT BENEFITS - Balance Sheet Impact (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Change in plan assets      
Postretirement benefit obligations other than pensions $ (111) $ (112)  
Pension ongoing income—non-service | U.S. Plans      
Change in benefit obligation      
Benefit obligation at beginning of year 11,772 12,792  
Service cost 27 28 $ 29
Interest cost 576 599 645
Plan amendments 0 0  
Actuarial (gains) losses 624 (579)  
Benefits paid (1,114) (1,069)  
Settlements and curtailments 0 0  
Foreign currency translation 0 0  
Other 0 1  
Transfers to Solstice (110) 0  
Benefit obligation at end of year 11,775 11,772 12,792
Less: Discontinued operations 0 106  
Benefit obligation - continuing operations 11,775 11,666  
Change in plan assets      
Fair value of plan assets at beginning of year 16,565 16,594  
Actual return on plan assets 842 1,008  
Company contributions 30 31  
Benefits paid (1,114) (1,069)  
Settlements and curtailments 0 0  
Foreign currency translation 0 0  
Other 0 1  
Transfers to Solstice (150) 0  
Fair value of plan assets at end of year 16,173 16,565 16,594
Less: Discontinued operations 0 149  
Fair value of plan assets at end of year - continuing operations 16,173 16,416  
Funded status of plans - continuing operations 4,398 4,750  
Prepaid pension benefit cost 4,621 4,983  
Accrued pension liabilities - current (27) (28)  
Accrued pension liabilities - noncurrent (196) (205)  
Net amount recognized - continuing operations 4,398 4,750  
Net amount recognized - discontinued operations 0 43  
Pension ongoing income—non-service | Non-U.S. Plans      
Change in benefit obligation      
Benefit obligation at beginning of year 4,161 4,718  
Service cost 4 12 11
Interest cost 179 191 200
Plan amendments 0 14  
Actuarial (gains) losses 45 (393)  
Benefits paid (254) (262)  
Settlements and curtailments (786) (14)  
Foreign currency translation 341 (106)  
Other 0 1  
Transfers to Solstice (67) 0  
Benefit obligation at end of year 3,623 4,161 4,718
Less: Discontinued operations 0 55  
Benefit obligation - continuing operations 3,623 4,106  
Change in plan assets      
Fair value of plan assets at beginning of year 5,105 5,549  
Actual return on plan assets 104 (111)  
Company contributions 21 29  
Benefits paid (254) (262)  
Settlements and curtailments (786) 0  
Foreign currency translation 380 (101)  
Other (1) 1  
Transfers to Solstice 0 0  
Fair value of plan assets at end of year 4,569 5,105 5,549
Less: Discontinued operations 0 1  
Fair value of plan assets at end of year - continuing operations 4,569 5,104  
Funded status of plans - continuing operations 946 998  
Prepaid pension benefit cost 1,321 1,430  
Accrued pension liabilities - current (12) (15)  
Accrued pension liabilities - noncurrent (363) (417)  
Net amount recognized - continuing operations 946 998  
Net amount recognized - discontinued operations 0 (54)  
Other Postretirement Benefits      
Change in benefit obligation      
Benefit obligation at beginning of year 98 116  
Interest cost 5 5 6
Actuarial (gains) losses 9 (7)  
Benefits paid (16) (16)  
Benefit obligation at end of year 96 98 116
Change in plan assets      
Fair value of plan assets at beginning of year 0 0  
Actual return on plan assets 0 0  
Company contributions 0 0  
Benefits paid 0 0  
Fair value of plan assets at end of year 0 0 $ 0
Funded status of plans - continuing operations (96) (98)  
Accrued pension liabilities - current (11) (11)  
Postretirement benefit obligations other than pensions (85) (87)  
Net amount recognized - continuing operations (96) (98)  
Foreign plans excluded from postretirement benefits other than pensions $ 24 $ 25