v3.25.4
Pension Benefit Plans and Other Postretirement Benefits - Changes in Plan Assets and Benefit Obligations Recognized in AOCI (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Pension Benefit Plans. | U.S.    
Changes in plan assets and benefit obligations were recognized in accumulated other comprehensive income    
Current year actuarial (gain) loss $ (29) $ (22)
Amortization of actuarial loss (12) (14)
Change in accumulated other comprehensive loss (41) (36)
Pension Benefit Plans. | Non-U.S.    
Changes in plan assets and benefit obligations were recognized in accumulated other comprehensive income    
Current year actuarial (gain) loss 5 (14)
Amortization of actuarial loss (8) (10)
Settlement (6) (4)
Foreign currency translation 23 (9)
Change in accumulated other comprehensive loss 14 (37)
Other Postretirement Benefits Plan | U.S.    
Changes in plan assets and benefit obligations were recognized in accumulated other comprehensive income    
Amortization of actuarial loss   (9)
Amortization of prior service credit (2) 9
Change in accumulated other comprehensive loss (2)  
Other Postretirement Benefits Plan | Non-U.S.    
Changes in plan assets and benefit obligations were recognized in accumulated other comprehensive income    
Current year actuarial (gain) loss (11) (1)
Amortization of actuarial loss 2 3
Foreign currency translation (2) 3
Change in accumulated other comprehensive loss $ (11) $ 5