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, 2024	Dec. 31, 2023
Pension Benefit Plans. | U.S.
Changes in plan assets and benefit obligations were recognized in accumulated other comprehensive income
Current year actuarial (gain) loss	$ (22)	$ (15)
Amortization of actuarial loss	(14)	(9)
Change in accumulated other comprehensive loss	(36)	(24)
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	(14)	38
Amortization of actuarial loss	(10)	(9)
Settlement	(4)	(6)
Curtailment	2	(13)
Foreign currency translation	(9)	21
Change in accumulated other comprehensive loss	(37)	31
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)	(8)
Amortization of prior service credit	9	9
Change in accumulated other comprehensive loss		1
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	(1)	3
Amortization of actuarial loss	3	3
Foreign currency translation	3	(1)
Change in accumulated other comprehensive loss	$ 5	$ 5