Pensions Benefit Plans and Other Postretirement Benefits - Changes in Fair Value of Pension Plan Assets (Details) - Pension Benefit Plans. - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
U.S.
Changes in fair value of pension plan assets
Fair value at beginning of year	$ 837	$ 812
Actual gain (loss) on plan assets	30	94
Benefit payments	(78)	(70)
Employer contributions	5	1
Net change in fair value of assets	(43)	25
Fair value at end of year	794	837
Non-U.S.
Changes in fair value of pension plan assets
Fair value at beginning of year	564	547
Actual gain (loss) on plan assets	(12)	27
Benefit payments	(41)	(41)
Employer contributions	27	31
Participant contributions	1
Settlements	(15)	(31)
Foreign currency translation	(19)	31
Net change in fair value of assets	(59)	17
Fair value at end of year	$ 505	$ 564