Pensions Benefit Plans and Other Postretirement Benefits - Funded Status (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Benefit Plans. | Minimum
Defined Benefit Plan Disclosure
Percentage of pension plan assets	10.00%
Pension Benefit Plans. | U.S.
Defined Benefit Plan Disclosure
Plan assets at fair value	$ 837	$ 812	$ 1,168
Projected benefit obligations	866	860	1,242
Plan assets less than projected benefit obligations	(29)	(48)
Items not yet recognized in pension expense and net postretirement benefit cost:
Actuarial (gain) loss	357	381
Total	357	381
Net amount recognized	328	333
Pension Benefit Plans. | Non-U.S.
Defined Benefit Plan Disclosure
Plan assets at fair value	564	547	923
Projected benefit obligations	727	669	990
Plan assets less than projected benefit obligations	(163)	(122)
Items not yet recognized in pension expense and net postretirement benefit cost:
Actuarial (gain) loss	320	289
Prior service cost	9	9
Total	329	298
Net amount recognized	166	176
Other Postretirement Benefits Plan | U.S.
Defined Benefit Plan Disclosure
Projected benefit obligations	21	22	34
Items not yet recognized in pension expense and net postretirement benefit cost:
Actuarial (gain) loss	(20)	(12)
Prior service cost	(9)	(18)
Total	(29)	(30)
Net amount recognized	(50)	(52)
Other Postretirement Benefits Plan | Non-U.S.
Defined Benefit Plan Disclosure
Projected benefit obligations	50	45	$ 76
Items not yet recognized in pension expense and net postretirement benefit cost:
Actuarial (gain) loss	(35)	(40)
Total	(35)	(40)
Net amount recognized	$ (85)	$ (85)