Pension Plans, Postretirement and Other Employee Benefits - Amounts to be Reflected as Component of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension Plans | U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial (gain) loss	$ 144	$ 290
Prior service cost/(credit)	1	1
Total	145	291
Pension Plans | Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial (gain) loss	108	168
Prior service cost/(credit)	3	4
Total	111	172
Other Postretirement Benefits Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial (gain) loss	14	32
Prior service cost/(credit)	(109)	(99)
Total	$ (95)	$ (67)