Pension, Savings and Other Postretirement Benefit Plans - Defined Benefit Pension Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Type [Extensible List]	Pension Plan	Pension Plan
Service cost	$ 3	$ 1
Interest cost	31	20
Expected return on plan assets	(52)	(42)
Amortization of net losses	26	28
Net periodic pension cost	$ 8	$ 7
Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Type [Extensible List]	Pension Plan	Pension Plan
Service cost	$ 6	$ 7
Interest cost	16	11
Expected return on plan assets	(18)	(10)
Amortization of net losses	6	8
Net periodic pension cost	$ 10	$ 16