Benefit Plans - Pension Plans (Details) - Pension Plans - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 2
Interest cost	11	10
Expected return on plan assets	(18)	(18)
Net loss from experience differences	3	4
Prior service cost/(benefit)	0	0
Settlement losses and other expenses	3	3
Net periodic cost/(benefit)	0	1
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	39	35
Interest cost	41	29
Expected return on plan assets	(93)	(106)
Net loss from experience differences	19	33
Prior service cost/(benefit)	(1)	(2)
Settlement losses and other expenses	0	0
Net periodic cost/(benefit)	$ 5	$ (11)