Pension - Summary of Net Periodic Benefit (Income) Cost and Other Amounts Recognized in Comprehensive Income (Details) - Pension Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	[1]
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7	$ 5	$ 1
Interest cost	11	13	2
Expected return on plan assets	(17)	(16)	(3)
Amortization of prior service credit	(1)	(1)
Mark to market adjustment		1
Other	3
Net periodic benefit cost	3	2
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	5	1
Interest cost	1	2
Expected return on plan assets	(1)	(1)
Mark to market adjustment	6	16
Other		2
Net periodic benefit cost	$ 13	$ 24	$ 1

[1] 2018 begins at the Spin-Off date, October 29, 2018. Activity before the Spin-Off date was recognized under the Shared Plans.