Pension Benefits - Summary of Net Periodic Benefit Cost (Details) - Pension Benefits - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
United States
Defined Benefit Plan Disclosure [Line Items]
Service cost			$ 1
Interest cost	$ 1		3	$ 1
Expected return on plan assets	(3)		(5)	(1)
Net periodic benefit costs	(2)		(1)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	$ 1	5	2
Interest cost			1	1
Expected return on plan assets	(1)		(3)	(1)
Net periodic benefit costs	$ 1	$ 1	$ 3	$ 2