Employee Benefit Plans - Components of Net Periodic Benefit Cost (Credit) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2	$ 2	$ 4	$ 5
Interest cost	2	2	3	3
Expected return on assets	(2)	(2)	(4)	(4)
Prior service credit	0	0	0	0
Net periodic benefit cost (credit)	2	2	3	4
Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	1	1
Interest cost	0	1	1	1
Expected return on assets	0	0	0	0
Prior service credit	(2)	(3)	(5)	(5)
Net periodic benefit cost (credit)	$ (1)	$ (1)	$ (3)	$ (3)