Employee Benefit Plans - Change in Postretirement Benefit Obligation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Change in Benefit Obligation
Benefit obligation at beginning of period	$ 35	$ 33	$ 34
Service cost	2	2	2
Interest cost	1	1	1
Actuarial (gain) loss	(15)	1	(2)
Benefits paid	(2)	(2)	(2)
Plan amendments	(3)	0	0
Benefit obligation at end of period	18	35	33
Change in Plan Assets
Fair value of plan assets at end of period	0	0	0
Funded status at end of period	(18)	(35)	(33)
Amounts recognized in balance sheet
Current liabilities	1	2	2
Non-current liabilities	17	33	31
Net amount	18	35	33
Amounts recognized in accumulated other comprehensive income (loss)
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	(15)	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	(3)	(2)	(3)
Amount recognized in accumulated other comprehensive income (loss)	$ (18)	$ (2)	$ (3)