Pension and Other Postretirement Benefits - Schedule of Net Benefit Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 8	$ 6	$ 5
Expected return on plan assets	(7)	(7)	(7)
Amortization of net actuarial loss (gain)	1	1	2
Settlement expense (income)	0	1	0
Net periodic benefit cost	2	1	0
Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost	0	0	0
Expected return on plan assets	0	0	0
Amortization of net actuarial loss (gain)	0	0	(1)
Settlement expense (income)	0	0	0
Net periodic benefit cost	0	0	(1)
Supplemental Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost	1	1	1
Expected return on plan assets	0	0	0
Amortization of net actuarial loss (gain)	0	0	0
Settlement expense (income)	0	0	0
Net periodic benefit cost	$ 1	$ 1	$ 1