Employee Benefit Plans - Components of Net Periodic Benefit Cost (Credit) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 3	$ 5
Interest cost	2	1	6	4
Expected return on assets	(2)	(2)	(6)	(6)
Prior service credit	0	0	0	0
Recognized actuarial loss (gain)	0	1	0	1
Net periodic benefit cost (credit)	1	1	3	4
Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	1
Interest cost	1	1	3	2
Expected return on assets	0	0	0	0
Prior service credit	(2)	(3)	(7)	(8)
Recognized actuarial loss (gain)	(1)	0	(2)	0
Net periodic benefit cost (credit)	$ (2)	$ (2)	$ (6)	$ (5)