Employee Benefit Plans - Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
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]	Total recognized - other comprehensive loss (income)	Total recognized - other comprehensive loss (income)	Total recognized - other comprehensive loss (income)
Total recognized - other comprehensive loss (income)	$ 7	$ (22)	$ (2)
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	7	9
Interest cost	8	6	5
Expected return on assets	(8)	(8)	(8)
Prior service credit	0	(1)	0
Recognized actuarial loss (gain)	0	1	1
Net Periodic Benefit Cost (Credit)	4	5	7
Net loss (gain)	6	(6)	(6)
Amortizations	0	0	(1)
Total recognized - other comprehensive loss (income)	6	(6)	(7)
Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	1	1
Interest cost	4	3	3
Expected return on assets	0	0	0
Prior service credit	(10)	(10)	(10)
Recognized actuarial loss (gain)	(2)	0	0
Net Periodic Benefit Cost (Credit)	(8)	(6)	(6)
Net loss (gain)	(8)	(29)	(5)
Amortizations	12	10	10
Total recognized - other comprehensive loss (income)	$ 4	$ (19)	$ 5