Employee Benefits - Expected Future Payments (Details) $ in Millions	Dec. 31, 2023 USD ($)
Pension Plan
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	$ 8
2025	8
2026	8
2027	8
2029 and thereafter	43
2028	8
Total	83
Post-Retirement Health and Welfare Benefits
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	1
2025	1
2026	1
2027	1
2029 and thereafter	2
2028	1
Total	$ 7