Benefit Plans - Assumptions Used to Determine Pension Expense (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2028	Dec. 31, 2024
Pension
Defined Benefit Plan Disclosure [Line Items]
Discount rate - projected benefit obligation	5.31%	2.85%	2.50%
Discount rate - interest cost	5.23%	2.49%	1.88%
Expected long-term return on plan assets	7.50%	6.79%	6.75%
OPEB
Defined Benefit Plan Disclosure [Line Items]
Discount rate - projected benefit obligation	5.29%	2.85%
Discount rate - service cost		2.85%
Discount rate - interest cost	5.29%	2.85%
Assumed healthcare cost trend rate	5.50%	5.75%
OPEB | Forecast
Defined Benefit Plan Disclosure [Line Items]
Assumed healthcare cost trend rate				450.00%	550.00%