Pension and Other Post-Retirement Benefits - Assumed Health Care Cost Trend Rates (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Post Age 65	6.00%	6.25%
Medical Claims [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Pre Age 65	7.50%	6.75%
Review of historical returns
Rate to which the cost trend is expected to decline (the ultimate trend rate)	4.50%	4.50%
Year that rate reaches the ultimate trend rate	2034	2033
Prescription Drugs Claims [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Pre Age 65	13.00%	8.25%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Post Age 65	12.00%	8.25%
Review of historical returns
Rate to which the cost trend is expected to decline (the ultimate trend rate)	4.50%	4.50%
Year that rate reaches the ultimate trend rate	2034	2033
Medicare Advantage Part D
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Post Age 65	18.75%	17.95%