Postretirement Benefits - Schedule of Pension Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	$ 635,056	$ 627,560
ABO	568,438	562,372
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]
Funded benefit pension plans PBO	561,615	554,957
Funded benefit pension plans fair value of plan assets	614,845	570,767
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Funded benefit pension plans ABO	500,010	493,040
Funded benefit pension plans fair value of plan assets	614,845	570,767
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	635,056	627,560	$ 562,567
Qualified Plan | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	561,615	554,957
ABO	500,010	493,040
Nonqualified Plan | SERP
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation	73,441	72,603
ABO	$ 68,428	$ 69,332