Employee Benefits - Assumptions Used to Determine Benefit Obligation (Details)	Dec. 31, 2025	Dec. 31, 2024
Salaried VEBA
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.01%	5.40%
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.53%	5.54%
Rate of compensation increase	2.56%	2.56%
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.15%	5.48%