v3.25.4
Postretirement Benefits Other Than Pensions - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
employees
Dec. 31, 2024
USD ($)
Dec. 31, 2020
USD ($)
Other Postretirement Benefit Plan, Defined Benefit      
Defined Benefit Plan Disclosure [Line Items]      
Number of retired employees covered | employees 300    
Number of active employees covered | employees 100    
Pre-tax reduction to its accumulated postretirement benefit obligation     $ 11.0
Amounts that will be amortized from AOCI in next fiscal Year   $ 2.0  
Estimated future employer contributions in next fiscal year $ 0.8    
Medical Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Health care cost trend rate assumed for next fiscal year 7.90% 8.30%  
Health care cost trend rate assumed for future years 4.50% 4.70%  
Prescription Drug Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Health care cost trend rate assumed for next fiscal year 12.30% 12.30%  
Health care cost trend rate assumed for future years 4.50% 4.50%