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Pension and Savings Plans - Fair Value of Assets in the Master Trust by Asset (Details) - Pension Plan - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets $ 106.5 $ 104.8
Fair Value, Inputs, Level 1, 2 and 3    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 88.1 88.6
Fair Value, Inputs, Level 1, 2 and 3 | Corporate bonds    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 60.3 65.3
Fair Value, Inputs, Level 1, 2 and 3 | US Treasury and Government [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 19.3 17.1
Fair Value, Inputs, Level 1, 2 and 3 | Other securities    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 8.5 6.2
Level 1    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 22.2 18.0
Level 1 | Corporate bonds    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 0.0 0.0
Level 1 | US Treasury and Government [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 16.1 13.7
Level 1 | Other securities    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 6.1 4.3
Level 2    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 65.9 70.6
Level 2 | Corporate bonds    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 60.3 65.3
Level 2 | US Treasury and Government [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 3.2 3.4
Level 2 | Other securities    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 2.4 1.9
Level 3    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 0.0 0.0
Level 3 | Corporate bonds    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 0.0 0.0
Level 3 | US Treasury and Government [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 0.0 0.0
Level 3 | Other securities    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets 0.0 0.0
Fair Value Measured at Net Asset Value Per Share | Private Equity Funds [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined benefit plan, assets $ 18.4 $ 16.2