Pensions and Postretirement Benefits - Summary of Pension Plan Asset Allocation By Level (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	$ 156.1	$ 147.9
Common stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	30.6	22.3
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	51.7	58.3
Foreign stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	4.7	4.7
U.S. Government obligations
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	9.0	9.2
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	7.0	3.0
Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	11.5	11.7
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	6.4	6.5
Common collective trusts
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	4.6	11.4
Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	33.7	24.2
Postretirement benefit assets
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	(3.1)	(3.4)
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	120.9	115.7
Level 1 | Common stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	30.6	22.3
Level 1 | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	51.7	58.3
Level 1 | Foreign stock
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	4.7	4.7
Level 1 | U.S. Government obligations
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	9.0	9.2
Level 1 | Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	7.0	3.0
Level 1 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	11.5	11.7
Level 1 | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	$ 6.4	$ 6.5