Retirement Plans and Other Postretirement Benefits - Fair Value of Plan Assets (Details) - Defined Benefit Plan - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	$ 13.6	$ 19.8	$ 22.0	$ 23.2
Equity security funds, United States
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	3.3	3.8
Equity security funds, International
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	3.3	3.3
Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	6.5	12.4
Short-term investment funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.5	0.3
Level 1
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.5	0.3
Level 1 | Equity security funds, United States
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.0	0.0
Level 1 | Equity security funds, International
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.0	0.0
Level 1 | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.0	0.0
Level 1 | Short-term investment funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.5	0.3
Level 2
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	13.1	19.5
Level 2 | Equity security funds, United States
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	3.3	3.8
Level 2 | Equity security funds, International
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	3.3	3.3
Level 2 | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	6.5	12.4
Level 2 | Short-term investment funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.0	0.0
Level 3
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.0	0.0
Level 3 | Equity security funds, United States
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.0	0.0
Level 3 | Equity security funds, International
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.0	0.0
Level 3 | Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	0.0	0.0
Level 3 | Short-term investment funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets amount	$ 0.0	$ 0.0