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Employee Retirement Plans - Narrative (Details) - USD ($)
$ in Millions
9 Months Ended 12 Months Ended
Mar. 20, 2018
Sep. 30, 2018
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Defined Contribution Plan Disclosure [Line Items]              
Contribution made   $ 2.6          
Contribution made, fixed contributions   1.5          
Contribution made, profit related contributions   1.1          
Expected contributions   1.6          
Expected contributions, fixed contributions   1.2          
Expected contributions, profit related contributions   $ 0.4          
GMSL              
Defined Contribution Plan Disclosure [Line Items]              
Deferred contribution $ 13.1            
Percent of operating profit 10.00%            
Years in arrears 2 years            
Variable contribution, percent of dividends 50.00%            
GMSL | Scenario, Forecast              
Defined Contribution Plan Disclosure [Line Items]              
Fixed contributions     $ 3.1 $ 7.2 $ 7.1 $ 6.8 $ 2.7