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Income Taxes (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2017
Increase (decrease) in deferred tax asset valuation allowance   $ 0.6 $ (30.6)    
Valuation Allowance, Deferred Tax Asset, Explanation of Change federal net deferred taxes that are more likely than not to be realized        
Operating Loss Carryforwards         $ 649.1
Operating Loss Carryforwards, No Expiration $ 131.4 131.4      
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount   0.6 71.3 $ 13.9  
Provision (benefit) for income taxes   (15.6) 39.1 1.4  
Liability for Uncertain Tax Positions, Noncurrent 1.9 1.9 1.0 $ 0.8  
Unrecognized Tax Benefits, Income Tax Penalties Expense Reduction   (0.9) (0.2)    
Income Tax Examination, Penalties and Interest Accrued 0.1 $ 0.1 $ 0.1    
Federal Statutory Income Tax Rate, Percent   21.00% 21.00% 21.00%  
Deferred Tax Assets, Valuation Allowance 414.1 $ 414.1 $ 414.7    
State and Local Jurisdiction [Member]          
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent   2.00% 1.00% (1.00%)  
Operating Loss Carryforwards, Valuation Allowance $ 479.2 $ 479.2      
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount       $ 2.0