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Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Tax Examination [Line Items]        
Notional interest deduction ("NID") $ 40.0 $ 46.3 $ 40.0  
State charitable contribution carryover ("SCCCs") 0.7 0.6 0.7  
Accrued income taxes   1.4    
Unrecognized tax benefits 4.5 2.1 4.5  
Income tax penalties and interest expense, benefit   0.7 4.0  
Accrued interest and penalties 1.0 0.3 1.0  
Tax benefit       $ 14.7
Tax liability       37.8
Income tax provision 4.8 (118.6) (103.4) $ (119.0)
Income taxes receivable, current 24.8   24.8  
Tax deposit 7.6 10.7 7.6  
Deferred tax assets 21.6   21.6  
Income taxes receivable, noncurrent $ 30.1 31.1 30.1  
US State        
Income Tax Examination [Line Items]        
Operating loss carryforwards, valuation allowance   43.2    
Foreign        
Income Tax Examination [Line Items]        
Operating loss carryforwards, valuation allowance   $ 26.5    
Danish Tax Authority (SKAT)        
Income Tax Examination [Line Items]        
Income tax benefit, net     8.9  
Income tax benefit, gross     10.5  
Overpayment of interest     $ 1.6