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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Tax Credit Carryforward [Line Items]        
Income tax expense (benefit)   $ (30.2) $ 26.8 $ (27.6)
Effective tax rate (percent)   38.30% (5.60%) 28.60%
Tax provision at U.S. statutory rate   21.00% 21.00% 21.00%
Tax-effected operating loss carryforwards   $ 255.6    
Capital loss carryforward   33.6 $ 47.4  
Valuation allowance on deferred tax assets   286.1 323.0  
Unrecognized tax benefits that would impact effective tax rate   10.9    
Decrease in unrecognized tax benefits due to lapse of statute of limitations   5.6 $ 2.4 $ 0.4
Forecast        
Tax Credit Carryforward [Line Items]        
Decrease in unrecognized tax benefits due to lapse of statute of limitations $ 2.6      
United States        
Tax Credit Carryforward [Line Items]        
Valuation allowance on deferred tax assets   44.0    
Luxembourg        
Tax Credit Carryforward [Line Items]        
Valuation allowance on deferred tax assets   203.5    
State        
Tax Credit Carryforward [Line Items]        
Valuation allowance on deferred tax assets   17.3    
Tax Year 2026        
Tax Credit Carryforward [Line Items]        
Capital loss carryforward   25.0    
Indefinite        
Tax Credit Carryforward [Line Items]        
Capital loss carryforward   7.8    
Tax Year 2028 - 2033 | Foreign and state jurisdiction        
Tax Credit Carryforward [Line Items]        
Capital loss carryforward   20.1    
Tax Year 2024 - 2042 | Foreign and state jurisdiction        
Tax Credit Carryforward [Line Items]        
Capital loss carryforward   9.8    
Tax Year 2026 and Indefinite        
Tax Credit Carryforward [Line Items]        
Capital loss carryforward   $ 32.8