v3.26.1
Income Taxes (Income Tax Reconciliation and Unrecognized Tax Benefits) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Income before income taxes and equity in net income (loss) of unconsolidated entities $ 141.8 $ 108.5  
Equity in investments of unconsolidated entities (0.1) (2.6)  
Total 141.7 105.9  
Income tax expense $ 34.6 $ 27.4  
Effective income tax rate 24.40% 25.90%  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]      
Total Liability For Unrecognized Tax Benefits $ 13.9   $ 13.1
Concentration Risk [Line Items]      
Effective Income Tax Rate Reconciliation, Increase (Decrease) From Prior Year, PercentTaxes (1.50%)    
Unrecognized Tax Benefits $ 12.9   12.3
Total Liability For Unrecognized Tax Benefits $ 13.9   $ 13.1
Geographic Concentration Risk | Cash, Cash Equivalents and Investments | Total International      
Concentration Risk [Line Items]      
Percentage of cash, cash equivalents and investments held by operations outside of US 81.00%