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Income Taxes (Narratives) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]      
U.S. federal statutory tax rate 21.00% 21.00% 21.00%
Deferred Tax Assets, Operating Loss Carryforwards, Domestic $ 0.5    
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 1.6    
Retained earnings 1,200.0 $ 1,174.4  
Gross deferred tax assets 59.3 71.7  
Gross deferred tax liabilities 187.6 160.4  
Unrecognized Tax Benefits 1.4 $ 1.3  
Deferred Tax Assets, Valuation Allowance, Operating Loss Carryforward      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Deferred Tax Assets, Valuation Allowance 0.9    
Foreign [Member]      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Retained earnings $ 16.2