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Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense of intangible assets $ 3.1 $ 3.3
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 9.1  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 11.4  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 10.7  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 10.1  
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 9.2