Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense of intangible assets	$ 2.9	$ 3.1
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	8.5
Finite-Lived Intangible Assets, Amortization Expense, Year Two	10.7
Finite-Lived Intangible Assets, Amortization Expense, Year Three	10.1
Finite-Lived Intangible Assets, Amortization Expense, Year Four	9.2
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 8.0