Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense of intangible assets	$ 3.5	$ 3.6	$ 6.9	$ 7.2
Finite-Lived Intangible Assets, Amortization Expense, Next Rolling Twelve Months	6.7		6.7
Finite-Lived Intangible Assets, Amortization Expense, Year Two	12.9		12.9
Finite-Lived Intangible Assets, Amortization Expense, Year Three	12.2		12.2
Finite-Lived Intangible Assets, Amortization Expense, Year Four	11.4		11.4
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 10.7		$ 10.7