Intangible Assets, Net And Goodwill (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Indefinite-lived Intangible Assets [Line Items]
Amortization expense on intangible assets	$ 13.7	$ 15.8
Future amortization expense, 2017 remaining nine months	44.7
Future amortization expense, 2018	58.5
Future amortization expense, 2019	58.5
Future amortization expense, 2020	58.5
Future amortization expense, 2021	$ 58.1