Intangible Assets, Net and Goodwill (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 on intangible assets	$ 14.5	$ 15.6	$ 28.2	$ 31.4
Future amortization expense, 2017 remaining nine months	30.1		30.1
Future amortization expense, 2018	58.5		58.5
Future amortization expense, 2019	58.5		58.5
Future amortization expense, 2020	58.5		58.5
Future amortization expense, 2021	$ 58.1		$ 58.1