Intangible Assets, net - Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense related to intangible assets included in depreciation and amortization expense	$ 3.8	$ 3.8	$ 11.4	$ 11.4