Other Intangible Assets, Net - Future Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 15.1	$ 15.2	$ 16.8
Expected future amortization of intangible assets
2016	14.6
2017	7.2
2018	5.3
2019	5.2
2020	5.2
2021 and Thereafter	38.4
Acquired Intangible Assets, Net	$ 75.9	$ 91.0