Other Intangible Assets, Net - Future Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 14.6	$ 15.1	$ 15.2
Expected future amortization of intangible assets
2017	7.2
2018	5.3
2019	5.2
2020	5.2
2021	5.2
2022 and Thereafter	33.2
Acquired Intangible Assets, Net	$ 61.3	$ 75.9