Other Intangible Assets, net - Schedule of Future Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 15.1	$ 6.1	$ 7.2
Expected future amortization of intangible assets
2020	15.7
2021	15.7
2022	15.1
2023	14.9
2024	13.1
2025 and thereafter	77.7
Acquired Intangible Assets, Net	$ 152.2	$ 166.0