Basis of Presentation and Summary of Significant Accounting and Financial Reporting Policies (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) segment	Sep. 30, 2018 USD ($)	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jul. 03, 2017 USD ($)
Class of Stock [Line Items]
Number of operating segments | segment			2
Operating lease right-of-use assets	$ 34.0		$ 34.0			$ 0.0
Operating lease obligations	34.3		34.3
ASU 2016-02 - Topic 842
Class of Stock [Line Items]
Operating lease right-of-use assets					$ 40.8
Operating lease obligations					$ 40.9
Other income, net
Class of Stock [Line Items]
Net foreign currency transaction and remeasurement losses	0.0	$ 0.7	0.0	$ 1.4
Loss recognized related to remeasurement of assets	$ 0.6	$ 1.1	$ 0.9	$ 1.1
Disposed of by Sale | Darex
Class of Stock [Line Items]
Consideration received							$ 1,060.0