Stockholders' Equity - Non-Controlling Interest (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Class of Stock [Line Items]
Total number of shares of common stock originally issuable upon the exchange of PDH common stock pursuant to the RHSA (in shares)			8.8
PDH
Class of Stock [Line Items]
Rate PDH common stock that may be exchanged for shares of common stock			25.00%
Period during which PDH Common stock that may be exchanged for shares of common stock			4 years
Common stock issued in connection with exchange of PDH common stock (in shares)	3.7		3.7
Mac Dermid
Class of Stock [Line Items]
Equity instruments	$ 97.5		$ 97.5
Noncontrolling interest percentage (as a percent)	4.02%	6.20%	4.02%	6.20%
Net income (loss) allocated to Retaining Holders	$ 0.7	$ (1.5)	$ 2.6	$ (4.2)