Stockholders' Equity - Issuance of Common Stock in Connection with Acquisitions (Details) - USD ($) $ in Millions				12 Months Ended
	Dec. 02, 2015	Nov. 03, 2014	Oct. 01, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Other income (expense), net				$ 100.8	$ 30.4	$ (0.2)
Alent
Business Acquisition [Line Items]
Issuance of common shares in connection with acquisition (in shares)	18,419,738
Agriphar
Business Acquisition [Line Items]
Issuance of common shares in connection with acquisition (in shares)			711,551
Put option period			6 months
Other income (expense), net					$ 3.0
Chemtura
Business Acquisition [Line Items]
Issuance of common shares in connection with acquisition (in shares)		2,000,000