Commitments and Contingencies (Details) - USD ($) $ in Millions	1 Months Ended
	Aug. 31, 2015	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Build-to-Suit Lease
Operating Leased Assets [Line Items]
Term of leasing contract	15 years
Other long term liabilities | Build-to-Suit Lease
Operating Leased Assets [Line Items]
Financing obligation		$ 24.7	$ 14.0	$ 13.7
Other current liabilities | Build-to-Suit Lease
Operating Leased Assets [Line Items]
Financing obligation		1.4	$ 0.9	$ 1.3
Plant Nutrient | 2015 Legal Claim
Operating Leased Assets [Line Items]
Loss contingency liability		$ 2.2