Commitments, Contingencies and Guarantees - Additional Information (Details) $ in Millions			3 Months Ended	6 Months Ended
	Mar. 08, 2018 USD ($)	May 01, 2017 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2018 USD ($) T
Commitments And Contingencies Disclosure [Line Items]
Annual purchase commitment, in tons | T				240,000
Commitments				$ 246.1
Outstanding guarantees and letters of credit				5.5
Estimated minimum compensatory punitive damages				$ 20.0
Agro Bio Sciences Inc
Commitments And Contingencies Disclosure [Line Items]
Payment to be made if certain operating performance is achieved		$ 17.8	$ 17.8
Payment year of achieving certain operating performance		2019
Remeasurement period for liability assessed at each end of balance sheet		3 years
Passport Food Safety Solutions, Inc.
Commitments And Contingencies Disclosure [Line Items]
Payment to be made if certain operating performance is achieved	$ 7.3
Payment year of achieving certain operating performance	2020
Remeasurement date for liability assessed at each end of balance sheet date	Dec. 31, 2020
Maximum | Agro Bio Sciences Inc
Commitments And Contingencies Disclosure [Line Items]
Payment to be made if certain operating performance is achieved		$ 25.0
Maximum | Passport Food Safety Solutions, Inc.
Commitments And Contingencies Disclosure [Line Items]
Payment to be made if certain operating performance is achieved	$ 25.0
Updated Financial Performance Forecasts | Agro Bio Sciences Inc
Commitments And Contingencies Disclosure [Line Items]
Payment to be made if certain operating performance is achieved			23.2
Updated Financial Performance Forecasts | Selling, General and Administrative Expenses | Specialty Products | Agro Bio Sciences Inc
Commitments And Contingencies Disclosure [Line Items]
Increased estimate of contingent consideration liability			$ 5.4