Commitments, Contingencies and Guarantees - Additional Information (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) T	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Mar. 08, 2018 USD ($)	May 01, 2017 USD ($)
Commitments And Contingencies Disclosure [Line Items]
Rent expense		$ 24.5	$ 24.5	$ 18.8
Interest expense associated with financing lease		3.8
Depreciation expense associated with financing lease		$ 2.5
Annual purchase commitment, in tons | T		240,000
Commitments		$ 262.5
Outstanding guarantees and letters of credit		5.2
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	17.8
Payment year of achieving certain operating performance		2019
Increased and decreased estimate of contingent consideration liability		$ (7.5)
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
Maximum | Agro Bio Sciences Inc
Commitments And Contingencies Disclosure [Line Items]
Payment to be made if certain operating performance is achieved		$ 25.0				$ 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			$ 25.0
Updated Sales Forecasts | Agro Bio Sciences Inc
Commitments And Contingencies Disclosure [Line Items]
Payment to be made if certain operating performance is achieved	23.2	15.7	$ 23.2
Updated Sales Forecasts | Selling, General and Administrative Expenses | Specialty Products | Agro Bio Sciences Inc
Commitments And Contingencies Disclosure [Line Items]
Increased and decreased estimate of contingent consideration liability	$ 5.4	$ (7.5)