MARKETING AGREEMENT - Additional Information (Details) $ in Millions		6 Months Ended
	May 15, 2015 USD ($)	Mar. 31, 2018 USD ($)	Aug. 31, 2017 USD ($)	Sep. 30, 1998 USD ($)
Monsanto Marketing Agreement
Marketing Agreement [Line Items]
Initial consideration for marketing rights				$ 32.0
Useful life of Marketing Agreement		20 years
Remaining unamortized amount		$ 0.4
Remaining amortization period of Marketing Agreement		1 year
Consideration paid	$ 300.0
Restated Marketing Agreement
Marketing Agreement [Line Items]
Percentage of program earnings	50.00%
Commission threshold	$ 40.0
Annual contribution payment	18.0
Minimum termination fee payable	$ 175.0
Minimum termination fee payable multiple	4
Minimum termination fee payable threshold	$ 186.4
International Business | Amended Original Marketing Agreement
Marketing Agreement [Line Items]
Carrying amount of intangible assets disposed of			$ 32.6