FINANCIAL INSTRUMENTS, FAIR VALUE AND RISK MANAGEMENT - Schedule of Derivative Financial Instruments and Investments Classification on Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Jan. 31, 2017	Oct. 31, 2016
Derivatives, Fair Value [Line Items]
Available-for-sale securities	$ 1.4	$ 1.4
Held-for-trading securities	1.4	1.4
Total assets	3.8	2.8
Total liabilities	37.4	36.5
Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts (Derivative assets)	1.0	0.0
Foreign exchange forward contracts (Derivative liabilities)	0.0	2.7
Prepaid expenses and other \| Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts (Derivative assets)	1.0	0.0
Investments
Derivatives, Fair Value [Line Items]
Available-for-sale securities	1.4	1.4
Held-for-trading securities	1.4	1.4
Accounts payable and accrued liabilities \| Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Foreign exchange forward contracts (Derivative liabilities)	0.0	2.7
Other long-term liabilities
Derivatives, Fair Value [Line Items]
Earnout liability	$ 37.4	$ 33.8

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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