FINANCIAL INSTRUMENTS, FAIR VALUE AND RISK MANAGEMENT - Summary of Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions	Jan. 31, 2017	Oct. 31, 2016	Jan. 31, 2016	Jan. 29, 2016
Assets measured at fair value
Available-for-sale securities	$ 1.4	$ 1.4
Held-for-trading securities	1.4	1.4
Total assets	3.8	2.8
Liabilities measured at fair value
Earnout liability	37.4	33.8	$ 31.1	$ 36.0
Total liabilities	37.4	36.5
Foreign exchange forward contracts
Assets measured at fair value
Foreign exchange forward contracts	1.0	0.0
Liabilities measured at fair value
Foreign exchange forward contracts	0.0	2.7
Level 1
Assets measured at fair value
Available-for-sale securities	1.4	1.4
Held-for-trading securities	0.0	0.0
Total assets	1.4	1.4
Liabilities measured at fair value
Earnout liability	0.0	0.0
Total liabilities	0.0	0.0
Level 1 | Foreign exchange forward contracts
Assets measured at fair value
Foreign exchange forward contracts	0.0	0.0
Liabilities measured at fair value
Foreign exchange forward contracts	0.0	0.0
Level 2
Assets measured at fair value
Available-for-sale securities	0.0	0.0
Held-for-trading securities	1.4	1.4
Total assets	2.4	1.4
Liabilities measured at fair value
Earnout liability	0.0	0.0
Total liabilities	0.0	2.7
Level 2 | Foreign exchange forward contracts
Assets measured at fair value
Foreign exchange forward contracts	1.0	0.0
Liabilities measured at fair value
Foreign exchange forward contracts	0.0	2.7
Level 3
Assets measured at fair value
Available-for-sale securities	0.0	0.0
Held-for-trading securities	0.0	0.0
Total assets	0.0	0.0
Liabilities measured at fair value
Earnout liability	37.4	33.8
Total liabilities	37.4	33.8
Level 3 | Foreign exchange forward contracts
Assets measured at fair value
Foreign exchange forward contracts	0.0	0.0
Liabilities measured at fair value
Foreign exchange forward contracts	$ 0.0	$ 0.0