DISCONTINUED OPERATIONS - Schedule of Dispositions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss	$ 0.0	$ (1.0)	$ 0.0	$ (3.1)
DPx Fine Chemicals | Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		0.0		2.1
Cost of goods sold		0.0		1.9
Gross profit		0.0		0.2
Selling, general and administrative expenses		0.0		0.4
Loss on disposals, net		0.9		2.8
Operating loss		(0.9)		(3.0)
Foreign exchange income, net		(0.1)		(0.1)
Loss before income taxes		(0.8)		(2.9)
Provision for income taxes		0.2		0.2
Net loss		$ (1.0)		$ (3.1)