SEGMENT INFORMATION - Segment Results (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Segment Reporting Information [Line Items]
Revenues	$ 457.4	$ 405.9
Adjusted EBITDA	82.5	59.0
Depreciation and amortization	27.6	26.4
Capital expenditures	59.0	64.2
Operating Segments | DPS
Segment Reporting Information [Line Items]
Revenues	275.2	258.5
Adjusted EBITDA	61.4	55.1
Depreciation and amortization	15.3	14.8
Capital expenditures	36.9	45.0
Operating Segments | PDS
Segment Reporting Information [Line Items]
Revenues	52.3	48.5
Adjusted EBITDA	16.3	13.8
Depreciation and amortization	1.8	1.2
Capital expenditures	1.4	9.7
Operating Segments | DSS
Segment Reporting Information [Line Items]
Revenues	129.9	98.9
Adjusted EBITDA	32.0	14.8
Depreciation and amortization	9.7	9.9
Capital expenditures	17.9	7.3
Other | Other
Segment Reporting Information [Line Items]
Revenues	0.0	0.0
Adjusted EBITDA	(27.2)	(24.7)
Depreciation and amortization	0.8	0.5
Capital expenditures	$ 2.8	$ 2.2