SEGMENT INFORMATION - Reconciliation of Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Segment Reporting Information [Line Items]
Total Adjusted EBITDA	$ 94.2	$ 98.0	$ 176.7	$ 157.0
Depreciation and amortization	(34.3)	(27.0)	(61.9)	(53.5)
Repositioning expenses	(2.2)	(1.3)	(3.5)	(2.5)
Acquisition and integration costs	(8.1)	(7.6)	(11.6)	(10.2)
Interest expense, net	(30.8)	(42.6)	(59.0)	(86.4)
Benefit from (provision for) income taxes	1.5	(0.7)	22.8	0.0
Refinancing expenses	(6.3)	0.0	(6.3)	0.0
Operational initiatives related consulting costs	(1.4)	(1.9)	(2.5)	(3.3)
IPO costs	0.0	(0.4)	0.0	(0.8)
Acquisition related litigation expenses	(3.7)	(0.9)	(6.0)	(1.9)
Stock based compensation expense	(7.0)	(2.0)	(11.0)	(3.0)
FDA remediation costs	0.0	(10.1)	0.0	(18.5)
Environmental remediation costs	0.0	0.0	(3.7)	0.0
Bargain purchase gain	26.4	0.0	26.4	0.0
Other	(0.7)	(1.6)	(4.5)	5.0
Net income (loss) from continuing operations	27.6	$ 1.9	55.9	$ (18.1)
Swindon Wind Down
Segment Reporting Information [Line Items]
Inventory Write-down	$ 0.4		$ 1.1