Segment Information - Reconciliation of Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Segment Reporting [Abstract]
Total Adjusted EBITDA	$ 113.7	$ 104.2	$ 270.7	$ 268.5
Depreciation and amortization	(28.1)	(26.6)	(81.5)	(79.3)
Repositioning expenses	(0.4)	(3.1)	(2.9)	(21.3)
Acquisition and integration costs	(2.4)	(6.1)	(12.6)	(18.4)
Interest expense, net	(43.1)	(42.3)	(129.5)	(98.9)
Impairment charge	(0.1)	(3.2)	(0.1)	(3.2)
Provision for income taxes	(0.3)	(9.9)	(0.3)	(19.8)
Refinancing expenses	0.0	0.0	0.0	(3.7)
Operational initiatives related consulting costs	(0.5)	(2.9)	(3.9)	(8.9)
Pre-IPO public company costs	(0.4)	(0.2)	(1.2)	(2.4)
Acquisition-related litigation expenses	(1.1)	(5.6)	(3.0)	(7.8)
Stock-based compensation expense	(13.2)	(3.5)	(16.2)	(11.3)
Remediation costs	(8.9)	0.0	(27.4)	0.0
Other	(6.4)	0.4	(1.4)	0.6
Net income (loss) from continuing operations	$ 8.8	$ 1.2	$ (9.3)	$ (5.9)