Financial Instruments, Fair Value and Risk Management - Foreign Exchange Contracts and Other Arrangements Narrative (Details) $ in Millions		3 Months Ended		9 Months Ended
	Jan. 29, 2016 USD ($) tranche	Jul. 31, 2016 USD ($) CAD / $	Jan. 31, 2016 USD ($)	Jul. 31, 2016 USD ($) CAD / $	Oct. 31, 2015 USD ($)
Derivatives, Fair Value [Line Items]
Contingent consideration	$ 36.0	$ 38.7	$ 31.1	$ 38.7	$ 0.0
Capital transaction	36.0			$ 87.0
Adjusted EBITDA growth rate (as percent)				10.00%
Maximum payment under Earnout Agreement	60.0
Minimum payment under Earnout Agreement	$ 25.0
Income recognized from change in fair value in earnout liability		6.4	$ 4.9	$ 7.6
Number of tranches | tranche	3
Level 3
Derivatives, Fair Value [Line Items]
Contingent consideration		38.7		$ 38.7	$ 0.0
Asset volatility rate (as percent)				30.00%
Asset beta				1.0
Change in asset volatility (as percent)				1.00%
Change in liability amount due to asset volatility change				$ 0.3
Change in asset beta				0.1
Change in liability amount due to asset beta change				$ 0.5
Tranche one
Derivatives, Fair Value [Line Items]
Consideration transferred	$ 25.0
Tranche two
Derivatives, Fair Value [Line Items]
Contingent consideration	25.0
Adjusted EBITDA value	98.0
Tranche three
Derivatives, Fair Value [Line Items]
Contingent consideration	10.0
Adjusted EBITDA value	$ 110.0
Earnout Agreement [Member]
Derivatives, Fair Value [Line Items]
Earnout fair value		$ 38.7		$ 38.7
Designated as hedging instruments | Foreign Exchange Forward Issued April 30, 2016 | Canada
Derivatives, Fair Value [Line Items]
Average exchange rate | CAD / $		1.2837		1.2837
Unrealized loss recorded in accumulated other comprehensive income in shareholders' deficit, net of associated income tax		$ 1.4
Designated as hedging instruments | Foreign Exchange Forward Issued April 30, 2016 | Canada | Short
Derivatives, Fair Value [Line Items]
Aggregate amount to sell		$ 94.2		$ 94.2