Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Aug. 01, 2014	Jul. 31, 2015	Aug. 01, 2014
Income Taxes [Line Items]
Income tax rate	17.40%	23.70%	19.90%	21.50%
Discrete tax expense (benefits)	$ (0.9)	$ 0.2	$ (0.1)	$ (0.9)
Change in unrecognized tax benefit within the next twelve months	0.9		0.9
Related to reconciling the prior year’s income tax return to the income tax provision
Income Taxes [Line Items]
Discrete tax benefits due to release of reserves for uncertain tax positions	1.2		1.2	0.7
Discrete tax expense due to reconciliation of income tax return	$ 0.3		2.6	0.3
Due to the retroactive extension of the U.S. federal research and experimentation credits
Income Taxes [Line Items]
Discrete tax benefit due to a change in Tax Laws			$ 1.5
As a result of the enactment of tax laws reducing the U.K. statutory income tax rate
Income Taxes [Line Items]
Discrete tax benefit due to a change in Tax Laws				$ 0.5