Investments (Detail) (USD $) In Millions, unless otherwise specified	Nov. 01, 2014	Nov. 02, 2013
Schedule of Available-for-sale Securities [Line Items]
Cost	$ 23.7		[1]
Fair Value	23.5		[1]
US Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Cost	9.7		[1]
Fair Value	9.6		[1]
US government agency securities
Schedule of Available-for-sale Securities [Line Items]
Cost	1.4		[1]
Fair Value	1.3		[1]
Corporate bonds and notes
Schedule of Available-for-sale Securities [Line Items]
Cost	9.3		[1]
Fair Value	9.3		[1]
Corporate equity securities
Schedule of Available-for-sale Securities [Line Items]
Cost	3.3		[1]
Fair Value	$ 3.3		[1]

[1] Not applicable as all investments were acquired as part of the Acquisition that occurred during Fiscal 2015.