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Discontinued Operations (Details) (USD $)
9 Months Ended 12 Months Ended
Aug. 04, 2012
Jul. 30, 2011
Oct. 29, 2011
Nov. 01, 2008
Oct. 30, 2010
Baseband Chipset Business [Member]
Oct. 31, 2009
Baseband Chipset Business [Member]
Oct. 29, 2011
Baseband Chipset Business [Member]
The following amounts related to the Baseband Chipset Business have been segregated from continuing operations and reported as discontinued operations [Abstract]              
Gain on sale of discontinued operations before income taxes   $ 10,000,000          
Provision for income taxes   3,500,000          
Gain on sale of discontinued operations, net of tax 0 6,500,000 6,500,000        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Additional cash payments related to sale of business           1,700,000  
Cash refund of foreign withholding tax         62,000,000    
Additional pre-tax gain on sale         300,000    
Additional gain on sale, net of tax         200,000    
Additional proceeds the company may receive, currently held in escrow             10,000,000
Discontinued Operations (Textual) [Abstract]              
Refundable foreign withholding tax       $ 269,000,000