Summary Of Significant Accounting Policies (Concentration of Risk Narrative)(Details)	Oct. 27, 2012 customer	Oct. 29, 2011	Oct. 30, 2010
Accounts Receivable
Concentration Risk
Number Of Customers Included In Accounts Receivable Concentration Disclosures	3	2
Concentration Risk, Percentage	38.00%	30.00%
Accounts Receivable | Major Customer One
Concentration Risk
Concentration Risk, Percentage	16.00%	14.00%
Accounts Receivable | Major Customer Two
Concentration Risk
Concentration Risk, Percentage	12.00%	16.00%
Accounts Receivable | Major Customer Three
Concentration Risk
Concentration Risk, Percentage	10.00%
Sales Revenue, Segment
Concentration Risk
Number Of Customers Included In Revenue Concentration Disclosures	3
Concentration Risk, Percentage	47.00%	43.00%	47.00%
Sales Revenue, Segment | EMC Corporation
Concentration Risk
Concentration Risk, Percentage	16.00%	15.00%	16.00%
Sales Revenue, Segment | Hewlett Packard Corporation
Concentration Risk
Concentration Risk, Percentage	13.00%	13.00%	14.00%
Sales Revenue, Segment | International Business Machines Corporation
Concentration Risk
Concentration Risk, Percentage	18.00%	15.00%	17.00%