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Revolving Credit Facility (Details) (USD $)
9 Months Ended 12 Months Ended
Jul. 30, 2011
Nov. 01, 2008
May 31, 2008
Revolving Credit Facility (Textuals) [Abstract]      
Cash and cash equivalents and short-term investments $ 3,514,500,000    
Cash and cash equivalents and short-term investments held in United States 1,167,500,000    
Unsecured revolving credit facility term in years   5 years  
Unsecured revolving credit facility     165,000,000
Line of credit facility, amount outstanding $ 0    
Covenant terms, line of credit The terms of this facility also include financial covenants that require the Company to maintain a minimum interest coverage ratio and not exceed a maximum leverage ratio.    
Line of credit facility, covenant compliance The Company is compliant with these covenants.