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Summary Of Significant Accounting Policies (Tables)
12 Months Ended
Jul. 27, 2013
Accounting Policies [Abstract]  
Depreciation Period By Type Of Assets
Depreciation and amortization are computed using the straight-line method, generally over the following periods:
 
Asset Category
 
Period
Buildings
 
25 years
Building improvements
 
10 years
Furniture and fixtures
 
5 years
Leasehold improvements
 
Shorter of remaining lease term or 5 years
Computer equipment and related software
 
30 to 36 months
Production, engineering, and other equipment
 
Up to 5 years
Operating lease assets
 
Based on lease term generally up to 3 years