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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Jul. 31, 2021
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 CategoryPeriod
Buildings
25 years
Building improvements
10 years
Leasehold improvements
Shorter of remaining lease term or up to 10 years
Computer equipment and related software
30 to 36 months
Production, engineering, and other equipment
Up to 5 years
Operating lease assetsBased on lease term
Furniture and fixtures
5 years
Property and Equipment, Net
July 31, 2021July 25, 2020
Gross property and equipment:
Land, buildings, and building and leasehold improvements$4,304 $4,252 
Computer equipment and related software858 875 
Production, engineering, and other equipment5,106 5,163 
Operating lease assets273 337 
Furniture, fixtures and other377 387 
Total gross property and equipment10,918 11,014 
Less: accumulated depreciation and amortization(8,580)(8,561)
Total$2,338 $2,453