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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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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 Category |  | Period
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 assets |  | Based on lease term
Furniture and fixtures |  | 5 years
Property and Equipment, Net
|  | July 31, 2021 |  | July 25, 2020
Gross property and equipment: |  |  |  |
Land, buildings, and building and leasehold improvements |  | $ | 4,304 |  |  | $ | 4,252 |
Computer equipment and related software |  | 858 |  |  | 875 |
Production, engineering, and other equipment |  | 5,106 |  |  | 5,163 |
Operating lease assets |  | 273 |  |  | 337 |
Furniture, fixtures and other |  | 377 |  |  | 387 |
Total gross property and equipment |  | 10,918 |  |  | 11,014 |
Less: accumulated depreciation and amortization |  | (8,580) |  |  | (8,561) |
Total |  | $ | 2,338 |  |  | $ | 2,453 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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