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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
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Jul. 30, 2022 | Jul. 31, 2021 | Jul. 25, 2020
Summary Of Significant Accounting Policies [Line Items] |  |  |
Average lease term | 4 years |  |
Financing receivable, threshold period past due | 31 days |  |
Financing receivable, threshold for not accruing interest | 120 days |  |
Depreciation and amortization expenses | $ 800 | $ 800 | $ 900
Allowance for future sales returns | 43 | 55 |
Advertising costs | $ 219 | $ 268 | $ 187
Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Loan receivables and financed service contracts term | 1 year |  |
Channel partners revolving short-term financing payment term | 60 days |  |
Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Loan receivables and financed service contracts term | 3 years |  |
Channel partners revolving short-term financing payment term | 90 days |  |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 55 -Paragraph 27 -URI https://asc.fasb.org/extlink&oid=126920602&loc=SL49130611-203046-203046 + Details
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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- Definition Threshold period for when financing receivable is considered past due, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes threshold period past due to write off as uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447 + Details
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- Definition Term of lessor's sales-type lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=124258985&loc=SL77919359-209981 + Details
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