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Financing Receivables - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jul. 31, 2021 | Jul. 25, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average lease term | 4 years |
Loan receivables term | 3 years |
Financing receivable, threshold period past due | 31 days |
Financing receivable, 120 days plus past due but on accrual status | $ 8 | $ 67
Minimum |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financed service contracts term | 1 year |
Maximum |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan receivables term | 3 years |
Financed service contracts term | 3 years |

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- Definition Financing Receivable, 120 Days or More Past Due, Still Accruing + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Service Agreement Term + References No definition available. + Details
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- Definition Term of loan receivable arrangement. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + 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 http://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 http://asc.fasb.org/extlink&oid=124258985&loc=SL77919359-209981 + Details
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Period Type: | instant

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- Details
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- Details
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