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Segment Information and Major Customers - Long-lived Assets by Geographic Areas (Details) - USD ($) $ in Millions | Jul. 31, 2021 | Jul. 25, 2020 | Jul. 27, 2019
--- | --- | --- | ---
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Long-lived assets | $ 3,433 | $ 3,374 | $ 2,789
United States |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Long-lived assets | 2,189 | 2,328 | 2,266
International |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Long-lived assets | $ 1,244 | $ 1,046 | $ 523

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 + Details
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Balance Type: | debit
Period Type: | instant

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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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Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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