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v3.22.2.2

Income Taxes - Change in Valuation Allowance for Deferred Tax Assets (Details) - Deferred tax asset valuation allowance - USD ($) $ in Millions | 12 Months Ended
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Jul. 30, 2022 | Jul. 31, 2021 | Jul. 25, 2020
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of fiscal year | $ 771 | $ 700 | $ 457
Additions | 84 | 91 | 279
Deductions | (10) | (5) | (29)
Write-offs | (12) | (16) | (7)
Foreign exchange and other | 1 | 1 | 0
Balance at end of fiscal year | $ 834 | $ 771 | $ 700

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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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