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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Jul. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation And Qualifying Accounts
SCHEDULE II
VALUATION AND QUALIFYING ACCOUNTS
(in millions)

July 31, 2021July 25, 2020July 27, 2019
Allowance for Accounts Receivable:
Balance at beginning of fiscal year$143 $136 $129 
Provisions (benefits)21 55 56 
Recoveries (write-offs), net(29)(48)(50)
Foreign exchange and other(26)— 1 
Balance at end of fiscal year$109 $143 $136 
Allowance for Financing Receivables:
Balance at beginning of fiscal year$138 $126 $205 
Provisions (benefits)(27)38 (16)
Recoveries (write-offs), net(2)(22)(42)
Foreign exchange and other18 (4)(21)
Balance at end of fiscal year$127 $138 $126 
Deferred Tax Asset Valuation Allowance:
Balance at beginning of fiscal year$700 $457 $374 
Additions91 279 112 
Deductions(5)(29)(20)
Write-offs(16)(7)(8)
Foreign exchange and other1 — (1)
Balance at end of fiscal year$771 $700 $457