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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jul. 27, 2019 | Jul. 28, 2018 | Jul. 29, 2017
Financing Receivables |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of fiscal year | $ 205 | $ 295 | $ 375
Provisions (benefits) | (16) | (89) | (35)
Recoveries (write-offs), net | (42) | (6) | (49)
Foreign exchange and other | (21) | 5 | 4
Balance at end of fiscal year | 126 | 205 | 295
Accounts Receivable |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of fiscal year | 129 | 211 | 249
Provisions (benefits) | 56 | (45) | 27
Recoveries (write-offs), net | (50) | (37) | (61)
Foreign exchange and other | 1 | 0 | (4)
Balance at end of fiscal year | $ 136 | $ 129 | $ 211

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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 http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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