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Financing Receivables - Schedule of Financing Receivables Categorized by Internal Credit Risk Rating (Details) - USD ($) $ in Millions | Jul. 31, 2021 | Jul. 25, 2020
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | $ 8 |
Origination year - Fiscal Year 2017 | 190 |
Origination year - Fiscal Year 2018 | 437 |
Origination year - Fiscal Year 2019 | 1,413 |
Origination year - Fiscal Year 2020 | 2,689 |
Origination year - Fiscal Year 2021 | 4,551 |
Total | 9,288 | $ 10,780
1 to 4 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total |  | 6,445
5 to 6 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total |  | 4,066
7 and Higher |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total |  | 269
Lease receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 3 |
Origination year - Fiscal Year 2017 | 39 |
Origination year - Fiscal Year 2018 | 171 |
Origination year - Fiscal Year 2019 | 367 |
Origination year - Fiscal Year 2020 | 590 |
Origination year - Fiscal Year 2021 | 462 |
Total | 1,632 | 2,013
Lease receivables | 1 to 4 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 2 |
Origination year - Fiscal Year 2017 | 20 |
Origination year - Fiscal Year 2018 | 100 |
Origination year - Fiscal Year 2019 | 168 |
Origination year - Fiscal Year 2020 | 282 |
Origination year - Fiscal Year 2021 | 227 |
Total | 799 | 992
Lease receivables | 5 to 6 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 1 |
Origination year - Fiscal Year 2017 | 17 |
Origination year - Fiscal Year 2018 | 65 |
Origination year - Fiscal Year 2019 | 187 |
Origination year - Fiscal Year 2020 | 285 |
Origination year - Fiscal Year 2021 | 231 |
Total | 786 | 952
Lease receivables | 7 and Higher |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 0 |
Origination year - Fiscal Year 2017 | 2 |
Origination year - Fiscal Year 2018 | 6 |
Origination year - Fiscal Year 2019 | 12 |
Origination year - Fiscal Year 2020 | 23 |
Origination year - Fiscal Year 2021 | 4 |
Total | 47 | 69
Loan receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 5 |
Origination year - Fiscal Year 2017 | 107 |
Origination year - Fiscal Year 2018 | 213 |
Origination year - Fiscal Year 2019 | 829 |
Origination year - Fiscal Year 2020 | 1,538 |
Origination year - Fiscal Year 2021 | 2,511 |
Total | 5,203 | 5,937
Loan receivables | 1 to 4 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 4 |
Origination year - Fiscal Year 2017 | 86 |
Origination year - Fiscal Year 2018 | 134 |
Origination year - Fiscal Year 2019 | 577 |
Origination year - Fiscal Year 2020 | 990 |
Origination year - Fiscal Year 2021 | 1,552 |
Total | 3,343 | 3,808
Loan receivables | 5 to 6 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 0 |
Origination year - Fiscal Year 2017 | 19 |
Origination year - Fiscal Year 2018 | 75 |
Origination year - Fiscal Year 2019 | 202 |
Origination year - Fiscal Year 2020 | 505 |
Origination year - Fiscal Year 2021 | 925 |
Total | 1,726 | 1,961
Loan receivables | 7 and Higher |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 1 |
Origination year - Fiscal Year 2017 | 2 |
Origination year - Fiscal Year 2018 | 4 |
Origination year - Fiscal Year 2019 | 50 |
Origination year - Fiscal Year 2020 | 43 |
Origination year - Fiscal Year 2021 | 34 |
Total | 134 | 168
Financed service contracts |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 0 |
Origination year - Fiscal Year 2017 | 44 |
Origination year - Fiscal Year 2018 | 53 |
Origination year - Fiscal Year 2019 | 217 |
Origination year - Fiscal Year 2020 | 561 |
Origination year - Fiscal Year 2021 | 1,578 |
Total | 2,453 | 2,830
Financed service contracts | 1 to 4 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 0 |
Origination year - Fiscal Year 2017 | 38 |
Origination year - Fiscal Year 2018 | 26 |
Origination year - Fiscal Year 2019 | 106 |
Origination year - Fiscal Year 2020 | 252 |
Origination year - Fiscal Year 2021 | 1,053 |
Total | 1,475 | 1,645
Financed service contracts | 5 to 6 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 0 |
Origination year - Fiscal Year 2017 | 6 |
Origination year - Fiscal Year 2018 | 26 |
Origination year - Fiscal Year 2019 | 105 |
Origination year - Fiscal Year 2020 | 302 |
Origination year - Fiscal Year 2021 | 520 |
Total | 959 | 1,153
Financed service contracts | 7 and Higher |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 0 |
Origination year - Fiscal Year 2017 | 0 |
Origination year - Fiscal Year 2018 | 1 |
Origination year - Fiscal Year 2019 | 6 |
Origination year - Fiscal Year 2020 | 7 |
Origination year - Fiscal Year 2021 | 5 |
Total | $ 19 | $ 32

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