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Financing Receivables - Schedule of Financing Receivables Categorized by Internal Credit Risk Rating (Details) - USD ($) $ in Millions | Jan. 29, 2022 | Jul. 31, 2021
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | $ 39 | $ 8
Origination year - Fiscal Year 2018/2017 | 233 | 190
Origination year - Fiscal Year 2019/2018 | 735 | 437
Origination year - Fiscal Year 2020/2019 | 1,804 | 1,413
Origination year - Fiscal Year 2021/2020 | 3,363 | 2,689
Origination year - Fiscal Year 2022/2021 | 1,856 | 4,551
Gross | 8,030 | 9,288
Lease Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 13 | 3
Origination year - Fiscal Year 2018/2017 | 81 | 39
Origination year - Fiscal Year 2019/2018 | 215 | 171
Origination year - Fiscal Year 2020/2019 | 385 | 367
Origination year - Fiscal Year 2021/2020 | 413 | 590
Origination year - Fiscal Year 2022/2021 | 193 | 462
Gross | 1,300 | 1,632
Loan Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 23 | 5
Origination year - Fiscal Year 2018/2017 | 121 | 107
Origination year - Fiscal Year 2019/2018 | 376 | 213
Origination year - Fiscal Year 2020/2019 | 1,060 | 829
Origination year - Fiscal Year 2021/2020 | 1,870 | 1,538
Origination year - Fiscal Year 2022/2021 | 1,131 | 2,511
Gross | 4,581 | 5,203
Financed Service Contracts |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 3 | 0
Origination year - Fiscal Year 2018/2017 | 31 | 44
Origination year - Fiscal Year 2019/2018 | 144 | 53
Origination year - Fiscal Year 2020/2019 | 359 | 217
Origination year - Fiscal Year 2021/2020 | 1,080 | 561
Origination year - Fiscal Year 2022/2021 | 532 | 1,578
Gross | 2,149 | 2,453
1 to 4 | Lease Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 6 | 2
Origination year - Fiscal Year 2018/2017 | 51 | 20
Origination year - Fiscal Year 2019/2018 | 104 | 100
Origination year - Fiscal Year 2020/2019 | 171 | 168
Origination year - Fiscal Year 2021/2020 | 209 | 282
Origination year - Fiscal Year 2022/2021 | 125 | 227
Gross | 666 | 799
1 to 4 | Loan Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 16 | 4
Origination year - Fiscal Year 2018/2017 | 85 | 86
Origination year - Fiscal Year 2019/2018 | 221 | 134
Origination year - Fiscal Year 2020/2019 | 665 | 577
Origination year - Fiscal Year 2021/2020 | 1,182 | 990
Origination year - Fiscal Year 2022/2021 | 660 | 1,552
Gross | 2,829 | 3,343
1 to 4 | Financed Service Contracts |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 2 | 0
Origination year - Fiscal Year 2018/2017 | 16 | 38
Origination year - Fiscal Year 2019/2018 | 65 | 26
Origination year - Fiscal Year 2020/2019 | 169 | 106
Origination year - Fiscal Year 2021/2020 | 740 | 252
Origination year - Fiscal Year 2022/2021 | 380 | 1,053
Gross | 1,372 | 1,475
5 to 6 | Lease Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 6 | 1
Origination year - Fiscal Year 2018/2017 | 28 | 17
Origination year - Fiscal Year 2019/2018 | 105 | 65
Origination year - Fiscal Year 2020/2019 | 199 | 187
Origination year - Fiscal Year 2021/2020 | 200 | 285
Origination year - Fiscal Year 2022/2021 | 57 | 231
Gross | 595 | 786
5 to 6 | Loan Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 5 | 0
Origination year - Fiscal Year 2018/2017 | 34 | 19
Origination year - Fiscal Year 2019/2018 | 119 | 75
Origination year - Fiscal Year 2020/2019 | 359 | 202
Origination year - Fiscal Year 2021/2020 | 662 | 505
Origination year - Fiscal Year 2022/2021 | 450 | 925
Gross | 1,629 | 1,726
5 to 6 | Financed Service Contracts |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 1 | 0
Origination year - Fiscal Year 2018/2017 | 15 | 6
Origination year - Fiscal Year 2019/2018 | 76 | 26
Origination year - Fiscal Year 2020/2019 | 184 | 105
Origination year - Fiscal Year 2021/2020 | 337 | 302
Origination year - Fiscal Year 2022/2021 | 149 | 520
Gross | 762 | 959
7 and Higher | Lease Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 1 | 0
Origination year - Fiscal Year 2018/2017 | 2 | 2
Origination year - Fiscal Year 2019/2018 | 6 | 6
Origination year - Fiscal Year 2020/2019 | 15 | 12
Origination year - Fiscal Year 2021/2020 | 4 | 23
Origination year - Fiscal Year 2022/2021 | 11 | 4
Gross | 39 | 47
7 and Higher | Loan Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 2 | 1
Origination year - Fiscal Year 2018/2017 | 2 | 2
Origination year - Fiscal Year 2019/2018 | 36 | 4
Origination year - Fiscal Year 2020/2019 | 36 | 50
Origination year - Fiscal Year 2021/2020 | 26 | 43
Origination year - Fiscal Year 2022/2021 | 21 | 34
Gross | 123 | 134
7 and Higher | Financed Service Contracts |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 0 | 0
Origination year - Fiscal Year 2018/2017 | 0 | 0
Origination year - Fiscal Year 2019/2018 | 3 | 1
Origination year - Fiscal Year 2020/2019 | 6 | 6
Origination year - Fiscal Year 2021/2020 | 3 | 7
Origination year - Fiscal Year 2022/2021 | 3 | 5
Gross | $ 15 | $ 19

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