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Financing Receivables - Schedule of Financing Receivables Categorized by Internal Credit Risk Rating (Details) - USD ($) $ in Millions | Oct. 30, 2021 | Jul. 31, 2021
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | $ 68 | $ 8
Origination year - Fiscal Year 2018/2017 | 329 | 190
Origination year - Fiscal Year 2019/2018 | 939 | 437
Origination year - Fiscal Year 2020/2019 | 2,146 | 1,413
Origination year - Fiscal Year 2021/2020 | 3,784 | 2,689
Origination year - Fiscal Year 2022/2021 | 1,362 | 4,551
Gross | 8,628 | 9,288
Lease Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 22 | 3
Origination year - Fiscal Year 2018/2017 | 123 | 39
Origination year - Fiscal Year 2019/2018 | 284 | 171
Origination year - Fiscal Year 2020/2019 | 481 | 367
Origination year - Fiscal Year 2021/2020 | 495 | 590
Origination year - Fiscal Year 2022/2021 | 85 | 462
Gross | 1,490 | 1,632
Loan Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 40 | 5
Origination year - Fiscal Year 2018/2017 | 166 | 107
Origination year - Fiscal Year 2019/2018 | 476 | 213
Origination year - Fiscal Year 2020/2019 | 1,212 | 829
Origination year - Fiscal Year 2021/2020 | 2,091 | 1,538
Origination year - Fiscal Year 2022/2021 | 824 | 2,511
Gross | 4,809 | 5,203
Financed Service Contracts |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 6 | 0
Origination year - Fiscal Year 2018/2017 | 40 | 44
Origination year - Fiscal Year 2019/2018 | 179 | 53
Origination year - Fiscal Year 2020/2019 | 453 | 217
Origination year - Fiscal Year 2021/2020 | 1,198 | 561
Origination year - Fiscal Year 2022/2021 | 453 | 1,578
Gross | 2,329 | 2,453
1 to 4 | Lease Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 11 | 2
Origination year - Fiscal Year 2018/2017 | 75 | 20
Origination year - Fiscal Year 2019/2018 | 134 | 100
Origination year - Fiscal Year 2020/2019 | 204 | 168
Origination year - Fiscal Year 2021/2020 | 244 | 282
Origination year - Fiscal Year 2022/2021 | 58 | 227
Gross | 726 | 799
1 to 4 | Loan Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 27 | 4
Origination year - Fiscal Year 2018/2017 | 108 | 86
Origination year - Fiscal Year 2019/2018 | 265 | 134
Origination year - Fiscal Year 2020/2019 | 733 | 577
Origination year - Fiscal Year 2021/2020 | 1,299 | 990
Origination year - Fiscal Year 2022/2021 | 503 | 1,552
Gross | 2,935 | 3,343
1 to 4 | Financed Service Contracts |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 3 | 0
Origination year - Fiscal Year 2018/2017 | 20 | 38
Origination year - Fiscal Year 2019/2018 | 85 | 26
Origination year - Fiscal Year 2020/2019 | 189 | 106
Origination year - Fiscal Year 2021/2020 | 824 | 252
Origination year - Fiscal Year 2022/2021 | 334 | 1,053
Gross | 1,455 | 1,475
5 to 6 | Lease Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 10 | 1
Origination year - Fiscal Year 2018/2017 | 44 | 17
Origination year - Fiscal Year 2019/2018 | 141 | 65
Origination year - Fiscal Year 2020/2019 | 258 | 187
Origination year - Fiscal Year 2021/2020 | 247 | 285
Origination year - Fiscal Year 2022/2021 | 15 | 231
Gross | 715 | 786
5 to 6 | Loan Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 11 | 0
Origination year - Fiscal Year 2018/2017 | 55 | 19
Origination year - Fiscal Year 2019/2018 | 170 | 75
Origination year - Fiscal Year 2020/2019 | 439 | 202
Origination year - Fiscal Year 2021/2020 | 764 | 505
Origination year - Fiscal Year 2022/2021 | 307 | 925
Gross | 1,746 | 1,726
5 to 6 | Financed Service Contracts |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 3 | 0
Origination year - Fiscal Year 2018/2017 | 19 | 6
Origination year - Fiscal Year 2019/2018 | 90 | 26
Origination year - Fiscal Year 2020/2019 | 257 | 105
Origination year - Fiscal Year 2021/2020 | 370 | 302
Origination year - Fiscal Year 2022/2021 | 116 | 520
Gross | 855 | 959
7 and Higher | Lease Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 1 | 0
Origination year - Fiscal Year 2018/2017 | 4 | 2
Origination year - Fiscal Year 2019/2018 | 9 | 6
Origination year - Fiscal Year 2020/2019 | 19 | 12
Origination year - Fiscal Year 2021/2020 | 4 | 23
Origination year - Fiscal Year 2022/2021 | 12 | 4
Gross | 49 | 47
7 and Higher | Loan Receivables |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Origination year - Prior | 2 | 1
Origination year - Fiscal Year 2018/2017 | 3 | 2
Origination year - Fiscal Year 2019/2018 | 41 | 4
Origination year - Fiscal Year 2020/2019 | 40 | 50
Origination year - Fiscal Year 2021/2020 | 28 | 43
Origination year - Fiscal Year 2022/2021 | 14 | 34
Gross | 128 | 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 | 1 | 0
Origination year - Fiscal Year 2019/2018 | 4 | 1
Origination year - Fiscal Year 2020/2019 | 7 | 6
Origination year - Fiscal Year 2021/2020 | 4 | 7
Origination year - Fiscal Year 2022/2021 | 3 | 5
Gross | $ 19 | $ 19

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