Financing Receivables - Schedule of Financing Receivables Categorized by Internal Credit Risk Rating (Details) - USD ($) $ in Millions	Jul. 29, 2023	Jul. 30, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	$ 18	$ 7
Origination year - Fiscal Year 2019/2018	108	103
Origination year - Fiscal Year 2020/2019	500	455
Origination year - Fiscal Year 2021/2020	1,268	1,208
Origination year - Fiscal Year 2022/2021	1,747	2,549
Origination year - Fiscal Year 2023/2022	3,196	3,642
Total	6,837	7,964
Loan Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	14	4
Origination year - Fiscal Year 2019/2018	74	67
Origination year - Fiscal Year 2020/2019	397	310
Origination year - Fiscal Year 2021/2020	1,095	926
Origination year - Fiscal Year 2022/2021	1,571	2,206
Origination year - Fiscal Year 2023/2022	2,759	3,329
Total	5,910	6,842
Loan Receivables | 1 to 4
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	10	2
Origination year - Fiscal Year 2019/2018	53	49
Origination year - Fiscal Year 2020/2019	251	173
Origination year - Fiscal Year 2021/2020	791	536
Origination year - Fiscal Year 2022/2021	1,077	1,458
Origination year - Fiscal Year 2023/2022	1,784	2,287
Total	3,966	4,505
Loan Receivables | 5 to 6
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	3	1
Origination year - Fiscal Year 2019/2018	14	17
Origination year - Fiscal Year 2020/2019	131	115
Origination year - Fiscal Year 2021/2020	287	345
Origination year - Fiscal Year 2022/2021	465	709
Origination year - Fiscal Year 2023/2022	936	1,030
Total	1,836	2,217
Loan Receivables | 7 and Higher
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	1	1
Origination year - Fiscal Year 2019/2018	7	1
Origination year - Fiscal Year 2020/2019	15	22
Origination year - Fiscal Year 2021/2020	17	45
Origination year - Fiscal Year 2022/2021	29	39
Origination year - Fiscal Year 2023/2022	39	12
Total	108	120
Lease Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	4	3
Origination year - Fiscal Year 2019/2018	34	36
Origination year - Fiscal Year 2020/2019	103	145
Origination year - Fiscal Year 2021/2020	173	282
Origination year - Fiscal Year 2022/2021	176	343
Origination year - Fiscal Year 2023/2022	437	313
Total	927	1,122
Lease Receivables | 1 to 4
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	2	2
Origination year - Fiscal Year 2019/2018	20	25
Origination year - Fiscal Year 2020/2019	57	74
Origination year - Fiscal Year 2021/2020	111	124
Origination year - Fiscal Year 2022/2021	84	176
Origination year - Fiscal Year 2023/2022	235	152
Total	509	553
Lease Receivables | 5 to 6
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	2	1
Origination year - Fiscal Year 2019/2018	13	10
Origination year - Fiscal Year 2020/2019	44	67
Origination year - Fiscal Year 2021/2020	58	146
Origination year - Fiscal Year 2022/2021	87	165
Origination year - Fiscal Year 2023/2022	191	151
Total	395	540
Lease Receivables | 7 and Higher
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	0	0
Origination year - Fiscal Year 2019/2018	1	1
Origination year - Fiscal Year 2020/2019	2	4
Origination year - Fiscal Year 2021/2020	4	12
Origination year - Fiscal Year 2022/2021	5	2
Origination year - Fiscal Year 2023/2022	11	10
Total	$ 23	$ 29