Financing Receivables - Schedule of Financing Receivables Categorized by Internal Credit Risk Rating (Details) - USD ($) $ in Millions	Jul. 27, 2024	Jul. 29, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	$ 9	$ 18
Origination year - Fiscal Year 2019/2018	127	108
Origination year - Fiscal Year 2020/2019	539	500
Origination year - Fiscal Year 2021/2020	852	1,268
Origination year - Fiscal Year 2022/2021	1,694	1,747
Origination year - Fiscal Year 2023/2022	3,491	3,196
Total	6,712	6,837
Loan Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	7	14
Origination year - Fiscal Year 2019/2018	108	74
Origination year - Fiscal Year 2020/2019	478	397
Origination year - Fiscal Year 2021/2020	759	1,095
Origination year - Fiscal Year 2022/2021	1,385	1,571
Origination year - Fiscal Year 2023/2022	3,121	2,759
Total	5,858	5,910
Loan Receivables | 1 to 4
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	2	10
Origination year - Fiscal Year 2019/2018	78	53
Origination year - Fiscal Year 2020/2019	341	251
Origination year - Fiscal Year 2021/2020	555	791
Origination year - Fiscal Year 2022/2021	945	1,077
Origination year - Fiscal Year 2023/2022	1,803	1,784
Total	3,724	3,966
Loan Receivables | 5 to 6
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	2	3
Origination year - Fiscal Year 2019/2018	29	14
Origination year - Fiscal Year 2020/2019	127	131
Origination year - Fiscal Year 2021/2020	130	287
Origination year - Fiscal Year 2022/2021	426	465
Origination year - Fiscal Year 2023/2022	1,314	936
Total	2,028	1,836
Loan Receivables | 7 and Higher
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	3	1
Origination year - Fiscal Year 2019/2018	1	7
Origination year - Fiscal Year 2020/2019	10	15
Origination year - Fiscal Year 2021/2020	74	17
Origination year - Fiscal Year 2022/2021	14	29
Origination year - Fiscal Year 2023/2022	4	39
Total	106	108
Lease Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	2	4
Origination year - Fiscal Year 2019/2018	19	34
Origination year - Fiscal Year 2020/2019	61	103
Origination year - Fiscal Year 2021/2020	93	173
Origination year - Fiscal Year 2022/2021	309	176
Origination year - Fiscal Year 2023/2022	370	437
Total	854	927
Lease Receivables | 1 to 4
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	1	2
Origination year - Fiscal Year 2019/2018	8	20
Origination year - Fiscal Year 2020/2019	38	57
Origination year - Fiscal Year 2021/2020	46	111
Origination year - Fiscal Year 2022/2021	176	84
Origination year - Fiscal Year 2023/2022	341	235
Total	610	509
Lease Receivables | 5 to 6
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	1	2
Origination year - Fiscal Year 2019/2018	11	13
Origination year - Fiscal Year 2020/2019	22	44
Origination year - Fiscal Year 2021/2020	44	58
Origination year - Fiscal Year 2022/2021	129	87
Origination year - Fiscal Year 2023/2022	21	191
Total	228	395
Lease Receivables | 7 and Higher
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	0	0
Origination year - Fiscal Year 2019/2018	0	1
Origination year - Fiscal Year 2020/2019	1	2
Origination year - Fiscal Year 2021/2020	3	4
Origination year - Fiscal Year 2022/2021	4	5
Origination year - Fiscal Year 2023/2022	8	11
Total	$ 16	$ 23