Financing Receivables - Schedule of Financing Receivables Categorized by Internal Credit Risk Rating (Details) - USD ($) $ in Millions	Jul. 26, 2025	Jul. 27, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	$ 4	$ 9
Origination year - Fiscal Year 2021/2020	154	127
Origination year - Fiscal Year 2022/2021	344	539
Origination year - Fiscal Year 2023/2022	739	852
Origination year - Fiscal Year 2024/2023	2,138	1,694
Origination year - Fiscal Year 2025/2024	3,132	3,491
Total	6,511	6,712
Loan Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	4	7
Origination year - Fiscal Year 2021/2020	139	108
Origination year - Fiscal Year 2022/2021	295	478
Origination year - Fiscal Year 2023/2022	547	759
Origination year - Fiscal Year 2024/2023	1,823	1,385
Origination year - Fiscal Year 2025/2024	2,820	3,121
Total	5,628	5,858
Loan Receivables \| 1 to 4
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	2	2
Origination year - Fiscal Year 2021/2020	83	78
Origination year - Fiscal Year 2022/2021	236	341
Origination year - Fiscal Year 2023/2022	371	555
Origination year - Fiscal Year 2024/2023	1,258	945
Origination year - Fiscal Year 2025/2024	1,556	1,803
Total	3,506	3,724
Loan Receivables \| 5 to 6
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	2	2
Origination year - Fiscal Year 2021/2020	56	29
Origination year - Fiscal Year 2022/2021	53	127
Origination year - Fiscal Year 2023/2022	167	130
Origination year - Fiscal Year 2024/2023	561	426
Origination year - Fiscal Year 2025/2024	1,248	1,314
Total	2,087	2,028
Loan Receivables \| 7 and Higher
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	0	3
Origination year - Fiscal Year 2021/2020	0	1
Origination year - Fiscal Year 2022/2021	6	10
Origination year - Fiscal Year 2023/2022	9	74
Origination year - Fiscal Year 2024/2023	4	14
Origination year - Fiscal Year 2025/2024	16	4
Total	35	106
Lease Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	0	2
Origination year - Fiscal Year 2021/2020	15	19
Origination year - Fiscal Year 2022/2021	49	61
Origination year - Fiscal Year 2023/2022	192	93
Origination year - Fiscal Year 2024/2023	315	309
Origination year - Fiscal Year 2025/2024	312	370
Total	883	854
Lease Receivables \| 1 to 4
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	0	1
Origination year - Fiscal Year 2021/2020	9	8
Origination year - Fiscal Year 2022/2021	23	38
Origination year - Fiscal Year 2023/2022	112	46
Origination year - Fiscal Year 2024/2023	187	176
Origination year - Fiscal Year 2025/2024	207	341
Total	538	610
Lease Receivables \| 5 to 6
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	0	1
Origination year - Fiscal Year 2021/2020	6	11
Origination year - Fiscal Year 2022/2021	25	22
Origination year - Fiscal Year 2023/2022	77	44
Origination year - Fiscal Year 2024/2023	120	129
Origination year - Fiscal Year 2025/2024	103	21
Total	331	228
Lease Receivables \| 7 and Higher
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	0	0
Origination year - Fiscal Year 2021/2020	0	0
Origination year - Fiscal Year 2022/2021	1	1
Origination year - Fiscal Year 2023/2022	3	3
Origination year - Fiscal Year 2024/2023	8	4
Origination year - Fiscal Year 2025/2024	2	8
Total	$ 14	$ 16

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