Financing Receivables - Schedule of Financing Receivables Categorized by Internal Credit Risk Rating (Details) - USD ($) $ in Millions	Jan. 24, 2026	Jul. 26, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	$ 71	$ 4
Origination year - July 30, 2022	161	154
Origination year - July 29, 2023	498	344
Origination year - July 27, 2024	1,469	739
Origination year - July 26, 2025	2,528	2,138
Origination year - Six Months Ended January 24, 2026	1,893	3,132
Gross	6,620	6,511
Loan Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	67	4
Origination year - July 30, 2022	134	139
Origination year - July 29, 2023	364	295
Origination year - July 27, 2024	1,224	547
Origination year - July 26, 2025	2,271	1,823
Origination year - Six Months Ended January 24, 2026	1,765	2,820
Gross	5,825	5,628
Lease Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	4	0
Origination year - July 30, 2022	27	15
Origination year - July 29, 2023	134	49
Origination year - July 27, 2024	245	192
Origination year - July 26, 2025	257	315
Origination year - Six Months Ended January 24, 2026	128	312
Gross	795	883
1 to 4 | Loan Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	45	2
Origination year - July 30, 2022	112	83
Origination year - July 29, 2023	273	236
Origination year - July 27, 2024	937	371
Origination year - July 26, 2025	1,391	1,258
Origination year - Six Months Ended January 24, 2026	1,116	1,556
Gross	3,874	3,506
1 to 4 | Lease Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	2	0
Origination year - July 30, 2022	13	9
Origination year - July 29, 2023	81	23
Origination year - July 27, 2024	150	112
Origination year - July 26, 2025	176	187
Origination year - Six Months Ended January 24, 2026	67	207
Gross	489	538
5 to 6 | Loan Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	22	2
Origination year - July 30, 2022	20	56
Origination year - July 29, 2023	89	53
Origination year - July 27, 2024	283	167
Origination year - July 26, 2025	862	561
Origination year - Six Months Ended January 24, 2026	647	1,248
Gross	1,923	2,087
5 to 6 | Lease Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	2	0
Origination year - July 30, 2022	13	6
Origination year - July 29, 2023	51	25
Origination year - July 27, 2024	89	77
Origination year - July 26, 2025	80	120
Origination year - Six Months Ended January 24, 2026	61	103
Gross	296	331
7 and Higher | Loan Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	0	0
Origination year - July 30, 2022	2	0
Origination year - July 29, 2023	2	6
Origination year - July 27, 2024	4	9
Origination year - July 26, 2025	18	4
Origination year - Six Months Ended January 24, 2026	2	16
Gross	28	35
7 and Higher | Lease Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Origination year - Prior	0	0
Origination year - July 30, 2022	1	0
Origination year - July 29, 2023	2	1
Origination year - July 27, 2024	6	3
Origination year - July 26, 2025	1	8
Origination year - Six Months Ended January 24, 2026	0	2
Gross	$ 10	$ 14