Financing Receivables - Schedule of Aging Analysis of Financing Receivables (Details) - USD ($) $ in Millions	Jan. 25, 2025	Jul. 27, 2024
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 6,309	$ 6,712
120+ Still Accruing	20	15
Nonaccrual Financing Receivables	11	7
Impaired Financing Receivables	11	7
Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	127	109
31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	51	48
61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	20	21
91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	56	40
Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6,182	6,603
Loan Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,423	5,858
120+ Still Accruing	18	14
Nonaccrual Financing Receivables	10	7
Impaired Financing Receivables	10	7
Loan Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	101	86
Loan Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	37	34
Loan Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	16	17
Loan Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	48	35
Loan Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,322	5,772
Lease Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	886	854
120+ Still Accruing	2	1
Nonaccrual Financing Receivables	1	0
Impaired Financing Receivables	1	0
Lease Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	26	23
Lease Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	14	14
Lease Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	4	4
Lease Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	8	5
Lease Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 860	$ 831