Financing Receivables - Schedule of Aging Analysis of Financing Receivables (Details) - USD ($) $ in Millions	Jan. 24, 2026	Jul. 26, 2025
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 6,620	$ 6,511
120+ Still Accruing	9	8
Nonaccrual Financing Receivables	2	6
Impaired Financing Receivables	2	6
Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	129	68
31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	44	25
61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	26	21
91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	59	22
Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6,491	6,443
Loan Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,825	5,628
120+ Still Accruing	4	4
Nonaccrual Financing Receivables	1	5
Impaired Financing Receivables	1	5
Loan Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	102	52
Loan Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	31	18
Loan Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	18	18
Loan Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	53	16
Loan Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,723	5,576
Lease Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	795	883
120+ Still Accruing	5	4
Nonaccrual Financing Receivables	1	1
Impaired Financing Receivables	1	1
Lease Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	27	16
Lease Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	13	7
Lease Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	8	3
Lease Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6	6
Lease Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 768	$ 867