Financing Receivables - Schedule of Aging Analysis of Financing Receivables (Details) - USD ($) $ in Millions	Apr. 26, 2025	Jul. 27, 2024
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 6,198	$ 6,712
120+ Still Accruing	11	15
Nonaccrual Financing Receivables	10	7
Impaired Financing Receivables	10	7
Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	207	109
31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	40	48
61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	143	21
91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	24	40
Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,991	6,603
Loan Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,276	5,858
120+ Still Accruing	8	14
Nonaccrual Financing Receivables	9	7
Impaired Financing Receivables	9	7
Loan Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	185	86
Loan Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	30	34
Loan Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	137	17
Loan Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	18	35
Loan Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,091	5,772
Lease Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	922	854
120+ Still Accruing	3	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	22	23
Lease Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	10	14
Lease Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6	4
Lease Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6	5
Lease Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 900	$ 831