Financing Receivables - Schedule of Aging Analysis of Financing Receivables (Details) - USD ($) $ in Millions	Jul. 26, 2025	Jul. 27, 2024
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 6,511	$ 6,712
120+ Still Accruing	8	15
Nonaccrual Financing Receivables	6	7
Impaired Financing Receivables	6	7
Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	68	109
31 - 60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	25	48
61 - 90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	21	21
91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	22	40
Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6,443	6,603
Loan Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,628	5,858
120+ Still Accruing	4	14
Nonaccrual Financing Receivables	5	7
Impaired Financing Receivables	5	7
Loan Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	52	86
Loan Receivables | 31 - 60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	18	34
Loan Receivables | 61 - 90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	18	17
Loan Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	16	35
Loan Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,576	5,772
Lease Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	883	854
120+ Still Accruing	4	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	16	23
Lease Receivables | 31 - 60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	7	14
Lease Receivables | 61 - 90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	3	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	$ 867	$ 831