Financing Receivables - Schedule of Aging Analysis of Financing Receivables (Details) - USD ($) $ in Millions	Oct. 25, 2025	Jul. 26, 2025
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 6,788	$ 6,511
120+ Still Accruing	13	8
Nonaccrual Financing Receivables	4	6
Impaired Financing Receivables	4	6
Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	134	68
31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	58	25
61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	29	21
91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	47	22
Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6,654	6,443
Loan Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,826	5,628
120+ Still Accruing	8	4
Nonaccrual Financing Receivables	3	5
Impaired Financing Receivables	3	5
Loan Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	104	52
Loan Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	46	18
Loan Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	27	18
Loan Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	31	16
Loan Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,722	5,576
Lease Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	962	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	30	16
Lease Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	12	7
Lease Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	2	3
Lease Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	16	6
Lease Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 932	$ 867