Financing Receivables - Schedule of Aging Analysis of Financing Receivables (Details) - USD ($) $ in Millions	Apr. 27, 2024	Jul. 29, 2023
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 6,690	$ 6,837
120+ Still Accruing	23	23
Nonaccrual Financing Receivables	8	15
Impaired Financing Receivables	8	15
Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	123	147
31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	58	63
61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	15	24
91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	50	60
Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6,567	6,690
Loan Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,639	5,910
120+ Still Accruing	16	17
Nonaccrual Financing Receivables	8	12
Impaired Financing Receivables	8	12
Loan Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	91	104
Loan Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	41	47
Loan Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	14	20
Loan Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	36	37
Loan Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,548	5,806
Lease Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	1,051	927
120+ Still Accruing	7	6
Nonaccrual Financing Receivables	0	3
Impaired Financing Receivables	0	3
Lease Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	32	43
Lease Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	17	16
Lease Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	1	4
Lease Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	14	23
Lease Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 1,019	$ 884