Financing Receivables - Schedule of Aging Analysis of Financing Receivables (Details) - USD ($) $ in Millions	Apr. 29, 2023	Jul. 30, 2022
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 6,799	$ 7,964
120+ Still Accruing	22	21
Nonaccrual Financing Receivables	19	71
Impaired Financing Receivables	19	71
Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	261	329
31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	109	106
61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	49	68
91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	103	155
Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6,538	7,635
Loan Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,879	6,842
120+ Still Accruing	15	14
Nonaccrual Financing Receivables	15	60
Impaired Financing Receivables	15	60
Loan Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	212	289
Loan Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	94	98
Loan Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	39	62
Loan Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	79	129
Loan Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,667	6,553
Lease Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	920	1,122
120+ Still Accruing	7	7
Nonaccrual Financing Receivables	4	11
Impaired Financing Receivables	4	11
Lease Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	49	40
Lease Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	15	8
Lease Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	10	6
Lease Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	24	26
Lease Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 871	$ 1,082