Financing Receivables - Schedule of Aging Analysis of Financing Receivables (Details) - USD ($) $ in Millions	Jan. 28, 2023	Jul. 30, 2022
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 7,157	$ 7,964
120+ Still Accruing	22	21
Nonaccrual Financing Receivables	69	71
Impaired Financing Receivables	69	71
Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	269	329
31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	142	106
61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	59	68
91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	68	155
Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6,888	7,635
Loan Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	6,136	6,842
120+ Still Accruing	14	14
Nonaccrual Financing Receivables	60	60
Impaired Financing Receivables	60	60
Loan Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	169	289
Loan Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	100	98
Loan Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	23	62
Loan Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	46	129
Loan Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	5,967	6,553
Lease Receivables
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	1,021	1,122
120+ Still Accruing	8	7
Nonaccrual Financing Receivables	9	11
Impaired Financing Receivables	9	11
Lease Receivables | Total Past Due
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	100	40
Lease Receivables | 31-60
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	42	8
Lease Receivables | 61-90
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	36	6
Lease Receivables | 91+
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	22	26
Lease Receivables | Current
Financing Receivable, Past Due [Line Items]
Gross Financing Receivables	$ 921	$ 1,082