Financing Receivables - Summary of Allowances for Credit Loss and Related Financing Receivables (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2023	Jan. 29, 2022	Jan. 28, 2023	Jan. 29, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	$ 120	$ 109	$ 126	$ 127
Provisions (benefits)	(4)	(10)	(8)	(28)
Other	(3)		(5)
Recoveries (write-offs), net		(2)		(2)
Allowance for credit loss, end of period	113	97	113	97
Loan Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	101	76	103	89
Provisions (benefits)	(3)	(6)	(4)	(19)
Other	(4)		(5)
Recoveries (write-offs), net		0		0
Allowance for credit loss, end of period	94	70	94	70
Lease Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	19	33	23	38
Provisions (benefits)	(1)	(4)	(4)	(9)
Other	1		0
Recoveries (write-offs), net		(2)		(2)
Allowance for credit loss, end of period	$ 19	$ 27	$ 19	$ 27