Financing Receivables - Summary of Allowances for Credit Loss and Related Financing Receivables (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 29, 2022	Oct. 30, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	$ 126	$ 127
Provisions (benefits)	(4)	(18)
Other	(2)
Allowance for credit loss, end of period	120	109
Loan Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	103	89
Provisions (benefits)	(1)	(13)
Other	(1)
Allowance for credit loss, end of period	101	76
Lease Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	23	38
Provisions (benefits)	(3)	(5)
Other	(1)
Allowance for credit loss, end of period	$ 19	$ 33