Financing Receivables - Summary of Allowances for Credit Loss and Related Financing Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 29, 2023	Jul. 30, 2022	Jul. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	$ 126	$ 127	$ 138
Provisions (benefits)	(8)	(9)	(27)
Recoveries (write-offs), net	(41)	(2)	(2)
Foreign exchange and other	(5)	10	18
Allowance for credit loss, end of period	72	126	127
Loan Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	103	89	90
Provisions (benefits)	(7)	4	(17)
Recoveries (write-offs), net	(38)	0	(1)
Foreign exchange and other	(5)	10	17
Allowance for credit loss, end of period	53	103	89
Lease Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	23	38	48
Provisions (benefits)	(1)	(13)	(10)
Recoveries (write-offs), net	(3)	(2)	(1)
Foreign exchange and other	0	0	1
Allowance for credit loss, end of period	$ 19	$ 23	$ 38