Financing Receivables - Summary of Allowances for Credit Loss and Related Financing Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 27, 2024	Jul. 29, 2023	Jul. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	$ 72	$ 126	$ 127
Provisions (benefits)	(2)	(8)	(9)
Recoveries (write-offs), net	(5)	(41)	(2)
Foreign exchange and other		(5)	10
Allowance for credit loss, end of period	65	72	126
Loan Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	53	103	89
Provisions (benefits)	1	(7)	4
Recoveries (write-offs), net	(4)	(38)	0
Foreign exchange and other		(5)	10
Allowance for credit loss, end of period	50	53	103
Lease Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	19	23	38
Provisions (benefits)	(3)	(1)	(13)
Recoveries (write-offs), net	(1)	(3)	(2)
Foreign exchange and other		0	0
Allowance for credit loss, end of period	$ 15	$ 19	$ 23