Financing Receivables - Summary of Allowances for Credit Loss and Related Financing Receivables (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 27, 2024	Apr. 29, 2023	Apr. 27, 2024	Apr. 29, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	$ 69	$ 113	$ 72	$ 126
Provisions (benefits)	(3)	(4)	(2)	(12)
Recoveries (write-offs), net	(1)	(39)	(5)	(39)
Other	(1)		(1)	(5)
Allowance for credit loss, end of period	64	70	64	70
Loan Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	53	94	53	103
Provisions (benefits)	(3)	(3)	1	(7)
Recoveries (write-offs), net	0	(38)	(4)	(38)
Other	(1)		(1)	(5)
Allowance for credit loss, end of period	49	53	49	53
Lease Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	16	19	19	23
Provisions (benefits)	0	(1)	(3)	(5)
Recoveries (write-offs), net	(1)	(1)	(1)	(1)
Other	0		0	0
Allowance for credit loss, end of period	$ 15	$ 17	$ 15	$ 17