Financing Receivables - Summary of Allowances for Credit Loss and Related Financing Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 26, 2025	Jul. 27, 2024	Jul. 29, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	$ 65	$ 72	$ 126
Provisions (benefits)	(9)	(2)	(8)
Recoveries (write-offs), net	(9)	(5)	(41)
Foreign exchange and other	3		(5)
Allowance for credit loss, end of period	50	65	72
Loan Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	50	53	103
Provisions (benefits)	(6)	1	(7)
Recoveries (write-offs), net	(9)	(4)	(38)
Foreign exchange and other	2		(5)
Allowance for credit loss, end of period	37	50	53
Lease Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	15	19	23
Provisions (benefits)	(3)	(3)	(1)
Recoveries (write-offs), net	0	(1)	(3)
Foreign exchange and other	1		0
Allowance for credit loss, end of period	$ 13	$ 15	$ 19