Financing Receivables - Summary of Allowances for Credit Loss and Related Financing Receivables (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 25, 2025	Jan. 27, 2024	Jan. 25, 2025	Jan. 27, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	$ 64	$ 74	$ 65	$ 72
Provisions (benefits)	(4)	(1)	(5)	1
Recoveries (write-offs), net	(3)	(4)	(3)	(4)
Foreign exchange and other	2		2
Allowance for credit loss, end of period	59	69	59	69
Loan Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	49	58	50	53
Provisions (benefits)	(2)	(1)	(3)	4
Recoveries (write-offs), net	(3)	(4)	(3)	(4)
Foreign exchange and other	1		1
Allowance for credit loss, end of period	45	53	45	53
Lease Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning of period	15	16	15	19
Provisions (benefits)	(2)	0	(2)	(3)
Recoveries (write-offs), net	0	0	0	0
Foreign exchange and other	1		1
Allowance for credit loss, end of period	$ 14	$ 16	$ 14	$ 16