Revenue - Allowance for Accounts Receivable (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 25, 2025	Jan. 27, 2024	Jan. 25, 2025	Jan. 27, 2024
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss at beginning of period	$ 78	$ 82	$ 87	$ 85
Provisions (benefits)	12	9	12	11
Recoveries (write-offs), net	(10)	(12)	(19)	(17)
Allowance for credit loss at end of period	$ 80	$ 79	$ 80	$ 79