Revenue - Allowance for Accounts Receivable (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 28, 2023	Jan. 29, 2022	Jan. 28, 2023	Jan. 29, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss at beginning of period	$ 88	$ 114	$ 83	$ 109
Provisions (benefits)	3	17	14	36
Recoveries (write-offs), net	(5)	(52)	(11)	(66)
Foreign exchange and other	0	(9)	0	(9)
Allowance for credit loss at end of period	$ 86	$ 70	$ 86	$ 70