Restructuring and Other Charges - Schedule of Activities Related to Restructuring and Other Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 29, 2023	Jul. 30, 2022	Jul. 31, 2021
Restructuring Reserve [Roll Forward]
Liability, beginning of period	$ 9	$ 34	$ 72
Charges	531	6	886
Cash payments	(314)	(25)	(890)
Non-cash items	(13)	(6)	(34)
Liability, end of period	213	9	34
FISCAL 2023 PLAN | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	0	0	0
Charges	465	0	0
Cash payments	(301)	0	0
Non-cash items	2	0	0
Liability, end of period	166	0	0
FISCAL 2023 PLAN | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	0	0	0
Charges	70	0	0
Cash payments	(11)	0	0
Non-cash items	(15)	0	0
Liability, end of period	44	0	0
FISCAL 2021 AND PRIOR PLANS | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	2	16	58
Charges	0	9	836
Cash payments	(1)	(23)	(879)
Non-cash items	0	0	1
Liability, end of period	1	2	16
FISCAL 2021 AND PRIOR PLANS | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	7	18	14
Charges	(4)	(3)	50
Cash payments	(1)	(2)	(11)
Non-cash items	0	(6)	(35)
Liability, end of period	$ 2	$ 7	$ 18