Restructuring and Other Charges - Schedule of Activities Related to Restructuring and Other Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 25, 2020
Restructuring Reserve [Roll Forward]
Liability, beginning of period	$ 34	$ 72	$ 33
Charges	6	886	481
Cash payments	(25)	(890)	(327)
Non-cash items	(6)	(34)	(115)
Liability, end of period	9	34	72
FISCAL 2020 AND PRIOR PLANS | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	0	58	22
Charges	0	0	353
Cash payments	0	(58)	(317)
Non-cash items	0	0	0
Liability, end of period	0	0	58
FISCAL 2020 AND PRIOR PLANS | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	10	14	11
Charges	(6)	5	128
Cash payments	(1)	(6)	(10)
Non-cash items	0	(3)	(115)
Liability, end of period	3	10	14
FISCAL 2021 PLAN | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	16	0	0
Charges	9	836	0
Cash payments	(23)	(821)	0
Non-cash items	0	1	0
Liability, end of period	2	16	0
FISCAL 2021 PLAN | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	8	0	0
Charges	3	45	0
Cash payments	(1)	(5)	0
Non-cash items	(6)	(32)	0
Liability, end of period	$ 4	$ 8	$ 0