Restructuring and Other Charges - Schedule of Activities Related to Restructuring and Other Charges (Details) - USD ($) $ in Millions	9 Months Ended
	Apr. 30, 2022	May 01, 2021
Restructuring Reserve [Roll Forward]
Liability, beginning of period	$ 34	$ 72
Charges	8	878
Cash payments	(23)	(868)
Non-cash items	(5)	(32)
Liability, end of period	14	50
FISCAL 2020 AND PRIOR PLANS | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	0	58
Charges	0	0
Cash payments	0	(58)
Non-cash items	0	0
Liability, end of period	0	0
FISCAL 2020 AND PRIOR PLANS | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	10	14
Charges	(5)	9
Cash payments	(1)	(5)
Non-cash items	0	(1)
Liability, end of period	4	17
FISCAL 2021 PLAN | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	16	0
Charges	10	828
Cash payments	(21)	(801)
Non-cash items	0	0
Liability, end of period	5	27
FISCAL 2021 PLAN | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	8	0
Charges	3	41
Cash payments	(1)	(4)
Non-cash items	(5)	(31)
Liability, end of period	$ 5	$ 6