Restructuring and Other Charges - Schedule of Activities Related to Restructuring and Other Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 27, 2024	Jul. 29, 2023	Jul. 30, 2022
Restructuring Reserve [Roll Forward]
Liability, beginning of period	$ 213	$ 9	$ 34
Charges	789	531	6
Cash payments	(691)	(314)	(25)
Non-cash items	(37)	(13)	(6)
Liability, end of period	$ 274	213	9
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Restructuring and other charges
FISCAL 2024 PLAN | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	$ 0	0	0
Charges	627	0	0
Cash payments	(426)	0	0
Non-cash items	0	0	0
Liability, end of period	201	0	0
FISCAL 2024 PLAN | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	0	0	0
Charges	27	0	0
Cash payments	(3)	0	0
Non-cash items	(15)	0	0
Liability, end of period	9	0	0
FISCAL 2023 AND PRIOR PLANS | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	167	2	16
Charges	104	465	9
Cash payments	(251)	(302)	(23)
Non-cash items	0	2	0
Liability, end of period	20	167	2
FISCAL 2023 AND PRIOR PLANS | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	46	7	18
Charges	31	66	(3)
Cash payments	(11)	(12)	(2)
Non-cash items	(22)	(15)	(6)
Liability, end of period	$ 44	$ 46	$ 7