Restructuring and Other Charges - Schedule of Activities Related to Restructuring and Other Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 26, 2025	Jul. 27, 2024	Jul. 29, 2023
Restructuring Reserve [Roll Forward]
Liability, beginning of period	$ 274	$ 213	$ 9
Charges	744	789	531
Cash payments	(770)	(691)	(314)
Non-cash items	(101)	(37)	(13)
Liability, end of period	$ 147	274	213
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Restructuring and other charges
FISCAL 2025 PLAN | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	$ 0	0	0
Charges	617	0	0
Cash payments	(582)	0	0
Non-cash items	31	0	0
Liability, end of period	66	0	0
FISCAL 2025 PLAN | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	0	0	0
Charges	127	0	0
Cash payments	(9)	0	0
Non-cash items	(72)	0	0
Liability, end of period	46	0	0
FISCAL 2024 AND PRIOR PLANS | Employee Severance
Restructuring Reserve [Roll Forward]
Liability, beginning of period	221	167	2
Charges	0	731	465
Cash payments	(170)	(677)	(302)
Non-cash items	(29)	0	2
Liability, end of period	22	221	167
FISCAL 2024 AND PRIOR PLANS | Other
Restructuring Reserve [Roll Forward]
Liability, beginning of period	53	46	7
Charges	0	58	66
Cash payments	(9)	(14)	(12)
Non-cash items	(31)	(37)	(15)
Liability, end of period	$ 13	$ 53	$ 46