Derivative Instruments - Effect of Derivative Instruments Not Designated as Hedges on Consolidated Statement of Operations (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Millions	12 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 25, 2020
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR  THE YEARS ENDED	$ (320)	$ 179	$ 19
Foreign currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR  THE YEARS ENDED	$ (237)	$ 2	$ (5)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other income (loss), net	Other income (loss), net	Other income (loss), net
Total return swaps—deferred compensation
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR  THE YEARS ENDED	$ (92)	$ 157	$ 15
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Operating Expenses	Operating Expenses	Operating Expenses
Equity derivatives
Derivative Instruments, Gain (Loss) [Line Items]
GAINS (LOSSES) FOR  THE YEARS ENDED	$ 9	$ 20	$ 9
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other income (loss), net	Other income (loss), net	Other income (loss), net