Derivative Instruments - Effect of Derivative Instruments Not Designated as Hedges on Consolidated Statements of Operations (Details) - Derivatives not designated as hedging instruments: - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 27, 2024	Jan. 28, 2023	Jan. 27, 2024	Jan. 28, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses)	$ 146	$ 189	$ (59)	$ 91
Foreign currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses)	53	140	(77)	68
Total return swaps—deferred compensation
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses)	93	44	16	19
Equity derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses)	$ 0	$ 5	$ 2	$ 4