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
	Oct. 29, 2022	Oct. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses)	$ (98)	$ 5
Foreign currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses)	(72)	(20)
Total return swaps—deferred compensation
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses)	(25)	21
Equity derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Total gains (losses)	$ (1)	$ 4