Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 25, 2025	Jan. 27, 2024	Jan. 25, 2025	Jan. 27, 2024	Jul. 27, 2024
Loss Contingencies [Line Items]
Commitments and contingencies (Note 14)
Volume of channel partner financing	6,200	$ 12,200	6,600	$ 14,800
Balance of the channel partner financing subject to guarantees	1,300		$ 1,300		1,200
Minimum
Loss Contingencies [Line Items]
Warranty period for products			90 days
Channel partners revolving short-term financing payment term			60 days
Maximum
Loss Contingencies [Line Items]
Warranty period for products			5 years
Channel partners revolving short-term financing payment term			90 days
Investments In Privately Held Companies
Loss Contingencies [Line Items]
Commitments and contingencies (Note 14)	200		$ 200		200
Inventories
Loss Contingencies [Line Items]
Liability for purchase commitments	$ 383		$ 383		$ 498