Investments - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 27, 2024	Jul. 29, 2023
Schedule of Investments [Line Items]
Marketable equity securities	$ 481	$ 431
Net unrealized gain (loss) on marketable securities	71	(36)
Net gain (loss) on non-marketable equity securities measured using the measurement alternative	(165)	8
Investments in privately held companies	1,800
Funding commitments	200
Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Investments in privately held companies	900
Net Asset Value (NAV) | Private equity funds
Schedule of Investments [Line Items]
Non-marketable equity securities included in other assets	$ 800	$ 900