Investments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 26, 2024	Oct. 28, 2023	Jul. 27, 2024
Schedule of Investments [Line Items]
Marketable equity securities	$ 412		$ 481
Net unrealized gain (loss) on marketable securities	25	$ (42)
Net loss (gain) on non-marketable equity securities measured using the measurement alternative	8
Investments in privately held companies	1,800		1,800
Funding commitments	300
Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Investments in privately held companies	800
Private equity funds | Fair value measured at NAV per share
Schedule of Investments [Line Items]
Equity interests held in certain private equity funds	$ 800		$ 800