Investments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 26, 2025	Apr. 27, 2024	Apr. 26, 2025	Apr. 27, 2024	Jul. 27, 2024
Schedule of Investments [Line Items]
Marketable equity securities	$ 287		$ 287		$ 481
Net unrealized gain (loss) on marketable securities	35	$ 20	(6)	$ 40
Net loss (gain) on non-marketable equity securities measured using the measurement alternative	2	$ 21	18	$ 155
Investments in privately held companies	2,000		2,000		1,800
Funding commitments	300		300
Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Investments in privately held companies	800		800
Private equity funds | Fair value measured at NAV per share
Schedule of Investments [Line Items]
Equity interests held in certain private equity funds	$ 700		$ 700		$ 800