Investments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 27, 2024	Jan. 28, 2023	Jan. 27, 2024	Jan. 28, 2023	Jul. 29, 2023
Schedule of Investments [Line Items]
Marketable equity securities	$ 426		$ 426		$ 431
Net unrealized gain (loss) on marketable securities	55	$ 11	17	$ (9)
Net loss (gain) on non-marketable equity securities measured using the measurement alternative	134	$ (3)	134	$ 8
Investments in privately held companies	1,600		1,600		1,800
Funding commitments	200		200
Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Investments in privately held companies	900		900
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		$ 900