Available-for-Sale Debt and Equity Investments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Jul. 30, 2022
Schedule of Investments [Line Items]
Net unsettled investment purchases	$ 42
Net unsettled investment sales			$ 70
Marketable equity securities	245		241
Net unrealized gain (loss) on marketable securities	(20)	$ 5
Net loss (gain) on non-marketable equity securities measured using the measurement alternative	12	$ (2)
Investments in privately held companies	1,800		1,900
Funding commitments	300
Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Investments in privately held companies	1,100
Private equity funds | Fair value measured at NAV per share
Schedule of Investments [Line Items]
Equity interests held in certain private equity funds	$ 1,000		$ 1,100