Investments - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 26, 2025	Jul. 27, 2024	Jul. 29, 2023
Schedule of Investments [Line Items]
Marketable equity securities	$ 383	$ 481
Net unrealized gain (loss) on marketable securities	108	71	$ 36
Non-marketable equity securities included in other assets	600	600
Investments in privately held companies	1,900	1,800
Funding commitments	300
Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Investments in privately held companies	800
Noncontrolling interest	162	99
Net Asset Value (NAV) | Private equity funds
Schedule of Investments [Line Items]
Non-marketable equity securities included in other assets	$ 700	$ 800