Investments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 24, 2026	Jan. 25, 2025	Jan. 24, 2026	Jan. 25, 2025	Jul. 26, 2025
Schedule of Investments [Line Items]
Marketable equity securities	$ 359		$ 359		$ 383
Net unrealized gain (loss) on marketable securities	(34)	$ 16	(4)	$ 36
Funding commitments	700		700
Equity interests held in certain private equity funds	700		700		600
Investments in privately held companies	2,100		2,100		1,900
Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Investments in privately held companies	800		800
NCI equity	221		221		162
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		$ 700