Investments - Non-Marketable Equity Securities (Details) - USD ($) $ in Millions	Jul. 25, 2026	Jul. 26, 2025
Equity Securities without Readily Determinable Fair Value [Line Items]
Non-marketable equity securities included in other assets	$ 4,030	$ 1,921
Non-marketable equity securities under measurement alternative
Equity Securities without Readily Determinable Fair Value [Line Items]
Initial cost of non-marketable equity securities measured under the measurement alternative	1,106	975
Upward adjustments	893	195
Downward adjustments, including impairments	(637)	(597)
Net adjustments	1,362	573
Restricted equity securities
Equity Securities without Readily Determinable Fair Value [Line Items]
Non-marketable equity securities included in other assets	731	0
Consolidated investments
Equity Securities without Readily Determinable Fair Value [Line Items]
Non-marketable equity securities included in other assets	857	508
Non-marketable equity securities under NAV, equity method and other
Equity Securities without Readily Determinable Fair Value [Line Items]
Non-marketable equity securities included in other assets	$ 1,080	$ 840

Equity Securities without Readily Determinable Fair Value, Cost

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Amount of investment in equity security without readily determinable fair value.

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