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Fair Value of Non-marketable Equity Securities - Narrative (Details) $ in Millions	3 Months Ended
	Apr. 27, 2025 investment	Oct. 26, 2025 USD ($)	Oct. 27, 2024 USD ($)
Fair Value Disclosures [Abstract]
Number of investments reclassified | investment	1
Cumulative gross unrealized gains		$ 1,400	$ 374
Cumulative gross losses and impairments		$ (167)	$ 74

X

- Definition

Equity Securities Without Readily Determinable Fair Value, Impairment Loss And Downward Price Adjustment, Cumulative Amount

+ References

No definition available.

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- Definition

Number Of Investments Reclassified

+ References

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X

- Definition

Amount of cumulative gain from upward price adjustment on investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479536/321-10-50-3

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