Investments - Cumulative Adjustments (Details) - Non-marketable equity securities under measurement alternative - USD ($) $ in Millions	Jul. 25, 2026	Jul. 26, 2025	Jul. 27, 2024
Equity Securities without Readily Determinable Fair Value [Line Items]
Upward adjustments	$ 893	$ 195
Downward adjustments, including impairments	(637)	(597)
Net adjustments	1,362	573
Level 3
Equity Securities without Readily Determinable Fair Value [Line Items]
Upward adjustments	698	11	$ 1
Downward adjustments, including impairments	(19)	(77)	(166)
Net adjustments	$ 679	$ (66)	$ (165)

Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment Including Impairment Loss, Cumulative Amount

No definition available.

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- Definition

Equity Securities without Readily Determinable Fair Value, Net Price Adjustment, Cumulative Amount

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 320
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477268/942-320-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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-Paragraph 2
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477268/942-320-50-2

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479536/321-10-50-3

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479536/321-10-50-3

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 321
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479536/321-10-50-3

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- 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
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147479536/321-10-50-3

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