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Fair Value Measurements (Equity Investments) (Details) - Recurring - USD ($) $ in Millions	Jul. 31, 2025	Jan. 31, 2025
Fair Value, Equity Investments [Line Items]
Equity investments	$ 4,563	$ 3,041
Inputs, Level 1
Fair Value, Equity Investments [Line Items]
Equity investments	1,097	959
Inputs, Level 2
Fair Value, Equity Investments [Line Items]
Equity investments	$ 3,466	$ 2,082

X

- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482736/825-10-45-1A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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-Topic 210
-SubTopic 10
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-Section 45
-Paragraph 1
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-Publisher FASB
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