v3.25.2

Investments - Neumora Therapeutics, Inc. (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Equity securities	$ 4,898,000,000		$ 4,898,000,000		$ 4,188,000,000
Unrealized gains (losses) on equity securities	$ 0	$ 0	$ 0	$ 0
Neumora Therapeutics, Inc.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	21.90%		21.90%		21.90%
Equity securities	$ 26,000,000		$ 26,000,000		$ 375,000,000
Unrealized gains (losses) on equity securities	$ (9,000,000)	$ (138,000,000)	$ (349,000,000)	$ (255,000,000)
Neumora Therapeutics, Inc. \| Maximum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	5.00%		5.00%
Neumora Therapeutics, Inc. \| Minimum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	10.00%		10.00%

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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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.

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AMGEN INC 10-Q