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Asset Acquisition, Liabilities Assumed

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Equity Method Investment, Additional Interest Acquired, Shares

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Equity Method Investment, Additional Investment

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Equity Method Investment, Option Fee

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Equity Method Investment, Ownership Interest, Shares

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Number Of Designees On Board Of Directors

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Payments For Asset Acquisitions

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Potential Future Milestone Payments, Maximum

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of consideration transferred in asset acquisition. Includes, but is not limited to, cash, liability incurred by acquirer, and equity interest issued by acquirer.

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

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The amount of the write-off for research and development assets that were acquired in a transaction other than a business combination.

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ACQUISITIONS, COLLABORATIONS AND OTHER ARRANGEMENTS (Details) shares in Millions, $ in Millions		1 Months Ended		3 Months Ended		12 Months Ended
	Feb. 22, 2023 USD ($)	Mar. 31, 2024 USD ($)	Jan. 31, 2024 USD ($) designee shares	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Business Combination, Separately Recognized Transactions [Line Items]
Acquired in-process research and development expenses				$ 4,131	$ 481
Arcus
Business Combination, Separately Recognized Transactions [Line Items]
Ownership interest, shares (in shares) \| shares			30.1
Ownership percentage			33.00%
Arcus
Business Combination, Separately Recognized Transactions [Line Items]
Additional interest acquired, shares (in shares) \| shares			15.2
Additional equity investment			$ 320
Option fee			$ 100
Number of designees \| designee			3
Arcus \| Prepaid and other current assets
Business Combination, Separately Recognized Transactions [Line Items]
Additional equity investment			$ 233
Arcus \| Other (Income) Expense
Business Combination, Separately Recognized Transactions [Line Items]
Additional equity investment			$ 87
CymaBay
Business Combination, Separately Recognized Transactions [Line Items]
Total consideration transferred		$ 3,900
Acquired in-process research and development expenses				3,900
Asset acquisition, assets acquired		263		263
Asset acquisition, liabilities assumed		$ 228		228
Share-based compensation expense				133
CymaBay \| Research and development expenses
Business Combination, Separately Recognized Transactions [Line Items]
Share-based compensation expense				67
CymaBay \| Selling, general and administrative expenses
Business Combination, Separately Recognized Transactions [Line Items]
Share-based compensation expense				$ 67
Tmunity Therapeutics
Business Combination, Separately Recognized Transactions [Line Items]
Acquired in-process research and development expenses					244
Cash consideration	$ 300
Tmunity Therapeutics \| Tmunity And University Of Pennsylvania
Business Combination, Separately Recognized Transactions [Line Items]
Acquired in-process research and development expenses						$ 25
Maximum potential future milestone payments					$ 1,000