Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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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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No definition available.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Fair value portion of notes payable.

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Fair value measurement - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Oct. 19, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net changes in valuations		$ 165	$ 65	$ (7)
Aggregate fair value of long-term debt, including current portion	$ 59,200	59,200	35,000
Carrying value of long-term debt, including current portion	64,613	$ 64,613	38,945
Teneobio, Inc.
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Maximum additional consideration due contingent on certain milestones					$ 1,600
Teneobio, Inc. \| AMG 340 development program liability
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net changes in valuations	$ 165
Other Noncurrent Assets \| BeiGene
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying and fair value of investment			4,200
Approximate carrying value of the company's equity method investment			$ 2,200