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Acquisitions and divestitures - Narrative: Proposed Acquisition of Horizon Therapeutics plc (Details) $ / shares in Units, $ in Billions	6 Months Ended
	Jun. 30, 2023 USD ($)	Dec. 12, 2022 program product $ / shares
Business Acquisition [Line Items]
Cash payment	$ 27.8
Horizon Therapeutics
Business Acquisition [Line Items]
Business acquisition, share price (in dollars per share) | $ / shares		$ 116.50
Cash payment	$ 27.8
Approved products | product		12
Development programs | program		20

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479907/805-20-50-5

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479581/805-30-50-1

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