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Collaborations and Other Arrangements (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Royalty Agreement Terms | Olumiant®
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaborative arrangement, rights and obligations percent (up to)	20.00%
Milestone Payments, Sales-based | Olumiant®
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential achievements	$ 100.0
Milestone Payments, Sales-based | Ebglyss
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential achievements	1,250.0
Milestone Payments, Sales-based | Ebglyss | Roche
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential achievements	1,030.0
Milestone Payments, Sales-based | Orforglipron | Chugai
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential achievements	250.0
Milestone Payments, Development and Regulatory | Ebglyss | Roche
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential achievements	115.0
Milestone Payments, Development and Regulatory | Orforglipron | Chugai
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Potential achievements	$ 140.0

X

- Definition

Description of rights and obligations under the collaborative arrangements, including but not limited to - percent share in various revenues and costs, percent interest earned on related party notes.

+ References

No definition available.

+ Details

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- Definition

Terms or rights and obligations under collaborative arrangements.

+ References

No definition available.

+ Details

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X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479402/808-10-50-1

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