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Collaboration Agreements And Business Development Activities - Research Collaborations and In-Licensing Arrangements Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023
Asset Acquisition [Line Items]
Research and development	$ 211,147	$ 232,570	$ 438,836	$ 466,816
Research Collaborations, In-Licensing Arrangements and Other Business Development Activities
Asset Acquisition [Line Items]
Research and development	5,800		28,600
Collaborative arrangement, maximum aggregate development milestone payments	509,600		509,600
Collaborative arrangement, maximum aggregate regulatory milestone payments	365,300		365,300
Collaborative arrangement, rights and obligations, maximum aggregate commercial milestone payments	$ 2,500,000		$ 2,500,000

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Collaborative Arrangement, Rights And Obligations, Maximum Aggregate Commercial Milestone Payments

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Collaborative Arrangement, Rights And Obligations, Maximum Aggregate Regulatory Milestone Payments

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 15
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480123/805-50-15-3

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Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 730
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482916/730-10-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 912
-SubTopic 730
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-Section 25
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479532/912-730-25-1

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