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Collaboration Agreements And Business Development Activities - Ipsen Collaboration Narrative (Details) $ in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jan. 01, 2021 USD ($) | Dec. 31, 2016 USD ($) | Dec. 30, 2022 CAD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Milestone payments earned to date | $ 489.5 |  |  |  |
Collaboration agreement percent of royalty on net sale | 3.00% |  |  |  |
Remaining performance obligation | $ 73.0 |  |  |  |
Collaborative arrangement with Ipsen |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Collaboration period to achieve specified levels of commercial performance | 10 years |  |  |  |
Upfront payments |  |  |  | $ 210.0 |
Milestone payments earned | $ 27.0 | $ 112.5 | $ 20.0 |  |
Eligible payment from collaboration for development and regulatory milestone achievement under collaborations agreement | 19.5 |  |  |  |
Maximum amount eligible for commercial milestones under collaborations agreement | $ 350.0 |  |  |  | $ 26.5
Research and development arrangement performed for others, reimbursement for costs incurred, percent | 35.00% |  |  |  |
Commercial sales milestone | $ 25.8 |  |  |  |
Regulatory milestone | 27.0 |  |  |  |
Remaining performance obligation | $ 35.4 |  |  |  |
Collaborative arrangement with Ipsen | Minimum | Final tier |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Percent of royalty on net sale | 22.00% |  |  |  |
Collaborative arrangement with Ipsen | Maximum | Final tier |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Percent of royalty on net sale | 26.00% |  |  |  |
Collaborative arrangement with Ipsen | Collaboration services revenues |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Cumulative catch-up revenue recognized |  | $ 43.2 |  |  |

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