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Collaboration Agreements And Business Development Activities - Ipsen Collaboration Narrative (Details)
$ in Millions, $ in Millions
12 Months Ended
Jan. 03, 2025
USD ($)
Jan. 03, 2025
CAD ($)
Dec. 30, 2022
USD ($)
Dec. 31, 2016
USD ($)
Jan. 03, 2025
CAD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Collaboration agreement percent of royalty on net sale 3.00% 3.00%      
Collaborative arrangement with Ipsen          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Collaboration period to achieve specified levels of commercial performance 10 years 10 years      
Upfront payments       $ 210.0  
Milestone payments earned to date $ 654.2        
Milestone payments earned 164.7   $ 27.0    
Eligible payment from collaboration for development and regulatory milestone achievement under collaborations agreement 7.0        
Maximum amount eligible for commercial milestones under collaborations agreement $ 200.0       $ 23.5
Research and development arrangement performed for others, reimbursement for costs incurred, percent 35.00% 35.00%      
Revenue from contract with customer, commercial sales milestone $ 2.2        
Cumulative net sales milestone 600.0 $ 30.0      
Revenue from contract with customer, regulatory milestone 12.5        
Remaining performance obligation 25.8        
Collaborative arrangement with Ipsen | License revenues          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Revenue from contract with customer, commercial sales milestone 150.0        
Revenue from contract with customer, regulatory milestone upon submission of application 10.8        
Collaborative arrangement with Ipsen | Collaboration services revenues          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Revenue from contract with customer, regulatory milestone upon submission of application $ 0.6        
Collaborative arrangement with Ipsen | Minimum | Final tier          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Percent of royalty on net sale 22.00% 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% 26.00%