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Intangible assets and goodwill - Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 889.5 $ 889.5
Accumulated Amortization 371.7 322.9
Net Carrying Amount $ 517.8 566.6
Products    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Useful Life in Years 13 years 6 months  
Gross Carrying Amount $ 855.4 855.4
Accumulated Amortization 337.6 288.8
Net Carrying Amount $ 517.8 566.6
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Useful Life in Years 0 years  
Gross Carrying Amount $ 28.6 28.6
Accumulated Amortization 28.6 28.6
Net Carrying Amount $ 0.0 0.0
CDMO    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Useful Life in Years 0 years  
Gross Carrying Amount $ 5.5 5.5
Accumulated Amortization 5.5 5.5
Net Carrying Amount $ 0.0 $ 0.0