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Legal Matters (Details)
Dec. 09, 2021
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Jul. 16, 2020
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Feb. 11, 2020
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'631 Patent      
Loss Contingencies [Line Items]      
Number of IPR filed   2  
'226 Patent and '992 Patent | EYLEA Aflibercept Injection      
Loss Contingencies [Line Items]      
Number of ex parte reexamination requests | request     2
'338 Patent and '069 Patent | Apotex Inc.      
Loss Contingencies [Line Items]      
Number of IPR filed 2    
'338 Patent and '069 Patent | Celltrion, Inc.      
Loss Contingencies [Line Items]      
Number of IPR filed 2