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Significant Accounting Policies - Intangible assets (Details)
€ in Thousands
12 Months Ended
Dec. 31, 2019
EUR (€)
Other Intangible Assets  
Impairment loss € 0
Development costs  
Other Intangible Assets  
Amortization rates 10.00%
Computer software  
Other Intangible Assets  
Amortization rates 33.00%
Minimum | Concessions, patents, licenses brands & similar  
Other Intangible Assets  
Amortization rates 4.00%
Minimum | Currently marketed products  
Other Intangible Assets  
Amortization rates 3.00%
Maximum | Concessions, patents, licenses brands & similar  
Other Intangible Assets  
Amortization rates 20.00%
Maximum | Currently marketed products  
Other Intangible Assets  
Amortization rates 10.00%