XML 104 R55.htm IDEA: XBRL DOCUMENT v3.21.1
Significant Accounting Policies - Useful Lives Applied to the Group's Intangible Assets (Details)
 12 Months Ended
Dec. 31, 2020
Minimum | Intellectual Property Rights  
Disclosure Of Intangible Assets [Line Items]  
Intangible assets, Useful life (Years) 10 years
Minimum | Licenses  
Disclosure Of Intangible Assets [Line Items]  
Intangible assets, Useful life (Years) 3 years
Minimum | Software  
Disclosure Of Intangible Assets [Line Items]  
Intangible assets, Useful life (Years) 3 years
Maximum | Intellectual Property Rights  
Disclosure Of Intangible Assets [Line Items]  
Intangible assets, Useful life (Years) 20 years
Maximum | Licenses  
Disclosure Of Intangible Assets [Line Items]  
Intangible assets, Useful life (Years) 20 years
Maximum | Software  
Disclosure Of Intangible Assets [Line Items]  
Intangible assets, Useful life (Years) 8 years