Annual report pursuant to Section 13 and 15(d)

Summary of significant accounting policies - Property, Plant and Equipment (Details)

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Summary of significant accounting policies - Property, Plant and Equipment (Details)
12 Months Ended
Dec. 31, 2021
Minimum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, estimated useful lives 3 years
Maximum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, estimated useful lives 15 years