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Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets, as follows: (Details)
 12 Months Ended
Dec. 31, 2021
Buildings [member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 25 years
Machinery And Equipments [Member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 10 years
Vehicles [member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 4 years
Fixtures and fittings [member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 10 years
It Equipment [Member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 5 years
Library Books [Member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 10 years
Laboratories And Clinics [Member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 10 years
Leasehold improvements [member]  
IfrsStatementLineItems [Line Items]  
Useful lives of assets 20 years