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Basis of preparation of the interim financial statements (Tables)
6 Months Ended
Jun. 30, 2021
Basis of preparation of the interim financial statements  
Schedule of exchange rates used to translate its foreign operations

Average rate

Closing rate

Three-month period ended

Six-month period ended

June 30, 2021

December 31, 2020

June 30, 2021

June 30, 2020

June 30, 2021

June 30, 2020

United States dollar

5.0022

5.1967

5.2907

5.3854

5.3862

4.9218

Canadian dollar ("CAD")

4.0334

4.0771

4.3096

3.8882

4.3209

3.5992

Euro ("EUR")

5.9276

6.3779

6.3789

5.9279

6.4902

5.4211