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12. FINANCIAL INSTRUMENTS (Details 10) - Foreign Exchange Risk [Member]
Dec. 31, 2019
ExchangeRate
UNITED STATES  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 4.0307
UNITED STATES | Probable Scenario [Member]  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 4.4946
UNITED STATES | Scenario 1 [Member]  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 5.0384
UNITED STATES | Scenario 2 [Member]  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 6.0461
Euro Member Countries, Euro  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 4.5305
Euro Member Countries, Euro | Probable Scenario [Member]  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 5.0038
Euro Member Countries, Euro | Scenario 1 [Member]  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 5.6631
Euro Member Countries, Euro | Scenario 2 [Member]  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 6.7958
USD x EUR  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 1.1234
USD x EUR | Probable Scenario [Member]  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 1.1122
USD x EUR | Scenario 1 [Member]  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 1.4043
USD x EUR | Scenario 2 [Member]  
Disclosure of detailed information about financial instruments [line items]  
Exchange rate 1.6851