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BASIS OF PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES (Schedule of Amortisation) (Details)
12 Months Ended
Dec. 31, 2020
Capitalised development costs [Member]  
Disclosure of intangible assets with indefinite useful life [line items]  
Estimated useful lives of intangible assets (In years) 15 years
Patents and licences [Member]  
Disclosure of intangible assets with indefinite useful life [line items]  
Estimated useful lives of intangible assets (In years) 6-15 years
Intangible assets [Member]  
Disclosure of intangible assets with indefinite useful life [line items]  
Estimated useful lives of intangible assets (In years) 6-15 years