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GENERAL AND ADMINSTRATIVE EXPENSES (Tables)
12 Months Ended
Dec. 31, 2021
Analysis of income and expense [abstract]  
Disclosure of general and administrative expenses
Years ended December 31,
Notes20212020
Salaries$22.8 $24.2 
Directors' fees and expenses1.1 1.1 
Professional and consulting fees8.3 5.2 
Other administration costs4.5 2.2 
Share-based compensation6.1 10.7 
(Gain) loss on cash flow hedges30(c)(ii)(2.6)1.8 
Depreciation expense1.8 1.6 
$42.0 $46.8