SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND RECENTLY ADOPTED AND RECENTLY ISSUED ACCOUNTING STANDARDS (Details) $ in Millions	12 Months Ended
	Jun. 30, 2020 USD ($) $ / oz	Jun. 30, 2019
Minimum
Term of the contract	10 days
Maximum
Term of the contract	3 months
Mount Milligan
Cash payment for each ounce of gold (in dollars per ounce) | $ / oz	435
Peak Gold
Fair value of the company | $	$ 45.7
Membership interest	40.00%	40.00%