COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		0 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Sep. 30, 2013 Canadian Minerals Partnership	Sep. 30, 2013 Altius	Oct. 16, 2009 Voisey's Bay Holding Corporation	Sep. 30, 2013 Voisey's Bay Holding Corporation	Sep. 30, 2013 Mt. Milligan	Sep. 30, 2013 Mt. Milligan	Sep. 30, 2013 Tulsequah
Commitments and Contingencies
Final commitment payment made					$ 12.9
Remaining commitment amount						0	50
Percentage of ownership interest held in Labrador Nickel Royalty Limited Partnership ("LNRLP")	89.99%	10.00%		0.01%
Minimum damage amount claimed by Labrador Nickel Royalty Limited Partnership ("LNRLP")			$ 29