STREAM AND ROYALTY INTERESTS (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016
Stream and royalty interests
Cost	$ 3,510,857	$ 3,551,575
Accumulated Depletion	(612,763)	(607,370)
Impairments		(96,118)
Net	2,898,094	2,848,087
Production stage stream interests:
Stream and royalty interests
Cost	1,898,070	1,878,045
Accumulated Depletion	(151,160)	(122,064)
Net	1,746,910	1,755,981
Production stage stream interests: | Mount Milligan
Stream and royalty interests
Cost	783,046	783,046
Accumulated Depletion	(84,689)	(74,060)
Net	698,357	708,986
Production stage stream interests: | Pueblo Viejo
Stream and royalty interests
Cost	610,404	610,404
Accumulated Depletion	(31,543)	(21,902)
Net	578,861	588,502
Production stage stream interests: | Andacollo
Stream and royalty interests
Cost	388,182	388,182
Accumulated Depletion	(24,913)	(18,286)
Net	363,269	369,896
Production stage stream interests: | Wassa and Prestea
Stream and royalty interests
Cost	116,438	96,413
Accumulated Depletion	(10,015)	(7,816)
Net	106,423	88,597
Production stage royalty interests
Stream and royalty interests
Cost	844,021	881,873
Accumulated Depletion	(461,603)	(485,153)
Impairments		(18,605)
Net	382,418	378,115
Production stage royalty interests | Voisey's Bay
Stream and royalty interests
Cost	205,724	205,724
Accumulated Depletion	(85,671)	(85,671)
Net	120,053	120,053
Production stage royalty interests | Penasquito
Stream and royalty interests
Cost	99,172	99,172
Accumulated Depletion	(30,911)	(29,898)
Net	68,261	69,274
Production stage royalty interests | Holt
Stream and royalty interests
Cost	34,612	34,612
Accumulated Depletion	(17,917)	(17,124)
Net	16,695	17,488
Production stage royalty interests | Cortez
Stream and royalty interests
Cost	20,870	10,630
Accumulated Depletion	(10,175)	(10,000)
Net	10,695	630
Production stage royalty interests | Other
Stream and royalty interests
Cost	483,643	531,735
Accumulated Depletion	(316,929)	(342,460)
Impairments		(18,605)
Net	166,714	170,670
Total production stage stream and royalty interests
Stream and royalty interests
Cost	2,742,091	2,759,918
Accumulated Depletion	(612,763)	(607,217)
Impairments		(18,605)
Net	2,129,328	2,134,096
Development stage stream interests
Stream and royalty interests
Cost	112,749	188,589
Accumulated Depletion		(153)
Impairments		(75,702)
Net	112,749	112,734
Development stage stream interests | Rainy River
Stream and royalty interests
Cost	100,718	100,706
Net	100,718	100,706
Development stage stream interests | Other
Stream and royalty interests
Cost	12,031	87,883
Accumulated Depletion		(153)
Impairments		(75,702)
Net	12,031	12,028
Development stage royalty interests
Stream and royalty interests
Cost	504,271	447,071
Net	504,271	447,071
Development stage royalty interests | Pascua-Lama
Stream and royalty interests
Cost	380,657	380,657
Net	380,657	380,657
Development stage royalty interests | Cortez
Stream and royalty interests
Cost	59,803
Net	59,803
Development stage royalty interests | Other
Stream and royalty interests
Cost	63,811	66,414
Net	63,811	66,414
Total development stage stream and royalty interests
Stream and royalty interests
Cost	617,020	635,660
Accumulated Depletion		(153)
Impairments		(75,702)
Net	617,020	559,805
Total exploration stage royalty interests
Stream and royalty interests
Cost	151,746	155,997
Impairments		(1,811)
Net	$ 151,746	$ 154,186