STREAM AND ROYALTY INTERESTS, NET - Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Cost	$ 4,871,715	$ 4,875,802
Accumulated Depletion	(1,680,330)	(1,634,113)
Impairments		(4,287)
Net	3,191,385	3,237,402
Production stage stream and royalty interests
Cost	3,686,177	3,668,825
Accumulated Depletion	(1,680,330)	(1,634,113)
Net	2,005,847	2,034,712
Production stage stream interests
Cost	2,463,562	2,446,435
Accumulated Depletion	(1,056,180)	(1,022,428)
Net	1,407,382	1,424,007
Production stage stream interests | Mt. Milligan
Cost	790,635	790,635
Accumulated Depletion	(404,090)	(392,804)
Net	386,545	397,831
Production stage stream interests | Pueblo Viejo
Cost	610,404	610,404
Accumulated Depletion	(292,501)	(289,537)
Net	317,903	320,867
Production stage stream interests | Andacollo
Cost	388,182	388,182
Accumulated Depletion	(155,619)	(151,870)
Net	232,563	236,312
Production stage stream interests | Khoemacau
Cost	265,911	265,911
Accumulated Depletion	(22,782)	(15,905)
Net	243,129	250,006
Production stage stream interests | Rainy River
Cost	175,727	175,727
Accumulated Depletion	(65,262)	(61,601)
Net	110,465	114,126
Production stage stream interests | Other interest
Cost	232,703	215,576
Accumulated Depletion	(115,926)	(110,711)
Net	116,777	104,865
Production stage royalty interests
Cost	1,222,615	1,222,390
Accumulated Depletion	(624,150)	(611,685)
Net	598,465	610,705
Production stage royalty interests | Cortez
Cost	353,844	353,772
Accumulated Depletion	(41,853)	(35,276)
Net	311,991	318,496
Production stage royalty interests | Voisey's Bay
Cost	205,724	205,724
Accumulated Depletion	(118,985)	(118,327)
Net	86,739	87,397
Production stage royalty interests | Red Chris
Cost	116,187	116,187
Accumulated Depletion	(3,758)	(1,797)
Net	112,429	114,390
Production stage royalty interests | Penasquito
Cost	99,172	99,172
Accumulated Depletion	(58,620)	(57,772)
Net	40,552	41,400
Production stage royalty interests | Other interest
Cost	447,688	447,535
Accumulated Depletion	(400,934)	(398,513)
Net	46,754	49,022
Development stage stream and royalty interests
Cost	138,969	131,684
Net	138,969	131,684
Development stage stream interests | Other interest
Cost	12,038	12,038
Net	12,038	12,038
Development stage royalty interests | Cote
Cost	45,421	45,421
Net	45,421	45,421
Development stage royalty interests | Other interest
Cost	81,510	74,225
Net	81,510	74,225
Exploration stage stream and royalty interests
Cost	1,046,569	1,075,293
Impairments		(4,287)
Net	1,046,569	1,071,006
Exploration stage stream interests | Xavantina (formerly NX Gold)
Cost	17,126	34,253
Net	17,126	34,253
Exploration stage royalty interests | Cortez
Cost	456,444	456,318
Net	456,444	456,318
Exploration stage royalty interests | Red Chris
Cost	48,895	48,895
Net	48,895	48,895
Exploration stage royalty interests | Cote
Cost	29,610	29,610
Net	29,610	29,610
Exploration stage royalty interests | Great Bear
Cost	209,106	209,106
Net	209,106	209,106
Exploration stage royalty interests | Pascua - Lama
Cost	177,690	177,690
Net	177,690	177,690
Exploration stage royalty interests | Other interest
Cost	107,698	119,421
Impairments		(4,287)
Net	$ 107,698	$ 115,134