STREAM AND ROYALTY INTERESTS, NET - Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	$ 4,930,378	$ 4,874,194
Accumulated Depletion	(1,909,054)	(1,798,620)
Net	3,021,324	3,075,574
Total production stage stream and royalty interests
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	3,752,568	3,687,394
Accumulated Depletion	(1,909,054)	(1,798,620)
Net	1,843,514	1,888,774
Total production stage stream interests
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	2,467,918	2,463,562
Accumulated Depletion	(1,223,748)	(1,143,549)
Net	1,244,170	1,320,013
Total production stage stream interests | Mount Milligan
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	790,635	790,635
Accumulated Depletion	(455,549)	(430,106)
Net	335,086	360,529
Total production stage stream interests | Pueblo Viejo
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	610,404	610,404
Accumulated Depletion	(306,451)	(299,354)
Net	303,953	311,050
Total production stage stream interests | Andacollo
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	388,182	388,182
Accumulated Depletion	(173,673)	(165,553)
Net	214,509	222,629
Total production stage stream interests | Khoemacau
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	265,911	265,911
Accumulated Depletion	(55,365)	(41,635)
Net	210,546	224,276
Total production stage stream interests | Rainy River
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	175,727	175,727
Accumulated Depletion	(82,771)	(74,858)
Net	92,956	100,869
Total production stage stream interests | Other
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	237,059	232,703
Accumulated Depletion	(149,939)	(132,043)
Net	87,120	100,660
Total production stage royalty interests
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	1,284,650	1,223,832
Accumulated Depletion	(685,306)	(655,071)
Net	599,344	568,761
Total production stage royalty interests | Other
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	509,717	448,899
Accumulated Depletion	(416,069)	(408,522)
Net	93,648	40,377
Total production stage royalty interests | Cortez (Legacy Zone and CC Zone)
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	353,850	353,850
Accumulated Depletion	(76,378)	(61,891)
Net	277,472	291,959
Total production stage royalty interests | Voisey's Bay
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	205,724	205,724
Accumulated Depletion	(123,350)	(121,000)
Net	82,374	84,724
Total production stage royalty interests | Red Chris
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	116,187	116,187
Accumulated Depletion	(5,966)	(3,758)
Net	110,221	112,429
Total production stage royalty interests | Peñasquito
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	99,172	99,172
Accumulated Depletion	(63,543)	(59,900)
Net	35,629	39,272
Total development stage stream and royalty interests
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	120,970
Net	120,970
Development stage stream interests | Other
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	12,038	12,038
Net	12,038	12,038
Development stage royalty interests
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost		138,591
Net		138,591
Development stage royalty interests | Other
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	30,844	45,992
Net	30,844	45,992
Development stage royalty interests | Back River
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	42,948
Net	42,948
Development stage royalty interests | La Fortuna
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	35,140	35,140
Net	35,140	35,140
Development stage royalty interests | Côté
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost		45,421
Net		45,421
Total exploration stage stream and royalty interests
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	1,056,840	1,048,209
Net	1,056,840	1,048,209
Exploration stage stream interests | Xavantina
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	19,563	19,565
Net	19,563	19,565
Exploration stage royalty interests | Other
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	115,497	106,864
Net	115,497	106,864
Exploration stage royalty interests | Cortez (Legacy Zone and CC Zone)
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	456,479	456,479
Net	456,479	456,479
Exploration stage royalty interests | Red Chris
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	48,895	48,895
Net	48,895	48,895
Exploration stage royalty interests | Great Bear
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	209,106	209,106
Net	209,106	209,106
Exploration stage royalty interests | Pascua-Lama
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	177,690	177,690
Net	177,690	177,690
Exploration stage royalty interests | Côté
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Cost	29,610	29,610
Net	$ 29,610	$ 29,610