STREAM AND ROYALTY INTERESTS, NET - Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	$ 5,035,505	$ 4,985,510
Accumulated Depletion	(1,975,620)	(1,942,706)
Net	3,059,885	3,042,804
Total production stage stream and royalty interests
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	3,762,796	3,767,113
Accumulated Depletion	(1,975,620)	(1,942,706)
Net	1,787,176	1,824,407
Total production stage stream interests
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	2,472,689	2,472,689
Accumulated Depletion	(1,266,702)	(1,246,349)
Net	1,205,987	1,226,340
Total production stage stream interests | Mount Milligan
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	790,635	790,635
Accumulated Depletion	(468,140)	(462,412)
Net	322,495	328,223
Total production stage stream interests | Pueblo Viejo
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	610,404	610,404
Accumulated Depletion	(311,009)	(308,283)
Net	299,395	302,121
Total production stage stream interests | Andacollo
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	388,182	388,182
Accumulated Depletion	(179,451)	(177,059)
Net	208,731	211,123
Total production stage stream interests | Khoemacau
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	265,911	265,911
Accumulated Depletion	(61,848)	(58,043)
Net	204,063	207,868
Total production stage stream interests | Rainy River
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	175,727	175,727
Accumulated Depletion	(88,577)	(86,307)
Net	87,150	89,420
Total production stage stream interests | Other
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	241,830	241,830
Accumulated Depletion	(157,677)	(154,245)
Net	84,153	87,585
Total production stage royalty interests
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	1,290,107	1,294,424
Accumulated Depletion	(708,918)	(696,357)
Net	581,189	598,067
Total production stage royalty interests | Other
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	515,174	519,491
Accumulated Depletion	(420,803)	(418,648)
Net	94,371	100,843
Total production stage royalty interests | Cortez (Legacy Zone and CC Zone)
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	353,850	353,850
Accumulated Depletion	(85,901)	(81,845)
Net	267,949	272,005
Total production stage royalty interests | Voisey's Bay
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	205,724	205,724
Accumulated Depletion	(126,201)	(124,526)
Net	79,523	81,198
Total production stage royalty interests | Red Chris
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	116,187	116,187
Accumulated Depletion	(9,033)	(5,966)
Net	107,154	110,221
Total production stage royalty interests | Peñasquito
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	99,172	99,172
Accumulated Depletion	(66,980)	(65,372)
Net	32,192	33,800
Total development stage stream and royalty interests
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	170,824	166,387
Net	170,824	166,387
Development stage stream interests | Ilovica
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	12,038	12,038
Net	12,038	12,038
Development stage royalty interests | Other
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	25,576	21,133
Net	25,576	21,133
Development stage royalty interests | Cactus
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	55,122	55,128
Net	55,122	55,128
Development stage royalty interests | Back River
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	42,948	42,948
Net	42,948	42,948
Development stage royalty interests | La Fortuna
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	35,140	35,140
Net	35,140	35,140
Total exploration stage stream and royalty interests
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	1,101,885	1,052,010
Net	1,101,885	1,052,010
Exploration stage stream interests | Xavantina
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	64,794	14,792
Net	64,794	14,792
Exploration stage royalty interests | Other
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	115,311	115,438
Net	115,311	115,438
Exploration stage royalty interests | Cortez (Legacy Zone and CC Zone)
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	456,479	456,479
Net	456,479	456,479
Exploration stage royalty interests | Red Chris
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	48,895	48,895
Net	48,895	48,895
Exploration stage royalty interests | Great Bear
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	209,106	209,106
Net	209,106	209,106
Exploration stage royalty interests | Pascua-Lama
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	177,690	177,690
Net	177,690	177,690
Exploration stage royalty interests | Côté
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Line Items]
Cost	29,610	29,610
Net	$ 29,610	$ 29,610