SEGMENT INFORMATION (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Long Lived Assets and Pre-Tax Income by Geographical Information
Number of reportable segments | segment	2
Stream and royalty interests, net (Note 5)	$ 8,583,875	$ 3,042,804
Revenue	1,030,471	719,395	$ 605,717
Cost of sales	130,926	97,514	90,523
Production taxes	8,605	6,622	7,294
Depletion	176,610	144,085	164,506
Total segment gross profit	714,330	471,174	343,394
Revenue Benchmark | Customer Concentration Risk | Bank of Montreal
Long Lived Assets and Pre-Tax Income by Geographical Information
Revenue	$ 386,900	$ 248,700	$ 311,600
Percentage of total revenue	38.00%	35.00%	51.00%
Revenue Benchmark | Customer Concentration Risk | StoneX
Long Lived Assets and Pre-Tax Income by Geographical Information
Revenue	$ 272,500	$ 204,800	$ 61,100
Percentage of total revenue	26.00%	28.00%	10.00%
North America
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	$ 3,049,731	$ 2,239,912
EMEA
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	2,580,184	249,386
South and Central America
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	2,891,831	534,241
Australia Pacific
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	62,129	19,265
Stream interest
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	4,544,742	1,253,170
Revenue	686,472	483,294	$ 418,280
Cost of sales	130,926	97,514	90,523
Production taxes	0	0	0
Depletion	112,858	102,800	121,121
Total segment gross profit	442,688	282,980	206,636
Stream interest | North America
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	1,214,810	719,765
Revenue	440,738	314,860	273,208
Stream interest | EMEA
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	2,270,717	249,065
Revenue	137,281	82,132	70,757
Stream interest | South and Central America
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	1,045,620	284,340
Revenue	107,444	86,302	74,315
Stream interest | Australia Pacific
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	13,595	0
Revenue	1,009	0	0
Royalty interest
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	4,039,133	1,789,634
Revenue	343,999	236,101	187,437
Cost of sales	0	0	0
Production taxes	8,605	6,622	7,294
Depletion	63,752	41,285	43,385
Total segment gross profit	271,642	188,194	136,758
Royalty interest | North America
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	1,834,921	1,520,147
Revenue	263,332	192,999	162,155
Royalty interest | EMEA
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	309,467	321
Revenue	2,199	0	535
Royalty interest | South and Central America
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	1,846,211	249,901
Revenue	38,119	14,136	5,736
Royalty interest | Australia Pacific
Long Lived Assets and Pre-Tax Income by Geographical Information
Stream and royalty interests, net (Note 5)	48,534	19,265
Revenue	$ 40,349	$ 28,966	$ 19,011