REVENUE - Schedule of Metal Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue
Total revenue	$ 450,539	$ 209,643	$ 919,664	$ 403,080
Stream revenue
Disaggregation of Revenue
Total revenue	310,964	133,191	623,741	255,673
Royalty revenue
Disaggregation of Revenue
Total revenue	139,575	76,452	295,923	147,407
Gold | Stream revenue
Disaggregation of Revenue
Total revenue	248,924	104,454	485,370	199,016
Gold | Royalty revenue
Disaggregation of Revenue
Total revenue	94,932	59,862	192,395	111,026
Silver | Stream revenue
Disaggregation of Revenue
Total revenue	44,799	19,047	97,533	37,746
Silver | Royalty revenue
Disaggregation of Revenue
Total revenue	10,793	5,017	31,072	9,917
Copper | Stream revenue
Disaggregation of Revenue
Total revenue	15,174	9,690	36,873	18,911
Copper | Royalty revenue
Disaggregation of Revenue
Total revenue	22,679	5,074	47,650	12,665
Zinc | Stream revenue
Disaggregation of Revenue
Total revenue	2,067	0	3,965	0
Other | Royalty revenue
Disaggregation of Revenue
Total revenue	$ 11,171	$ 6,499	$ 24,806	$ 13,799