REVENUE - Metal Disaggregation (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue
Revenue	$ 342,952	$ 603,206	$ 653,568	$ 615,856	$ 498,819
Stream interests
Disaggregation of Revenue
Revenue	226,551	417,793		423,989	359,868
Stream interests | Gold
Disaggregation of Revenue
Revenue	165,031	308,302		323,980	294,490
Stream interests | Silver
Disaggregation of Revenue
Revenue	30,576	50,591		43,281	32,744
Stream interests | Copper
Disaggregation of Revenue
Revenue	30,944	58,900		56,728	32,634
Royalty interests
Disaggregation of Revenue
Revenue	116,401	185,413		191,867	138,951
Royalty interests | Gold
Disaggregation of Revenue
Revenue	85,151	131,014		131,784	98,153
Royalty interests | Silver
Disaggregation of Revenue
Revenue	8,253	13,690		16,198	9,996
Royalty interests | Copper
Disaggregation of Revenue
Revenue	9,511	15,019		16,448	13,528
Royalty interests | Other
Disaggregation of Revenue
Revenue	$ 13,486	$ 25,690		$ 27,437	$ 17,274