Consolidated Statements of Operations and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue (Note 8)	$ 719,395	$ 605,717	$ 603,206
Costs and expenses
Cost of sales (excludes depreciation, depletion and amortization)	97,514	90,523	94,642
General and administrative	40,934	39,761	34,612
Production taxes	6,622	7,294	7,021
Depreciation, depletion and amortization	144,426	164,937	178,935
Impairment of royalty interests	0	0	4,287
Total costs and expenses	289,496	302,515	319,497
Operating income	429,899	303,202	283,709
Fair value changes in equity securities	(66)	(147)	(1,503)
Interest and other income	6,008	9,952	7,832
Interest and other expense	(9,749)	(30,867)	(17,170)
Income before income taxes	426,092	282,140	272,868
Income tax expense (Note 11)	(93,613)	(42,008)	(32,926)
Net income and comprehensive income	332,479	240,132	239,942
Net income and comprehensive income attributable to non-controlling interests	(456)	(692)	(960)
Net income and comprehensive income attributable to Royal Gold common stockholders	$ 332,023	$ 239,440	$ 238,982
Net income per share attributable to Royal Gold common stockholders:
Basic earnings per share (in dollars per share)	$ 5.04	$ 3.64	$ 3.64
Basic weighted average shares outstanding (in shares)	65,662,185	65,613,002	65,576,995
Diluted earnings per share (in dollars per share)	$ 5.04	$ 3.63	$ 3.63
Diluted weighted average shares outstanding (in shares)	65,776,834	65,739,110	65,661,748
Cash dividends declared per common share (in dollars per share)	$ 1.650	$ 1.525	$ 1.425