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The amount of acquisition cost of a business combination allocated to mineral rights for acquired entities in the mining industry.

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Describe the conversion features of common stock if such stock is convertible. That is, shares of common stock into which another convertible security was converted, or shares of common stock into which another class of common stock was converted.

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ACQUISITION OF INTERNATIONAL ROYALTY CORPORATION (Details) (USD $)	12 Months Ended		4 Months Ended	12 Months Ended			1 Months Ended		1 Months Ended				12 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2010 International Royalty Corporation	Jun. 30, 2010 International Royalty Corporation	Jun. 30, 2009 International Royalty Corporation	Feb. 22, 2010 International Royalty Corporation	Feb. 28, 2010 International Royalty Corporation Common Shares	Feb. 22, 2010 International Royalty Corporation Common Shares	Feb. 28, 2010 International Royalty Corporation Exchangeable Shares	Feb. 22, 2010 International Royalty Corporation Exchangeable Shares	Jun. 30, 2010 International Royalty Corporation Purchase price adjustments	Jun. 30, 2010 International Royalty Corporation Final purchase price allocation	Jun. 30, 2011 Exchangeable Shares	Jun. 30, 2011 Labrador Nickel Royalty Limited Partnership (LNRLP)	Feb. 28, 2010 Altius	Jun. 30, 2011 Altius	Feb. 28, 2010 Voisey's Bay Holding Corporation	Jun. 30, 2011 Voisey's Bay Holding Corporation
Purchase price for the International Royalty Corporation (the ''IRC Transaction'')
Cash paid						$ 350,000,000
Number of common or exchangeable shares issued (in shares)							5,234,086		1,806,649
Value of common or exchangeable shares issued on date of acquisition								230,400,000		79,500,000
Exchange basis for conversion of exchangeable shares of RG Exchangeco into shares of Royal Gold common stock	one-for-one basis												one-for-one basis
Fair values of the assets acquired and liabilities assumed
Purchase price			659,871,000	659,871,000								659,871,000
Current assets			83,720,000	83,720,000							1,069,000	84,789,000
Royalty interests in mineral properties			774,291,000	774,291,000							8,816,000	783,107,000
Other assets			14,304,000	14,304,000							(4,911,000)	9,393,000
Current liabilities			(10,839,000)	(10,839,000)							(974,000)	(11,813,000)
Senior secured debentures			(28,769,000)	(28,769,000)								(28,769,000)
Net deferred tax liabilities			(140,891,000)	(140,891,000)							(3,395,000)	(144,286,000)
Uncertain tax positions			(8,362,000)	(8,362,000)							(605,000)	(8,967,000)
Other liabilities			(2,878,000)	(2,878,000)								(2,878,000)
Non-controlling interest			(20,705,000)	(20,705,000)								(20,705,000)
Total allocated purchase price			659,871,000	659,871,000								659,871,000
Acquisition
Transaction costs			8,600,000	8,600,000
Severance related payments		19,404,000		10,800,000
Percentage of ownership interest held in Labrador Nickel Royalty Limited Partnership ("LNRLP") (as a percent)														90.00%	10.00%	10.00%	0.01%
Percentage of the Voiseys Bay Net Smelter Return (NSR) royalty owned (as a percent)																		100.00%
Unaudited pro forma information
Royalty revenues				152,716,000	113,259,000
Net income (loss) available to Royal Gold common stockholders				(434,000)	29,248,000
Royalty revenue recorded on the Companys consolidated statements of operations and comprehensive income			9,000,000
Transaction costs and severance related payments				$ 19,400,000	$ 19,400,000