ACQUISITIONS (Details) $ / shares in Units, shares in Millions | Jul. 01, 2016USD ($)payment | Dec. 30, 2015USD ($) | Sep. 29, 2015USD ($)oz | Jul. 28, 2015USD ($)oz$ / sharesshares | Jul. 20, 2015USD ($)oz | Jul. 09, 2015USD ($)kmoz | Jan. 08, 2015USD ($) | Oct. 20, 2014USD ($)itemoz | Sep. 30, 2014USD ($) | Jan. 12, 2010oz | Nov. 30, 2015USD ($) | Jun. 30, 2016USD ($) | Jun. 30, 2015USD ($) |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Carrying value | | | | | | | | | | | | $ 3,551,575,000 | $ 2,647,976,000 |
Stream and royalty interests, net | | | | | | | | | | | | 2,848,087,000 | 2,083,608,000 |
Chile | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Stream and royalty interests, net | | | | | | | | | | | | 823,525,000 | $ 653,019,000 |
Peak Gold | Royal Alaska | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Fair value of non-controlling interest | | | | | | | | | | | | 45,700,000 | |
Carmen de Andacollo | RG Chile | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Stream and royalty interests, net | | | | | | $ 207,500,000 | | | | | | | |
Carmen de Andacollo | Stream and royalty interests, net | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Carrying value | | | | | | $ 388,200,000 | | | | | | | |
Ilovica | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Total purchase amount | | | | | | | | $ 175,000,000 | | | | | |
Number of installments | item | | | | | | | | 2 | | | | | |
Feasibility costs | | | | | | | | $ 15,000,000 | | | | | |
Construction costs | | | | | | | | $ 160,000,000 | | | | | |
Ilovica | RGLD Gold | Initial Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | | | | | 25.00% | | | | | |
Gold delivered (in ounces) | oz | | | | | | | | 525,000 | | | | | |
Ilovica | RGLD Gold | Subsequent Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | | | | | 12.50% | | | | | |
Purchase price per ounce of gold as percentage of spot price at the time of delivery | | | | | | | | 25.00% | | | | | |
Ilovica | RGLD Gold | First Condition | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Feasibility costs | | | | | | | | $ 7,500,000 | | | | | |
Ilovica | RGLD Gold | Second Condition | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Feasibility costs | | | | | | | | $ 7,500,000 | | | | | |
Payment of aggregate pre-production commitment | | | | | | | | | | | $ 3,750,000 | | |
Remaining consideration payable | | | | | | | | | | | | 3,750,000 | |
Ilovica | Stream and royalty interests, net | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Cash paid for acquisition of royalty interests | | | | | | | | | | | | 11,250,000 | |
Tetlin | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Total purchase amount | | | | | | | | | $ 6,000,000 | | | | |
Tetlin | NSR Royalty Option 1 | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | | | | | | 2.00% | | | | |
Tetlin | NSR Royalty Option 2 | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | | | | | | 3.00% | | | | |
Tetlin | Royal Alaska | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Payments to acquire interest in joint venture | | | | | | | | | | | | $ 5,700,000 | |
Tetlin | Peak Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Membership interest controlled | | | | | | | | | | | | 11.00% | |
Tetlin | Peak Gold | Royal Alaska | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Payments to acquire interest in joint venture | | | | | | | $ 5,000,000 | | | | | | |
Minimum percentage of membership interest required to be manager | | | | | | | | | | | | 40.00% | |
Tetlin | Peak Gold | Royal Alaska | Maximum | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of membership interest that can be obtained | | | | | | | 40.00% | | | | | | |
Amount that can be contributed to purchase membership interest | | | | | | | $ 30,000,000 | | | | | | |
Tetlin | Peak Gold | Contango | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Membership interest controlled | | | | | | | 100.00% | | | | | | |
BGC | Pueblo Viejo | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Ownership interest (as a percent) | | | 60.00% | | | | | | | | | | |
Total purchase amount | | | $ 610,000,000 | | | | | | | | | | |
Purchase price per ounce of gold as percentage of spot price at the time of delivery | | | 60.00% | | | | | | | | | | |
Purchase price per ounce of silver as percentage of spot price at the time of delivery | | | 60.00% | | | | | | | | | | |
BGC | Pueblo Viejo | RGLD Gold | Initial Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | 7.50% | | | | | | | | | | |
Gold delivered (in ounces) | oz | | | 990,000 | | | | | | | | | | |
Percentage of silver royalty interests acquired | | | 75.00% | | | | | | | | | | |
Percentage of minimum silver recovery | | | 70.00% | | | | | | | | | | |
Maximum quantity of silver with specified purchase price (in ounces) | oz | | | 50,000,000 | | | | | | | | | | |
BGC | Pueblo Viejo | RGLD Gold | Subsequent Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | 3.75% | | | | | | | | | | |
Percentage of silver royalty interests acquired | | | 37.50% | | | | | | | | | | |
BGC | Pueblo Viejo | RGLD Gold | First Condition | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Gold delivered (in ounces) | oz | | | 550,000 | | | | | | | | | | |
Purchase price per ounce of gold as percentage of spot price at the time of delivery | | | 30.00% | | | | | | | | | | |
Maximum quantity of silver with specified purchase price (in ounces) | oz | | | 23,100,000 | | | | | | | | | | |
Purchase price per ounce of silver as percentage of spot price at the time of delivery | | | 30.00% | | | | | | | | | | |
BGC | Pueblo Viejo | Stream and royalty interests, net | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Total purchase amount | | | | | | | | | | | | $ 610,000,000 | |
Golden Star | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Gross loans | | | | $ 20,000,000 | | | | | | | | | |
Term of loan | | | | 4 years | | | | | | | | | |
Number of shares of common stock that can be purchased by the warrants | shares | | | | 5 | | | | | | | | | |
Grant date fair value on exercise of warrants | | | | $ 800,000 | | | | | | | | | |
Quarterly interest rate based on average gold rate divided by 10,000 | | | | 62.50% | | | | | | | | | |
Denominator used in calculation of quarterly interest rate | | | | $ 10,000 | | | | | | | | | |
Term of warrants | | | | 4 years | | | | | | | | | |
Exercise price of warrants | $ / shares | | | | $ 0.27 | | | | | | | | | |
Golden Star | Maximum | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Interest rate (as a percent) | | | | 11.50% | | | | | | | | | |
Golden Star | Wassa and Prestea | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Total purchase amount | | $ 145,000,000 | | $ 130,000,000 | | | | | | | | | |
Additional investment | | $ 15,000,000 | | | | | | | | | | | |
Gross loans | | | | $ 20,000,000 | | | | | | | | | |
Term of loan | | | | 4 years | | | | | | | | | |
Cash paid for acquisition of royalty interests | $ 20,000,000 | | | | | | | | | | | | |
Number of installments | payment | 2 | | | | | | | | | | | | |
First Installment Scheduled Payment | $ 20,000,000 | | | | | | | | | | | | |
Second Installment Scheduled Payment | $ 10,000,000 | | | | | | | | | | | | |
Golden Star | Wassa and Prestea | RGLD Gold | Initial Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | 9.25% | | | | | | | | | |
Gold delivered (in ounces) | oz | | | | 240,000 | | | | | | | | | |
Golden Star | Wassa and Prestea | RGLD Gold | Subsequent Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | 10.50% | | | | | | | | | |
Golden Star | Wassa and Prestea | RGLD Gold | First Condition | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Purchase price per ounce of gold as percentage of spot price at the time of delivery | | | | 20.00% | | | | | | | | | |
Golden Star | Wassa and Prestea | RGLD Gold | Subsequent Two Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | 5.50% | | | | | | | | | |
Golden Star | Wassa and Prestea | RGLD Gold | Second Condition | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Purchase price per ounce of gold as percentage of spot price at the time of delivery | | | | 30.00% | | | | | | | | | |
Golden Star | Wassa and Prestea | Stream and royalty interests, net | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Total purchase amount | | | | | | | | | | | | 95,000,000 | |
Cash paid for acquisition of royalty interests | | | | | | | | | | | | 95,000,000 | |
New Gold Inc | Rainy River | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Total purchase amount | | | | | $ 175,000,000 | | | | | | | | |
Cash paid for acquisition of royalty interests | | | | | 100,000,000 | | | | | | | | |
Installment payable upon meeting capital spending requirement | | | | | $ 75,000,000 | | | | | | | | |
Capital spending requirement (as a percent) | | | | | 60.00% | | | | | | | | |
New Gold Inc | Rainy River | RGLD Gold | Initial Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | | 6.50% | | | | | | | | |
Gold delivered (in ounces) | oz | | | | | 230,000 | | | | | | | | |
Percentage of silver royalty interests acquired | | | | | 60.00% | | | | | | | | |
Maximum quantity of silver with specified purchase price (in ounces) | oz | | | | | 3,100,000 | | | | | | | | |
New Gold Inc | Rainy River | RGLD Gold | Subsequent Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | | 3.25% | | | | | | | | |
Purchase price per ounce of gold as percentage of spot price at the time of delivery | | | | | 25.00% | | | | | | | | |
Percentage of silver royalty interests acquired | | | | | 30.00% | | | | | | | | |
Purchase price per ounce of silver as percentage of spot price at the time of delivery | | | | | 25.00% | | | | | | | | |
New Gold Inc | Rainy River | Stream and royalty interests, net | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Total purchase amount | | | | | | | | | | | | $ 100,000,000 | |
CMCA | Teck | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Ownership interest (as a percent) | | | | | | 90.00% | | | | | | | |
CMCA | Carmen de Andacollo | RGLD Gold | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Cash paid for acquisition of royalty interests | | | | | | $ 525,000,000 | | | | | | | |
Percentage of produced payable gold to be purchased have been delivered | | | | | | 100.00% | | | | | | | |
Percentage of produced payable gold to be purchased after 135,000 ounces have been delivered | | | | | | 50.00% | | | | | | | |
Fixed percentage of produced gold payable (as a percent) | | | | | | 89.00% | | | | | | | |
Purchase price per ounce as a percentage of monthly average gold price for the month preceding the delivery date | | | | | | 15.00% | | | | | | | |
CMCA | Carmen de Andacollo | RGLD Gold | Chile | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Maximum quantity of gold with specified purchase price (in ounces) | oz | | | | | | 900,000 | | | | | | | |
CMCA | Carmen de Andacollo | RGLD Gold | Maximum | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Area of mining to be eligible for concessions | km | | | | | | 1.5 | | | | | | | |
CMCA | Carmen de Andacollo | RG Chile | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Total purchase amount | | | | | | $ 345,000,000 | | | | | | | |
CMCA | Carmen de Andacollo | RG Chile | Initial Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | | | | | | | 75.00% | | | |
Gold delivered (in ounces) | oz | | | | | | | | | | 910,000 | | | |
CMCA | Carmen de Andacollo | RG Chile | Subsequent Royalty | | | | | | | | | | | | | |
Acquisition of Royalty Interest in Mineral Properties | | | | | | | | | | | | | |
Percentage of royalty interests acquired | | | | | | | | | | 50.00% | | | |