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REVENUE (Details) | 6 Months Ended
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Jun. 30, 2022 segment
Number of reportable segments | 2
Minimum |
Average sale price determination period | 10 days
Maximum |
Average sale price determination period | 3 months

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- Definition Represents the period of consecutive trading days under the spot rate forward contract in which the sale price is determined on the daily average spot price. + References No definition available. + Details
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Namespace Prefix: | rgld_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8672-108599 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
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- Details
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