Represents the option to acquire a percentage of royalty pursuant to the agreement.

No definition available.

Name:	rgld_OptionAgreementOptionToAcquireRoyaltyPercentage
Namespace Prefix:	rgld_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of gross royalty.

+ References

No definition available.

+ Details

Name:	rgld_PercentageOfGrossRoyalty
Namespace Prefix:	rgld_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents percentage of net smelter return.

+ References

No definition available.

+ Details

Name:	rgld_PercentageOfNetSmelterReturn
Namespace Prefix:	rgld_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the production payable (as a percent)

+ References

No definition available.

+ Details

Name:	rgld_ProductionPayablePercentage
Namespace Prefix:	rgld_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The quantity of gold attributable to royalty.

+ References

No definition available.

+ Details

Name:	rgld_QuantityOfGoldAttributableToRoyalty
Namespace Prefix:	rgld_
Data Type:	dtr-types:massItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of royalty payable

+ References

No definition available.

+ Details

Name:	rgld_RoyaltyPayableTerm
Namespace Prefix:	rgld_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The threshold per agreement upon which there is a spot price rate adjustment.

+ References

No definition available.

+ Details

Name:	rgld_VolumeSpotPriceAdjustmentThreshold
Namespace Prefix:	rgld_
Data Type:	dtr-types:massItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 15
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480123/805-50-15-3

+ Details

Name:	us-gaap_AssetAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480833/946-310-45-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_InterestReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482987/272-10-50-3

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loan with variable or adjustable rate of interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

+ Details

Name:	us-gaap_LoansReceivableWithVariableRatesOfInterest1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow from the acquisition of a mineral right which is the right to extract a mineral from the earth or to receive payment, in the form of royalty, for the extraction of minerals.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-13

+ Details

Name:	us-gaap_PaymentsToAcquireMineralRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=rgld_CortezMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=rgld_ProductionStageRoyaltyInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=rgld_ExplorationStageRoyaltyInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=rgld_BarrickGoldMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=rgld_FourmileMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=rgld_LawyersProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=rgld_RanchProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=rgld_KhoemacauCopperProjectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=rgld_ProductionStageStreamInterestsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=rgld_NXGoldMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

ACQUISITIONS AND DISPOSITIONS - Asset acquisitions (Details) $ in Thousands							6 Months Ended	12 Months Ended
	Apr. 20, 2023 USD ($)	Aug. 02, 2022 USD ($) oz	Mar. 24, 2022 USD ($)	Mar. 14, 2022 USD ($)	Feb. 23, 2022 USD ($)	Feb. 22, 2022	Dec. 31, 2021 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2021 USD ($)
Acquisitions
Payment to acquire interest							$ 281,066	$ 2,678	$ 922,155	$ 168,147
Cortez
Acquisitions
Payment to acquire interest		$ 525,000
Gross royalty (as a percent)		1.20%
Quantity of gold attributable to royalty \| oz		15,000,000
Royalty payable term		45 days
Production payable (as a percent)		40.00%
Cortez \| Minimum
Acquisitions
Gross royalty (as a percent)		0.00%
Spot price adjustment threshold \| oz		400
Cortez \| Maximum
Acquisitions
Gross royalty (as a percent)		3.00%
Spot price adjustment threshold \| oz		900
Cortez \| Production stage royalty interests
Acquisitions
Payment to acquire interest		$ 199,000
Cortez \| Exploration stage royalty interests
Acquisitions
Payment to acquire interest		$ 326,000
Cortez \| Barrick \| Fourmile
Acquisitions
Ownership percentage held		100.00%
Lawyers Project
Acquisitions
Payment to acquire interest			$ 8,000
Net smelter return (NSR) (as a percent)			0.50%
Lawyers Project \| Exploration stage royalty interests
Acquisitions
Payment to acquire interest			$ 8,000
Ranch Project
Acquisitions
Royalty that can be acquired (as a percent)			2.00%
Khoemacau
Acquisitions
Payment to acquire interest				$ 16,500	$ 10,000
Production payable (as a percent)				100.00%	93.00%	90.00%
Variable loan receivable								25,000
Interest receivable								$ 10,700
Khoemacau \| Production stage stream interests
Acquisitions
Payment to acquire interest				$ 265,000
Xavantina (formerly NX Gold)
Acquisitions
Payment to acquire interest	$ 2,400