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The weighted average share price. [Refer: Weighted average [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2025-01-01
-Paragraph 45
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_c&doctype=Standard
-URIDate 2025-03-27

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Represents the closing prices of common shares.

No definition available.

Name:	or_ClosingPricesOfCommonShares
Namespace Prefix:	or_
Data Type:	dtr-types:perShareItemType
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Employees tax obligations settlement amount related to outstanding restricted share units and deferred share units.

No definition available.

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Namespace Prefix:	or_
Data Type:	xbrli:monetaryItemType
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Employees tax obligations settlement amount related to vested restricted share units and deferred share units.

No definition available.

Name:	or_EmployeesTaxObligationsSettlementAmountRelatedToVestedRestrictedShareUnitsAndDeferredShareUnits
Namespace Prefix:	or_
Data Type:	xbrli:monetaryItemType
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Marginal income tax rate.

No definition available.

Name:	or_MarginalIncomeTaxRate
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Share-based compensation related to share options

No definition available.

Name:	or_ShareBasedCompensationRelatedToShareOptions
Namespace Prefix:	or_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Share-based compensation

No definition available.

Name:	or_ShareBasedCompensations
Namespace Prefix:	or_
Data Type:	xbrli:monetaryItemType
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Weighted average value of deferred shares units granted.

No definition available.

Name:	or_WeightedAverageValueDeferredSharesUnitsGranted
Namespace Prefix:	or_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

Weighted average value restricted stock units granted.

No definition available.