XML 146 R75.htm IDEA: XBRL DOCUMENT v3.20.1

Other investments (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 CAD ($)
Other Investment Abstract
Non-cash transaction, simultaneous disposal and acquisition of investment	$ 5.7

X

- Definition

Represents amount of about non-cash transaction, simultaneous disposal and acquisition of investment.

+ References

No definition available.

+ Details

Name:	or_NonCashTransactionSimultaneousDisposalAndAcquisitionOfInvestment
Namespace Prefix:	or_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	or_OtherInvestmentAbstract
Namespace Prefix:	or_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration