Interests in Resource Properties - Additional Information (Details) - Interest in an iron ore development project - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interests in Resource Properties
Expected future minimum sublease payments receivable	$ 3,250
Percentage of pre tax discount rate	10.42%	10.39%	13.18%
Reversal of non cash impairment loss	$ 0	$ 0	$ 0

The amount of future minimum sublease payments expected to be received under non-cancellable subleases for finance leases. Minimum lease payments are payments over the lease term that the lessee is, or can be, required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with: (a) for a lessee, any amounts guaranteed by the lessee or by a party related to the lessee; or (b) for a lessor, any residual value guaranteed to the lessor by: (i) the lessee; (ii) a party related to the lessee; or (iii) a third party unrelated to the lessor that is financially capable of discharging the obligations under the guarantee.

No definition available.

Name:	srl_ExpectedFutureMinimumSubleasePaymentsReceivableUnderNoncancelableSubleasesClassifiedFinanceLeaseIas17
Namespace Prefix:	srl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant