Basis of Presentation and Summary of Significant Accounting Policies - Foreign Currency Translation (Details)	12 Months Ended
Dec. 31, 2019 USD ($) EUR (€)	Dec. 31, 2018 USD ($) EUR (€)	Dec. 31, 2017 USD ($) EUR (€)
Euro Member Countries, Euro
Foreign Currency Translation
Closing rate \| €	1.4583	1.5613	1.5052
Average rate \| €	1.4856	1.5302	1.4650
United States of America, Dollars
Foreign Currency Translation
Closing rate \| $	1.2988	1.3642	1.2545
Average rate \| $	1.3269	1.2957	1.2986

The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_AverageForeignExchangeRate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

+ References

+ Details

Name:	ifrs-full_ClosingForeignExchangeRate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	srl_EffectOfChangesInForeignExchangeRatesLineItems
Namespace Prefix:	srl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_CurrencyAxis=currency_EUR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: