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Commitments (Tables)

12 Months Ended

Dec. 31, 2023

Lease [Abstract]

Schedule of Lease Commitments

These commitments as at December 31, 2023, are as follows:

			Total $			Less than 1 Year $			1 to 3 Years $			After 3 Years $
Variable lease payments and other			283.0			51.0			82.5			149.5
Leases not commenced but committed			55.7			5.6			12.9			37.2
Software financing not commenced but committed			53.4			17.8			35.6			—
			392.1			74.4			131.0			186.7

X

- Definition

The disclosure of additional information about leasing activities of a lessee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2023-01-01
-Paragraph 59
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_59&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lease

+ References

No definition available.

+ Details

Name:	stn_LeaseAbstract
Namespace Prefix:	stn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration