XML 53 R155.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Weighted Average Shares Outstanding - Schedule of Basic and Diluted Common Shares Outstanding, Calculated on Weighted Average Basis (Parenthetical) (Detail)	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Share options	107,168	507,066

X

- References

No definition available.

+ Details

Name:	ifrs-full_EarningsPerShareAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Dilutive share options.

+ References

No definition available.

+ Details

Name:	stn_DilutiveShareOptions
Namespace Prefix:	stn_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant