XML 156 R129.htm IDEA: XBRL DOCUMENT v3.10.0.1

Share Capital - Summary of Outstanding Share Options (Detail)	12 Months Ended
	Dec. 31, 2018 CAD ($) yr
Range one [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Options Outstanding	142,540
Weighted Average Remaining Contractual Life in Years, Options Outstanding | yr	0.16
Weighted Average Exercise Price, Options Outstanding	$ 14.88
Shares Exercisable	142,540
Weighted Average Remaining Contractual Life in Years, Options Exercisable | yr	0.16
Weighted Average Exercise Price, Options Exercisable	$ 14.88
Range two [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Options Outstanding	364,526
Weighted Average Remaining Contractual Life in Years, Options Outstanding | yr	1.16
Weighted Average Exercise Price, Options Outstanding	$ 20.88
Shares Exercisable	364,526
Weighted Average Remaining Contractual Life in Years, Options Exercisable | yr	1.16
Weighted Average Exercise Price, Options Exercisable	$ 20.88
Range three [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Options Outstanding	4,480,476
Weighted Average Remaining Contractual Life in Years, Options Outstanding | yr	3.21
Weighted Average Exercise Price, Options Outstanding	$ 32.46
Shares Exercisable	2,401,323
Weighted Average Remaining Contractual Life in Years, Options Exercisable | yr	2.75
Weighted Average Exercise Price, Options Exercisable	$ 32.40
Range four [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Options Outstanding	4,987,542
Weighted Average Remaining Contractual Life in Years, Options Outstanding | yr	2.98
Weighted Average Exercise Price, Options Outstanding	$ 31.11
Shares Exercisable	2,908,389
Weighted Average Remaining Contractual Life in Years, Options Exercisable | yr	2.43
Weighted Average Exercise Price, Options Exercisable	$ 30.10
Bottom of range [member] | Range three [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Range of Exercise Prices	31.75
Bottom of range [member] | Range four [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Range of Exercise Prices	14.88
Top of range [member] | Range one [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Range of Exercise Prices	14.88
Top of range [member] | Range two [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Range of Exercise Prices	20.88
Top of range [member] | Range three [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Range of Exercise Prices	32.98
Top of range [member] | Range four [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Range of Exercise Prices	$ 32.98

X

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

X

- Definition

The exercise price of outstanding share options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_d&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_ExercisePriceOfOutstandingShareOptions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of share options outstanding in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_d&doctype=Standard
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph b
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_b_i&doctype=Standard
-URIDate 2018-03-16

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph b
-Clause vi
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_b_vi&doctype=Standard
-URIDate 2018-03-16

+ Details

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

X

- Definition

The number of share options exercisable in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph b
-Clause vii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_b_vii&doctype=Standard
-URIDate 2018-03-16

+ Details

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

X

- Definition

The weighted average exercise price of share options exercisable in a share-based payment arrangement. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph b
-Clause vii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_b_vii&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The weighted average exercise price of share options outstanding in a share-based payment arrangement. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph b
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_b_i&doctype=Standard
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph b
-Clause vi
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_b_vi&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_d&doctype=Standard
-URIDate 2018-03-16

+ Details

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

X

- Definition

Weighted average remaining contractual life of exercisable share options.

+ References

No definition available.

+ Details

Name:	stn_WeightedAverageRemainingContractualLifeOfExercisableShareOptions
Namespace Prefix:	stn_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=stn_RangesOfExercisePricesForOutstandingShareOptionsOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=stn_RangesOfExercisePricesForOutstandingShareOptionsTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=stn_RangesOfExercisePricesForOutstandingShareOptionsThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangesOfExercisePricesForOutstandingShareOptionsAxis=stn_RangesOfExercisePricesForOutstandingShareOptionsFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: