XML 104 R76.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Basis of Preparation - Schedule of Estimated Useful Lives And Depreciation Rates (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Bottom of range [member] | Engineering equipment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Estimated lives/ Declining balance | 5 years | 20 percent
Bottom of range [member] | Office equipment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Estimated lives/ Declining balance | 5 years | 20 percent
Bottom of range [member] | Other [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Estimated lives/ Declining balance | 5 years | 10 percent
Top of range [member] | Engineering equipment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Estimated lives/ Declining balance | 10 years | 30 percent
Top of range [member] | Office equipment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Estimated lives/ Declining balance | 10 years | 30 percent
Top of range [member] | Other [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Estimated lives/ Declining balance | 50 years | 30 percent

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

X
- Definition The useful lives or depreciation rates used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_c&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=stn_EngineeringEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_OfficeEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_OtherPropertyPlantAndEquipmentMember
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: |