XML 41 R20.htm IDEA: XBRL DOCUMENT
v3.20.4

Goodwill | 12 Months Ended
--- | ---
Dec. 31, 2020
Goodwill [Abstract] |
Goodwill | Goodwill
| December 31 2020 | December 31 2019
| $ | $
Gross goodwill, beginning of the year | 1,829.8 |  | 1,799.2 |
Acquisitions | 31.4 |  | 90.1 |
Impact of foreign exchange | (9.4) |  | (59.5) |
Gross goodwill, end of the year | 1,851.8 |  | 1,829.8 |
Accumulated impairment losses | (178.0) |  | (178.0) |
Net goodwill, end of the year | 1,673.8 |  | 1,651.8 |
Goodwill arising from acquisitions includes factors such as the expertise and reputation of the assembled workforce acquired, the geographic location of the acquiree, and the expected synergies. The Company considers its CGUs based on the interdependence of cash flows between different geographic locations and how management monitors the operations. As such, the CGUs are defined as Canada, US, Asia/Pacific, Latin America, and UK/Europe/Middle East. As goodwill is not monitored at a level lower than the Company’s operating segments, the CGUs excluding Canada and the US are grouped in Global for purposes of allocating goodwill and testing impairment. Goodwill was allocated to its CGUs or group of CGUs as follows:
| December 31 2020 | December 31 2019
| $ | $
Canada | 359.5 |  | 358.2 |
United States | 963.1 |  | 956.0 |
Global | 351.2 |  | 337.6 |
Allocated | 1,673.8 |  | 1,651.8 |
On October 1, 2020, and October 1, 2019, the Company performed its annual goodwill impairment test in accordance with its policy described in note 4. Based on the results of the 2020 and 2019 tests, the Company concluded that the recoverable amount of each CGU or group of CGUs exceeded its carrying amount and, therefore, goodwill was not impaired. Key assumptions The calculation of fair value less costs of disposal is most sensitive to the following assumptions: •Operating margin rates based on actual experience and management’s long-term projections. •Discount rates reflecting investors’ expectations when discounting future cash flows to a present value, taking into consideration market rates of return, capital structure, company size, and industry risk. If necessary, a discount rate is further adjusted to reflect risks specific to a CGU or group of CGUs when future estimates of cash flows have not been adjusted. For its October 1, 2020 impairment tests, the Company discounted the cash flows for each CGU or group of CGUs using an after-tax discount rate ranging from 8.3% to 25.9% (October 1, 2019 – 8.7% to 16.3%). •Terminal growth rates based on actual experience and market analysis. Projections are extrapolated beyond five years using a growth rate that does not exceed 3.0%. •Non-cash working capital requirements are based on historical actual rates, market analysis, and management’s long-term projections. •Net revenue growth rate based on management’s best estimates of cash flow projections over a five-year period. Sensitivity to changes in assumptions As at October 1, 2020, the recoverable amounts of the Canada and US CGUs exceeded their carrying amounts and management believes that no reasonably possible change in any of the above key assumptions would have caused the carrying amount to exceed its recoverable amount. As at October 1, 2020, the recoverable amount of the Global group of CGUs exceeded its carrying amount by $62.8, assuming operating margins that range from 8.1% to 8.8% and a weighted-average discount rate of 10.2%. Assuming all other assumptions remain the same, the principal changes to key assumptions that would cause the group of CGUs’ carrying amount to exceed its recoverable amount would be a 90-basis point reduction in the assumed operating margins or a 90-basis points increase in the discount rate.

X
- Definition The disclosure of goodwill. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_10_e&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DisclosureOfGoodwillExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Goodwill + References No definition available. + Details
Name: | stn_GoodwillAbstract
Namespace Prefix: | stn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration