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Acquisitions - Additional Information (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 30, 2018 | Jun. 30, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Apr. 30, 2018 | Jan. 01, 2017 | [1] | Nov. 30, 2016
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |
Integration and acquisition-related transaction costs |  |  |  | $ 11.0 | $ 4.5 |  | $ 1.4 |  |  |
Goodwill |  |  |  | 198.4 | $ 23.2 | [1] |  |  | $ 23.2 |
Prior credit facility |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |
Repayments of borrowings | $ (245.0) |  |  |  |  |  |  |  |  |
Karel |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |
Cash purchase price |  |  |  |  |  |  |  |  |  | $ 14.9
Current assets recognised as of acquisition date |  |  |  |  |  |  |  |  |  | 11.5
Goodwill |  |  |  |  |  |  |  |  |  | $ 3.7
Percentage of goodwill that is tax deductible |  |  |  |  |  |  |  |  |  | 66.67%
Atrenne |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |
Current assets recognised as of acquisition date |  |  |  |  |  |  |  | $ 31.5 |  |
Goodwill |  |  |  |  |  |  |  | 64.0 |  |
Consideration transferred |  |  |  |  |  |  |  | 141.7 |  |
Working capital adjustment |  |  |  |  |  |  |  | 3.8 |  |
Inventory fair value adjustment |  |  |  |  |  |  |  | $ 1.6 |  |
Inventory fair value adjustment (note 3) |  | $ 1.6 |  |  |  |  |  |  |  |
Amortization expense annual increase |  |  |  | $ 6.0 |  |  |  |  |  |
Impakt |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |
Current assets recognised as of acquisition date | 46.7 |  |  |  |  |  |  |  |  |
Goodwill | 111.2 |  |  |  |  |  |  |  |  |
Consideration transferred | $ 325.4 |  |  |  |  |  |  |  |  |
Forecast | Impakt |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |
Amortization expense annual increase |  |  | $ 15.0 |  |  |  |  |  |  |
[1] | Certain prior period figures have been restated to reflect the adoption of IFRS 15 (see note 2)

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