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Other Charges (Recoveries) - Schedule of Charges (Recoveries) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Analysis of income and expense [abstract] |  |  |  |
Restructuring charges |  | $ 25.8 | $ 37.9 | $ 35.4
Losses on pension and non-pension post-employment benefit plans | $ 63.3 | 0.0 | 4.1 | 0.0
Transition Costs (Recoveries) |  | 0.0 | (95.8) | 13.2
Credit Facility-related charges |  | 0.0 | 2.0 | 1.2
Acquisition Costs and other |  | (2.3) | 1.9 | 11.2
Other expense |  | $ 23.5 | $ (49.9) | $ 61.0

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- Definition The amount of expense relating to restructuring. Restructuring is a programme that is planned and controlled by management and materially changes either the scope of a business undertaken by an entity or the manner in which that business is conducted. Such programmes include: (a) the sale or termination of a line of business; (b) closure of business locations in a country or region or the relocation of activities from one country or region to another; (c) changes in management structure; and (d) fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_b&doctype=Standard -URIDate 2020-01-01 + Details
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