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Other Charges (Recoveries) - Schedule of Charges (Recoveries) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Analysis of income and expense [abstract]
Restructuring charges	$ 10.5	$ 25.8	$ 37.9
Losses on post-employment benefit plan	0.0	0.0	4.1
Credit Facility-related charges	3.0	0.0	2.0
Acquisition Costs and Other	(4.4)	(2.3)	1.9
Other expense	$ 10.3	$ 23.5	$ (49.9)

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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.

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The amount of expenses that the entity does not separately disclose in the same statement or note when the entity uses the 'function of expense' form for its analysis of expenses.

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