Other Charges (Recoveries) (Tables)

12 Months Ended

Dec. 31, 2021

Analysis of income and expense [abstract]

Disclosure of Detailed Information about Other Operating Expense

		Year ended December 31
	Note	2019		2020		2021
Restructuring charges (a)		$	37.9	$	25.8	$	10.5
Losses on post-employment benefit plan (b)	18	4.1		—		—
Transition costs (recoveries) (c)		(95.8)		—		1.2
Credit Facility-related charges (d)		2.0		—		3.0
Acquisition Costs and Other (e)		1.9		(2.3)		(4.4)
		$	(49.9)	$	23.5	$	10.3