Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property, plant and equipment [abstract]

Disclosure of Detailed Information About Property, Plant and Equipment

We recognize depreciation expense on a straight-line basis over the estimated useful life of the asset as follows:

Buildings	Up to 40 years
Building/leasehold improvements	Up to 40 years or term of lease
Machinery and equipment	3 to 15 years

Property, plant and equipment are comprised of the following:

	2019
	Cost		Accumulated Depreciation and Impairment		Net Book Value
Land	$	35.6	$	12.0	$	23.6
Buildings including improvements	351.7		197.1		154.6
Machinery and equipment	720.8		544.0		176.8
	$	1,108.1	$	753.1	$	355.0

	2020
	Cost		Accumulated Depreciation and Impairment		Net Book Value
Land	$	36.2	$	12.0	$	24.2
Buildings including improvements	360.6		210.2		150.4
Machinery and equipment	721.8		563.9		157.9
	$	1,118.6	$	786.1	$	332.5

The following table details the changes to the net book value of property, plant and equipment for the years indicated:

	Note	Land		Buildings including Improvements		Machinery and Equipment		Total
Balance — January 1, 2019		$	14.8	$	157.5	$	193.0	$	365.3
Transferred from assets held for sale	6	11.2		1.7		—		12.9
Additions		—		21.7		55.1		76.8
Acquisitions through business combinations(i)	3	—		—		(0.3)		(0.3)
Depreciation		—		(20.1)		(53.2)		(73.3)
Write-down of assets and other disposals(ii) (iii)		(2.5)		(6.1)		(17.6)		(26.2)
Foreign exchange and other		0.1		(0.1)		(0.2)		(0.2)
Balance — December 31, 2019		23.6		154.6		176.8		355.0
Additions		—		16.9		34.5		51.4
Depreciation		—		(20.9)		(47.9)		(68.8)
Write-down of assets and other disposals (iii)		—		(0.9)		(4.3)		(5.2)
Foreign exchange and other		0.6		0.7		(1.2)		0.1
Balance — December 31, 2020		$	24.2	$	150.4	$	157.9	$	332.5

(i)    Adjustments were made in 2019 to reflect the fair value of assets acquired in connection with our Impakt acquisition.

(ii)    Includes the disposal of our Toronto real property in March 2019. See "Toronto Real Property and Related Transactions" below.

(iii)    Includes the write-down of equipment primarily related to our capital equipment business in 2019 and disengaged programs in 2019 and 2020 (recorded in each case as restructuring charges), as described in note 16(a).