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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2021
Property, plant and equipment [abstract]  
Property, Plant and Equipment PROPERTY, PLANT AND EQUIPMENT:
    Property, plant and equipment are comprised of the following:
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 
2021
Cost
Accumulated
Depreciation and
Impairment
Net Book
Value
Land
$35.2 $12.0 $23.2 
Buildings including improvements
383.5 228.0 155.5 
Machinery and equipment
739.7 579.7 160.0 
$1,158.4 $819.7 $338.7 
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, 2020$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(i)
— (0.9)(4.3)(5.2)
Foreign exchange and other
0.6 0.7 (1.2)0.1 
Balance — December 31, 202024.2 150.4 157.9 332.5 
Additions
— 11.0 47.2 58.2 
Acquisitions through business combination3— 17.8 5.0 22.8 
Depreciation
— (22.0)(46.8)(68.8)
Write-down of assets and other disposals (i)
— (0.8)(3.1)(3.9)
Foreign exchange and other
(1.0)(0.9)(0.2)(2.1)
Balance — December 31, 2021$23.2 $155.5 $160.0 $338.7 
(i)    Includes the write-down of equipment primarily related to disengaged programs in 2020 and 2021 (recorded in each case as restructuring charges), as described in note 15(a).
We review the carrying amount of property, plant and equipment for impairment whenever events or changes in circumstances (triggering events) indicate that the carrying amount of such assets (or the related CGU or CGUs) may not be recoverable. If any such indication exists, we test the carrying amount of such assets or CGUs for impairment. We did not identify any triggering event during the course of 2019 through 2021 indicating that the carrying amount of such assets or related CGUs may not be recoverable.