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Goodwill (Tables)
 12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Schedule of Reconciliation of Changes in Goodwill
    
 
        December 31
2019
$
  
        December 31
2018
$
 
Gross goodwill, beginning of the year
  
 
1,799.2
 
  1,734.6 
Acquisitions
  
 
90.1
 
  96.3 
Disposals (note 8)
  
 
-
 
  (120.2) 
Impact of foreign exchange
  
 
(59.5
) 
  88.5 
Gross goodwill, end of the year
  
 
1,829.8
 
  1,799.2 
Accumulated impairment losses, beginning of the year
  
 
(178.0
) 
  (178.0) 
Impairment of goodwill - discontinued operations (note 8)
  
 
-
 
  (53.0) 
Disposals - discontinued operations (note 8)
  
 
-
 
  53.0 
Accumulated impairment losses, end of the year
  
 
(178.0
) 
  (178.0) 
Net goodwill, end of the year
  
 
1,651.8
 
  1,621.2 
Schedule of Goodwill Allocated
Goodwill was allocated to its CGUs or group of CGUs as follows:
 
    
 
        December 31
2019
$
   
        December 31
2018
$
 
Canada
  
 
358.2
 
   358.2 
United States
  
 
956.0
 
   1,003.7 
Global
  
 
337.6
 
   259.3 
Allocated
  
 
1,651.8
 
   1,621.2