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Goodwill (Tables)
 12 Months Ended
Dec. 31, 2024
Goodwill [Abstract]  
Schedule of Reconciliation of Changes in Goodwill
December 31,
2024		December 31,
2023
$
$
(Note 6.c)1
Gross goodwill, beginning of the year2,193.4 2,152.4 
Acquisitions503.0 74.2 
Impact of foreign exchange135.9 (33.2)
Gross goodwill, end of the year2,832.3 2,193.4 
Accumulated impairment losses(119.8)(119.8)
Net goodwill, end of the year2,712.5 2,073.6 
1 Revised for change in accounting policy (see Note 6.c)
Schedule of Goodwill Allocated
Goodwill was allocated to its CGUs or group of CGUs as follows:
December 31,
2024		December 31,
2023
$
$
(Note 6.c)1
Canada422.7 293.8 
United States1,479.3 1,316.0 
Global810.5 463.8 
Allocated2,712.5 2,073.6 
1 Revised for change in accounting policy (see Note 6.c)