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Other long-term liabilities (Tables)
 12 Months Ended
Dec. 31, 2024
Subclassifications of assets, liabilities and equities [abstract]  
Schedule of composition of other liabilities
As at
Dec 31
2024		Dec 31
2023
Share-based compensation liability (note 14)
$73,547 $74,107 
Site restoration costs
38,048 32,596 
Land mortgage
27,483 28,014 
Defined benefit pension plans (note 21)
20,531 22,691 
Cash flow hedges (note 19)
36,811 91,183 
Other
882 1,319 
197,302 249,910 
Less current maturities
(46,840)(94,992)
$150,462 $154,918 
Schedule of provision for site restoration costs The movement in the provision during the year is explained as follows:
20242023
Balance at January 1
$32,596 $36,581 
New or revised provisions
3,831 (5,573)
Accretion expense
1,621 1,588 
Balance at December 31
$38,048 $32,596