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Share-based compensation plans (Tables)	12 Months Ended
	Dec. 31, 2024
Disclosure of terms and conditions of share-based payment arrangement [line items]
Schedule of number of stock options and weighted average exercisable price	(Number of options) 2024 2023 Beginning of year 1,396,289 3,053,571 Options granted - - Options exercised [note 17] (1,136,331) (1,657,282) End of year 259,958 1,396,289 Exercisable 259,958 1,396,289 2024 2023 Beginning of year $14.73 $15.75 Options granted - - Options exercised  14.66 16.62 End of year $15.05 $14.73 Exercisable $15.05 $14.73
Total options outstanding and exercisable	Options outstanding Options exercisable Option price per share Number Weighted average remaining life Weighted average exercisable price Number Weighted average exercisable price $ 11.32 14,600 1.2 $11.32 14,600 $11.32 $ 15.27 245,358 2.2 $15.27 245,358 $15.27 259,958 259,958
Compensation expense under equity settled plans	2024 2023 Employee share ownership plan $ 4,881 $ 4,460 Restricted share unit plan 6,775 3,692 Total $ 11,656 $ 8,152
Expenses (recoveries) cash-settled plans	2024 2023 Performance share unit plan $ 13,249 $ 22,013 Restricted share unit plan 13,125 19,045 Deferred share unit plan 9,221 15,447 Phantom stock option plan 743 1,908 Phantom restricted share unit plan 863 812 Total $ 37,201 $ 59,225
Equity Settled Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Inputs measurement fair value of share-based plans	Grant date Mar 1/24 Number of options granted 203,648 Average strike price $55.00 Expected forfeitures 11% Weighted average grant date fair values $55.00
Cash Settled Plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Inputs measurement fair value of share-based plans	Phantom PSU RSU RSU Number of units 178,600 119,010 9,096 Expected vesting 78% - - Expected life of option 3  years 3  years 3  years Expected forfeitures 9% 9% 7% Weighted average measurement date fair values $55.00 $55.00 $55.00 Phantom Phantom stock options PSU RSU RSU Number of units 35,361 636,588 423,453 25,560 Expected vesting - 65% - - Average strike price $12.48 - - - Expected dividend $0.16 - - $0.16 Expected volatility 43% - - - Risk-free interest rate 2.9% - - - Expected life of option 2.9  years 0.9  years 1.0  years 1.0  years Expected forfeitures 7% 4% 8% 7% Weighted average measurement date fair values $61.98 $73.91 $73.91 $73.91

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The disclosure of information about indirect, by reference to the fair value of the equity instruments granted, measurement of the fair value of goods or services received as consideration for the entity's share options.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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