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Share Capital (Tables)
 12 Months Ended
Dec. 31, 2022
Disclosure of share capital, reserves and other equity interest [Abstract]  
Schedule of Common Stock Outstanding Roll Forward
Number of SharesAmount
Outstanding at December 31, 2020392,776,822 $3,702.9 
Shares issued through:
Share-based compensation plans40,000 0.3 
Shares repurchased and cancelled(1,583,562)(14.9)
Dividend reinvestment and share purchase plan656,473 4.6 
Outstanding at December 31, 2021391,889,733 $3,692.9 
Shares issued through:
Share-based compensation plans1,198,125 7.6 
Shares repurchased and cancelled (i)(1,100,000)(10.4)
Flow-through share financing (ii)922,483 6.9 
Dividend reinvestment plan (iii)527,770 4.1 
Shares issued through share purchase plan373,806 2.7 
Cancellation of unexchanged shares(5,428)— 
Outstanding at December 31, 2022393,806,489 $3,703.8 
Disclosure of number and weighted average exercise prices of share options
The following is a continuity of the changes in the number of stock options outstanding:
NumberWeighted average exercise price (CAD$)
Outstanding at December 31, 20203,476,579 $6.80 
Granted1,165,147 9.38 
Exercised(40,000)5.16 
Outstanding at December 31, 20214,601,726 $7.47 
Granted634,727 9.53 
Exercised(1,198,125)5.89 
Forfeited(113,477)6.68 
Outstanding at December 31, 20223,924,851 $8.32 
Weighted average fair value assumptions used in the Black-Scholes valuation for stock options The following table presents the weighted average fair value assumptions used in the Black-Scholes valuation:
For options granted in the year ended:December 31, 2022December 31, 2021
Weighted average share price at grant date (CAD$)$9.53 $9.38 
Risk-free rate1.48 %0.78 %
Expected dividend yield1.20 %1.30 %
Expected stock price volatility (based on historical volatility)53 %57 %
Expected life of option (months)5454
Weighted average per share fair value of stock options granted (CAD$)$3.80$3.82
Disclosure of number and weighted average remaining contractual life of outstanding share options
Stock options outstanding and exercisable as at December 31, 2022:
OutstandingExercisable
Range of exercise prices (CAD$)Number of optionsWeighted average exercise price (CAD$)Weighted average remaining contractual life (years)Number of optionsWeighted average exercise price (CAD$)
$6.01 - $7.001,092,977 6.57 2.821,092,977 6.57 
$7.01 - $8.00743,126 7.62 4.02477,026 7.62 
$8.01 - $9.0015,571 8.63 4.166,048 8.63 
$9.01 - $11.002,073,177 9.50 4.79661,684 9.50 
3,924,851 $8.32 4.092,237,735 $6.67 
Stock options outstanding and exercisable by range of exercise prices
Stock options outstanding and exercisable as at December 31, 2022:
OutstandingExercisable
Range of exercise prices (CAD$)Number of optionsWeighted average exercise price (CAD$)Weighted average remaining contractual life (years)Number of optionsWeighted average exercise price (CAD$)
$6.01 - $7.001,092,977 6.57 2.821,092,977 6.57 
$7.01 - $8.00743,126 7.62 4.02477,026 7.62 
$8.01 - $9.0015,571 8.63 4.166,048 8.63 
$9.01 - $11.002,073,177 9.50 4.79661,684 9.50 
3,924,851 $8.32 4.092,237,735 $6.67 
Continuity of the changes in the number of other long-term incentive plans (LTIP) outstanding
The following is a continuity of the changes in the number of other long-term incentive plans ("LTI") outstanding for the years ended December 31, 2022 and 2021:
Restricted share units ("RSU")Deferred share units ("DSU")Performance share units ("PSU")
Outstanding units, December 31, 20201,968,591 864,845 1,234,018 
Granted724,984 165,772 490,034 
Forfeited(56,302)— (59,162)
Settled(469,089)(119,189)(335,235)
Outstanding units, December 31, 20212,168,184 911,428 1,329,655 
Granted905,058 143,178 497,895 
Forfeited(296,907)— (72,522)
Settled(641,786)— (404,603)
Outstanding units, December 31, 20222,134,549 1,054,606 1,350,425 
Schedule of Earnings (loss) per share
For the year ended
December 31, 2022December 31, 2021
Net earnings (loss) $37.1 ($66.7)
Weighted average number of common shares outstanding (in thousands)392,172 392,649 
Basic earnings per share$0.09 ($0.17)
Dilutive effect of potential common share equivalents (in thousands)2,336 — 
Diluted weighted average number of common shares outstanding (in thousands)394,508 392,649 
Diluted earnings per share$0.09 ($0.17)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following table lists the equity securities that were excluded from the computation of diluted earnings per share. The securities were excluded as the exercise price related to the particular security exceeded the average market price of the Company's common shares of CAD $10.26 for the year ended December 31, 2022 (2021 - CAD $10.01), or the inclusion of the equity securities had an anti-dilutive effect on net loss. For the periods in which the Company records a net loss, diluted loss per share is calculated using the basic weighted average number of shares outstanding, as using the diluted weighted average number of shares outstanding in the calculation would be anti-dilutive.

Equity securities excluded from calculation of diluted earnings per share:For the years ended December 31,
(in thousands)20222021
Stock options30 4,601