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Share Capital (Tables)

12 Months Ended

Dec. 31, 2023

Disclosure of share capital, reserves and other equity interest [Abstract]

Schedule of Common Stock Outstanding Roll Forward

			Number of Shares			Amount
Outstanding at December 31, 2021			391,889,733			$3,692.9
Shares issued through:
Share-based compensation plans			1,198,125			7.6
Shares repurchased and cancelled (i)			(1,100,000)			(10.4)
Flow-through share financing			922,483			6.9
DRIP (ii)			527,770			4.1
ESPP (iii)			373,806			2.7
Cancellation of unexchanged shares			(5,428)			—
Outstanding at December 31, 2022			393,806,489			$3,703.8
Shares issued through:
Share-based compensation plans			1,425,024			12.3
Manitou acquisition (note 8)			1,045,593			13.4
DRIP (ii)			353,084			4.1
ESPP (iii)			469,566			5.6
Exercise of Manitou warrants (note 8)			60,983			0.9
Cancellation of unexchanged shares			(203,755)			(1.5)
Outstanding at December 31, 2023			396,956,984			$3,738.6

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:

			Number			Weighted average exercise price (CAD$)
Outstanding at December 31, 2021			4,601,726			$7.47
Granted			634,727			9.53
Exercised			(1,198,125)			5.89
Forfeited			(113,477)			6.68
Outstanding at December 31, 2022			3,924,851			$8.32
Granted			481,449			14.10
Exercised			(1,424,916)			8.01
Forfeited			(215,007)			10.40
Outstanding at December 31, 2023			2,766,377			$9.32

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, 2023			December 31, 2022
Weighted average share price at grant date (CAD$)			$14.10			$9.53
Risk-free rate			3.87		%	1.48		%
Expected dividend yield			0.96		%	1.20		%
Expected stock price volatility (based on historical volatility)			48		%	53		%
Expected life of option (months)			42			54
Weighted average per share fair value of stock options granted (CAD$)			$4.94			$3.80

Disclosure of number and weighted average remaining contractual life of outstanding share options

Stock options outstanding and exercisable as at December 31, 2023:

						Outstanding												Exercisable
Range of exercise prices (CAD$)						Number of options			Weighted average exercise price (CAD$)			Weighted average remaining contractual life (years)						Number of options			Weighted average exercise price (CAD$)
$6.01 - $7.00						567,111			6.57			1.78						567,111			6.57
$7.01 - $8.00						396,373			7.63			3.02						396,373			7.63
$8.01 - $9.00						15,571			8.63			3.16						15,571			8.63
$9.01 - $11.00						1,355,873			9.47			4.61						663,694			9.41
$11.01 - $17.77						431,449			14.10			4.79						—			—
						2,766,377			$9.32			4.09						1,642,749			$7.99

Stock options outstanding and exercisable by range of exercise prices

Stock options outstanding and exercisable as at December 31, 2023:

						Outstanding												Exercisable
Range of exercise prices (CAD$)						Number of options			Weighted average exercise price (CAD$)			Weighted average remaining contractual life (years)						Number of options			Weighted average exercise price (CAD$)
$6.01 - $7.00						567,111			6.57			1.78						567,111			6.57
$7.01 - $8.00						396,373			7.63			3.02						396,373			7.63
$8.01 - $9.00						15,571			8.63			3.16						15,571			8.63
$9.01 - $11.00						1,355,873			9.47			4.61						663,694			9.41
$11.01 - $17.77						431,449			14.10			4.79						—			—
						2,766,377			$9.32			4.09						1,642,749			$7.99

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, 2023 and 2022:

			Restricted share units ("RSU")						Deferred share units ("DSU")			Performance share units ("PSU")
Outstanding units, December 31, 2021			2,168,184						911,428			1,329,655
Granted			905,058						143,178			497,895
Forfeited			(296,907)						—			(72,522)
Settled			(641,786)						—			(404,603)
Outstanding units, December 31, 2022			2,134,549						1,054,606			1,350,425
Granted			747,993						112,653			369,589
Forfeited/expired			(383,686)						—			(134,563)
Settled			(587,118)						(154,025)			(426,163)
Outstanding units, December 31, 2023			1,911,738						1,013,234			1,159,288

Schedule of Earnings (loss) per share

									For the years ended
									December 31, 2023			December 31, 2022
Net earnings									$210.0			$37.1
Weighted average number of common shares outstanding (in thousands)									395,509			392,172
Basic earnings per share									$0.53			$0.09
Dilutive effect of potential common share equivalents (in thousands)									2,560			2,336
Diluted weighted average number of common shares outstanding (in thousands)									398,069			394,508
Diluted earnings per share									$0.53			$0.09

Share units excluded from calculation of diluted earnings per share for the years ended:

(in thousands)

December 31, 2023

December 31, 2022

Stock options

4

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