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Shareholders' Equity (Tables)
12 Months Ended
Dec. 31, 2022
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Schedule of changes in share capital

Number

  

  

of shares

  

  

Amount

 

Balance at January 1, 2021

 

190,956,476

$

5,580.1

Exercise of stock options

5,614

0.5

Vesting of restricted share units

58,457

6.1

Dividend reinvestment plan

313,845

41.8

Balance at December 31, 2021

191,334,392

$

5,628.5

Balance at January 1, 2022

191,334,392

$

5,628.5

Exercise of stock options

148,295

12.2

Vesting of restricted share units

49,919

6.4

Dividend reinvestment plan

360,085

48.2

Balance at December 31, 2022

191,892,691

$

5,695.3

(b)At-the-Market Equity Program
Schedule of dividends paid

  

  

2022

  

  

2021

  

Cash dividends

$

197.6

$

179.6

DRIP dividends

 

48.2

 

41.8

$

245.8

$

221.4

Schedule of options to purchase common shares that have been granted

  

  

    

Weighted

  

average exercise

Number

price

Stock options outstanding, at January 1, 2021

 

745,962

 

C$

90.08

Granted

 

81,698

 

C$

168.43

Exercised

 

(5,614)

 

C$

87.60

Forfeited

C$

Stock options outstanding, at December 31, 2021

 

822,046

 

C$

97.88

Stock options outstanding, at January 1, 2022

822,046

C$

97.88

Granted

67,604

 

C$

183.61

Exercised

(148,295)

 

C$

82.81

Forfeited

(16,702)

C$

168.43

Stock options outstanding, at December 31, 2022

 

724,653

 

C$

107.34

Exercisable stock options, at December 31, 2021

664,589

C$

83.03

Exercisable stock options, at December 31, 2022

 

584,522

 

C$

90.84

Schedule of fair value of options calculated using Black-Scholes option pricing model and weighted average assumptions utilized

2022

2021

Risk-free interest rate

2.93

%

1.21

%

Expected dividend yield

0.92

%

0.91

%

Expected price volatility of the Company’s common shares

30.0

%

29.1

%

Expected life of the option

 

4 years

4 years

Forfeiture rate

0

%

0

%

Schedule of options to purchase common shares outstanding, exercise prices and weighted average lives to maturity

    

    

    

Weighted

 

Exercise

Options

Options

average life

 

price

outstanding

exercisable

(years)

 

C$40.87

 

28,056

 

28,056

 

0.94

C$46.17

 

37,500

 

37,500

 

0.63

C$58.67

 

20,000

 

20,000

 

2.64

C$59.52

 

31,795

 

31,795

 

1.95

C$65.76

 

55,353

 

55,353

 

2.95

C$75.45

119,574

119,574

3.95

C$88.76

45,082

45,082

5.64

C$94.57

59,221

59,221

5.95

C$100.10

56,470

56,470

4.94

C$129.32

 

77,408

 

77,408

 

6.95

C$168.43

 

64,996

 

13,000

 

8.94

C$168.72

 

7,968

 

 

9.64

C$171.33

 

61,594

 

41,063

 

7.95

C$178.01

 

8,030

 

 

9.38

C$181.57

 

29,470

 

 

9.37

C$185.70

 

2,299

 

 

9.88

C$194.65

 

19,837

 

 

9.95

    

724,653

    

584,522

    

5.44

Schedule of number of shares outstanding

  

Performance-

    

Time-based

    

  

based RSUs

    

RSUs

    

Total RSUs

Balance at January 1, 2021

66,996

35,712

102,708

Granted

38,803

15,840

54,643

Settled

(39,005)

(19,452)

(58,457)

Balance at December 31, 2021

66,794

32,100

98,894

Balance at January 1, 2022

66,794

32,100

98,894

Granted

37,486

15,643

53,129

Settled

(33,229)

(16,690)

(49,919)

Balance at December 31, 2022

71,051

31,053

102,104

Schedule of share purchase warrants

  

  

2022

  

  

2021

 

Common shares outstanding

 

191,892,691

191,334,392

Stock options

724,653

822,046

Restricted Share Units

102,104

98,894

192,719,448

192,255,332

DSU plan  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Schedule of number of shares outstanding

  

  

2022

  

  

2021

 

Balance at beginning of year

 

107,635

119,025

Granted

14,703

15,416

Settled

(12,210)

(26,806)

Balance at end of year

110,128

107,635