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Shareholders equity (Tables)
12 Months Ended
Dec. 31, 2021
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, 2020

 

189,381,388

$

5,390.7

At-the-market equity offering

1,054,800

133.7

Exercise of stock options

150,482

9.7

Vesting of restricted share units

42,328

3.7

Dividend reinvestment plan

327,478

42.3

Balance at December 31, 2020

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

Schedule of dividends paid

  

  

2021

  

  

2020

  

Cash dividends

$

179.6

$

154.9

DRIP dividends

 

41.8

 

42.3

$

221.4

$

197.2

Schedule of options to purchase common shares that have been granted

2021

2020

 

  

  

    

Weighted

  

  

    

Weighted

 

average exercise

average exercise

 

Number

price

Number

price

 

Stock options outstanding, at January 1

 

745,962

 

C$

90.08

836,427

 

C$

80.01

Granted

 

81,698

 

C$

168.43

61,594

 

C$

171.33

Exercised

 

(5,614)

 

C$

87.60

(150,482)

 

C$

67.13

Forfeited

C$

(1,577)

C$

112.84

Stock options outstanding, at December 31

 

822,046

 

C$

97.88

745,962

 

C$

90.08

Exercisable stock options, at December 31

 

664,589

 

C$

83.03

596,402

 

C$

76.14

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

2021

2020

Risk-free interest rate

1.21

%

0.39

%

Expected dividend yield

0.91

%

0.78

%

Expected price volatility of the Company’s common shares

29.1

%

28.8

%

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

 

32,451

 

32,451

 

1.94

C$46.17

 

75,000

 

75,000

 

1.63

C$55.58

 

17,397

 

17,397

 

0.95

C$58.67

 

20,000

 

20,000

 

3.64

C$59.52

 

33,876

 

33,876

 

2.95

C$65.76

 

55,853

 

55,853

 

3.95

C$75.45

 

120,074

 

120,074

 

4.94

C$88.76

 

45,082

 

45,082

 

6.64

C$94.57

 

90,409

 

90,409

 

6.95

C$100.10

 

84,523

 

84,523

 

5.94

C$129.32

 

104,089

 

69,393

 

7.95

C$168.43

 

81,698

 

 

9.94

C$171.33

 

61,594

 

20,531

 

8.94

    

822,046

    

664,589

    

5.85

Schedule of number of shares outstanding

2021

2020

  

Performance-

    

Time-based

    

    

Performance-

    

Time-based

    

  

  

based RSUs

    

RSUs

    

Total RSUs

    

based RSUs

    

RSUs

    

Total RSUs

  

Balance at beginning of year

66,996

35,712

102,708

65,972

43,006

108,978

Granted

38,803

15,840

54,643

22,519

14,546

37,065

Settled

(39,005)

(19,452)

(58,457)

(20,883)

(21,445)

(42,328)

Forfeited

-

-

-

(612)

(395)

(1,007)

Balance at end of year

66,794

32,100

98,894

66,996

35,712

102,708

Schedule of share purchase warrants

  

  

2021

  

  

2020

 

Common shares outstanding

 

191,334,392

190,956,476

Stock options

822,046

745,962

Restricted Share Units

98,894

102,708

192,255,332

191,805,146

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

  

  

2021

  

  

2020

 

Balance at beginning of year

 

119,025

104,740

Granted

15,416

14,285

Settled

(26,806)

-

Balance at end of year

107,635

119,025