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Shareholders' equity (Tables)
6 Months Ended
Jun. 30, 2021
Shareholders' equity  
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

4,000

0.4

Dividend reinvestment plan

145,168

$

19.5

Balance at June 30, 2021

191,105,644

$

5,600.0

Schedule of dividends paid

For the three months ended

For the six months ended

  

June 30, 

June 30, 

  

    

2021

    

2020

  

  

2021

  

  

2020

  

Cash dividends

$

45.2

$

39.8

$

87.0

$

76.0

DRIP dividends

 

11.4

 

10.1

 

19.5

 

21.0

$

56.6

$

49.9

$

106.5

$

97.0