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Share-based compensation expense (Tables)
6 Months Ended
Jun. 30, 2021
Share-based compensation expense  
Schedule of Share-based compensation expense

For the three months ended

For the six months ended

 

June 30, 

June 30, 

    

2021

    

2020

  

  

2021

  

  

2020

  

Stock options and restricted share units

$

1.6

$

1.3

$

3.0

$

2.5

Deferred share units

 

3.4

 

5.5

 

4.0

 

5.6

$

5.0

$

6.8

$

7.0

$

8.1