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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2022
Text block [abstract]  
Schedule of Options Outstanding
Options outstanding
 
   
2022
           2021  
For the years ended December 31,
  
Number of
options
(in millions)
     Weighted
average
exercise price		          
Number of
options
(in millions)
     Weighted
average
exercise price		  
Outstanding, January 1
  
 
21
 
  
$
22.09
 
             24     $ 21.74  
Granted
  
 
–
 
  
 
–
 
             –       –  
Exercised
  
 
(1
) 
  
 
16.15
 
             (3 )      18.34  
Expired
  
 
–
 
  
 
24.63
 
             –       24.73  
Forfeited
  
 
–
 
  
 
23.96
 
             –       23.96  
Outstanding, December 31
  
 
20
 
  
$
22.42
 
             21     $ 22.09  
Exercisable, December 31
  
 
10
 
  
$
  20.91
 
             8     $   18.94  
Schedule of Range of Exercise Prices of Outstanding Share Options
    Options outstanding           Options exercisable  
For the year ended December 31, 2022
  
Number of
options
(in millions)
     Weighted
average
exercise price		     Weighted average
remaining
contractual life
(in years)		          
Number of
options
(in millions)
     Weighted
average
exercise price		     Weighted average
remaining
contractual life
(in years)		  
$12.64—$20.99
  
 
4
 
  
$
17.42
 
  
 
2.91
 
          
 
4
 
  
$
17.42
 
  
 
2.91
 
$21.00—$24.83
  
 
16
 
  
$
23.58
 
  
 
4.94
 
          
 
6
 
  
$
23.08
 
  
 
2.95
 
Total
  
 
20
 
  
$
  22.42
 
  
 
4.56
 
          
 
10
 
  
$
  20.91
 
  
 
2.93
 
Schedule of Deferred Share Units
The fair value of 252,000 DSUs issued during the year was $24.15 per unit as at December 31, 2022 (2021 – 161,000 at $24.11 per unit).
 
For the years ended December 31,
Number of DSUs (in thousands)
  
2022
     2021  
Outstanding, January 1
  
 
2,079
 
     2,169  
Issued
  
 
252
 
     161  
Reinvested
  
 
126
 
     100  
Redeemed
  
 
(75
) 
     (345 ) 
Forfeitures and cancellations
  
 
(9
) 
     (6 ) 
Outstanding, December 31
  
 
2,373
 
     2,079