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(LOSS) EARNINGS PER COMMON SHARE
12 Months Ended
Dec. 31, 2020
(LOSS) EARNINGS PER COMMON SHARE  
(LOSS) EARNINGS PER COMMON SHARE

11. (Loss) Earnings per Common Share

                                                                                                                                                                                    

($ millions)

 

2020

 

2019

 


Net (loss) earnings

 

(4 319

)

2 899

 



(millions of common shares)


 


 


 


 


 


Weighted average number of common shares

 

1 526

 

1 559

 


Dilutive securities:

 

 

 

 

 


 

Effect of share options

 

 

2

 


Weighted average number of diluted common shares

 

1 526

 

1 561

 



(dollars per common share)


 


 


 


 


 


Basic and diluted (loss) earnings per share

 

(2.83

)

1.86