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Earnings Per Common Share (EPS)
6 Months Ended
Jun. 30, 2020
Earnings Per Share [Abstract]  
Earnings Per Common Share (EPS) Earnings Per Common Share (EPS)
The computations of basic and diluted EPS for the three and six months ended June 30 were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
(Millions, except per share amounts)2020201920202019
Numerator:
Basic and diluted:
Net income$257  $1,761  $624  $3,311  
Preferred dividends(17) (19) (49) (40) 
Net income available to common shareholders$240  $1,742  $575  $3,271  
Earnings allocated to participating share awards (a)
(2) (13) (4) (24) 
Net income attributable to common shareholders$238  $1,729  $571  $3,247  
Denominator: (a)
Basic: Weighted-average common stock804  834  806  837  
Add: Weighted-average stock options (b)
    
Diluted805  836  807  839  
Basic EPS$0.29  $2.07  $0.71  $3.88  
Diluted EPS$0.29  $2.07  $0.71  $3.87  
(a)Our unvested restricted stock awards, which include the right to receive non-forfeitable dividends or dividend equivalents, are considered participating securities. Calculations of EPS under the two-class method exclude from the numerator any dividends paid or owed on participating securities and any undistributed earnings considered to be attributable to participating securities. The related participating securities are similarly excluded from the denominator.
(b)The dilutive effect of unexercised stock options excludes from the computation of EPS 1.5 million and 0.4 million of options for the three months ended June 30, 2020 and 2019, respectively, and 0.6 million and 0.4 million of options for the six months ended June 30, 2020 and 2019, respectively, because inclusion of the options would have been anti-dilutive.