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Earnings Per Common Share (EPS) (Tables)
3 Months Ended
Mar. 31, 2020
Earnings Per Share [Abstract]  
Computation of basic and diluted EPS
The computations of basic and diluted EPS for the three months ended March 31 were as follows:
Three Months Ended
March 31,
(Millions, except per share amounts)20202019
Numerator:
Basic and diluted:
Net income$367  $1,550  
Preferred dividends(32) (21) 
Net income available to common shareholders$335  $1,529  
Earnings allocated to participating share awards (a)
(2) (11) 
Net income attributable to common shareholders$333  $1,518  
Denominator: (a)
Basic: Weighted-average common stock807  841  
Add: Weighted-average stock options (b)
  
Diluted808  843  
Basic EPS$0.41  $1.81  
Diluted EPS$0.41  $1.80  
(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 0.3 million and 0.9 million of options for the three months ended March 31, 2020 and 2019, respectively, because inclusion of the options would have been anti-dilutive.