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Note 7 - Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Millions, Except Per Share Amounts, for the Three Months Ended March 31,

 

2022

   

2021

 

Net income

  $ 1,630     $ 1,341  

Weighted-average number of shares outstanding:

               

Basic

    632.2       667.6  

Dilutive effect of stock options

    0.7       0.8  

Dilutive effect of retention shares and units

    0.7       0.8  

Diluted

    633.6       669.2  

Earnings per share – basic

  $ 2.58     $ 2.01  

Earnings per share – diluted

  $ 2.57     $ 2.00  

Stock options excluded as their inclusion would be anti-dilutive

    0.1       0.3