XML 43 R18.htm IDEA: XBRL DOCUMENT v3.24.0.1
Note 8 - Earnings Per Share
 12 Months Ended
Dec. 31, 2023
Notes to Financial Statements  
Earnings Per Share [Text Block]

8. Earnings Per Share

 

The following table provides a reconciliation between basic and diluted earnings per share for the years ended December 31:

 

Millions, Except Per Share Amounts

 

2023

  

2022

  

2021

 

Net income

 $6,379  $6,998  $6,523 

Weighted-average number of shares outstanding:

            

Basic

  609.2   622.7   653.8 

Dilutive effect of stock options

  0.4   0.6   0.8 

Dilutive effect of retention shares and units

  0.6   0.7   0.8 

Diluted

  610.2   624.0   655.4 

Earnings per share - basic

 $10.47  $11.24  $9.98 

Earnings per share - diluted

 $10.45  $11.21  $9.95 

 

Common stock options totaling 0.9 million, 0.3 million, and 0.2 million for 2023, 2022, and 2021, respectively, were excluded from the computation of diluted earnings per share because the exercise prices of these stock options exceeded the average market price of our common stock for the respective periods, and the effect of their inclusion would be anti-dilutive.