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Earnings Per Share of Common Stock
3 Months Ended
Mar. 31, 2014
Earnings Per Share [Abstract]  
Earnings Per Share of Common Stock
Earnings Per Share of Common Stock 
Set forth below is a reconciliation of the numerator and denominator for basic and diluted earnings per share calculations for the periods indicated:
 
Three Months Ended
 
March 31,
 
2014
2013
Numerator:
 
 
Income from continuing operations after income taxes attributable to DuPont
$
1,439

$
1,380

Preferred dividends
(2
)
(3
)
Income from continuing operations after income taxes available to DuPont common stockholders
$
1,437

$
1,377

 
 
 
Income from discontinued operations after income taxes
$

$
1,968

 
 
 
Net income available to common stockholders
$
1,437

$
3,345

 
 
 
Denominator:
 
 
Weighted-average number of common shares outstanding - Basic
923,461,000

928,348,000

Dilutive effect of the company’s employee compensation plans
7,271,000

7,042,000

Weighted-average number of common shares outstanding - Diluted
930,732,000

935,390,000



The following average number of stock options were antidilutive, and therefore, were not included in the diluted earnings per share calculations: 
 
Three Months Ended
 
March 31,
 
2014
2013
Average number of stock options

10,384,000


 
The change in the average number of stock options that were antidilutive in the three months ended March 31, 2014 compared to the same period last year was due to changes in the company’s average stock price.