Earnings Per Share of Common Stock

3 Months Ended

Mar. 31, 2013

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,
	2013			2012
Numerator:
Income from continuing operations after income taxes attributable to DuPont	$	1,380		$	1,397
Preferred dividends	(3		)	(3		)
Income from continuing operations after income taxes available to DuPont common stockholders	$	1,377		$	1,394
Income from discontinued operations after income taxes	$	1,968		$	95
Net income available to common stockholders	$	3,345		$	1,489
Denominator:
Weighted-average number of common shares outstanding - Basic	928,348,000			933,910,000
Dilutive effect of the company’s employee compensation plans	7,042,000			10,328,000
Weighted-average number of common shares outstanding - Diluted	935,390,000			944,238,000

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,
	2013	2012
Average number of stock options	10,384,000	10,724,000

The change in the average number of stock options that were antidilutive in the three months ended March 31, 2013 compared to the same period last year was primarily due to changes in the company’s average stock price.