Earnings Per Share of Common Stock (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Earnings Per Share of Common Stock Reconciliation Table

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2011			2010			2011			2010
Numerator:
Net income attributable to DuPont	$	452		$	367		$	3,101		$	2,655
Preferred dividends	(3		)	(3		)	(8		)	(8		)
Net income available to DuPont common stockholders	$	449		$	364		$	3,093		$	2,647
Denominator:
Weighted-average number of common shares - Basic	932,356,000			908,366,000			929,369,000			906,991,000
Dilutive effect of the company’s employee    compensation plans	11,129,000			10,134,000			13,443,000			7,996,000
Weighted-average number of common shares - Diluted	943,485,000			918,500,000			942,812,000			914,987,000

Average Number of Antidilutive Stock Options

The following average number of stock options were antidilutive, and therefore, were not included in the diluted earnings per share calculations:

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2011	2010	2011	2010
Average number of stock options	8,678,000	47,108,000	2,904,000	56,845,000