Consolidated Income Statements (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net sales	$ 11,230	$ 10,034
Other income, net	26	25
Total	11,256	10,059
Cost of goods sold and other operating charges	7,527	6,831
Selling, general and administrative expenses	1,169	1,027
Research and development expense	505	399
Interest expense	114	100
Total	9,315	8,357
Income before income taxes	1,941	1,702
Provision for income taxes	441	258
Net income	1,500	1,444
Less: Net income attributable to noncontrolling interests	12	13
Net income attributable to DuPont	$ 1,488	$ 1,431
Basic earnings per share of common stock	$ 1.59	$ 1.54
Diluted earnings per share of common stock	$ 1.57	$ 1.52
Dividends per share of common stock	$ 0.41	$ 0.41