Consolidated Income Statements (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net sales	$ 37,961	$ 31,505	$ 26,109
Other income, net	758	1,228	1,219
Total	38,719	32,733	27,328
Cost of goods sold and other operating charges	27,814	23,146	19,708
Selling, general and administrative expenses	4,170	3,669	3,440
Research and development expense	1,956	1,651	1,378
Interest expense	447	590	408
Employee separation / asset related charges, net	50	(34)	210
Total	34,437	29,022	25,144
Income before income taxes	4,282	3,711	2,184
Provision for income taxes	772	659	415
Net income	3,510	3,052	1,769
Less: Net income attributable to noncontrolling interests	36	21	14
Net income attributable to DuPont	$ 3,474	$ 3,031	$ 1,755
Basic earnings per share of common stock	$ 3.73	$ 3.32	$ 1.93
Diluted earnings per share of common stock	$ 3.68	$ 3.28	$ 1.92