Employee Separation / Asset Related Charges, Net (Narrative) (Details) (USD $) In Millions	3 Months Ended		9 Months Ended		3 Months Ended					9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Other Segment [Member] Restructuring Program 2011 [Member]	Sep. 30, 2011 Industrial Biosciences [Member] Restructuring Program 2011 [Member]	Sep. 30, 2011 Nutrition and Health [Member] Restructuring Program 2011 [Member]	Sep. 30, 2011 Restructuring Program 2011 [Member]	Sep. 30, 2011 Restructuring Program 2011 [Member] Employee Separation Costs [Member]	Sep. 30, 2011 Restructuring Program 2011 [Member] Employee Separation Costs [Member]	Sep. 30, 2011 Restructuring Program 2009 [Member]	Dec. 31, 2010 Restructuring Program 2009 [Member]	Sep. 30, 2011 Restructuring Program 2009 [Member] Employee Separation Costs [Member]	Dec. 31, 2010 Restructuring Program 2009 [Member] Employee Separation Costs [Member]
Outstanding restructuring liability, prior activities	$ 52		$ 52						$ 35	$ 35	$ 12	$ 47	$ 12	$ 46
Restructuring Charges	$ 36	$ 0	$ 36	$ 0	$ 18	$ 8	$ 10	$ 36	$ 36	$ 36