GOODWILL AND OTHER INTANGIBLE ASSETS (Goodwill By Operating Segment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended						12 Months Ended		12 Months Ended		12 Months Ended																									3 Months Ended	12 Months Ended						12 Months Ended				12 Months Ended						12 Months Ended				12 Months Ended						12 Months Ended			3 Months Ended	9 Months Ended	12 Months Ended		3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009		Dec. 31, 2010 Styron [Member]	Jun. 17, 2010 Styron [Member]	Dec. 31, 2010 Powder Coatings [Member]	Jun. 02, 2010 Powder Coatings [Member]	Dec. 31, 2010 Hydrocarbon Resins [Member]	Oct. 02, 2010 Hydrocarbon Resins [Member]	Dec. 31, 2011 Sale of an Automotive Systems Business [Member]	Dec. 31, 2011 Electronic and Functional Materials [Member]	Dec. 31, 2010 Electronic and Functional Materials [Member]	Dec. 31, 2009 Electronic and Functional Materials [Member]		Dec. 31, 2010 Electronic and Functional Materials [Member] Styron [Member]	Dec. 31, 2010 Electronic and Functional Materials [Member] Powder Coatings [Member]	Dec. 31, 2010 Electronic and Functional Materials [Member] Hydrocarbon Resins [Member]	Dec. 31, 2011 Electronic and Functional Materials [Member] Sale of an Automotive Systems Business [Member]	Dec. 31, 2011 Coatings and Infrastructure Solutions [Member]	Dec. 31, 2010 Coatings and Infrastructure Solutions [Member]	Dec. 31, 2009 Coatings and Infrastructure Solutions [Member]		Dec. 31, 2010 Coatings and Infrastructure Solutions [Member] Styron [Member]	Dec. 31, 2010 Coatings and Infrastructure Solutions [Member] Powder Coatings [Member]	Dec. 31, 2010 Coatings and Infrastructure Solutions [Member] Hydrocarbon Resins [Member]	Dec. 31, 2011 Coatings and Infrastructure Solutions [Member] Sale of an Automotive Systems Business [Member]	Dec. 31, 2011 Agricultural Sciences [Member]	Dec. 31, 2010 Agricultural Sciences [Member]	Dec. 31, 2009 Agricultural Sciences [Member]		Dec. 31, 2010 Agricultural Sciences [Member] Styron [Member]	Dec. 31, 2010 Agricultural Sciences [Member] Powder Coatings [Member]	Dec. 31, 2010 Agricultural Sciences [Member] Hydrocarbon Resins [Member]	Dec. 31, 2011 Agricultural Sciences [Member] Sale of an Automotive Systems Business [Member]	Dec. 31, 2009 Performance Materials [Member]	Dec. 31, 2011 Performance Materials [Member]	Dec. 31, 2010 Performance Materials [Member]	Dec. 31, 2009 Performance Materials [Member]		Dec. 31, 2010 Performance Materials [Member] Styron [Member]	Jun. 17, 2010 Performance Materials [Member] Styron [Member]	Dec. 31, 2010 Performance Materials [Member] Powder Coatings [Member]	Dec. 31, 2010 Performance Materials [Member] Hydrocarbon Resins [Member]	Dec. 31, 2011 Performance Materials [Member] Sale of an Automotive Systems Business [Member]	Dec. 31, 2009 Haltermann [Member]	Dec. 31, 2011 Performance Plastics [Member]	Dec. 31, 2010 Performance Plastics [Member]	Dec. 31, 2009 Performance Plastics [Member]		Dec. 31, 2010 Performance Plastics [Member] Styron [Member]	Jun. 17, 2010 Performance Plastics [Member] Styron [Member]	Dec. 31, 2010 Performance Plastics [Member] Powder Coatings [Member]	Dec. 31, 2010 Performance Plastics [Member] Hydrocarbon Resins [Member]	Dec. 31, 2011 Performance Plastics [Member] Sale of an Automotive Systems Business [Member]	Dec. 31, 2008 Polypropylene [Member]	Dec. 31, 2011 Feedstocks and Energy [Member]	Dec. 31, 2010 Feedstocks and Energy [Member]	Dec. 31, 2009 Feedstocks and Energy [Member]		Dec. 31, 2010 Feedstocks and Energy [Member] Styron [Member]	Jun. 17, 2010 Feedstocks and Energy [Member] Styron [Member]	Dec. 31, 2010 Feedstocks and Energy [Member] Powder Coatings [Member]	Dec. 31, 2010 Feedstocks and Energy [Member] Hydrocarbon Resins [Member]	Dec. 31, 2011 Feedstocks and Energy [Member] Sale of an Automotive Systems Business [Member]	Mar. 31, 2010 Rohm And Haas [Member]	Dec. 31, 2009 Rohm And Haas [Member]	Mar. 31, 2010 Rohm And Haas [Member]	Apr. 02, 2009 Rohm And Haas [Member]	Mar. 31, 2010 Rohm And Haas [Member] Electronic and Functional Materials [Member]	Mar. 31, 2010 Rohm And Haas [Member] Coatings and Infrastructure Solutions [Member]	Mar. 31, 2010 Rohm And Haas [Member] Agricultural Sciences [Member]	Mar. 31, 2010 Rohm And Haas [Member] Performance Materials [Member]	Mar. 31, 2010 Rohm And Haas [Member] Performance Plastics [Member]
Goodwill [Roll Forward]
Goodwill, gross, beginning balance		$ 13,463											$ 4,967								$ 4,118								$ 1,546									$ 1,306										$ 1,463										$ 63
Goodwill, accumulated impairments, beginning balance	(246)	(250)											0								0								0									(220)								(7)		(30)								(30)		0
Net goodwill, beginning balance	12,967	13,213										4,949	4,967							4,057	4,118							1,546	1,546								966	1,086									1,386	1,433									63	63
Divestures					(141)		(4)		(9)		(7)					0	0	(9)	0					0	(4)	0	0					0	0	0	0						(111)		0	0	(7)						(30)		0	0	0						0		0	0	0
Foreign currency impact	(42)	(92)										(15)	(9)							(16)	(57)							0	0								0	(9)									(11)	(17)									0	0
Acquisition of seed company	12											0								0								12									0										0										0
Net goodwill, ending balance	12,930	12,967	13,213									4,934	4,949	4,967						4,041	4,057	4,118						1,558	1,546	1,546						1,086	959	966	1,086								1,375	1,386	1,433								63	63	63
Goodwill, accumulated impairments, ending balance	(209)	(246)	(250)									0		0						0		0						0		0						(220)	(209)		(220)							(7)	0		(30)							(30)	0		0
Goodwill, gross, ending balance	13,139		13,463									4,934		4,967						4,041		4,118						1,558		1,546						1,306	1,168		1,306								1,375		1,463								63		63
Business Acquisition Purchase Price Allocation Goodwill Not Tax Deductible Amount																																																																		9,707		9,707	9,707
Goodwill Allocation Adjustment																																																																		99	(244)	(145)		33	47	2	4	13
Disposal Group, Including Discontinued Operation, Goodwill						141		4		9																																111										30										0
Disposal Group, Including Discontinued Operation, Intangible Assets, Net						16
Goodwill impairment loss	$ 0	$ 0	$ 7	[1]										$ 0	[1]							$ 0	[1]							$ 0	[1]					$ 7			$ 7	[1]									$ 0	[1]									$ 0	[1]

[1] See Note I for information regarding the goodwill impairment loss.