PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Net Periodic Benefit Cost and Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income for All Significant Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended												1 Months Ended	3 Months Ended
	Dec. 31, 2012 Defined Benefit Pension Plans [Member]		Dec. 31, 2011 Defined Benefit Pension Plans [Member]		Dec. 31, 2010 Defined Benefit Pension Plans [Member]		Dec. 31, 2012 Other Postretirement Benefits [Member]		Dec. 31, 2011 Other Postretirement Benefits [Member]		Dec. 31, 2010 Other Postretirement Benefits [Member]		Jun. 30, 2010 Styron [Member]	Dec. 31, 2012 4Q12 Restructuring [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 378		$ 347		$ 309		$ 17		$ 15		$ 15
Interest cost	1,093		1,121		1,098		92		100		111
Expected return on plan assets	(1,262)		(1,305)		(1,212)		(1)		(6)		(10)
Amortization of prior service cost (credit)	26		28		28		(4)		(1)		0
Amortization of unrecognized loss (gain)	519		374		268		1		1		(1)
Curtailment/settlement/other	0	[1],[2]	(4)	[1],[2]	11	[1],[2]	9	[1],[2]	0	[1],[2]	3	[1],[2]	11	9
Net periodic benefit cost	754		561		502		114		109		118
Net loss	3,135		2,009		591		163		20		59
Prior service cost	0		0		2		0		0		0
Amortization of prior service (cost) credit	(26)		(28)		(36)		4		1		(3)
Amortization of unrecognized (loss) gain	(519)		(370)		(271)		(1)		(1)		1
Total recognized in other comprehensive loss	2,590		1,611		286		166		20		57
Total recognized in net periodic benefit cost and other comprehensive loss	$ 3,344		$ 2,172		$ 788		$ 280		$ 129		$ 175

[1] Included $11 million of curtailment and settlement costs recorded in 2010 related to the divestiture of Styron (see Note 5).

[2] Included $9 million of curtailment costs recorded in 2012 related to the 4Q12 Restructuring plan (see Note 3).