SUPPLEMENTARY INFORMATION (Sundry Income, Net) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Mar. 22, 2011	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Supplementary Information [Line Items]
Gain (Loss) on Sale of Property Plant Equipment		$ 5		$ 4		$ 2
Total sundry income (expense) - net		(182)		(96)		(10)
Impairment of investment in related company		131		0		0
Loss on early extinguishment of debt	(6)	0		(6)		0
Foreign exchange gain (loss)		0		(1)		1
Other - net		(14)		(18)		(1)
Net Commission Expense [Member]
Supplementary Information [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party		(35)		(34)		(31)
Dividend Income [Member]
Supplementary Information [Line Items]
Related Party Transaction, Other Revenues from Transactions with Related Party		25		7		40
Administrative and overhead fees [Member] | The Dow Chemical Company [Member]
Supplementary Information [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party		$ (32)	[1]	$ (48)	[1]	$ (21)	[1]

[1] See Note 16.