FINANCIAL INSTRUMENTS (Accounting for Derivative Instruments and Hedging Activities) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010
Financial Instruments [Line Items]
Notional amount of foreign currency derivatives	$ 542	$ 827
AOCI, Net gain (loss) in net investment in foreign operations, after tax	(59)	70
Notional amount of outstanding foreign-currency denominated debt designated as net foreign investment hedges	602	1,250
Notional U.S. dollar equivalent of nondesignated foreign exchange contracts	16,945	13,944
Commodity Contract [Member]
Financial Instruments [Line Items]
AOCI, Net gain (loss) in cash flow hedging instruments	1	3
Commodity Forward Contract Crude Oil [Member]
Financial Instruments [Line Items]
Nonmonetary notional amount of price risk cash flow hedge derivatives	0.2	0.1
Commodity Forward Contract Ethane [Member]
Financial Instruments [Line Items]
Nonmonetary notional amount of price risk cash flow hedge derivatives	0.3	1.6
Commodity Forward Contract Natural Gas [Member]
Financial Instruments [Line Items]
Nonmonetary notional amount of price risk cash flow hedge derivatives	6.9	2.7
Commodity Contract Crude Oil [Member]
Financial Instruments [Line Items]
Derivative, nonmonetary notional amount	0.1	0
Commodity Contract Ethane [Member]
Financial Instruments [Line Items]
Derivative, nonmonetary notional amount	2.3	3.8
Commodity Contract Naphtha [Member]
Financial Instruments [Line Items]
Derivative, nonmonetary notional amount	53.0	0
Commodity Contract Natural Gas [Member]
Financial Instruments [Line Items]
Derivative, nonmonetary notional amount	6.2	12.0
Foreign Currency Contract [Member]
Financial Instruments [Line Items]
AOCI, Net gain (loss) in cash flow hedging instruments	6	(4)
Interest Rate Contract [Member]
Financial Instruments [Line Items]
AOCI, Net gain (loss) in cash flow hedging instruments	$ (1)	$ (2)