DERIVATIVE FINANCIAL INSTRUMENTS BALANCE SHEET (DETAIL) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Derivative Instruments Gain (Loss) Recognized In Other Comprehensive Income Next Twelve Months Net	$ 1
Other Current Assets [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Natural Gas Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	0	1
Other Current Assets [Member] | Nondesignated [Member] | Other Derivatives [Member] | Foreign Exchange Contract Member
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	1	2
Accounts Payable and Accrued Liabilities [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Natural Gas Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	1	4
Accounts Payable and Accrued Liabilities [Member] | Nondesignated [Member] | Other Derivatives [Member] | Natural Gas Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	0	1
Accounts Payable and Accrued Liabilities [Member] | Nondesignated [Member] | Other Derivatives [Member] | Foreign Exchange Contract Member
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	3	1
Other Comprehensive Income Member | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Natural Gas Contract [Member]
Derivatives, Fair Value [Line Items]
Gain Recognized in OCI, Effective Portion	0	1
Loss Recognized in OCI, Effective Portion	$ 1	$ 4