INCOME TAXES (Tax Credit Carryforward) (Details) (USD $) In Millions, unless otherwise specified			12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 U.S. foreign tax credit carryforwards [Member]	Dec. 31, 2011 U.S. minimum tax credits carrryforwards [Member]	Dec. 31, 2011 Congolese Net Operating Loss Carryforwards [Member]	Dec. 31, 2011 U.S. state net operating loss carryforwards [Member]	Dec. 31, 2011 Spanish net operating loss carryforwards [Member]
Tax credit carryforward [Line Items]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	$ 2,011	$ 1,837
Tax credit carryforward, amount					560	468	541
Tax credit carryforward, expiration dates			between 2012 and 2021	indefinitely, but may be used only to the extent that regular tax exceeds the alternative minimum tax in any given year.	indefinitely	between 2012 and 2031	between 2012 and 2026
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax	$ 406	$ 413