INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
INCOME TAXES
Estimated period to conclude appeals process for protesting certain unfavorable adjustments in IRS audit			12 months
Decrease in total unrecognized tax benefits due to unfavorable adjustments to the entity's 2003 through 2007 reported taxable incomes			$ 16
Effective income tax rates (as a percent)	32.70%	33.50%	32.80%	31.90%