INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
INCOME TAXES
Effective tax rate (as a percent)	36.10%	34.10%	36.90%	35.20%
Unrecognized tax benefits, which would affect the effective tax rate if recognized	$ 2.5		$ 2.5		$ 2.0