INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Jun. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Effective tax rate	29.90%	29.70%	29.80%	29.20%
Federal statutory rate			35.00%
Discrete adjustments			$ 3.2	$ 2.1
Unrecognized tax benefits	20.1		20.1		20.9
Deferred tax asset					23.1
Unrecognized tax benefits that would impact effective tax rate	20.2		20.2		19.7
Significant change in unrecognized tax benefits that is reasonably possible	15.5		15.5
Liability for interest related to uncertain tax positions	8.1		8.1		11.4
Decrease in interest related to unrecognized tax benefits			$ (3.3)