ACQUISITION (Details 2) (SunBelt [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2011
SunBelt [Member]
Business Acquisition [Line Items]
Sales	$ 991.4
Net income	$ 74.5
Net income per common share-basic (in dollars per share)	$ 0.93
Net income per common share-diluted (in dollars per share)	$ 0.92