INCOME TAXES (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would impact effective tax rate if recognized	$ 5.1
Increases resulting from prior period tax positions related to acquistions	3.1
Reserve for interest and penalties	0.5	0.5
Significant change in unrecognized tax benefits is reasonably possible, estimated range of change, upper bound	1.2
Unrecognized Tax Benefits	5.4	5.6
State
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits, Decreases Resulting from Current Period Tax Positions	$ 0.2