INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
INCOME TAXES
Effective income tax rates (as a percent)	25.90%	10.40%	24.80%	19.30%
Benefits from remeasurement of uncertain tax positions		$ 6.9	$ 2.3	$ 9.4
Favorable impact of the federal research credit on the effective tax rate (as a percent)					2.40%
Liability for income taxes associated with uncertain tax positions	94.9		94.9		78.0
Offsetting tax benefits associated with correlative effects of potential transfer pricing adjustments, state income taxes and timing adjustments	9.8		9.8		6.8
Net liability for income taxes associated with uncertain tax positions	$ 85.1		$ 85.1		$ 71.2