DERIVATIVE INSTRUMENTS (Summary of Fair Value in Balance Sheet for Derivatives Designated Hedging Instruments) (Parenthetical) (Detail) (Interest Rate Swap, USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Interest Rate Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional amount of interest rate derivatives	$ 131.3	$ 139.7
Reduction in notional amount of interest rate derivatives in next twelve months	$ 14.1