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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative instruments designated as fair value hedges (Detail) (Interest rate swaps [Member], Interest expense [Member], Fair Value Hedging [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Interest rate swaps [Member] | Interest expense [Member] | Fair Value Hedging [Member]
     
Derivatives And Hedging Activities [Line Items]      
Gain on Instrument $ 6.1 $ 26.3 $ 1.5
Loss on Hedged Items $ (6.1) $ (26.3) $ (1.5)