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DERIVATIVES AND HEDGING (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Derivative net liability position $ 8.8us-gaap_DerivativeNetLiabilityPositionAggregateFairValue $ 6.3us-gaap_DerivativeNetLiabilityPositionAggregateFairValue
Collateral posted $ 13.4us-gaap_CollateralAlreadyPostedAggregateFairValue $ 11.1us-gaap_CollateralAlreadyPostedAggregateFairValue