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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) (USD $)
6 Months Ended
Jun. 30, 2014
Embedded_Derivative_Instruments
Jun. 30, 2013
Dec. 31, 2013
Jun. 30, 2014
Senior notes due 2020 [Member]
Dec. 31, 2013
Senior notes due 2020 [Member]
Nov. 19, 2010
Senior notes due 2020 [Member]
Derivative Instruments, Gain (Loss) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage       4.625%   4.625%
Debt Instrument, Face Amount         $ 600,000,000  
Derivative, Basis Spread on Variable Rate 2.298%          
Fair Value Hedges, Net 13,400,000   0      
Number of features considered to be embedded derivative instruments 2          
Minimum percentage of market price to calculated value of zero-coupon subordinated debt at which the entity is subject to contingent cash interest 120.00%          
Embedded derivative, fair value 0          
Embedded derivative, impact on condensed consolidated statements of operations $ 0 $ 0