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DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS, Impact and Location of Derivative Instruments within Consolidated Statements of Income (Details) (Derivatives Not Designated as Hedging Instruments [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Derivative Instruments, Gain (Loss) Recognized in Income [Abstract]        
Amount of gain (loss) recognized $ 19,206 $ (16,320) $ (52,510) $ (129,159)
Interest Rate Swap Contracts [Member] | Loss on Interest Rate Swap Contracts, Net [Member]
       
Derivative Instruments, Gain (Loss) Recognized in Income [Abstract]        
Amount of gain (loss) recognized 0 (183) 0 (1,828)
Prepaid Forward Contracts [Member] | Gain (Loss) On Equity Derivative Contracts, Net [Member]
       
Derivative Instruments, Gain (Loss) Recognized in Income [Abstract]        
Amount of gain (loss) recognized $ 19,206 $ (16,137) $ (52,510) $ (127,331)