DERIVATIVE INSTRUMENTS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Estimated Fair Value	$ (51,411)	$ (94,063)
Cash Flow Hedges: | Interest rate swaps
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Notional amount	478,333	503,833
Estimated Fair Value	(42,078)	(90,618)
Free-Standing Derivatives: | Commodity swaps
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Estimated Fair Value	1,493	7,056
Free-Standing Derivatives: | Credit default swaps-protection sold
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Estimated Fair Value		19
Free-Standing Derivatives: | Credit default swaps-protection purchased
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Notional amount	(100,000)	(47,321)
Estimated Fair Value	(2,019)	(1,140)
Free-Standing Derivatives: | Foreign exchange forward contracts
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Notional amount	(320,380)	(338,313)
Estimated Fair Value	(25,258)	(20,975)
Free-Standing Derivatives: | Foreign exchange options
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Notional amount	129,900	130,207
Estimated Fair Value	8,941	8,277
Free-Standing Derivatives: | Common stock warrants
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Estimated Fair Value	945	3,318
Free-Standing Derivatives: | Total Rate of Return Swaps
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Estimated Fair Value	(229)
Free-Standing Derivatives: | Options
Summary of aggregate notional amount and estimated net fair value of the derivative instruments
Estimated Fair Value	$ 6,794