DERIVATIVES (Details 4) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2010	Dec. 31, 2014
Credit Risk-Related Contingent Feature
Additional collateral required if credit rating is downgraded below investment grade	$ 0		$ 0
Foreign exchange options
Derivative [Line Items]
Term of contract	5 years	5 years
Embedded derivative liabilities
Derivative [Line Items]
Term of contract	5 years
Derivative instruments not designated as hedging instruments
Derivative [Line Items]
Notional Amount	$ 7,190,926,000		5,672,472,000
Derivative assets	77,469,000		55,788,000
Derivative liabilities	76,679,000		54,334,000
Derivative instruments not designated as hedging instruments | Foreign exchange options
Derivative [Line Items]
Notional Amount	0		85,614,000
Derivative assets	0		6,136,000
Derivative liabilities	0		0
Derivative instruments not designated as hedging instruments | Embedded derivative liabilities
Derivative [Line Items]
Notional Amount	0		47,838,000
Derivative assets	0		0
Derivative liabilities	0		3,392,000
Derivative instruments not designated as hedging instruments | Interest rate swaps and caps
Derivative [Line Items]
Notional Amount	6,494,900,000		4,858,391,000
Derivative assets	67,215,000		41,534,000
Derivative liabilities	67,325,000		41,779,000
Notional amount of derivative assets	3,250,000,000		2,450,000,000
Notional amount of derivative liabilities	3,250,000,000		2,400,000,000
Derivative instruments not designated as hedging instruments | Short-term foreign exchange contracts
Derivative [Line Items]
Notional Amount	653,000,000		680,600,000
Derivative assets	10,300,000		8,100,000
Derivative liabilities	9,400,000		9,200,000
Derivative instruments not designated as hedging instruments | Credit risk participation agreements (“RPA”)
Derivative [Line Items]
Notional Amount	43,033,000		0
Derivative assets	0		0
Derivative liabilities	4,000		$ 0
Interest rate derivative exposure	$ 257,000
Weighted average remaining maturity	3 years 2 months 12 days
Long | Derivative instruments not designated as hedging instruments | Credit risk participation agreements (“RPA”)
Derivative [Line Items]
Notional Amount	$ 33,700,000
Short | Derivative instruments not designated as hedging instruments | Credit risk participation agreements (“RPA”)
Derivative [Line Items]
Notional Amount	$ 9,300,000