DERIVATIVES (Income Statement Effect) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Cross currency swaps [Member] | Miscellaneous income [Member] | Fair value hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	$ 1,454	$ (7)	$ 773	$ 1,739
Interest rate swaps [Member] | Miscellaneous income [Member] | Fair value hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	(1,488)	0	(753)	0
Interest rate swaps [Member] | Net interest income [Member] | Cash flow hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	(13,782)	(17,578)	(27,467)	(35,311)
Forward commitments to sell loans [Member] | Mortgage banking income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	(3,243)	40,616	(5,252)	40,360
Interest rate lock commitments [Member] | Mortgage banking income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	2,364	(21,148)	3,545	(24,868)
Mortgage servicing rghts [Member] | Mortgage banking income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	2,629	51	(5,132)	870
Customer related derivatives [Member] | Miscellaneous income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	3,548	7,155	3,661	9,544
Foreign exchange [Member] | Miscellaneous income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	419	(632)	(492)	(1,702)
SCUSA derivatives [Member] | Miscellaneous income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	5,114	0	18,139	0
SCUSA derivatives [Member] | Net interest income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	(2,141)	0	(3,980)	0
Other [Member] | Miscellaneous income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	(661)	0	(1,309)	0
Other [Member] | Net interest income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	0	(2,418)	0	(3,121)
Other [Member] | Non-interest income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	$ 0	$ (15,508)	$ 0	$ (15,508)