DERIVATIVES (Other Derivatives) (Details) (USD $)																																													1 Months Ended
	Jun. 30, 2014	Dec. 31, 2013		Jun. 30, 2014 Warrant [Member]	Dec. 31, 2013 Warrant [Member]	Jun. 30, 2014 Other [Member]	Dec. 31, 2013 Other [Member]		Jun. 30, 2014 Foreign exchange contracts [Member]	Dec. 31, 2013 Foreign exchange contracts [Member]		Jun. 30, 2014 Interest rate swap agreements [Member]	Dec. 31, 2013 Interest rate swap agreements [Member]		Jun. 30, 2014 Interest rate cap agreements [Member]	Dec. 31, 2013 Interest rate cap agreements [Member]		Jun. 30, 2014 Option for interest rate cap agreements [Member]	Dec. 31, 2013 Option for interest rate cap agreements [Member]		Jun. 30, 2014 Mortgage banking derivatives [Member]	Dec. 31, 2013 Mortgage banking derivatives [Member]		Jun. 30, 2014 Mortgage banking derivatives [Member] Forward commitments to sell loans [Member]	Dec. 31, 2013 Mortgage banking derivatives [Member] Forward commitments to sell loans [Member]		Jun. 30, 2014 Mortgage banking derivatives [Member] Interest rate lock commitments [Member]	Dec. 31, 2013 Mortgage banking derivatives [Member] Interest rate lock commitments [Member]		Jun. 30, 2014 Mortgage banking derivatives [Member] Mortgage srvicing rights [Member]	Dec. 31, 2013 Mortgage banking derivatives [Member] Mortgage srvicing rights [Member]		Jun. 30, 2014 Customer related derivatives [Member]	Dec. 31, 2013 Customer related derivatives [Member]		Jun. 30, 2014 Customer related derivatives [Member] Swaps receive fixed [Member]	Dec. 31, 2013 Customer related derivatives [Member] Swaps receive fixed [Member]		Jun. 30, 2014 Customer related derivatives [Member] Swaps pay fixed [Member]	Dec. 31, 2013 Customer related derivatives [Member] Swaps pay fixed [Member]		Jun. 30, 2014 Customer related derivatives [Member] Other [Member]	Dec. 31, 2013 Customer related derivatives [Member] Other [Member]		Mar. 31, 2014 SCUSA [Member] Third Party [Member]	Mar. 31, 2014 SCUSA [Member] Third Party [Member] LIBOR [Member]
Derivative [Line Items]
Proceeds from issuance of debt pledged with certain bonds																																													$ 251,000,000
Basis spread on variable rate																																														75.00%
Facility term																																													1 year
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	33,252,517,000	14,748,036,000	[1]			642,727,000	291,437,000	[1]	1,193,297,000	1,253,395,000	[1]	3,168,861,000	0	[1]	6,398,207,000	0	[1]	6,398,207,000	0	[1]	796,653,000	490,395,000	[1]	332,869,000	169,608,000	[1]	218,784,000	75,787,000	[1]	245,000,000	245,000,000	[1]	14,654,565,000	12,712,809,000	[1]	6,688,484,000	5,665,350,000	[1]	6,673,094,000	5,661,555,000	[1]	1,292,987,000	1,385,904,000	[1]
Asset derivatives, Fair value	279,868,000	251,009,000	[1]			5,912,000	4,764,000	[1]	7,593,000	11,631,000	[1]	0	0	[1]	46,631,000	0	[1]	0	0	[1]	4,814,000	8,803,000	[1]	0	2,101,000	[1]	4,092,000	547,000	[1]	722,000	6,155,000	[1]	214,918,000	225,811,000	[1]	191,759,000	166,871,000	[1]	20,334,000	54,693,000	[1]	2,825,000	4,247,000	[1]
Liability derivatives, Fair value	272,167,000	213,398,000	[1]			7,088,000	4,496,000	[1]	6,199,000	9,745,000	[1]	24,240,000	0	[1]	0	0	[1]	46,677,000	0	[1]	3,339,000	488,000	[1]	3,151,000	0	[1]	0	0	[1]	188,000	488,000	[1]	184,624,000	198,669,000	[1]	7,666,000	28,561,000	[1]	174,726,000	166,473,000	[1]	2,232,000	3,635,000	[1]
Fair value of warrants	$ 287,667,000	$ 239,311,000		$ 0	$ 0

[1] Balances at December 31, 2013 do not include SCUSA.