LOANS AND ALLOWANCE FOR CREDIT LOSSES (Narrative) (Details) (USD $)	6 Months Ended						6 Months Ended		12 Months Ended	0 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013		Jun. 30, 2014 Retail installment contracts [Member]	Jun. 30, 2014 Performing [Member]	Dec. 31, 2013 Performing [Member]	Aug. 06, 2014 Subsequent Event [Member]	Jun. 30, 2014 FNMA [Member]	Jun. 30, 2014 FNMA [Member] Multi-family loans [Member]	Jun. 30, 2014 Loans receivable [Member]	Dec. 31, 2013 Loans receivable [Member]
Loans Receivable [Line Items]
Loans pledged as collateral	$ 55,000,000,000				$ 36,200,000,000
Direct and leveraged lease financing amount	1,100,000,000				1,000,000,000
Loans held-for-sale	290,407,000	[1]			128,949,000	[1]
Accrued interest receivable	527,646,000				195,782,000								471,800,000	135,300,000
Repurchase amount of loans											1,500,000,000	816,500,000
Loans transferred from held for investment to held for sale, net	225,262,000	[2]	14,898,000	[2]						695,000,000
Interest income earned on troubled debt restructurings								54,100,000	42,000,000
Troubled debt restructurings	$ 1,649,212,000				$ 1,003,643,000			$ 1,292,488,000	$ 656,606,000
TDRs, number of days past due after modification considered to have subsequently defaulted	90 days						120 days

[1] Recorded at the fair value option or lower of cost or fair value.

[2] The Change in Control and subsequent consolidation of SCUSA was accounted for as a non-cash transaction. See Note 3 to the Condensed Consolidated Financial Statements for detail on the Change in Control.