FAIR VALUE (Fair Value Option Disclosure) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended				6 Months Ended		0 Months Ended
	Jun. 30, 2014 Residential mortgages [Member]	Jun. 30, 2013 Residential mortgages [Member]	Jun. 30, 2014 Residential mortgages [Member]	Jun. 30, 2013 Residential mortgages [Member]	Dec. 31, 2013 Residential mortgages [Member]	Jun. 30, 2014 Residential mortgages [Member] Mortgage servicing rights [Member]	Jun. 30, 2014 Retail installment contracts held for investment [Member]	Jun. 30, 2014 Loans held for sale [Member] Residential mortgages [Member]	Jan. 28, 2014 SCUSA [Member] Retail installment contracts held for investment [Member]	Jan. 28, 2014 SCUSA [Member] Retail installment contracts held for investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Residential mortgage loans held for sale	$ 166,616		$ 166,616
Aggregate Unpaid Principal Balance, Residential mortgage loans held for sale	163,045		163,045
Difference, Residential mortgage loans held for sale	3,571		3,571
Fair Value, Nonaccrual loans	0		0
Aggregate Unpaid Principal Balance, Nonaccrual loans	0		0
Difference, Nonaccrual loans	0		0
Fair Value, Retail installment contracts held for investment							1,273,072			1,900,000
Aggregate Unpaid Principal Balance, Retail installment contracts held for investment							1,645,493			2,600,000
Difference, Retail installment contracts held for investment							(372,421)
Fair Value, Nonaccrual loans	114,400		114,400
Aggregate Unpaid Principal Balance, Nonaccrual loans	213,250		213,250
Difference, Nonaccrual loans	(98,850)		(98,850)
Threshold period for discontinuing and reversing accrual of interest							60 days	90 days	60 days
Mortgage servicing rights	124,118		124,118		141,787	124,100
Change in fair value due to valuation assumptions	$ (6,893)	$ 23,300	$ (11,352)	$ 33,366