FAIR VALUE (Reconciliation of Assets and Liabilities Using Level 3 Inputs) (Details) (Level 3 [Member], Recurring [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	$ 2,644,803		$ 182,541		$ 194,891		$ 150,608
Gains in other comprehensive income	(849)		(1,123)		1,021		10,701
Gains/(losses) in earnings	111,333		9,818		462,741		18,283
Additions/Issuances	85,621		8,489		2,062,333		32,535
Settlements	(506,416)	[1]	(5,760)	[2]	(1,557,954)	[1]	(18,162)	[2]
Transfers into level 3					1,171,460
Balance, end of period	2,334,492		193,965		2,334,492		193,965
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	(2,817)		(3,152)		(14,384)		30,181
Investments Available-for-sale [Member]
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	1,243,872		54,369		52,940		43,374
Gains in other comprehensive income	(849)		(1,123)		1,021		10,701
Gains/(losses) in earnings	0		0		0		0
Additions/Issuances	69,543		0		171,869		0
Settlements	(138,107)	[1]	(424)	[2]	(222,831)	[1]	(1,253)	[2]
Transfers into level 3					1,171,460
Balance, end of period	1,174,459		52,822		1,174,459		52,822
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	0		0		0		0
Retail Installment Contracts Held for Investment [Member]
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	1,273,072				0
Gains in other comprehensive income	0				0
Gains/(losses) in earnings	116,177				475,607
Additions/Issuances	0				1,870,383
Settlements	(362,737)	[1]			(1,319,478)	[1]
Transfers into level 3					0
Balance, end of period	1,026,512				1,026,512
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	0				0
MSRs [Member]
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	124,118		138,141		141,787		92,512
Gains in other comprehensive income	0		0		0		0
Gains/(losses) in earnings	(2,726)		(3,137)		(14,078)		30,229
Additions/Issuances	16,078		8,489		20,081		32,535
Settlements	(5,679)	[1]	(5,443)	[2]	(15,999)	[1]	(17,226)	[2]
Transfers into level 3					0
Balance, end of period	131,791		138,050		131,791		138,050
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	(2,726)		(3,137)		(14,078)		30,229
Derivatives [Member]
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balance, beginning of period	3,741		(9,969)		164		14,722
Gains in other comprehensive income	0		0		0		0
Gains/(losses) in earnings	(2,118)		12,955		1,212		(11,946)
Additions/Issuances	0		0		0		0
Settlements	107	[1]	107	[2]	354	[1]	317	[2]
Transfers into level 3					0
Balance, end of period	1,730		3,093		1,730		3,093
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	$ (91)		$ (15)		$ (306)		$ (48)

[1] Settlements include charge-offs, prepayments, pay downs and maturities.

[2] Settlements include prepayments, pay downs and maturities.