BUSINESS COMBINATIONS (Consolidated Assets Acquired and Liabilities Assumed) (Details) (USD $)			0 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jan. 28, 2014 SCUSA [Member]	Jan. 28, 2014 SCUSA [Member]	Jan. 28, 2014 SCUSA [Member] Stock compensation expense [Member]	Jan. 28, 2014 SCUSA [Member] Noncontrolling interest [Member]
Business Acquisition [Line Items]
Fair value of noncontrolling interest in SCUSA				$ 3,273,265,000
Fair value of SCUSA employee vested stock options				210,181,000
Fair value of SHUSA remaining ownership interest in SCUSA				5,063,881,000
Fair value of equity-related interests in SCUSA				8,547,327,000
Recognized amounts of identifiable assets acquired and liabilities assumed:
Cash and cash equivalents				11,075,000
Restricted cash				1,704,906,000
Loan receivables - held for sale				990,137,000
Loan receivables - retail installment contracts				19,870,790,000
Loan receivables from dealers				102,689,000
Loan receivables - unsecured				1,009,896,000
Premises and equipment				74,998,000
Leased vehicles, net				2,518,285,000
Intangibles				768,750,000
Miscellaneous receivables and other assets				1,061,351,000
Deferred tax asset				7,137,000
Borrowings and other debt obligations				(24,497,607,000)
Accounts payable and accrued liabilities				(551,924,000)
Total identifiable net assets				3,070,483,000
Goodwill	8,901,273,000	3,431,481,000		5,476,844,000
Stock options awards outstanding, fair value				354,300,000	144,100,000	210,200,000
Stock compensation expense immediately recognized			$ 82,600,000