| **VARIABLE INTEREST ENTITIES**                              | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           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| **Variable Interest Entity and Securitizations [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                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| VARIABLE INTEREST ENTITIES                                  | VARIABLE INTEREST ENTITIESVIEsThe Company transfers RICs and leases into newly-formed securitization trusts ("Trusts") that then issue one or more classes of notes payable backed by collateral. The Company’s continuing involvement with the Trusts is in the form of servicing assets held by the Trusts and, generally, through holding residual interests in the Trusts. These transactions are structured without recourse. The Trusts are considered VIEs under GAAP and, when the Company holds the residual interest, are consolidated because the Company has: (a) power over the significant activities of the entity as servicer of its financial assets and (b) residual interest and, in some cases of debt securities held by the Company, an obligation to absorb losses or the right to receive benefits from the VIE which are potentially significant to the VIE. When the Company does not retain any debt or equity interests in its securitizations or subsequently sells such interests it records these transactions as sales of the associated RIC.The collateral, borrowings under credit facilities and securitization notes payable of the Company's consolidated VIEs remain on the Company's Condensed Consolidated Balance Sheets. The Company recognizes finance charges and fee income on the RICs and leased vehicles and interest expense on the debt, and records a provision for loan and lease losses to cover probable inherent losses on the contracts. All of the Trusts are separate legal entities and the collateral and other assets held by these subsidiaries are owned by them and not available to other creditors.Revolving credit facilities generally also utilize Trusts that are considered VIEs.The Company also uses a titling trust to originate and hold its leased vehicles and the associated leases in order to facilitate the pledging of leases to financing facilities or the sale of leases to other parties without incurring the costs and administrative burden of retitling the lease vehicles. This titling trust is considered a VIE.NOTE 6. VARIABLE INTEREST ENTITIES (continued)On-balance sheet VIEsThe assets of consolidated VIEs, presented based upon the legal transfer of the underlying assets in order to reflect legal ownership, that can be used to settle obligations of the consolidated VIE and the liabilities of those consolidated entities for which creditors (or beneficial interest holders) do not have recourse to our general credit were as follows:  June 30, 2016 December 31, 2015  (in thousands)Assets    Restricted cash $2,026,940 $1,842,877Loans(1) 23,499,551 23,494,541Leased vehicles, net 8,065,227 6,497,310Various other assets 580,634 630,017Total Assets $34,172,352 $32,464,745Liabilities    Notes payable $30,979,813 $30,628,837Various other liabilities 90,097 85,844Total Liabilities $31,069,910 $30,714,681(1) Includes $1.6 billion and $1.5 billion of RICs held for sale at June 30, 2016 and December 31, 2015, respectively. Certain amounts shown above are greater than the amounts shown in the corresponding line items in the accompanying Condensed Consolidated Balance Sheets due to intercompany eliminations between the VIEs and other entities consolidated by the Company. The amounts shown above are also impacted by purchase accounting marks from the “Change in Control”. For example, for most of its securitizations, the Company retains one or more of the lowest tranches of bonds. Rather than showing investment in bonds as an asset and the associated debt as a liability, these amounts are eliminated in consolidation as required by GAAP.The Company retains servicing responsibility for receivables transferred to the Trusts and receives a monthly servicing fee on the outstanding principal balance. Supplemental fees, such as late charges, for servicing the receivables are reflected in miscellaneous income. As of June 30, 2016 and December 31, 2015, the Company was servicing $28.1 billion and $27.3 billion, respectively, of RICs that have been transferred to consolidated Trusts. The remainder of the Company’s RICs remains unpledged.Below is a summary of the cash flows received from the on-balance sheet Trusts for the periods indicated:  Three-Month PeriodEnded June 30,  Six-Month Period Ended June 30,  2016 2015 2016 2015  (in thousands)Assets securitized $6,325,637 $6,085,282 $9,947,134 $10,067,137         Net proceeds from new securitizations (1) $5,118,309 $4,918,905 $7,820,313 $7,975,856Net proceeds from sale of retained bonds 128,798 — 128,798 —Cash received for servicing fees (2) 200,071 173,641 394,435 335,603Net distributions from Trusts (2) 761,480 616,342 1,391,206 1,072,395Total cash received from Trusts $6,208,658 $5,708,888 $9,734,752 $9,383,854(1)  Includes additional advances on existing securitizations.(2) These amounts are not reflected in the accompanying Condensed Consolidated Statements of Cash Flows because the cash flows are between the VIEs and other entities included in the consolidation.NOTE 6. VARIABLE INTEREST ENTITIES (continued)Off-balance sheet VIEsThe Company has completed sales to VIEs that met sale accounting treatment in accordance with the applicable guidance. Due to the nature, purpose, and activity of these transactions, the Company determined for consolidation purposes that it either does not hold potentially significant variable interests or is not the primary beneficiary as a result of the Company's limited further involvement with the financial assets. For such transactions, the transferred financial assets are removed from the Company's Condensed Consolidated Balance Sheets. In certain situations, the Company remains the servicer of the financial assets and receives servicing fees that represent adequate compensation, and may reacquire assets from the Trusts through the exercise of an optional clean-up call, as permitted through the respective servicing agreements. The Company also recognizes a gain or loss in the amount of the difference between the cash proceeds and carrying value of the assets sold. During the three-month and six-month periods endedJune 30, 2016, the Company executed no off-balance sheet securitizations with VIEs in which it has continuing involvement. As of June 30, 2016 and December 31, 2015, the Company was servicing $2.8 billion and $3.9 billion, respectively, of gross RICs in off-balance sheet securitizations. Other than repurchases of sold assets due to standard representations and warranties, the Company has no exposure to loss as a result of its involvement with these VIEs.A summary of the cash flows received from the off-balance sheet Trusts for the periods indicated is as follows:  Three-Month PeriodEnded June 30,  Six-Month Period Ended June 30,  2016 2015 2016 2015  (in thousands)Assets securitized $— $768,561 $— $768,561         Net proceeds from new securitizations $— $785,983 $— $785,983Cash received for servicing fees 13,157 6,319 28,858 11,624Total cash received from Trusts $13,157 $792,302 $28,858 $797,607 |

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| - Definition
Variable Interest Entity and Securitizations [Abstract]
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No definition available.
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| - Definition
The entire disclosure for a variable interest entity (VIE), including but not limited to, judgments and assumptions in determining whether to consolidate and in identifying the primary beneficiary, gain (loss) recognized on the initial consolidation of the VIE, terms of arrangements, amounts and classification of the VIE's assets and liabilities, and the entity's maximum exposure to loss.
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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -URI http://asc.fasb.org/extlink&oid=64801991&loc=SL6759159-111685Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=64801991&loc=d3e5728-111685Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64801991&loc=d3e5710-111685
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