Santander Consumer USA (SC) 10-Q 2 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	Santander Consumer USA Holdings Inc.
Entity Central Index Key	1,580,608
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		359,946,656

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents - $71,870 and $98,536 held at affiliates, respectively	$ 397,311	$ 160,180
Finance receivables held for sale, net	1,775,459	2,123,415
Finance receivables held for investment, net (includes $24,799 and $24,495 of loans recorded at fair value, respectively)	22,667,203	23,481,001
Restricted cash - $3,035 and $11,629 held at affiliates, respectively	2,559,246	2,757,299
Accrued interest receivable	330,554	373,274
Leased vehicles, net	9,931,283	8,564,628
Furniture and equipment, net of accumulated depreciation of $49,963 and $47,365, respectively	72,519	67,509
Federal, state and other income taxes receivable	112,794	87,352
Related party taxes receivable	467	1,087
Goodwill	74,056	74,056
Intangible assets, net of amortization of $39,265 and $33,652, respectively	31,534	32,623
Due from affiliates	26,871	31,270
Other assets	786,260	785,410
Total assets	38,765,557	38,539,104
Liabilities:
Notes payable — credit facilities	4,965,888	6,739,817
Notes payable — secured structured financings	23,258,363	21,608,889
Notes payable — related party	2,369,850	2,975,000
Accrued interest payable	38,012	33,346
Accounts payable and accrued expenses	336,390	379,021
Deferred tax liabilities, net	1,515,932	1,278,064
Due to affiliates	67,059	50,620
Other liabilities	328,829	235,728
Total liabilities	32,880,323	33,300,485
Commitments and contingencies (Notes 5 and 10)
Equity:
Common stock, $0.01 par value - 1,100,000,000 shares authorized; 359,873,905 and 359,002,145 shares issued and 359,750,398 and 358,907,550 shares outstanding, respectively	3,598	3,589
Additional paid-in capital	1,672,392	1,657,611
Accumulated other comprehensive income, net	27,481	28,259
Retained earnings	4,181,763	3,549,160
Total stockholders’ equity	5,885,234	5,238,619
Total liabilities and equity	38,765,557	38,539,104
Assets
Restricted cash	1,969,094	2,087,177
Finance receivables held for sale, net	832,394	1,012,277
Finance receivables held for investment, net	21,902,383	22,919,312
Leased vehicles, net	9,931,283	8,564,628
Various other assets	634,338	686,253
Total assets	35,269,492	35,269,647
Liabilities
Notes payable	28,651,897	31,659,203
Various other liabilities	153,942	91,234
Total liabilities	$ 28,805,839	$ 31,750,437

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Cash and cash equivalents held for affiliates	$ 71,870	$ 98,536
Loans recorded at fair value	24,799	24,495
Restricted cash held for affiliates	3,035	11,629
Accumulated depreciation	49,963	47,365
Accumulated amortization	$ 39,265	$ 33,652
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized	1,100,000,000	1,100,000,000
Common stock, shares issued	359,873,905	359,002,145
Common stock, shares outstanding	359,750,398	358,907,550

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Interest on finance receivables and loans	$ 1,185,059	$ 1,246,386	$ 3,626,497	$ 3,804,322
Leased vehicle income	457,932	388,501	1,305,429	1,086,651
Other finance and interest income	6,385	3,638	15,415	11,440
Total finance and other interest income	1,649,376	1,638,525	4,947,341	4,902,413
Interest expense — Including $35,132, $28,131, $109,648 and $88,814 to affiliates, respectively	250,674	207,175	711,134	590,504
Leased vehicle expense	339,581	252,730	927,976	717,230
Net finance and other interest income	1,059,121	1,178,620	3,308,231	3,594,679
Provision for credit losses	536,447	610,398	1,692,015	1,782,489
Net finance and other interest income after provision for credit losses	522,674	568,222	1,616,216	1,812,190
Profit sharing	5,945	6,400	22,333	35,640
Net finance and other interest income after provision for credit losses and profit sharing	516,729	561,822	1,593,883	1,776,550
Investment gains (losses), net — Including $29,081, $346, $22,900, and $346 from affiliates, respectively	(52,592)	(106,050)	(228,513)	(276,415)
Servicing fee income — Including $2,739, $4,049, $8,627 and $13,180 from affiliates, respectively	28,673	36,447	92,310	123,929
Fees, commissions, and other — Including $225, $225, $830 and $675 from affiliates, respectively	82,866	96,285	275,025	294,028
Total other income	58,947	26,682	138,822	141,542
Compensation expense	134,169	128,056	398,325	371,242
Repossession expense	66,877	75,920	205,445	217,816
Other operating costs — Including $1,037, ($871), $3,403, and $3,615 to affiliates, respectively	96,857	80,508	281,626	258,509
Total operating expenses	297,903	284,484	885,396	847,567
Income before income taxes	277,773	304,020	847,309	1,070,525
Income tax expense	78,385	90,473	239,819	365,334
Net income	199,388	213,547	607,490	705,191
Other comprehensive income (loss):
Change in unrealized gains (losses) on cash flow hedges, net of tax of $201, (14,397), $297, and $17,081, respectively	(379)	24,168	(778)	(28,723)
Comprehensive income	$ 199,009	$ 237,715	$ 606,712	$ 676,468
Net income per common share (basic) (in usd per share)	$ 0.55	$ 0.60	$ 1.69	$ 1.97
Net income per common share (diluted) (in usd per share)	$ 0.55	$ 0.59	$ 1.69	$ 1.96
Weighted average common shares (basic) (in shares)	359,619,083	358,343,781	359,397,063	358,179,618
Weighted average common shares (diluted) (in shares)	360,460,353	360,087,749	360,069,449	359,635,034

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Interest expense to affiliates	$ 35,132	$ 28,131	$ 109,648	$ 88,814
Investment losses, net from affiliates	29,081	346	22,900	346
Servicing fee income from affiliates	2,739	4,049	8,627	13,180
Fees, commissions and other from affiliates	225	225	830	675
Other operating costs to affiliates	1,037	(871)	3,403	3,615
Change in unrealized gains (losses) on cash flow hedges, tax	$ 201	$ (14,397)	$ 297	$ 17,081

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2015		357,946,000
Beginning balance at Dec. 31, 2015	$ 4,432,549	$ 3,579	$ 1,644,151	$ 2,125	$ 2,782,694
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued in connection with employee incentive compensation plans (in shares)		410,000
Stock issued in connection with employee incentive compensation plans	2,019	$ 5	2,014
Stock-based compensation expense	7,013		7,013
Tax sharing with affiliate	(392)		(392)
Net income	705,191				705,191
Other comprehensive income (loss), net of taxes	(28,723)			(28,723)
Ending balance (in shares) at Sep. 30, 2016		358,356,000
Ending balance at Sep. 30, 2016	5,117,657	$ 3,584	1,652,786	(26,598)	3,487,885
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	213,547
Ending balance (in shares) at Sep. 30, 2016		358,356,000
Ending balance at Sep. 30, 2016	5,117,657	$ 3,584	1,652,786	(26,598)	3,487,885
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative-effect adjustment upon adoption of ASU 2016-09 (Note 1)	$ 26,552		1,439		25,113
Beginning balance (in shares) at Dec. 31, 2016	358,907,550	358,908,000
Beginning balance at Dec. 31, 2016	$ 5,238,619	$ 3,589	1,657,611	28,259	3,549,160
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued in connection with employee incentive compensation plans (in shares)		871,000
Stock issued in connection with employee incentive compensation plans	1,591	$ 9	1,582
Stock-based compensation expense	12,166		12,166
Purchase of treasury stock (in shares)		(29,000)
Purchase of treasury stock	(404)		(404)
Tax sharing with affiliate	(2)		(2)
Net income	607,490				607,490
Other comprehensive income (loss), net of taxes	$ (778)			(778)
Ending balance (in shares) at Sep. 30, 2017	359,750,398	359,750,000
Ending balance at Sep. 30, 2017	$ 5,885,234	$ 3,598	1,672,392	27,481	4,181,763
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 199,388
Ending balance (in shares) at Sep. 30, 2017	359,750,398	359,750,000
Ending balance at Sep. 30, 2017	$ 5,885,234	$ 3,598	$ 1,672,392	$ 27,481	$ 4,181,763

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 607,490	$ 705,191
Adjustments to reconcile net income to net cash provided by operating activities
Derivative mark to market	(7,694)	4,653
Provision for credit losses	1,692,015	1,782,489
Depreciation and amortization	1,013,738	788,084
Accretion of discount	(193,473)	(281,295)
Originations and purchases of receivables held for sale	(2,773,407)	(3,018,287)
Proceeds from sales of and collections on receivables held for sale	3,032,688	2,460,399
Change in revolving personal loans	(139,358)	(471,061)
Investment losses, net	228,513	276,415
Stock-based compensation	12,166	7,013
Deferred tax expense	264,720	363,036
Changes in assets and liabilities:
Accrued interest receivable	21,729	13,591
Accounts receivable	(6,049)	7,161
Federal income tax and other taxes	(24,823)	176,978
Other assets	(61,765)	(31,572)
Accrued interest payable	(86)	6,657
Other liabilities	(28,176)	(106,879)
Due to/from affiliates	27,858	(6,440)
Net cash provided by operating activities	3,666,086	2,676,133
Cash flows from investing activities:
Originations of and disbursements on finance receivables held for investment	(8,448,231)	(9,769,563)
Purchases of portfolios of finance receivables held for investment	(228,843)	(427,384)
Collections on finance receivables held for investment	7,744,969	7,875,592
Proceeds from sale of loans held for investment	135,577	823,877
Leased vehicles purchased	(4,718,388)	(4,624,096)
Manufacturer incentives received	787,093	1,081,399
Proceeds from sale of leased vehicles	1,807,729	1,135,723
Change in revolving personal loans	57,761	362,671
Purchases of furniture and equipment	(15,113)	(19,971)
Sales of furniture and equipment	747	1,985
Change in restricted cash	191,842	(460,749)
Other investing activities	(5,852)	(6,165)
Net cash used in investing activities	(2,690,709)	(4,026,681)
Cash flows from financing activities:
Proceeds from notes payable related to secured structured financings — net of debt issuance costs	12,272,344	9,637,933
Payments on notes payable related to secured structured financings	(10,638,153)	(9,130,280)
Proceeds from unsecured notes payable	6,165,000	6,718,900
Payments on unsecured notes payable	(4,885,577)	(6,968,900)
Proceeds from notes payable	15,466,611	15,885,951
Payments on notes payable	(19,123,441)	(14,738,924)
Proceeds from stock option exercises, gross	4,970	2,848
Net cash provided by (used in) financing activities	(738,246)	1,407,528
Net increase in cash and cash equivalents	237,131	56,980
Cash — Beginning of period	160,180	18,893
Cash — End of period	397,311	75,873
Noncash investing and financing transactions:
Transfer of secured notes payable to (from) unsecured notes payable	$ (495,991)	$ 0

Description of Business, Basis

Description of Business, Basis of Presentation, and Significant Accounting Policies and Practices	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business, Basis of Presentation, and Significant Accounting Policies and Practices	Description of Business, Basis of Presentation, and Significant Accounting Policies and Practices Santander Consumer USA Holdings Inc., a Delaware corporation (together with its subsidiaries, SC or the Company), is the holding company for Santander Consumer USA Inc., an Illinois corporation (SC Illinois), and its subsidiaries, a specialized consumer finance company focused on vehicle finance and third-party servicing. The Company’s primary business is the indirect origination and securitization of retail installment contracts principally through manufacturer-franchised dealers in connection with their sale of new and used vehicles to retail consumers. In conjunction with a ten -year private label financing agreement (the Chrysler Agreement) with Fiat Chrysler Automobiles US LLC (FCA) that became effective May 1, 2013, the Company offers a full spectrum of auto financing products and services to FCA customers and dealers under the Chrysler Capital brand. These products and services include consumer retail installment contracts and leases, as well as dealer loans for inventory, construction, real estate, working capital and revolving lines of credit. The Company also originates vehicle loans through a web-based direct lending program, purchases vehicle retail installment contracts from other lenders, and services automobile and recreational and marine vehicle portfolios for other lenders. Additionally, the Company has several relationships through which it provides personal loans, private-label credit cards and other consumer finance products. As of September 30, 2017 , the Company was owned approximately 58.7% by Santander Holdings USA, Inc. (SHUSA), a subsidiary of Banco Santander, S.A. (Santander), approximately 31.6% by public shareholders, approximately 9.7% by DDFS LLC, an entity affiliated with Thomas G. Dundon, the Company’s former Chairman and CEO, and an insignificant amount held by other holders, primarily members of senior management. Basis of Presentation The accompanying condensed consolidated financial statements include the accounts of the Company and its subsidiaries, including certain Trusts, which are considered variable interest entities (VIEs). The Company also consolidates other VIEs for which it was deemed to be the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation. The accompanying condensed consolidated financial statements as of September 30, 2017 and December 31, 2016 , and for the three and nine months ended September 30, 2017 and 2016 , have been prepared in accordance with U.S. GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, these financial statements contain all adjustments, consisting of normal recurring adjustments, necessary for the fair statement of the financial position, results of operations and cash flows for the periods indicated. Results of operations for the periods presented herein are not necessarily indicative of results of operations for the entire year. These financial statements should be read in conjunction with the 2016 Annual Report on Form 10-K. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and the disclosures of contingent assets and liabilities, as of the date of the financial statements and the amount of revenue and expenses during the reporting periods. Actual results could differ from those estimates and those differences may be material. These estimates include the determination of credit loss allowance, discount accretion, impairment, fair value, expected end-of-term lease residual values, values of repossessed assets, and income taxes. These estimates, although based on actual historical trends and modeling, may potentially show significant variances over time. Business Segment Information The Company has one reportable segment: Consumer Finance, which includes the Company’s vehicle financial products and services, including retail installment contracts, vehicle leases, and dealer loans, as well as financial products and services related to motorcycles, recreational vehicles, and marine vehicles. It also includes the Company’s personal loan and point-of-sale financing operations. Accounting Policies There have been no material changes in the Company's accounting policies from those disclosed in Part II, Item 8 - Financial Statements and Supplementary Data in the 2016 Annual Report on Form 10-K. Recently Adopted Accounting Standards Since January 1, 2017, the Company adopted the following Financial Accounting Standards Board (FASB) Accounting Standards Updates (ASUs): • ASU 2016-09, Compensation - Stock Compensation (Topic 718) . This new guidance simplifies certain aspects related to income taxes, the Statement of Cash Flows (SCF), and forfeitures when accounting for share-based payment transactions. ASU 2016-09 eliminates the requirement to recognize excess tax benefits in APIC pools, and instead requires companies to record all excess tax benefits and deficiencies at settlement, vesting or expiration in the income statement as provision for income taxes. At adoption of ASU 2016-09 on January 1, 2017, the cumulative-effect for previously unrecognized excess tax benefits totaled $26,552 net of tax, and was recognized, as an increase, through an adjustment in beginning retained earnings. The Company recorded excess tax deficiency, net of tax of $671 and $430 in the provision for income taxes rather than as an increase to additional paid-in capital for the three and nine months ended September 30, 2017 , respectively, on a prospective basis. Therefore, the prior period presented has not been adjusted. All excess tax benefits along with other income tax cash flows are now being classified as operating activities rather than financing activities in the SCF on a prospective basis. In addition, the Company changed its accounting policy on forfeitures from previously recognizing forfeitures based on estimating the number of awards expected to be forfeited to electing to recognize forfeiture of awards as they occur to simplify the accounting for forfeitures. This resulted in a cumulative adjustment, as a decrease to, beginning retained earnings of $1,439 . • ASU 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships . The new guidance clarifies that a change in the counterparties to a derivative contract, i.e., a novation, in and of itself, does not require the de-designation of a hedging relationship. An entity will, however, still need to evaluate whether it is probable that the counterparty will perform under the contract as part of its ongoing effectiveness assessment for hedge accounting. The adoption of this ASU did not have a material impact on the Company’s financial position, results of operations or cash flows. • ASU 2016-06, Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments. This new guidance clarifies that an exercise contingency does not need to be evaluated to determine whether it relates to interest rates and credit risk in an embedded derivative analysis of hybrid financial instruments. In other words, a contingent put or call option embedded in a debt instrument would be evaluated for possible separate accounting as a derivative instrument without regard to the nature of the exercise contingency. However, as required under existing guidance, companies will still need to evaluate other relevant embedded derivative guidance, such as whether the payoff from the contingent put or call option is adjusted based on changes in an index other than interest rates or credit risk, and whether the debt involves a substantial premium or discount. The adoption of this ASU did not have a material impact on the Company’s financial position, results of operations or cash flows. • ASU 2016-07, Investments-Equity Method and Joint Ventures (Topic 323) . The new guidance eliminates the requirement to apply the equity method of accounting retrospectively when a reporting entity obtains significant influence over a previously held investment. Instead, the equity method of accounting should be applied prospectively from the date significant influence is obtained. Investors should add the cost of acquiring the additional interest in the investee (if any) to the current basis of their previously held interest. The new standard also provides specific guidance for available-for-sale securities that become eligible for the equity method of accounting. In those cases, any unrealized gain or loss recorded within accumulated other comprehensive income should be recognized in earnings at the date the investment initially qualifies for the use of the equity method of accounting. The adoption of this ASU did not have a material impact on the Company’s financial position, results of operations or cash flows. • ASU 2016-17, Consolidation (Topic 810), Interest Held Through Related Parties That Are Under Common Control, which amends the guidance in U.S. GAAP on related parties that are under common control. Specifically, the new ASU requires that a single decision maker consider indirect interests held by related parties under common control on a proportionate basis in a manner consistent with its evaluation of indirect interests held through other related parties. The adoption of this ASU did not have a material impact on the Company’s financial position, results of operations or cash flows. Recently Issued Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) , superseding the revenue recognition requirements in ASC 605. This ASU requires an entity to recognize revenue for the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendment includes a five-step process to assist an entity in achieving the main principle(s) of revenue recognition under ASC 605. In August 2015, the FASB issued ASU 2015-14, which formalized the deferral of the effective date of the amendment for a period of one year from the original effective date. Following the issuance of ASU 2015-14, the amendment will be effective for the Company for the first annual period beginning after December 15, 2017. In March 2016, the FASB also issued ASU 2016-08, an amendment to the guidance in ASU 2014-09, which revises the structure of the indicators to provide indicators of when the entity is the principal or agent in a revenue transaction, and eliminated two of the indicators (“the entity’s consideration is in the form of a commission” and “the entity is not exposed to credit risk”) in making that determination. This amendment also clarifies that each indicator may be more or less relevant to the assessment depending on the terms and conditions of the contract. In April 2016, the FASB issued ASU 2016-10, which clarifies the implementation guidance on identifying promised goods or services and on determining whether an entity’s promise to grant a license with either a right to use the entity’s intellectual property (which is satisfied at a point in time) or a right to access the entity’s intellectual property (which is satisfied over time). In May 2016, the FASB issued ASU 2016-12, an amendment to ASU 2014-09, which provided practical expedients related to disclosures of remaining performance obligations, as well as other amendments to guidance on transition, collectability, non-cash consideration and the presentation of sales and other similar taxes. In December 2016, the FASB issued ASU 2016-20, a separate update for technical corrections and improvements to Topic 606 and other Topics amended by Update 2014-09 to increase stakeholders’ awareness of the proposals and to expedite improvements to Update 2014-09. The amendments, collectively, should be applied retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption. Because ASU 2014-09 does not apply to revenue associated with leases and financial instruments (including loans and securities), the Company does not expect the new guidance to have a material impact on the elements of its Consolidated Statements of Operations most closely associated with leases and financial instruments (such as interest income, interest expense and investment gain). The Company expects to adopt this ASU in the first quarter of 2018 with a cumulative-effect adjustment to opening retained earnings. The Company’s ongoing implementation efforts include the identification of other revenue streams that are within the scope of the new guidance and reviewing related contracts with customers. Upon adoption of this standard, the Company does not expect the impact to be material to its financial position, results of operation or cash flow and expects the impact to be disclosure only. In January 2016, the FASB issued ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . This amendment requires that equity investments, except those accounted for under the equity method of accounting or which result in consolidation of the investee, to be measured at fair value, with changes in the fair value being recorded in net income. However, equity investments that do not have readily determinable fair values will be measured at cost less impairment, if any, plus the effect of changes resulting from observable price transactions in orderly transactions or for the identical or similar investment of the same issuer. The amendment also simplifies the impairment assessment of equity instruments that do not have readily determinable fair values, eliminates the requirement to disclose methods and assumptions used to estimate fair value of instruments measured at their amortized cost on the balance sheet, requires that the disclosed fair values of financial instruments represent "exit price," requires entities to separately present in other comprehensive income the portion of the total change in fair value of a liability resulting from instrument-specific credit risk when the fair value option has been elected for that liability, requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or in the accompanying notes, and clarifies that an entity should evaluate the need for a valuation allowance on its deferred tax asset related to its available-for-sale securities in combination with its other deferred tax assets. This amendment will be effective for the Company for the first reporting period beginning after December 15, 2017, with earlier adoption permitted by public entities on a limited basis. Adoption of the amendment must be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption, except for amendments related to equity instruments that do not have readily determinable fair values, for which it should be applied prospectively. Upon adoption of this standard, the Company does not expect the impact to be material to its financial position, results of operations, cash flows or disclosures. In February 2016, the FASB issued ASU 2016-02, Leases, which will, among other impacts, change the criteria under which leases are identified and accounted for as on- or off-balance sheet. The guidance will be effective for the fiscal year beginning after December 15, 2018, including interim periods within that year. Once effective, the new guidance must be applied for all periods presented. The Company does not expect the new guidance to have a material impact on the Consolidated Statements of Income or the Consolidated Statements of Shareholders' Equity, since the Company recognizes assets and liabilities for all of its vehicle lease transactions. The Company will continue to evaluate the impact of the new guidance on its operating leases primarily for office space and computer equipment. Upon adoption, the Company will gross up its balance sheet by the present value of future minimum lease payments for these operating leases. In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses , which changes the criteria under which credit losses are measured. The amendment introduces a new credit reserving model known as the Current Expected Credit Loss (CECL) model, which replaces the incurred loss impairment methodology in current U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to establish credit loss estimates. The guidance will be effective for the fiscal year beginning after December 15, 2019, including interim periods within that year. The Company does not intend to adopt the new standard early and is currently evaluating the impact the new guidance will have on its financial position, results of operations and cash flows; however, it is expected that the new CECL model will alter the assumptions used in calculating the Company's credit losses, given the change to estimated losses for the estimated life of the financial asset, and will likely result in material changes to the Company’s credit and capital reserves. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments . This update amends the guidance in ASC 230 on the classification of certain cash receipts and payments in the SCF. The ASU’s amendments add or clarify guidance on eight cash flow issues including debt extinguishment costs, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, proceeds from the settlement of corporate-owned life insurance policies, distributions received from equity method investees, beneficial interests in securitization transactions, and separately identifiable cash flows and application of the predominance principle. The guidance will be effective for the fiscal year beginning after December 15, 2017, including interim periods within that year. Early adoption is permitted, including adoption in an interim period, however any adjustments should be reflected as of the beginning of the fiscal year that includes the period of adoption. All of the amended guidance must be adopted in the same period. Upon adoption of this standard, the Company does not expect the impact to be material to its financial position, results of operations or cash flows. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740), Intra-Entity Transfers of Assets Other Than Inventory , which will require an entity to recognize the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. This eliminates the current exception for all intra-entity transfers of an asset other than inventory that requires deferral of the tax effects until the asset is sold to a third party or otherwise recovered through use. The guidance will be effective for the Company for annual reporting periods beginning after December 15, 2017, including interim reporting periods. Early adoption is permitted at the beginning of an annual reporting period for which annual or interim financial statements have not been issued or made available for issuance. Upon adoption of this standard, the Company does not expect the impact to be material to its financial position, results of operation or cash flow. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (A consensus of the FASB Emerging Issues Task Force) , which requires that the statement of cash flows include restricted cash in the beginning and end-of-period total amounts shown on the statement of cash flows and that the statement of cash flows explain changes in restricted cash during the period. The guidance will be effective for the Company for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted, however, adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Company does not expect the adoption of this ASU to have an impact on its financial position, results of operations or cash flows and expects the impact to be disclosure only. In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business . The new guidance revises the definition of a business, potentially affecting areas of accounting such as acquisitions, disposals, goodwill impairment, and consolidation. Under the new guidance, when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the assets acquired (or disposed of) would not represent a business. If this initial screen is met, no further analysis would be required. To be considered a business, an acquisition would have to include an input and a substantive process that together significantly contribute to the ability to create an output. In addition, the amendments narrow the definition of the term “output” so that it is consistent with how outputs are defined in ASC Topic 606, Revenue from Contracts with Customers . This new guidance will be effective for the Company for the first reporting period beginning after December 15, 2017, with earlier adoption permitted. Adoption of the amendments must be applied on a prospective basis. The Company does not expect the adoption of this ASU to have an impact on its financial position, results of operations or cash flows. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill & Other (Topic 350): Simplifying the Accounting for Goodwill Impairment . It removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. The new rules state that a goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance will remain largely unchanged. Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. The same one-step impairment test will be applied to goodwill at all reporting units, even those with zero or negative carrying amounts. Entities will be required to disclose the amount of goodwill at reporting units with zero or negative carrying amounts. The revised guidance will be applied prospectively, and is effective January 1, 2020, with early adoption permitted for any impairment tests performed after January 1, 2017. The Company expects to early adopt this ASU in the fourth quarter of 2017 and does not expect the adoption of this ASU to have an impact on its financial position, results of operations or cash flows and expects the impact to be disclosure only. In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation (Topic 718), Scope of Modification Accounting which clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under the ASU, entities will apply modification accounting guidance if the value, vesting conditions or classification of award changes. The new guidance also clarifies that a modification to an award could be significant and therefore require disclosure, even if modification accounting is not required. The guidance will be applied prospectively to awards modified on or after the adoption date and is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including in an interim period. The Company does not expect the adoption of this ASU to have an impact on its financial position, results of operations or cash flows. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities . The new guidance amends the hedge accounting model to enable entities to better portray their risk management activities in the financial statements. The amendments expand an entity’s ability to hedge nonfinancial and financial risk components and reduce complexity in hedges of interest rate risk. The guidance eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in the fair value of a hedging instrument to be presented in the same income statement line in which the earnings effect of the hedged item is reported. The new guidance is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The Company is in the process of evaluating the impact of the adoption of this ASU.

Finance Receivables

Finance Receivables	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Finance Receivables	Finance Receivables Held For Investment Finance receivables held for investment, net is comprised of the following at September 30, 2017 and December 31, 2016 : September 30, December 31, 2016 Retail installment contracts acquired individually (a) $ 22,599,161 $ 23,219,724 Purchased receivables 30,396 158,264 Receivables from dealers 15,902 68,707 Personal loans 5,623 12,272 Capital lease receivables (Note 3) 16,121 22,034 Finance receivables held for investment, net $ 22,667,203 $ 23,481,001 (a) The Company has elected the fair value option for certain retail installment contracts reported in finance receivables held for investment, net. As at September 30, 2017 and December 31, 2016 , $24,799 and $24,495 of loans were recorded at fair value (Note 13). The Company's held for investment portfolio of retail installment contracts acquired individually, receivables from dealers, and personal loans is comprised of the following at September 30, 2017 and December 31, 2016 : September 30, 2017 Retail Installment Contracts Receivables from Personal Loans Non-TDR TDR Unpaid principal balance $ 20,044,330 $ 6,276,659 $ 16,069 $ 9,188 Credit loss allowance - specific — (1,782,114 ) — — Credit loss allowance - collective (1,589,151 ) — (167 ) (3,725 ) Discount (331,179 ) (84,588 ) — (16 ) Capitalized origination costs and fees 59,295 5,909 — 176 Net carrying balance $ 18,183,295 $ 4,415,866 $ 15,902 $ 5,623 December 31, 2016 Retail Installment Contracts Receivables from Personal Loans Non-TDR TDR Unpaid principal balance $ 21,528,406 $ 5,599,567 $ 69,431 $ 19,361 Credit loss allowance - specific — (1,611,295 ) — — Credit loss allowance - collective (1,799,760 ) — (724 ) — Discount (467,757 ) (91,359 ) — (7,721 ) Capitalized origination costs and fees 56,704 5,218 — 632 Net carrying balance $ 19,317,593 $ 3,902,131 $ 68,707 $ 12,272 Retail installment contracts Retail installment contracts are collateralized by vehicle titles, and the Company has the right to repossess the vehicle in the event the consumer defaults on the payment terms of the contract. Most of the Company’s retail installment contracts held for investment are pledged against warehouse lines or securitization bonds (Note 5). Most of the borrowers on the Company’s retail installment contracts held for investment are retail consumers; however, $634,677 and $848,918 of the unpaid principal balance represented fleet contracts with commercial borrowers as of September 30, 2017 and December 31, 2016 , respectively. During the nine months ended September 30, 2017 and 2016 , the Company originated $5,168,089 and $6,507,597 , respectively, in Chrysler Capital loans which represented 46% and 51% , respectively, of the total retail installment contract originations. Additionally, during the nine months ended September 30, 2017 and 2016 , the Company originated $4,693,392 and $4,612,284 , respectively, in Chrysler Capital leases. As of September 30, 2017 and December 31, 2016 , the Company's auto retail installment contract portfolio consisted of $6,936,988 and $7,365,444 , respectively, of Chrysler loans which represents 31% and 32% , respectively, of the Company's auto retail installment contract portfolio. Retail installment contracts and vehicle leases entered into with FCA customers, as part of the Chrysler Agreement, represent a significant concentration of those portfolios and there is a risk that the Chrysler Agreement could be terminated prior to its expiration date. Termination of the Chrysler Agreement could result in a decrease in the amount of new retail installment contracts and vehicle leases entered into with FCA customers. As of September 30, 2017 , borrowers on the Company’s retail installment contracts held for investment are located in Texas ( 16% ), Florida ( 12% ), California ( 9% ), Georgia ( 6% ) and other states each individually representing less than 5% of the Company’s total portfolio. Purchased receivables Purchased receivables portfolios, which were acquired with deteriorated credit quality, is comprised of the following at September 30, 2017 and December 31, 2016 : September 30, December 31, 2016 Outstanding balance $ 49,089 $ 231,360 Outstanding recorded investment, net of impairment 30,646 159,451 Changes in accretable yield on the Company’s purchased receivables portfolios for the periods indicated were as follows: For the Three Months Ended For the Nine Months Ended 2017 2016 2017 2016 Balance — beginning of period $ 87,994 $ 137,747 $ 107,041 $ 178,582 Accretion of accretable yield (5,223 ) (17,830 ) (26,670 ) (58,774 ) Disposals/transfers (62,183 ) — (62,183 ) — Reclassifications from (to) nonaccretable difference (a) 1,648 (8,627 ) 4,048 (8,518 ) Balance — end of period $ 22,236 $ 111,290 $ 22,236 $ 111,290 (a) Reclassifications from (to) nonaccretable difference represents the increases (decreases) in accretable yield resulting from higher (lower) estimated undiscounted cash flows. During the three months ended September 30, 2017 , the Company sold receivables previously acquired with deteriorated credit quality to SBNA (Note 11). Carrying value of the receivables at the date of sale was $99,301 . No such sales occurred during the three or nine months ended September 30, 2016. During the three and nine months ended September 30, 2017 and 2016 , the Company did not acquire any vehicle loan portfolios for which it was probable at acquisition that not all contractually required payments would be collected. However, during the three months ended September 30, 2016, the Company recognized certain retail installment contracts with an unpaid principal balance of $135,772 ( nil for the three months ended September 30, 2017 ) and for the nine months ended September 30, 2017 and 2016, the Company recognized certain retail installment contracts with an unpaid principal balance of $226,613 and $327,443 , respectively, held by non-consolidated securitization Trusts, under optional clean-up calls. Following the initial recognition of these loans at fair value, the performing loans in the portfolio are carried at amortized cost, net of allowance for credit losses. The Company elected the fair value option for all non-performing loans acquired (more than 60 days delinquent as of re-recognition date), for which it was probable that not all contractually required payments would be collected (Note 13). Receivable from Dealers The receivables from dealers held for investment are all Chrysler Agreement-related. As of September 30, 2017 , borrowers on these dealer receivables are located in Virginia ( 62% ), New York ( 28% ), Missouri ( 10% ) and Wisconsin ( 1% ). The Company previously held a term loan with a third-party vehicle dealer and lender that operates in multiple states. The loan allowed committed borrowings of $50,000 at December 31, 2016 . During the three months ended September 30, 2017 , the unpaid principal balance of the facility of $50,000 along with accrued interest was repaid. Personal Loans At September 30, 2016, the Company determined that its intent to sell certain personal revolving loans had changed and now expects to hold these loans through their maturity. The Company recorded a lower of cost or market adjustment through investment gains (losses), net, immediately prior to transferring the loans to finance receivables held for investment at their new recorded investment. The carrying value of these loans was $5,623 and $11,733 at September 30, 2017 and December 31, 2016 , respectively. Held For Sale The carrying value of the Company's finance receivables held for sale, net is comprised of the following at September 30, 2017 and December 31, 2016 : September 30, December 31, 2016 Retail installment contracts acquired individually $ 845,910 $ 1,045,815 Personal loans 929,549 1,077,600 Finance receivables held for sale, net $ 1,775,459 $ 2,123,415 Sales of retail installment contracts to third parties and proceeds from sales of charged-off assets for the three and nine months ended September 30, 2017 and 2016 were as follows: For the Three Months Ended For the Nine Months Ended 2017 2016 2017 2016 Sales of retail installment contracts to third parties — $ 793,804 260,568 $ 2,312,983 Proceeds from sales of charged-off assets 27,954 12,521 76,746 47,594 The Company retains servicing of retail installment contracts and leases sold to third parties. Total contracts sold to unrelated third parties and serviced as of September 30, 2017 and December 31, 2016 were as follows: September 30, December 31, 2016 Serviced balance of retail installment contracts and leases sold to third parties $ 6,674,980 $ 10,116,788

Leases

Leases	9 Months Ended
	Sep. 30, 2017
Leases [Abstract]
Leases	Leases The Company has both operating and capital leases, which are separately accounted for and recorded on the Company's condensed consolidated balance sheets. Operating leases are reported as leased vehicles, net, while capital leases are included in finance receivables held for investment, net. Operating Leases Leased vehicles, net, which is comprised of leases originated under the Chrysler Agreement, consisted of the following as of September 30, 2017 and December 31, 2016 : September 30, December 31, Leased vehicles $ 13,831,441 $ 11,939,295 Less: accumulated depreciation (2,830,041 ) (2,326,342 ) Depreciated net capitalized cost 11,001,400 9,612,953 Manufacturer subvention payments, net of accretion (1,098,331 ) (1,066,531 ) Origination fees and other costs 28,214 18,206 Net book value $ 9,931,283 $ 8,564,628 Periodically, the Company executes bulk sales of Chrysler Capital leases to a third party. The bulk sale agreements include certain provisions whereby the Company agrees to share in residual losses for lease terminations with losses over a specific percentage threshold (Note 10). The Company has retained servicing on the sold leases. During the three and nine months ended September 30, 2017 and 2016, the Company did not execute any bulk sales of leases originated under the Chrysler Capital program. The following summarizes the future minimum rental payments due to the Company as lessor under operating leases as of September 30, 2017 : Remainder of 2017 $ 474,217 2018 1,497,436 2019 859,498 2020 219,541 2021 4,282 Thereafter — Total $ 3,054,974 Capital Leases Certain leases originated by the Company are accounted for as capital leases, as the contractual residual values are nominal amounts. Capital lease receivables, net consisted of the following as of September 30, 2017 and December 31, 2016 : September 30, December 31, Gross investment in capital leases $ 25,725 $ 39,417 Origination fees and other 79 150 Less: unearned income (4,077 ) (7,545 ) Net investment in capital leases before allowance 21,727 32,022 Less: allowance for lease losses (5,606 ) (9,988 ) Net investment in capital leases $ 16,121 $ 22,034 The following summarizes the future minimum lease payments due to the Company as lessor under capital leases as of September 30, 2017 : Remainder of 2017 $ 2,864 2018 11,004 2019 5,907 2020 3,206 2021 1,994 Thereafter 750 Total $ 25,725

Credit Loss Allowance and Credi

Credit Loss Allowance and Credit Quality	9 Months Ended
	Sep. 30, 2017
Loans and Leases Receivable Disclosure [Abstract]
Credit Loss Allowance and Credit Quality	Credit Loss Allowance and Credit Quality Credit Loss Allowance The Company estimates the allowance for credit losses on individually acquired retail installment contracts and personal loans held for investment not classified as TDRs based on delinquency status, historical loss experience, estimated values of underlying collateral, when applicable, and various economic factors. In developing the allowance, the Company utilizes a loss emergence period assumption, a loss given default assumption applied to recorded investment, and a probability of default assumption based on a loss forecasting model. The loss emergence period assumption represents the average length of time between when a loss event is first estimated to have occurred and when the account is charged-off. The recorded investment represents unpaid principal balance adjusted for unaccreted net discounts, subvention from manufacturers, and origination costs. Under this approach, the resulting allowance represents the expected net losses of recorded investment inherent in the portfolio. For loans classified as TDRs, impairment is generally measured based on the present value of expected future cash flows discounted at the original effective interest rate. For loans that are considered collateral-dependent, such as certain bankruptcy modifications, impairment is measured based on the fair value of the collateral, less its estimated cost to sell. The amount of the allowance is equal to the difference between the loan’s impaired value and the recorded investment. The Company maintains a general credit loss allowance for receivables from dealers based on risk ratings and individually evaluates loans for specific impairment as necessary. As of September 30, 2017 and 2016, the credit loss allowance for receivables from dealers is comprised of a general allowance of $167 and $648 , respectively, as none of these receivables have been determined to be individually impaired. The activity in the credit loss allowance for individually acquired and dealer loans for the three and nine months ended September 30, 2017 and 2016 was as follows: Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Retail Installment Contracts Acquired Individually Receivables from Dealers Personal Loans Retail Installment Contracts Acquired Individually Receivables from Dealers Balance — beginning of period $ 3,446,968 $ 713 $ 4,362 $ 3,422,736 $ 837 Provision for credit losses 535,427 (546 ) 1,134 609,396 (189 ) Charge-offs (a) (1,206,059 ) — (1,976 ) (1,246,760 ) — Recoveries 594,929 — 205 615,913 — Balance — end of period $ 3,371,265 $ 167 $ 3,725 $ 3,401,285 $ 648 (a) For the three months ended September 30, 2017, charge-offs for retail installment contracts acquired individually includes approximately $18 million for the partial write-down of loans to the collateral value less estimated costs to sell, for which a bankruptcy notice was received. No such charge-offs were recorded for the three months ended September 30, 2016. Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 Retail Installment Contracts Acquired Individually Receivables from Dealers Personal Loans Retail Installment Contracts Acquired Individually Receivables from Dealers Balance — beginning of period $ 3,411,055 $ 724 $ — $ 3,197,414 $ 916 Provision for credit losses 1,682,894 (557 ) 10,275 1,787,277 (133 ) Charge-offs (a) (3,542,471 ) — (7,194 ) (3,429,905 ) (135 ) Recoveries 1,819,787 — 644 1,846,499 — Balance — end of period $ 3,371,265 $ 167 $ 3,725 $ 3,401,285 $ 648 (a) For the nine months ended September 30, 2017, charge-offs for retail installment contracts acquired individually includes approximately $66 million for the partial write-down of loans to the collateral value less estimated costs to sell, for which a bankruptcy notice was received. No such charge-offs were recorded for the nine months ended September 30, 2016. The impairment activity related to purchased receivables portfolios for the three and nine months ended September 30, 2017 and 2016 was as follows: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Balance — beginning of period $ 169,323 $ 168,518 $ 169,323 $ 172,308 Incremental provisions for purchased receivable portfolios — — — — Incremental reversal of provisions for purchased receivable portfolios — 804 — (2,986 ) Balance — end of period $ 169,323 $ 169,322 $ 169,323 $ 169,322 The Company estimates lease losses on the capital lease receivable portfolio based on delinquency status and loss experience to date, as well as various economic factors. The activity in the lease loss allowance for capital leases for the three and nine months ended September 30, 2017 and 2016 was as follows: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Balance — beginning of period $ 6,367 $ 12,752 $ 9,988 $ 19,878 Provision for lease losses 432 387 (597 ) (1,669 ) Charge-offs (2,655 ) (5,712 ) (9,415 ) (28,267 ) Recoveries 1,462 3,617 5,630 21,102 Balance — end of period $ 5,606 $ 11,044 $ 5,606 $ 11,044 Delinquencies Retail installment contracts are generally classified as non-performing when they are greater than 60 days past due as to contractual principal or interest payments. See discussion of TDR loans below. Dealer receivables are classified as non-performing when they are greater than 90 days past due. At the time a loan is placed in non-performing status, previously accrued and uncollected interest is reversed against interest income. If an account is returned to a performing status, the Company returns to accruing interest on the contract. The Company considers an account delinquent when an obligor fails to pay the required minimum portion of the scheduled payment by the due date. With respect to receivables originated by the Company prior to January 1, 2017 and through its “Chrysler Capital” channel, the required minimum payment is 90% of the scheduled payment. With respect to all other receivables originated by the Company or acquired by the Company from an unaffiliated third-party originator prior to January 1, 2017, the required minimum payment is 50% of the scheduled payment. With respect to receivables originated by the Company or acquired by the Company from an unaffiliated third-party originator on or after January 1, 2017, the required minimum payment is 90% of the scheduled payment, regardless of which channel the receivable was originated through. In each case, the period of delinquency is based on the number of days payments are contractually past due. As of September 30, 2017 and December 31, 2016 , a summary of delinquencies on retail installment contracts held for investment portfolio is as follows: September 30, 2017 Retail Installment Contracts Held for Investment Loans Acquired Individually Purchased Receivables Portfolios Total Principal, 30-59 days past due $ 2,574,165 $ 6,061 $ 2,580,226 Delinquent principal over 59 days (a) 1,460,793 3,750 1,464,543 Total delinquent principal $ 4,034,958 $ 9,811 $ 4,044,769 December 31, 2016 Retail Installment Contracts Held for Investment Loans Acquired Individually Purchased Receivables Portfolios Total Principal, 30-59 days past due $ 2,911,800 $ 13,703 $ 2,925,503 Delinquent principal over 59 days (a) 1,520,105 6,638 1,526,743 Total delinquent principal $ 4,431,905 $ 20,341 $ 4,452,246 (a) Interest is accrued until 60 days past due in accordance with the Company's accounting policy for retail installment contracts. The Company's delinquency ratio continues to be calculated using the end of period delinquent principal over 60 days. The balances in the above tables reflect total unpaid principal balance rather than net recorded investment before allowance. As of September 30, 2017 and December 31, 2016 , there were no receivables from dealers that were 30 days or more delinquent. As of September 30, 2017 and December 31, 2016 , there were $34,109 and $33,886 , respectively, of retail installment contracts held for sale that were 30 days or more delinquent. Credit Quality Indicators FICO ® Distribution — A summary of the credit risk profile of the Company’s retail installment contracts held for investment by FICO ® distribution, determined at origination, as of September 30, 2017 and December 31, 2016 was as follows: FICO ® Band September 30, 2017 December 31, 2016 Commercial (a) 2.4% 3.1% No-FICOs 11.6% 12.2% <540 22.4% 22.1% 540-599 32.4% 31.4% 600-639 17.5% 17.4% >640 13.7% 13.8% (a) FICO scores are not obtained on loans to commercial borrowers. Commercial Lending — The Company's risk department performs a commercial analysis and classifies certain loans over an internal threshold based on the commercial lending classifications described in Note 4 of the 2016 Annual Report on Form 10-K. Fleet loan credit quality indicators for retail installment contracts held for investment with commercial borrowers as of September 30, 2017 and December 31, 2016 were as follows: September 30, December 31, Pass $ 13,482 $ 17,585 Special Mention 5,688 2,790 Substandard 808 1,488 Doubtful — — Loss — — Total $ 19,978 $ 21,863 Commercial loan credit quality indicators for receivables from dealers held for investment as of September 30, 2017 and December 31, 2016 were as follows: September 30, December 31, Pass $ 14,340 $ 67,681 Special Mention 117 — Substandard 1,613 1,750 Doubtful — — Loss — — Unpaid principal balance $ 16,069 $ 69,431 Troubled Debt Restructurings In certain circumstances, the Company modifies the terms of its finance receivables to troubled borrowers. A modification of finance receivable terms is considered a TDR if the Company grants a concession to a borrower for economic or legal reasons related to the debtor’s financial difficulties that would not otherwise have been considered. Management considers TDRs to include all individually acquired retail installment contracts that have been modified at least once, deferred for a period of 90 days or more, or deferred at least twice. Additionally, restructurings through bankruptcy proceedings are deemed to be TDRs. The purchased receivables portfolio, operating and capital leases, and loans held for sale, including personal loans, are excluded from the scope of the applicable guidance. The Company's TDR balance as of September 30, 2017 and December 31, 2016 primarily consisted of loans that had been deferred or modified to receive a temporary reduction in monthly payment. As of September 30, 2017 and December 31, 2016 , there were no receivables from dealers classified as a TDR. For loans not classified as TDRs, the Company generally estimates an appropriate allowance for credit losses based on delinquency status, the Company’s historical loss experience, estimated values of underlying collateral, and various economic factors. Once a loan has been classified as a TDR, it is generally assessed for impairment based on the present value of expected future cash flows discounted at the loan's original effective interest rate considering all available evidence. For loans that are considered collateral-dependent, such as certain bankruptcy modifications, impairment is measured based on the fair value of the collateral, less its estimated cost to sell. The table below presents the Company’s TDRs as of September 30, 2017 and December 31, 2016 : September 30, December 31, 2016 Retail Installment Contracts Outstanding recorded investment (a) $ 6,330,331 $ 5,637,792 Impairment (1,782,114 ) (1,611,295 ) Outstanding recorded investment, net of impairment $ 4,548,217 $ 4,026,497 (a) As of September 30, 2017 , the outstanding recorded investment excludes $50.7 million of collateral-dependent bankruptcy TDRs that has been written down by $23.7 million to fair value less cost to sell. A summary of the Company’s delinquent TDRs at September 30, 2017 and December 31, 2016 , is as follows: September 30, December 31, 2016 Retail Installment Contracts Principal, 30-59 days past due $ 1,184,804 $ 1,253,848 Delinquent principal over 59 days 753,606 736,691 Total delinquent TDR principal $ 1,938,410 $ 1,990,539 (a) The balances in the above table reflects total unpaid principal balance rather than net recorded investment before allowance. A loan that has been classified as a TDR remains so until the loan is liquidated through payoff or charge-off. TDRs are placed on nonaccrual status when the Company believes repayment under the revised terms is not reasonably assured and, at the latest, when the account becomes past due more than 60 days, and considered for return to accrual when a sustained period of repayment performance has been achieved. As of September 30, 2017, the Company had $482,593 of TDR loans which were less than 60 days past due, but for which repayment was not reasonably assured, and were therefore in nonaccrual status. Average recorded investment and income recognized on TDR loans are as follows: Three Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Average outstanding recorded investment in TDRs $ 6,143,345 $ 5,213,132 Interest income recognized $ 225,871 $ 207,115 Nine Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Average outstanding recorded investment in TDRs $ 5,929,146 $ 4,940,280 Interest income recognized $ 711,033 $ 576,682 The following table summarizes the financial effects of TDRs that occurred during the three and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Outstanding recorded investment before TDR $ 1,123,080 $ 929,871 Outstanding recorded investment after TDR $ 1,122,450 $ 932,472 Number of contracts (not in thousands) 66,001 52,780 Nine Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Outstanding recorded investment before TDR $ 2,778,407 $ 2,463,409 Outstanding recorded investment after TDR $ 2,776,006 $ 2,478,035 Number of contracts (not in thousands) 160,098 139,524 Loan restructurings accounted for as TDRs within the previous twelve months that subsequently defaulted during the three and nine months ended September 30, 2017 and 2016 are summarized in the following table: Three Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Recorded investment in TDRs that subsequently defaulted (a) $ 197,953 $ 206,247 Number of contracts (not in thousands) 11,219 11,745 Nine Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Recorded investment in TDRs that subsequently defaulted (a) $ 600,117 $ 565,724 Number of contracts (not in thousands) 33,735 32,256 (a) For TDR modifications and TDR modifications that subsequently defaults, the allowance methodology remains unchanged.

Debt

Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Debt	Debt Revolving Credit Facilities The following table presents information regarding credit facilities as of September 30, 2017 and December 31, 2016 : September 30, 2017 Maturity Date(s) Utilized Balance Committed Amount Effective Rate Assets Pledged Restricted Cash Pledged Facilities with third parties: Warehouse line January 2018 $ 181,083 $ 500,000 2.96% $ 276,519 $ — Warehouse line Various (a) 258,545 1,250,000 1.21% 387,668 11,554 Warehouse line (b) August 2018 — 780,000 1.39% 2,329 121 Warehouse line (c) August 2018 2,766,543 3,120,000 2.22% 3,724,088 61,367 Warehouse line October 2018 445,277 1,800,000 3.45% 661,090 12,644 Repurchase facility (d) December 2017 254,120 254,120 3.35% — 13,708 Repurchase facility (d) April 2018 202,311 202,311 2.62% — — Repurchase facility (d) March 2018 148,690 148,690 3.88% — — Repurchase facility (d) November 2017 53,335 53,335 2.43% — — Warehouse line November 2018 274,499 1,000,000 3.44% 401,219 7,920 Warehouse line October 2018 87,965 400,000 3.72% 132,197 2,852 Warehouse line November 2018 57,820 500,000 4.54% 63,712 2,215 Warehouse line (e) October 2017 235,700 300,000 2.67% 276,521 9,278 Total facilities with third parties 4,965,888 10,308,456 5,925,343 121,659 Facilities with Santander and related subsidiaries (f,g): Line of credit December 2017 — 1,000,000 3.04% — — Line of credit December 2018 — 1,000,000 3.09% — — Promissory Note March 2019 300,000 300,000 2.45% — — Promissory Note May 2020 500,000 500,000 3.49% — — Promissory Note (h) March 2022 650,000 650,000 4.20% — — Promissory Note August 2021 650,000 650,000 3.44% — — Line of credit December 2018 265,400 750,000 3.77% — — Line of credit March 2019 — 3,000,000 3.94% — — Total facilities with Santander and related subsidiaries 2,365,400 7,850,000 — — Total revolving credit facilities $ 7,331,288 $ 18,158,456 $ 5,925,343 $ 121,659 (a) Half of the outstanding balance on this facility matures in March 2018 and half matures in March 2019. (b) This line is held exclusively for financing of Chrysler Capital loans. (c) This line is held exclusively for financing of Chrysler Capital leases. (d) These repurchase facilities are collateralized by securitization notes payable retained by the Company. These facilities have rolling maturities of up to one year . (e) In October 2017, the warehouse line that matured was extended to December 2017. (f) The lines of credit generally are also collateralized by securitization notes payable and residuals retained by the Company. As of September 30, 2017 and December 31, 2016 , zero and $1,316,568 , respectively, of the aggregate outstanding balances on these facilities were unsecured. (g) In October 2017, the Company executed a $400 million promissory note with SHUSA. The promissory note matures October 10, 2020. (h) The Company entered into an interest rate swap to hedge the interest rate risk on this fixed rate debt. During the three months ended September 30, 2017, the Company terminated the fair value hedge. At the time of termination, the fair value hedge adjustment was $4.5 million , the amortization of which will reduce interest expense over the remaining life of the fixed rate debt. December 31, 2016 Maturity Date(s) Utilized Balance Committed Amount Effective Rate Assets Pledged Restricted Cash Pledged Facilities with third parties: Warehouse line January 2018 $ 153,784 $ 500,000 3.17% $ 213,578 $ — Warehouse line Various 462,085 1,250,000 2.52% 653,014 14,916 Warehouse line August 2018 534,220 780,000 1.98% 608,025 24,520 Warehouse line August 2018 3,119,943 3,120,000 1.91% 4,700,774 70,991 Warehouse line October 2018 702,377 1,800,000 2.51% 994,684 23,378 Repurchase facility December 2017 507,800 507,800 2.83% — 22,613 Repurchase facility April 2017 235,509 235,509 2.04% — — Warehouse line November 2018 578,999 1,000,000 1.56% 850,758 17,642 Warehouse line October 2018 202,000 400,000 2.22% 290,867 5,435 Warehouse line November 2018 — 500,000 2.07% — — Warehouse line October 2017 243,100 300,000 2.38% 295,045 9,235 Total facilities with third parties 6,739,817 10,393,309 8,606,745 188,730 Facilities with Santander and related subsidiaries: Line of credit December 2017 500,000 500,000 3.04% — — Line of credit December 2018 175,000 500,000 3.87% — — Line of credit December 2017 1,000,000 1,000,000 2.86% — — Line of credit December 2018 1,000,000 1,000,000 2.88% — — Line of credit March 2017 300,000 300,000 2.25% — — Line of credit March 2019 — 3,000,000 3.74% — — Total facilities with Santander and related subsidiaries 2,975,000 6,300,000 — — Total revolving credit facilities $ 9,714,817 $ 16,693,309 $ 8,606,745 $ 188,730 Facilities with Third Parties The warehouse lines and repurchase facilities are fully collateralized by a designated portion of the Company’s retail installment contracts (Note 2), leased vehicles (Note 3), securitization notes payables and residuals retained by the Company.` Facilities with Santander and Related Subsidiaries Lines of Credit Through SHUSA, Santander provides the Company with $3,000,000 of committed revolving credit that can be drawn on an unsecured basis. Through its New York branch, Santander provides the Company with $2,750,000 of long-term committed revolving credit facilities. The facilities offered through the New York branch are structured as three - and five -year floating rate facilities, with current maturity dates of December 31, 2017 and December 31, 2018 , respectively. These facilities currently permit unsecured borrowing but generally are collateralized by retail installment contracts and retained residuals. Any secured balances outstanding under the facilities at the time of their maturity will amortize to match the maturities and expected cash flows of the corresponding collateral. Promissory Notes Through SHUSA, Santander provides the Company with $2,100,000 of promissory notes. Santander Consumer ABS Funding 2, LLC (a subsidiary) established a committed facility of $300 million with SHUSA on March 6, 2014. This facility matured on March 6, 2017 and was replaced on the same day with a $300 million term promissory note executed by SC Illinois as the borrower and SHUSA as the lender. Interest accrues on this note at a rate equal to three-month LIBOR plus 1.35% . The note has a maturity date of March 6, 2019. In addition, SC Illinois as borrower executed the following promissory notes with SHUSA; • a $500 million term promissory note on May 11, 2017. Interest accrues on this note at the rate of 3.49% . The note has a maturity date of May 11, 2020. • a $650 million term promissory note on March 31, 2017. Interest accrues on this note at the rate of 4.20% . The note has a maturity date of March 31, 2022. • a $650 million term promissory note on August 3, 2017. Interest accrues on this note at the rate of 3.44% . The note has a maturity date of August 3, 2021. Secured Structured Financings The following table presents information regarding secured structured financings as of September 30, 2017 and December 31, 2016 : September 30, 2017 Original Estimated Maturity Date(s) Balance Initial Note Amounts Issued Initial Weighted Average Interest Rate Collateral (b) Restricted Cash 2013 Securitizations April 2019 - March 2021 $ 612,494 $ 5,439,700 0.90% - 1.59% $ 797,901 $ 166,215 2014 Securitizations February 2020 - April 2022 1,340,311 6,391,020 1.16% - 1.72% 1,584,279 220,843 2015 Securitizations April 2020- January 2023 2,821,425 9,185,032 1.33% - 2.29% 3,964,228 387,272 2016 Securitizations April 2022 - March 2024 4,087,267 7,462,790 1.63% - 2.80% 5,425,003 366,363 2017 Securitizations April 2023 - Sept 2024 6,066,240 7,391,890 1.35% - 2.52% 7,853,934 346,534 Public securitizations (a) 14,927,737 35,870,432 19,625,345 1,487,227 2011 Private issuances December 2018 360,029 1,700,000 1.46% 475,937 23,648 2013 Private issuances September 2018 2,379,762 2,044,054 1.28% - 1.38% 3,716,406 153,499 2014 Private issuances March 2018 -November 2021 159,957 1,530,125 1.05% - 1.40% 274,552 11,055 2015 Private issuances December 2016 - July 2019 2,223,017 2,305,062 0.88% - 2.81% 1,137,412 52,172 2016 Private issuances May 2020 - September 2024 1,720,933 3,050,000 1.55% - 2.86% 2,441,657 89,456 2017 Private issuances April 2021 - September 2021 1,486,928 1,600,000 1.85% - 2.44% 1,877,131 41,287 Privately issued amortizing notes 8,330,626 12,229,241 9,923,095 371,117 Total secured structured financings $ 23,258,363 $ 48,099,673 $ 29,548,440 $ 1,858,344 (a) Secured structured financings executed under Rule 144A of the Securities Act are included within this balance. (b) Secured structured financings may be collateralized by the Company's collateral overages of other issuances. December 31, 2016 Original Estimated Maturity Date(s) Balance Initial Note Amounts Issued Initial Weighted Average Interest Rate Collateral Restricted Cash 2012 Securitizations September 2018 $ 197,470 $ 2,525,540 0.92%-1.23% $ 312,710 $ 73,733 2013 Securitizations January 2019 - January 2021 1,172,904 6,689,700 0.89%-1.59% 1,484,014 222,187 2014 Securitizations February 2020 - January 2021 1,858,600 6,391,020 1.16%-1.72% 2,360,939 250,806 2015 Securitizations September 2019 - January 2023 4,326,292 9,317,032 1.33%-2.29% 5,743,884 468,787 2016 Securitizations April 2022 - March 2024 5,881,216 7,462,790 1.63%-2.46% 7,572,977 408,086 Securitizations 13,436,482 32,386,082 17,474,524 1,423,599 2010 Private issuances June 2011 113,157 516,000 1.29% 213,235 6,270 2011 Private issuances December 2018 342,369 1,700,000 1.46% 617,945 31,425 2013 Private issuances September 2018-September 2020 2,375,964 2,693,754 1.13%-1.38% 4,122,963 164,740 2014 Private issuances March 2018 - December 2021 643,428 3,271,175 1.05%-1.40% 1,129,506 68,072 2015 Private issuances December 2016 - July 2019 2,185,166 2,855,062 0.88%-2.81% 2,384,661 140,269 2016 Securitizations May 2020 - September 2024 2,512,323 3,050,000 1.55%-2.86% 3,553,577 90,092 Privately issued amortizing notes 8,172,407 14,085,991 12,021,887 500,868 Total secured structured financings $ 21,608,889 $ 46,472,073 $ 29,496,411 $ 1,924,467 Most of the Company’s secured structured financings are in the form of public, SEC-registered securitizations. The Company also executes private securitizations under Rule 144A of the Securities Act and periodically issues private term amortizing notes, which are structured similarly to securitizations but are acquired by banks and conduits. The Company’s securitizations and private issuances are collateralized by vehicle retail installment contracts and loans or leases. As of September 30, 2017 and December 31, 2016 , the Company had private issuances of notes backed by vehicle leases totaling $5,507,315 and $3,862,274 , respectively. Unamortized debt issuance costs are amortized as interest expense over the terms of the related notes payable using the effective interest method and are classified as a discount to the related recorded debt balance. Amortized debt issuance costs were $9,489 and $7,021 for the three months ended September 30, 2017 and 2016 , respectively, and $26,595 and $20,224 for the nine months ended September 30, 2017 and 2016 , respectively. For securitizations, the term takes into consideration the expected execution of the contractual call option, if applicable. Amortization of premium or accretion of discount on acquired notes payable is also included in interest expense using the effective interest method over the estimated remaining life of the acquired notes. Total interest expense on secured structured financings for the three months ended September 30, 2017 and 2016 was $152,950 and $108,720 , respectively and for the nine months ended September 30, 2017 and 2016 was $409,968 and $305,677 , respectively.

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2017
Variable Interest Entity Disclosure [Abstract]
Variable Interest Entities	Variable Interest Entities The Company transfers retail installment contracts and leased vehicles into newly formed Trusts that then issue one or more classes of notes payable backed by the collateral. The Company’s continuing involvement with these Trusts is in the form of servicing the assets and, generally, through holding residual interests in the Trusts. The Trusts are considered VIEs under U.S. GAAP and the Company may or may not consolidate these VIEs on the condensed consolidated balance sheets. For further description of the Company’s securitization activities, involvement with VIEs and accounting policies regarding consolidation of VIEs, see Note 7 of the 2016 Annual Report on Form 10-K. On-balance sheet variable interest entities The Company retains servicing 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 fees, commissions and other income. As of September 30, 2017 and December 31, 2016 , the Company was servicing $26,315,659 and $27,802,971 , respectively, of gross retail installment contracts that have been transferred to consolidated Trusts. The remainder of the Company’s retail installment contracts remain unpledged. A summary of the cash flows received from consolidated securitization trusts during the three and nine months ended September 30, 2017 and 2016 , is as follows: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Assets securitized $ 2,998,430 $ 2,043,114 $ 15,395,158 $ 12,026,706 Net proceeds from new securitizations (a) $ 2,936,719 $ 1,688,822 $ 11,998,611 $ 9,509,135 Net proceeds from sale of retained bonds — — 273,733 128,798 Cash received for servicing fees (b) 228,131 200,634 653,048 595,070 Net distributions from Trusts (b) 666,179 776,306 2,073,965 2,167,512 Total cash received from Trusts $ 3,831,029 $ 2,665,762 $ 14,999,357 $ 12,400,515 (a) Includes additional advances on existing securitizations. (b) These amounts are not reflected in the accompanying condensed consolidated statements of cash flows because these cash flows are intra-company and eliminated in consolidation. Off-balance sheet variable interest entities During the three and nine months ended September 30, 2017 , the Company sold $1,347,010 and $2,583,341 of gross retail installment contracts to VIEs in off-balance sheet securitizations for a loss of $6,846 and $13,026 , respectively, which is recorded in investment losses, net in the accompanying condensed consolidated statements of income. The transactions were executed under securitization platforms with Santander. S antander, as a majority owned affiliate, will hold eligible vertical interest in Notes and Certificates of not less than 5% to comply with the Dodd-Frank Act risk retention rules. For the three and nine months ended September 30, 2016, the Company executed no off-balance sheet securitizations with VIEs with which it has continuing involvement. As of September 30, 2017 and December 31, 2016 , the Company was servicing $3,955,935 and $2,741,101 , respectively, of gross retail installment contracts that have been sold in off-balance sheet securitizations and were subject to an optional clean-up call. The portfolio was comprised as follows: September 30, 2017 December 31, 2016 SPAIN $ 2,265,206 $ — Total serviced for related parties 2,265,206 — Chrysler Capital securitizations 1,690,729 2,472,756 Other third parties — 268,345 Total serviced for third parties 1,690,729 2,741,101 Total serviced for others portfolio $ 3,955,935 $ 2,741,101 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 off-balance sheet securitization trusts during the three and nine months ended September 30, 2017 and 2016 is as follows: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Receivables securitized (a) $ 1,347,010 $ — $ 2,583,341 $ — Net proceeds from new securitizations $ 1,347,430 $ — $ 2,588,227 $ — Cash received for servicing fees 12,309 10,027 25,677 38,885 Total cash received from securitization trusts $ 1,359,739 $ 10,027 $ 2,613,904 $ 38,885 (a) Represents the unpaid principal balance at the time of original securitization.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments The Company uses derivatives financial instruments such as interest rate swaps, interest rate caps and the corresponding options written in order to offset the interest rate caps to manage the Company's exposure to changing interest rates. The Company uses both derivatives that qualify for hedge accounting treatment and economic hedges. In addition, the Company is the holder of a warrant that gives it the right, if certain vesting conditions are satisfied, to purchase additional shares in a company in which it has a cost method investment. This warrant was issued in 2012 and is carried at its estimated fair value of zero at September 30, 2017 and December 31, 2016 . The underlying notional amounts and aggregate fair values of these derivatives financial instruments at September 30, 2017 and December 31, 2016 , are as follows: September 30, 2017 Notional Fair Value Asset Liability Interest rate swap agreements designated as cash flow hedges $ 4,978,500 $ 39,986 $ 39,986 $ — Interest rate swap agreements not designated as hedges 1,493,800 8,801 8,801 — Interest rate cap agreements 11,900,578 90,313 116,568 (26,255 ) Options for interest rate cap agreements 11,900,578 (90,259 ) 26,304 (116,563 ) December 31, 2016 Notional Fair Value Asset Liability Interest rate swap agreements designated as cash flow hedges $ 7,854,700 $ 44,618 $ 45,551 $ (933 ) Interest rate swap agreements not designated as hedges 1,019,900 1,939 2,076 (137 ) Interest rate cap agreements 9,463,935 76,269 76,269 — Options for interest rate cap agreements 9,463,935 (76,281 ) — (76,281 ) Total return settlement 658,471 (30,618 ) — (30,618 ) During the three months ended June 30, 2017, the Company entered into an interest rate swap to hedge the interest rate risk on a certain fixed rate debt. This derivative was designated as a fair value hedge at inception and was accounted for by recording the change in the fair value of the derivative instrument and the related hedged item attributable to interest rate risk on the Condensed Consolidated Balance Sheets, with the corresponding income or expense recorded in the Condensed Consolidated Statements of Operations. During the three months ended September 30, 2017, the Company terminated the interest rate swap. The Company purchased price holdback payments and total return settlement payments that were considered to be derivatives, collectively referred to herein as “total return settlement,” and accordingly were marked to fair value each reporting period. The Company was obligated to make purchase price holdback payments on a periodic basis to a third-party originator of loans that the Company has purchased, when losses are lower than originally expected. The Company also was obligated to make total return settlement payments to this third-party originator in 2016 and 2017 if returns on the purchased loans are greater than originally expected. All purchase price holdback payments and all total return settlement payments due in 2016 and 2017 have been made and as of September 30, 2017, the derivative instrument has been settled. See Note 13 for disclosure of fair value and balance sheet location of the Company's derivative financial instruments. The Company enters into legally enforceable master netting agreements that reduce risk by permitting netting of transactions, such as derivatives and collateral posting, with the same counterparty on the occurrence of certain events. A master netting agreement allows two counterparties the ability to net-settle amounts under all contracts, including any related collateral posted, through a single payment. The right to offset and certain terms regarding the collateral process, such as valuation, credit events and settlement, are contained in ISDA master agreements. The Company has elected to present derivative balances on a gross basis even if the derivative is subject to a legally enforceable master netting (ISDA) agreement. Collateral that is received or pledged for these transactions is disclosed within the “Gross amounts not offset in the Condensed Consolidated Balance Sheet” section of the tables below. Information on the offsetting of derivative assets and derivative liabilities due to the right of offset was as follows, as of September 30, 2017 and December 31, 2016 : Gross Amounts Not Offset in the Assets Presented Cash Net September 30, 2017 Interest rate swaps - Santander and affiliates $ 6,042 $ (336 ) $ 5,706 Interest rate swaps - third party 42,745 (27,146 ) 15,599 Interest rate caps - Santander and affiliates 5,053 (5,053 ) — Interest rate caps - third party 111,515 (78,896 ) 32,619 Back to back - Santander & affiliates $ 9,775 — $ 9,775 Back to back - third party $ 16,529 — $ 16,529 Total derivatives subject to a master netting arrangement or similar arrangement 191,659 (111,431 ) 80,228 Total derivatives not subject to a master netting arrangement or similar arrangement — — — Total derivative assets $ 191,659 $ (111,431 ) $ 80,228 Total financial assets $ 191,659 $ (111,431 ) $ 80,228 December 31, 2016 Interest rate swaps - Santander and affiliates $ 5,372 $ — $ 5,372 Interest rate swaps - third party 42,254 (22,100 ) 20,154 Interest rate caps - Santander and affiliates 7,593 — 7,593 Interest rate caps - third party 68,676 — 68,676 Total derivatives subject to a master netting arrangement or similar arrangement 123,895 (22,100 ) 101,795 Total derivatives not subject to a master netting arrangement or similar arrangement — — — Total derivative assets $ 123,895 $ (22,100 ) $ 101,795 Total financial assets $ 123,895 $ (22,100 ) $ 101,795 (a) Cash collateral received is reported in Other liabilities or Due to affiliate, as applicable, in the condensed consolidated balance sheet. Gross Amounts Not Offset in the Liabilities Presented Cash Net September 30, 2017 Interest rate swaps - Santander & affiliates $ — $ — $ — Interest rate swaps - third party — — — Interest rate caps - Santander and affiliates 9,775 — 9,775 Interest rate caps - third party 16,480 $ (372 ) 16,108 Back to back - Santander & affiliates 5,053 (5,053 ) — Back to back - third party 111,510 (46,650 ) 64,860 Total derivatives subject to a master netting arrangement or similar arrangement 142,818 (52,075 ) 90,743 Total derivatives not subject to a master netting arrangement or similar arrangement — — — Total derivative liabilities $ 142,818 $ (52,075 ) $ 90,743 Total financial liabilities $ 142,818 $ (52,075 ) $ 90,743 December 31, 2016 Interest rate swaps - Santander & affiliates $ 546 $ (546 ) $ — Interest rate swaps - third party 524 (524 ) — Back to back - Santander & affiliates 7,593 (7,593 ) — Back to back - third party 68,688 (68,688 ) — Total derivatives subject to a master netting arrangement or similar arrangement 77,351 (77,351 ) — Total return settlement 30,618 — 30,618 Total derivatives not subject to a master netting arrangement or similar arrangement 30,618 — 30,618 Total derivative liabilities $ 107,969 $ (77,351 ) $ 30,618 Total financial liabilities $ 107,969 $ (77,351 ) $ 30,618 (a) Cash collateral pledged is reported in Other assets or Due from affiliate, as applicable, in the condensed consolidated balance sheet. In certain instances, the Company is over-collateralized since the actual amount of cash pledged as collateral exceeds the associated financial liability. As a result, the actual amount of cash collateral pledged that is reported in Other assets or Due from affiliates may be greater than the amount shown in the table above. The gross gains (losses) reclassified from accumulated other comprehensive income (loss) to net income, and gains (losses) recognized in net income, are included as components of interest expense. The impacts on the condensed consolidated statements of income and comprehensive income for the three and nine months ended September 30, 2017 and 2016 were as follows: Three Months Ended September 30, 2017 Recognized in Earnings Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Interest rate swap agreements designated as cash flow hedges $ (2,061 ) $ (882 ) $ 1,461 Interest rate swap agreements designated as fair value hedges (1,232 ) — — Total $ (3,293 ) $ (882 ) $ 1,461 Derivative instruments not designated as hedges: Gains (losses) recognized in interest expense $ 90 Gains (losses) recognized in operating expenses $ (2,723 ) Three Months Ended September 30, 2016 Recognized in Earnings Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Interest rate swap agreements designated as cash flow hedges $ 293 $ 27,764 $ (10,799 ) Derivative instruments not designated as hedges: Gains (losses) recognized in interest expense $ (3,769 ) Gains (losses) recognized in operating expenses $ 343 Nine Months Ended September 30, 2017 Recognized in Earnings Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Interest rate swap agreements designated as cash flow hedges $ (11,573 ) $ 4,233 $ (3,158 ) Derivative instruments not designated as hedges: Gains (losses) recognized in interest expense $ 90 Gains (losses) recognized in operating expenses $ (2,297 ) Nine Months Ended September 30, 2016 Recognized in Earnings Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Interest rate swap agreements designated as cash flow hedges $ 528 $ (81,247 ) $ (35,442 ) Derivative instruments not designated as hedges: Gains (losses) recognized in interest expense $ 2,428 Gains (losses) recognized in operating expenses $ (2,337 ) The ineffectiveness related to the interest rate swap agreements designated as cash flow hedges was insignificant for the nine months ended September 30, 2017 and 2016 . The Company estimates that approximately $12,648 of unrealized gains included in accumulated other comprehensive income (loss) will be reclassified to interest expense within the next twelve months.

Other Assets

Other Assets	9 Months Ended
	Sep. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Other Assets Other assets were comprised as follows: September 30, December 31, Vehicles (a) $ 206,076 $ 257,382 Manufacturer subvention payments receivable (b) 102,383 161,447 Upfront fee (b) 83,750 95,000 Derivative assets at fair value (c) 170,789 110,930 Derivative - third party collateral 120,711 75,089 Prepaids 41,324 46,177 Accounts receivable 28,758 22,480 Other 32,469 16,905 Other assets $ 786,260 $ 785,410 (a) Includes vehicles obtained through repossession as well as vehicles obtained due to lease terminations. (b) These amounts relate to the Chrysler Agreement. The Company paid a $150,000 upfront fee upon the May 2013 inception of the agreement. The fee is being amortized into finance and other interest income over a ten -year term. As the preferred financing provider for FCA, the Company is entitled to subvention payments on loans and leases with below-market customer payments. (c) Derivative assets at fair value represent the gross amount of derivatives presented in the condensed consolidated financial statements. Refer to Note 7 to these Condensed Consolidated Financial Statements for the detail of these amounts.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company recorded income tax expense of $78,385 ( 28.2% effective tax rate) and $90,473 ( 29.8% effective tax rate) during the three months ended September 30, 2017 and 2016 , respectively, and $239,819 ( 28.3% effective tax rate) and $365,334 ( 34.1% effective tax rate) during the nine months ended September 30, 2017 and 2016 , respectively. The Company has historically provided deferred taxes under ASC 740-30-25, formerly APB 23, for the presumed repatriation to the United States earnings from the Company’s Puerto Rican subsidiary, SCI. In June 2017, the Company asserted that undistributed net earnings of SCI would be indefinitely reinvested outside the United States. This change in assertion was primarily driven by future United States cash projections and the Company’s intent to invest the earnings generated outside the United States. Under ASC 740-30 (formerly APB 23), unremitted earnings that are no longer permanently invested would become subject to deferred income taxes under United States law. The Company had $156.7 million of undistributed net earnings and a $52.8 million unrecorded deferred tax liability at September 30, 2017. The Company is a party to a tax sharing agreement requiring that the unitary state tax liability among affiliates included in unitary state tax returns be allocated using the hypothetical separate company tax calculation method. The Company had a net receivable from affiliates under the tax sharing agreement of $467 and $1,087 at September 30, 2017 and December 31, 2016 , respectively, which was included in related party taxes receivable in the condensed consolidated balance sheet. Significant judgment is required in evaluating and reserving for uncertain tax positions. Although management believes adequate reserves have been established for all uncertain tax positions, the final outcomes of these matters may differ. Management does not believe the outcome of any uncertain tax position, individually or combined, will have a material effect on the results of operations. The reserve for uncertain tax positions, as well as associated penalties and interest, is a component of the income tax provision.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The following table summarizes liabilities recorded for commitments and contingencies as of September 30, 2017 and December 31, 2016 , all of which are included in accounts payable and accrued expenses in the accompanying condensed consolidated balance sheets: Agreement or Legal Matter Commitment or Contingency September 30, 2017 December 31, 2016 Chrysler Agreement Revenue-sharing and gain-sharing payments $ 13,270 $ 10,134 Agreement with Bank of America Servicer performance fee 8,066 9,797 Agreement with CBP Loss-sharing payments 4,874 4,563 Other Contingencies Consumer arrangements 8,637 — Legal and regulatory proceedings Aggregate legal and regulatory liabilities 17,800 39,200 Following is a description of the agreements and legal matters pursuant to which the liabilities in the preceding table were recorded. Chrysler Agreement Under terms of the Chrysler Agreement, the Company must make revenue sharing payments to FCA and gain-sharing payments when residual gains on leased vehicles exceed a specified threshold. The Company had accrued $13,270 and $ 10,134 at September 30, 2017 and December 31, 2016 , respectively, related to these obligations. The Chrysler Agreement requires, among other things, that the Company bear the risk of loss on loans originated pursuant to the agreement, but also that FCA shares in any residual gains and losses from consumer leases. The agreement also requires that the Company maintain at least $5.0 billion in funding available for dealer inventory financing and $4.5 billion of financing dedicated to FCA retail financing. In turn, FCA must provide designated minimum threshold percentages of its subvention business to the Company. The Chrysler Agreement is subject to early termination in certain circumstances, including the failure by either party to comply with certain of their ongoing obligations under the Chrysler Agreement. These obligations include the Company's meeting specified escalating penetration rates for the first five years of the agreement. The Company has not met these penetration rates at September 30, 2017 . If the Chrysler Agreement were to terminate, there could be a materially adverse impact to the Company's financial condition and results of operations. Agreement with Bank of America Until January 31, 2017, the Company had a flow agreement with Bank of America whereby the Company was committed to sell up to $300,000 of eligible loans to the bank each month. On October 27, 2016, Bank of America notified the Company that it was terminating the flow agreement effective January 31, 2017, and accordingly, the flow agreement is terminated. The Company retains servicing on all sold loans and may receive or pay a servicer performance payment based on an agreed-upon formula if performance on the sold loans is better or worse, respectively, than expected performance at time of sale. Servicer performance payments are due six years from the cut-off date of each loan sale. The Company had accrued $8,066 and $9,797 at September 30, 2017 and December 31, 2016 , respectively, related to this obligation. Agreement with CBP Until May 1, 2017, the Company sold loans to CBP under terms of a flow agreement and predecessor sale agreements. Under the flow agreement, as amended, CBP's committed purchases of Chrysler Capital prime loans were a maximum of $200,000 and a minimum of $50,000 per quarter. The Company retained servicing on the sold loans and will owe CBP a loss-sharing payment capped at 0.5% of the original pool balance if losses exceed a specified threshold, established on a pool-by-pool basis. Loss-sharing payments are due the month in which net losses exceed the established threshold of each loan sale. The Company had accrued $4,874 and $4,563 at September 30, 2017 and December 31, 2016 , respectively, related to the loss-sharing obligation. Other Contingencies The Company is or may be subject to potential liability under various other contingent exposures. The Company had accrued $8,637 and zero at September 30, 2017 and December 31, 2016 , respectively, for other miscellaneous contingencies. Legal and regulatory proceedings Periodically, the Company is party to, or otherwise involved in, various lawsuits and other legal proceedings that arise in the ordinary course of business. In view of the inherent difficulty of predicting the outcome of any such lawsuit, regulatory matter and legal proceeding, particularly where the claimants seek very large or indeterminate damages or where the matters present novel legal theories or involve a large number of parties, the Company generally cannot predict the eventual outcome of the pending matters, the timing of the ultimate resolution of the matters, or the eventual loss, fines or penalties related to the matter. Accordingly, except as provided below, the Company is unable to reasonably estimate its potential exposure, if any, to these lawsuits, regulatory matters and other legal proceedings at this time. However, it is reasonably possible that actual outcomes or losses may differ materially from the Company's current assessments and estimates and any adverse resolution of any of these matters against it could have a material adverse effect on the Company's financial position, liquidity, and results of operation. In accordance with applicable accounting guidance, the Company establishes an accrued liability for litigation, regulatory matters and other legal proceedings when those matters present material loss contingencies that are both probable and estimable. In such cases, there may be an exposure to loss in excess of any amounts accrued. When a loss contingency is not both probable and estimable, the Company does not establish an accrued liability. As a litigation, regulatory matter or other legal proceeding develops, the Company, in conjunction with any outside counsel handling the matter, evaluates on an ongoing basis whether the matter presents a material loss contingency that is probable and estimable. If a determination is made during a given quarter that a material loss contingency is probable and estimable, an accrued liability is established during such quarter with respect to such loss contingency. The Company continues to monitor the matter for further developments that could affect the amount of the accrued liability previously established. As of September 30, 2017 , the Company has accrued aggregate legal and regulatory liabilities of $17,800 . Further, the Company believes that the estimate of the aggregate range of reasonably possible losses, in excess of reserves established, for legal and regulatory proceedings is up to $18,000 as of September 30, 2017. Set forth below are descriptions of the material lawsuits, regulatory matters and other legal proceedings to which the Company is subject. Securities Class Action and Shareholder Derivative Lawsuits • Deka Lawsuit On August 26, 2014, a purported securities class action lawsuit was filed in the United States District Court, Southern District of New York, captioned Steck v. Santander Consumer USA Holdings Inc. et al., No. 1:14-cv-06942 (the Deka Lawsuit). The Deka Lawsuit was brought against the Company, certain of its current and former directors and executive officers and certain institutions that served as underwriters in the Company's IPO on behalf of a class consisting of those who purchased or otherwise acquired our securities between January 23, 2014 and June 12, 2014. In June 2015, the venue of the Deka Lawsuit was transferred to the United States District Court, Northern District of Texas. In September 2015, the court granted a motion to appoint lead plaintiffs and lead counsel, and the Deka Lawsuit is now captioned Deka Investment GmbH et al. v. Santander Consumer USA Holdings Inc. et al., No. 3:15-cv-2129-K. The amended class action complaint in the Deka Lawsuit alleges that our Registration Statement and Prospectus and certain subsequent public disclosures contained misleading statements concerning the Company’s ability to pay dividends and the adequacy of the Company’s compliance systems and oversight. The amended complaint asserts claims under Sections 11, 12(a) and 15 of the Securities Act of 1933 and under Sections 10(b) and 20(a) of the Exchange Act, and Rule 10b-5 promulgated thereunder, and seeks damages and other relief. On December 18, 2015, the Company and the individual defendants moved to dismiss the amended class action complaint, and on June 13, 2016, the motion to dismiss was denied. On December 2, 2016, the plaintiffs moved to certify the proposed classes, on February 17, 2017, the Company filed an opposition to the plaintiffs' motion to certify the proposed classes, and on March 31, 2017, the plaintiffs filed their reply brief. On July 11, 2017, the court granted an order staying the Deka Lawsuit pending the resolution of the appeal of a class certification order in In re Cobalt Int’l Energy, Inc. Sec. Litig., No. H-14-3428, 2017 U.S. Dist. LEXIS 91938 (S.D. Tex. June 15, 2017). • Feldman Lawsuit On October 15, 2015, a shareholder derivative complaint was filed in the Court of Chancery of the State of Delaware, captioned Feldman v. Jason A. Kulas, et al., C.A. No. 11614 (the Feldman Lawsuit). The Feldman Lawsuit names as defendants current and former members of the Board, and names the Company as a nominal defendant. The complaint alleges, among other things, that the current and former director defendants breached their fiduciary duties in connection with overseeing the Company’s subprime auto lending practices, resulting in harm to the Company. The complaint seeks unspecified damages and equitable relief. On December 29, 2015, the Feldman Lawsuit was stayed pending the resolution of the Deka Lawsuit. • Parmelee Lawsuit On March 18, 2016, a purported securities class action lawsuit was filed in the United States District Court, Northern District of Texas, captioned Parmelee v. Santander Consumer USA Holdings Inc. et al., No. 3:16-cv-783 (the Parmelee Lawsuit). On April 4, 2016, another purported securities class action lawsuit was filed in the United States District Court, Northern District of Texas, captioned Benson v. Santander Consumer USA Holdings Inc. et al., No. 3:16-cv-919 (the Benson Lawsuit). Both the Parmelee Lawsuit and the Benson Lawsuit were filed against the Company and certain of its current and former directors and executive officers on behalf of a class consisting of all those who purchased or otherwise acquired our securities between February 3, 2015 and March 15, 2016. On May 25, 2016, the Benson Lawsuit was consolidated into the Parmelee Lawsuit, with the consolidated case captioned as Parmelee v. Santander Consumer USA Holdings Inc. et al., No. 3:16-cv-783. On December 20, 2016, the plaintiffs filed an amended class action complaint. The amended class action complaint in the Parmelee Lawsuit alleges that the Company made false or misleading statements, as well as failed to disclose material adverse facts, in prior Annual and Quarterly Reports filed under the Exchange Act and certain other public disclosures, in connection with, among other things, the Company’s change in its methodology for estimating its allowance for credit losses and correction of such allowance for prior periods in, among other public disclosures, the Company’s Annual Report on Form 10-K for the year ended December 31, 2015, the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2016, and the Company’s amended filings for prior reporting periods. The amended class action complaint asserts claims under Sections 10(b) and 20(a) of the Exchange Act, and Rule 10b-5 promulgated thereunder, and seeks damages and other relief. On March 14, 2017, the Company filed a motion to dismiss the Parmelee Lawsuit, on April 25, 2017, the plaintiffs filed an opposition to the motion to dismiss, and on June 9, 2017, the Company filed a reply to the plaintiffs’ opposition. • Jackie888 Lawsuit On September 27, 2016, a shareholder derivative complaint was filed in the Court of Chancery of the State of Delaware, captioned Jackie888, Inc. v. Jason Kulas, et al., C.A. # 12775 (the Jackie888 Lawsuit). The Jackie888 Lawsuit names as defendants current and former members of the Board, and names the Company as a nominal defendant. The complaint alleges, among other things, that the defendants breached their fiduciary duties in connection with the Company’s accounting practices and controls. The complaint seeks unspecified damages and equitable relief. On April 13, 2017, the Jackie888 Lawsuit was stayed pending the resolution of the Deka Lawsuit. Consumer Lending Cases The Company is also party to various lawsuits pending in federal and state courts alleging violations of state and federal consumer lending laws, including, without limitation, the Equal Credit Opportunity Act, the Fair Debt Collection Practices Act, Fair Credit Reporting Act, Section 5 of the Federal Trade Commission Act, the Telephone Consumer Protection Act, the Truth in Lending Act, wrongful repossession laws, usury laws and laws related to unfair and deceptive acts or practices. In general, these cases seek damages and equitable and/or other relief. Regulatory Proceedings The Company is party to, or is periodically otherwise involved in, reviews, investigations, examinations and proceedings (both formal and informal), and information-gathering requests, by government and self-regulatory agencies, including the FRBB, the CFPB, the DOJ, the SEC, the FTC and various state regulatory and enforcement agencies. • Civil Subpoenas Relating to Underwriting and Securitization of Nonprime Loans Currently, such proceedings include, but are not limited to, a civil subpoena from the DOJ, under FIRREA, requesting the production of documents and communications that, among other things, relate to the underwriting and securitization of nonprime auto loans since 2007, and from the SEC requesting the production of documents and communications that, among other things, relate to the underwriting and securitization of nonprime auto loans since 2013. • 2017 Written Agreement with the Federal Reserve On March 21, 2017, the Company and SHUSA entered into a written agreement (the “2017 Written Agreement”) with the FRBB. Under the terms of the 2017 Written Agreement, the Company is required to enhance its compliance risk management program, board oversight of risk management and senior management oversight of risk management, and SHUSA is required to enhance its oversight of SC’s management and operations. • Attorneys General Enforcement Actions In October 2014, May 2015, July 2015, and February 2017, the Company received subpoenas and/or Civil Investigative Demands (CIDs) from the Attorneys General of California, Illinois, Oregon, New Jersey, Maryland and Washington under the authority of each state's consumer protection statutes. The Company has been informed that these states will serve as an executive committee on behalf of a group of 30 state Attorneys General. The subpoenas and/or CIDs from the executive committee states contain broad requests for information and the production of documents related to the Company's underwriting, securitization, servicing and collection of nonprime auto loans. The Company believes that several other companies in the auto finance sector have received similar subpoenas and CIDs. The Company is cooperating with the Attorneys General of the states involved. The Company believes that it is reasonably possible that it will suffer a loss related to the Attorneys General, however, any such loss is not currently estimable. • Mississippi Attorney General Lawsuit On January 10, 2017, the Attorney General of the State of Mississippi (the Mississippi AG) filed a lawsuit against the Company in the Chancery Court of the First Judicial District of Hinds County, State of Mississippi, captioned State of Mississippi ex rel. Jim Hood, Attorney General of the State of Mississippi v. Santander Consumer USA Inc., C.A. # G-2017-28. The complaint alleges that the Company engaged in unfair and deceptive business practices to induce Mississippi consumers to apply for loans that they could not afford. The complaint asserts claims under the Mississippi Consumer Protection Act (the MCPA) and seeks unspecified civil penalties, equitable relief and other relief. On March 31, 2017, the Company filed motions to dismiss the Mississippi AG’s lawsuit. On May 18, 2017, the Company filed a motion to stay the Mississippi AG’s lawsuit pending the resolution of an interlocutory appeal relating to the MCPA before the Mississippi Supreme Court in Purdue Pharma, L.P., et al. v. State, No. 2017-IA- 00300-SCT, on May 30, 2017, the Mississippi AG filed an opposition to the motion to stay, and on June 14, 2017, the Company filed a reply to the Mississippi AG’s opposition. On September 25, 2017, the court granted the motion to stay and ordered a stay of all proceedings, excluding discovery and final briefing on motions to dismiss. • SCRA Consent Order On February 25, 2015, the Company entered into a consent order with the DOJ, approved by the United States District Court for the Northern District of Texas, that resolves the DOJ's claims against the Company that certain of its repossession and collection activities during the period of time between January 2008 and February 2013 violated the Servicemembers Civil Relief Act (SCRA). The consent order requires the Company to pay a civil fine in the amount of $55 , as well as at least $9,360 to affected servicemembers consisting of $10 per servicemember plus compensation for any lost equity (with interest) for each repossession by the Company, and $5 per servicemember for each instance where the Company sought to collect repossession-related fees on accounts where a repossession was conducted by a prior account holder. The consent order also provides for monitoring by the DOJ for the Company’s SCRA compliance for a period of five years and requires the Company to undertake certain additional remedial measures. • ECOA Investigation On July 31, 2015, the CFPB notified the Company that it had referred to the DOJ certain alleged violations by the Company of the ECOA regarding statistical disparities in markups charged by automobile dealers to protected groups on loans originated by those dealers and purchased by the Company and the treatment of certain types of income in the Company’s underwriting process. On September 25, 2015, the DOJ notified the Company that it has initiated, based on the referral from the CFPB, an investigation under the ECOA of the Company's pricing of automobile loans. Agreements The Company committed to purchase certain new advances on personal revolving financings originated by a third party retailer, along with existing balances on accounts with new advances, for an initial term ending in April 2020 and renewing through April 2022 at the retailer's option. Each customer account generated under the agreements generally is approved with a credit limit higher than the amount of the initial purchase, with each subsequent purchase automatically approved as long as it does not cause the account to exceed its limit and the customer is in good standing. As of September 30, 2017 and December 31, 2016 , the Company was obligated to purchase $12,865 and $12,634 , respectively, in receivables that had been originated by the retailer but not yet purchased by the Company. The Company also is required to make a profit-sharing payment to the retailer each month if performance exceeds a specified return threshold. During the year ended December 31, 2015, the Company and the third-party retailer executed an amendment that, among other provisions, increases the profit-sharing percentage retained by the Company, gives the retailer the right to repurchase up to 9.99% of the existing portfolio at any time during the term of the agreement, and, provided that repurchase right is exercised, gives the retailer the right to retain up to 20% of new accounts subsequently originated. Under terms of an application transfer agreement with another OEM, the Company has the first opportunity to review for its own portfolio any credit applications turned down by the OEM's captive finance company. The agreement does not require the Company to originate any loans, but for each loan originated the Company will pay the OEM a referral fee. The Company also has agreements with SBNA to service recreational and marine vehicle portfolios. These agreements call for a periodic retroactive adjustment, based on cumulative return performance, of the servicing fee rate to inception of the contract. The Company recorded no adjustments for the three and nine months ended September 30, 2017 and downward adjustments of zero and $836 for the three and nine months ended September 30, 2016, respectively. In connection with the sale of retail installment contracts through securitizations and other sales, the Company has made standard representations and warranties customary to the consumer finance industry. Violations of these representations and warranties may require the Company to repurchase loans previously sold to on- or off-balance sheet Trusts or other third parties. As of September 30, 2017 , there were no loans that were the subject of a demand to repurchase or replace for breach of representations and warranties for the Company's asset-backed securities or other sales. In the opinion of management, the potential exposure of other recourse obligations related to the Company’s retail installment contract sales agreements will not have a material adverse effect on the Company’s consolidated financial position, results of operations, or cash flows. Santander has provided guarantees on the covenants, agreements, and obligations of the Company under the governing documents of its warehouse lines and privately issued amortizing notes. These guarantees are limited to the obligations of the Company as servicer. The Company provided SBNA with the first right to review and approve consumer vehicle lease applications, subject to volume constraints, under terms of a flow agreement that was terminated on May 9, 2015. The Company has indemnified SBNA for potential credit and residual losses on $48,226 of leases that had been originated by SBNA under this program but were subsequently determined not to meet SBNA’s underwriting requirements. This indemnification agreement is supported by an equal amount of cash collateral posted by the Company in an SBNA bank account. The collateral account balance is included in restricted cash in the Company's condensed consolidated balance sheets. As of September 30, 2017 , the balance in the collateral account is $22 . In January 2015, the Company additionally agreed to indemnify SBNA for residual losses, up to a cap, on certain leases originated under the flow agreement between September 24, 2014 and May 9, 2015 for which SBNA and the Company had differing residual value expectations at lease inception. As of September 30, 2017 and December 31, 2016 , the Company had a recorded liability of $2,983 and $2,691 , respectively, related to the residual losses covered under the agreement. On March 31, 2015, the Company executed a forward flow asset sale agreement with a third party under terms of which the Company committed to sell charged off loan receivables in bankruptcy status on a quarterly basis until sales total at least $200,000 in proceeds. On June 29, 2015, the Company and the third party executed an amendment to the forward flow asset sale agreement, which increased the committed sales of charged off loan receivables in bankruptcy status to $275,000 . On September 30, 2015, the Company and the third party executed a second amendment to the forward flow asset sale agreement, which required sales to occur quarterly. On November 13, 2015, the Company and the third party executed a third amendment to the forward flow asset sale agreement, which increased the committed sales of charged off loan receivables in bankruptcy status to $350,000 . However, any sale more than $275,000 is subject to a market price check. As of September 30, 2017 and December 31, 2016 , the remaining aggregate commitment was $108,403 and $166,167 , respectively. Employment Agreements Pursuant to the terms of a Separation Agreement among former CEO Thomas G. Dundon, the Company, DDFS LLC, SHUSA and Santander, upon satisfaction of applicable conditions, including receipt of required regulatory approvals, the Company will owe Mr. Dundon a cash payment of up to $115,139 (Note 11). Leases The Company has entered into various operating leases, primarily for office space and computer equipment. Lease expense incurred totaled $2,773 and $8,240 for the three and nine months ended September 30, 2017 , respectively and $2,749 and $8,588 for the three and nine months ended September 30, 2016 , respectively. The remaining obligations under lease commitments at September 30, 2017 are as follows: Years ended December 31, 2017 $ 2,992 2018 12,645 2019 12,773 2020 13,035 2021 12,910 Thereafter 56,794 Total $ 111,149

Related-Party Transactions

Related-Party Transactions	9 Months Ended
	Sep. 30, 2017
Related Party Transactions [Abstract]
Related-Party Transactions	Related-Party Transactions Related-party transactions not otherwise disclosed in these footnotes to the condensed consolidated financial statements include the following: Credit Facilities Interest expense, including unused fees, for affiliate lines/letters of credit for the three and nine months ended September 30, 2017 and 2016 , was as follows: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Line of credit agreement with Santander - New York Branch (Note 5) $ 8,158 $ 16,404 $ 46,624 $ 52,800 Debt facilities with SHUSA (Note 5) 26,211 6,023 59,105 14,892 Accrued interest for affiliate lines/letters of credit at September 30, 2017 and December 31, 2016 , was as follows: September 30, December 31, 2016 Line of credit agreement with Santander - New York Branch (Note 5) $ 1,409 $ 6,297 Debt facilities with SHUSA (Note 5) 15,192 1,737 In August 2015, under an agreement with Santander, the Company agreed to begin incurring a fee of 12.5 basis points (per annum) on certain warehouse lines, as they renew, for which Santander provides a guarantee of the Company's servicing obligations. The Company recognized guarantee fee expense of $1,672 and $4,620 for the three and nine months ended September 30, 2017 , respectively, and $1,616 and $4,783 for the three and nine months ended September 30, 2016 , respectively. As of September 30, 2017 and December 31, 2016 , the Company had $6,239 and $1,620 of related fees payable to Santander, respectively. Derivatives The Company has derivative financial instruments with Santander and affiliates with outstanding notional amounts of $4,372,800 and $7,259,400 at September 30, 2017 and December 31, 2016 , respectively (Note 7). The Company had a collateral overage on derivative liabilities with Santander and affiliates of $9,169 and $15,092 at September 30, 2017 and December 31, 2016 , respectively. Interest expense and mark-to-market adjustments on these agreements totaled $1,227 and $1,932 for the three months ended September 30, 2017 and 2016 , respectively, and $1,443 and $16,098 for the nine months ended September 30, 2017 and 2016 , respectively. Originations The Company is required to permit SBNA a first right to review and assess Chrysler Capital dealer lending opportunities, and SBNA is required to pay the Company a relationship management fee based upon the performance and yields of Chrysler Capital dealer loans held by SBNA. On April 15, 2016, the relationship management fee was replaced with an origination fee and annual renewal fee for each loan. The Company did no t recognize any relationship management fee income the three and nine month period ended September 30, 2017. The Company recognized relationship management fee income of zero and $419 for the three and nine month period ended September 30, 2016. The Company recognized $246 and $1,009 of origination fee income for the three months ended September 30, 2017 and 2016, respectively, and $1,213 and $2,292 of origination fee income for the nine months ended September 30, 2017 and 2016, respectively. Additionally, the Company recognized $357 and $158 of renewal fee income for the three months ended September 30, 2017 and 2016, respectively, and $935 and $271 for the nine months ended September 30, 2017 and 2016 , respectively. As of September 30, 2017 and December 31, 2016 , the Company had origination and renewal fees receivable from SBNA of $237 and $552 . The agreement also transferred the servicing of all Chrysler Capital receivables from dealers, including receivables held by SBNA and by the Company, from the Company to SBNA. Servicing fee expense under this agreement totaled $21 and $77 for the three and nine months ended September 30, 2017 . As of September 30, 2017 and December 31, 2016 , the Company had $16 and $21 , respectively, of servicing fees payable to SBNA. The Company may provide advance funding for dealer loans originated by SBNA, which is reimbursed to the Company by SBNA. The Company had no outstanding receivable from SBNA as of September 30, 2017 or December 31, 2016 for such advances. Under the agreement with SBNA, the Company may originate retail consumer loans in connection with sales of vehicles that are collateral held against floorplan loans by SBNA. Upon origination, the Company remits payment to SBNA, who settles the transaction with the dealer. The Company owed SBNA $3,482 and $2,761 related to such originations as of September 30, 2017 and December 31, 2016 , respectively. The Company received a $9,000 referral fee in connection with the original arrangement and was amortizing the fee into income over the ten -year term of the agreement. The remaining balance of the referral fee SBNA paid to the Company in connection with the original sourcing and servicing agreement is considered a referral fee in connection with the new agreements and will continue to be amortized into income through the July 1, 2022 termination date of the new agreements. As of September 30, 2017 and December 31, 2016 , the unamortized fee balance was $5,175 and $5,850 , respectively. The Company recognized $225 and $675 of income related to the referral fee for the three and nine months ended September 30, 2017 and 2016 , respectively. The Company also has agreements with SBNA to service auto retail installment contracts and recreational and marine vehicle portfolios. Servicing fee income recognized under these agreements totaled $887 and $1,140 for the three months ended September 30, 2017 and 2016 , respectively and $2,658 and $4,457 for the nine months ended September 30, 2017 and 2016 , respectively. Other information on the serviced auto loan and retail installment contract portfolios for SBNA as of September 30, 2017 and December 31, 2016 is as follows: September 30, December 31, Total serviced portfolio $ 427,168 $ 531,117 Cash collections due to owner 13,425 21,427 Servicing fees receivable 983 1,123 During the three months ended September 30, 2017 , the Company sold certain receivables previously acquired with deteriorated credit quality to SBNA. These loans were sold with a gain of $35,927 recognized in investment losses, net in the accompanying condensed consolidated financial statements. The Company will continue to perform the servicing of these assets and has recorded $231 of servicing fee income from SBNA during the period ended September 30, 2017. Other information on the serviced receivables for SBNA as of September 30, 2017 is as follows: September 30, Total serviced portfolio $ 129,727 Cash collections due to owner 273 Servicing fees receivable 110 Beginning in 2016, the Company agreed to pay SBNA a market rate-based fee expense for payments made at SBNA retail branch locations for accounts originated/serviced by the Company and the costs associated with modifying the Advanced Teller platform to the payments. The Company incurred $62 and $178 for these services during the three and nine months ended September 30, 2017 . Flow Agreements Until May 9, 2015, the Company was party to a flow agreement with SBNA whereby SBNA had the first right to review and approve Chrysler Capital consumer vehicle lease applications. The Company could review any applications declined by SBNA for the Company’s own portfolio. The Company received an origination fee on all leases originated under this agreement and continues to service these vehicles leases. Pursuant to the Chrysler Agreement, the Company pays FCA on behalf of SBNA for residual gains and losses on the flowed leases. Servicing fee income recognized on leases serviced for SBNA totaled $1,066 and $1,742 for the three months ended September 30, 2017 and 2016, respectively, and $4,115 and $5,741 for the nine months ended September 30, 2017 and 2016 , respectively. Other information on the consumer vehicle lease portfolio serviced for SBNA as of September 30, 2017 and December 31, 2016 is as follows: September 30, December 31, Total serviced portfolio $ 459,524 $ 1,297,317 Cash collections due to owner — 78 Origination and servicing fees receivable 2,020 926 Revenue share reimbursement receivable 3,365 612 On June 30, 2014, the Company entered into an indemnification agreement with SBNA whereby the Company indemnifies SBNA for any credit or residual losses on a pool of $48,226 in leases originated under the flow agreement. The covered leases are non-conforming units because they did not meet SBNA’s credit criteria at origination. At the time of the agreement, the Company established a $48,226 collateral account with SBNA in restricted cash that will be released over time to SBNA, in the case of losses, and the Company, in the case of payments and sale proceeds. As of September 30, 2017 and December 31, 2016 , the balance in the collateral account is $22 and $11,329 , respectively. The Company recognized no indemnification expense for the three and nine months ended September 30, 2017 , and 2016 . Also, in January 2015, the Company agreed to indemnify SBNA for residual losses, up to a cap, on certain leases originated under the flow agreement between September 24, 2014 and May 9, 2015 for which SBNA and the Company had differing residual value expectations at lease inception. At the time of the agreement, the Company established a collateral account held by SBNA to cover the expected losses, as of September 30, 2017 and December 31, 2016, the balance in the collateral account was $2,713 and $2,706 , respectively. As of September 30, 2017 and December 31, 2016 , the Company had a recorded liability of $2,983 and $2,691 respectively, related to the residual losses covered under the agreement. Securitizations On March 29, 2017, the Company entered into a Master Securities Purchase Agreement (MSPA) with Santander, whereby it has the option to sell a contractually determined amount of eligible prime loans to Santander, through the SPAIN securitization platform, for a term ending in December 2018. The Company will provide servicing on all loans originated under this arrangement. As at September 30, 2017 , the Company sold $1,236,331 of loans under this arrangement. Under a separate securities purchase agreement, the Company sold $1,347,010 of prime loans to Santander during the three months ended September 30, 2017. A total loss of $6,846 and $13,026 was recognized for the three and nine months period ended September 30, 2017 , which is included in investment losses, net in the accompanying condensed consolidated financial statements. Servicing fee income recognized totaled $529 and $1,419 for the three and nine ended September 30, 2017 . The Company had $14,083 of collections due to Santander as of September 30, 2017 . Employment Agreements On July 2, 2015, the Company announced the departure of Thomas G. Dundon from his roles as Chairman of the Board and CEO of the Company, effective as of the close of business on July 2, 2015. In connection with his departure, and subject to the terms and conditions of his Employment Agreement, including Mr. Dundon's execution of a release of claims against the Company, Mr. Dundon became entitled to receive certain payments and benefits under his Employment Agreement. Also in connection with his departure, Mr. Dundon entered into a Separation Agreement with the Company, DDFS LLC, SHUSA and Santander. Subject to applicable regulatory approvals and law, the Separation Agreement provided, among other things, that Mr. Dundon’s outstanding stock options would remain exercisable until the third anniversary of his resignation, and subject to certain time limitations, Mr. Dundon would be permitted to exercise such options in whole, but not in part, and settle such options for a cash payment equal to the difference between the closing trading price of a share of Company common stock as of the date immediately preceding such exercise and the exercise price of such option. Mr. Dundon exercised this cash settlement option on July 2, 2015. The Separation Agreement also provided for the modification of terms for certain other equity-based awards (Note 14), subject to limitations of banking regulators and applicable law. The Separation Agreement also provided that Mr. Dundon would serve as a consultant to the Company for twelve months from the date of the Separation Agreement at a mutually agreed rate, subject to required regulatory approvals. As of September 30, 2017 , the Company has not made any payments to Mr. Dundon, nor recorded any liability or obligation arising from or pursuant to the terms of the Separation Agreement. If all applicable conditions are satisfied, including receipt of required regulatory approvals and satisfaction of any conditions thereto, the Company will be obligated to make a cash payment to Mr. Dundon of up to $115,139 . This amount would be recorded as compensation expense in the condensed consolidated statement of income and comprehensive income in the period in which approval is obtained. Also, in connection with, and pursuant to, the Separation Agreement, on July 2, 2015, Mr. Dundon, the Company, DDFS LLC, SHUSA and Santander entered into an amendment to the Shareholders Agreement (the Second Amendment). The Second Amendment amended, for purposes of calculating the price per share to be paid in the event that a put or call option was exercised with respect to the shares of Company Common Stock owned by DDFS LLC in accordance with the terms and conditions of the Shareholders Agreement, the definition of the term “Average Stock Price” to mean $26.83 . Pursuant to the Separation Agreement, SHUSA was deemed to have delivered as of July 3, 2015 an irrevocable notice to exercise the call option with respect to all 34,598,506 shares of the Company's Common Stock owned by DDFS LLC and consummate the transactions contemplated by such call option notice, subject to the receipt of required bank regulatory approvals and any other approvals required by law (the Call Transaction). Because the Call Transaction was not consummated prior to the Call End Date, DDFS LLC is free to transfer any or all shares of Company Common Stock it owns, subject to the terms and conditions of the Amended and Restated Loan Agreement, dated as of July 16, 2014, between DDFS LLC and Santander (the Loan Agreement). The Loan Agreement provides for a $300,000 revolving loan which, as of the maturity date, had a $290,000 unpaid principal balance. Pursuant to the Loan Agreement, 29,598,506 shares of the Company’s common stock owned by DDFS LLC are pledged as collateral under a related pledge agreement (the Pledge Agreement). Because the Call Transaction was not completed on or before the Call End Date, interest began accruing on the price paid per share in the Call Transaction at the overnight LIBOR rate on the third business day preceding the consummation of the Call Transaction plus 100 basis points with respect to any shares of Company Common Stock ultimately sold in the Call Transaction. The Shareholder Agreement further provides that Santander may, at its option, become the direct beneficiary of the Call Option. If consummated in full, SHUSA would pay DDFS LLC $928,278 plus interest that has accrued since the Call End Date. To date, the Call Transaction has not been consummated. Pursuant to the Loan Agreement, if at any time the value of the Common Stock pledged under the Pledge Agreement is less than 150% of the aggregate principal amount outstanding under the Loan Agreement, DDFS LLC has an obligation to either (a) repay a portion of such outstanding principal amount such that the value of the pledged collateral is equal to at least 200% of the outstanding principal amount, or (b) pledge additional shares of Company Common Stock such that the value of the additional shares of Common Stock, together with the 29,598,506 shares already pledged under the Pledge Agreement, is equal to at least 200% of the outstanding principal amount. The value of the pledged collateral is less than 150% of aggregate principal amount outstanding under the Loan Agreement, and DDFS LLC has not taken any of the collateral posting actions described in clauses (a) or (b) above. If Santander declares the borrower’s obligations under the Loan Agreement due and payable as a result of an event of default (including with respect to the collateral posting obligations described above), under the terms of the Loan Agreement and the Pledge Agreement, Santander’s ability to rely upon the shares of SC Common Stock subject to the Pledge Agreement is, subject to certain exceptions, limited to the exercise by SHUSA and/or Santander of the right to deliver the call option notice and to consummate the Call Transaction at the price specified in the Shareholders Agreement. If the borrower fails to pay obligations under the Loan Agreement when due, including because of Santander’s declaration of such obligations as due and payable as a result of an event of default, a higher default interest rate will apply to such overdue amounts. In connection with, and pursuant to, the Separation Agreement, on July 2, 2015, DDFS LLC and Santander entered into an amendment to the Loan Agreement and an amendment to the Pledge Agreement that provide, among other things, that outstanding balance under the Loan Agreement shall become due and payable upon the consummation of the Call Transaction and that the amount otherwise payable to DDFS LLC under the Call Transaction shall be reduced by the amount outstanding under the Loan Agreement, including principal, interest and fees, and further that any net cash proceeds received by DDFS LLC on account of sales of Company Common Stock after the Call End Date shall be applied to the outstanding balance under the Loan Agreement. On August 31, 2016, Mr. Dundon, DDFS LLC, the Company, Santander and SHUSA entered into a Second Amendment to the Separation Agreement, and Mr. Dundon, DDFS LLC, Santander and SHUSA entered into a Third Amendment to the Shareholders Agreement, whereby the price per share to be paid to DDFS LLC in connection with the Call Transaction was reduced from $26.83 to $26.17 , the arithmetic mean of the daily volume-weighted average price for a share of Company common stock for each of the ten consecutive complete trading days immediately prior to July 2, 2015, the date on which the call option was exercised. On April 17, 2017, the Loan Agreement matured and became due and payable with an unpaid principal balance of approximately $290,000 as of that date. Because the borrower failed to pay obligations under the Loan Agreement on April 17, 2017, the borrower is in default and is currently being charged the default interest rate as defined by the Loan Agreement. The Loan Agreement generally defines the default interest rate as the Base Rate plus 2% . The Base Rate as defined in the Loan Agreement is the higher of (i) the federal funds rate plus ½ of 1% or (ii) the prime rate, which is the annual rate of interest publicly announced by the New York Branch of Santander from time to time. As of April 21, 2017, the prime rate as announced by the New York Branch of Santander was 4% . The parties continue in discussions on these matters. Any future agreement on these matters would be subject to any required internal and regulatory approvals and execution of definitive documentation. Other related-party transactions As of September 30, 2017 , Jason Kulas and Mr. Dundon, both being former members of the Board and CEO of the Company, along with a Santander employee who was a member of the Board until the second quarter of 2015, each had a minority equity investment in a property in which the Company leases 373,000 square feet as its corporate headquarters. For the three months ended September 30, 2017 and 2016 , the Company recorded $1,275 and $1,361 , respectively, in lease expenses on this property and for the nine months ended September 30, 2017 and 2016 , the Company recorded $3,836 and $3,832 , respectively, in lease expenses on this property. The Company subleases approximately 13,000 square feet of its corporate office space to SBNA. For the three months ended September 30, 2017 and 2016 , the Company recorded $41 in sublease revenue on this property, and for the nine months ended September 30, 2017 and 2016 , the Company recorded $122 in sublease revenue on this property. Future minimum lease payments over the remainder of the 9 -year term of the lease, which extends through 2026, total $64,050 . The Company's wholly-owned subsidiary, Santander Consumer International Puerto Rico, LLC (SCI), opened deposit accounts with Banco Santander Puerto Rico, an affiliated entity. As of September 30, 2017 and December 31, 2016 , SCI had cash of $72,170 and $98,836 , respectively, on deposit with Banco Santander Puerto Rico. During 2015, Santander Investment Securities Inc. (SIS), an affiliated entity, purchased an investment of $2,000 in the Class A3 notes of CCART 2013-A, a securitization Trust formed by the Company in 2013. Although CCART 2013-A is not a consolidated entity of the Company, the Company continues to service the assets of the associated trust. SIS also serves as co-manager on certain of the Company’s securitizations. Amounts paid to SIS as co-manager for the three months ended September 30, 2017 and 2016 , totaled $100 and zero , respectively, and totaled $1,259 and $1,049 for the nine months ended September 30, 2017 and 2016 , respectively, and are included in debt issuance costs in the accompanying condensed consolidated financial statements. Produban Servicios Informaticos Generales S.L., a Santander affiliate, is under contract with the Company to provide professional services, telecommunications, and internal and/or external applications. Expenses incurred, which are included as a component of other operating costs in the accompanying consolidated statements of income, totaled $16 and $64 for the three and nine months ended September 30, 2016 . No such expenses were incurred for the three and nine months ended September 30, 2017. The Company is party to an MSA with a company in which it has a cost method investment and holds a warrant to increase its ownership if certain vesting conditions are satisfied. This cost method investment was carried at a value of zero in the Company's condensed consolidated balance sheets as of September 30, 2017 , as it had been fully impaired. The MSA enables the Company to review point-of-sale credit applications of retail store customers. During the six months ending June 30, 2016, the Company did not originate any loans under the MSA and effective August 17, 2016, the Company ceased funding new originations from all of the retailers for which it reviews credit applications under this MSA. Beginning in 2017, the Company and SBNA entered into a Credit Card Agreement (Card Agreement) whereby SBNA will provide credit card services for travel and related business expenses and for vendor payments. This service is at zero cost but generate rebates based on purchases made. As at September 30, 2017 , the activities associated with the program were insignificant. Effective April 1, 2017, the Company contracted Aquanima, a Santander affiliate, to provide procurement services. Expenses incurred totaled $142 and $354 for the three and nine months ended September 30, 2017 . As of September 30, 2017, the amount outstanding was $354 .

Computation of Basic and Dilute

Computation of Basic and Diluted Earnings per Common Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings per Common Share	Computation of Basic and Diluted Earnings per Common Share Earnings per common share (EPS) is computed using the two-class method required for participating securities. Restricted stock awards whereby the holders of such shares have non-forfeitable dividend rights in the event of a declaration of a dividend on the Company’s common shares are considered to be participating securities. The calculation of diluted EPS excludes 778,019 employee stock option awards for the three and nine months ended September 30, 2017 , as the effect of those securities would be anti-dilutive if exercised and issued. The calculation of diluted EPS excludes 1,933,659 employee stock option awards for the three and nine months ended September 30, 2016, as the effect of those securities would be anti-dilutive if exercised and issued. Restricted stock units of zero and 620,625 for three and nine months ended September 30, 2017 ( nil for three and nine months ended September 30, 2016), respectively, were excluded from the calculation of diluted EPS as the effect of those securities would be anti-dilutive. The following table represents EPS numbers for the three and nine months ended September 30, 2017 and 2016 : Three Months Ended Nine Months Ended 2017 2016 2017 2016 Earnings per common share Net income $ 199,388 $ 213,547 $ 607,490 $ 705,191 Weighted average number of common shares outstanding before restricted participating shares (in thousands) 359,496 357,994 359,274 357,830 Weighted average number of participating restricted common shares outstanding (in thousands) 123 350 123 350 Weighted average number of common shares outstanding (in thousands) 359,619 358,344 359,397 358,180 Earnings per common share $ 0.55 $ 0.60 $ 1.69 $ 1.97 Earnings per common share - assuming dilution Net income $ 199,388 $ 213,547 $ 607,490 $ 705,191 Weighted average number of common shares outstanding (in thousands) 359,619 358,344 359,397 358,180 Effect of employee stock-based awards (in thousands) 841 1,743 672 1,455 Weighted average number of common shares outstanding - assuming dilution (in thousands) 360,460 360,088 360,069 359,635 Earnings per common share - assuming dilution $ 0.55 $ 0.59 $ 1.69 $ 1.96

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value measurement requires that valuation techniques maximize the use of observable inputs and minimize the use of unobservable inputs and also establishes a fair value hierarchy that categorizes into three levels the inputs to valuation techniques used to measure fair value as follows: Level 1 inputs are quoted prices in active markets for identical assets or liabilities that can be accessed as of the measurement date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Level 2 inputs are those other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. Level 3 inputs are those that are unobservable for the asset or liability and are used to measure fair value to the extent relevant observable inputs are not available. Financial Instruments Disclosed, But Not Carried, At Fair Value The following tables present the carrying value and estimated fair value of the Company’s financial assets and liabilities disclosed, but not carried, at fair value at September 30, 2017 and December 31, 2016 , and the level within the fair value hierarchy: September 30, 2017 Carrying Estimated Level 1 Level 2 Level 3 Assets: Cash and cash equivalents (a) $ 397,311 $ 397,311 $ 397,311 $ — $ — Finance receivables held for investment, net (b) 22,540,414 23,590,105 — — 23,590,105 Restricted cash (a) 2,559,246 2,559,246 2,559,246 — — Total $ 25,496,971 $ 26,546,662 $ 2,956,557 $ — $ 23,590,105 Liabilities: Notes payable — credit facilities (c) $ 4,965,888 $ 4,965,888 $ — $ — $ 4,965,888 Notes payable — secured structured financings (d) 23,258,363 23,541,974 — 13,889,699 9,652,275 Notes payable — related party (e) 2,369,850 2,369,850 — — 2,369,850 Total $ 30,594,101 $ 30,877,712 $ — $ 13,889,699 $ 16,988,013 December 31, 2016 Carrying Estimated Level 1 Level 2 Level 3 Assets: Cash and cash equivalents (a) $ 160,180 $ 160,180 $ 160,180 $ — $ — Finance receivables held for investment, net (b) 23,456,506 24,630,599 — — 24,630,599 Restricted cash (a) 2,757,299 2,757,299 2,757,299 — — Total $ 26,373,985 $ 27,548,078 $ 2,917,479 $ — $ 24,630,599 Liabilities: Notes payable — credit facilities (c) $ 6,739,817 $ 6,739,817 $ — $ — $ 6,739,817 Notes payable — secured structured financings (d) 21,608,889 21,712,691 — 13,530,045 8,182,646 Notes payable — related party (e) 2,975,000 2,975,000 — — 2,975,000 Total $ 31,323,706 $ 31,427,508 $ — $ 13,530,045 $ 17,897,463 (a) Cash and cash equivalents and restricted cash — The carrying amount of cash and cash equivalents, including restricted cash, is at an approximated fair value as the instruments mature within 90 days or less and bear interest at market rates. (b) Finance receivables held for investment, net — Finance receivables held for investment, net are carried at amortized cost, net of an allowance. The estimated fair value for the underlying financial instruments are determined as follows: • Retail installment contracts held for investment, net — The estimated fair value is calculated based on a DCF in which the Company uses significant unobservable inputs on key assumptions, including historical default rates and adjustments to reflect prepayment rates, expected recovery rates, discount rates reflective of the cost of funding, and credit loss expectations. • Receivables from dealers held for investment and Capital lease receivables, net — Receivables from dealers held for investment are carried at amortized cost, net of credit loss allowance. Capital lease receivables are carried at gross investment, net of unearned income and allowance for lease losses. Management believes that the terms of these credit agreements approximate market terms for similar credit agreements. (c) Notes payable — credit facilities — The carrying amount of notes payable related to revolving credit facilities is estimated to approximate fair value. Management believes that the terms of these credit agreements approximate market terms for similar credit agreements as the facilities are subject to short-term floating interest rates that approximate rates available to the Company. (d) Notes payable — secured structured financings — The estimated fair value of notes payable related to secured structured financings is calculated based on market observable prices and spreads for the Company's publicly traded debt and market observed prices of similar notes issued by the Company, or recent market transactions involving similar debt with similar credit risks, which are considered level 2 inputs. The estimated fair value of notes payable related to privately issued amortizing notes is calculated based on a combination of discounted cash flow analysis and market observable spreads for similar liabilities in which the Company uses significant unobservable inputs on key assumptions, including historical default rates and adjustments to reflect prepayment rates, discount rates reflective of the cost of funding, and credit loss expectations, which are considered level 3 inputs. (e) Notes payable — related party — The carrying amount of notes payable to a related party is estimated to approximate fair value as the facilities are subject to short-term floating interest rates that approximate rates available to the Company. Financial Instruments Measured At Fair Value On A Recurring Basis The following tables present the Company’s assets and liabilities that are measured at fair value on a recurring basis at September 30, 2017 and December 31, 2016 , and the level within the fair value hierarchy: Fair Value Measurements at September 30, 2017 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other assets — trading interest rate caps (a) $ 111,515 $ — $ 111,515 $ — Due from affiliates — trading interest rate caps (a) 5,053 — 5,053 — Other assets — cash flow hedging interest rate swaps (a) 35,381 — 35,381 — Due from affiliates — cash flow hedging interest rate swaps (a) 4,605 — 4,605 — Other assets — trading interest rate swaps (a) 7,364 — 7,364 — Due from affiliates — trading interest rate swaps (a) 1,437 — 1,437 — Other assets — trading options for interest rate caps (a) 16,529 — 16,529 — Due from affiliates — trading options for interest rate caps (a) 9,775 — 9,775 — Other liabilities — trading options for interest rate caps (a) 111,510 — 111,510 — Due to affiliates — trading options for interest rate caps (a) 5,053 — 5,053 — Other liabilities — trading interest rate caps (a) 16,480 — 16,480 — Due to affiliates — trading interest rate caps (a) 9,775 — 9,775 — Retail installment contracts acquired individually (c) 24,799 — — 24,799 Fair Value Measurements at December 31, 2016 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other assets — trading interest rate caps (a) $ 68,676 $ — $ 68,676 $ — Due from affiliates — trading interest rate caps (a) 7,593 — 7,593 — Other assets — cash flow hedging interest rate swaps (a) 41,471 — 41,471 — Due from affiliates — cash flow hedging interest rate swaps (a) 4,080 — 4,080 — Other assets — trading interest rate swaps (a) 783 — 783 — Due from affiliates — trading interest rate swaps (a) 1,292 — 1,292 — Other liabilities — trading options for interest rate caps (a) 68,688 — 68,688 — Due to affiliates — trading options for interest rate caps (a) 7,593 — 7,593 — Other liabilities — cash flow hedging interest rate swaps (a) 482 — 482 — Due to affiliates — cash flow hedging interest rate swaps (a) 451 — 451 — Other liabilities — trading interest rate swaps (a) 42 — 42 — Due to affiliates — trading interest rate swaps (a) 95 — 95 — Other liabilities — total return settlement (a,b) 30,618 — — 30,618 Retail installment contracts acquired individually (c) 24,495 — — 24,495 (a) The valuation is determined using widely accepted valuation techniques including a DCF on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivative, including the period to maturity, and uses observable market-based inputs. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurement of its derivatives. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings and guarantees. The Company utilizes the exception in ASC 820-10-35-18D (commonly referred to as the “portfolio exception”) with respect to measuring counterparty credit risk for instruments (Note 7). (b) The significant unobservable inputs for total return settlement derivative contracts used in the fair value measurement of the Company's liabilities are discount percentages, which are based on comparable financial instruments. (c) For certain retail installment contracts reported in finance receivables held for investment, net, the Company has elected the fair value option. The fair values of the retail installment contracts are estimated using a DCF model. When estimating the fair value using this model, the Company uses significant unobservable inputs on key assumptions, which includes historical default rates and adjustments to reflect prepayment rates based on available data from a comparable market securitization of similar assets, discount rates reflective of the cost of funding of debt issuance and recent historical equity yields, and recovery rates based on the average severity utilizing reported severity rates and loss severity utilizing available market data from a comparable securitized pool. Accordingly, retail installment contracts held for investment are classified as Level 3. Changes in the fair value are recorded in investment gains (losses), net in the condensed consolidated statement of income. The following table presents the changes in retail installment contracts held for investment balances classified as Level 3 balances for the three and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Balance — beginning of period $ 30,489 $ 12,602 $ 24,495 $ 6,770 Additions / issuances — 11,838 19,727 23,712 Net collection activities (6,517 ) (5,740 ) (23,640 ) (11,782 ) Gains recognized in earnings 827 — 4,217 — Balance — end of period $ 24,799 $ 18,700 $ 24,799 $ 18,700 The following table presents the changes in the total return settlement balance, which is classified as Level 3, for the three and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Balance — beginning of period $ 31,123 $ 53,543 $ 30,618 $ 53,432 (Gains)/losses recognized in earnings — (343 ) 505 2,337 Settlements (31,123 ) (23,336 ) (31,123 ) (25,905 ) Balance — end of period $ — $ 29,864 $ — $ 29,864 The Company did not have any transfers between Levels 1 and 2 during the three and nine months ended September 30, 2017 and 2016 . There were no amounts transferred into or out of Level 3 during the three and nine months ended and September 30, 2017 and 2016 . Financial Instruments Measured At Fair Value On A Nonrecurring Basis The following table presents the Company’s assets that are measured at fair value on a nonrecurring basis at September 30, 2017 and December 31, 2016 , and the level within the fair value hierarchy: Fair Value Measurements at September 30, 2017 Total Quoted Prices Significant Significant Lower of cost or fair value expense for the nine months ended September 30, 2017 Other assets — vehicles (a) $ 206,076 $ — $ 206,076 $ — $ — Personal loans held for sale (b) 929,549 — — 929,549 237,980 Retail installment contracts held for sale (c) 845,910 — — 845,910 8,542 Auto loans impaired due to bankruptcy (d) 101,990 — 101,990 — 65,584 Fair Value Measurements at December 31, 2016 Total Quoted Prices Significant Significant Lower of cost or fair value expense for the year ended December 31, 2016 Other assets — vehicles (a) $ 257,382 $ — $ 257,382 $ — $ — Personal loans held for sale (b) 1,077,600 — — 1,077,600 414,703 Retail installment contracts held for sale (c) 1,045,815 — — 1,045,815 8,913 (a) The Company estimates the fair value of its vehicles, which are obtained either through repossession or lease termination, using historical auction rates and current market levels of used car prices. (b) Represents the portion of the portfolio specifically impaired as of period-end. The estimated fair value for personal loans held for sale is calculated based on a combination of estimated cash flows and market rates for similar loans with similar credit risks and a DCF analysis in which the Company uses significant unobservable inputs on key assumptions, including historical default rates and adjustments to reflect prepayment rates, discount rates reflective of the cost of funding, and credit loss expectations. The lower of cost or fair value adjustment for personal loans held for sale includes customer default activity and adjustments related to the net change in the portfolio balance during the reporting period. (c) The estimated fair value is calculated based on a DCF analysis in which the Company uses significant unobservable inputs on key assumptions, including expected default rates, prepayment rates, recovery rates, and discount rates reflective of the cost of funds and appropriate rate of returns. (d) For loans that are considered collateral-dependent, such as certain bankruptcy loans, impairment is measured based on the fair value of the collateral, less its estimated cost to sell. For the underlying collateral, the estimated fair value is obtained using historical auction rates and current market levels of used car prices. Quantitative Information about Level 3 Fair Value Measurements The following table presents quantitative information about the significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis at September 30, 2017 : Financial Instruments Fair Value at September 30, 2017 Valuation Technique Unobservable Inputs Range Financial Assets: Retail installment contracts held for investment $ 24,799 Discounted Cash Flow Discount Rate 9.0% - 9.5% Default Rate 18% - 22% Prepayment Rate 6% Personal loans held for sale $ 929,549 Market / Income Approach Discount Rate 15% - 30% Default Rate 30% - 40% Retail installment contracts held for sale $ 845,910 Discounted Cash Flow Discount Rate 3% - 8% Default Rate 3.8% - 8.3% Prepayment Rate 17.8%

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Benefit Plans	Employee Benefit Plans The Company has granted stock options to certain executives, other employees, and independent directors under the 2011 Management Equity Plan (the Plan), which enabled the Company to make stock awards up to a total of approximately 29 million common shares (net of shares canceled and forfeited), and expired on January 31, 2015. The Company has granted stock options, restricted stock awards and restricted stock units (RSUs) under the Omnibus Incentive Plan, which was established in 2013 and enables the Company to grant awards of cash and of non-qualified and incentive stock options, stock appreciation rights, restricted stock awards, RSUs, and other awards that may be settled in or based upon the value of the Company's common stock up to a total of 5,192,640 common shares. The Omnibus Incentive Plan was amended and restated as of June 16, 2016. Stock options granted have an exercise price based on the estimated fair market value of the Company’s common stock on the grant date. The stock options expire ten years after grant date and include both time vesting options and performance vesting options. The fair value of the stock options is amortized into income over the vesting period as time and performance vesting conditions are met. Compensation expense related to the 583,890 shares of restricted stock the Company has issued to certain executives is recognized over a five -year vesting period, with $(220) and $182 recorded for the three months ended September 30, 2017 and 2016 , and $139 and $543 for the nine months ended September 30, 2017 and 2016 , respectively, A summary of the Company’s stock options and related activity as of and for the nine months ended September 30, 2017 is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Options outstanding at January 1, 2017 4,295,830 $ 12.70 5.6 $ 12,982 Granted — — — — Exercised (594,110 ) 9.40 — 2,503 Expired (142,795 ) 12.64 — — Forfeited (653,258 ) 14.57 — — Options outstanding at September 30, 2017 2,905,667 12.96 5.0 6,999 Options exercisable at September 30, 2017 2,641,214 $ 12.15 4.8 $ 8,517 In connection with compensation restrictions imposed on certain executive officers and other employees by the European Central Bank under the Capital Requirements Directive IV prudential rules, which require a portion of such officers' and employees' variable compensation to be paid in the form of equity, the Company periodically grants RSUs. Such RSUs were granted during the nine months ended September 30, 2017 . Under the Company's Omnibus Incentive Plan, a portion of these RSUs vest immediately upon grant, and a portion vest annually over the following three or five years . The Company also has granted certain officers RSUs that vest over either a three or five year period, with vesting dependent on Banco Santander performance over that time. After the shares subject to the RSUs vest and are settled, they are subject to transfer and sale restrictions for one year . The Company also has granted certain directors RSUs that vest either upon the earlier of the first anniversary of grant date or the first annual meeting following the grant date. On July 2, 2015, Mr. Dundon exercised a right under the Separation Agreement to settle his vested options for a cash payment. Subject to limitations of banking regulators and applicable law, Mr. Dundon’s Separation Agreement also provided that his unvested stock options would vest in full and his unvested restricted stock awards would continue to vest in accordance with their terms as if he remained employed by the Company. In addition, any service-based vesting requirements that were applicable to Mr. Dundon’s outstanding RSUs in respect of his 2014 annual bonus were waived, and such RSUs continue to vest and be settled in accordance with the underlying award agreement. However, because the Separation Agreement did not receive the required regulatory approvals within 60 days of Mr. Dundon’s termination without cause, both the vested and unvested stock options are considered to have expired.

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity Treasury Stock The Company had 123,507 shares of treasury stock outstanding, with a cost of $2,004 , as of September 30, 2017 and 94,595 shares of treasury stock outstanding, with a cost of $1,600 , as of December 31, 2016 . Prior to the IPO, the Company repurchased 3,154 shares as a result of an employee leaving the Company. Additionally, 120,353 shares were withheld to cover income taxes related to the vesting of RSUs awarded to certain executive officers. The value of the treasury stock is immaterial and included within additional paid-in-capital. Accumulated Other Comprehensive Income (Loss) A summary of changes in accumulated other comprehensive income (loss), net of tax, for the three and nine months ended September 30, 2017 and 2016 is as follows: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Beginning balance, unrealized gains (losses) on cash flow hedges $ 27,860 $ (50,766 ) $ 28,259 $ 2,125 Other comprehensive gain (loss) before reclassifications 1,061 17,391 (3,062 ) (50,949 ) Amounts reclassified out of accumulated other comprehensive income (loss) (a) (1,440 ) 6,777 2,284 22,226 Ending balance, unrealized gains (losses) on cash flow hedges $ 27,481 $ (26,598 ) $ 27,481 $ (26,598 ) (a) Amounts reclassified out of accumulated other comprehensive income (loss) during the three and nine months ended September 30, 2017 and 2016 consist of the following: Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Reclassification Amount reclassified Income statement line item Amount reclassified Income statement line item Cash flow hedges: Settlements of derivatives $ (1,461 ) Interest expense $ 10,799 Interest expense Tax expense (benefit) 21 (4,022 ) Net of tax $ (1,440 ) $ 6,777 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 Reclassification Amount reclassified Income statement line item Amount reclassified Income statement line item Cash flow hedges: Settlements of derivatives $ 3,158 Interest expense $ 35,442 Interest expense Tax expense (benefit) (874 ) (13,216 ) Net of tax $ 2,284 $ 22,226 Dividends On October 25, 2017, the Company declared a cash dividend of $0.03 per share, to be paid November 17, 2017 to shareholders of record as of close of business on November 7, 2017. The Company's capital action plan also includes dividend payments for the Company’s stockholders of $0.05 per share in the first and second quarters of 2018.

Investment Losses, Net

Investment Losses, Net	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Losses, Net	Investment Losses, Net When the Company sells individually acquired retail installment contracts, personal loans or leases, the Company recognizes a gain or loss for the difference between the cash proceeds and carrying value of the assets sold. The gain or loss is recorded in investment gains (losses), net. Lower of cost or market adjustments on the recorded investment of finance receivables held for sale are also recorded in investment gains (losses), net. Investment losses, net was comprised of the following for the three and nine months ended September 30, 2017 and 2016 : Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Gain (loss) on sale of loans and leases $ 29,974 $ (3,765 ) $ 16,913 $ (1,418 ) Lower of cost or market adjustments (84,718 ) (97,532 ) (246,522 ) (266,506 ) Other gains, losses and impairments, net 2,152 (4,753 ) 1,096 (8,491 ) $ (52,592 ) $ (106,050 ) $ (228,513 ) $ (276,415 ) The lower of cost or market adjustments for the three and nine months ended September 30, 2017 included $112,055 and $336,413 in customer default activity, respectively, and net favorable adjustments of $27,337 and $89,891 , respectively, primarily related to net changes in the unpaid principal balance on the personal lending portfolio, most of which has been classified as held for sale since September 30, 2015. The lower of cost or market adjustments for the three and nine months ended September 30, 2016 included $114,477 and $312,993 in customer default activity and favorable adjustments of 18,831 and 48,373 , respectively, related to net changes in the unpaid principal balance on the personal lending portfolio. The key driver to continued write-downs due to customer default activity, is the lower of cost or market adjustment recorded for each new originated loan, based on forecasted lifetime loss.

Description of Business, Basi24

Description of Business, Basis of Presentation, and Significant Accounting Policies and Practices (Policies)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated financial statements include the accounts of the Company and its subsidiaries, including certain Trusts, which are considered variable interest entities (VIEs). The Company also consolidates other VIEs for which it was deemed to be the primary beneficiary. All intercompany balances and transactions have been eliminated in consolidation. The accompanying condensed consolidated financial statements as of September 30, 2017 and December 31, 2016 , and for the three and nine months ended September 30, 2017 and 2016 , have been prepared in accordance with U.S. GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, these financial statements contain all adjustments, consisting of normal recurring adjustments, necessary for the fair statement of the financial position, results of operations and cash flows for the periods indicated. Results of operations for the periods presented herein are not necessarily indicative of results of operations for the entire year. These financial statements should be read in conjunction with the 2016 Annual Report on Form 10-K. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and the disclosures of contingent assets and liabilities, as of the date of the financial statements and the amount of revenue and expenses during the reporting periods. Actual results could differ from those estimates and those differences may be material. These estimates include the determination of credit loss allowance, discount accretion, impairment, fair value, expected end-of-term lease residual values, values of repossessed assets, and income taxes. These estimates, although based on actual historical trends and modeling, may potentially show significant variances over time.
Business Segment Information	Business Segment Information The Company has one reportable segment: Consumer Finance, which includes the Company’s vehicle financial products and services, including retail installment contracts, vehicle leases, and dealer loans, as well as financial products and services related to motorcycles, recreational vehicles, and marine vehicles. It also includes the Company’s personal loan and point-of-sale financing operations.
Recently Adopted Accounting Standards and Recently Issued Accounting Pronouncements	Recently Adopted Accounting Standards Since January 1, 2017, the Company adopted the following Financial Accounting Standards Board (FASB) Accounting Standards Updates (ASUs): • ASU 2016-09, Compensation - Stock Compensation (Topic 718) . This new guidance simplifies certain aspects related to income taxes, the Statement of Cash Flows (SCF), and forfeitures when accounting for share-based payment transactions. ASU 2016-09 eliminates the requirement to recognize excess tax benefits in APIC pools, and instead requires companies to record all excess tax benefits and deficiencies at settlement, vesting or expiration in the income statement as provision for income taxes. At adoption of ASU 2016-09 on January 1, 2017, the cumulative-effect for previously unrecognized excess tax benefits totaled $26,552 net of tax, and was recognized, as an increase, through an adjustment in beginning retained earnings. The Company recorded excess tax deficiency, net of tax of $671 and $430 in the provision for income taxes rather than as an increase to additional paid-in capital for the three and nine months ended September 30, 2017 , respectively, on a prospective basis. Therefore, the prior period presented has not been adjusted. All excess tax benefits along with other income tax cash flows are now being classified as operating activities rather than financing activities in the SCF on a prospective basis. In addition, the Company changed its accounting policy on forfeitures from previously recognizing forfeitures based on estimating the number of awards expected to be forfeited to electing to recognize forfeiture of awards as they occur to simplify the accounting for forfeitures. This resulted in a cumulative adjustment, as a decrease to, beginning retained earnings of $1,439 . • ASU 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships . The new guidance clarifies that a change in the counterparties to a derivative contract, i.e., a novation, in and of itself, does not require the de-designation of a hedging relationship. An entity will, however, still need to evaluate whether it is probable that the counterparty will perform under the contract as part of its ongoing effectiveness assessment for hedge accounting. The adoption of this ASU did not have a material impact on the Company’s financial position, results of operations or cash flows. • ASU 2016-06, Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments. This new guidance clarifies that an exercise contingency does not need to be evaluated to determine whether it relates to interest rates and credit risk in an embedded derivative analysis of hybrid financial instruments. In other words, a contingent put or call option embedded in a debt instrument would be evaluated for possible separate accounting as a derivative instrument without regard to the nature of the exercise contingency. However, as required under existing guidance, companies will still need to evaluate other relevant embedded derivative guidance, such as whether the payoff from the contingent put or call option is adjusted based on changes in an index other than interest rates or credit risk, and whether the debt involves a substantial premium or discount. The adoption of this ASU did not have a material impact on the Company’s financial position, results of operations or cash flows. • ASU 2016-07, Investments-Equity Method and Joint Ventures (Topic 323) . The new guidance eliminates the requirement to apply the equity method of accounting retrospectively when a reporting entity obtains significant influence over a previously held investment. Instead, the equity method of accounting should be applied prospectively from the date significant influence is obtained. Investors should add the cost of acquiring the additional interest in the investee (if any) to the current basis of their previously held interest. The new standard also provides specific guidance for available-for-sale securities that become eligible for the equity method of accounting. In those cases, any unrealized gain or loss recorded within accumulated other comprehensive income should be recognized in earnings at the date the investment initially qualifies for the use of the equity method of accounting. The adoption of this ASU did not have a material impact on the Company’s financial position, results of operations or cash flows. • ASU 2016-17, Consolidation (Topic 810), Interest Held Through Related Parties That Are Under Common Control, which amends the guidance in U.S. GAAP on related parties that are under common control. Specifically, the new ASU requires that a single decision maker consider indirect interests held by related parties under common control on a proportionate basis in a manner consistent with its evaluation of indirect interests held through other related parties. The adoption of this ASU did not have a material impact on the Company’s financial position, results of operations or cash flows. Recently Issued Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) , superseding the revenue recognition requirements in ASC 605. This ASU requires an entity to recognize revenue for the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendment includes a five-step process to assist an entity in achieving the main principle(s) of revenue recognition under ASC 605. In August 2015, the FASB issued ASU 2015-14, which formalized the deferral of the effective date of the amendment for a period of one year from the original effective date. Following the issuance of ASU 2015-14, the amendment will be effective for the Company for the first annual period beginning after December 15, 2017. In March 2016, the FASB also issued ASU 2016-08, an amendment to the guidance in ASU 2014-09, which revises the structure of the indicators to provide indicators of when the entity is the principal or agent in a revenue transaction, and eliminated two of the indicators (“the entity’s consideration is in the form of a commission” and “the entity is not exposed to credit risk”) in making that determination. This amendment also clarifies that each indicator may be more or less relevant to the assessment depending on the terms and conditions of the contract. In April 2016, the FASB issued ASU 2016-10, which clarifies the implementation guidance on identifying promised goods or services and on determining whether an entity’s promise to grant a license with either a right to use the entity’s intellectual property (which is satisfied at a point in time) or a right to access the entity’s intellectual property (which is satisfied over time). In May 2016, the FASB issued ASU 2016-12, an amendment to ASU 2014-09, which provided practical expedients related to disclosures of remaining performance obligations, as well as other amendments to guidance on transition, collectability, non-cash consideration and the presentation of sales and other similar taxes. In December 2016, the FASB issued ASU 2016-20, a separate update for technical corrections and improvements to Topic 606 and other Topics amended by Update 2014-09 to increase stakeholders’ awareness of the proposals and to expedite improvements to Update 2014-09. The amendments, collectively, should be applied retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption. Because ASU 2014-09 does not apply to revenue associated with leases and financial instruments (including loans and securities), the Company does not expect the new guidance to have a material impact on the elements of its Consolidated Statements of Operations most closely associated with leases and financial instruments (such as interest income, interest expense and investment gain). The Company expects to adopt this ASU in the first quarter of 2018 with a cumulative-effect adjustment to opening retained earnings. The Company’s ongoing implementation efforts include the identification of other revenue streams that are within the scope of the new guidance and reviewing related contracts with customers. Upon adoption of this standard, the Company does not expect the impact to be material to its financial position, results of operation or cash flow and expects the impact to be disclosure only. In January 2016, the FASB issued ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . This amendment requires that equity investments, except those accounted for under the equity method of accounting or which result in consolidation of the investee, to be measured at fair value, with changes in the fair value being recorded in net income. However, equity investments that do not have readily determinable fair values will be measured at cost less impairment, if any, plus the effect of changes resulting from observable price transactions in orderly transactions or for the identical or similar investment of the same issuer. The amendment also simplifies the impairment assessment of equity instruments that do not have readily determinable fair values, eliminates the requirement to disclose methods and assumptions used to estimate fair value of instruments measured at their amortized cost on the balance sheet, requires that the disclosed fair values of financial instruments represent "exit price," requires entities to separately present in other comprehensive income the portion of the total change in fair value of a liability resulting from instrument-specific credit risk when the fair value option has been elected for that liability, requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or in the accompanying notes, and clarifies that an entity should evaluate the need for a valuation allowance on its deferred tax asset related to its available-for-sale securities in combination with its other deferred tax assets. This amendment will be effective for the Company for the first reporting period beginning after December 15, 2017, with earlier adoption permitted by public entities on a limited basis. Adoption of the amendment must be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption, except for amendments related to equity instruments that do not have readily determinable fair values, for which it should be applied prospectively. Upon adoption of this standard, the Company does not expect the impact to be material to its financial position, results of operations, cash flows or disclosures. In February 2016, the FASB issued ASU 2016-02, Leases, which will, among other impacts, change the criteria under which leases are identified and accounted for as on- or off-balance sheet. The guidance will be effective for the fiscal year beginning after December 15, 2018, including interim periods within that year. Once effective, the new guidance must be applied for all periods presented. The Company does not expect the new guidance to have a material impact on the Consolidated Statements of Income or the Consolidated Statements of Shareholders' Equity, since the Company recognizes assets and liabilities for all of its vehicle lease transactions. The Company will continue to evaluate the impact of the new guidance on its operating leases primarily for office space and computer equipment. Upon adoption, the Company will gross up its balance sheet by the present value of future minimum lease payments for these operating leases. In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses , which changes the criteria under which credit losses are measured. The amendment introduces a new credit reserving model known as the Current Expected Credit Loss (CECL) model, which replaces the incurred loss impairment methodology in current U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to establish credit loss estimates. The guidance will be effective for the fiscal year beginning after December 15, 2019, including interim periods within that year. The Company does not intend to adopt the new standard early and is currently evaluating the impact the new guidance will have on its financial position, results of operations and cash flows; however, it is expected that the new CECL model will alter the assumptions used in calculating the Company's credit losses, given the change to estimated losses for the estimated life of the financial asset, and will likely result in material changes to the Company’s credit and capital reserves. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments . This update amends the guidance in ASC 230 on the classification of certain cash receipts and payments in the SCF. The ASU’s amendments add or clarify guidance on eight cash flow issues including debt extinguishment costs, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, proceeds from the settlement of corporate-owned life insurance policies, distributions received from equity method investees, beneficial interests in securitization transactions, and separately identifiable cash flows and application of the predominance principle. The guidance will be effective for the fiscal year beginning after December 15, 2017, including interim periods within that year. Early adoption is permitted, including adoption in an interim period, however any adjustments should be reflected as of the beginning of the fiscal year that includes the period of adoption. All of the amended guidance must be adopted in the same period. Upon adoption of this standard, the Company does not expect the impact to be material to its financial position, results of operations or cash flows. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740), Intra-Entity Transfers of Assets Other Than Inventory , which will require an entity to recognize the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. This eliminates the current exception for all intra-entity transfers of an asset other than inventory that requires deferral of the tax effects until the asset is sold to a third party or otherwise recovered through use. The guidance will be effective for the Company for annual reporting periods beginning after December 15, 2017, including interim reporting periods. Early adoption is permitted at the beginning of an annual reporting period for which annual or interim financial statements have not been issued or made available for issuance. Upon adoption of this standard, the Company does not expect the impact to be material to its financial position, results of operation or cash flow. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (A consensus of the FASB Emerging Issues Task Force) , which requires that the statement of cash flows include restricted cash in the beginning and end-of-period total amounts shown on the statement of cash flows and that the statement of cash flows explain changes in restricted cash during the period. The guidance will be effective for the Company for annual periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted, however, adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Company does not expect the adoption of this ASU to have an impact on its financial position, results of operations or cash flows and expects the impact to be disclosure only. In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business . The new guidance revises the definition of a business, potentially affecting areas of accounting such as acquisitions, disposals, goodwill impairment, and consolidation. Under the new guidance, when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the assets acquired (or disposed of) would not represent a business. If this initial screen is met, no further analysis would be required. To be considered a business, an acquisition would have to include an input and a substantive process that together significantly contribute to the ability to create an output. In addition, the amendments narrow the definition of the term “output” so that it is consistent with how outputs are defined in ASC Topic 606, Revenue from Contracts with Customers . This new guidance will be effective for the Company for the first reporting period beginning after December 15, 2017, with earlier adoption permitted. Adoption of the amendments must be applied on a prospective basis. The Company does not expect the adoption of this ASU to have an impact on its financial position, results of operations or cash flows. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill & Other (Topic 350): Simplifying the Accounting for Goodwill Impairment . It removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. The new rules state that a goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance will remain largely unchanged. Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. The same one-step impairment test will be applied to goodwill at all reporting units, even those with zero or negative carrying amounts. Entities will be required to disclose the amount of goodwill at reporting units with zero or negative carrying amounts. The revised guidance will be applied prospectively, and is effective January 1, 2020, with early adoption permitted for any impairment tests performed after January 1, 2017. The Company expects to early adopt this ASU in the fourth quarter of 2017 and does not expect the adoption of this ASU to have an impact on its financial position, results of operations or cash flows and expects the impact to be disclosure only. In May 2017, the FASB issued ASU 2017-09, Compensation - Stock Compensation (Topic 718), Scope of Modification Accounting which clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under the ASU, entities will apply modification accounting guidance if the value, vesting conditions or classification of award changes. The new guidance also clarifies that a modification to an award could be significant and therefore require disclosure, even if modification accounting is not required. The guidance will be applied prospectively to awards modified on or after the adoption date and is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including in an interim period. The Company does not expect the adoption of this ASU to have an impact on its financial position, results of operations or cash flows. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities . The new guidance amends the hedge accounting model to enable entities to better portray their risk management activities in the financial statements. The amendments expand an entity’s ability to hedge nonfinancial and financial risk components and reduce complexity in hedges of interest rate risk. The guidance eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in the fair value of a hedging instrument to be presented in the same income statement line in which the earnings effect of the hedged item is reported. The new guidance is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The Company is in the process of evaluating the impact of the adoption of this ASU.

Finance Receivables (Tables)

Finance Receivables (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Summary of Financing Receivables Held for Investment	Finance receivables held for investment, net is comprised of the following at September 30, 2017 and December 31, 2016 : September 30, December 31, 2016 Retail installment contracts acquired individually (a) $ 22,599,161 $ 23,219,724 Purchased receivables 30,396 158,264 Receivables from dealers 15,902 68,707 Personal loans 5,623 12,272 Capital lease receivables (Note 3) 16,121 22,034 Finance receivables held for investment, net $ 22,667,203 $ 23,481,001 (a) The Company has elected the fair value option for certain retail installment contracts reported in finance receivables held for investment, net. As at September 30, 2017 and December 31, 2016 , $24,799 and $24,495 of loans were recorded at fair value (Note 13). The Company's held for investment portfolio of retail installment contracts acquired individually, receivables from dealers, and personal loans is comprised of the following at September 30, 2017 and December 31, 2016 : September 30, 2017 Retail Installment Contracts Receivables from Personal Loans Non-TDR TDR Unpaid principal balance $ 20,044,330 $ 6,276,659 $ 16,069 $ 9,188 Credit loss allowance - specific — (1,782,114 ) — — Credit loss allowance - collective (1,589,151 ) — (167 ) (3,725 ) Discount (331,179 ) (84,588 ) — (16 ) Capitalized origination costs and fees 59,295 5,909 — 176 Net carrying balance $ 18,183,295 $ 4,415,866 $ 15,902 $ 5,623 December 31, 2016 Retail Installment Contracts Receivables from Personal Loans Non-TDR TDR Unpaid principal balance $ 21,528,406 $ 5,599,567 $ 69,431 $ 19,361 Credit loss allowance - specific — (1,611,295 ) — — Credit loss allowance - collective (1,799,760 ) — (724 ) — Discount (467,757 ) (91,359 ) — (7,721 ) Capitalized origination costs and fees 56,704 5,218 — 632 Net carrying balance $ 19,317,593 $ 3,902,131 $ 68,707 $ 12,272 Purchased receivables portfolios, which were acquired with deteriorated credit quality, is comprised of the following at September 30, 2017 and December 31, 2016 : September 30, December 31, 2016 Outstanding balance $ 49,089 $ 231,360 Outstanding recorded investment, net of impairment 30,646 159,451
Changes in Accretable Yield on Purchased Receivables Portfolios	Changes in accretable yield on the Company’s purchased receivables portfolios for the periods indicated were as follows: For the Three Months Ended For the Nine Months Ended 2017 2016 2017 2016 Balance — beginning of period $ 87,994 $ 137,747 $ 107,041 $ 178,582 Accretion of accretable yield (5,223 ) (17,830 ) (26,670 ) (58,774 ) Disposals/transfers (62,183 ) — (62,183 ) — Reclassifications from (to) nonaccretable difference (a) 1,648 (8,627 ) 4,048 (8,518 ) Balance — end of period $ 22,236 $ 111,290 $ 22,236 $ 111,290 (a) Reclassifications from (to) nonaccretable difference represents the increases (decreases) in accretable yield resulting from higher (lower) estimated undiscounted cash flows.
Schedule of Carrying Values of Finance Receivables Held for Sale	The carrying value of the Company's finance receivables held for sale, net is comprised of the following at September 30, 2017 and December 31, 2016 : September 30, December 31, 2016 Retail installment contracts acquired individually $ 845,910 $ 1,045,815 Personal loans 929,549 1,077,600 Finance receivables held for sale, net $ 1,775,459 $ 2,123,415
Schedule of Sales of Retail Installment Contracts and Charged-off Assets	Sales of retail installment contracts to third parties and proceeds from sales of charged-off assets for the three and nine months ended September 30, 2017 and 2016 were as follows: For the Three Months Ended For the Nine Months Ended 2017 2016 2017 2016 Sales of retail installment contracts to third parties — $ 793,804 260,568 $ 2,312,983 Proceeds from sales of charged-off assets 27,954 12,521 76,746 47,594
Schedule of Servicing of Retail Installment Contracts	Total contracts sold to unrelated third parties and serviced as of September 30, 2017 and December 31, 2016 were as follows: September 30, December 31, 2016 Serviced balance of retail installment contracts and leases sold to third parties $ 6,674,980 $ 10,116,788

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2017
Leases [Abstract]
Summary of Leased Vehicles	Leased vehicles, net, which is comprised of leases originated under the Chrysler Agreement, consisted of the following as of September 30, 2017 and December 31, 2016 : September 30, December 31, Leased vehicles $ 13,831,441 $ 11,939,295 Less: accumulated depreciation (2,830,041 ) (2,326,342 ) Depreciated net capitalized cost 11,001,400 9,612,953 Manufacturer subvention payments, net of accretion (1,098,331 ) (1,066,531 ) Origination fees and other costs 28,214 18,206 Net book value $ 9,931,283 $ 8,564,628
Summary of Minimum Rental Payments under Operating Leases	The following summarizes the future minimum rental payments due to the Company as lessor under operating leases as of September 30, 2017 : Remainder of 2017 $ 474,217 2018 1,497,436 2019 859,498 2020 219,541 2021 4,282 Thereafter — Total $ 3,054,974
Schedule of Capital Lease Receivables	Capital lease receivables, net consisted of the following as of September 30, 2017 and December 31, 2016 : September 30, December 31, Gross investment in capital leases $ 25,725 $ 39,417 Origination fees and other 79 150 Less: unearned income (4,077 ) (7,545 ) Net investment in capital leases before allowance 21,727 32,022 Less: allowance for lease losses (5,606 ) (9,988 ) Net investment in capital leases $ 16,121 $ 22,034
Summary of Future Minimum Lease Payments for Capital Leases	The following summarizes the future minimum lease payments due to the Company as lessor under capital leases as of September 30, 2017 : Remainder of 2017 $ 2,864 2018 11,004 2019 5,907 2020 3,206 2021 1,994 Thereafter 750 Total $ 25,725

Credit Loss Allowance and Cre27

Credit Loss Allowance and Credit Quality (Tables)	9 Months Ended
	Sep. 30, 2017
Loans and Leases Receivable Disclosure [Abstract]
Summary of Activity in Loan Loss Allowance	The activity in the lease loss allowance for capital leases for the three and nine months ended September 30, 2017 and 2016 was as follows: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Balance — beginning of period $ 6,367 $ 12,752 $ 9,988 $ 19,878 Provision for lease losses 432 387 (597 ) (1,669 ) Charge-offs (2,655 ) (5,712 ) (9,415 ) (28,267 ) Recoveries 1,462 3,617 5,630 21,102 Balance — end of period $ 5,606 $ 11,044 $ 5,606 $ 11,044 The activity in the credit loss allowance for individually acquired and dealer loans for the three and nine months ended September 30, 2017 and 2016 was as follows: Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Retail Installment Contracts Acquired Individually Receivables from Dealers Personal Loans Retail Installment Contracts Acquired Individually Receivables from Dealers Balance — beginning of period $ 3,446,968 $ 713 $ 4,362 $ 3,422,736 $ 837 Provision for credit losses 535,427 (546 ) 1,134 609,396 (189 ) Charge-offs (a) (1,206,059 ) — (1,976 ) (1,246,760 ) — Recoveries 594,929 — 205 615,913 — Balance — end of period $ 3,371,265 $ 167 $ 3,725 $ 3,401,285 $ 648 (a) For the three months ended September 30, 2017, charge-offs for retail installment contracts acquired individually includes approximately $18 million for the partial write-down of loans to the collateral value less estimated costs to sell, for which a bankruptcy notice was received. No such charge-offs were recorded for the three months ended September 30, 2016. Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 Retail Installment Contracts Acquired Individually Receivables from Dealers Personal Loans Retail Installment Contracts Acquired Individually Receivables from Dealers Balance — beginning of period $ 3,411,055 $ 724 $ — $ 3,197,414 $ 916 Provision for credit losses 1,682,894 (557 ) 10,275 1,787,277 (133 ) Charge-offs (a) (3,542,471 ) — (7,194 ) (3,429,905 ) (135 ) Recoveries 1,819,787 — 644 1,846,499 — Balance — end of period $ 3,371,265 $ 167 $ 3,725 $ 3,401,285 $ 648 (a) For the nine months ended September 30, 2017, charge-offs for retail installment contracts acquired individually includes approximately $66 million for the partial write-down of loans to the collateral value less estimated costs to sell, for which a bankruptcy notice was received. No such charge-offs were recorded for the nine months ended September 30, 2016.
Summary of Impairment Activity Related to Purchased Receivables Portfolios	The impairment activity related to purchased receivables portfolios for the three and nine months ended September 30, 2017 and 2016 was as follows: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Balance — beginning of period $ 169,323 $ 168,518 $ 169,323 $ 172,308 Incremental provisions for purchased receivable portfolios — — — — Incremental reversal of provisions for purchased receivable portfolios — 804 — (2,986 ) Balance — end of period $ 169,323 $ 169,322 $ 169,323 $ 169,322
Summary of Delinquencies	As of September 30, 2017 and December 31, 2016 , a summary of delinquencies on retail installment contracts held for investment portfolio is as follows: September 30, 2017 Retail Installment Contracts Held for Investment Loans Acquired Individually Purchased Receivables Portfolios Total Principal, 30-59 days past due $ 2,574,165 $ 6,061 $ 2,580,226 Delinquent principal over 59 days (a) 1,460,793 3,750 1,464,543 Total delinquent principal $ 4,034,958 $ 9,811 $ 4,044,769 December 31, 2016 Retail Installment Contracts Held for Investment Loans Acquired Individually Purchased Receivables Portfolios Total Principal, 30-59 days past due $ 2,911,800 $ 13,703 $ 2,925,503 Delinquent principal over 59 days (a) 1,520,105 6,638 1,526,743 Total delinquent principal $ 4,431,905 $ 20,341 $ 4,452,246 (a) Interest is accrued until 60 days past due in accordance with the Company's accounting policy for retail installment contracts. The Company's delinquency ratio continues to be calculated using the end of period delinquent principal over 60 days.
Summary of Credit Risk Profile	A summary of the credit risk profile of the Company’s retail installment contracts held for investment by FICO ® distribution, determined at origination, as of September 30, 2017 and December 31, 2016 was as follows: FICO ® Band September 30, 2017 December 31, 2016 Commercial (a) 2.4% 3.1% No-FICOs 11.6% 12.2% <540 22.4% 22.1% 540-599 32.4% 31.4% 600-639 17.5% 17.4% >640 13.7% 13.8% (a) FICO scores are not obtained on loans to commercial borrowers.
Summary Commercial Loan Credit Quality Indicators	Fleet loan credit quality indicators for retail installment contracts held for investment with commercial borrowers as of September 30, 2017 and December 31, 2016 were as follows: September 30, December 31, Pass $ 13,482 $ 17,585 Special Mention 5,688 2,790 Substandard 808 1,488 Doubtful — — Loss — — Total $ 19,978 $ 21,863 Commercial loan credit quality indicators for receivables from dealers held for investment as of September 30, 2017 and December 31, 2016 were as follows: September 30, December 31, Pass $ 14,340 $ 67,681 Special Mention 117 — Substandard 1,613 1,750 Doubtful — — Loss — — Unpaid principal balance $ 16,069 $ 69,431
Summary of TDRs	The table below presents the Company’s TDRs as of September 30, 2017 and December 31, 2016 : September 30, December 31, 2016 Retail Installment Contracts Outstanding recorded investment (a) $ 6,330,331 $ 5,637,792 Impairment (1,782,114 ) (1,611,295 ) Outstanding recorded investment, net of impairment $ 4,548,217 $ 4,026,497 (a) As of September 30, 2017 , the outstanding recorded investment excludes $50.7 million of collateral-dependent bankruptcy TDRs that has been written down by $23.7 million to fair value less cost to sell.
Summary of Delinquent TDRs	A summary of the Company’s delinquent TDRs at September 30, 2017 and December 31, 2016 , is as follows: September 30, December 31, 2016 Retail Installment Contracts Principal, 30-59 days past due $ 1,184,804 $ 1,253,848 Delinquent principal over 59 days 753,606 736,691 Total delinquent TDR principal $ 1,938,410 $ 1,990,539 (a) The balances in the above table reflects total unpaid principal balance rather than net recorded investment before allowance.
Average Recorded Investment and Income Recognized on TDR Loans	Average recorded investment and income recognized on TDR loans are as follows: Three Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Average outstanding recorded investment in TDRs $ 6,143,345 $ 5,213,132 Interest income recognized $ 225,871 $ 207,115 Nine Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Average outstanding recorded investment in TDRs $ 5,929,146 $ 4,940,280 Interest income recognized $ 711,033 $ 576,682
Summary of Financial Effects of TDRs	The following table summarizes the financial effects of TDRs that occurred during the three and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Outstanding recorded investment before TDR $ 1,123,080 $ 929,871 Outstanding recorded investment after TDR $ 1,122,450 $ 932,472 Number of contracts (not in thousands) 66,001 52,780 Nine Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Outstanding recorded investment before TDR $ 2,778,407 $ 2,463,409 Outstanding recorded investment after TDR $ 2,776,006 $ 2,478,035 Number of contracts (not in thousands) 160,098 139,524
Summary of Loan Restructuring Accounted for as TDRs	Loan restructurings accounted for as TDRs within the previous twelve months that subsequently defaulted during the three and nine months ended September 30, 2017 and 2016 are summarized in the following table: Three Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Recorded investment in TDRs that subsequently defaulted (a) $ 197,953 $ 206,247 Number of contracts (not in thousands) 11,219 11,745 Nine Months Ended September 30, 2017 September 30, 2016 Retail Installment Contracts Recorded investment in TDRs that subsequently defaulted (a) $ 600,117 $ 565,724 Number of contracts (not in thousands) 33,735 32,256 (a) For TDR modifications and TDR modifications that subsequently defaults, the allowance methodology remains unchanged.

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of Credit Facilities	The following table presents information regarding credit facilities as of September 30, 2017 and December 31, 2016 : September 30, 2017 Maturity Date(s) Utilized Balance Committed Amount Effective Rate Assets Pledged Restricted Cash Pledged Facilities with third parties: Warehouse line January 2018 $ 181,083 $ 500,000 2.96% $ 276,519 $ — Warehouse line Various (a) 258,545 1,250,000 1.21% 387,668 11,554 Warehouse line (b) August 2018 — 780,000 1.39% 2,329 121 Warehouse line (c) August 2018 2,766,543 3,120,000 2.22% 3,724,088 61,367 Warehouse line October 2018 445,277 1,800,000 3.45% 661,090 12,644 Repurchase facility (d) December 2017 254,120 254,120 3.35% — 13,708 Repurchase facility (d) April 2018 202,311 202,311 2.62% — — Repurchase facility (d) March 2018 148,690 148,690 3.88% — — Repurchase facility (d) November 2017 53,335 53,335 2.43% — — Warehouse line November 2018 274,499 1,000,000 3.44% 401,219 7,920 Warehouse line October 2018 87,965 400,000 3.72% 132,197 2,852 Warehouse line November 2018 57,820 500,000 4.54% 63,712 2,215 Warehouse line (e) October 2017 235,700 300,000 2.67% 276,521 9,278 Total facilities with third parties 4,965,888 10,308,456 5,925,343 121,659 Facilities with Santander and related subsidiaries (f,g): Line of credit December 2017 — 1,000,000 3.04% — — Line of credit December 2018 — 1,000,000 3.09% — — Promissory Note March 2019 300,000 300,000 2.45% — — Promissory Note May 2020 500,000 500,000 3.49% — — Promissory Note (h) March 2022 650,000 650,000 4.20% — — Promissory Note August 2021 650,000 650,000 3.44% — — Line of credit December 2018 265,400 750,000 3.77% — — Line of credit March 2019 — 3,000,000 3.94% — — Total facilities with Santander and related subsidiaries 2,365,400 7,850,000 — — Total revolving credit facilities $ 7,331,288 $ 18,158,456 $ 5,925,343 $ 121,659 (a) Half of the outstanding balance on this facility matures in March 2018 and half matures in March 2019. (b) This line is held exclusively for financing of Chrysler Capital loans. (c) This line is held exclusively for financing of Chrysler Capital leases. (d) These repurchase facilities are collateralized by securitization notes payable retained by the Company. These facilities have rolling maturities of up to one year . (e) In October 2017, the warehouse line that matured was extended to December 2017. (f) The lines of credit generally are also collateralized by securitization notes payable and residuals retained by the Company. As of September 30, 2017 and December 31, 2016 , zero and $1,316,568 , respectively, of the aggregate outstanding balances on these facilities were unsecured. (g) In October 2017, the Company executed a $400 million promissory note with SHUSA. The promissory note matures October 10, 2020. (h) The Company entered into an interest rate swap to hedge the interest rate risk on this fixed rate debt. During the three months ended September 30, 2017, the Company terminated the fair value hedge. At the time of termination, the fair value hedge adjustment was $4.5 million , the amortization of which will reduce interest expense over the remaining life of the fixed rate debt. December 31, 2016 Maturity Date(s) Utilized Balance Committed Amount Effective Rate Assets Pledged Restricted Cash Pledged Facilities with third parties: Warehouse line January 2018 $ 153,784 $ 500,000 3.17% $ 213,578 $ — Warehouse line Various 462,085 1,250,000 2.52% 653,014 14,916 Warehouse line August 2018 534,220 780,000 1.98% 608,025 24,520 Warehouse line August 2018 3,119,943 3,120,000 1.91% 4,700,774 70,991 Warehouse line October 2018 702,377 1,800,000 2.51% 994,684 23,378 Repurchase facility December 2017 507,800 507,800 2.83% — 22,613 Repurchase facility April 2017 235,509 235,509 2.04% — — Warehouse line November 2018 578,999 1,000,000 1.56% 850,758 17,642 Warehouse line October 2018 202,000 400,000 2.22% 290,867 5,435 Warehouse line November 2018 — 500,000 2.07% — — Warehouse line October 2017 243,100 300,000 2.38% 295,045 9,235 Total facilities with third parties 6,739,817 10,393,309 8,606,745 188,730 Facilities with Santander and related subsidiaries: Line of credit December 2017 500,000 500,000 3.04% — — Line of credit December 2018 175,000 500,000 3.87% — — Line of credit December 2017 1,000,000 1,000,000 2.86% — — Line of credit December 2018 1,000,000 1,000,000 2.88% — — Line of credit March 2017 300,000 300,000 2.25% — — Line of credit March 2019 — 3,000,000 3.74% — — Total facilities with Santander and related subsidiaries 2,975,000 6,300,000 — — Total revolving credit facilities $ 9,714,817 $ 16,693,309 $ 8,606,745 $ 188,730
Summary of Secured Structured Financings	The following table presents information regarding secured structured financings as of September 30, 2017 and December 31, 2016 : September 30, 2017 Original Estimated Maturity Date(s) Balance Initial Note Amounts Issued Initial Weighted Average Interest Rate Collateral (b) Restricted Cash 2013 Securitizations April 2019 - March 2021 $ 612,494 $ 5,439,700 0.90% - 1.59% $ 797,901 $ 166,215 2014 Securitizations February 2020 - April 2022 1,340,311 6,391,020 1.16% - 1.72% 1,584,279 220,843 2015 Securitizations April 2020- January 2023 2,821,425 9,185,032 1.33% - 2.29% 3,964,228 387,272 2016 Securitizations April 2022 - March 2024 4,087,267 7,462,790 1.63% - 2.80% 5,425,003 366,363 2017 Securitizations April 2023 - Sept 2024 6,066,240 7,391,890 1.35% - 2.52% 7,853,934 346,534 Public securitizations (a) 14,927,737 35,870,432 19,625,345 1,487,227 2011 Private issuances December 2018 360,029 1,700,000 1.46% 475,937 23,648 2013 Private issuances September 2018 2,379,762 2,044,054 1.28% - 1.38% 3,716,406 153,499 2014 Private issuances March 2018 -November 2021 159,957 1,530,125 1.05% - 1.40% 274,552 11,055 2015 Private issuances December 2016 - July 2019 2,223,017 2,305,062 0.88% - 2.81% 1,137,412 52,172 2016 Private issuances May 2020 - September 2024 1,720,933 3,050,000 1.55% - 2.86% 2,441,657 89,456 2017 Private issuances April 2021 - September 2021 1,486,928 1,600,000 1.85% - 2.44% 1,877,131 41,287 Privately issued amortizing notes 8,330,626 12,229,241 9,923,095 371,117 Total secured structured financings $ 23,258,363 $ 48,099,673 $ 29,548,440 $ 1,858,344 (a) Secured structured financings executed under Rule 144A of the Securities Act are included within this balance. (b) Secured structured financings may be collateralized by the Company's collateral overages of other issuances. December 31, 2016 Original Estimated Maturity Date(s) Balance Initial Note Amounts Issued Initial Weighted Average Interest Rate Collateral Restricted Cash 2012 Securitizations September 2018 $ 197,470 $ 2,525,540 0.92%-1.23% $ 312,710 $ 73,733 2013 Securitizations January 2019 - January 2021 1,172,904 6,689,700 0.89%-1.59% 1,484,014 222,187 2014 Securitizations February 2020 - January 2021 1,858,600 6,391,020 1.16%-1.72% 2,360,939 250,806 2015 Securitizations September 2019 - January 2023 4,326,292 9,317,032 1.33%-2.29% 5,743,884 468,787 2016 Securitizations April 2022 - March 2024 5,881,216 7,462,790 1.63%-2.46% 7,572,977 408,086 Securitizations 13,436,482 32,386,082 17,474,524 1,423,599 2010 Private issuances June 2011 113,157 516,000 1.29% 213,235 6,270 2011 Private issuances December 2018 342,369 1,700,000 1.46% 617,945 31,425 2013 Private issuances September 2018-September 2020 2,375,964 2,693,754 1.13%-1.38% 4,122,963 164,740 2014 Private issuances March 2018 - December 2021 643,428 3,271,175 1.05%-1.40% 1,129,506 68,072 2015 Private issuances December 2016 - July 2019 2,185,166 2,855,062 0.88%-2.81% 2,384,661 140,269 2016 Securitizations May 2020 - September 2024 2,512,323 3,050,000 1.55%-2.86% 3,553,577 90,092 Privately issued amortizing notes 8,172,407 14,085,991 12,021,887 500,868 Total secured structured financings $ 21,608,889 $ 46,472,073 $ 29,496,411 $ 1,924,467

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2017
Variable Interest Entity Disclosure [Abstract]
Summary of Cash Flows Received from Consolidated Securitization Trusts	A summary of the cash flows received from consolidated securitization trusts during the three and nine months ended September 30, 2017 and 2016 , is as follows: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Assets securitized $ 2,998,430 $ 2,043,114 $ 15,395,158 $ 12,026,706 Net proceeds from new securitizations (a) $ 2,936,719 $ 1,688,822 $ 11,998,611 $ 9,509,135 Net proceeds from sale of retained bonds — — 273,733 128,798 Cash received for servicing fees (b) 228,131 200,634 653,048 595,070 Net distributions from Trusts (b) 666,179 776,306 2,073,965 2,167,512 Total cash received from Trusts $ 3,831,029 $ 2,665,762 $ 14,999,357 $ 12,400,515 (a) Includes additional advances on existing securitizations. (b) These amounts are not reflected in the accompanying condensed consolidated statements of cash flows because these cash flows are intra-company and eliminated in consolidation. A summary of the cash flows received from off-balance sheet securitization trusts during the three and nine months ended September 30, 2017 and 2016 is as follows: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Receivables securitized (a) $ 1,347,010 $ — $ 2,583,341 $ — Net proceeds from new securitizations $ 1,347,430 $ — $ 2,588,227 $ — Cash received for servicing fees 12,309 10,027 25,677 38,885 Total cash received from securitization trusts $ 1,359,739 $ 10,027 $ 2,613,904 $ 38,885 (a) Represents the unpaid principal balance at the time of original securitization.
Off-balance Sheet Variable Interest Entities Portfolio	The portfolio was comprised as follows: September 30, 2017 December 31, 2016 SPAIN $ 2,265,206 $ — Total serviced for related parties 2,265,206 — Chrysler Capital securitizations 1,690,729 2,472,756 Other third parties — 268,345 Total serviced for third parties 1,690,729 2,741,101 Total serviced for others portfolio $ 3,955,935 $ 2,741,101

Derivative Financial Instrume30

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Underlying Notional Amounts and Aggregate Fair Values	The underlying notional amounts and aggregate fair values of these derivatives financial instruments at September 30, 2017 and December 31, 2016 , are as follows: September 30, 2017 Notional Fair Value Asset Liability Interest rate swap agreements designated as cash flow hedges $ 4,978,500 $ 39,986 $ 39,986 $ — Interest rate swap agreements not designated as hedges 1,493,800 8,801 8,801 — Interest rate cap agreements 11,900,578 90,313 116,568 (26,255 ) Options for interest rate cap agreements 11,900,578 (90,259 ) 26,304 (116,563 ) December 31, 2016 Notional Fair Value Asset Liability Interest rate swap agreements designated as cash flow hedges $ 7,854,700 $ 44,618 $ 45,551 $ (933 ) Interest rate swap agreements not designated as hedges 1,019,900 1,939 2,076 (137 ) Interest rate cap agreements 9,463,935 76,269 76,269 — Options for interest rate cap agreements 9,463,935 (76,281 ) — (76,281 ) Total return settlement 658,471 (30,618 ) — (30,618 )
Schedule of Offsetting Financial Assets	Gross Amounts Not Offset in the Assets Presented Cash Net September 30, 2017 Interest rate swaps - Santander and affiliates $ 6,042 $ (336 ) $ 5,706 Interest rate swaps - third party 42,745 (27,146 ) 15,599 Interest rate caps - Santander and affiliates 5,053 (5,053 ) — Interest rate caps - third party 111,515 (78,896 ) 32,619 Back to back - Santander & affiliates $ 9,775 — $ 9,775 Back to back - third party $ 16,529 — $ 16,529 Total derivatives subject to a master netting arrangement or similar arrangement 191,659 (111,431 ) 80,228 Total derivatives not subject to a master netting arrangement or similar arrangement — — — Total derivative assets $ 191,659 $ (111,431 ) $ 80,228 Total financial assets $ 191,659 $ (111,431 ) $ 80,228 December 31, 2016 Interest rate swaps - Santander and affiliates $ 5,372 $ — $ 5,372 Interest rate swaps - third party 42,254 (22,100 ) 20,154 Interest rate caps - Santander and affiliates 7,593 — 7,593 Interest rate caps - third party 68,676 — 68,676 Total derivatives subject to a master netting arrangement or similar arrangement 123,895 (22,100 ) 101,795 Total derivatives not subject to a master netting arrangement or similar arrangement — — — Total derivative assets $ 123,895 $ (22,100 ) $ 101,795 Total financial assets $ 123,895 $ (22,100 ) $ 101,795 (a) Cash collateral received is reported in Other liabilities or Due to affiliate, as applicable, in the condensed consolidated balance sheet.
Schedule of Offsetting Financial Liabilities	Gross Amounts Not Offset in the Liabilities Presented Cash Net September 30, 2017 Interest rate swaps - Santander & affiliates $ — $ — $ — Interest rate swaps - third party — — — Interest rate caps - Santander and affiliates 9,775 — 9,775 Interest rate caps - third party 16,480 $ (372 ) 16,108 Back to back - Santander & affiliates 5,053 (5,053 ) — Back to back - third party 111,510 (46,650 ) 64,860 Total derivatives subject to a master netting arrangement or similar arrangement 142,818 (52,075 ) 90,743 Total derivatives not subject to a master netting arrangement or similar arrangement — — — Total derivative liabilities $ 142,818 $ (52,075 ) $ 90,743 Total financial liabilities $ 142,818 $ (52,075 ) $ 90,743 December 31, 2016 Interest rate swaps - Santander & affiliates $ 546 $ (546 ) $ — Interest rate swaps - third party 524 (524 ) — Back to back - Santander & affiliates 7,593 (7,593 ) — Back to back - third party 68,688 (68,688 ) — Total derivatives subject to a master netting arrangement or similar arrangement 77,351 (77,351 ) — Total return settlement 30,618 — 30,618 Total derivatives not subject to a master netting arrangement or similar arrangement 30,618 — 30,618 Total derivative liabilities $ 107,969 $ (77,351 ) $ 30,618 Total financial liabilities $ 107,969 $ (77,351 ) $ 30,618 (a) Cash collateral pledged is reported in Other assets or Due from affiliate, as applicable, in the condensed consolidated balance sheet. In certain instances, the Company is over-collateralized since the actual amount of cash pledged as collateral exceeds the associated financial liability. As a result, the actual amount of cash collateral pledged that is reported in Other assets or Due from affiliates may be greater than the amount shown in the table above.
Gross Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss)	The impacts on the condensed consolidated statements of income and comprehensive income for the three and nine months ended September 30, 2017 and 2016 were as follows: Three Months Ended September 30, 2017 Recognized in Earnings Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Interest rate swap agreements designated as cash flow hedges $ (2,061 ) $ (882 ) $ 1,461 Interest rate swap agreements designated as fair value hedges (1,232 ) — — Total $ (3,293 ) $ (882 ) $ 1,461 Derivative instruments not designated as hedges: Gains (losses) recognized in interest expense $ 90 Gains (losses) recognized in operating expenses $ (2,723 ) Three Months Ended September 30, 2016 Recognized in Earnings Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Interest rate swap agreements designated as cash flow hedges $ 293 $ 27,764 $ (10,799 ) Derivative instruments not designated as hedges: Gains (losses) recognized in interest expense $ (3,769 ) Gains (losses) recognized in operating expenses $ 343 Nine Months Ended September 30, 2017 Recognized in Earnings Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Interest rate swap agreements designated as cash flow hedges $ (11,573 ) $ 4,233 $ (3,158 ) Derivative instruments not designated as hedges: Gains (losses) recognized in interest expense $ 90 Gains (losses) recognized in operating expenses $ (2,297 ) Nine Months Ended September 30, 2016 Recognized in Earnings Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss) Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Interest rate swap agreements designated as cash flow hedges $ 528 $ (81,247 ) $ (35,442 ) Derivative instruments not designated as hedges: Gains (losses) recognized in interest expense $ 2,428 Gains (losses) recognized in operating expenses $ (2,337 )

Other Assets (Tables)

Other Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Assets	Other assets were comprised as follows: September 30, December 31, Vehicles (a) $ 206,076 $ 257,382 Manufacturer subvention payments receivable (b) 102,383 161,447 Upfront fee (b) 83,750 95,000 Derivative assets at fair value (c) 170,789 110,930 Derivative - third party collateral 120,711 75,089 Prepaids 41,324 46,177 Accounts receivable 28,758 22,480 Other 32,469 16,905 Other assets $ 786,260 $ 785,410 (a) Includes vehicles obtained through repossession as well as vehicles obtained due to lease terminations. (b) These amounts relate to the Chrysler Agreement. The Company paid a $150,000 upfront fee upon the May 2013 inception of the agreement. The fee is being amortized into finance and other interest income over a ten -year term. As the preferred financing provider for FCA, the Company is entitled to subvention payments on loans and leases with below-market customer payments. (c) Derivative assets at fair value represent the gross amount of derivatives presented in the condensed consolidated financial statements. Refer to Note 7 to these Condensed Consolidated Financial Statements for the detail of these amounts.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Summary of Liabilities for Commitments and Contingencies	The following table summarizes liabilities recorded for commitments and contingencies as of September 30, 2017 and December 31, 2016 , all of which are included in accounts payable and accrued expenses in the accompanying condensed consolidated balance sheets: Agreement or Legal Matter Commitment or Contingency September 30, 2017 December 31, 2016 Chrysler Agreement Revenue-sharing and gain-sharing payments $ 13,270 $ 10,134 Agreement with Bank of America Servicer performance fee 8,066 9,797 Agreement with CBP Loss-sharing payments 4,874 4,563 Other Contingencies Consumer arrangements 8,637 — Legal and regulatory proceedings Aggregate legal and regulatory liabilities 17,800 39,200
Schedule of Future Minimum Rental Payments for Operating Leases	The remaining obligations under lease commitments at September 30, 2017 are as follows: Years ended December 31, 2017 $ 2,992 2018 12,645 2019 12,773 2020 13,035 2021 12,910 Thereafter 56,794 Total $ 111,149

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2017
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	Interest expense, including unused fees, for affiliate lines/letters of credit for the three and nine months ended September 30, 2017 and 2016 , was as follows: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Line of credit agreement with Santander - New York Branch (Note 5) $ 8,158 $ 16,404 $ 46,624 $ 52,800 Debt facilities with SHUSA (Note 5) 26,211 6,023 59,105 14,892 Accrued interest for affiliate lines/letters of credit at September 30, 2017 and December 31, 2016 , was as follows: September 30, December 31, 2016 Line of credit agreement with Santander - New York Branch (Note 5) $ 1,409 $ 6,297 Debt facilities with SHUSA (Note 5) 15,192 1,737 Other information on the serviced receivables for SBNA as of September 30, 2017 is as follows: September 30, Total serviced portfolio $ 129,727 Cash collections due to owner 273 Servicing fees receivable 110 Other information on the consumer vehicle lease portfolio serviced for SBNA as of September 30, 2017 and December 31, 2016 is as follows: September 30, December 31, Total serviced portfolio $ 459,524 $ 1,297,317 Cash collections due to owner — 78 Origination and servicing fees receivable 2,020 926 Revenue share reimbursement receivable 3,365 612 Other information on the serviced auto loan and retail installment contract portfolios for SBNA as of September 30, 2017 and December 31, 2016 is as follows: September 30, December 31, Total serviced portfolio $ 427,168 $ 531,117 Cash collections due to owner 13,425 21,427 Servicing fees receivable 983 1,123

Computation of Basic and Dilu34

Computation of Basic and Diluted Earnings per Common Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Summary of Computation of Basic and Diluted Earnings per Common Share	The following table represents EPS numbers for the three and nine months ended September 30, 2017 and 2016 : Three Months Ended Nine Months Ended 2017 2016 2017 2016 Earnings per common share Net income $ 199,388 $ 213,547 $ 607,490 $ 705,191 Weighted average number of common shares outstanding before restricted participating shares (in thousands) 359,496 357,994 359,274 357,830 Weighted average number of participating restricted common shares outstanding (in thousands) 123 350 123 350 Weighted average number of common shares outstanding (in thousands) 359,619 358,344 359,397 358,180 Earnings per common share $ 0.55 $ 0.60 $ 1.69 $ 1.97 Earnings per common share - assuming dilution Net income $ 199,388 $ 213,547 $ 607,490 $ 705,191 Weighted average number of common shares outstanding (in thousands) 359,619 358,344 359,397 358,180 Effect of employee stock-based awards (in thousands) 841 1,743 672 1,455 Weighted average number of common shares outstanding - assuming dilution (in thousands) 360,460 360,088 360,069 359,635 Earnings per common share - assuming dilution $ 0.55 $ 0.59 $ 1.69 $ 1.96

Fair Value of Financial Instr35

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Summary of Fair Value Estimates, Methods and Assumptions	The following tables present the carrying value and estimated fair value of the Company’s financial assets and liabilities disclosed, but not carried, at fair value at September 30, 2017 and December 31, 2016 , and the level within the fair value hierarchy: September 30, 2017 Carrying Estimated Level 1 Level 2 Level 3 Assets: Cash and cash equivalents (a) $ 397,311 $ 397,311 $ 397,311 $ — $ — Finance receivables held for investment, net (b) 22,540,414 23,590,105 — — 23,590,105 Restricted cash (a) 2,559,246 2,559,246 2,559,246 — — Total $ 25,496,971 $ 26,546,662 $ 2,956,557 $ — $ 23,590,105 Liabilities: Notes payable — credit facilities (c) $ 4,965,888 $ 4,965,888 $ — $ — $ 4,965,888 Notes payable — secured structured financings (d) 23,258,363 23,541,974 — 13,889,699 9,652,275 Notes payable — related party (e) 2,369,850 2,369,850 — — 2,369,850 Total $ 30,594,101 $ 30,877,712 $ — $ 13,889,699 $ 16,988,013 December 31, 2016 Carrying Estimated Level 1 Level 2 Level 3 Assets: Cash and cash equivalents (a) $ 160,180 $ 160,180 $ 160,180 $ — $ — Finance receivables held for investment, net (b) 23,456,506 24,630,599 — — 24,630,599 Restricted cash (a) 2,757,299 2,757,299 2,757,299 — — Total $ 26,373,985 $ 27,548,078 $ 2,917,479 $ — $ 24,630,599 Liabilities: Notes payable — credit facilities (c) $ 6,739,817 $ 6,739,817 $ — $ — $ 6,739,817 Notes payable — secured structured financings (d) 21,608,889 21,712,691 — 13,530,045 8,182,646 Notes payable — related party (e) 2,975,000 2,975,000 — — 2,975,000 Total $ 31,323,706 $ 31,427,508 $ — $ 13,530,045 $ 17,897,463 (a) Cash and cash equivalents and restricted cash — The carrying amount of cash and cash equivalents, including restricted cash, is at an approximated fair value as the instruments mature within 90 days or less and bear interest at market rates. (b) Finance receivables held for investment, net — Finance receivables held for investment, net are carried at amortized cost, net of an allowance. The estimated fair value for the underlying financial instruments are determined as follows: • Retail installment contracts held for investment, net — The estimated fair value is calculated based on a DCF in which the Company uses significant unobservable inputs on key assumptions, including historical default rates and adjustments to reflect prepayment rates, expected recovery rates, discount rates reflective of the cost of funding, and credit loss expectations. • Receivables from dealers held for investment and Capital lease receivables, net — Receivables from dealers held for investment are carried at amortized cost, net of credit loss allowance. Capital lease receivables are carried at gross investment, net of unearned income and allowance for lease losses. Management believes that the terms of these credit agreements approximate market terms for similar credit agreements. (c) Notes payable — credit facilities — The carrying amount of notes payable related to revolving credit facilities is estimated to approximate fair value. Management believes that the terms of these credit agreements approximate market terms for similar credit agreements as the facilities are subject to short-term floating interest rates that approximate rates available to the Company. (d) Notes payable — secured structured financings — The estimated fair value of notes payable related to secured structured financings is calculated based on market observable prices and spreads for the Company's publicly traded debt and market observed prices of similar notes issued by the Company, or recent market transactions involving similar debt with similar credit risks, which are considered level 2 inputs. The estimated fair value of notes payable related to privately issued amortizing notes is calculated based on a combination of discounted cash flow analysis and market observable spreads for similar liabilities in which the Company uses significant unobservable inputs on key assumptions, including historical default rates and adjustments to reflect prepayment rates, discount rates reflective of the cost of funding, and credit loss expectations, which are considered level 3 inputs. (e) Notes payable — related party — The carrying amount of notes payable to a related party is estimated to approximate fair value as the facilities are subject to short-term floating interest rates that approximate rates available to the Company.
Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following tables present the Company’s assets and liabilities that are measured at fair value on a recurring basis at September 30, 2017 and December 31, 2016 , and the level within the fair value hierarchy: Fair Value Measurements at September 30, 2017 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other assets — trading interest rate caps (a) $ 111,515 $ — $ 111,515 $ — Due from affiliates — trading interest rate caps (a) 5,053 — 5,053 — Other assets — cash flow hedging interest rate swaps (a) 35,381 — 35,381 — Due from affiliates — cash flow hedging interest rate swaps (a) 4,605 — 4,605 — Other assets — trading interest rate swaps (a) 7,364 — 7,364 — Due from affiliates — trading interest rate swaps (a) 1,437 — 1,437 — Other assets — trading options for interest rate caps (a) 16,529 — 16,529 — Due from affiliates — trading options for interest rate caps (a) 9,775 — 9,775 — Other liabilities — trading options for interest rate caps (a) 111,510 — 111,510 — Due to affiliates — trading options for interest rate caps (a) 5,053 — 5,053 — Other liabilities — trading interest rate caps (a) 16,480 — 16,480 — Due to affiliates — trading interest rate caps (a) 9,775 — 9,775 — Retail installment contracts acquired individually (c) 24,799 — — 24,799 Fair Value Measurements at December 31, 2016 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other assets — trading interest rate caps (a) $ 68,676 $ — $ 68,676 $ — Due from affiliates — trading interest rate caps (a) 7,593 — 7,593 — Other assets — cash flow hedging interest rate swaps (a) 41,471 — 41,471 — Due from affiliates — cash flow hedging interest rate swaps (a) 4,080 — 4,080 — Other assets — trading interest rate swaps (a) 783 — 783 — Due from affiliates — trading interest rate swaps (a) 1,292 — 1,292 — Other liabilities — trading options for interest rate caps (a) 68,688 — 68,688 — Due to affiliates — trading options for interest rate caps (a) 7,593 — 7,593 — Other liabilities — cash flow hedging interest rate swaps (a) 482 — 482 — Due to affiliates — cash flow hedging interest rate swaps (a) 451 — 451 — Other liabilities — trading interest rate swaps (a) 42 — 42 — Due to affiliates — trading interest rate swaps (a) 95 — 95 — Other liabilities — total return settlement (a,b) 30,618 — — 30,618 Retail installment contracts acquired individually (c) 24,495 — — 24,495 (a) The valuation is determined using widely accepted valuation techniques including a DCF on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivative, including the period to maturity, and uses observable market-based inputs. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurement of its derivatives. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings and guarantees. The Company utilizes the exception in ASC 820-10-35-18D (commonly referred to as the “portfolio exception”) with respect to measuring counterparty credit risk for instruments (Note 7). (b) The significant unobservable inputs for total return settlement derivative contracts used in the fair value measurement of the Company's liabilities are discount percentages, which are based on comparable financial instruments. (c) For certain retail installment contracts reported in finance receivables held for investment, net, the Company has elected the fair value option. The fair values of the retail installment contracts are estimated using a DCF model. When estimating the fair value using this model, the Company uses significant unobservable inputs on key assumptions, which includes historical default rates and adjustments to reflect prepayment rates based on available data from a comparable market securitization of similar assets, discount rates reflective of the cost of funding of debt issuance and recent historical equity yields, and recovery rates based on the average severity utilizing reported severity rates and loss severity utilizing available market data from a comparable securitized pool. Accordingly, retail installment contracts held for investment are classified as Level 3. Changes in the fair value are recorded in investment gains (losses), net in the condensed consolidated statement of income.
Changes in Level 3 Balances, Assets	The following table presents the changes in retail installment contracts held for investment balances classified as Level 3 balances for the three and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Balance — beginning of period $ 30,489 $ 12,602 $ 24,495 $ 6,770 Additions / issuances — 11,838 19,727 23,712 Net collection activities (6,517 ) (5,740 ) (23,640 ) (11,782 ) Gains recognized in earnings 827 — 4,217 — Balance — end of period $ 24,799 $ 18,700 $ 24,799 $ 18,700
Change in Level 3 Balances, Liabilities	The following table presents the changes in the total return settlement balance, which is classified as Level 3, for the three and nine months ended September 30, 2017 and 2016 : Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Balance — beginning of period $ 31,123 $ 53,543 $ 30,618 $ 53,432 (Gains)/losses recognized in earnings — (343 ) 505 2,337 Settlements (31,123 ) (23,336 ) (31,123 ) (25,905 ) Balance — end of period $ — $ 29,864 $ — $ 29,864
Assets and Liabilities Measured at Fair Value on Nonrecurring Basis	The following table presents the Company’s assets that are measured at fair value on a nonrecurring basis at September 30, 2017 and December 31, 2016 , and the level within the fair value hierarchy: Fair Value Measurements at September 30, 2017 Total Quoted Prices Significant Significant Lower of cost or fair value expense for the nine months ended September 30, 2017 Other assets — vehicles (a) $ 206,076 $ — $ 206,076 $ — $ — Personal loans held for sale (b) 929,549 — — 929,549 237,980 Retail installment contracts held for sale (c) 845,910 — — 845,910 8,542 Auto loans impaired due to bankruptcy (d) 101,990 — 101,990 — 65,584 Fair Value Measurements at December 31, 2016 Total Quoted Prices Significant Significant Lower of cost or fair value expense for the year ended December 31, 2016 Other assets — vehicles (a) $ 257,382 $ — $ 257,382 $ — $ — Personal loans held for sale (b) 1,077,600 — — 1,077,600 414,703 Retail installment contracts held for sale (c) 1,045,815 — — 1,045,815 8,913 (a) The Company estimates the fair value of its vehicles, which are obtained either through repossession or lease termination, using historical auction rates and current market levels of used car prices. (b) Represents the portion of the portfolio specifically impaired as of period-end. The estimated fair value for personal loans held for sale is calculated based on a combination of estimated cash flows and market rates for similar loans with similar credit risks and a DCF analysis in which the Company uses significant unobservable inputs on key assumptions, including historical default rates and adjustments to reflect prepayment rates, discount rates reflective of the cost of funding, and credit loss expectations. The lower of cost or fair value adjustment for personal loans held for sale includes customer default activity and adjustments related to the net change in the portfolio balance during the reporting period. (c) The estimated fair value is calculated based on a DCF analysis in which the Company uses significant unobservable inputs on key assumptions, including expected default rates, prepayment rates, recovery rates, and discount rates reflective of the cost of funds and appropriate rate of returns. (d) For loans that are considered collateral-dependent, such as certain bankruptcy loans, impairment is measured based on the fair value of the collateral, less its estimated cost to sell. For the underlying collateral, the estimated fair value is obtained using historical auction rates and current market levels of used car prices.
Quantitative Information About Significant Unobservable Inputs for Assets Measured at Fair Value	The following table presents quantitative information about the significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis at September 30, 2017 : Financial Instruments Fair Value at September 30, 2017 Valuation Technique Unobservable Inputs Range Financial Assets: Retail installment contracts held for investment $ 24,799 Discounted Cash Flow Discount Rate 9.0% - 9.5% Default Rate 18% - 22% Prepayment Rate 6% Personal loans held for sale $ 929,549 Market / Income Approach Discount Rate 15% - 30% Default Rate 30% - 40% Retail installment contracts held for sale $ 845,910 Discounted Cash Flow Discount Rate 3% - 8% Default Rate 3.8% - 8.3% Prepayment Rate 17.8%
Quantitative Information About Significant Unobservable Inputs for Liabilities Measured at Fair Value	The following table presents quantitative information about the significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis at September 30, 2017 : Financial Instruments Fair Value at September 30, 2017 Valuation Technique Unobservable Inputs Range Financial Assets: Retail installment contracts held for investment $ 24,799 Discounted Cash Flow Discount Rate 9.0% - 9.5% Default Rate 18% - 22% Prepayment Rate 6% Personal loans held for sale $ 929,549 Market / Income Approach Discount Rate 15% - 30% Default Rate 30% - 40% Retail installment contracts held for sale $ 845,910 Discounted Cash Flow Discount Rate 3% - 8% Default Rate 3.8% - 8.3% Prepayment Rate 17.8%

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Options and Related Activity	A summary of the Company’s stock options and related activity as of and for the nine months ended September 30, 2017 is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Options outstanding at January 1, 2017 4,295,830 $ 12.70 5.6 $ 12,982 Granted — — — — Exercised (594,110 ) 9.40 — 2,503 Expired (142,795 ) 12.64 — — Forfeited (653,258 ) 14.57 — — Options outstanding at September 30, 2017 2,905,667 12.96 5.0 6,999 Options exercisable at September 30, 2017 2,641,214 $ 12.15 4.8 $ 8,517

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Summary of Changes in Accumulated Other Comprehensive Income (Loss)	A summary of changes in accumulated other comprehensive income (loss), net of tax, for the three and nine months ended September 30, 2017 and 2016 is as follows: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Beginning balance, unrealized gains (losses) on cash flow hedges $ 27,860 $ (50,766 ) $ 28,259 $ 2,125 Other comprehensive gain (loss) before reclassifications 1,061 17,391 (3,062 ) (50,949 ) Amounts reclassified out of accumulated other comprehensive income (loss) (a) (1,440 ) 6,777 2,284 22,226 Ending balance, unrealized gains (losses) on cash flow hedges $ 27,481 $ (26,598 ) $ 27,481 $ (26,598 ) (a) Amounts reclassified out of accumulated other comprehensive income (loss) during the three and nine months ended September 30, 2017 and 2016 consist of the following: Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Reclassification Amount reclassified Income statement line item Amount reclassified Income statement line item Cash flow hedges: Settlements of derivatives $ (1,461 ) Interest expense $ 10,799 Interest expense Tax expense (benefit) 21 (4,022 ) Net of tax $ (1,440 ) $ 6,777 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 Reclassification Amount reclassified Income statement line item Amount reclassified Income statement line item Cash flow hedges: Settlements of derivatives $ 3,158 Interest expense $ 35,442 Interest expense Tax expense (benefit) (874 ) (13,216 ) Net of tax $ 2,284 $ 22,226
Reclassification of Amounts Out of Accumulated Other Comprehensive Income (Loss)	Amounts reclassified out of accumulated other comprehensive income (loss) during the three and nine months ended September 30, 2017 and 2016 consist of the following: Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Reclassification Amount reclassified Income statement line item Amount reclassified Income statement line item Cash flow hedges: Settlements of derivatives $ (1,461 ) Interest expense $ 10,799 Interest expense Tax expense (benefit) 21 (4,022 ) Net of tax $ (1,440 ) $ 6,777 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 Reclassification Amount reclassified Income statement line item Amount reclassified Income statement line item Cash flow hedges: Settlements of derivatives $ 3,158 Interest expense $ 35,442 Interest expense Tax expense (benefit) (874 ) (13,216 ) Net of tax $ 2,284 $ 22,226

Investment Losses, Net (Tables)

Investment Losses, Net (Tables)	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Schedule of Investment Losses, Net	Investment losses, net was comprised of the following for the three and nine months ended September 30, 2017 and 2016 : Three Months Ended Nine Months Ended September 30, 2017 September 30, 2016 September 30, 2017 September 30, 2016 Gain (loss) on sale of loans and leases $ 29,974 $ (3,765 ) $ 16,913 $ (1,418 ) Lower of cost or market adjustments (84,718 ) (97,532 ) (246,522 ) (266,506 ) Other gains, losses and impairments, net 2,152 (4,753 ) 1,096 (8,491 ) $ (52,592 ) $ (106,050 ) $ (228,513 ) $ (276,415 )

Description of Business, Basi39

Description of Business, Basis of Presentation, and Significant Accounting Policies and Practices - Additional Information (Details)	9 Months Ended
	Sep. 30, 2017segment
Basis Of Presentation And Significant Accounting Policies [Line Items]
Number of reportable segments	1
SHUSA
Basis Of Presentation And Significant Accounting Policies [Line Items]
Ownership percentage held in the Company	58.70%
Public Shareholders
Basis Of Presentation And Significant Accounting Policies [Line Items]
Ownership percentage held in the Company	31.60%
DDFS LLC
Basis Of Presentation And Significant Accounting Policies [Line Items]
Ownership percentage held in the Company	9.70%
FCA
Basis Of Presentation And Significant Accounting Policies [Line Items]
Financing contract term	10 years

Description of Business, Basi40

Description of Business, Basis of Presentation, and Significant Accounting Policies and Practices - Recently Adopted Accounting Standards (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative-effect adjustment upon adoption of ASU 2016-09			$ 26,552
Excess tax benefits, net of tax	$ 671	$ 430
Retained Earnings
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative-effect adjustment upon adoption of ASU 2016-09			25,113
Accounting Standards Update 2016-09, Excess Tax Benefit Component | Retained Earnings
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative-effect adjustment upon adoption of ASU 2016-09			26,552
Accounting Standards Update 2016-09, Forfeiture Rate Component | Retained Earnings
New Accounting Pronouncement, Early Adoption [Line Items]
Cumulative-effect adjustment upon adoption of ASU 2016-09			$ (1,439)

Finance Receivables - Summary o

Finance Receivables - Summary of Financing Receivables Held for Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased receivables	$ 30,396	$ 158,264
Capital lease receivables	16,121	22,034
Finance receivables held for investment, net	22,667,203	23,481,001
Purchased receivables portfolios acquired with deteriorated credit quality:
Outstanding balance	49,089	231,360
Outstanding recorded investment, net of impairment	30,646	159,451
Recurring
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retail installment contracts acquired individually	24,799	24,495
Retail Installment Contracts Acquired Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	22,599,161	23,219,724
Retail Installment Contracts Acquired Individually | Non-TDR
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	18,183,295	19,317,593
Retail Installment Contracts Acquired Individually | Non-TDR | Unpaid principal balance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	20,044,330	21,528,406
Retail Installment Contracts Acquired Individually | Non-TDR | Credit loss allowance - specific
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	0	0
Retail Installment Contracts Acquired Individually | Non-TDR | Credit loss allowance - collective
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	(1,589,151)	(1,799,760)
Retail Installment Contracts Acquired Individually | Non-TDR | Discount
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	(331,179)	(467,757)
Retail Installment Contracts Acquired Individually | Non-TDR | Capitalized origination costs and fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	59,295	56,704
Retail Installment Contracts Acquired Individually | TDR
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	4,415,866	3,902,131
Retail Installment Contracts Acquired Individually | TDR | Unpaid principal balance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	6,276,659	5,599,567
Retail Installment Contracts Acquired Individually | TDR | Credit loss allowance - specific
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	(1,782,114)	(1,611,295)
Retail Installment Contracts Acquired Individually | TDR | Credit loss allowance - collective
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	0	0
Retail Installment Contracts Acquired Individually | TDR | Discount
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	(84,588)	(91,359)
Retail Installment Contracts Acquired Individually | TDR | Capitalized origination costs and fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	5,909	5,218
Receivables from Dealers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	15,902	68,707
Receivables from Dealers | Unpaid principal balance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	16,069	69,431
Receivables from Dealers | Credit loss allowance - specific
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	0	0
Receivables from Dealers | Credit loss allowance - collective
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	(167)	(724)
Receivables from Dealers | Discount
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	0	0
Receivables from Dealers | Capitalized origination costs and fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	0	0
Personal Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	5,623	12,272
Personal Loans | Unpaid principal balance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	9,188	19,361
Personal Loans | Credit loss allowance - specific
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	0	0
Personal Loans | Credit loss allowance - collective
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	(3,725)	0
Personal Loans | Discount
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	(16)	(7,721)
Personal Loans | Capitalized origination costs and fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for investment, net	$ 176	$ 632

Finance Receivables - Additiona

Finance Receivables - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Schedule Of Financing Receivables [Line Items]
Purchases of portfolios of finance receivables held for investment			$ 228,843,000	$ 427,384,000
Committed amount	$ 3,000,000,000		3,000,000,000
Credit facility	4,965,888,000		4,965,888,000		$ 6,739,817,000
Receivables Acquired with Deteriorated Credit Quality
Schedule Of Financing Receivables [Line Items]
Financing receivable, net	$ 99,301,000		$ 99,301,000
Texas
Schedule Of Financing Receivables [Line Items]
Retail installment contracts held for investment (as a percent)	16.00%		16.00%
Florida
Schedule Of Financing Receivables [Line Items]
Retail installment contracts held for investment (as a percent)	12.00%		12.00%
California
Schedule Of Financing Receivables [Line Items]
Retail installment contracts held for investment (as a percent)	9.00%		9.00%
Georgia
Schedule Of Financing Receivables [Line Items]
Retail installment contracts held for investment (as a percent)	6.00%		6.00%
Other States (less than 5%)
Schedule Of Financing Receivables [Line Items]
Retail installment contracts held for investment (as a percent)	5.00%		5.00%
Virginia
Schedule Of Financing Receivables [Line Items]
Percentage of remaining receivable from dealers held for investment	62.00%		62.00%
New York
Schedule Of Financing Receivables [Line Items]
Percentage of remaining receivable from dealers held for investment	28.00%		28.00%
Missouri
Schedule Of Financing Receivables [Line Items]
Percentage of remaining receivable from dealers held for investment	10.00%		10.00%
Wisconsin
Schedule Of Financing Receivables [Line Items]
Percentage of remaining receivable from dealers held for investment	1.00%		1.00%
Retail Installment Contracts
Schedule Of Financing Receivables [Line Items]
Loans classified as non-performing, period for classification			60 days
Retail Installment Contracts | Unpaid Principal Balance
Schedule Of Financing Receivables [Line Items]
Financing receivables recognized in period	$ 0	$ 135,772,000	$ 226,613,000	327,443,000
Consumer Portfolio Segment | Personal Loans
Schedule Of Financing Receivables [Line Items]
Financing receivable, net	5,623,000		5,623,000		11,733,000
Chrysler Capital Loans
Schedule Of Financing Receivables [Line Items]
Purchases of portfolios of finance receivables held for investment			5,168,089,000	$ 6,507,597,000
Chrysler Capital Loans | Retail Installment Contracts | Automobile Loan
Schedule Of Financing Receivables [Line Items]
Financing receivable, net	6,936,988,000		$ 6,936,988,000		7,365,444,000
Chrysler Capital Loans | Credit Concentration Risk | Accounts Receivable
Schedule Of Financing Receivables [Line Items]
Concentration risk percentage			46.00%	51.00%
Chrysler Capital Leases
Schedule Of Financing Receivables [Line Items]
Purchases of portfolios of finance receivables held for investment			$ 4,693,392,000	$ 4,612,284,000
Chrysler Capital Leases | Credit Concentration Risk | Accounts Receivable | Automobile Loan
Schedule Of Financing Receivables [Line Items]
Concentration risk percentage			31.00%	32.00%
Fleet Contracts
Schedule Of Financing Receivables [Line Items]
Financing receivable, net	634,677,000		$ 634,677,000		848,918,000
Receivables from Dealers
Schedule Of Financing Receivables [Line Items]
Committed amount					$ 50,000,000
Credit facility	$ 50,000,000		$ 50,000,000

Finance Receivables - Changes i

Finance Receivables - Changes in Accretable Yield on Purchased Receivables Portfolios (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance — beginning of period	$ 87,994	$ 137,747	$ 107,041	$ 178,582
Accretion of accretable yield	(5,223)	(17,830)	(26,670)	(58,774)
Disposals/transfers	(62,183)	0	(62,183)	0
Reclassifications from (to) nonaccretable difference	1,648	(8,627)	4,048	(8,518)
Balance — end of period	$ 22,236	$ 111,290	$ 22,236	$ 111,290

Finance Receivables - Schedule

Finance Receivables - Schedule of Carrying Values of Finance Receivables Held for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for sale, net	$ 1,775,459	$ 2,123,415
Retail installment contracts acquired individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for sale, net	845,910	1,045,815
Personal loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables held for sale, net	$ 929,549	$ 1,077,600

Finance Receivables - Schedul45

Finance Receivables - Schedule of Sales of Retail Installment Contracts and Charged-off Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Receivables [Abstract]
Sales of retail installment contracts to third parties	$ 0	$ 793,804	$ 260,568	$ 2,312,983
Proceeds from sales of charged-off assets	$ 27,954	$ 12,521	$ 76,746	$ 47,594

Finance Receivables - Schedul46

Finance Receivables - Schedule of Servicing of Retail Installment Contracts (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Receivables [Abstract]
Serviced balance of retail installment contracts and leases sold to third parties	$ 6,674,980	$ 10,116,788

Leases - Summary of Leased Vehi

Leases - Summary of Leased Vehicles (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Leases [Abstract]
Leased vehicles	$ 13,831,441	$ 11,939,295
Less: accumulated depreciation	(2,830,041)	(2,326,342)
Depreciated net capitalized cost	11,001,400	9,612,953
Manufacturer subvention payments, net of accretion	(1,098,331)	(1,066,531)
Origination fees and other costs	28,214	18,206
Net book value	$ 9,931,283	$ 8,564,628

Leases - Future Minimum Rental

Leases - Future Minimum Rental Payments Due to Lessor under Operating Leases (Details) $ in Thousands	Sep. 30, 2017USD ($)
Leases [Abstract]
Remainder of 2017	$ 474,217
2,018	1,497,436
2,019	859,498
2,020	219,541
2,021	4,282
Thereafter	0
Total	$ 3,054,974

Leases - Summary of Capital Lea

Leases - Summary of Capital Lease Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Leases [Abstract]
Gross investment in capital leases	$ 25,725	$ 39,417
Origination fees and other	79	150
Less unearned income	(4,077)	(7,545)
Net investment in capital leases before allowance	21,727	32,022
Less: allowance for lease losses	(5,606)	(9,988)
Net investment in capital leases	$ 16,121	$ 22,034

Leases - Future Minimum Renta50

Leases - Future Minimum Rental Receivable under Capital Leases (Details) $ in Thousands	Sep. 30, 2017USD ($)
Leases [Abstract]
Remainder of 2017	$ 2,864
2,018	11,004
2,019	5,907
2,020	3,206
2,021	1,994
Thereafter	750
Total	$ 25,725

Credit Loss Allowance and Cre51

Credit Loss Allowance and Credit Quality - Additional Information (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Jun. 30, 2017	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans classified as TDRs that were placed on nonaccrual status	$ 482,593,000
Chrysler Capital
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan origination, required minimum payment, percentage of scheduled payment		90.00%
Third Party
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan origination, required minimum payment, percentage of scheduled payment	90.00%	50.00%
Receivables From Dealers
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses	$ 167,000	$ 724,000	$ 713,000	$ 648,000	$ 837,000	$ 916,000
Loans classified as non-performing, period for classification	90 days
Receivables that were 30 days or more delinquent	$ 0	0
Receivables classified as a TDR	$ 0	0
Retail Installment Contracts
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans classified as non-performing, period for classification	60 days
Retail Installment Contracts Held-for-sale
Financing Receivable, Allowance for Credit Losses [Line Items]
Receivables that were 30 days or more delinquent	$ 34,109,000	33,886,000
Retail Installment Contracts Acquired Individually
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses	$ 3,371,265,000	$ 3,411,055,000	$ 3,446,968,000	$ 3,401,285,000	$ 3,422,736,000	$ 3,197,414,000
TDRs, deferral period	90 days

Credit Loss Allowance and Cre52

Credit Loss Allowance and Credit Quality - Summary of Activity in Loan Loss Allowance (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Retail Installment Contracts Acquired Individually
Allowance for Loan and Lease Losses [Roll Forward]
Balance — beginning of period	$ 3,446,968,000	$ 3,422,736,000	$ 3,411,055,000	$ 3,197,414,000	$ 3,197,414,000
Provision for credit losses	535,427,000	609,396,000	1,682,894,000	1,787,277,000
Charge-offs	(1,206,059,000)	(1,246,760,000)	(3,542,471,000)	(3,429,905,000)
Recoveries	594,929,000	615,913,000	1,819,787,000	1,846,499,000
Balance — end of period	3,371,265,000	3,401,285,000	3,371,265,000	3,401,285,000	3,411,055,000
Partial write-down of loans	18,000,000	0	66,000,000	0
Receivables from Dealers
Allowance for Loan and Lease Losses [Roll Forward]
Balance — beginning of period	713,000	837,000	724,000	916,000	916,000
Provision for credit losses	(546,000)	(189,000)	(557,000)	(133,000)
Charge-offs	0	0	0	(135,000)
Recoveries	0	0	0	0
Balance — end of period	167,000	648,000	167,000	648,000	724,000
Personal Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance — beginning of period	4,362,000		0
Provision for credit losses	1,134,000		10,275,000
Charge-offs	(1,976,000)		(7,194,000)
Recoveries	205,000		644,000
Balance — end of period	3,725,000		3,725,000		0
Finance Leases Portfolio Segment
Allowance for Loan and Lease Losses [Roll Forward]
Balance — beginning of period	6,367,000	12,752,000	9,988,000	19,878,000	19,878,000
Provision for credit losses	432,000	387,000	(597,000)	(1,669,000)
Charge-offs	(2,655,000)	(5,712,000)	(9,415,000)	(28,267,000)
Recoveries	1,462,000	3,617,000	5,630,000	21,102,000
Balance — end of period	$ 5,606,000	$ 11,044,000	$ 5,606,000	$ 11,044,000	$ 9,988,000

Credit Loss Allowance and Cre53

Credit Loss Allowance and Credit Quality - Summary of Impairment Activity Related to Purchased Receivables Portfolios (Details) - Purchased Receivables Portfolios - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Balance — beginning of period	$ 169,323	$ 168,518	$ 169,323	$ 172,308
Incremental provisions for purchased receivable portfolios	0	0	0	0
Incremental reversal of provisions for purchased receivable portfolios	0	804	0	(2,986)
Balance — end of period	$ 169,323	$ 169,322	$ 169,323	$ 169,322

Credit Loss Allowance and Cre54

Credit Loss Allowance and Credit Quality - Summary of Delinquencies (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable Recorded Investment Past Due [Line Items]
Principal, 30-59 days past due	$ 2,580,226	$ 2,925,503
Delinquent principal over 59 days	1,464,543	1,526,743
Total delinquent principal	4,044,769	4,452,246
Loans Acquired Individually
Financing Receivable Recorded Investment Past Due [Line Items]
Principal, 30-59 days past due	2,574,165	2,911,800
Delinquent principal over 59 days	1,460,793	1,520,105
Total delinquent principal	4,034,958	4,431,905
Purchased Receivables Portfolios
Financing Receivable Recorded Investment Past Due [Line Items]
Principal, 30-59 days past due	6,061	13,703
Delinquent principal over 59 days	3,750	6,638
Total delinquent principal	$ 9,811	$ 20,341

Credit Loss Allowance and Cre55

Credit Loss Allowance and Credit Quality - Summary of Credit Risk Profile (Details) - Retail Installment Contracts Held for Investment	Sep. 30, 2017	Dec. 31, 2016
Commercial Portfolio Segment
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net, percentage	2.40%	3.10%
Consumer Portfolio Segment | No-FICOs
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net, percentage	11.60%	12.20%
Consumer Portfolio Segment | Under 540
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net, percentage	22.40%	22.10%
Consumer Portfolio Segment | 540-599
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net, percentage	32.40%	31.40%
Consumer Portfolio Segment | 600-639
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net, percentage	17.50%	17.40%
Consumer Portfolio Segment | Over 640
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net, percentage	13.70%	13.80%

Credit Loss Allowance and Cre56

Credit Loss Allowance and Credit Quality - Summary Commercial Loan Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fleet Contracts
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	$ 634,677	$ 848,918
Fleet Contracts | Total
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	19,978	21,863
Fleet Contracts | Pass
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	13,482	17,585
Fleet Contracts | Special Mention
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	5,688	2,790
Fleet Contracts | Substandard
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	808	1,488
Fleet Contracts | Doubtful
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	0	0
Fleet Contracts | Loss
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	0	0
Receivables From Dealers | Total
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	16,069	69,431
Receivables From Dealers | Pass
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	14,340	67,681
Receivables From Dealers | Special Mention
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	117	0
Receivables From Dealers | Substandard
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	1,613	1,750
Receivables From Dealers | Doubtful
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	0	0
Receivables From Dealers | Loss
Financing Receivable Recorded Investment [Line Items]
Financing receivable, net	$ 0	$ 0

Credit Loss Allowance and Cre57

Credit Loss Allowance and Credit Quality - Summary of TDRs (Details) - Retail Installment Contracts - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable Modifications [Line Items]
Outstanding recorded investment	$ 6,330,331	$ 5,637,792
Impairment	(1,782,114)	(1,611,295)
Outstanding recorded investment, net of impairment	4,548,217	$ 4,026,497
Collateral Dependent
Financing Receivable Modifications [Line Items]
Outstanding recorded investment	50,700
TDR write down	$ 23,700

Credit Loss Allowance and Cre58

Credit Loss Allowance and Credit Quality - Summary of Delinquent TDRs (Details) - Retail Installment Contracts - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Troubled Debt Restructuring Debtor Current Period [Line Items]
Principal, 30-59 days past due	$ 1,184,804	$ 1,253,848
Delinquent principal over 59 days	753,606	736,691
Total delinquent TDR principal	$ 1,938,410	$ 1,990,539

Credit Loss Allowance and Cre59

Credit Loss Allowance and Credit Quality - Average Recorded Investment and Income Recognized on TDR Loans (Details) - Retail Installment Contracts - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable Modifications [Line Items]
Average outstanding recorded investment in TDRs	$ 6,143,345	$ 5,213,132	$ 5,929,146	$ 4,940,280
Interest income recognized	$ 225,871	$ 207,115	$ 711,033	$ 576,682

Credit Loss Allowance and Cre60

Credit Loss Allowance and Credit Quality - Summary of Financial Effects of TDRs (Details) - Retail Installment Contracts $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract
Financing Receivable Modifications [Line Items]
Outstanding recorded investment before TDR	$ 1,123,080	$ 929,871	$ 2,778,407	$ 2,463,409
Outstanding recorded investment after TDR	$ 1,122,450	$ 932,472	$ 2,776,006	$ 2,478,035
Number of contracts | contract	66,001	52,780	160,098	139,524

Credit Loss Allowance and Cre61

Credit Loss Allowance and Credit Quality - Summary of Loan Restructuring Accounted for as TDRs (Details) - Retail Installment Contracts $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract
Financing Receivable Modifications [Line Items]
Recorded investment in TDRs that subsequently defaulted | $	$ 197,953	$ 206,247	$ 600,117	$ 565,724
Number of contracts | contract	11,219	11,745	33,735	32,256

Debt - Schedule of Credit Facil

Debt - Schedule of Credit Facilities (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017	Dec. 31, 2016
Line Of Credit Facility [Line Items]
Utilized Balance	$ 4,965,888,000		$ 6,739,817,000
Committed Amount	3,000,000,000
Unsecured Debt
Line Of Credit Facility [Line Items]
Utilized Balance	0		1,316,568,000
Promissory Note | Subsequent Event
Line Of Credit Facility [Line Items]
Executed amount of note		$ 400,000,000
Total facilities with third parties
Line Of Credit Facility [Line Items]
Utilized Balance	4,965,888,000		6,739,817,000
Committed Amount	10,308,456,000		10,393,309,000
Assets Pledged	5,925,343,000		8,606,745,000
Restricted Cash Pledged	121,659,000		188,730,000
Warehouse line, due January 2018
Line Of Credit Facility [Line Items]
Utilized Balance	181,083,000		153,784,000
Committed Amount	$ 500,000,000		$ 500,000,000
Effective Rate	2.96%		3.17%
Assets Pledged	$ 276,519,000		$ 213,578,000
Restricted Cash Pledged	0		0
Warehouse line, due Various
Line Of Credit Facility [Line Items]
Utilized Balance	258,545,000		462,085,000
Committed Amount	$ 1,250,000,000		$ 1,250,000,000
Effective Rate	1.21%		2.52%
Assets Pledged	$ 387,668,000		$ 653,014,000
Restricted Cash Pledged	11,554,000		14,916,000
Warehouse line, due August 2018
Line Of Credit Facility [Line Items]
Utilized Balance	0		534,220,000
Committed Amount	$ 780,000,000		$ 780,000,000
Effective Rate	1.39%		1.98%
Assets Pledged	$ 2,329,000		$ 608,025,000
Restricted Cash Pledged	121,000		24,520,000
Warehouse line, due August 2018
Line Of Credit Facility [Line Items]
Utilized Balance	2,766,543,000		3,119,943,000
Committed Amount	$ 3,120,000,000		$ 3,120,000,000
Effective Rate	2.22%		1.91%
Assets Pledged	$ 3,724,088,000		$ 4,700,774,000
Restricted Cash Pledged	61,367,000		70,991,000
Warehouse line, due October 2018
Line Of Credit Facility [Line Items]
Utilized Balance	445,277,000		702,377,000
Committed Amount	$ 1,800,000,000		$ 1,800,000,000
Effective Rate	3.45%		2.51%
Assets Pledged	$ 661,090,000		$ 994,684,000
Restricted Cash Pledged	12,644,000		23,378,000
Repurchase facility, due December 2017
Line Of Credit Facility [Line Items]
Utilized Balance	254,120,000		507,800,000
Committed Amount	$ 254,120,000		$ 507,800,000
Effective Rate	3.35%		2.83%
Assets Pledged	$ 0		$ 0
Restricted Cash Pledged	13,708,000		22,613,000
Repurchase facility, due April 2018
Line Of Credit Facility [Line Items]
Utilized Balance	202,311,000
Committed Amount	$ 202,311,000
Effective Rate	2.62%
Assets Pledged	$ 0
Restricted Cash Pledged	0
Repurchase facility, due March 2018
Line Of Credit Facility [Line Items]
Utilized Balance	148,690,000
Committed Amount	$ 148,690,000
Effective Rate	3.88%
Assets Pledged	$ 0
Restricted Cash Pledged	0
Repurchase facility, due November 2017
Line Of Credit Facility [Line Items]
Utilized Balance	53,335,000
Committed Amount	$ 53,335,000
Effective Rate	2.43%
Assets Pledged	$ 0
Restricted Cash Pledged	0
Repurchase facility, due April 2017
Line Of Credit Facility [Line Items]
Utilized Balance			235,509,000
Committed Amount			$ 235,509,000
Effective Rate			2.04%
Assets Pledged			$ 0
Restricted Cash Pledged			0
Warehouse line, due November 2018
Line Of Credit Facility [Line Items]
Utilized Balance	274,499,000		578,999,000
Committed Amount	$ 1,000,000,000		$ 1,000,000,000
Effective Rate	3.44%		1.56%
Assets Pledged	$ 401,219,000		$ 850,758,000
Restricted Cash Pledged	7,920,000		17,642,000
Warehouse line, due October 2018
Line Of Credit Facility [Line Items]
Utilized Balance	87,965,000		202,000,000
Committed Amount	$ 400,000,000		$ 400,000,000
Effective Rate	3.72%		2.22%
Assets Pledged	$ 132,197,000		$ 290,867,000
Restricted Cash Pledged	2,852,000		5,435,000
Warehouse line, due November 2018
Line Of Credit Facility [Line Items]
Utilized Balance	57,820,000		0
Committed Amount	$ 500,000,000		$ 500,000,000
Effective Rate	4.54%		2.07%
Assets Pledged	$ 63,712,000		$ 0
Restricted Cash Pledged	2,215,000		0
Warehouse line, due October 2017
Line Of Credit Facility [Line Items]
Utilized Balance	235,700,000		243,100,000
Committed Amount	$ 300,000,000		$ 300,000,000
Effective Rate	2.67%		2.38%
Assets Pledged	$ 276,521,000		$ 295,045,000
Restricted Cash Pledged	9,278,000		9,235,000
Total facilities with Santander and related subsidiaries
Line Of Credit Facility [Line Items]
Utilized Balance	2,365,400,000		2,975,000,000
Committed Amount	7,850,000,000		6,300,000,000
Assets Pledged	0		0
Restricted Cash Pledged	0		0
Line of credit, due December 2017
Line Of Credit Facility [Line Items]
Utilized Balance	0		500,000,000
Committed Amount	$ 1,000,000,000		$ 500,000,000
Effective Rate	3.04%		3.04%
Assets Pledged	$ 0		$ 0
Restricted Cash Pledged	0		0
Line of credit, due December 2018
Line Of Credit Facility [Line Items]
Utilized Balance	0		175,000,000
Committed Amount	$ 1,000,000,000		$ 500,000,000
Effective Rate	3.09%		3.87%
Assets Pledged	$ 0		$ 0
Restricted Cash Pledged	0		0
Line of credit, due December 2017
Line Of Credit Facility [Line Items]
Utilized Balance			1,000,000,000
Committed Amount			$ 1,000,000,000
Effective Rate			2.86%
Assets Pledged			$ 0
Restricted Cash Pledged			0
Line of credit, due December 2018
Line Of Credit Facility [Line Items]
Utilized Balance	265,400,000		1,000,000,000
Committed Amount	$ 750,000,000		$ 1,000,000,000
Effective Rate	3.77%		2.88%
Assets Pledged	$ 0		$ 0
Restricted Cash Pledged	0		0
Line of credit, due March 2017
Line Of Credit Facility [Line Items]
Utilized Balance			300,000,000
Committed Amount			$ 300,000,000
Effective Rate			2.25%
Assets Pledged			$ 0
Restricted Cash Pledged			0
Line of credit, due March 2019
Line Of Credit Facility [Line Items]
Utilized Balance	0		0
Committed Amount	$ 3,000,000,000		$ 3,000,000,000
Effective Rate	3.94%		3.74%
Assets Pledged	$ 0		$ 0
Restricted Cash Pledged	0		0
Promissory Note, due March 2019
Line Of Credit Facility [Line Items]
Utilized Balance	300,000,000
Committed Amount	$ 300,000,000
Effective Rate	2.45%
Assets Pledged	$ 0
Restricted Cash Pledged	0
Promissory Note, due May 2020
Line Of Credit Facility [Line Items]
Utilized Balance	500,000,000
Committed Amount	$ 500,000,000
Effective Rate	3.49%
Assets Pledged	$ 0
Restricted Cash Pledged	0
Promissory Note, due March 2022
Line Of Credit Facility [Line Items]
Utilized Balance	650,000,000
Committed Amount	$ 650,000,000
Effective Rate	4.20%
Assets Pledged	$ 0
Restricted Cash Pledged	0
Fair value hedge adjustment	4,500,000
Promissory Note, due August 2021
Line Of Credit Facility [Line Items]
Utilized Balance	650,000,000
Committed Amount	$ 650,000,000
Effective Rate	3.44%
Assets Pledged	$ 0
Restricted Cash Pledged	0
Revolving credit facilities
Line Of Credit Facility [Line Items]
Utilized Balance	7,331,288,000		9,714,817,000
Committed Amount	18,158,456,000		16,693,309,000
Assets Pledged	5,925,343,000		8,606,745,000
Restricted Cash Pledged	$ 121,659,000		$ 188,730,000
Repurchase facilities
Line Of Credit Facility [Line Items]
Debt term	1 year

Debt - Additional Information (

Debt - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Aug. 03, 2017	May 11, 2017	Mar. 31, 2017	Mar. 06, 2017	Dec. 31, 2016	Mar. 06, 2014
Debt Instrument [Line Items]
Committed amount	$ 3,000,000,000		$ 3,000,000,000
Private issuance of notes backed by vehicle leases	5,507,315,000		5,507,315,000						$ 3,862,274,000
Amortization of debt issuance costs	9,489,000	$ 7,021,000	26,595,000	$ 20,224,000
Interest expense on secured structured financing	152,950,000	$ 108,720,000	409,968,000	$ 305,677,000
Santander Consumer ABS Funding 2, LLC
Debt Instrument [Line Items]
Committed amount										$ 300,000,000
Revolving credit facilities
Debt Instrument [Line Items]
Committed amount	18,158,456,000		18,158,456,000						$ 16,693,309,000
Total facilities with Santander and related subsidiaries
Debt Instrument [Line Items]
Committed amount	2,750,000,000		$ 2,750,000,000
Total facilities with Santander and related subsidiaries, Maturity Year One
Debt Instrument [Line Items]
Debt term			3 years
Total facilities with Santander and related subsidiaries, Maturity Year Two
Debt Instrument [Line Items]
Debt term			5 years
Secured Debt | Total facilities with Santander and related subsidiaries | Revolving credit facilities
Debt Instrument [Line Items]
Committed amount	$ 2,100,000,000		$ 2,100,000,000
Promissory Note | Santander Consumer ABS Funding 2, LLC
Debt Instrument [Line Items]
Debt, principal								$ 300,000,000
Promissory Note | Santander Consumer ABS Funding 2, LLC | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)			1.35%
Promissory Note | Promissory Note, due May 2020 | SC Illinois
Debt Instrument [Line Items]
Debt, principal						$ 500,000,000
Stated interest rate						3.49%
Promissory Note | Promissory Note, due March 2022 | SC Illinois
Debt Instrument [Line Items]
Debt, principal							$ 650,000,000
Stated interest rate							4.20%
Promissory Note | Promissory Note, due August 2021 | SC Illinois
Debt Instrument [Line Items]
Debt, principal					$ 650,000,000
Stated interest rate					3.44%

Debt - Summary of Secured Struc

Debt - Summary of Secured Structured Financings (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Balance	$ 23,258,363	$ 21,608,889
Secured Structured Financings
Debt Instrument [Line Items]
Balance	23,258,363	21,608,889
Initial Note Amounts Issued	48,099,673	46,472,073
Collateral	29,548,440	29,496,411
Restricted Cash	1,858,344	1,924,467
Secured Structured Financings | Securitizations
Debt Instrument [Line Items]
Balance	14,927,737	13,436,482
Initial Note Amounts Issued	35,870,432	32,386,082
Collateral	19,625,345	17,474,524
Restricted Cash	1,487,227	1,423,599
Secured Structured Financings | 2012 Securitizations
Debt Instrument [Line Items]
Balance		197,470
Initial Note Amounts Issued		2,525,540
Collateral		312,710
Restricted Cash		$ 73,733
Secured Structured Financings | 2012 Securitizations | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate		0.92%
Secured Structured Financings | 2012 Securitizations | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate		1.23%
Secured Structured Financings | 2013 Securitizations
Debt Instrument [Line Items]
Balance	612,494	$ 1,172,904
Initial Note Amounts Issued	5,439,700	6,689,700
Collateral	797,901	1,484,014
Restricted Cash	$ 166,215	$ 222,187
Secured Structured Financings | 2013 Securitizations | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	0.90%	0.89%
Secured Structured Financings | 2013 Securitizations | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.59%	1.59%
Secured Structured Financings | 2014 Securitizations
Debt Instrument [Line Items]
Balance	$ 1,340,311	$ 1,858,600
Initial Note Amounts Issued	6,391,020	6,391,020
Collateral	1,584,279	2,360,939
Restricted Cash	$ 220,843	$ 250,806
Secured Structured Financings | 2014 Securitizations | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.16%	1.16%
Secured Structured Financings | 2014 Securitizations | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.72%	1.72%
Secured Structured Financings | 2015 Securitizations
Debt Instrument [Line Items]
Balance	$ 2,821,425	$ 4,326,292
Initial Note Amounts Issued	9,185,032	9,317,032
Collateral	3,964,228	5,743,884
Restricted Cash	$ 387,272	$ 468,787
Secured Structured Financings | 2015 Securitizations | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.33%	1.33%
Secured Structured Financings | 2015 Securitizations | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	2.29%	2.29%
Secured Structured Financings | 2016 Securitizations
Debt Instrument [Line Items]
Balance	$ 4,087,267	$ 5,881,216
Initial Note Amounts Issued	7,462,790	7,462,790
Collateral	5,425,003	7,572,977
Restricted Cash	$ 366,363	$ 408,086
Secured Structured Financings | 2016 Securitizations | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.63%	1.63%
Secured Structured Financings | 2016 Securitizations | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	2.80%	2.46%
Secured Structured Financings | 2017 Securitizations
Debt Instrument [Line Items]
Balance	$ 6,066,240
Initial Note Amounts Issued	7,391,890
Collateral	7,853,934
Restricted Cash	$ 346,534
Secured Structured Financings | 2017 Securitizations | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.35%
Secured Structured Financings | 2017 Securitizations | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	2.52%
Secured Structured Financings | Privately issued amortizing notes
Debt Instrument [Line Items]
Balance	$ 8,330,626	$ 8,172,407
Initial Note Amounts Issued	12,229,241	14,085,991
Collateral	9,923,095	12,021,887
Restricted Cash	371,117	500,868
Secured Structured Financings | 2010 Private issuances
Debt Instrument [Line Items]
Balance		113,157
Initial Note Amounts Issued		$ 516,000
Initial Weighted Average Interest Rate		1.29%
Collateral		$ 213,235
Restricted Cash		6,270
Secured Structured Financings | 2011 Private issuances
Debt Instrument [Line Items]
Balance	360,029	342,369
Initial Note Amounts Issued	$ 1,700,000	$ 1,700,000
Initial Weighted Average Interest Rate	1.46%	1.46%
Collateral	$ 475,937	$ 617,945
Restricted Cash	23,648	31,425
Secured Structured Financings | 2013 Private issuances
Debt Instrument [Line Items]
Balance	2,379,762	2,375,964
Initial Note Amounts Issued	2,044,054	2,693,754
Collateral	3,716,406	4,122,963
Restricted Cash	$ 153,499	$ 164,740
Secured Structured Financings | 2013 Private issuances | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.28%	1.13%
Secured Structured Financings | 2013 Private issuances | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.38%	1.38%
Secured Structured Financings | 2014 Private issuances
Debt Instrument [Line Items]
Balance	$ 159,957	$ 643,428
Initial Note Amounts Issued	1,530,125	3,271,175
Collateral	274,552	1,129,506
Restricted Cash	$ 11,055	$ 68,072
Secured Structured Financings | 2014 Private issuances | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.05%	1.05%
Secured Structured Financings | 2014 Private issuances | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.40%	1.40%
Secured Structured Financings | 2015 Private issuances
Debt Instrument [Line Items]
Balance	$ 2,223,017	$ 2,185,166
Initial Note Amounts Issued	2,305,062	2,855,062
Collateral	1,137,412	2,384,661
Restricted Cash	$ 52,172	$ 140,269
Secured Structured Financings | 2015 Private issuances | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	0.88%	0.88%
Secured Structured Financings | 2015 Private issuances | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	2.81%	2.81%
Secured Structured Financings | 2016 Private issuances
Debt Instrument [Line Items]
Balance	$ 1,720,933	$ 2,512,323
Initial Note Amounts Issued	3,050,000	3,050,000
Collateral	2,441,657	3,553,577
Restricted Cash	$ 89,456	$ 90,092
Secured Structured Financings | 2016 Private issuances | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.55%	1.55%
Secured Structured Financings | 2016 Private issuances | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	2.86%	2.86%
Secured Structured Financings | 2017 Private issuances
Debt Instrument [Line Items]
Balance	$ 1,486,928
Initial Note Amounts Issued	1,600,000
Collateral	1,877,131
Restricted Cash	$ 41,287
Secured Structured Financings | 2017 Private issuances | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	1.85%
Secured Structured Financings | 2017 Private issuances | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate	2.44%

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Securitization Financial Asset For Which Transfer Is Accounted As Sale [Line Items]
Gross retail installment contracts transferred and serviced	$ 26,315,659,000		$ 26,315,659,000		$ 27,802,971,000
Receivables securitized	2,998,430,000	$ 2,043,114,000	15,395,158,000	$ 12,026,706,000
VIE, Not Primary Beneficiary
Securitization Financial Asset For Which Transfer Is Accounted As Sale [Line Items]
Gross retail installment contracts transferred and serviced	3,955,935,000		3,955,935,000		$ 2,741,101,000
Receivables securitized	1,347,010,000	$ 0	2,583,341,000	$ 0
Loss on retail installment contracts	6,846,000		13,026,000
Maximum exposure to loss, involvement with the VIE	$ 0		$ 0

Variable Interest Entities - Su

Variable Interest Entities - Summary of Cash Flows Received from Securitization Trusts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Variable Interest Entity [Line Items]
Assets securitized	$ 2,998,430	$ 2,043,114	$ 15,395,158	$ 12,026,706
Net proceeds from new securitizations	2,936,719	1,688,822	11,998,611	9,509,135
Net proceeds from sale of retained bonds	0	0	273,733	128,798
Cash received for servicing fees	228,131	200,634	653,048	595,070
Net distributions from Trusts	666,179	776,306	2,073,965	2,167,512
Total cash received from Trusts	3,831,029	2,665,762	14,999,357	12,400,515
VIE, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets securitized	1,347,010	0	2,583,341	0
Net proceeds from new securitizations	1,347,430	0	2,588,227	0
Cash received for servicing fees	12,309	10,027	25,677	38,885
Total cash received from Trusts	$ 1,359,739	$ 10,027	$ 2,613,904	$ 38,885

Variable Interest Entities - Of

Variable Interest Entities - Off-balance Sheet Variable Interest Entities Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Total serviced for others portfolio	$ 26,315,659	$ 27,802,971
VIE, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total serviced for others portfolio	3,955,935	2,741,101
VIE, Not Primary Beneficiary | Chrysler Capital securitizations
Variable Interest Entity [Line Items]
Total serviced for others portfolio	1,690,729	2,472,756
VIE, Not Primary Beneficiary | Other third parties
Variable Interest Entity [Line Items]
Total serviced for others portfolio	0	268,345
VIE, Not Primary Beneficiary | Third parties
Variable Interest Entity [Line Items]
Total serviced for others portfolio	1,690,729	2,741,101
VIE, Not Primary Beneficiary | Santander
Variable Interest Entity [Line Items]
Total serviced for others portfolio	$ 2,265,206	$ 0

Derivative Financial Instrume68

Derivative Financial Instruments - Summary of Underlying Notional Amounts and Aggregate Fair Values (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Asset	$ 191,659	$ 123,895
Liability	(142,818)	(107,969)
Interest rate swaps | Not Designated As Hedges
Derivative [Line Items]
Notional	1,493,800	1,019,900
Fair Value	8,801	1,939
Asset	8,801	2,076
Liability	0	(137)
Interest rate swaps | Cash Flow Hedging | Designated as Hedges
Derivative [Line Items]
Notional	4,978,500	7,854,700
Fair Value	39,986	44,618
Asset	39,986	45,551
Liability	0	(933)
Interest rate cap agreements
Derivative [Line Items]
Notional	11,900,578	9,463,935
Fair Value	90,313	76,269
Asset	116,568	76,269
Liability	(26,255)	0
Options for interest rate cap agreements
Derivative [Line Items]
Notional	11,900,578	9,463,935
Fair Value	(90,259)	(76,281)
Asset	26,304	0
Liability	$ (116,563)	(76,281)
Total return settlement
Derivative [Line Items]
Notional		658,471
Fair Value		(30,618)
Asset		0
Liability		$ (30,618)

Derivative Financial Instrume69

Derivative Financial Instruments - Additional Information (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Estimated unrealized gains to be reclassified from AOCI to interest expense in next 12 months	$ 12,648,000
Warrant
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Estimated fair value of warrant	$ 0	$ 0

Derivative Financial Instrume70

Derivative Financial Instruments - Offsetting of Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Offsetting of Financial Assets
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	$ 191,659	$ 123,895
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative assets	(111,431)	(22,100)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	80,228	101,795
Total derivatives not subject to a master netting arrangement or similar arrangement	0	0
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivative assets	191,659	123,895
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivative assets	80,228	101,795
Assets Presented in the Condensed Consolidated Balance Sheet, Total financial assets	191,659	123,895
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total financial assets	(111,431)	(22,100)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total financial assets	80,228	101,795
Offsetting of Financial Liabilities
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	142,818	77,351
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative liabilities	(52,075)	(77,351)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	90,743	0
Total derivatives not subject to a master netting arrangement or similar arrangement	0	30,618
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivative liabilities	142,818	107,969
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivative liabilities	90,743	30,618
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total financial liabilities	142,818	107,969
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Pledged, Total financial liabilities	(52,075)	(77,351)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total financial liabilities	90,743	30,618
Interest rate swaps | Santander and Affiliates
Offsetting of Financial Assets
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	6,042	5,372
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative assets	(336)	0
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	5,706	5,372
Offsetting of Financial Liabilities
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	0	546
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative liabilities	0	(546)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	0	0
Interest rate swaps | Third Party
Offsetting of Financial Assets
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	42,745	42,254
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative assets	(27,146)	(22,100)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	15,599	20,154
Offsetting of Financial Liabilities
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	0	524
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative liabilities	0	(524)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	0	0
Interest rate caps
Offsetting of Financial Assets
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivative assets	116,568	76,269
Offsetting of Financial Liabilities
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivative liabilities	26,255	0
Interest rate caps | Santander and Affiliates
Offsetting of Financial Assets
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	5,053	7,593
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative assets	(5,053)	0
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	0	7,593
Offsetting of Financial Liabilities
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	9,775
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative liabilities	0
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	9,775
Interest rate caps | Third Party
Offsetting of Financial Assets
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	111,515	68,676
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative assets	(78,896)	0
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	32,619	68,676
Offsetting of Financial Liabilities
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	16,480
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative liabilities	(372)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	16,108
Back to back | Santander and Affiliates
Offsetting of Financial Assets
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	9,775
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative assets	0
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	9,775
Offsetting of Financial Liabilities
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	5,053	7,593
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative liabilities	(5,053)	(7,593)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	0	0
Back to back | Third Party
Offsetting of Financial Assets
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	16,529
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative assets	0
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	16,529
Offsetting of Financial Liabilities
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	111,510	68,688
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received, Total derivative liabilities	(46,650)	(68,688)
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	$ 64,860	0
Total return settlement
Offsetting of Financial Assets
Assets Presented in the Condensed Consolidated Balance Sheet, Total derivative assets		0
Offsetting of Financial Liabilities
Total derivatives not subject to a master netting arrangement or similar arrangement		30,618
Liabilities Presented in the Condensed Consolidated Balance Sheet, Total derivative liabilities		$ 30,618

Derivative Financial Instrume71

Derivative Financial Instruments - Gross Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Designated as Hedges | Interest Rate Swaps
Derivative Instruments Gain Loss [Line Items]
Recognized in Earnings	$ (3,293)
Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss)	(882)
Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Income to Interest Expense	1,461
Designated as Hedges | Interest Rate Swaps | Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Recognized in Earnings	(2,061)	$ 293	$ (11,573)	$ 528
Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss)	(882)	27,764	4,233	(81,247)
Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Income to Interest Expense	1,461	(10,799)	(3,158)	(35,442)
Designated as Hedges | Interest Rate Swaps | Fair Value Hedging
Derivative Instruments Gain Loss [Line Items]
Recognized in Earnings	(1,232)
Gross Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Loss)	0
Gross Gains (Losses) Reclassified From Accumulated Other Comprehensive Income to Interest Expense	0
Not Designated As Hedges | Interest Expense
Derivative Instruments Gain Loss [Line Items]
Recognized in Earnings	90	(3,769)	90	2,428
Not Designated As Hedges | Operating Expense
Derivative Instruments Gain Loss [Line Items]
Recognized in Earnings	$ (2,723)	$ 343	$ (2,297)	$ (2,337)

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Thousands	1 Months Ended
	May 31, 2013	Sep. 30, 2017	Dec. 31, 2016
Other Assets [Line Items]
Other assets		$ 786,260	$ 785,410
Upfront fee	$ 150,000
Finance and other interest income amortization period	10 years
Vehicles
Other Assets [Line Items]
Other assets		206,076	257,382
Manufacturer subvention payments receivable
Other Assets [Line Items]
Other assets		102,383	161,447
Upfront fee
Other Assets [Line Items]
Other assets		83,750	95,000
Derivative assets at fair value
Other Assets [Line Items]
Other assets		170,789	110,930
Derivative - third party collateral
Other Assets [Line Items]
Other assets		120,711	75,089
Prepaids
Other Assets [Line Items]
Other assets		41,324	46,177
Accounts receivable
Other Assets [Line Items]
Other assets		28,758	22,480
Other
Other Assets [Line Items]
Other assets		$ 32,469	$ 16,905

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 78,385	$ 90,473	$ 239,819	$ 365,334
Effective tax rate	28.20%	29.80%	28.30%	34.10%
Undistributed earnings of SCI to be indefinitely reinvested outside the US	$ 156,700		$ 156,700
Unrecorded deferred tax liability related with undistributed net earnings	52,800		52,800
Operating Loss Carryforwards [Line Items]
Related party taxes receivable	467		467		$ 1,087
Tax Sharing Agreement
Operating Loss Carryforwards [Line Items]
Related party taxes receivable	$ 467		$ 467		$ 1,087

Commitments and Contingencies -

Commitments and Contingencies - Liabilities for Commitments and Contingencies (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Consumer arrangements
Loss Contingencies [Line Items]
Contingencies	$ 8,637,000	$ 0
Legal and regulatory proceedings
Loss Contingencies [Line Items]
Contingencies	17,800,000	39,200,000
Revenue-sharing and gain-sharing payments | Chrysler
Loss Contingencies [Line Items]
Commitments	13,270,000	10,134,000
Servicer performance fee | Bank of America
Loss Contingencies [Line Items]
Commitments	8,066,000	9,797,000
Loss-sharing payments | CBP
Loss Contingencies [Line Items]
Commitments	$ 4,874,000	$ 4,563,000

Commitments and Contingencies75

Commitments and Contingencies - Chrysler Agreement (Details) - Chrysler - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Other Commitments [Line Items]
Funding available for FCA retail financing	$ 4,500,000,000
Meeting specified escalating penetration rates, period	5 years
Minimum
Other Commitments [Line Items]
Funding available for dealer inventory financing	$ 5,000,000,000
Revenue-sharing and gain-sharing payments
Other Commitments [Line Items]
Amount accrued for the payments	$ 13,270,000	$ 10,134,000

Commitments and Contingencies76

Commitments and Contingencies - Agreement with Bank of America (Details) - Bank of America - USD ($)	9 Months Ended
	Sep. 30, 2017	Jan. 31, 2017	Dec. 31, 2016
Other Commitments [Line Items]
Commitment to sell loans		$ 300,000,000
Servicer performance payments due, period	6 years
Servicer performance fee
Other Commitments [Line Items]
Commitments	$ 8,066,000		$ 9,797,000

Commitments and Contingencies77

Commitments and Contingencies - Agreement with CBP (Details) - CBP - USD ($)	9 Months Ended
	Sep. 30, 2017	May 01, 2017	Dec. 31, 2016
Other Commitments [Line Items]
Loans servicing, loss-sharing payment percentage	0.50%
Loss-sharing payments
Other Commitments [Line Items]
Commitments	$ 4,874,000		$ 4,563,000
Chrysler
Other Commitments [Line Items]
Maximum purchase amount committed		$ 200,000,000
Minimum purchase amount committed		$ 50,000,000

Commitments and Contingencies78

Commitments and Contingencies - Other Contingencies (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Consumer arrangements
Other Commitments [Line Items]
Accrual for miscellaneous contingencies	$ 8,637,000	$ 0

Commitments and Contingencies79

Commitments and Contingencies - Legal and Regulatory Proceedings (Details) - USD ($) $ in Thousands	Feb. 25, 2015	Sep. 30, 2017	Dec. 31, 2016
Violation of SCRA
Loss Contingencies [Line Items]
SCRA compliance monitoring period	5 years
Aggregate Legal and Regulatory Liabilities
Loss Contingencies [Line Items]
Contingencies		$ 17,800	$ 39,200
Maximum possible loss		$ 18,000
Civil Fine | Violation of SCRA
Loss Contingencies [Line Items]
Civil fine, amount	$ 55
Civil Fine to Affected Service Members | Violation of SCRA | Minimum
Loss Contingencies [Line Items]
Civil fine, amount	9,360
Lost Equity for Each Repossession by SCUSA | Violation of SCRA
Loss Contingencies [Line Items]
Civil fine, amount	10
SCUSA Sought to Collect Repossession-related Fees | Violation of SCRA
Loss Contingencies [Line Items]
Civil fine, amount	$ 5

Commitments and Contingencies80

Commitments and Contingencies - Agreements (Details) - USD ($)	Jun. 29, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2015	Dec. 31, 2016	Nov. 13, 2015	May 09, 2015	Mar. 31, 2015	Jun. 30, 2014
Other Commitments [Line Items]
Purchase obligation		$ 12,865,000		$ 12,865,000			$ 12,634,000
Purchase commitment, repurchase rate (up to)						9.99%
Retainer rate (up to) upon exercise of repurchase right						20.00%
Servicing fees adjustment		0	$ 0	0	$ (836,000)
Repurchase requests outstanding		0		0
Commitment to sell charged off loan receivables in bankruptcy sale	$ 275,000,000							$ 350,000,000		$ 200,000,000
Sales subject to market price check	$ 275,000,000
Remaining aggregate commitment to sell charged off loan receivables		108,403,000		108,403,000			166,167,000
SBNA
Other Commitments [Line Items]
Indemnification of leases									$ 48,226,000
Credit loss indemnification of leases		22,000		22,000			11,329,000				$ 48,226,000
Indemnification liability		$ 2,983,000		$ 2,983,000			$ 2,691,000

Commitments and Contingencies81

Commitments and Contingencies - Employment Agreements (Details) $ in Thousands	Sep. 30, 2017USD ($)
Chairman and CEO | Modified Stock Option
Other Commitments [Line Items]
Liability for payments and benefits due under Separation Agreement	$ 115,139

Commitments and Contingencies82

Commitments and Contingencies - Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Lease expense	$ 2,773	$ 2,749	$ 8,240	$ 8,588

Commitments and Contingencies83

Commitments and Contingencies - Future Minimum Lease Commitments (Details) $ in Thousands	Sep. 30, 2017USD ($)
Years ended December 31,
2,017	$ 2,992
2,018	12,645
2,019	12,773
2,020	13,035
2,021	12,910
Thereafter	56,794
Total	$ 111,149

Related-Party Transactions - In

Related-Party Transactions - Interest Expense and Accrued Interest (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Santander
Related Party Transaction [Line Items]
Interest expense for affiliate lines/letters of credit	$ 8,158	$ 16,404	$ 46,624	$ 52,800
Accrued interest for affiliate lines/letters of credit	1,409		1,409		$ 6,297
SHUSA
Related Party Transaction [Line Items]
Interest expense for affiliate lines/letters of credit	26,211	$ 6,023	59,105	$ 14,892
Accrued interest for affiliate lines/letters of credit	$ 15,192		$ 15,192		$ 1,737

Related-Party Transactions - Cr

Related-Party Transactions - Credit Facilities (Details) - Santander - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Related Party Transaction [Line Items]
Guarantee fee, basis spread (as a percent)	0.125%
Guarantee fee expense		$ 1,672	$ 1,616	$ 4,620	$ 4,783
Guarantee fee payable		$ 6,239		$ 6,239		$ 1,620

Related-Party Transactions - De

Related-Party Transactions - Derivatives (Details) - Santander and Affiliates - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Related Party Transaction [Line Items]
Outstanding notional amount	$ 4,372,800		$ 4,372,800		$ 7,259,400
Collateral coverage on derivative liabilities	9,169		9,169		$ 15,092
Derivative instrument interest expenses	$ 1,227	$ 1,932	$ 1,443	$ 16,098

Related-Party Transactions - Or

Related-Party Transactions - Originations (Details) - SBNA - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Related Party Transaction [Line Items]
Servicing fee expense	$ 21,000		$ 77,000
Servicing fees payable	16,000		16,000		$ 21,000
Referral fee			$ 9,000,000
Referral fee, amortization period			10 years
Unamortized fee balance	5,175,000		$ 5,175,000		5,850,000
Income related to referral fee	225,000	$ 225,000	675,000	$ 675,000
Servicing fee income on receivables sold	1,066,000	1,742,000	4,115,000	5,741,000
Receivables Acquired with Deteriorated Credit Quality
Related Party Transaction [Line Items]
Servicing fee expense	231,000
Gain from sale of receivables acquired with deteriorated credit quality	35,927,000
Dealer Loan Portfolio
Related Party Transaction [Line Items]
Relationship management fee income	0	0	0	419,000
Due from related parties	0		0		0
Origination Fee Income
Related Party Transaction [Line Items]
Revenue from related parties	246,000	1,009,000	1,213,000	2,292,000
Renewal Fee Income
Related Party Transaction [Line Items]
Revenue from related parties	357,000	158,000	935,000	271,000
Origination and Renewal Fees
Related Party Transaction [Line Items]
Due from related parties	237,000		237,000		552,000
Loan Origination on Sales of Floorplan Inventory
Related Party Transaction [Line Items]
Due to related parties	3,482,000		3,482,000		$ 2,761,000
Serviced Auto Loan and Retail Installment
Related Party Transaction [Line Items]
Servicing fee income on receivables sold	887,000	$ 1,140,000	2,658,000	$ 4,457,000
Fee for Payments Made at Retail Branch Locations
Related Party Transaction [Line Items]
Expenses from transaction with related party	$ 62,000		$ 178,000

Related-Party Transactions - 88

Related-Party Transactions - Information on Serviced Auto Loan and Retail Installment Contract Portfolio (Details) - SBNA - Serviced Auto Loan and Retail Installment - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Total serviced portfolio	$ 427,168	$ 531,117
Cash collections due to owner	13,425	21,427
Servicing fees receivable	$ 983	$ 1,123

Related-Party Transactions - 89

Related-Party Transactions - Information on Serviced Receivables for SBNA (Details) - SBNA - Serviced Receivables $ in Thousands	Sep. 30, 2017USD ($)
Related Party Transaction [Line Items]
Total serviced portfolio	$ 129,727
Cash collections due to owner	273
Servicing fees receivable	$ 110

Related-Party Transactions - Fl

Related-Party Transactions - Flow Agreements (Details) - SBNA - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Jun. 30, 2014
Related Party Transaction [Line Items]
Servicing fee income on receivables sold	$ 1,066,000	$ 1,742,000	$ 4,115,000	$ 5,741,000
Credit loss indemnification of leases	22,000		22,000		$ 11,329,000	$ 48,226,000
Indemnification expense	0	$ 0	0	$ 0
Balance of collateral on lease origination	2,713,000		2,713,000		2,706,000
Indemnification liability	$ 2,983,000		$ 2,983,000		$ 2,691,000

Related-Party Transactions - 91

Related-Party Transactions - Information on Consumer Vehicle Lease Portfolio (Details) - SBNA - Consumer Vehicle Lease - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Total serviced portfolio	$ 459,524	$ 1,297,317
Cash collections due to owner	0	78
Servicing fees receivable	2,020	926
Revenue share reimbursement receivable	$ 3,365	$ 612

Related-Party Transactions - Se

Related-Party Transactions - Securitizations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Related Party Transaction [Line Items]
Servicing fee income	$ 2,739	$ 4,049	$ 8,627	$ 13,180
Santander
Related Party Transaction [Line Items]
Sale of loans securitized	1,347,010		1,236,331
Loss from sale of securitized loans	6,846		13,026
Servicing fee income	529		1,419
Due to related parties	$ 14,083		$ 14,083

Related-Party Transactions - Em

Related-Party Transactions - Employment Agreements (Details) - USD ($)	Apr. 17, 2017	Jul. 02, 2015	Sep. 30, 2017	Aug. 31, 2016	Jul. 16, 2014
Related Party Transaction [Line Items]
Committed amount			$ 3,000,000,000
Shareholders Agreement | Affiliates | DDFS LLC
Related Party Transaction [Line Items]
Call transaction, average share price (usd per share)		$ 26.83		$ 26.17
Number of consecutive trading days		10 days
Call Transaction | Affiliates | DDFS LLC | LIBOR
Related Party Transaction [Line Items]
Call transaction, basis spread on variable rate			1.00%
Call Transaction | Affiliates | DDFS LLC | SHUSA
Related Party Transaction [Line Items]
Number of shares called by warrant (in shares)		34,598,506
Proceeds payable upon consummation of call transaction			$ 928,278,000
Amended and Restated Loan Agreement | Affiliates | DDFS LLC | SHUSA
Related Party Transaction [Line Items]
Committed amount					$ 300,000,000
Notes payable	$ 290,000,000
Minimum pledged collateral to outstanding principal requirement (less than) (percentage)			1.5
Minimum pledged collateral to outstanding principal requirement default, repayment of outstanding principal (at least) (percentage)			200.00%
Amended and Restated Loan Agreement | Affiliates | DDFS LLC | SHUSA | Base Rate
Related Party Transaction [Line Items]
Basis spread on variable rate (as a percent)	2.00%
Amended and Restated Loan Agreement | Affiliates | DDFS LLC | SHUSA | Federal Funds Rate
Related Party Transaction [Line Items]
Basis spread on variable rate (as a percent)	0.50%
Pledge Agreement | Affiliates | DDFS LLC | SHUSA
Related Party Transaction [Line Items]
Common stock pledged as collateral (in shares)			29,598,506
Chairman and CEO | Modified Stock Option
Related Party Transaction [Line Items]
Compensation liability			$ 115,139,000
Chairman and CEO | Separation Agreement
Related Party Transaction [Line Items]
Consulting agreement term, period			12 months

Related-Party Transactions - Ot

Related-Party Transactions - Other Related Party Transactions (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)ft²	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)ft²	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Related Party Transaction [Line Items]
Lease expense	$ 2,773,000	$ 2,749,000	$ 8,240,000	$ 8,588,000
Future minimum payment of lease	111,149,000		111,149,000
Restricted cash	2,559,246,000		2,559,246,000		$ 2,757,299,000
Cost method investment	$ 0		$ 0
Chairman and CEO, President and CFO and Board Member
Related Party Transaction [Line Items]
Area of leased property (in square foot) | ft²	373,000		373,000
Lease expense	$ 1,275,000	1,361,000	$ 3,836,000	3,832,000
Lease term			9 years
Future minimum payment of lease	$ 64,050,000		$ 64,050,000
SBNA | Sublease of Corporate Office Space
Related Party Transaction [Line Items]
Area of property (in square foot) | ft²	13,000		13,000
Sublease revenue	$ 41,000	41,000	$ 122,000	122,000
Subsidiaries | Banco Santander Puerto Rico | Demand Deposits
Related Party Transaction [Line Items]
Restricted cash	72,170,000		72,170,000		$ 98,836,000
Affiliates | SIS | Secured Debt | CCART 2013-A Trust
Related Party Transaction [Line Items]
Debt, principal						$ 2,000,000
Affiliates | Fees Paid for Co-Management of Certain Securitizations | SIS
Related Party Transaction [Line Items]
Expenses from transaction with related party	100,000	0	1,259,000	1,049,000
Produban Servicios Informaticos Generales S.L
Related Party Transaction [Line Items]
Expenses incurred	0	$ 16,000	0	$ 64,000
Santander | Procurement Services
Related Party Transaction [Line Items]
Expenses from transaction with related party	$ 142,000		$ 354,000

Computation of Basic and Dilu95

Computation of Basic and Diluted Earnings per Common Share - Additional Information (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Awards excluded from computation of earnings per share (in shares)	778,019	1,933,659	778,019	1,933,659
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Awards excluded from computation of earnings per share (in shares)	0	0	620,625	0

Computation of Basic and Dilu96

Computation of Basic and Diluted Earnings per Common Share - Summary of Computation of Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings per common share
Net income	$ 199,388	$ 213,547	$ 607,490	$ 705,191
Weighted average number of common shares outstanding before restricted participating shares	359,496,000	357,994,000	359,274,000	357,830,000
Weighted average number of participating restricted common shares outstanding	123,000	350,000	123,000	350,000
Weighted average number of common shares outstanding	359,619,083	358,343,781	359,397,063	358,179,618
Earnings per common share (in usd per share)	$ 0.55	$ 0.60	$ 1.69	$ 1.97
Earnings per common share - assuming dilution
Net income	$ 199,388	$ 213,547	$ 607,490	$ 705,191
Weighted average number of common shares outstanding	359,619,083	358,343,781	359,397,063	358,179,618
Effect of employee stock-based awards (in shares)	841,000	1,743,000	672,000	1,455,000
Weighted average number of common shares outstanding - assuming dilution	360,460,353	360,087,749	360,069,449	359,635,034
Earnings per common share - assuming dilution (in usd per share)	$ 0.55	$ 0.59	$ 1.69	$ 1.96

Fair Value of Financial Instr97

Fair Value of Financial Instruments - Summary of Fair Value Estimates, Methods and Assumptions (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Level 1
Assets:
Cash and cash equivalents	$ 397,311	$ 160,180
Finance receivables held for investment, net	0	0
Restricted cash	2,559,246	2,757,299
Total	2,956,557	2,917,479
Liabilities:
Notes payable — credit facilities	0	0
Notes payable — secured structured financings	0	0
Notes payable — related party	0	0
Total	0	0
Level 2
Assets:
Cash and cash equivalents	0	0
Finance receivables held for investment, net	0	0
Restricted cash	0	0
Total	0	0
Liabilities:
Notes payable — credit facilities	0	0
Notes payable — secured structured financings	13,889,699	13,530,045
Notes payable — related party	0	0
Total	13,889,699	13,530,045
Level 3
Assets:
Cash and cash equivalents	0	0
Finance receivables held for investment, net	23,590,105	24,630,599
Restricted cash	0	0
Total	23,590,105	24,630,599
Liabilities:
Notes payable — credit facilities	4,965,888	6,739,817
Notes payable — secured structured financings	9,652,275	8,182,646
Notes payable — related party	2,369,850	2,975,000
Total	16,988,013	17,897,463
Carrying Value
Assets:
Cash and cash equivalents	397,311	160,180
Finance receivables held for investment, net	22,540,414	23,456,506
Restricted cash	2,559,246	2,757,299
Total	25,496,971	26,373,985
Liabilities:
Notes payable — credit facilities	4,965,888	6,739,817
Notes payable — secured structured financings	23,258,363	21,608,889
Notes payable — related party	2,369,850	2,975,000
Total	30,594,101	31,323,706
Estimated Fair Value
Assets:
Cash and cash equivalents	397,311	160,180
Finance receivables held for investment, net	23,590,105	24,630,599
Restricted cash	2,559,246	2,757,299
Total	26,546,662	27,548,078
Liabilities:
Notes payable — credit facilities	4,965,888	6,739,817
Notes payable — secured structured financings	23,541,974	21,712,691
Notes payable — related party	2,369,850	2,975,000
Total	$ 30,877,712	$ 31,427,508

Fair Value of Financial Instr98

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Retail installment contracts acquired individually	$ 24,799	$ 24,495
Interest Rate Caps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	111,515	68,676
Due from affiliates	5,053	7,593
Other liabilities	16,480
Due to affiliates	9,775
Interest Rate Swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	7,364	783
Due from affiliates	1,437	1,292
Other liabilities		42
Due to affiliates		95
Interest Rate Swaps | Cash Flow Hedging
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	35,381	41,471
Due from affiliates	4,605	4,080
Other liabilities		482
Due to affiliates		451
Trading Options for Interest Rate Caps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	16,529
Due from affiliates	9,775
Other liabilities	111,510	68,688
Due to affiliates	5,053	7,593
Total Return Settlement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities		30,618
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Retail installment contracts acquired individually	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest Rate Caps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	0	0
Due from affiliates	0	0
Other liabilities	0
Due to affiliates	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest Rate Swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	0	0
Due from affiliates	0	0
Other liabilities		0
Due to affiliates		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest Rate Swaps | Cash Flow Hedging
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	0	0
Due from affiliates	0	0
Other liabilities		0
Due to affiliates		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Trading Options for Interest Rate Caps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	0
Due from affiliates	0
Other liabilities	0	0
Due to affiliates	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Total Return Settlement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities		0
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Retail installment contracts acquired individually	0	0
Significant Other Observable Inputs (Level 2) | Interest Rate Caps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	111,515	68,676
Due from affiliates	5,053	7,593
Other liabilities	16,480
Due to affiliates	9,775
Significant Other Observable Inputs (Level 2) | Interest Rate Swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	7,364	783
Due from affiliates	1,437	1,292
Other liabilities		42
Due to affiliates		95
Significant Other Observable Inputs (Level 2) | Interest Rate Swaps | Cash Flow Hedging
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	35,381	41,471
Due from affiliates	4,605	4,080
Other liabilities		482
Due to affiliates		451
Significant Other Observable Inputs (Level 2) | Trading Options for Interest Rate Caps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	16,529
Due from affiliates	9,775
Other liabilities	111,510	68,688
Due to affiliates	5,053	7,593
Significant Other Observable Inputs (Level 2) | Total Return Settlement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities		0
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Retail installment contracts acquired individually	24,799	24,495
Significant Unobservable Inputs (Level 3) | Interest Rate Caps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	0	0
Due from affiliates	0	0
Other liabilities	0
Due to affiliates	0
Significant Unobservable Inputs (Level 3) | Interest Rate Swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	0	0
Due from affiliates	0	0
Other liabilities		0
Due to affiliates		0
Significant Unobservable Inputs (Level 3) | Interest Rate Swaps | Cash Flow Hedging
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	0	0
Due from affiliates	0	0
Other liabilities		0
Due to affiliates		0
Significant Unobservable Inputs (Level 3) | Trading Options for Interest Rate Caps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	0
Due from affiliates	0
Other liabilities	0	0
Due to affiliates	$ 0	0
Significant Unobservable Inputs (Level 3) | Total Return Settlement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities		$ 30,618

Fair Value of Financial Instr99

Fair Value of Financial Instruments - Change in Level 3 Balances (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Financial Instruments, Liabilities | Total Return Settlement
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance — beginning of period	$ 31,123	$ 53,543	$ 30,618	$ 53,432
(Gains)/losses recognized in earnings	0	(343)	505	2,337
Settlements	(31,123)	(23,336)	(31,123)	(25,905)
Balance — end of period	0	29,864	0	29,864
Retail Installment Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance — beginning of period	30,489	12,602	24,495	6,770
Additions / issuances	0	11,838	19,727	23,712
Net collection activities	(6,517)	(5,740)	(23,640)	(11,782)
Gains recognized in earnings	827	0	4,217	0
Balance — end of period	$ 24,799	$ 18,700	$ 24,799	$ 18,700

Fair Value of Financial Inst100

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Vehicles
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	$ 206,076	$ 257,382
Lower of cost or fair value expense	0	0
Vehicles | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	0	0
Vehicles | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	206,076	257,382
Vehicles | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	0	0
Personal loans held for sale
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	929,549	1,077,600
Lower of cost or fair value expense	237,980	414,703
Personal loans held for sale | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	0	0
Personal loans held for sale | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	0	0
Personal loans held for sale | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	929,549	1,077,600
Retail installment contracts held for sale
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	845,910	1,045,815
Lower of cost or fair value expense	8,542	8,913
Retail installment contracts held for sale | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	0	0
Retail installment contracts held for sale | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	0	0
Retail installment contracts held for sale | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	845,910	$ 1,045,815
Auto loans impaired due to bankruptcy
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	101,990
Lower of cost or fair value expense	65,584
Auto loans impaired due to bankruptcy | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	0
Auto loans impaired due to bankruptcy | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	101,990
Auto loans impaired due to bankruptcy | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value, nonrecurring	$ 0

Fair Value of Financial Inst101

Fair Value of Financial Instruments - Quantitative Information for Assets and Liabilities (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Discounted Cash Flow | Retail installment contracts held for investment
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Financial Assets	$ 24,799
Prepayment Rate	6.00%
Discounted Cash Flow | Retail installment contracts held for investment | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rate	9.00%
Default Rate	18.00%
Discounted Cash Flow | Retail installment contracts held for investment | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rate	9.50%
Default Rate	22.00%
Discounted Cash Flow | Retail installment contracts held for sale
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Financial Assets	$ 845,910
Prepayment Rate	17.80%
Discounted Cash Flow | Retail installment contracts held for sale | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rate	3.00%
Default Rate	3.80%
Discounted Cash Flow | Retail installment contracts held for sale | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rate	8.00%
Default Rate	8.30%
Market / Income Approach | Personal loans held for sale
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Financial Assets	$ 929,549
Market / Income Approach | Personal loans held for sale | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rate	15.00%
Default Rate	30.00%
Market / Income Approach | Personal loans held for sale | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount Rate	30.00%
Default Rate	40.00%

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2013	Dec. 31, 2011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued	359,873,905		359,873,905		359,002,145
Expiration period			10 years
Chairman and CEO | Separation Agreement
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Regulatory approval period			60 days
MEP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares stock awards available for grant							29,000,000
Omnibus Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares stock awards available for grant	583,890		583,890
Common stock, shares issued						5,192,640
Stock vesting period			5 years
Employee benefits and share-based compensation	$ (220)	$ 182	$ 139	$ 543
Omnibus Incentive Plan | RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award holding period			1 year
Omnibus Incentive Plan | RSUs | Vesting One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock vesting period			3 years
Omnibus Incentive Plan | RSUs | Vesting Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock vesting period			5 years
Omnibus Incentive Plan | RSUs | Certain Officers | Vesting One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock vesting period			3 years
Omnibus Incentive Plan | RSUs | Certain Officers | Vesting Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock vesting period			5 years

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Stock Options and Related Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Shares
Options outstanding, Beginning balance (in shares)	4,295,830,000
Granted (in shares)	0
Exercised (in shares)	(594,110,000)
Expired (in shares)	(142,795,000)
Forfeited (in shares)	(653,258,000)
Options outstanding, Ending balance (in shares)	2,905,667,000	4,295,830,000
Options exercisable, Ending balance (in shares)	2,641,214,000
Weighted Average Exercise Price
Options outstanding, Beginning balance (in usd per share)	$ 12.70
Granted (in usd per share)	0
Exercised (in usd per share)	9.40
Expired (in usd per share)	12.64
Forfeited (in usd per share)	14.57
Options outstanding, Ending balance (in usd per share)	12.96	$ 12.70
Options exercisable, Weighted average exercise price, Ending balance (in usd per share)	$ 12.15
Weighted Average Remaining Contractual Term (Years)
Options outstanding, Weighted average remaining contractual term (Years)	5 years	5 years 7 months 6 days
Options exercisable, Weighted average remaining contractual term (Years)	4 years 9 months 18 days
Aggregate Intrinsic Value
Options outstanding, Aggregate intrinsic value	$ 6,999	$ 12,982
Exercised Aggregate intrinsic value	2,503
Options exercisable, Aggregate intrinsic value	$ 8,517

Shareholders' Equity - Treasury

Shareholders' Equity - Treasury Stock (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2013	Dec. 31, 2016
Equity [Abstract]
Number of shares withheld to cover income taxes related to vesting of RSUs	123,507		94,595
Treasury stock value	$ 2,004		$ 1,600
Number of shares repurchased prior to the IPO		3,154
Number of shares withheld for income tax	120,353

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Increase (Decrease) in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance			$ 5,238,619	$ 4,432,549
Ending balance	$ 5,885,234	$ 5,117,657	5,885,234	5,117,657
Unrealized Gains (Losses) on Cash Flow Hedges
Increase (Decrease) in Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	27,860	(50,766)	28,259	2,125
Other comprehensive gain (loss) before reclassifications	1,061	17,391	(3,062)	(50,949)
Amounts reclassified out of accumulated other comprehensive income	(1,440)	6,777	2,284	22,226
Ending balance	$ 27,481	$ (26,598)	$ 27,481	$ (26,598)

Shareholders' Equity - Reclassi

Shareholders' Equity - Reclassification of Amounts Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Settlements of derivatives	$ 250,674	$ 207,175	$ 711,134	$ 590,504
Tax expense (benefit)	78,385	90,473	239,819	365,334
Net of tax	(199,388)	(213,547)	(607,490)	(705,191)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Settlements of derivatives	(1,461)	10,799	3,158	35,442
Tax expense (benefit)	21	(4,022)	(874)	(13,216)
Net of tax	$ (1,440)	$ 6,777	$ 2,284	$ 22,226

Shareholders' Equity - Dividend

Shareholders' Equity - Dividends (Details) - $ / shares	Nov. 17, 2017	Oct. 25, 2017	Jun. 30, 2018	Mar. 31, 2018
Scenario, Forecast
Dividends Payable [Line Items]
Dividends to be paid, per share (in usd per share)			$ 0.05	$ 0.05
Subsequent Event
Dividends Payable [Line Items]
Dividends declared, per share (in usd per share)		$ 0.03
Dividends to be paid, per share (in usd per share)	$ 0.03

Investment Losses, Net - Schedu

Investment Losses, Net - Schedule of Investment Gains (Losses), Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Gain (loss) on sale of loans and leases	$ 29,974	$ (3,765)	$ 16,913	$ (1,418)
Lower of cost or market adjustments	(84,718)	(97,532)	(246,522)	(266,506)
Other gains, losses and impairments, net	2,152	(4,753)	1,096	(8,491)
Investment losses, net	$ (52,592)	$ (106,050)	$ (228,513)	$ (276,415)

Investment Losses, Net - Additi

Investment Losses, Net - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Lower of cost or market adjustment, customer default activity	$ 112,055	$ 114,477	$ 336,413	$ 312,993
Lower of cost or market adjustment	$ 27,337	$ 18,831	$ 89,891	$ 48,373