Santander Holdings USA (SOV) 10-K 15 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 28, 2019	Jun. 30, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	Santander Holdings USA, Inc.
Entity Central Index Key	0000811830
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Current Fiscal Year End	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 0
Entity Common Stock, Shares Outstanding		530,391,043

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents		$ 7,790,593	$ 6,519,967
Investment securities:
Available-for-sale (AFS) at fair value		11,632,987	14,413,183
Held-to-maturity (HTM) (fair value of $2,676,049 and $1,773,938 as of December 31, 2018 and December 31, 2017, respectively)		2,750,680	1,799,808
Other investments (includes Trading securities of $10 and $1 as of December 31, 2018 and December 31, 2017, respectively)		805,357	658,864
Loans held-for-investment (LHFI)	[1],[2]	87,045,868	80,790,681
Allowance for loan and lease losses (ALLL)	[2]	(3,897,130)	(3,994,887)
Net LHFI		83,148,738	76,795,794
Loans held-for-sale (LHFS)	[3]	1,283,278	2,522,486
Premises and equipment, net	[4]	805,940	849,061
Operating lease assets, net	[2],[5]	14,078,793	10,474,308
Goodwill		4,444,389	4,444,389
Intangible assets, net		475,193	535,753
Bank-owned life insurance (BOLI)		1,833,290	1,795,700
Restricted cash	[2]	2,931,711	3,818,807
Other assets	[2],[6]	3,653,336	3,646,405
TOTAL ASSETS		135,634,285	128,274,525
LIABILITIES
Accrued expenses and payables		3,035,848	2,825,263
Deposits and other customer accounts		61,511,380	60,831,103
Borrowings and other debt obligations	[2]	44,953,784	39,003,313
Advance payments by borrowers for taxes and insurance		160,728	159,321
Deferred tax liabilities, net		1,212,538	965,290
Other liabilities	[2]	912,775	799,403
TOTAL LIABILITIES		111,787,053	104,583,693
Commitments and Contingencies (Note 16)
STOCKHOLDER'S EQUITY
Preferred stock (no par value; $25,000 liquidation preference; 7,500,000 shares authorized; zero and 8,000 shares outstanding at December 31, 2018 and December 31, 2017, respectively)		0	195,445
Common stock and paid-in capital (no par value; 800,000,000 shares authorized; 530,391,043 shares outstanding at both December 31, 2018 and December 31, 2017)		17,859,304	17,723,010
Accumulated other comprehensive loss		(321,652)	(198,431)
Retained earnings		3,783,405	3,453,957
TOTAL SANTANDER HOLDINGS USA, INC. (SHUSA) STOCKHOLDER'S EQUITY		21,321,057	21,173,981
Noncontrolling interest (NCI)		2,526,175	2,516,851
TOTAL STOCKHOLDER'S EQUITY		23,847,232	23,690,832
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY		$ 135,634,285	$ 128,274,525
[1]	LHFI includes $126.3 million and $186.5 million of loans recorded at fair value at December 31, 2018 and December 31, 2017, respectively.
[2]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.
[3]	Includes $209.5 million and $197.7 million of loans recorded at the fair value option ("FVO") at December 31, 2018 and December 31, 2017, respectively.
[4]	Net of accumulated depreciation of $1.4 billion and $1.4 billion at December 31, 2018 and December 31, 2017, respectively.
[5]	Net of accumulated depreciation of $3.5 billion and $3.4 billion at December 31, 2018 and December 31, 2017, respectively.
[6]	Includes mortgage servicing rights ("MSRs") of $149.7 million and $146.0 million at December 31, 2018 and December 31, 2017, respectively, for which the Company has elected the FVO. See Note 16 to these Consolidated Financial Statements for additional information.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)		Dec. 31, 2018	Dec. 31, 2017
ASSETS
Held-to-maturity securities, fair value		$ 2,676,049,000	$ 1,773,938,000
Trading securities		10,000	1,000
Loans held for investment, fair value		126,300,000	186,500,000
Accumulated depreciation		1,395,272,000	1,431,655,000
LHFS	[1]	1,283,278,000	2,522,486,000
Operating lease assets, net	[2],[3]	14,078,793,000	10,474,308,000
Restricted cash	[3]	2,931,711,000	3,818,807,000
Other assets	[3],[4]	3,653,336,000	3,646,405,000
Other liabilities	[3]	912,775,000	799,403,000
Operating leases, accumulated depreciation		$ (3,500,000,000)	$ (3,400,000,000)
STOCKHOLDER'S EQUITY
Preferred stock, no par value (in usd per share)
Preferred stock, liquidation preference		$ 25,000	$ 25,000
Preferred stock, shares authorized (in shares)		7,500,000	7,500,000
Preferred stock, shares outstanding (in shares)		0	8,000
Common stock, no par value (in usd per share)
Common stock, shares authorized (in shares)		800,000,000	800,000,000
Common stock, shares outstanding (in shares)		530,391,043	530,391,043
VIE, Primary Beneficiary
ASSETS
LHFS		$ 24,098,638,000	$ 22,679,381,000
Operating lease assets, net		13,978,855,000	10,160,327,000
Restricted cash		1,582,158,000	1,995,557,000
Other assets		685,383,000	747,101,000
Borrowings and other debt obligations		31,949,839,000	28,469,999,000
Other liabilities		122,010,000	197,969,000
Residential mortgages
ASSETS
Mortgage servicing rights		149,700,000	146,000,000
Recurring
ASSETS
Trading securities		10,000	1,000
Loans held for investment, fair value		126,312,000	186,471,000
Loans held for sale		209,506,000	197,691,000
Mortgage servicing rights		$ 149,660,000	$ 145,993,000
[1]	Includes $209.5 million and $197.7 million of loans recorded at the fair value option ("FVO") at December 31, 2018 and December 31, 2017, respectively.
[2]	Net of accumulated depreciation of $3.5 billion and $3.4 billion at December 31, 2018 and December 31, 2017, respectively.
[3]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.
[4]	Includes mortgage servicing rights ("MSRs") of $149.7 million and $146.0 million at December 31, 2018 and December 31, 2017, respectively, for which the Company has elected the FVO. See Note 16 to these Consolidated Financial Statements for additional information.

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
INTEREST INCOME:
Loans		$ 7,546,376	$ 7,377,345	$ 7,611,347
Interest-earning deposits		137,753	86,205	57,361
Investment securities:
AFS		297,557	352,601	284,796
HTM		68,525	38,609	3,526
Other investments		18,842	21,319	32,721
TOTAL INTEREST INCOME		8,069,053	7,876,079	7,989,751
INTEREST EXPENSE:
Deposits and other customer accounts		389,128	241,044	277,022
Borrowings and other debt obligations		1,335,075	1,211,085	1,148,037
TOTAL INTEREST EXPENSE		1,724,203	1,452,129	1,425,059
NET INTEREST INCOME		6,344,850	6,423,950	6,564,692
Provision for credit losses		2,339,898	2,759,944	2,979,725
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES		4,004,952	3,664,006	3,584,967
NON-INTEREST INCOME:
Consumer and commercial fees		568,147	616,438	689,839
Lease income		2,375,596	2,017,775	1,839,307
Miscellaneous income, net	[1],[2]	307,282	269,484	169,056
TOTAL FEES AND OTHER INCOME		3,251,025	2,903,697	2,698,202
Other-than-temporary impairment (OTTI) recognized in earnings		0	0	44
Net (losses)/gains on sale of investment securities		(6,717)	(2,444)	57,547
Net (losses)/gains recognized in earnings		(6,717)	(2,444)	57,503
TOTAL NON-INTEREST INCOME		3,244,308	2,901,253	2,755,705
GENERAL, ADMINISTRATIVE AND OTHER EXPENSES:
Compensation and benefits		1,799,369	1,895,326	1,719,645
Occupancy and equipment expenses		659,789	669,113	618,597
Technology, outside service, and marketing expense		590,249	581,164	644,079
Loan expense		384,899	386,468	415,267
Lease expense		1,789,030	1,553,096	1,305,712
Other expenses		608,989	679,157	682,894
TOTAL GENERAL, ADMINISTRATIVE AND OTHER EXPENSES		5,832,325	5,764,324	5,386,194
INCOME BEFORE INCOME TAX PROVISION		1,416,935	800,935	954,478
Income tax provision/(benefit)		425,900	(157,040)	313,715
NET INCOME INCLUDING NCI		991,035	957,975	640,763
LESS: NET INCOME ATTRIBUTABLE TO NCI		283,631	405,625	277,879
NET INCOME ATTRIBUTABLE TO SHUSA		$ 707,404	$ 552,350	$ 362,884
[1]	Includes equity investment (income)/expense, net.
[2]	Includes impact of $382.3 million, $386.4 million, and $424.1 million in 2018, 2017, and 2016 of lower of cost or market adjustments on a portion of the Company's LHFS portfolio.

CONSOLIDATED STATEMENTS OF OP_2

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Lower of cost or market adjustment on a portion of unsecured loan portfolio held for sale	$ 382.3	$ 386.4	$ 424.1

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
NET INCOME INCLUDING NCI		$ 991,035		$ 957,975		$ 640,763
OTHER COMPREHENSIVE INCOME, NET OF TAX
Net unrealized (losses) / gains on cash flow hedge derivative financial instruments, net of tax	[1],[2]	(3,796)		337		9,856
Net unrealized (losses) / gains on AFS and HTM investment securities, net of tax		(80,891)	[2]	(9,744)	[2]	(34,812)
Pension and post-retirement actuarial gains / (losses), net of tax	[2]	560		4,184		2,278
TOTAL OTHER COMPREHENSIVE (LOSS) / GAIN, NET OF TAX		(84,127)		(5,223)		(22,678)
COMPREHENSIVE INCOME		906,908		952,752		618,085
NET INCOME ATTRIBUTABLE TO NCI		283,631		405,625		277,879
COMPREHENSIVE INCOME ATTRIBUTABLE TO SHUSA		$ 623,277		$ 547,127		$ 340,206
[1]	Excludes $3.1 million, $6.0 million, $10.8 million of other comprehensive income attributable to NCI for the years ended December 31, 2018, 2017, 2016, respectively.
[2]	Excludes $39.1 million impact of other comprehensive income reclassified to Retained earnings as a result of the adoption of Accounting Standards Update ("ASU") 2018-02.

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Other comprehensive income attributable to noncontrolling interest	$ 3.1	$ 6	$ 10.8
ASU 2018-02
Reclassification of AOCI to retained earnings	$ 39.1

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDER’S EQUITY - USD ($) $ in Thousands	Total	Common Shares Outstanding	Preferred Stock	Common Stock and Paid-in Capital	Accumulated Other Comprehensive (Loss)/Income	Retained Earnings	Noncontrolling Interest	SC	SCCommon Stock and Paid-in Capital	SCNoncontrolling Interest	SFS	SFSCommon Stock and Paid-in Capital	SFSRetained Earnings	SAM	SAMCommon Stock and Paid-in Capital
Beginning balance (in shares) at Dec. 31, 2015		530,391,000
Equity, Beginning balance at Dec. 31, 2015	$ 21,847,100		$ 270,445	$ 16,629,822	$ (170,530)	$ 2,672,393	$ 2,444,970
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss)/income attributable to SHUSA	340,206				(22,678)	362,884
Other comprehensive income attributable to NCI	10,807						10,807
Net income attributable to NCI	277,879						277,879
Impact of SC stock option activity								$ 23,288	$ 69	$ 23,219
Capital distribution of shareholder	(30,789)			(30,789)
Stock issued in connection with employee benefit and incentive compensation plans	395			395
Redemption of preferred stock	(75,000)		(75,000)
Dividends paid on preferred stock	(15,128)					(15,128)
Ending balance (in shares) at Dec. 31, 2016		530,391,000
Equity, Ending balance at Dec. 31, 2016	22,378,758		195,445	16,599,497	(193,208)	3,020,149	2,756,875
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss)/income attributable to SHUSA	547,127				(5,223)	552,350
Other comprehensive income attributable to NCI	6,048						6,048
Net income attributable to NCI	405,625						405,625
Impact of SC stock option activity								22,116		22,116
Contribution from shareholder and related tax impact								0	$ 707,589	(707,589)	$ 322,078	$ 430,783	$ (108,705)
Capital distribution of shareholder	11,747			11,747
Stock issued in connection with employee benefit and incentive compensation plans	701			(149)			850
Dividends declared and paid on common stock	(10,000)					(10,000)
Dividends declared and paid to NCI	(4,475)						(4,475)
Dividends declared and paid on preferred stock	$ (14,600)					(14,600)
Ending balance (in shares) at Dec. 31, 2017	530,391,043	530,391,000
Equity, Ending balance at Dec. 31, 2017	$ 23,690,832		195,445	17,723,010	(198,431)	3,453,957	2,516,851
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss)/income attributable to SHUSA	623,277				(84,127)	707,404
Other comprehensive income attributable to NCI	(3,130)						(3,130)
Net income attributable to NCI	283,631						283,631
Impact of SC stock option activity								$ 12,411		$ 12,411
Contribution from shareholder and related tax impact	88,468			88,468										$ 4,396	$ 4,396
Redemption of preferred stock	(200,000)		(195,445)			(4,555)
Dividends declared and paid on common stock	(410,000)					(410,000)
Dividends declared and paid to NCI	(57,511)						(57,511)
Stock repurchase attributable to NCI	(182,647)			43,430			(226,077)
Dividends declared and paid on preferred stock	$ (10,950)					(10,950)
Ending balance (in shares) at Dec. 31, 2018	530,391,043	530,391,000
Equity, Ending balance at Dec. 31, 2018	$ 23,847,232		$ 0	$ 17,859,304	$ (321,652)	$ 3,783,405	$ 2,526,175

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income including NCI		$ 991,035,000	$ 957,975,000	$ 640,763,000
Adjustments to reconcile net income to net cash provided by operating activities:
Impairment of goodwill		0	10,536,000	0
Provision for credit losses		2,339,898,000	2,759,944,000	2,979,725,000
Deferred tax expense/(benefit)		416,875,000	(196,614,000)	213,949,000
Depreciation, amortization and accretion		1,913,225,000	1,606,862,000	1,272,415,000
Net loss on sale of loans		379,181,000	373,532,000	455,330,000
Net loss/(gain) on sale of investment securities		6,717,000	2,444,000	(57,547,000)
OTTI recognized in earnings		0	0	44,000
Loss on debt extinguishment		3,470,000	30,349,000	114,232,000
Net loss/(gain) on real estate owned and premises and equipment		10,610,000	(9,567,000)	10,644,000
Stock-based compensation		913,000	4,674,000	17,677,000
Equity (income)/loss on equity method investments		(4,324,000)	28,323,000	11,054,000
Originations of LHFS, net of repayments		(2,982,366,000)	(4,920,570,000)	(6,215,770,000)
Purchases of LHFS		(1,381,000)	(4,280,000)	(4,730,000)
Proceeds from sales of LHFS		4,264,959,000	4,601,777,000	5,883,608,000
Purchases of trading securities		(1,749,000)	(3,015,000)	(629,947,000)
Proceeds from sales of trading securities		3,875,000	18,347,000	657,494,000
Net change in:
Revolving personal loans		(371,716,000)	(329,168,000)	(317,506,000)
Other assets and BOLI		(202,506,000)	(114,638,000)	98,331,000
Other liabilities		248,345,000	147,149,000	141,776,000
NET CASH PROVIDED BY OPERATING ACTIVITIES		7,015,061,000	4,964,060,000	5,271,542,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of AFS investment securities		1,262,409,000	3,216,595,000	6,755,299,000
Proceeds from prepayments and maturities of AFS investment securities		2,616,417,000	5,231,910,000	10,209,477,000
Purchases of AFS investment securities		(2,421,286,000)	(6,248,059,000)	(12,205,062,000)
Proceeds from prepayments and maturities of HTM investment securities		338,932,000	200,085,000	11,784,000
Purchases of HTM investment securities		(135,898,000)	(352,786,000)	(1,671,285,000)
Proceeds from sales of other investments		153,294,000	327,029,000	492,761,000
Proceeds from maturities of other investments		45,000	560,000	45,000
Purchases of other investments		(214,427,000)	(217,007,000)	(172,292,000)
Proceeds from sales of LHFI		1,016,652,000	1,227,052,000	1,737,780,000
Proceeds from the sales of equity method investments		0	25,145,000	0
Distributions from equity method investments		9,889,000	10,522,000	4,819,000
Contributions to equity method and other investments		(122,816,000)	(87,267,000)	(42,798,000)
Proceeds from settlements of BOLI policies		20,931,000	37,028,000	18,452,000
Purchases of LHFI		(1,243,574,000)	(723,793,000)	(278,810,000)
Net change in loans other than purchases and sales		(8,462,103,000)	2,724,489,000	(1,843,299,000)
Purchases and originations of operating leases		(9,859,861,000)	(6,036,193,000)	(5,642,120,000)
Proceeds from the sale and termination of operating leases		3,588,820,000	3,119,264,000	2,163,497,000
Manufacturer incentives		1,098,055,000	878,219,000	1,205,911,000
Proceeds from sales of real estate owned and premises and equipment		53,569,000	112,497,000	67,702,000
Purchases of premises and equipment		(159,887,000)	(164,111,000)	(234,075,000)
NET CASH (USED IN)/PROVIDED BY INVESTING ACTIVITIES		(12,460,839,000)	3,281,179,000	577,786,000
CASH FLOWS FROM FINANCING ACTIVITIES:
Net change in deposits and other customer accounts		680,277,000	(6,218,010,000)	1,657,262,000
Net change in short-term borrowings		(168,769,000)	(50,331,000)	(522,927,000)
Net proceeds from long-term borrowings		46,461,404,000	43,325,311,000	46,598,213,000
Repayments of long-term borrowings		(43,277,142,000)	(44,005,642,000)	(44,567,564,000)
Proceeds from Federal Home Loan Bank (FHLB) advances (with terms greater than 3 months)		4,900,000,000	1,000,000,000	5,850,000,000
Repayments of FHLB advances (with terms greater than 3 months)		(2,000,000,000)	(5,000,000,000)	(13,799,232,000)
Net change in advance payments by borrowers for taxes and insurance		1,407,000	(4,177,000)	(7,639,000)
Cash dividends paid to preferred stockholders		(10,950,000)	(14,600,000)	(15,128,000)
Dividends paid on common stock		(410,000,000)	(10,000,000)	0
Dividends paid to NCI		(57,511,000)	(4,475,000)	0
Stock repurchase attributable to NCI		(182,647,000)	0	0
Proceeds from the issuance of common stock		8,204,000	13,652,000	7,979,000
Capital contribution from shareholder		85,035,000	9,000,000	0
Redemption of preferred stock		(200,000,000)	0	(75,000,000)
NET CASH PROVIDED BY/(USED IN) FINANCING ACTIVITIES		5,829,308,000	(10,959,272,000)	(4,874,036,000)
NET INCREASE/(DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	[1]	383,530,000	(2,714,033,000)	975,292,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD	[1]	10,338,774,000	13,052,807,000	12,077,515,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	[1]	10,722,304,000	10,338,774,000	13,052,807,000
Supplemental Cash Flow Information [Abstract]
Income taxes paid/(received), net		26,261,000	3,954,000	(146,132,000)
Interest paid		1,694,850,000	1,442,484,000	1,439,126,000
NON-CASH TRANSACTIONS
Loans transferred to/(from) other real estate owned		86,467,000	44,650,000	83,364,000
Loans transferred from/(to) held-for-investment (HFI) (from)/to held-for-sale, net (HFS)		731,944,000	202,760,000	143,825,000
Unsettled purchases of investment securities		2,298,000	0	230,052,000
Unsettled sales of investment securities		0	39,783,000	0
Residential loan securitizations		3,844,000	18,214,000	26,736,000
Capital distribution to shareholder		0	0	30,789,000
AFS investment securities transferred to HTM investment securities		1,167,189,000	0	0
SFS
NON-CASH TRANSACTIONS
Contribution from shareholder	[2]	0	322,078,000	0
SC
NON-CASH TRANSACTIONS
Contribution from shareholder		0	707,589,000	0
SAM
NON-CASH TRANSACTIONS
Contribution from shareholder	[2]	$ 4,396,000	$ 0	$ 0
[1]	The beginning, ending and net change balances for the periods ended December 31, 2018, December 31, 2017, and December 31, 2016 include restricted cash balances of $3.8 billion, $2.9 billion, and $(887.1) million; $3.0 billion, $3.8 billion, and $801.9 million; and $2.6 billion, $3.0 billion, and $386.4 million, respectively.
[2]	The contributions of SFS and SAM were accounted for as non-cash transactions. Refer to Note 1 - Basis of Presentation and Accounting Policies for additional information.

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Statement of Cash Flows [Abstract]
Beginning restricted cash	$ 3,818,807	[1]	$ 3,000,000		$ 2,600,000
Net change in restricted cash	(887,100)		801,900		386,400
Ending restricted cash	$ 2,931,711	[1]	$ 3,818,807	[1]	$ 3,000,000
[1]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.

BASIS OF PRESENTATION AND ACCOU

BASIS OF PRESENTATION AND ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
BASIS OF PRESENTATION AND ACCOUNTING POLICIES	BASIS OF PRESENTATION AND ACCOUNTING POLICIES Introduction Santander Holdings USA, Inc. ("SHUSA" or "the Company") is the parent company (the "Parent Company") of Santander Bank, National Association, (the "Bank" or "SBNA"), a national banking association; Santander Consumer USA Holdings Inc. (together with its subsidiaries, "SC"), a consumer finance company; Santander BanCorp (together with its subsidiaries, "Santander BanCorp"), a financial holding company headquartered in Puerto Rico that offers a full range of financial services through its wholly-owned banking subsidiary, Banco Santander Puerto Rico ("BSPR"); Santander Securities LLC ("SSLLC"), a broker-dealer headquartered in Boston, Massachusetts; Banco Santander International ("BSI"), an Edge corporation located in Miami, Florida, that offers a full range of banking services to foreign individuals and corporations based primarily in Latin America; and Santander Investment Securities Inc. ("SIS"), a registered broker-dealer located in New York providing services in investment banking, institutional sales, and trading and offering research reports of Latin American and European equity and fixed income securities; as well as several other subsidiaries. SSLLC, SIS, and another SHUSA subsidiary, Santander Asset Management, LLC (“SAM”), are registered investment advisers with the Securities and Exchange Commission (the “SEC”). SHUSA is headquartered in Boston and the Bank's home office is in Wilmington, Delaware. SHUSA is a wholly-owned subsidiary of Banco Santander, S.A. ("Santander"). The Parent Company's two largest subsidiaries by asset size and revenue are the Bank and SC. The Bank’s primary business consists of attracting deposits and providing other retail banking services through its network of retail branches, and originating small business loans, middle market, large and global commercial loans, multifamily loans, residential mortgage loans, home equity lines of credit, and auto and other consumer loans throughout the Mid-Atlantic and Northeastern areas of the United States, focused throughout Pennsylvania, New Jersey, New York, New Hampshire, Massachusetts, Connecticut, Rhode Island, and Delaware. The Bank uses its deposits, as well as other financing sources, to fund its loan and investment portfolios. SC is a specialized consumer finance company focused on vehicle finance and third-party servicing. SC's primary business is the indirect origination and securitization of retail installment contracts ("RICs") principally through manufacturer-franchised dealers in connection with their sale of new and used vehicles to subprime retail consumers. In conjunction with a ten -year private label financing agreement with Fiat Chrysler Automobiles US LLC ("FCA") that became effective May 1, 2013 (the "Chrysler Agreement"), SC 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 RICs and leases, as well as dealer loans for inventory, construction, real estate, working capital and revolving lines of credit. RICs 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 RICs and vehicle leases entered into with FCA customers as well as dealer loans. Refer to Note 20 for additional details. In June 2018, SC announced that it was in exploratory discussions with FCA regarding the future of FCA's U.S. finance operations. FCA has announced its intention to establish a captive U.S. auto finance unit and indicated that acquiring Chrysler Capital is one option it will consider. Under the Chrysler Agreement, FCA has the option to acquire, for fair market value, an equity participation in the business offering and providing financial services contemplated by the Chrysler Agreement. The likelihood, timing and structure of any such transaction, and the likelihood that the Chrysler Agreement will terminate, cannot be reasonably determined. In July 2018, FCA and the Company entered into a tolling agreement pursuant to which the parties agreed to preserve their respective rights, claims and defenses under the Chrysler Agreement as they existed on April 30, 2018 and to refrain from delivering a written notice to the other party under the Chrysler Agreement until December 31, 2018. FCA has not delivered a notice to exercise its equity option. SC also originates vehicle loans through a web-based direct lending program, purchases vehicle RICs from other lenders, and services automobile and recreational and marine vehicle portfolios for other lenders. Additionally, SC has other relationships through which it provides personal loans, private-label revolving lines of credit and other consumer finance products. As of December 31, 2018 , SC was owned approximately 69.7% by SHUSA and 30.3% by other shareholders. SC Common Stock is listed on the New York Stock Exchange (the "NYSE") under the trading symbol "SC." NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Intermediate Holding Company ("IHC") The enhanced prudential standards mandated by Section 165 of the Dodd-Frank Wall Street Reform and Consumer Protection Act (the "DFA")(the “Final Rule") were enacted by the Federal Reserve System (the "Federal Reserve") to strengthen regulatory oversight of foreign banking organizations ("FBOs"). Under the Final Rule, FBOs with over $50 billion of U.S. non-branch assets, including Santander, are required to consolidate U.S. subsidiary activities under an IHC. Due to its U.S. non-branch total consolidated asset size, Santander is subject to the Final Rule. As a result of this rule, Santander transferred substantially all of its equity interests in U.S. bank and non-bank subsidiaries previously outside the Company to the Company, which became an IHC effective July 1, 2016. These subsidiaries included Santander BanCorp, BSI, SIS and SSLLC, as well as several other subsidiaries. On July 1, 2017, an additional Santander subsidiary, SFS, a finance company located in Puerto Rico, was transferred to the Company. Additionally, effective July 2, 2018, Santander transferred SAM to the IHC. The contribution of SAM to the Company transferred approximately $5.4 million of assets, $1.0 million of liabilities, and $4.4 million of equity to the Company. Although SAM is an entity under common control, its results of operations, financial condition, and cash flows are immaterial to the historical financial results of the Company. As a result, the Company elected to report the results of SAM on a prospective basis beginning July 2, 2018. SFS’ results of operations, financial condition, and cash flows are immaterial to the historical financial results of the Company and the Company also elected to report its results prospectively. As a result of the 2017 contribution of SFS in 2017 and SAM in 2018, SHUSA's net income is understated by $1.0 million and $6.0 million for the years ended December 31, 2018 and 2017, respectively, and overstated for the year ended December 31, 2016 by $9.3 million. In addition, a contribution to stockholder's equity of $4.4 million and $322.1 million was recorded on July 2, 2018, and July 1, 2017, respectively. These amounts are immaterial to the overall presentation of the Company's financial statements for each of the periods presented. Basis of Presentation These Condensed Consolidated Financial Statements include accounts of the Company and its consolidated subsidiaries, and certain special purpose financing trusts that are considered VIEs. The Company generally consolidates VIEs for which it is deemed to be the primary beneficiary and voting interest entities ("VOEs") in which the Company has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation. These Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and pursuant to SEC regulations. Additionally, where applicable, the Company's accounting policies conform to the accounting and reporting guidelines prescribed by bank regulatory authorities. In the opinion of management, the accompanying Consolidated Financial Statements reflect all adjustments of a normal and recurring nature necessary for a fair statement of the Consolidated Balance Sheets , Statements of Operations , Statements of Comprehensive Income , Statements of Stockholder's Equity and Statements of Cash Flows ("SCF") for the periods indicated, and contain adequate disclosure to make the information presented not misleading. Corrections to Previously Reported Amounts Certain accounting for RICs and auto loans In connection with preparing its financial statements for the quarter ended September 30, 2018, the Company identified and corrected two immaterial errors. To correct the errors, the Company has prepared its Consolidated Financial Statement as of and for the period ended December 31, 2018 on a corrected basis and revised its comparative Consolidated Financial Statements included in this Form 10-K. The matters giving rise to the corrections are summarized below: • For core retail auto loans originated at SC after January 1, 2017, as previously disclosed, the Company had determined past due status using a 90% required minimum payment threshold, while continuing to use a 50% threshold to report past due status on core retail auto loans originated prior to that date. SC had accounted for this change as a change in accounting estimate. In the third quarter of 2018, the Company and SC determined that a borrower’s payment of 50% of the contractual amount was not sufficient to qualify as substantially all of the contractual payments due, and historically a 90% required minimum payment threshold should be used for all loans and prior reporting was in error. Therefore, the consolidated financial statements and related delinquency disclosures have been corrected to be on that basis. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) • On January 1, 2017, as previously disclosed, SC prospectively began classifying as non-accrual loans (1) any loans designated as troubled debt restructurings (“TDRs") and 60 days past due at the time of TDR and (2) any loans less than 60 days past due at the time of TDR that had a third instance of deferral. These TDR loans were also placed on a cost recovery basis from that time forward and not returned to accrual status until there was sustained evidence of collectability. The Company treated the changes as changes in an accounting estimate. In the third quarter of 2018, the Company determined that the changes in both nonaccrual designation and cost recovery basis were in error and, in turn, has corrected the error by reverting to its accounting policy at December 31, 2016 whereby loans are placed on non-accrual when they are more than 60 days past due, and reversing the impacts of the change going back to January 1, 2017. The following tables summarize the impacts of the corrections on the Company's Consolidated Balance Sheet and Consolidated Statement of Operations for the periods indicated: As of For the year ended December 31, 2017 December 31, 2017 As Reported Corrections As Revised As Reported Corrections As Revised ASSETS INTEREST INCOME LHFI $ 80,740,852 $ 49,829 $ 80,790,681 Loans $ 7,287,400 $ 89,945 $ 7,377,345 ALLL (3,911,575 ) (83,312 ) (3,994,887 ) TOTAL INTEREST INCOME 7,786,134 89,945 7,876,079 Other assets 3,632,427 13,978 3,646,405 NET INTEREST INCOME 6,334,005 89,945 6,423,950 TOTAL ASSETS 128,294,030 (19,505 ) 128,274,525 Provision for credit losses 2,650,494 109,450 2,759,944 LIABILITIES NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES 3,683,511 (19,505 ) 3,664,006 Deferred tax liabilities, net 969,996 (4,706 ) 965,290 Income tax provision / (benefit) (152,334 ) (4,706 ) (157,040 ) TOTAL LIABILITIES 104,588,399 (4,706 ) 104,583,693 NET INCOME including NCI 972,774 (14,799 ) 957,975 STOCKHOLDER'S EQUITY Less: Net income attributable to NCI 411,707 (6,082 ) 405,625 Retained earnings 3,462,674 (8,717 ) 3,453,957 NET INCOME ATTRIBUTABLE TO SHUSA $ 561,067 $ (8,717 ) $ 552,350 TOTAL SHUSA STOCKHOLDER'S EQUITY 21,182,698 (8,717 ) 21,173,981 NCI 2,522,933 (6,082 ) 2,516,851 TOTAL STOCKHOLDER'S EQUITY 23,705,631 (14,799 ) 23,690,832 TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY $ 128,294,030 $ (19,505 ) $ 128,274,525 The following table summarizes the impacts of the corrections on the Company's Condensed Consolidated SCF for the period indicated: For the year ended December 31, 2017 As Reported (1) Corrections As Revised Net cash provided by operating activities $ 4,888,092 $ 75,968 $ 4,964,060 Net cash provided by (used in) investing activities $ 3,357,147 $ (75,968 ) $ 3,281,179 (1) Amounts have been adjusted for the adoption of ASU 2016-15 and ASU 2016-18. In addition to the revision of the Company's Consolidated Financial Statements, information within the Notes to the Consolidated Financial Statements has been revised to reflect the correction of errors discussed above. The following tables summarize the impacts of the correction of those items: December 31, 2017 As Reported Corrections As Revised Non-performing - RICs and auto loans - originated $ 1,816,226 $ (559,104 ) $ 1,257,122 Total non-performing loans 2,949,997 (559,104 ) 2,390,893 Total non-performing assets 3,293,656 (559,104 ) 2,734,552 NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) December 31, 2017 As Reported Corrections As Revised 30-89 DPD (1) 90+ DPD Current 30-89 DPD 90+ DPD Current 30-89 DPD 90+ DPD Current RICs and auto loans - originated $ 3,405,721 $ 327,045 $ 20,449,706 $ 196,587 $ 29,971 $ (176,729 ) $ 3,602,308 $ 357,016 $ 20,272,977 Total loans $ 4,349,047 $ 972,384 $ 77,941,907 $ 196,587 $ 29,971 $ (176,729 ) $ 4,545,634 $ 1,002,355 $ 77,765,178 (1) Days past due ("DPD"). Recently Adopted Accounting Standards Since January 1, 2018, the Company adopted the following Financial Accounting Standards Board ("FASB") Accounting Standards Updates (“ASUs"): • ASU 2014-09, Revenue from Contracts with Customers (Topic 606), as amended . 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. It includes a five-step process to assist an entity in achieving the main principles of revenue recognition under ASC 606. Because the ASU does not apply to revenue associated with leases and financial instruments (including loans, securities, and derivatives), it did not have a material impact on the elements of the Company's Consolidated Statements of Operations most closely associated with leases and financial instruments (such as interest income, interest expense and securities gains and losses). The Company adopted this ASU as of January 1, 2018 using the modified retrospective method of transition, resulting in an immaterial cumulative-effect adjustment recorded to opening retained earnings for the current period. The adoption of this ASU did not result in material changes in the timing of the Company's revenue recognition, but requires gross presentation of certain costs previously offset against revenue. This change in presentation is reflected in the current period and will increase both noninterest revenue and noninterest expense for the Company. The increase is predominantly associated with certain distribution costs on wealth management products (historically offset against Miscellaneous income), with the remainder of the increase associated with certain underwriting service costs (historically offset against Miscellaneous income). Refer to Note 17 for additional details. Results for reporting periods beginning after January 1, 2018 are presented under the new revenue recognition standard, while prior period amounts have not been adjusted and continue to be reported in accordance with our historic accounting. The cumulative-effect of the changes made to our January 1, 2018 Consolidated Balance Sheet for the adoption of the new revenue recognition standard were as follows: (in thousands) Balance at December 31, 2017 Adjustments Balance at January 1, 2018 Assets - LHFI $ 80,790,681 $ 5,514 $ 80,796,195 Other assets 3,646,405 (3,592 ) 3,642,813 Total assets 128,274,525 1,922 128,276,447 Liabilities - other liabilities 799,403 (1,378 ) 798,025 Total liabilities 104,583,693 (1,378 ) 104,582,315 Stockholders' equity - retained earnings 3,453,957 3,300 3,457,257 Total stockholders' equity 23,690,832 3,300 23,694,132 The following discloses the impact on the Company's Consolidated Balance Sheet at December 31, 2018 and the Consolidated Statement of Operations for the year ended December 31, 2018 of the adoption of this new accounting standard: December 31, 2018 (in thousands) As Reported Balance Without Adoption Assets - LHFI $ 87,045,868 $ 87,041,454 Other assets 3,653,336 3,656,543 Total assets 135,634,285 135,633,078 Liabilities - other liabilities 912,775 914,153 Total liabilities 111,787,053 111,788,431 Stockholders' equity - retained earnings 3,783,405 3,780,820 Total stockholders' equity 23,847,232 23,844,647 NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Year Ended December 31, 2018 (in thousands) As Reported Balance Without Adoption Non-interest income Consumer and commercial fees $ 568,147 $ 565,137 Miscellaneous income/(loss) 307,282 293,973 Total non-interest income 3,244,308 3,227,989 General, administrative and other expenses Technology, outside service, and marketing expense 590,249 582,614 Loan expense 384,899 395,331 Other administrative expenses 608,989 588,773 Total general, administrative, and other expenses 5,832,325 5,814,906 Income before income tax provision 1,416,935 1,418,035 Income tax provision 425,900 426,285 Net income including NCI $ 991,035 $ 991,750 • ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, as amended. This new guidance amends the presentation and accounting for certain financial instruments, including liabilities measured at fair value under the FVO and equity investments. The guidance also updates fair value presentation and disclosure requirements for financial instruments measured at amortized cost. The Company adopted this standard on January 1, 2018, and it did not have a material impact on the Company's financial position or results of operations. As a result of the adoption of this standard, the Company reclassified approximately $10.0 million of equity securities from Investments AFS to Other investments on January 1, 2018. Future changes in the fair value of the Company's equity securities will be recognized in the Condensed Consolidated Statements of Operations rather than Other comprehensive Income. • ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. This new guidance amends the hedge accounting model to enable entities to better portray their risk management activities in their 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 companies for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The Company adopted this standard in the first quarter of 2018. It did not have a material impact on the opening balance of retained earnings for the cumulative-effect adjustment related to eliminating the separate measurement of ineffectiveness. Refer to Note 12 for further discussion of the Company's derivatives. • ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in this ASU allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cut and Jobs Act of 2017 (the “TCJA"). As a result of adoption of this ASU in the first quarter of 2018, the Company reclassified $39.1 million from accumulated other comprehensive income with an offsetting credit to retained earnings. Cumulative net impact to opening retained earnings As a result of the adoption of the new accounting standards outlined above, the Company recorded a cumulative net increase to opening retained earnings of $42.0 million . Those impacts were attributed to the following ASUs adopted during the period: Impact to Retained earnings (in thousands) Adoption of ASU 2014-09, Revenue Recognition $ 3,300 Adoption of ASU 2016-1, Financial Instruments (418 ) Adoption of ASU 2018-02, Statement of Comprehensive Income 39,094 Cumulative-effect adjustment upon adoption of new accounting standards 41,976 Other adjustments at subsidiary 5,573 Net impact to opening retained earnings $ 47,549 NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) The adoption of the following ASUs did not have an impact on the Company's financial position or results of operations: • ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments • ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory • ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (A consensus of the FASB Emerging Issues Task Force) • ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business • ASU 2017-05, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets • ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost • ASU 2017-09 , Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting • ASU 2018-05, Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118 • ASU 2018-06, Codification Improvements to Topic 942, Financial Services—Depository and Lending Significant Accounting Policies The preparation of financial statements in conformity with 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. Management has identified (i) the allowance for loan losses and the reserve for unfunded lending commitments, (ii) estimates of expected residual values of leases vehicles subject to operating leases, (iii) accretion of discounts and subvention on RICs, (iv) goodwill, (v) fair value of financial instruments, and (vi) income taxes as the Company's significant accounting policies and estimates, in that they are important to the portrayal of the Company's financial condition, results of operations and cash flows and the accounting estimates related thereto require management's most difficult, subjective and complex judgments as a result of the need to make estimates about the effect of matters that are inherently uncertain. Consolidation In accordance with the applicable accounting guidance for consolidations, the Consolidated Financial Statements include any VOEs in which the Company has a controlling financial interest and any VIEs for which the Company is deemed to be the primary beneficiary. The Company consolidates its VIEs if the Company has (i) a variable interest in the entity; (ii) the power to direct activities of the VIE that most significantly impact the entity's economic performance; and (iii) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE (i.e., the Company is considered to be the primary beneficiary). The Company generally consolidates its VOEs if the Company, directly or indirectly, owns more than 50% of the outstanding voting shares of the entity and the noncontrolling shareholders do not hold any substantive participating or controlling rights. Interests in VIEs and VOEs can include equity interests in corporations, partnerships and similar legal entities, subordinated debt, securitizations, derivatives contracts, leases, service agreements, guarantees, standby letters of credit, loan commitments, and other contracts, agreements and financial instruments. Upon the occurrence of certain significant events, as required by the VIE model, the Company reassesses whether a legal entity in which the Company is involved is a VIE. The reassessment process considers whether the Company has acquired or divested the power to direct the activities of the VIE through changes in governing documents or other circumstances. The reassessment also considers whether the Company has acquired or disposed of a financial interest that could be significant to the VIE, or whether an interest in the VIE has become significant or is no longer significant. The consolidation status of the entities with which the Company is involved may change as a result of such reassessments. Changes in consolidation status are applied prospectively, with assets and liabilities of a newly consolidated VIE initially recorded at fair value. A gain or loss may be recognized upon deconsolidation of a VIE, depending on the carrying amounts of deconsolidated assets and liabilities compared to the fair value of retained interests and ongoing contractual arrangements. The Company uses the equity method to account for unconsolidated investments in VOEs if the Company has significant influence over the entity's operating and financing decisions but does not maintain a controlling financial interest. Unconsolidated investments in VOEs or VIEs in which the Company has a voting or economic interest of less than 20% generally are carried at cost less any impairment. These investments are included in Other assets on the Consolidated Balance Sheets, and the Company's proportionate share of income or loss is included in Miscellaneous income, net within the Consolidated Statements of Operations. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Business Combinations The Company accounts for business combinations using the acquisition method of accounting, and records the identifiable assets, liabilities and any NCI of the acquired business at their acquisition date fair values. The excess of the purchase price over the estimated fair value of the net assets acquired is recorded as goodwill. Any changes in the estimated acquisition date fair values of the net assets recorded prior to the finalization of a more detailed analysis, but not to exceed one year from the date of acquisition, will change the amount of the purchase price allocable to goodwill. Any subsequent changes to any purchase price allocations that are material to the Company’s Consolidated Financial Statements will be adjusted retrospectively. All acquisition related costs are expensed as incurred. The results of operations of the acquired companies are recorded in the Consolidated Statements of Operations from the date of acquisition. The application of business combination principles including the determination of the fair value of the net assets acquired, requires the use of significant estimates and assumptions. Please see the related discussion under the caption "Goodwill and Intangible Assets" below. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The most significant estimates pertain to fair value measurements, the ALLL and reserve for unfunded lending commitments, accretion of discounts and subvention on RICs, estimates of expected residual values of leased vehicles subject to operating leases, goodwill, and income taxes. Actual results may differ from the estimates, and the differences may be material to the Consolidated Financial Statements. Revenue Recognition The Company primarily earns interest and non-interest income from various sources, including: • Lending (interest income and loan fees). • Investment securities. • Loan sales and servicing. • Finance leases. • BOLI. • Depository services • Commissions and trailer fees • Interchange income, net. • Asset and wealth management fees. Lending and Investment Securities The principal source of revenue is interest income from loans and investment securities. Interest income is recognized on an accrual basis primarily according to non-discretionary formulas in written contracts, such as loan agreements or securities contracts. Revenue earned on interest-earning assets, including unearned income and the accretion of discounts recognized on acquired or purchased loans, is recognized based on the constant effective yield of such interest-earning assets. Unearned income pertains to the net of fees collected and certain costs incurred from loan originations. Gains or losses on sales of investment securities are recognized on the trade date. Loan Sales and Servicing The Company recognizes revenue from servicing commercial mortgages and consumer loans as earned. Mortgage banking income, net includes fees associated with servicing loans for third parties based on the specific contractual terms and changes in the fair value of MSRs. Gains or losses on sales of residential mortgage, multifamily and home equity loans are included within mortgage banking revenues and are recognized when the sale is complete. Finance Leases Income from finance leases is recognized as part of interest income over the term of the lease using the constant effective yield method, while income arising from operating leases is recognized as part of other non-interest income over the term of the lease on a straight-line basis. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) BOLI Income from BOLI represents increases in the cash surrender value of the policies, as well as insurance proceeds and interest. Depository services Depository services are performed under an agreement with a customer, and those services include personal deposit account opening and maintenance, checking services, online banking services, debit card services, etc. Depository service fees related to customer deposits can generally be distinguished between monthly service fees and transactional fees within the single performance obligation of providing depository account services. Monthly account service and maintenance fees are provided over a period of time (usually a month), and revenue is recognized as the Company performs the service (usually at the end of the month). The services for transactional fees are performed at a point in time and revenue is recognized when the transaction occurs. Commissions and trailer fees Commission fees are earned from the selling of annuity contracts to customers on behalf of insurance companies, acting as the broker for certain equity trading, and sales of interests in mutual funds. The Company elected the expected value method for estimating commission fees due to the large number of customer contracts with similar characteristics. However, commissions and trailer fees are fully constrained as the Company cannot sufficiently estimate the consideration to which it could be entitled to earn. Commissions are generally associated with point-in-time transactions or agreements that are one year or less. The performance obligation is satisfied immediately and revenue is recognized as the Company performs the service. Interchange income, net The Company has entered into agreements with payment networ

RECENT ACCOUNTING DEVELOPMENTS

RECENT ACCOUNTING DEVELOPMENTS	12 Months Ended
	Dec. 31, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
RECENT ACCOUNTING DEVELOPMENTS	RECENT ACCOUNTING DEVELOPMENTS In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The primary effect of this ASU is the requirement of lessees to recognize a right of-use-asset and lease liability for all operating leases with a term greater than 12 months. The right-of-use-asset and lease liability are then derecognized in a manner that effectively yields a straight-line lease expense over the lease term. Lessee accounting requirements for finance leases (previously described as capital leases) and lessor accounting requirements for operating, sales-type, and direct financing leases (sales-type and direct financing leases were both previously referred to as capital leases) are largely unchanged. This ASU is effective on January 1, 2019, with early adoption permitted. We adopted the standard as of January 1, 2019, resulting in the recognition of right of use assets of approximately $664.1 million and liabilities of approximately $705.6 million for our operating leases where the Company is the lessee. In addition, and as a result of the standard, the Company recorded a cumulative net increase to opening Retained earnings of $18.7 million . We do not believe the standard will materially affect our Consolidated Statements of Operations or SCF. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments . This guidance significantly changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost. For AFS debt securities, entities will be required to record allowances rather than reduce the carrying amount, as they do today under the OTTI model. The standard also simplifies the accounting model for purchased credit-impaired debt securities and loans. The guidance will be effective for the Company for the first reporting period beginning after December 15, 2019, including interim periods within that year. The Company does not intend to adopt the this ASU 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 current expected credit loss model will alter the assumptions used in calculating the Company's ACL, 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 ACL and related decrease to capital ratios. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which modifies the disclosure requirements for fair value measurements. This ASU removes the requirement to disclose: the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timin g of transfers between levels; and the valuation processes for Level 3 fair value measurements. This ASU requires disclosure of changes in unrealized gains and losses for the period included in OCI (loss) for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. This new guidance will be effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effect the new guidance will have on its Consolidated Financial Statements and related disclosures. In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. This ASU aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This new guidance will be effective for public companies for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effect the new guidance will have on its Consolidated Financial Statements and related disclosures. NOTE 2. RECENT ACCOUNTING DEVELOPMENTS (continued) In October 2018, the FASB issued ASU 2018-16, Derivatives and Hedging (Topic 815), Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes. This ASU permits use of the Overnight Indexed Swap (“OIS”) rate based on the Secured Overnight Financing Rate as an eligible benchmark interest rate for purposes of applying hedge accounting under Topic 815. This update was adopted January 1, 2019, and the Company does not expect the new guidance to have a material on its Consolidated Financial Statements or related disclosures. In addition to those described in detail above, the Company is in the process of evaluating the following ASUs, but does not expect them to have a material impact on the Company's financial position, results of operations, or disclosures: ASU's Effective in 2019: • ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities • ASU 2017-11, Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception • ASU 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting • ASU 2018-17, Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities

INVESTMENT SECURITIES

INVESTMENT SECURITIES	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
INVESTMENT SECURITIES	INVESTMENT SECURITIES Summary of Investment in Debt Securities - AFS and HTM The following tables present the amortized cost, gross unrealized gains and losses and approximate fair values of debt securities AFS at the dates indicated: December 31, 2018 December 31, 2017 (in thousands) Amortized Gross Gross Fair Amortized Gross Gross Fair U.S. Treasury securities $ 1,815,914 $ 560 $ (11,729 ) $ 1,804,745 $ 1,006,219 $ — $ (8,107 ) $ 998,112 Corporate debt securities 160,164 12 (62 ) 160,114 11,639 21 — 11,660 Asset-backed securities (“ABS”) 435,464 3,517 (2,144 ) 436,837 501,575 6,901 (1,314 ) 507,162 Equity securities (1) — — — — 11,428 — (614 ) 10,814 State and municipal securities 16 — — 16 23 — — 23 Mortgage-backed securities (“MBS”): Government National Mortgage Association ("GNMA") - Residential 2,829,075 861 (85,675 ) 2,744,261 4,745,998 3,531 (62,524 ) 4,687,005 GNMA - Commercial 954,651 1,250 (19,515 ) 936,386 1,377,449 179 (19,917 ) 1,357,711 Federal Home Loan Mortgage Corporation ("FHLMC") and Federal National Mortgage Association ("FNMA") - Residential 5,687,221 267 (188,515 ) 5,498,973 6,958,433 1,093 (141,393 ) 6,818,133 FHLMC and FNMA - Commercial 51,808 384 (537 ) 51,655 23,003 — (440 ) 22,563 Total investments in debt securities AFS $ 11,934,313 $ 6,851 $ (308,177 ) $ 11,632,987 $ 14,635,767 $ 11,725 $ (234,309 ) $ 14,413,183 (1) Reflects the reclassification of the Company's investments in equity securities to Other investments as a result of the adoption of ASU 2016-01 as of January 1, 2018. NOTE 3. INVESTMENT SECURITIES (continued) The following tables present the amortized cost, gross unrealized gains and losses and approximate fair values of debt securities HTM at the dates indicated: December 31, 2018 December 31, 2017 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Loss Fair Value Amortized Gross Gross Fair GNMA - Residential $ 1,718,687 $ 1,806 $ (54,184 ) $ 1,666,309 $ 1,447,669 $ 722 $ (26,150 ) $ 1,422,241 GNMA - Commercial 1,031,993 1,426 (23,679 ) 1,009,740 352,139 325 (767 ) 351,697 Total investments in debt securities HTM $ 2,750,680 $ 3,232 $ (77,863 ) $ 2,676,049 $ 1,799,808 $ 1,047 $ (26,917 ) $ 1,773,938 The Company continuously evaluates its investment strategies in light of changes in the regulatory and market environments that could have an impact on capital and liquidity. Based on this evaluation, it is reasonably possible that the Company may elect to pursue other strategies relative to its investment securities portfolio. During the year ended December 31, 2018 , the Company transferred approximately $1.2 billion of MBS from AFS to HTM in conjunction with its capital management strategy. As of December 31, 2018 and 2017 , the Company had investment securities with an estimated carrying value of $6.6 billion and $5.9 billion , respectively, pledged as collateral, which was comprised of the following: $3.0 billion and $3.0 billion , respectively, were pledged as collateral for the Company's borrowing capacity with the FRB; $2.7 billion and $2.3 billion , respectively, were pledged to secure public fund deposits; $78.0 million and $243.8 million , respectively, were pledged to various independent parties to secure repurchase agreements, support hedging relationships, and for recourse on loan sales; $423.3 million and zero , respectively, were pledged to deposits with clearing organizations; and $415.1 million and $387.9 million , respectively, were pledged to secure the Company's customer overnight sweep product. At December 31, 2018 and December 31, 2017 , the Company had $40.2 million and $47.0 million , respectively, of accrued interest related to investment securities which is included in the Other assets line of the Company's Consolidated Balance Sheets . Contractual Maturity of Debt Securities Contractual maturities of the Company’s AFS debt securities at December 31, 2018 were as follows: (in thousands) Due Within One Year Due After 1 Within 5 Years Due After 5 Within 10 Years Due After 10 Years/No Maturity Total (1) Weighted Average Yield (2) U.S Treasury and government agency $ 735,379 $ 1,069,366 $ — $ — $ 1,804,745 1.78 % Corporate debt securities 160,101 — 13 — 160,114 3.33 % ABS 251,958 75,225 17,681 91,973 436,837 3.70 % State and municipal securities — 16 — — 16 7.49 % MBS: GNMA - Residential — 2,625 69,463 2,672,173 2,744,261 2.63 % GNMA - Commercial — — — 936,386 936,386 2.74 % FHLMC and FNMA - Residential — 6,089 191,423 5,301,461 5,498,973 2.51 % FHLMC and FNMA - Commercial — 7,364 24,169 20,122 51,655 2.98 % Total fair value $ 1,147,438 $ 1,160,685 $ 302,749 $ 9,022,115 $ 11,632,987 2.50 % Weighted Average Yield 2.52 % 1.90 % 2.24 % 2.59 % 2.50 % Total amortized cost $ 1,145,692 $ 1,170,312 $ 309,158 $ 9,309,151 $ 11,934,313 (1) The maturities above do not represent the effective duration of the Company's portfolio, since the amounts above are based on contractual maturities and do not contemplate anticipated prepayments. (2) Yields on tax-exempt securities are calculated on a tax equivalent basis and are based on the statutory federal tax rate. NOTE 3. INVESTMENT SECURITIES (continued) Contractual maturities of the Company’s HTM debt securities at December 31, 2018 were as follows: (in thousands) Due Within One Year Due After 1 Within 5 Years Due After 5 Within 10 Years Due After 10 Years/No Maturity Total (1) Weighted Average Yield MBS: GNMA - Residential $ — $ — $ — $ 1,666,309 $ 1,666,309 2.56 % GNMA - Commercial — — — 1,009,740 1,009,740 2.61 % Total fair value $ — $ — $ — $ 2,676,049 $ 2,676,049 2.58 % Weighted average yield — % — % — % 2.58 % 2.58 % Total amortized cost $ — $ — $ — $ 2,750,680 $ 2,750,680 (1) The maturities above do not represent the effective duration of the Company's portfolio, since the amounts above are based on contractual maturities and do not contemplate anticipated prepayments. Actual maturities may differ from contractual maturities when there is a right to call or prepay obligations with or without call or prepayment penalties. Gross Unrealized Loss and Fair Value of Debt Securities AFS and HTM The following tables present the aggregate amount of unrealized losses as of December 31, 2018 and December 31, 2017 on securities in the Company’s AFS investment portfolios classified according to the amount of time those securities have been in a continuous loss position: December 31, 2018 December 31, 2017 Less than 12 months 12 months or longer Less than 12 months 12 months or longer (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Fair Value Unrealized U.S. Treasury securities $ 288,660 $ (315 ) $ 914,212 $ (11,414 ) $ 998,112 $ (8,107 ) $ — $ — Corporate debt securities 152,247 (62 ) 13 — — — — — ABS 31,888 (249 ) 77,766 (1,895 ) 8,013 (125 ) 103,559 (1,189 ) Equity securities (1) — — — — 335 (2 ) 10,398 (612 ) MBS: GNMA - Residential 102,418 (2,014 ) 2,521,278 (83,661 ) 1,236,716 (8,600 ) 2,583,955 (53,924 ) GNMA - Commercial 199,495 (2,982 ) 622,989 (16,533 ) 1,022,452 (11,492 ) 251,209 (8,425 ) FHLMC and FNMA - Residential 237,050 (5,728 ) 5,236,028 (182,787 ) 3,429,678 (32,899 ) 3,017,533 (108,494 ) FHLMC and FNMA - Commercial — — 21,819 (537 ) 6,948 (103 ) 15,614 (337 ) Total investments in debt securities AFS $ 1,011,758 $ (11,350 ) $ 9,394,105 $ (296,827 ) $ 6,702,254 $ (61,328 ) $ 5,982,268 $ (172,981 ) (1) Reflects the reclassification of the Company's investments in equity securities to Other investments as a result of the adoption of ASU 2016-01 as of January 1, 2018. The following tables present the aggregate amount of unrealized losses as of December 31, 2018 and December 31, 2017 on debt securities in the Company’s HTM investment portfolios classified according to the amount of time those securities have been in a continuous loss position: December 31, 2018 December 31, 2017 Less than 12 months 12 months or longer Less than 12 months 12 months or longer (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Fair Value Unrealized MBS: GNMA - Residential $ 205,573 $ (4,810 ) $ 1,295,554 $ (49,374 ) $ 434,322 $ (6,419 ) $ 739,612 $ (19,731 ) GNMA - Commercial 221,250 (5,572 ) 629,847 (18,107 ) 118,951 (767 ) — — Total investments in debt securities HTM $ 426,823 $ (10,382 ) $ 1,925,401 $ (67,481 ) $ 553,273 $ (7,186 ) $ 739,612 $ (19,731 ) NOTE 3. INVESTMENT SECURITIES (continued) OTTI Management evaluates all investment securities in an unrealized loss position for OTTI on a quarterly basis. An unrealized loss exists when the current fair value of an individual security is less than its amortized cost basis. The OTTI assessment is a subjective process requiring the use of judgments and assumptions. During the securities-level assessments, consideration is given to (1) the intent not to sell and probability that the Company will not be required to sell the security before recovery of its cost basis to allow for any anticipated recovery in fair value, (2) the financial condition and near-term prospects of the issuer, as well as company news and current events, and (3) the ability to collect the future expected cash flows. Key assumptions utilized to forecast expected cash flows may include loss severity, expected cumulative loss percentage, cumulative loss percentage to date, weighted average Fair Isaac Corporation ("FICO") scores and weighted average LTV ratio, rating or scoring, credit ratings and market spreads, as applicable. The Company assesses and recognizes OTTI in accordance with applicable accounting standards. Under these standards, if the Company determines that impairment on its debt securities exists and it has made the decision to sell the security or it is more likely than not that the Company will be required to sell the security prior to recovery of its amortized cost basis, it recognizes the entire portion of the unrealized loss in earnings. If the Company has not made a decision to sell the security and it does not expect that it will be required to sell the security prior to the recovery of the amortized cost basis but the Company has determined that OTTI exists, it recognizes the credit-related portion of the decline in value of the security in earnings. The Company did not record any material OTTI related to its investment securities for the years ended December 31, 2018 , 2017 or 2016 . Management has concluded that the unrealized losses on its debt securities for which it has not recognized OTTI (which were comprised of 975 individual securities at December 31, 2018 ) are temporary in nature since (1) they reflect the increase in interest rates, which lowers the current fair value of the securities, (2) they are not related to the underlying credit quality of the issuers, (3) the entire contractual principal and interest due on these securities is currently expected to be recoverable, (4) the Company does not intend to sell these investments at a loss and (5) it is more likely than not that the Company will not be required to sell the investments before recovery of the amortized cost basis, which for the Company's debt securities may be at maturity. Accordingly, the Company has concluded that the impairment on these securities is not other than temporary. Gains (Losses) and Proceeds on Sales of Investment Securities Proceeds from sales of investments in debt securities and the realized gross gains and losses from those sales were as follows: Year Ended December 31, (in thousands) 2018 2017 2016 Proceeds from the sales of AFS securities $ 1,262,409 $ 3,256,378 $ 6,755,299 Gross realized gains $ 5,517 $ 22,224 $ 61,344 Gross realized losses (12,234 ) (24,668 ) (3,797 ) OTTI — — (44 ) Net realized gains/(losses) (1) $ (6,717 ) $ (2,444 ) $ 57,503 (1) Includes net realized gain/(losses) on trading securities of $(1.4) million , $(4.2) million and $(0.3) million for the years ended December 31, 2018 , 2017 and 2016 , respectively. The Company uses the specific identification method to determine the cost of the securities sold and the gain or loss recognized. Other Investments Other Investments consisted of the following as of: (in thousands) December 31, 2018 December 31, 2017 FHLB of Pittsburgh and FRB stock $ 631,239 $ 516,693 Low Income Housing Tax Credit investments ("LIHTC") 163,113 88,170 Equity securities not held for trading (1) 10,995 — CDs with a maturity greater than 90 days — 54,000 Trading securities 10 1 Total $ 805,357 $ 658,864 (1) Reflects the reclassification of the Company's investments in equity securities to Other investments as a result of the adoption of ASU 2016-01 as of January 1, 2018. NOTE 3. INVESTMENT SECURITIES (continued) Other investments primarily include the Company's investment in the stock of the FHLB of Pittsburgh and the FRB. These stocks do not have readily determinable fair values because their ownership is restricted and they lack a market. The stocks can be sold back only at their par value of $100 per share, and FHLB stock can be sold back only to the FHLB or to another member institution. Accordingly, these stocks are carried at cost. During the years ended December 31, 2018 , the Company purchased $267.5 million of FHLB stock at par and redeemed $153.3 million of FHLB stock at par. There was no gain or loss associated with these redemptions. During the years ended December 31, 2018 , the Company purchased $0.2 million of FRB stock at par. Other investments also includes LIHTC investments, time deposits with a maturity of greater than 90 days held at non-affiliated financial institutions, trading securities, and $11.0 million of equity securities. Equity securities are measured at fair value as of December 31, 2018 , with changes in fair value recognized in net income, and consist primarily of Community Reinvestment Act (“CRA") mutual fund investments reclassified as a result of the 2018 adoption of ASU 2016-01, discussed further in Note 1. They were included in Investments AFS at December 31, 2017 . The Company's LIHTC investments are accounted for using the proportional amortization method. With the exception of equity and trading securities which are measured at fair value, the Company evaluates these other investments for impairment based on the ultimate recoverability of the carrying value, rather than by recognizing temporary declines in value. The Company held an immaterial amount of equity securities without readily determinable fair values at the reporting date.

LOANS AND ALLOWANCE FOR CREDIT

LOANS AND ALLOWANCE FOR CREDIT LOSSES	12 Months Ended
	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Abstract]
LOANS AND ALLOWANCE FOR CREDIT LOSSES	=760 798,258 2.7 % — — % Total $ 29,335,220 100.0 % $ 24,966,121 100.0 % (1) Consists primarily of loans for which credit scores are not considered in the ALLL model. (2) Credit scores updated quarterly. (3) Reflects Chrysler portfolio originated for SBNA beginning in July 2018. Consumer Lending Asset Quality Indicators-FICO and LTV Ratio NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) For both residential and home equity loans, loss severity assumptions are incorporated in the loan and lease loss reserve models to estimate loan balances that will ultimately charge off. These assumptions are based on recent loss experience within various current LTV bands within these portfolios. LTVs are refreshed quarterly by applying Federal Housing Finance Agency Home price index changes at a state-by-state level to the last known appraised value of the property to estimate the current LTV. The Company's ALLL incorporates the refreshed LTV information to update the distribution of defaulted loans by LTV as well as the associated loss given default for each LTV band. Reappraisals on a recurring basis at the individual property level are not considered cost-effective or necessary; however, reappraisals are performed on certain higher risk accounts to support line management activities, default servicing decisions, or when other situations arise for which the Company believes the additional expense is warranted. Residential mortgage and home equity financing receivables by LTV and FICO range are summarized as follows: Residential Mortgages (1)(3) December 31, 2018 N/A (2) LTV<=70% 70.01-80% 80.01-90% 90.01-100% 100.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (2) $ 87,808 $ 4,465 $ — $ — $ 423 $ — $ — $ 92,696 <600 69 225,647 54,101 35,625 26,863 2,450 4,604 349,359 600-639 35 157,281 47,712 34,124 37,901 943 1,544 279,540 640-679 — 308,780 112,811 76,512 101,057 1,934 1,767 602,861 680-719 — 560,920 266,877 148,283 175,889 3,630 3,593 1,159,192 720-759 50 1,061,969 535,840 210,046 218,177 4,263 6,704 2,037,049 >=760 213 3,518,916 1,253,733 354,629 220,695 6,477 9,102 5,363,765 Grand Total $ 88,175 $ 5,837,978 $ 2,271,074 $ 859,219 $ 781,005 $ 19,697 $ 27,314 $ 9,884,462 (1) Excludes LHFS. (2) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (3) Allowance model considers LTV for financing receivables in first lien position for the Company and combined LTV ("CLTV") for financing receivables in second lien position for the Company. Home Equity Loans and Lines of Credit (2) December 31, 2018 N/A (1) LTV<=70% 70.01-90% 90.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (1) $ 133,436 $ 841 $ 197 $ — $ 5 $ 134,479 <600 1,130 209,536 64,202 14,948 5,988 295,804 600-639 398 166,384 48,543 7,932 2,780 226,037 640-679 919 305,642 112,937 10,311 6,887 436,696 680-719 869 527,374 215,824 17,231 13,482 774,780 720-759 1,139 732,467 292,516 20,812 14,677 1,061,611 >=760 2,280 1,844,830 614,221 46,993 27,939 2,536,263 Grand Total $ 140,171 $ 3,787,074 $ 1,348,440 $ 118,227 $ 71,758 $ 5,465,670 (1) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (2) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. Residential Mortgages (1)(3) December 31, 2017 N/A (2) LTV<=70% 70.01-80% 80.01-90% 90.01-100% 100.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (2) $ 174,426 $ 6,759 $ 1,214 $ — $ — $ — $ — $ 182,399 <600 21 220,738 55,108 35,617 23,834 2,505 6,020 343,843 600-639 45 155,920 42,420 35,009 34,331 2,696 6,259 276,680 640-679 37 320,248 94,601 90,582 86,004 3,011 2,641 597,124 680-719 98 554,058 236,408 136,916 145,545 3,955 10,317 1,087,297 720-759 92 952,532 480,900 177,700 179,648 4,760 8,600 1,804,232 >=760 588 3,019,418 1,066,103 262,490 185,579 8,418 12,594 4,555,190 Grand Total $ 175,307 $ 5,229,673 $ 1,976,754 $ 738,314 $ 654,941 $ 25,345 $ 46,431 $ 8,846,765 (1) Excludes LHFS. (2) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (3) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Home Equity Loans and Lines of Credit (2) December 31, 2017 N/A (1) LTV<=70% 70.01-90% 90.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (1) $ 154,690 $ 536 $ 238 $ — $ — $ 155,464 <600 8,064 190,657 64,554 16,634 22,954 302,863 600-639 6,276 158,461 61,250 9,236 9,102 244,325 640-679 6,745 297,003 127,347 19,465 14,058 464,618 680-719 8,875 500,234 258,284 24,675 20,261 812,329 720-759 8,587 724,831 332,508 30,526 19,119 1,115,571 >=760 17,499 1,917,373 768,905 73,573 35,213 2,812,563 Grand Total $ 210,736 $ 3,789,095 $ 1,613,086 $ 174,109 $ 120,707 $ 5,907,733 (1) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (2) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. TDR Loans The following table summarizes the Company’s performing and non-performing TDRs at the dates indicated: (in thousands) December 31, 2018 December 31, 2017 Performing $ 5,014,224 $ 5,860,119 Non-performing 908,128 982,868 Total (1) $ 5,922,352 $ 6,842,987 (1) Excludes LHFS. Commercial Loan TDRs All of the Company’s commercial loan modifications are based on the circumstances of the individual customer, including specific customers' complete relationships with the Company. Loan terms are modified to meet each borrower’s specific circumstances at a point in time and may allow for modifications such as term extensions and interest rate reductions. Modifications for commercial loan TDRs generally, although not always, result in bifurcation of the original loan into A and B notes. The A note is restructured to al" id="sjs-B4" xml:space="preserve"> LOANS AND ALLOWANCE FOR CREDIT LOSSES Overall The Company's loans are reported at their outstanding principal balances net of any cumulative charge-offs, unamortized deferred fees and costs and unamortized premiums or discounts. The Company maintains an ACL to provide for losses inherent in its portfolios. Certain loans are pledged as collateral for borrowings, securitizations, or SPEs. These loans totaled $49.5 billion at December 31, 2018 and $50.9 billion at December 31, 2017 . Loans that the Company intends to sell are classified as LHFS. The LHFS portfolio balance at December 31, 2018 was $1.3 billion , compared to $2.5 billion at December 31, 2017 . LHFS in the residential mortgage portfolio are reported at either estimated fair value (if the FVO is elected) or the lower of cost or fair value. For a discussion on the valuation of LHFS at fair value, see Note 16 to the Consolidated Financial Statements . Loans under SC’s personal lending platform have been classified as HFS and adjustments to lower of cost or market are recorded through Miscellaneous income, net on the Consolidated Statements of Operations . As of December 31, 2018 and 2017 , the carrying value of the personal unsecured HFS portfolio was $1.1 billion . Interest on loans is credited to income as it is earned. Loan origination fees and certain direct loan origination costs are deferred and recognized as adjustments to interest income in the Consolidated Statements of Operations over the contractual life of the loan utilizing the interest method. Loan origination costs and fees and premiums and discounts on RICs are deferred and recognized in interest income over their estimated lives using estimated prepayment speeds, which are updated on a monthly basis. At December 31, 2018 and December 31, 2017 , accrued interest receivable on the Company's loans was $524.0 million and $529.9 million , respectively. During the year ended December 31, 2018 , the Company sold substantially all of its mortgage warehouse facilities, which had a book value of $499.2 million for net proceeds of $515.8 million . The $16.7 million gain on sale was recognized within Miscellaneous income, net on the Condensed Consolidated Statements of Operations. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Loan and Lease Portfolio Composition The following presents the composition of the gross loans and leases HFI by portfolio and by rate type: December 31, 2018 December 31, 2017 (dollars in thousands) Amount Percent Amount Percent Commercial LHFI: Commercial real estate ("CRE") loans $ 8,704,481 10.0 % $ 9,279,225 11.5 % Commercial and industrial ("C&I") loans 15,738,158 18.1 % 14,438,311 17.9 % Multifamily loans 8,309,115 9.5 % 8,274,435 10.1 % Other commercial (2) 7,630,004 8.8 % 7,174,739 8.9 % Total commercial LHFI 40,381,758 46.4 % 39,166,710 48.4 % Consumer loans secured by real estate: Residential mortgages 9,884,462 11.4 % 8,846,765 11.0 % Home equity loans and lines of credit 5,465,670 6.3 % 5,907,733 7.3 % Total consumer loans secured by real estate 15,350,132 17.7 % 14,754,498 18.3 % Consumer loans not secured by real estate: RICs and auto loans - originated (4) 28,532,085 32.8 % 23,131,253 28.6 % RICs and auto loans - purchased 803,135 0.9 % 1,834,868 2.3 % Personal unsecured loans 1,531,708 1.8 % 1,285,677 1.6 % Other consumer (3) 447,050 0.4 % 617,675 0.8 % Total consumer loans 46,664,110 53.6 % 41,623,971 51.6 % Total LHFI (1) $ 87,045,868 100.0 % $ 80,790,681 100.0 % Total LHFI: Fixed rate $ 56,696,491 65.1 % $ 50,703,619 62.8 % Variable rate 30,349,377 34.9 % 30,087,062 37.2 % Total LHFI (1) $ 87,045,868 100.0 % $ 80,790,681 100.0 % (1) Total LHFI includes deferred loan fees, net of deferred origination costs and unamortized purchase premiums, net of discounts as well as purchase accounting adjustments. These items resulted in a net increase in the loan balances of $1.4 billion and $1.3 billion as of December 31, 2018 and December 31, 2017 , respectively. (2) Other commercial includes commercial equipment vehicle financing ("CEVF") leveraged leases and loans. (3) Other consumer primarily includes RV and marine loans. (4) Beginning in 2018, the Bank has an agreement with SC by which SC provides the Bank with origination support services in connection with the processing, underwriting and purchase of RICs, primarily from Chrysler dealers. Portfolio segments and classes GAAP requires that entities disclose information about the credit quality of their financing receivables at disaggregated levels, specifically defined as “portfolio segments” and “classes,” based on management’s systematic methodology for determining the ACL. The Company utilizes similar categorization compared to the financial statement categorization of loans to model and calculate the ACL and track the credit quality, delinquency and impairment status of the underlying loan populations. In disaggregating its financing receivables portfolio, the Company’s methodology begins with the commercial and consumer segments. The commercial segmentation reflects line of business distinctions. The CRE line of business includes commercial and industrial owner-occupied real estate and specialized lending for investment real estate. The Company's allowance methodology further classifies loans in this line of business into construction and non-construction loans; however, the methodology for development and determination of the allowance is generally consistent between the two portfolios. "C&I" includes non-real estate-related C&I loans. "Multifamily" represents loans for multifamily residential housing units. “Other commercial” includes loans to global customer relationships in Latin America which are not defined as commercial or consumer for regulatory purposes. The remainder of the portfolio primarily represents the CEVF business. The Company's portfolio classes are substantially the same as its financial statement categorization of loans for consumer loan populations. “Residential mortgages” includes mortgages on residential property, including single family and 1-4 family units. "Home equity loans and lines of credit" include all organic home equity contracts and purchased home equity portfolios. "RICs and auto loans" includes the Company's direct automobile loan portfolios, but excludes RV and marine RICs. "Personal unsecured loans" includes personal revolving loans and credit cards. “Other consumer” includes an acquired portfolio of marine RICs and RV contracts as well as indirect auto loans. In accordance with the Company's accounting policy when establishing the collective ACL for originated loans, the Company's estimate of losses on recorded investment includes the estimate of the related net unaccreted discount balance that is expected at the time of charge-off, while it considers the entire unaccreted discount for loan portfolios purchased at a discount as available to absorb the credit losses when determining the ACL specific to these portfolios. This accounting policy is not applicable to the purchased loan portfolios acquired with evidence of credit deterioration, on which we elected to apply the FVO. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) The RIC and auto loan portfolio is comprised of: (1) RICs originated by SC prior to the first quarter 2014 consolidation and change in control of SC (the “Change in Control"), (2) RICs originated by SC after the Change in Control, and (3) auto loans originated by SBNA. The composition of the portfolio segment is as follows: (in thousands) December 31, 2018 December 31, 2017 RICs - Purchased HFI: Unpaid principal balance ("UPB") (1) $ 844,582 $ 1,929,548 UPB - FVO (2) 9,678 24,926 Total UPB 854,260 1,954,474 Purchase marks (3) (51,125 ) (119,606 ) Total RICs - Purchased HFI 803,135 1,834,868 RICs - Originated HFI: UPB (1) 27,049,875 23,423,031 Net discount (135,489 ) (309,920 ) Total RICs - Originated 26,914,386 23,113,111 SBNA auto loans 1,617,699 18,142 Total RICs - originated post-Change in Control 28,532,085 23,131,253 Total RICs and auto loans HFI $ 29,335,220 $ 24,966,121 (1) UPB does not include amounts related to the loan receivables - unsecured and loan receivables from dealers due to the short-term and revolving nature of these receivables. (2) The Company elected to account for these loans, which were acquired with evidence of credit deterioration, under the FVO. (3) Includes purchase marks of $2.1 million and $5.5 million related to purchase loan portfolios on which we elected to apply the FVO at December 31, 2018 and December 31, 2017 , respectively. During the years ended December 31, 2018 and 2017 , SC originated $7.9 billion and $6.7 billion , respectively, in Chrysler Capital loans (which excludes the SBNA originations program), which represented 46% and 47% , respectively, of the Company's total RIC originations (UPB). As of December 31, 2018 and December 31, 2017 , the Company's carrying value of its auto RIC portfolio consisted of $9.0 billion and $8.2 billion , respectively, of Chrysler Capital loans (excluding the SBNA originations program), which represented 36% and 37% , respectively, of the Company's auto RIC portfolio. ACL Rollforward by Portfolio Segment The activity in the ACL by portfolio segment for the years ended December 31, 2018 , 2017 , and 2016 was as follows: Year Ended December 31, 2018 (in thousands) Commercial Consumer Unallocated Total ALLL, beginning of period $ 443,796 $ 3,504,068 $ 47,023 $ 3,994,887 Provision for loan and lease losses 45,897 2,306,896 — 2,352,793 Charge-offs (108,750 ) (4,974,547 ) — (5,083,297 ) Recoveries 60,140 2,572,607 — 2,632,747 Charge-offs, net of recoveries (48,610 ) (2,401,940 ) — (2,450,550 ) ALLL, end of period $ 441,083 $ 3,409,024 $ 47,023 $ 3,897,130 Reserve for unfunded lending commitments, beginning of period (2) $ 103,835 $ 5,276 $ — $ 109,111 (Release of) / Provision for reserve for unfunded lending commitments (13,647 ) 752 — (12,895 ) Loss on unfunded lending commitments (716 ) — — (716 ) Reserve for unfunded lending commitments, end of period 89,472 6,028 — 95,500 Total ACL, end of period $ 530,555 $ 3,415,052 $ 47,023 $ 3,992,630 Ending balance, individually evaluated for impairment (1) $ 94,120 $ 1,457,174 $ — $ 1,551,294 Ending balance, collectively evaluated for impairment 346,963 1,951,850 47,023 2,345,836 Financing receivables: Ending balance $ 40,381,758 $ 47,947,388 $ — $ 88,329,146 Ending balance, evaluated under the FVO or lower of cost or fair value — 1,393,476 — 1,393,476 Ending balance, individually evaluated for impairment (1) 444,031 5,779,998 — 6,224,029 Ending balance, collectively evaluated for impairment 39,937,727 40,773,914 — 80,711,641 (1) Consists of loans in TDR status. (2) Includes an immaterial reallocation between Commercial and Consumer for the period ending December 31, 2018. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Year Ended December 31, 2017 (in thousands) Commercial Consumer Unallocated Total ALLL, beginning of period $ 449,837 $ 3,317,604 $ 47,023 $ 3,814,464 Provision for loan and lease losses 99,606 2,670,950 — 2,770,556 Other (1) 356 5,283 — 5,639 Charge-offs (144,002 ) (4,891,383 ) — (5,035,385 ) Recoveries 37,999 2,401,614 — 2,439,613 Charge-offs, net of recoveries (106,003 ) (2,489,769 ) — (2,595,772 ) ALLL, end of period $ 443,796 $ 3,504,068 $ 47,023 $ 3,994,887 Reserve for unfunded lending commitments, beginning of period $ 116,866 $ 5,552 $ — $ 122,418 Release of unfunded lending commitments (10,336 ) (276 ) — (10,612 ) Loss on unfunded lending commitments (2,695 ) — — (2,695 ) Reserve for unfunded lending commitments, end of period 103,835 5,276 — 109,111 Total ACL, end of period $ 547,631 $ 3,509,344 $ 47,023 $ 4,103,998 Ending balance, individually evaluated for impairment (2) $ 102,326 $ 1,824,640 $ — $ 1,926,966 Ending balance, collectively evaluated for impairment 341,470 1,679,428 47,023 2,067,921 Financing receivables: Ending balance $ 39,315,888 $ 43,997,279 $ — $ 83,313,167 Ending balance, evaluated under the FVO or lower of cost or fair value 149,177 2,420,155 — 2,569,332 Ending balance, individually evaluated for impairment (2) 593,585 6,652,949 — 7,246,534 Ending balance, collectively evaluated for impairment 38,573,126 34,924,175 — 73,497,301 (1) Includes transfers in for the period ending September 30, 2017. (2) Consists of loans in TDR status. Year Ended December 31, 2016 (in thousands) Commercial Consumer Unallocated Total ALLL, beginning of period $ 456,812 $ 2,742,088 $ 47,245 $ 3,246,145 Provision for loan losses 152,112 2,852,730 (222 ) 3,004,620 Charge-offs (245,399 ) (4,720,135 ) — (4,965,534 ) Recoveries 86,312 2,442,921 — 2,529,233 Charge-offs, net of recoveries (159,087 ) (2,277,214 ) — (2,436,301 ) ALLL, end of period $ 449,837 $ 3,317,604 $ 47,023 $ 3,814,464 Reserve for unfunded lending commitments, beginning of period $ 143,461 $ 5,560 $ — $ 149,021 Provision for unfunded lending commitments (24,887 ) (8 ) — (24,895 ) Loss on unfunded lending commitments (1,708 ) — — (1,708 ) Reserve for unfunded lending commitments, end of period 116,866 5,552 — 122,418 Total ACL end of period $ 566,703 $ 3,323,156 $ 47,023 $ 3,936,882 Ending balance, individually evaluated for impairment (2) $ 98,596 $ 1,520,375 $ — $ 1,618,971 Ending balance, collectively evaluated for impairment 351,241 1,797,229 47,023 2,195,493 Financing receivables: Ending balance $ 44,561,193 $ 43,844,900 $ — $ 88,406,093 Ending balance, evaluated under the FVO or lower of cost or fair value (1) 121,065 2,482,595 — 2,603,660 Ending balance, individually evaluated for impairment (2) 666,386 5,795,366 — 6,461,752 Ending balance, collectively evaluated for impairment 43,773,742 35,566,939 — 79,340,681 The following table presents the activity in the allowance for loan losses for the RICs acquired in the Change in Control and those originated by SC subsequent to the Change in Control. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Year Ended December 31, 2018 (in thousands) Purchased Originated Total ALLL, beginning of period $ 384,167 $ 2,862,355 $ 3,246,522 (Release of) / Provision for loan and lease losses (53,551 ) 2,278,155 2,224,604 Charge-offs (319,069 ) (4,508,583 ) (4,827,652 ) Recoveries 182,195 2,360,649 2,542,844 Charge-offs, net of recoveries (136,874 ) (2,147,934 ) (2,284,808 ) ALLL, end of period $ 193,742 $ 2,992,576 $ 3,186,318 Year Ended December 31, 2017 (in thousands) Purchased Originated Total ALLL, beginning of period $ 559,092 $ 2,538,127 $ 3,097,219 Provision for loan and lease losses 181,698 2,332,160 2,513,858 Charge-offs (606,898 ) (4,128,249 ) (4,735,147 ) Recoveries 250,275 2,120,317 2,370,592 Charge-offs, net of recoveries (356,623 ) (2,007,932 ) (2,364,555 ) ALLL, end of period $ 384,167 $ 2,862,355 $ 3,246,522 Year ended December 31, 2016 (in thousands) Purchased Originated Total ALLL, beginning of period $ 590,807 $ 1,891,989 $ 2,482,796 Provision for loan and lease losses 309,664 2,459,588 2,769,252 Charge-offs (1,024,882 ) (3,539,153 ) (4,564,035 ) Recoveries 683,503 1,725,703 2,409,206 Charge-offs, net of recoveries (341,379 ) (1,813,450 ) (2,154,829 ) ALLL, end of period $ 559,092 $ 2,538,127 $ 3,097,219 Refer to Note 20 for discussion of contingencies and possible losses related to the impact of hurricane activity in regions where the Company has lending activities. Non-accrual loans by Class of Financing Receivable The recorded investment in non-accrual loans disaggregated by class of financing receivables and other non-performing assets is summarized as follows: (in thousands) December 31, 2018 December 31, 2017 Non-accrual loans: Commercial: CRE $ 88,500 $ 139,236 C&I 189,827 230,481 Multifamily 13,530 11,348 Other commercial 72,841 83,468 Total commercial loans 364,698 464,533 Consumer: Residential mortgages 216,815 265,436 Home equity loans and lines of credit 115,813 134,162 RICs and auto loans - originated 1,455,406 1,257,122 RICs - purchased 89,916 256,617 Personal unsecured loans 3,602 2,366 Other consumer 9,187 10,657 Total consumer loans 1,890,739 1,926,360 Total non-accrual loans 2,255,437 2,390,893 OREO 107,868 130,777 Repossessed vehicles 224,046 210,692 Foreclosed and other repossessed assets 1,844 2,190 Total OREO and other repossessed assets 333,758 343,659 Total non-performing assets $ 2,589,195 $ 2,734,552 NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Age Analysis of Past Due Loans The Company generally considers an account delinquent when an obligor fails to pay substantially all (defined as 90% ) of the scheduled payment by the due date. The age of recorded investments in past due loans and accruing loans 90 days or greater past due disaggregated by class of financing receivables is summarized as follows: As of: December 31, 2018 (in thousands) 30-89 90 Total Current Total (1) Recorded Investment Commercial: CRE $ 20,179 $ 49,317 $ 69,496 $ 8,634,985 $ 8,704,481 $ — C&I (1) 61,495 74,210 135,705 15,602,453 15,738,158 — Multifamily 1,078 4,574 5,652 8,303,463 8,309,115 — Other commercial 16,081 5,330 21,411 7,608,593 7,630,004 6 Consumer: Residential mortgages 186,222 171,265 357,487 9,741,496 10,098,983 — Home equity loans and lines of credit 58,507 79,860 138,367 5,327,303 5,465,670 — RICs and auto loans - originated 4,076,015 419,819 4,495,834 24,036,251 28,532,085 — RICs and auto loans - purchased 242,604 21,923 264,527 538,608 803,135 — Personal unsecured loans 93,675 102,463 196,138 2,404,327 2,600,465 98,973 Other consumer 16,261 13,782 30,043 417,007 447,050 — Total $ 4,772,117 $ 942,543 $ 5,714,660 $ 82,614,486 $ 88,329,146 $ 98,979 (1) Residential mortgages includes $214.5 million of LHFS at December 31, 2018 . (2) Personal unsecured loans includes $1.1 billion of LHFS at December 31, 2018 . As of December 31, 2017 (in thousands) 30-89 90 Total Current Total (1) Recorded Commercial: CRE $ 25,174 $ 100,524 $ 125,698 $ 9,153,527 $ 9,279,225 $ — C&I 49,584 75,924 125,508 14,461,981 14,587,489 — Multifamily 3,562 2,990 6,552 8,267,883 8,274,435 — Other commercial 34,021 3,359 37,380 7,137,359 7,174,739 — Consumer: Residential mortgages 217,558 210,777 428,335 8,628,600 9,056,935 — Home equity loans and lines of credit 50,919 91,975 142,894 5,764,839 5,907,733 — RICs and auto loans - originated 3,602,308 357,016 3,959,324 20,272,977 24,232,301 — RICs and auto loans - purchased 452,235 40,516 492,751 1,342,117 1,834,868 — Personal unsecured loans 85,394 105,054 190,448 2,157,319 2,347,767 96,461 Other consumer 24,879 14,220 39,099 578,576 617,675 — Total $ 4,545,634 $ 1,002,355 $ 5,547,989 $ 77,765,178 $ 83,313,167 $ 96,461 (1) C&I loans included $149.2 million of LHFS at December 31, 2017 . (2) Residential mortgages included $210.2 million of LHFS at December 31, 2017 . (3) RICs and auto loans included $1.1 billion of LHFS at December 31, 2017 . (4) Personal unsecured loans included $1.1 billion of LHFS at December 31, 2017 . NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Impaired Loans by Class of Financing Receivable Impaired loans are generally defined as all TDRs plus commercial non-accrual loans in excess of $1.0 million . Impaired loans disaggregated by class of financing receivables are summarized as follows: December 31, 2018 (in thousands) Recorded Investment (1) UPB Related Average With no related allowance recorded: Commercial: CRE $ 79,056 $ 88,960 $ — $ 102,731 C&I 25,859 36,067 — 54,200 Multifamily 18,260 19,175 — 14,074 Other commercial 7,348 7,380 — 4,058 Consumer: Residential mortgages 144,899 201,905 — 126,110 Home equity loans and lines of credit 46,069 48,021 — 49,233 RICs and auto loans - originated 1 1 — 1 RICs and auto loans - purchased 7,061 9,071 — 11,627 Personal unsecured loans 4 4 — 42 Other consumer 3,591 3,591 — 6,574 With an allowance recorded: Commercial: CRE 58,861 66,645 6,449 78,271 C&I 180,178 197,937 66,329 178,474 Multifamily — — — 3,101 Other commercial 59,914 59,914 21,342 68,813 Consumer: Residential mortgages 253,965 289,447 29,156 288,029 Home equity loans and lines of credit 60,540 71,475 4,272 62,684 RICs and auto loans - originated 4,630,614 4,652,013 1,231,164 4,742,820 RICs and auto loans - purchased 614,071 694,000 184,545 890,274 Personal unsecured loans 16,182 16,446 6,875 16,330 Other consumer 10,060 13,275 1,162 10,826 Total: Commercial $ 429,476 $ 476,078 $ 94,120 $ 503,722 Consumer 5,787,057 5,999,249 1,457,174 6,204,550 Total $ 6,216,533 $ 6,475,327 $ 1,551,294 $ 6,708,272 (1) Recorded investment includes deferred loan fees, net of deferred origination costs and unamortized purchase premiums, net of discounts, as well as purchase accounting adjustments. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) The Company recognized interest income, not including the impact of purchase accounting adjustments, of $761.0 million for the year ended December 31, 2018 on approximately $5.0 billion of TDRs that were in performing status as of December 31, 2018 . December 31, 2017 (in thousands) Recorded Investment (1) UPB Related Average With no related allowance recorded: Commercial: CRE $ 126,406 $ 174,842 $ — $ 139,063 C&I 82,541 96,324 — 75,338 Multifamily 9,887 10,838 — 10,129 Other commercial 767 911 — 903 Consumer: Residential mortgages 107,320 128,458 — 141,195 Home equity loans and lines of credit 52,397 54,421 — 50,635 RICs and auto loans - purchased 16,192 20,783 — 25,283 Personal unsecured loans 80 80 — 345 Other consumer 9,557 13,055 — 14,446 With an allowance recorded: Commercial: CRE 97,680 117,730 18,523 118,492 C&I 176,769 200,382 59,696 196,674 Multifamily 6,201 6,201 313 4,566 Other commercial 77,712 77,772 23,794 42,465 Consumer: Residential mortgages 322,092 392,833 40,963 303,361 Home equity loans and lines of credit 64,827 77,435 4,770 57,345 RICs and auto loans - originated 4,855,026 4,914,656 1,422,834 4,063,171 RICs and auto loans - purchased 1,166,476 1,318,306 347,663 1,511,212 Personal unsecured loans 16,477 16,661 6,259 16,668 Other consumer 11,592 15,290 2,151 12,343 Total: Commercial $ 577,963 $ 685,000 $ 102,326 $ 587,630 Consumer 6,622,036 6,951,978 1,824,640 6,196,004 Total $ 7,199,999 $ 7,636,978 $ 1,926,966 $ 6,783,634 (1) Recorded investment includes deferred loan fees, net of deferred origination costs and unamortized purchase premiums, net of discounts, as well as purchase accounting adjustments. The Company recognized interest income, not including the impact of purchase accounting adjustments, of $795.4 million for the year ended December 31, 2017 on approximately $5.9 billion of TDRs that were in performing status as of December 31, 2017 . Commercial Lending Asset Quality Indicators The Company's Risk Department performs a credit analysis and classifies certain loans over an internal threshold based on the commercial lending classifications described below: PASS. Asset is well-protected by the current net worth and paying capacity of the obligor or guarantors, if any, or by the fair value less costs to acquire and sell any underlying collateral in a timely manner. SPECIAL MENTION. Asset has potential weaknesses that deserve management’s close attention, which, if left uncorrected, may result in deterioration of the repayment prospects for an asset at some future date. Special mention assets are not adversely classified. SUBSTANDARD. Asset is inadequately protected by the current net worth and paying capacity of the obligor or by the collateral pledged, if any. A well-defined weakness or weaknesses exist that jeopardize the liquidation of the debt. The loans are characterized by the distinct possibility that the Company will sustain some loss if deficiencies are not corrected. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) DOUBTFUL. Exhibits the inherent weaknesses of a substandard credit. Additional characteristics exist that make collection or liquidation in full highly questionable and improbable, on the basis of currently known facts, conditions and values. Possibility of loss is extremely high, but because of certain important and reasonable specific pending factors which may work to the advantage and strengthening of the credit, an estimated loss cannot yet be determined. LOSS. Credit is considered uncollectible and of such little value that it does not warrant consideration as an active asset. There may be some recovery or salvage value, but there is doubt as to whether, how much or when the recovery would occur. Commercial loan credit quality indicators by class of financing receivables are summarized as follows: December 31, 2018 CRE C&I Multifamily Remaining Total (1) (in thousands) Rating: Pass $ 7,698,373 $ 14,518,566 $ 8,072,407 $ 7,466,419 $ 37,755,765 Special mention 628,097 772,704 204,262 67,313 1,672,376 Substandard 373,356 408,515 32,446 36,255 850,572 Doubtful 4,655 38,373 — 60,017 103,045 Total commercial loans $ 8,704,481 $ 15,738,158 $ 8,309,115 $ 7,630,004 $ 40,381,758 (1) Financing receivables include LHFS. December 31, 2017 CRE C&I Multifamily Remaining Total (1) (in thousands) Rating: Pass $ 8,281,626 $ 13,176,248 $ 8,123,727 $ 7,059,627 $ 36,641,228 Special mention 645,835 941,683 105,225 29,657 1,722,400 Substandard 317,510 398,325 45,483 21,747 783,065 Doubtful 34,254 71,233 — 63,708 169,195 Total commercial loans $ 9,279,225 $ 14,587,489 $ 8,274,435 $ 7,174,739 $ 39,315,888 (1) Financing receivables include LHFS. Consumer Lending Asset Quality Indicators-Credit Score Consumer financing receivables for which either an internal or external credit score is a core component of the allowance model are summarized by credit score as follows: Credit Score Range (2) December 31, 2018 December 31, 2017 (dollars in thousands) RICs and auto loans (3) Percent RICs and auto loans Percent No FICO ®(1) $ 3,136,449 10.7 % $ 3,429,190 13.6 % <600 14,884,385 50.7 % 13,445,032 53.9 % 600-639 5,185,412 17.7 % 4,332,278 17.4 % 640-679 4,758,394 16.2 % 3,759,621 15.1 % 680-719 289,270 1.0 % — — % 720-759 283,052 1.0 % — — % >=760 798,258 2.7 % — — % Total $ 29,335,220 100.0 % $ 24,966,121 100.0 % (1) Consists primarily of loans for which credit scores are not considered in the ALLL model. (2) Credit scores updated quarterly. (3) Reflects Chrysler portfolio originated for SBNA beginning in July 2018. Consumer Lending Asset Quality Indicators-FICO and LTV Ratio NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) For both residential and home equity loans, loss severity assumptions are incorporated in the loan and lease loss reserve models to estimate loan balances that will ultimately charge off. These assumptions are based on recent loss experience within various current LTV bands within these portfolios. LTVs are refreshed quarterly by applying Federal Housing Finance Agency Home price index changes at a state-by-state level to the last known appraised value of the property to estimate the current LTV. The Company's ALLL incorporates the refreshed LTV information to update the distribution of defaulted loans by LTV as well as the associated loss given default for each LTV band. Reappraisals on a recurring basis at the individual property level are not considered cost-effective or necessary; however, reappraisals are performed on certain higher risk accounts to support line management activities, default servicing decisions, or when other situations arise for which the Company believes the additional expense is warranted. Residential mortgage and home equity financing receivables by LTV and FICO range are summarized as follows: Residential Mortgages (1)(3) December 31, 2018 N/A (2) LTV<=70% 70.01-80% 80.01-90% 90.01-100% 100.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (2) $ 87,808 $ 4,465 $ — $ — $ 423 $ — $ — $ 92,696 <600 69 225,647 54,101 35,625 26,863 2,450 4,604 349,359 600-639 35 157,281 47,712 34,124 37,901 943 1,544 279,540 640-679 — 308,780 112,811 76,512 101,057 1,934 1,767 602,861 680-719 — 560,920 266,877 148,283 175,889 3,630 3,593 1,159,192 720-759 50 1,061,969 535,840 210,046 218,177 4,263 6,704 2,037,049 >=760 213 3,518,916 1,253,733 354,629 220,695 6,477 9,102 5,363,765 Grand Total $ 88,175 $ 5,837,978 $ 2,271,074 $ 859,219 $ 781,005 $ 19,697 $ 27,314 $ 9,884,462 (1) Excludes LHFS. (2) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (3) Allowance model considers LTV for financing receivables in first lien position for the Company and combined LTV ("CLTV") for financing receivables in second lien position for the Company. Home Equity Loans and Lines of Credit (2) December 31, 2018 N/A (1) LTV<=70% 70.01-90% 90.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (1) $ 133,436 $ 841 $ 197 $ — $ 5 $ 134,479 <600 1,130 209,536 64,202 14,948 5,988 295,804 600-639 398 166,384 48,543 7,932 2,780 226,037 640-679 919 305,642 112,937 10,311 6,887 436,696 680-719 869 527,374 215,824 17,231 13,482 774,780 720-759 1,139 732,467 292,516 20,812 14,677 1,061,611 >=760 2,280 1,844,830 614,221 46,993 27,939 2,536,263 Grand Total $ 140,171 $ 3,787,074 $ 1,348,440 $ 118,227 $ 71,758 $ 5,465,670 (1) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (2) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. Residential Mortgages (1)(3) December 31, 2017 N/A (2) LTV<=70% 70.01-80% 80.01-90% 90.01-100% 100.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (2) $ 174,426 $ 6,759 $ 1,214 $ — $ — $ — $ — $ 182,399 <600 21 220,738 55,108 35,617 23,834 2,505 6,020 343,843 600-639 45 155,920 42,420 35,009 34,331 2,696 6,259 276,680 640-679 37 320,248 94,601 90,582 86,004 3,011 2,641 597,124 680-719 98 554,058 236,408 136,916 145,545 3,955 10,317 1,087,297 720-759 92 952,532 480,900 177,700 179,648 4,760 8,600 1,804,232 >=760 588 3,019,418 1,066,103 262,490 185,579 8,418 12,594 4,555,190 Grand Total $ 175,307 $ 5,229,673 $ 1,976,754 $ 738,314 $ 654,941 $ 25,345 $ 46,431 $ 8,846,765 (1) Excludes LHFS. (2) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (3) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Home Equity Loans and Lines of Credit (2) December 31, 2017 N/A (1) LTV<=70% 70.01-90% 90.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (1) $ 154,690 $ 536 $ 238 $ — $ — $ 155,464 <600 8,064 190,657 64,554 16,634 22,954 302,863 600-639 6,276 158,461 61,250 9,236 9,102 244,325 640-679 6,745 297,003 127,347 19,465 14,058 464,618 680-719 8,875 500,234 258,284 24,675 20,261 812,329 720-759 8,587 724,831 332,508 30,526 19,119 1,115,571 >=760 17,499 1,917,373 768,905 73,573 35,213 2,812,563 Grand Total $ 210,736 $ 3,789,095 $ 1,613,086 $ 174,109 $ 120,707 $ 5,907,733 (1) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (2) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. TDR Loans The following table summarizes the Company’s performing and non-performing TDRs at the dates indicated: (in thousands) December 31, 2018 December 31, 2017 Performing $ 5,014,224 $ 5,860,119 Non-performing 908,128 982,868 Total (1) $ 5,922,352 $ 6,842,987 (1) Excludes LHFS. Commercial Loan TDRs All of the Company’s commercial loan modifications are based on the circumstances of the individual customer, including specific customers' complete relationships with the Company. Loan terms are modified to meet each borrower’s specific circumstances at a point in time and may allow for modifications such as term extensions and interest rate reductions. Modifications for commercial loan TDRs generally, although not always, result in bifurcation of the original loan into A and B notes. The A note is restructured to al

OPERATING LEASE ASSETS, NET

OPERATING LEASE ASSETS, NET	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
OPERATING LEASE ASSETS, NET	OPERATING LEASE ASSETS, NET The Company has operating leases, including leased vehicles and commercial equipment vehicles and aircraft, which are included in the Company's Consolidated Balance Sheets as Operating lease assets, net. The leased vehicle portfolio consists primarily of leases originated under the Chrysler Agreement. Operating lease assets, net consisted of the following as of December 31, 2018 and December 31, 2017 : (in thousands) December 31, 2018 December 31, 2017 Leased vehicles $ 18,737,338 $ 14,751,568 Less: accumulated depreciation (3,518,025 ) (3,333,125 ) Depreciated net capitalized cost 15,219,313 11,418,443 Origination fees and other costs 66,967 27,246 Manufacturer subvention payments (1,307,424 ) (1,047,113 ) Leased vehicles, net 13,978,856 10,398,576 Commercial equipment vehicles and aircraft, gross 130,274 93,981 Less: accumulated depreciation (30,337 ) (18,249 ) Commercial equipment vehicles and aircraft, net 99,937 75,732 Total operating lease assets, net $ 14,078,793 $ 10,474,308 The following summarizes the future minimum rental payments due to the Company as lessor under operating leases as of December 31, 2018 (in thousands): 2019 $ 2,316,799 2020 1,652,894 2021 599,278 2022 34,250 2023 6,003 Thereafter 11,739 Total $ 4,620,963 Lease income was $2.4 billion , $2.0 billion , and $1.8 billion for the years ended December 31, 2018 , 2017 , and 2016 , respectively. During the years ended December 31, 2018 , 2017 , and 2016 the Company recognized $202.8 million , $127.2 million , and $66.9 million respectively, of net gains on the sale of operating lease assets that had been returned to the Company at the end of the lease term. These amounts are recorded within Miscellaneous income, net in the Company's Consolidated Statements of Operations . Lease expense was $1.8 billion , $1.6 billion , $1.3 billion for the years ended December 31, 2018 , 2017 , and 2016 , respectively.

PREMISES AND EQUIPMENT

PREMISES AND EQUIPMENT	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
PREMISES AND EQUIPMENT	PREMISES AND EQUIPMENT A summary of premises and equipment, less accumulated depreciation, follows: (in thousands) December 31, 2018 December 31, 2017 Land $ 87,531 $ 89,350 Office buildings 185,218 201,927 Furniture, fixtures, and equipment 427,245 434,591 Leasehold improvement 509,314 551,442 Computer software 990,429 1,002,260 Automobiles and other 1,475 1,146 Total premise and equipment 2,201,212 2,280,716 Less accumulated depreciation (1,395,272 ) (1,431,655 ) Total premises and equipment, net $ 805,940 $ 849,061 Depreciation expense for premises and equipment, included in Occupancy and equipment expenses in the Consolidated Statements of Operations, was $268.0 million , $300.0 million , and $282.2 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. During the year ended December 31, 2018 the Company sold 13 properties. The Company received net proceeds of $5.8 million from the sales, with a net gain of $2.1 million . The carrying value of these properties was $3.6 million . Of the 13 properties sold, the Company leased back one property and accounted for the transaction as a sale-leaseback resulting in recognition of a $154.0 thousand gain on the date of the transaction, and deferral of the remaining $1.3 million gain. Gain on sale of premises and equipment are included within Miscellaneous income in the Consolidated Statements of Operations. In 2017 , the Company sold and leased back ten properties. The Company received net proceeds of $58.0 million in connection with the sales. The carrying value of the properties sold was $15.3 million . The Company accounted for the transaction as a sale-leaseback resulting in recognition of a $31.2 million gain on the date of the transactions, and deferral of the remaining $11.5 million . The Company sold eight properties for a $ 2.4 million gain in 2016 .

VIEs

VIEs	12 Months Ended
	Dec. 31, 2018
Variable Interest Entity and Securitizations [Abstract]
VIEs	VIEs The Company transfers RICs and vehicle leases 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 GAAP and the Company may or may not consolidate these VIEs on its Consolidated Balance Sheets. The collateral borrowings under credit facilities and securitization notes payable of the Company’s consolidated VIEs remain on the Consolidated Financial Statements . The Company recognizes finance charges, fee income, and provision for credit losses on the RICs, and leased vehicles and interest expense on the debt. Revolving credit facilities generally also utilize entities that are considered VIEs, which are included on the Consolidated Balance Sheets. The Company also uses a titling trust to originate and hold its leased vehicles and the associated leases in order to facilitate the pledging of leases to financing facilities or the sale of leases to other parties without incurring the costs and administrative burden of retitling the leased vehicles. This titling trust is considered a VIE. On-balance sheet VIEs The assets of consolidated VIEs, that are included in the Company's Consolidated Financial Statements , presented based upon the legal transfer of the underlying assets in order to reflect legal ownership, and that can be used only to settle obligations of the consolidated VIEs and the liabilities of those entities for which creditors (or beneficial interest holders) do not have recourse to the Company's general credit were as follows (1) : NOTE 7. VIEs (continued) (in thousands) December 31, 2018 December 31, 2017 Assets Restricted cash $ 1,582,158 $ 1,995,557 Loans (2)(3) 24,098,638 22,679,381 Operating lease assets, net 13,978,855 10,160,327 Various other assets 685,383 747,101 Total Assets $ 40,345,034 $ 35,582,366 Liabilities Notes payable (3) $ 31,949,839 $ 28,469,999 Various other liabilities 122,010 197,969 Total Liabilities $ 32,071,849 $ 28,667,968 (1) Certain amounts shown above are greater than the amounts shown in the corresponding line items in the accompanying Consolidated Balance Sheets due to intercompany eliminations between the VIEs and other entities consolidated by the Company. For example, for most of its securitizations, the Company retains one or more of the lowest tranches of bonds. Rather than showing investment in bonds as an asset and the associated debt as a liability, these amounts are eliminated in consolidation as required by GAAP. (2) Includes zero and $1.1 billion of RICs HFS at December 31, 2018 and December 31, 2017 , respectively. (3) Reflects the impacts of purchase accounting. The Company retains servicing rights for receivables transferred to the Trusts and receives a monthly servicing fee on the outstanding principal balance. Supplemental fees, such as late charges, for servicing the receivables are reflected in Miscellaneous income, net. As of December 31, 2018 and December 31, 2017 , the Company was servicing $27.1 billion and $26.2 billion , respectively, of gross RICs that have been transferred to consolidated Trusts. The remainder of the Company’s RICs remains unpledged. A summary of the cash flows received from the consolidated securitization Trusts for the years ended December 31, 2018 , 2017 and 2016 is as follows: Year Ended December 31, (in thousands) 2018 2017 2016 Assets securitized $ 26,650,284 $ 18,442,793 $ 15,828,921 Net proceeds from new securitizations (1) $ 17,338,880 $ 14,126,211 $ 13,319,530 Net proceeds from sale of retained bonds 1,059,694 499,354 436,812 Cash received for servicing fees (2) 887,988 866,210 787,778 Net distributions from Trusts (2) 2,767,509 2,613,032 1,748,013 Total cash received from Trusts $ 22,054,071 $ 18,104,807 $ 16,292,133 (1) Includes additional advances on existing securitizations. (2) These amounts are not reflected in the accompanying Consolidated SCF because the cash flows are between the VIEs and other entities included in the consolidation. Off-balance sheet VIEs During the years ended December 31, 2018 , 2017 and 2016 , the Company sold $2.9 billion , $2.6 billion and $886.3 million , respectively, of gross RICs to VIEs in off-balance sheet securitizations for a loss (excluding lower of cost or market adjustments, if any) of $20.7 million , $13.0 million and $10.5 million , respectively, recorded in Miscellaneous income, net in the Consolidated Financial Statements . Beginning in 2017, the transactions were executed under the Company's securitization platforms with Santander. Santander, as a majority owned affiliate, holds eligible vertical interests in notes and certificates of not less than 5% to comply with the DFA's risk retention rules. As of December 31, 2018 and December 31, 2017 , the Company was servicing $4.1 billion and $3.4 billion , respectively, of gross RICs that have been sold in off-balance sheet securitizations and were subject to an optional clean-up call. The portfolio was comprised as follows: (in thousands) December 31, 2018 December 31, 2017 Santander Private Auto Issuing Note ("SPAIN") trust $ 3,461,793 $ 2,024,016 Total serviced for related parties 3,461,793 2,024,016 Chrysler Capital securitizations 611,050 1,404,232 Total serviced for third parties 611,050 1,404,232 Total serviced for other portfolio $ 4,072,843 $ 3,428,248 NOTE 7. VIEs (continued) Other than repurchases of sold assets due to standard representations and warranties, the Company has no exposure to loss as a result of its involvement with these VIEs. A summary of the cash flows received from the Trusts for the years ended December 31, 2018 , 2017 and 2016 is as follows: Year Ended December 31, (in thousands) 2018 2017 2016 Receivables securitized (1) $ 2,905,922 $ 2,583,341 $ 904,108 Net proceeds from new securitizations $ 2,909,794 $ 2,588,227 $ 876,592 Cash received for servicing fees 43,859 35,682 47,804 Total cash received from Trusts $ 2,953,653 $ 2,623,909 $ 924,396 (1) Represents the UPB at the time of original securitization.

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLES	GOODWILL AND OTHER INTANGIBLES Goodwill Goodwill is assigned to reporting units, which are operating segments or one level below an operating segment, as of the acquisition date. The following table presents the Company's goodwill by its reporting units at December 31, 2018 : (in thousands) Consumer and Business Banking Commercial Banking CIB SC Total Goodwill at December 31, 2018 $ 1,880,304 $ 1,412,995 $ 131,130 $ 1,019,960 $ 4,444,389 During 2018, the reportable segments (and reporting units) formerly known as Commercial Banking and CRE were combined and presented as Commercial Banking. Refer to Note 23 for further discussion on this change in reportable segments. There were no additions or removals of underlying lines of business in connection with this reporting change. As a result, goodwill assigned to these former reporting units of $542.6 million and $870.4 million , for Commercial Banking and CRE, respectively, have been combined. Also during 2018, Santander renamed its Global and Corporate Banking ("GCB") business to CIB to more accurately reflect its business strategy and business proposition to clients, and to align with the name used by a majority of its competitors in the industry. There were no changes to the composition of the reportable segment or reporting unit as a result of this change. There were no disposals, additions or impairments of goodwill for the year ended December 31, 2018 . There were no disposals, additions or re-allocations of goodwill for the years ended December 31, 2017 or December 31, 2016 . After conducting an analysis of the fair value of each reporting unit as of October 1, 2017, the Company determined that the full amount of goodwill attributed to Santander BanCorp of $10.5 million was impaired and, as a result, it was written off, primarily due to the unfavorable economic environment in Puerto Rico and the additional adverse effects of Hurricane Maria. No impairments of goodwill attributed to other reporting units were identified. There were no impairments of goodwill for the year ended December 31, 2016 . The Company evaluates goodwill for impairment at the reporting unit level. The Company completes its annual goodwill impairment test as of October 1 each year. The Company conducted its last annual goodwill impairment tests as of October 1, 2018 using generally accepted valuation methods. NOTE 8. GOODWILL AND OTHER INTANGIBLES (continued) Other Intangible Assets The following table details amounts related to the Company's intangible assets subject to amortization for the dates indicated. December 31, 2018 December 31, 2017 (in thousands) Net Carrying Amount Accumulated Amortization Net Carrying Amount Accumulated Amortization Intangibles subject to amortization: Dealer networks $ 387,196 $ (192,804 ) $ 426,411 $ (153,589 ) Chrysler relationship 65,000 (73,750 ) 80,000 (58,750 ) Trade name 14,700 (3,300 ) 15,900 (2,100 ) Other intangibles 8,297 (46,894 ) 13,442 (56,021 ) Total intangibles subject to amortization $ 475,193 $ (316,748 ) $ 535,753 $ (270,460 ) At December 31, 2018 and December 31, 2017 , the Company did no t have any intangibles, other than goodwill, that were not subject to amortization. Amortization expense on intangible assets was $60.7 million , $61.5 million , and $70.0 million the years ended December 31, 2018 , 2017 , and 2016 , respectively. The estimated aggregate amortization expense related to intangibles, excluding any impairment charges, for each of the five succeeding calendar years ending December 31 is: Year Calendar Year Amount (in thousands) 2019 $ 55,717 2020 58,929 2021 42,903 2022 39,901 2023 28,649 Thereafter 249,094

OTHER ASSETS

OTHER ASSETS	12 Months Ended
	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
OTHER ASSETS	OTHER ASSETS The following is a detail of items that comprised other assets at December 31, 2018 and 2017 : (in thousands) December 31, 2018 December 31, 2017 Deferred tax assets $ 625,087 $ 771,652 Accrued interest receivable 566,602 577,585 Derivative assets at fair value 511,916 448,977 Other repossessed assets 225,890 212,882 Equity method investments 204,687 194,434 MSRs 152,121 149,197 OREO 107,868 130,777 Miscellaneous assets, receivables and prepaid expenses 1,259,165 1,160,901 Total other assets $ 3,653,336 $ 3,646,405 Other assets is comprised of: • Deferred tax asset, net - Refer to Note 15 of these Consolidated Financial Statements for more information on tax-related activities. • Derivative assets at fair value - Refer to the offsetting of financial assets table in Note 14 to these Consolidated Financial Statements for the detail of these amounts. NOTE 9. OTHER ASSETS (continued) • Equity method investments - The Company makes certain equity investments in various limited partnerships, some of which are considered VIEs, that invest in and lend to qualified community development entities, such as renewable energy investments, through the New Market Tax Credits ("NMTC") and CRA programs. The Company acts only in a limited partner capacity in connection with these partnerships, so the Company has determined that it is not the primary beneficiary of the partnerships because it does not have the power to direct the activities of the partnerships that most significantly impact the partnerships' economic performance. • MSRs - See further discussion on the valuation of the MSRs in Note 16 . • Miscellaneous assets and receivables includes $373.2 million and $292.2 million of Income tax receivables and $199.0 million and $172.5 million of prepaid expenses at December 31, 2018 and 2017 , respectively. In addition subvention receivables in connection with the Chrysler Agreement, investment and capital market receivables, derivatives trading receivables, and unapplied payments are also included in miscellaneous assets. The 2018 increase was due to increases in subvention receivables, income tax receivables, and due from others related to broker dealer activities offset by decreases in wire transfer clearing, and investment proceeds receivable.

DEPOSITS AND OTHER CUSTOMER ACC

DEPOSITS AND OTHER CUSTOMER ACCOUNTS	12 Months Ended
	Dec. 31, 2018
Deposits [Abstract]
DEPOSITS AND OTHER CUSTOMER ACCOUNTS	DEPOSITS AND OTHER CUSTOMER ACCOUNTS Deposits and other customer accounts are summarized as follows: December 31, 2018 December 31, 2017 (dollars in thousands) Balance Percent of total deposits Balance Percent of total deposits Interest-bearing demand deposits $ 8,827,704 14.4 % $ 8,784,597 14.4 % Non-interest-bearing demand deposits 14,420,450 23.4 % 15,402,235 25.3 % Savings 5,875,787 9.6 % 5,903,897 9.7 % Customer repurchase accounts 654,843 1.1 % 802,119 1.4 % Money market 24,263,929 39.4 % 24,530,661 40.3 % CDs 7,468,667 12.1 % 5,407,594 8.9 % Total Deposits (1) $ 61,511,380 100.0 % $ 60,831,103 100.0 % (1) Includes foreign deposits, as defined by the FRB, of $8.4 billion and $9.1 billion at December 31, 2018 and December 31, 2017 , respectively. Deposits collateralized by investment securities, loans, and other financial instruments totaled $2.7 billion and $2.3 billion at December 31, 2018 and December 31, 2017 , respectively. Demand deposit overdrafts that have been reclassified as loan balances were $50.0 million and $38.9 million at December 31, 2018 and December 31, 2017 , respectively. Interest expense on deposits and other customer accounts is summarized as follows: YEAR ENDED DECEMBER 31, (in thousands) 2018 2017 2016 Interest-bearing demand deposits $ 41,481 $ 21,628 $ 40,262 Savings 12,325 11,004 12,723 Customer repurchase accounts 1,761 1,932 1,750 Money market 245,794 132,993 126,418 CDs 87,767 73,487 95,869 Total Deposits $ 389,128 $ 241,044 $ 277,022 The following table sets forth the maturity of the Company's CDs of $100,000 or more at December 31, 2018 as scheduled to mature contractually: (in thousands) Three months or less $ 731,665 Over three through six months 513,196 Over six through twelve months 1,349,221 Over twelve months 1,191,485 Total $ 3,785,568 NOTE 10. DEPOSITS AND OTHER CUSTOMER ACCOUNTS (continued) The following table sets forth the maturity of all the Company's CDs at December 31, 2018 as scheduled to mature contractually: (in thousands) 2019 $ 5,265,491 2020 956,587 2021 932,662 2022 247,684 2023 60,209 Thereafter 6,034 Total $ 7,468,667 At December 31, 2018 and December 31, 2017 , the Company had $1.9 billion and $1.3 billion of CDs greater than $250 thousand.

BORROWINGS

BORROWINGS	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
BORROWINGS	BORROWINGS Total borrowings and other debt obligations at December 31, 2018 were $45.0 billion , compared to $39.0 billion at December 31, 2017 . The Company's debt agreements impose certain limitations on dividends other payments and transactions. The Company is currently in compliance with these limitations. Periodically, as part of the Company's wholesale funding management, it opportunistically repurchases outstanding borrowings in the open market and subsequently retires the obligations. Bank The Bank had no new securities issuances and did not repurchase any outstanding borrowings in the open market during the year ended December 31, 2018 . During 2017 , the Bank had the following borrowings and other debt obligations activity: • repurchased $1.0 billion of its 2.00% senior notes due 2018 and senior floating rate notes due 2018. • repurchased $14.2 million of its real estate investment trust (“REIT") preferred debt. • repurchased $307.9 million of its 8.75% subordinated notes due 2018. The Company recorded a loss on debt extinguishment related to this repurchase of $14.0 million . • On February 4th, 2019 the Bank paid off its subordinated term loan due February 2019. SHUSA During 2018 , the Company issued $1.4 billion in debt consisting of: • $427.9 million of its senior floating rate notes • $1.0 billion of its 4.45% senior notes due 2021 During 2018 , the Company repurchased the following borrowings and other debt obligations: • $244.6 million of its 3.45% senior notes • $821.3 million of its 2.7% senior notes • $154.6 million of its Sovereign Cap Trust IX subordinated debentures and common securities. During 2017 , the Company issued $4.7 billion in debt consisting of: • $1.4 billion of its 3.70% senior notes due 2022 • $759.7 million of its senior floating rate notes due 2019 • $1.1 billion of its 4.40% senior notes due 2027 • $418.5 million of its senior floating rate notes due 2020 • $1.0 billion of its 3.40% senior notes due 2023 NOTE 11. BORROWINGS (continued) During 2017 , the Company repurchased the following borrowings and other debt obligations: • $255.4 million of its 3.45% senior notes • $80.3 million of its Capital Trust VI junior subordinated debentures due June 2036 The Company recorded loss on debt extinguishment related to debt repurchases and early repayments at SHUSA of $3.5 million and $30.3 million for the years ended December 31, 2018 , and 2017 , respectively. Parent Company and other Subsidiary Borrowings and Debt Obligations The following table presents information regarding the Parent Company and its subsidiaries' borrowings and other debt obligations at the dates indicated: December 31, 2018 December 31, 2017 (dollars in thousands) Balance Effective Rate Balance Effective Rate Parent Company 3.45% senior notes, due August 2018 $ — — % $ 244,317 3.62 % 2.70% senior notes, due May 2019 178,628 2.82 % 998,349 2.82 % 2.65% senior notes, due April 2020 997,848 2.82 % 996,238 2.82 % 4.45% senior notes, due December 2021 995,540 4.61 % — — % 3.70% senior notes, due March 2022 1,440,063 3.74 % 1,440,044 3.74 % 3.40% senior notes, due January 2023 994,831 3.54 % 993,662 3.54 % 4.50% senior notes, due July 2025 1,095,966 4.56 % 1,095,449 4.56 % 4.40% senior notes, due July 2027 1,049,799 4.40 % 1,049,787 4.40 % Junior subordinated debentures - Sovereign Capital Trust IX, due July 2036 — — % 149,462 3.14 % Common securities - Sovereign Capital Trust IX — — % 4,640 3.14 % Senior notes, due July 2019 (1) 388,717 3.22 % 388,565 2.31 % Senior notes, due September 2019 (1) 370,936 3.18 % 370,754 2.34 % Senior notes, due January 2020 (1) 302,619 3.22 % 302,494 2.40 % Senior notes, due September 2020 (2) 108,888 3.17 % 115,804 3.32 % Senior notes, due June 2022 (1) 427,850 3.38 % — — % Subsidiaries 2.00% subordinated debt, maturing through 2042 40,703 2.00 % 40,842 2.00 % Short-term borrowing, due within one year, maturing January 2019 44,000 2.40 % 24,000 1.38 % Total due to others overnight, due within one year, due July 2018 — — % 10,000 1.38 % Short-term borrowing, due within one year, maturing January 2019 15,900 0.38 % 37,546 0.25 % Short-term borrowings, due within one year, maturing through 2018 — — % 7,123 0.83 % Total Parent Company and subsidiaries' borrowings and other debt obligations $ 8,452,288 3.76 % $ 8,269,076 3.45 % (1) These notes bear interest at a rate equal to the three-month London Interbank Offered Rate (“LIBOR") plus 100 basis points per annum. (2) This note will bear interest at a rate equal to the three-month LIBOR plus 105 basis points per annum. Bank Borrowings and Debt Obligations The following table presents information regarding the Bank's borrowings and other debt obligations at the dates indicated: December 31, 2018 December 31, 2017 (dollars in thousands) Balance Effective Rate Balance Effective Rate 8.750% subordinated debentures, due May 2018 $ — — % $ 192,019 8.92 % Subordinated term loan, due February 2019 99,402 8.20 % 111,883 7.12 % FHLB advances, maturing through September 2021 4,850,000 2.74 % 1,950,000 1.53 % Securities sold under repurchase agreements — — % 150,000 1.56 % REIT preferred, callable May 2020 145,590 13.22 % 144,167 13.35 % Subordinated term loan, due August 2022 26,770 9.95 % 27,911 8.89 % Total Bank borrowings and other debt obligations $ 5,121,762 3.18 % $ 2,575,980 3.07 % The Bank had outstanding irrevocable letters of credit totaling $688.8 million from the FHLB of Pittsburgh at December 31, 2018 , used to secure uninsured deposits placed with the Bank by state and local governments and their political subdivisions. NOTE 11. BORROWINGS (continued) Revolving Credit Facilities The following tables present information regarding SC's credit facilities as of December 31, 2018 and December 31, 2017 , respectively: December 31, 2018 (dollars in thousands) Balance Committed Amount Effective Rate Assets Pledged Restricted Cash Pledged Warehouse line, maturing on various dates (1) $ 314,845 $ 1,250,000 4.83 % $ 458,390 $ — Warehouse line, due November 2020 317,020 500,000 3.53 % 359,214 525 Warehouse line, due August 2020 (2) 2,154,243 4,400,000 3.79 % 2,859,113 4,831 Warehouse line, due October 2020 242,377 2,050,000 5.94 % 345,599 120 Warehouse line, due August 2019 53,584 500,000 8.34 % 78,790 — Warehouse line, due November 2020 1,000,000 1,000,000 3.32 % 1,430,524 6 Warehouse line, due October 2019 97,200 350,000 4.35 % 108,418 328 Repurchase facility, due April 2019 (3) 167,118 167,118 3.84 % 235,540 — Repurchase facility, due March 2019 (3) 131,827 131,827 3.54 % 166,308 — Total SC revolving credit facilities $ 4,478,214 $ 10,348,945 3.92 % $ 6,041,896 $ 5,810 (1) As of December 31, 2018 , one-half of the outstanding balance on this facility matures in March 2019 and the remaining balance matures in March 2020. (2) This line is held exclusively for financing of Chrysler Capital leases. (3) These repurchase facilities are collateralized by securitization notes payable retained by SC. These facilities have rolling maturities of up to one year . As the borrower, SC is exposed to liquidity risk due to changes in the market value of retrained securities pledged. In some instances, SC places or receives cash collateral with counterparties under collateral arrangements associated with SC's repurchase agreements. December 31, 2017 (dollars in thousands) Balance Committed Amount Effective Assets Pledged Restricted Cash Pledged Warehouse line, maturing on various dates $ 339,145 $ 1,250,000 2.53 % $ 461,353 $ 12,645 Warehouse line, due November 2019 435,220 500,000 1.92 % 521,365 16,866 Warehouse line, due August 2019 2,044,843 3,900,000 2.96 % 2,929,890 53,639 Warehouse line, due October 2019 226,577 1,800,000 4.95 % 311,336 6,772 Warehouse line, due October 2019 81,865 400,000 4.09 % 114,021 3,057 Warehouse line, due January 2018 336,484 500,000 2.87 % 473,208 — Warehouse line, due November 2019 403,999 1,000,000 2.66 % 546,782 14,729 Warehouse line, due October 2018 235,700 300,000 2.84 % 289,634 10,474 Warehouse line, due December 2018 — 300,000 1.49 % — — Repurchase facility, maturing on various dates 325,775 325,775 3.24 % 474,188 13,842 Repurchase facility, due April 2018 202,311 202,311 2.67 % 264,120 — Repurchase facility, due March 2018 147,500 147,500 3.91 % 222,108 — Repurchase facility, due March 2018 68,897 68,897 3.04 % 95,762 — Line of credit with related party, due December 2018 — 1,000,000 3.09 % — — Line of credit with related party, due December 2018 750,000 750,000 1.33 % — — Total SC revolving credit facilities $ 5,598,316 $ 12,444,483 2.73 % $ 6,703,767 $ 132,024 NOTE 11. BORROWINGS (continued) Secured Structured Financings The following tables present information regarding SC's secured structured financings as of December 31, 2018 and December 31, 2017 , respectively: December 31, 2018 (dollars in thousands) Balance Initial Note Amounts Issued (3) Initial Weighted Average Interest Rate Range Collateral (2) Restricted Cash SC public securitizations, maturing on various dates between April 2021 and April 2026 (1) $ 19,225,169 $ 41,380,952 1.16% - 3.53% $ 24,912,904 $ 1,541,714 SC privately issued amortizing notes, maturing on various dates between June 2019 and September 2024 7,676,351 11,305,368 0.88% - 3.17% 10,383,266 35,201 Total SC secured structured financings $ 26,901,520 $ 52,686,320 .88% - 3.53% $ 35,296,170 $ 1,576,915 (1) Securitizations executed under Rule 144A of the Securities Act of 1933, as amended (the "Securities Act"), are included within this balance. (2) Secured structured financings may be collateralized by SC's collateral overages of other issuances. (3) Excludes initial note amounts issued balance for any securitizations deals that were paid off during the year or any new top ups for the year December 31, 2017 (dollars in thousands) Balance Initial Note Amounts Issued Initial Weighted Average Interest Rate Range Collateral Restricted Cash SC public securitizations, maturing on various dates between January 2019 and September 2024 (1)(2) $ 14,995,304 $ 36,800,642 0.89% - 2.80% $ 19,873,621 $ 1,470,459 SC privately issued amortizing notes, maturing on various dates between March 2018 and September 2028 (1) 7,564,637 12,278,282 0.88% - 4.09% 9,232,658 377,300 Total SC secured structured financings $ 22,559,941 $ 49,078,924 0.88% - 4.09% $ 29,106,279 $ 1,847,759 (1) SC has entered into various securitization transactions involving its retail automobile installment loans and leases. These transactions are accounted for as secured financings and therefore both the securitized RICs and the related securitization debt issued by SPEs remain on the Consolidated Balance Sheets . The maturity of this debt is based on the timing of repayments from the securitized assets. (2) Securitizations executed under Rule 144A of the Securities Act are included within this balance. Most of SC's secured structured financings are in the form of public, SEC-registered securitizations. SC 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. SC's securitizations and private issuances are collateralized by RICs or vehicle leases. As of December 31, 2018 and December 31, 2017 , SC had private issuances of notes backed by vehicle leases outstanding totaling $7.8 billion and $3.7 billion , respectively. The following table sets forth the maturities of the Company's consolidated borrowings and debt obligations at December 31, 2018 : (in thousands) 2019 $ 4,988,996 2020 9,427,828 2021 7,009,986 2022 9,282,303 2023 5,661,986 Thereafter 8,582,685 Total $ 44,953,784

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS)	ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS) The following table presents the components of accumulated other comprehensive income/(loss), net of related tax, for the years ended December 31, 2018 , 2017 , and 2016 respectively. Total Other Total Accumulated Year Ended December 31, 2018 December 31, 2017 December 31, 2018 (in thousands) Pretax Tax Net Activity Beginning Net Ending Change in accumulated OCI on cash flow hedge derivative financial instruments $ (6,225 ) $ (848 ) $ (7,073 ) Reclassification adjustment for net losses on cash flow hedge derivative financial instruments (1) 4,781 (1,504 ) 3,277 Net unrealized (losses) on cash flow hedge derivative financial instruments (1,444 ) (2,352 ) (3,796 ) $ (6,388 ) $ (3,796 ) $ — Cumulative impact of adoption of new ASU (4) (9,629 ) Net unrealized (losses) on cash flow hedge derivative financial instruments upon adoption (13,425 ) (19,813 ) Change in unrealized (losses) on investments in debt securities AFS and HTM (84,316 ) (3,577 ) (87,893 ) Reclassification adjustment for net losses included in net income/(expense) on non-OTTI securities (2) 6,717 285 7,002 Net unrealized (losses) on investments in debt securities AFS and HTM (77,599 ) (3,292 ) (80,891 ) (140,498 ) (80,891 ) Cumulative impact of adoption of new ASU (4) (24,378 ) Net unrealized (losses) on investments in debt securities AFS and HTM - upon adoption (105,269 ) (245,767 ) Pension and post-retirement actuarial (loss) (3) 7,527 (6,967 ) 560 (51,545 ) 560 Cumulative impact of adoption of new ASU (4) (5,087 ) Pension and post-retirement actuarial gain upon adoption (4,527 ) (56,072 ) As of December 31, 2018 $ (71,516 ) $ (12,611 ) $ (84,127 ) $ (198,431 ) $ (123,221 ) $ (321,652 ) (1) Net gains/(losses) reclassified into Interest on borrowings and other debt obligations in the Consolidated Statements of Operations for settlements of interest rate swap contracts designated as cash flow hedges. (2) Net (gains)/losses reclassified into Net gain on sale of investment securities sales in the Consolidated Statements of Operations for the sale of AFS securities. (3) Included in the computation of net periodic pension costs. (4) Includes impact of other comprehensive income reclassified to Retained earnings as a result of the adoption of ASU 2018-02. Refer to Note 1 for further discussion. NOTE 12. ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS) (continued) Total Other Total Accumulated Year Ended December 31, 2017 December 31, 2016 December 31, 2017 (in thousands) Pretax Tax Net Activity Beginning Net Ending Change in accumulated OCI on cash flow hedge derivative financial instruments $ 10,620 $ 7,508 $ 18,128 Reclassification adjustment for net (gains) on cash flow hedge derivative financial instruments (1) (15,005 ) (2,786 ) (17,791 ) Net unrealized (losses) on cash flow hedge derivative financial instruments (4,385 ) 4,722 337 $ (6,725 ) $ 337 $ (6,388 ) Change in unrealized (losses) on investment securities AFS (17,972 ) 6,694 (11,278 ) Reclassification adjustment for net losses included in net income/(expense) on non-OTTI securities (2) 2,444 (910 ) 1,534 Net unrealized (losses) on investment securities AFS (15,528 ) 5,784 (9,744 ) (130,754 ) (9,744 ) (140,498 ) Pension and post-retirement actuarial gain (3) 4,954 (770 ) 4,184 (55,729 ) 4,184 (51,545 ) As of December 31, 2017 $ (14,959 ) $ 9,736 $ (5,223 ) $ (193,208 ) $ (5,223 ) $ (198,431 ) (1) Net gains/(losses) reclassified into Interest on borrowings and other debt obligations in the Consolidated Statements of Operations for settlements of interest rate swap contracts designated as cash flow hedges. (2) Net (gains)/losses reclassified into Net gain on sale of investment securities sales in the Consolidated Statements of Operations for the sale of AFS securities. (3) Included in the computation of net periodic pension costs. Total Other Total Accumulated For the Year Ended December 31, 2016 December 31, 2015 December 31, 2016 (in thousands) Pretax Tax Net Activity Beginning Net Ending Change in accumulated OCI on cash flow hedge derivative financial instruments $ 1,203 $ (130 ) $ 1,073 Reclassification adjustment for net losses on cash flow hedge derivative financial instruments (1) 9,848 (1,065 ) 8,783 Net unrealized gains on cash flow hedge derivative financial instruments 11,051 (1,195 ) 9,856 $ (16,581 ) $ 9,856 $ (6,725 ) Change in unrealized gains on investment securities AFS 4,040 (1,459 ) 2,581 Reclassification adjustment for net (gains) included in net income/(expense) on non-OTTI securities (2) (57,771 ) 20,350 (37,421 ) Reclassification adjustment for net losses included in net income/(expense) on OTTI securities (3) 44 (16 ) 28 Reclassification adjustment for net (gains) included in net income (57,727 ) 20,334 (37,393 ) Net unrealized (losses) on investment securities AFS (53,687 ) 18,875 (34,812 ) (95,942 ) (34,812 ) (130,754 ) Pension and post-retirement actuarial gain (4) 3,768 (1,490 ) 2,278 (58,007 ) 2,278 (55,729 ) As of December 31, 2016 $ (38,868 ) $ 16,190 $ (22,678 ) $ (170,530 ) $ (22,678 ) $ (193,208 ) (1) Net gains/(losses) reclassified into Interest on borrowings and other debt obligations in the Consolidated Statements of Operations for settlements of interest rate swap contracts designated as cash flow hedges. (2) Net (gains)/losses reclassified into Net gain on sale of investment securities sales in the Consolidated Statements of Operations for the sale of AFS securities. (3) Unrealized losses/(gains) previously recognized in accumulated OCI on securities for which OTTI was recognized during the period. See further discussion in Note 3 to the Consolidated Financial Statements . (4) Included in the computation of net periodic pension costs.

STOCKHOLDER'S EQUITY

STOCKHOLDER'S EQUITY	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
STOCKHOLDER'S EQUITY	STOCKHOLDER'S EQUITY At December 31, 2018 , the Company had 530,391,043 shares of common stock outstanding. Additional transactions with Santander that are disclosed within the Consolidated Statements of Stockholder's Equity that are shown net are disclosed within the table below: Impact to common stock and paid in capital (in thousands) Deferred tax asset on purchased assets $ 3,156 Adjustment to book value of assets purchased on January 1 277 February 2018 contribution 5,741 October 2018 contribution 45,846 December 2018 contribution 33,448 2018 Net contribution from shareholder $ 88,468 March 2017 cash contribution $ 9,000 December 2017 contribution (1) 15,317 December 2017 return of capital (1) (12,570 ) 2017 net contribution from shareholder $ 11,747 (1) - The December contribution was utilized to purchase certain assets and liabilities from other Santander subsidiaries. The fair value of the net assets acquired exceeded their carrying value by $12.6 million , which is recorded as a return of capital. Refer to Note 21 for additional details. On November 15, 2017, Santander contributed 34,598,506 shares of SC Common Stock purchased from DDFS LLC (“DDFS”), which reduced NCI and increased additional paid-in capital by $707.6 million . During the year ended December 31, 2018 , SC repurchased $182.6 million of SC Common Stock. In April 2006 , the Company’s Board of Directors authorized 8,000 shares of Series C Preferred Stock, and granted the Company authority to issue fractional shares of the Series C Preferred Stock. Dividends on each share of Series C Preferred Stock were payable quarterly, on a non-cumulative basis, at an annual rate of 7.30% , when and if declared by the Company's Board of Directors. In May 2006, the Company issued 8,000,000 depository shares of Series C Preferred Stock for net proceeds of $195.4 million . Each depository share represented 1/1000th ownership interest in a share of Series C Preferred Stock. As a holder of depository shares, the depository shareholder were entitled to all proportional rights and preferences of the Series C Preferred Stock. The Company’s Board of Directors declared cash dividends to preferred stockholders of $11.0 million , $14.6 million and $15.1 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. The shares of Series C Preferred Stock were redeemable in whole or in part for cash, at the Company’s option, at a redemption price of $25,000 per share (equivalent to $25 per depository share), subject to the prior approval of the OCC. On August 15th, 2018 the Company redeemed all outstanding shares of its Series C preferred stock.

DERIVATIVES

DERIVATIVES	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES	DERIVATIVES General Derivatives represent contracts between parties that usually require little or no initial net investment and result in one or both parties delivering cash or another type of asset to the other party based on a notional amount and an underlying asset, index, interest rate or future purchase commitment or option as specified in the contract. Derivative transactions are often measured in terms of notional amount, but this amount is generally not exchanged, is not recorded on the balance sheet, and does not represent the Company`s exposure to credit loss. The notional amount is the basis on which the financial obligation of each party to the derivative contract is calculated to determine required payments under the contract. The Company controls the credit risk of its derivative contracts through credit approvals, limits and monitoring procedures. The underlying asset is typically a referenced interest rate (commonly the OIS rate or LIBOR), security, credit spread or index. The Company’s capital markets and mortgage banking activities are subject to price risk. The Company employs various tools to measure and manage price risk in its portfolios. In addition, the Board of Directors has established certain limits relative to positions and activities. The level of price risk exposure at any given time depends on the market environment and expectations of future price and market movements and will vary from period to period. NOTE 14. DERIVATIVES (continued) See Note 16 for discussion of the valuation methodology for derivative instruments. Credit Risk Contingent Features The Company has entered into certain derivative contracts that require the posting of collateral to counterparties when those contracts are in a net liability position. The amount of collateral to be posted is based on the amount of the net liability and thresholds generally related to the Company's long-term senior unsecured credit ratings. In a limited number of instances, counterparties also have the right to terminate their International Swaps and Derivatives Association, Inc. ("ISDA") Master Agreements if the Company's ratings fall below a specified level, typically investment grade. As of December 31, 2018 , derivatives in this category had a fair value of $1.2 million . The credit ratings of the Company and the Bank are currently considered investment grade. During the fourth quarter of 2018 , no additional collateral would be required if there were a further 1 - or 2 - notch downgrade by either Standard & Poor's ("S&P") or Moody's Investor Services ("Moody's"). As of December 31, 2018 and December 31, 2017 , the aggregate fair value of all derivative contracts with credit risk contingent features (i.e., those containing collateral posting or termination provisions based on the Company's ratings) that were in a net liability position totaled $9.5 million and $10.4 million , respectively. The Company had $11.5 million and $15.7 million in cash and securities collateral posted to cover those positions as of December 31, 2018 and December 31, 2017 , respectively. Hedge Accounting Management uses derivative instruments designated as hedges to mitigate the impact of interest rate and foreign exchange rate movements on the fair value of certain assets and liabilities and on highly probable forecasted cash flows. These instruments primarily include interest rate swaps that have underlying interest rates based on key benchmark indices. The nature and volume of the derivative instruments used to manage interest rate risk depend on the level and type of assets and liabilities on the balance sheet and the risk management strategies for the current and anticipated interest rate environment. Interest rate swaps are generally used to convert fixed-rate assets and liabilities to variable rate assets and liabilities and vice versa. The Company utilizes interest rate swaps that have a high degree of correlation to the related financial instrument. Cash Flow Hedges The Company has outstanding interest rate swap agreements designed to hedge a portion of the Company’s floating rate assets and liabilities (including its borrowed funds). All of these swaps have been deemed highly effective cash flow hedges. The gain or loss on the derivative instrument is reported as a component of accumulated other comprehensive income and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings and is presented in the same Consolidated Statements of Operations line item as the earnings effect of the hedged item. The last of the hedges is scheduled to expire in December 2030 . The Company includes all components of each derivative's gain or loss in the assessment of hedge effectiveness. As of December 31, 2018 , the Company expected $26.8 million of gains/losses recorded in accumulated other comprehensive loss to be reclassified to earnings during the subsequent twelve months as the future cash flows occur. NOTE 14. DERIVATIVES (continued) Derivatives Designated in Hedge Relationships – Notional and Fair Values Derivatives designated as accounting hedges at December 31, 2018 and December 31, 2017 included: (dollars in thousands) Notional Amount Asset Liability Weighted Average Receive Rate Weighted Average Pay Rate Weighted Average Life (Years) December 31, 2018 Cash flow hedges: Pay fixed — receive variable interest rate swaps $ 4,176,105 $ 44,054 $ 10,503 2.67 % 1.74 % 2.07 Pay variable - receive fixed interest rate swaps 4,000,000 — 89,769 1.41 % 2.40 % 2.02 Interest rate floor 2,000,000 10,932 — 0.04 % — % 1.91 Total $ 10,176,105 $ 54,986 $ 100,272 1.66 % 1.66 % 2.02 December 31, 2017 Cash flow hedges: Pay fixed — receive variable interest rate swaps $ 5,183,511 $ 46,422 $ 4,458 0.05 % 0.14 % 2.12 Pay variable - receive fixed interest rate swaps 4,000,000 — 80,453 1.41 % 1.42 % 3.02 Interest rate floor 1,000,000 3,020 — — % — % 2.64 Total $ 10,183,511 $ 49,442 $ 84,911 0.58 % 0.63 % 2.53 Other Derivative Activities The Company also enters into derivatives that are not designated as accounting hedges under GAAP. The majority of these derivatives are customer-related derivatives relating to foreign exchange and lending arrangements, as well as derivatives to hedge interest rate risk on SC's secured structured financings and the borrowings under its revolving credit facilities. SC uses both interest rate swaps and interest rate caps to satisfy these requirements and to hedge the variability of cash flows on securities issued by Trusts and borrowings under its warehouse facilities. In addition, derivatives are used to manage risks related to residential and commercial mortgage banking and investing activities. Although these derivatives are used to hedge risk and are considered economic hedges, they are not designated as accounting hedges because the contracts they are hedging are carried at fair value on the balance sheet, resulting in generally symmetrical accounting treatment for the hedging instrument and the hedged item. Mortgage Banking Derivatives The Company's derivatives portfolio includes mortgage banking interest rate lock commitments, forward sale commitments and interest rate swaps. As part of its overall business strategy, the Company originates fixed-rate and adjustable rate residential mortgages. It sells a portion of this production to the FHLMC, the FNMA, and private investors. The Company uses forward sales as a means of hedging against the economic impact of changes in interest rates on the mortgages that are originated for sale and on interest rate lock commitments. The Company typically retains the servicing rights related to residential mortgage loans that are sold. Most of the Company`s residential MSRs are accounted for at fair value. As deemed appropriate, the Company economically hedges MSRs using interest rate swaps and forward contracts to purchase MBS. Customer-related derivatives The Company offers derivatives to its customers in connection with their risk management needs and requirements. These financial derivative transactions primarily consist of interest rate swaps, caps, floors and foreign exchange contracts. Risk exposure from customer positions is managed through transactions with other dealers, including Santander. NOTE 14. DERIVATIVES (continued) Other derivative activities The Company uses foreign exchange contracts to manage the foreign exchange risk associated with certain foreign currency-denominated assets and liabilities. Foreign exchange contracts, which include spot and forward contracts as well as cross-currency swaps, represent agreements to exchange the currency of one country for the currency of another country at an agreed-upon price on an agreed-upon settlement date and may or may not be physically settled depending on the Company’s needs. Exposure to gains and losses on these contracts will increase or decrease over their respective lives as currency exchange and interest rates fluctuate. Other derivative instruments primarily include forward contracts related to certain investment securities sales, an OIS, a total return swap on Visa, Inc. Class B common shares, and equity options, which manage the Company's market risk associated with certain investments and customer deposit products. Derivatives Not Designated in Hedge Relationships – Notional and Fair Values Other derivative activities at December 31, 2018 and December 31, 2017 included: Notional Asset derivatives Fair value Liability derivatives Fair value (in thousands) December 31, 2018 December 31, 2017 December 31, 2018 December 31, 2017 December 31, 2018 December 31, 2017 Mortgage banking derivatives: Forward commitments to sell loans $ 329,189 $ 311,852 $ 4 $ 3 $ 4,821 $ 459 Interest rate lock commitments 133,680 126,194 2,677 2,105 — — Mortgage servicing 455,000 330,000 1,575 193 8,953 2,092 Total mortgage banking risk management 917,869 768,046 4,256 2,301 13,774 2,551 Customer-related derivatives: Swaps receive fixed 11,335,998 9,328,079 92,542 72,912 120,185 70,348 Swaps pay fixed 11,825,804 9,576,893 163,673 110,109 72,662 51,380 Other 2,162,302 1,834,962 11,151 19,971 14,294 18,308 Total customer-related derivatives 25,324,104 20,739,934 267,366 202,992 207,141 140,036 Other derivative activities: Foreign exchange contracts 3,635,119 2,764,999 47,330 24,932 37,466 25,521 Interest rate swap agreements 2,281,379 1,749,349 11,553 9,596 3,264 1,631 Interest rate cap agreements 7,758,710 10,932,707 128,467 135,942 — 32,109 Options for interest rate cap agreements 7,741,765 10,906,081 — 32,165 128,377 135,824 Other 1,038,558 824,786 4,527 5,874 7,137 5,228 Total $ 48,697,504 $ 48,685,902 $ 463,499 $ 413,802 $ 397,159 $ 342,900 NOTE 14. DERIVATIVES (continued) Gains (Losses) on All Derivatives The following Consolidated Statement of Operations line items were impacted by the Company’s derivative activities for the years ended December 31, 2018 , 2017 and 2016 : (in thousands) Year Ended December 31, Derivative Activity (1) Line Item 2018 2017 2016 Fair value hedges: Cross-currency swaps Net Interest Income $ — $ — $ 174 Interest rate swaps Net Interest Income — 2,397 (4,891 ) Cash flow hedges: Pay fixed-receive variable interest rate swaps Interest expense on borrowings 33,881 (10,152 ) (6,397 ) Pay variable receive-fixed interest rate swap Interest income on loans (24,346 ) 9,104 2,353 Other derivative activities: Forward commitments to sell loans Miscellaneous income, net (4,362 ) (9,033 ) 8,034 Interest rate lock commitments Miscellaneous income, net 572 (211 ) (224 ) Mortgage servicing Miscellaneous income, net (7,560 ) 2,075 1,552 Customer-related derivatives Miscellaneous income, net 34,987 16,703 14,861 Foreign exchange Miscellaneous income, net 2,259 6,520 5,189 Interest rate swaps, caps, and options Miscellaneous income, net 11,901 10,897 4,450 Interest expense — 6,060 51,862 Total return settlement Other administrative expenses — — (4,365 ) Other Miscellaneous income, net (4,030 ) 1,747 3,495 (1) Gains are disclosed as positive numbers while losses are shown as a negative number regardless of the line item being affected. The net amount of change recognized in OCI for cash flow hedge derivatives was a loss of $7.1 million , net of tax, for the year ended December 31, 2018 and gains of $18.1 million and $1.1 million for the years ended December 31, 2017 and 2016 , respectively. The net amount of change reclassified from OCI into earnings for cash flow hedge derivatives was a loss of $3.3 million , net of tax, for the year ended December 31, 2018 , and the net amount of change reclassified from OCI into earnings for cash flow hedge derivatives was a gain of $ 17.8 million and a loss of $8.8 million , net of tax, for the years ended December 31, 2017 and 2016 , respectively. Disclosures about Offsetting Assets and Liabilities The Company enters into legally enforceable master netting agreements, which reduce risk by permitting netting of transactions 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 and in a single currency. The right to offset and certain terms regarding the collateral process, such as valuation, credit events and settlement, are contained in the ISDA Master Agreement. The Company's financial instruments, including resell and repurchase agreements, securities lending arrangements, derivatives and cash collateral, may be eligible for offset on its Consolidated Balance Sheet s. The Company has elected to present derivative balances on a gross basis even if the derivative is subject to a legally enforceable nettable ISDA Master Agreement for all trades executed after April 1, 2013. Collateral that is received or pledged for these transactions is disclosed within the “Gross amounts not offset in the Consolidated Balance Sheets ” section of the tables below. Prior to April 1, 2013, the Company had elected to net all caps, floors, and interest rate swaps when it had an ISDA Master Agreement with the counterparty. The collateral received or pledged in connection with these transactions is disclosed within the “Gross amounts offset in the Consolidated Balance Sheets " section of the tables below. NOTE 14. DERIVATIVES (continued) Information about financial assets and liabilities that are eligible for offset on the Consolidated Balance Sheets as of December 31, 2018 and December 31, 2017 , respectively, is presented in the following tables: Offsetting of Financial Assets Gross Amounts Not Offset in the Consolidated Balance Sheet (in thousands) Gross Amounts of Recognized Assets Gross Amounts Offset in the Condensed Consolidated Balance Sheet Net Amounts of Assets Presented in the Condensed Consolidated Balance Sheet Financial Instruments Cash Collateral Received Net Amount December 31, 2018 Cash flow hedges $ 54,986 $ — $ 54,986 $ — $ 22,451 $ 32,535 Other derivative activities (1) 460,822 6,570 454,252 1,066 116,516 336,670 Total derivatives subject to a master netting arrangement or similar arrangement 515,808 6,570 509,238 1,066 138,967 369,205 Total derivatives not subject to a master netting arrangement or similar arrangement (2) 2,677 — 2,677 — — 2,677 Total Derivative Assets $ 518,485 $ 6,570 $ 511,915 $ 1,066 $ 138,967 $ 371,882 December 31, 2017 Cash flow hedges $ 49,442 $ — $ 49,442 $ — $ 3,076 $ 46,366 Other derivative activities (1) 411,697 6,731 404,966 2,021 77,975 324,970 Total derivatives subject to a master netting arrangement or similar arrangement 461,139 6,731 454,408 2,021 81,051 371,336 Total derivatives not subject to a master netting arrangement or similar arrangement (2) 2,105 — 2,105 — — 2,105 Total Derivative Assets $ 463,244 $ 6,731 $ 456,513 $ 2,021 $ 81,051 $ 373,441 (1) Includes customer-related and other derivatives. (2) Includes mortgage banking derivatives. NOTE 14. DERIVATIVES (continued) Offsetting of Financial Liabilities Gross Amounts Not Offset in the Consolidated Balance Sheet (in thousands) Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Condensed Consolidated Balance Sheet Net Amounts of Liabilities Presented in the Condensed Consolidated Balance Sheet Financial Instruments Cash Collateral Pledged Net Amount December 31, 2018 Cash flow hedges $ 100,272 $ — $ 100,272 $ — $ 5,612 $ 94,660 Other derivative activities (1) 392,338 13,422 378,916 — 316,285 62,631 Total derivatives subject to a master netting arrangement or similar arrangement 492,610 13,422 479,188 — 321,897 157,291 Total derivatives not subject to a master netting arrangement or similar arrangement (2) 4,821 — 4,821 — 3,827 994 Total Derivative Liabilities $ 497,431 $ 13,422 $ 484,009 $ — $ 325,724 $ 158,285 December 31, 2017 Cash flow hedges $ 84,911 $ — $ 84,911 $ — $ 622 $ 84,289 Other derivative activities (1) 342,752 16,236 326,516 — 165,716 160,800 Total derivatives subject to a master netting arrangement or similar arrangement 427,663 16,236 411,427 — 166,338 245,089 Total derivatives not subject to a master netting arrangement or similar arrangement (2) 148 — 148 — — 148 Total Derivative Liabilities $ 427,811 $ 16,236 $ 411,575 $ — $ 166,338 $ 245,237 (1) Includes customer-related and other derivatives. (2) Includes mortgage banking derivatives.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The Company is subject to the income tax laws of the U.S., its states and municipalities and certain foreign countries. These tax laws are complex and are potentially subject to different interpretations by the taxpayer and the relevant governmental taxing authorities. In establishing a provision for income tax expense, the Company must make judgments and interpretations about the application of these inherently complex tax laws. Actual income taxes paid may vary from estimates depending upon changes in income tax laws, actual results of operations, and the final audit of tax returns by taxing authorities. Tax assessments may arise several years after tax returns have been filed. The Company reviews its tax balances quarterly and, as new information becomes available, the balances are adjusted as appropriate. The Company is subject to ongoing tax examinations and assessments in various jurisdictions. On December 22, 2017, the TCJA was enacted. Effective January 1, 2018, the TCJA, among other things, reduced the federal corporate income tax rate from 35% to 21%. Due to the complexities involved in accounting for the enactment of the TCJA, SEC Staff Accounting Bulletin (“SAB”) 118 specifies, among other things, that reasonable estimates of the income tax effects of the TCJA should be used, if determinable. Further, SAB 118 clarifies accounting for income taxes under ASC Topic 740, Income Taxes (ASC 740), if information is not yet available or complete and provides for up to a one-year period in which to complete the required analyses and accounting (the measurement period). The Company has obtained and analyzed all currently available information to record the effect of the change in tax law. At December 31, 2017, the Company recorded a one-time tax benefit of $427.3 million , primarily due to the re-valuation of its net deferred tax liability at the lower 21% rate. At December 31, 2018, we have completed our accounting for all of the enactment date income tax effects of the TCJA. NOTE 15. INCOME TAXES (continued) Income Taxes from Continuing Operations The provision for income taxes in the Consolidated Statement of Operations is comprised of the following components: Year Ended December 31, (in thousands) 2018 2017 2016 Current: Foreign $ 13,183 $ 7,288 $ 30,983 Federal (68,160 ) 24,335 71,429 State 64,002 7,951 (2,646 ) Total current 9,025 39,574 99,766 Deferred: Foreign 16,882 (15,065 ) (36,039 ) Federal 360,780 (193,837 ) 143,494 State 39,213 12,288 106,494 Total deferred 416,875 (196,614 ) 213,949 Total income tax provision/(benefit) $ 425,900 $ (157,040 ) $ 313,715 Reconciliation of Statutory and Effective Tax Rate The following is a reconciliation of the U.S. federal statutory rate of 21.0% for the year ended December 31, 2018 and 35% for the years ended December 31, 2017 and 2016 to the Company's effective tax rate for each of the years indicated: Year Ended December 31, 2018 2017 2016 Federal income tax at statutory rate 21.0 % 35.0 % 35.0 % Increase/(decrease) in taxes resulting from: Valuation allowance 4.6 % 0.9 % (5.0 )% Tax-exempt income (0.8 )% (1.9 )% (1.6 )% Section 162(m) limitation 0.2 % — % — % Non-deductible FDIC insurance premiums 0.8 % — % — % BOLI (0.9 )% (2.8 )% (2.1 )% State income taxes, net of federal tax benefit 5.9 % 2.6 % 5.7 % General business tax credits (1.7 )% (2.1 )% (2.1 )% Electric vehicle credits (0.7 )% (3.0 )% (2.7 )% Basis in SC 3.0 % 3.4 % 3.1 % Uncertain tax position reserve (0.3 )% (0.4 )% 3.3 % Tax reform — % (53.3 )% — % Other (1.0 )% 2.0 % (0.7 )% Effective tax rate 30.1 % (19.6 )% 32.9 % NOTE 15. INCOME TAXES (continued) Deferred Tax Assets and Liabilities The tax effects of temporary differences that give rise to the deferred tax assets and deferred tax liabilities are presented below: At December 31, (in thousands) 2018 2017 Deferred tax assets: ALLL $ 208,507 $ 214,873 Internal Revenue Code ("IRC") Section 475 mark to market adjustment 296,145 520,256 Unrealized loss on available-for-sale securities 76,915 57,325 Unrealized loss on derivatives 11,340 13,217 Held to maturity 5,901 — Capital loss carryforwards 22,661 28,873 Net operating loss carryforwards 1,836,767 921,498 Non-solicitation payments 87 237 Employee benefits 98,735 112,206 General business credit & other tax credit carryforwards 670,502 627,969 Broker commissions paid on originated mortgage loans 11,073 11,179 Minimum tax credit carryforwards 87,822 164,661 Recourse reserves 5,346 5,143 Deferred interest expense 66,146 55,552 Depreciation and amortization 111,438 — Other 153,370 120,450 Total gross deferred tax assets 3,662,755 2,853,439 Valuation allowance (300,584 ) (235,920 ) Total deferred tax assets 3,362,171 2,617,519 Deferred tax liabilities: Purchase accounting adjustments 81,151 82,217 Deferred income 38,448 20,562 Originated MSR 42,625 38,775 Change in Control deferred gain 375,573 345,014 Leasing transactions 3,270,042 2,076,602 Depreciation and amortization — 122,417 Other 141,782 125,570 Total gross deferred tax liabilities 3,949,621 2,811,157 Net deferred tax (liability) $ (587,450 ) $ (193,638 ) The IRC Section 475 mark-to-market adjustment deferred tax asset is related to SC's business as a dealer, which is required to be recognized under IRC Section 475 for net gains that have been recognized for tax purposes on loans that are required to be marked to market for tax purposes but not book purposes. The leasing transactions deferred tax liability is primarily related to accelerated tax depreciation on leasing transactions. The Change in Control deferred gain is the book over tax basis difference in the Company's investment in SC. The deferred tax liability would be realized upon the Company's disposition of its interest in SC or through dividends received from SC. Periodic reviews of the carrying amount of deferred tax assets are made to determine if the establishment of a valuation allowance is necessary. If, based on the available evidence in future periods, it is more likely than not that all or a portion of the Company’s deferred tax assets will not be realized, a deferred tax valuation allowance would be established. Consideration is given to all positive and negative evidence related to the realization of the deferred tax assets. NOTE 15. INCOME TAXES (continued) Items considered in this evaluation include historical financial performance, expectation of future earnings, the ability to carry back losses to recoup taxes previously paid, the length of statutory carryforward periods, experience with operating loss and tax credit carryforwards not expiring unused, tax planning strategies and timing of reversals of temporary differences. The Company's evaluation is based on current tax laws, as well as its expectations of future performance. As of December 31, 2018 , the Company maintained a valuation allowance of $300.6 million , compared to $235.9 million as of December 31, 2017, related to deferred tax assets subject to carryforward periods for which the Company has determined it is more likely than not that these deferred tax assets will remain unused after the carryforward periods have expired. The $64.7 million increase year-over-year was primarily driven by increased losses of subsidiaries in Puerto Rico for which the related deferred tax assets are not expected to be realized in future periods. The deferred tax asset realization analysis is updated at each year-end using the most recent forecasts. An assessment is made quarterly as to whether the forecasts and assumptions used in the deferred tax asset realization analysis should be revised in light of any changes that have occurred or are expected to occur that would significantly impact the forecasts or modeling assumptions. At December 31, 2018 , the Company has recorded the following: (in thousands) Gross Deferred Tax Balance Valuation Allowance Final Expiration Year (1) Net operating loss carryforwards $ 1,712,321 $ 131,332 2037 State net operating loss carryforwards 124,446 5,841 2038 General business credit carryforward 670,502 78,427 2038 Minimum tax credit carryforward 87,822 4,723 N/A Capital loss carryforward 22,661 22,661 2023 Deferred tax timing differences — 57,600 N/A Total $ 2,617,752 $ 300,584 (1) These will expire in varying amounts through the final expiration year. As of December 31, 2018 , the Company’s intention to permanently reinvest unremitted earnings of certain foreign subsidiaries (with the exception of one subsidiary) in accordance with ASC 740-30 (formerly Accounting Principles Board Opinion No. 23) remains unchanged. This will continue to be evaluated as the Company’s business needs and requirements evolve. While the TCJA includes a transition tax which amounts to a deemed repatriation of foreign earnings and a one-time inclusion of these earnings in U.S. taxable income, there could be additional costs of actual repatriation of the foreign earnings, such as state taxes and foreign withholding taxes, which are inherently difficult to quantify. With respect to the subsidiary for which the Company did make a decision to no longer permanently reinvest its unremitted earnings, a $25.1 million liability was recorded for the year ended December 31, 2017 to reflect the applicable transition tax. This liability remained unchanged at December 31, 2018. The TCJA also requires a U.S. shareholder of a controlled foreign corporation ("CFC") to include in income, as a deemed dividend, the global intangible low-taxed income ("GILTI") of the CFC. This provision is effective for taxable years of foreign corporations beginning after December 31, 2017, and to taxable years of United States shareholders in which or with which such taxable years of foreign corporations end. The Company has elected to treat taxes due on future U.S. inclusions in taxable income under the GILTI provision as a current period expense when incurred. An immaterial GILTI liability was incurred for 2018. The Company has not provided deferred income taxes of $28.7 million on approximately $112.1 million of the Bank's existing pre-1988 tax bad debt reserve at December 31, 2018 , due to the indefinite nature of the recapture provisions. Certain rules under section 593 of the IRC govern when the Company may be subject to tax on the recapture of the existing base year tax bad debt reserve, such as distributions by the Bank in excess of certain earnings and profits, the redemption of the Bank’s stock, or a liquidation. The Company does not expect any of those events to occur. NOTE 15. INCOME TAXES (continued) Changes in Liability Related to Uncertain Tax Positions At December 31, 2018 , the Company had reserves related to tax benefits from uncertain tax positions of $81.6 million . A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: (in thousands) Unrecognized Tax Benefits Accrued Interest and Penalties Total Gross unrecognized tax benefits at January 1, 2016 $ 259,863 $ 26,259 $ 286,122 Additions based on tax positions related to 2016 17,323 1,505 18,828 Additions for tax positions of prior years 4,644 37,508 42,152 Reductions for tax positions of prior years (218,994 ) (18,828 ) (237,822 ) Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (4,194 ) (43 ) (4,237 ) Settlements (2,886 ) (3,028 ) (5,914 ) Gross unrecognized tax benefits at December 31, 2016 55,756 43,373 99,129 Additions based on tax positions related to 2017 987 — 987 Additions for tax positions of prior years 2,728 1,877 4,605 Reductions for tax positions of prior years (784 ) (1,926 ) (2,710 ) Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (9,999 ) (1,526 ) (11,525 ) Gross unrecognized tax benefits at December 31, 2017 48,688 41,798 90,486 Additions based on tax positions related to the current year 1,005 — 1,005 Additions for tax positions of prior years 2,030 1,527 3,557 Reductions for tax positions of prior years (1,545 ) (65 ) (1,610 ) Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (4,813 ) (764 ) (5,577 ) Settlements (62 ) (29 ) (91 ) Gross unrecognized tax benefits at December 31, 2018 $ 45,303 $ 42,467 $ 87,770 Gross net unrecognized tax benefits that if recognized would impact the effective tax rate at December 31, 2018 $ 45,303 $ 42,467 Less: Federal, state and local income tax benefits (6,171 ) Net unrecognized tax benefit reserves $ 81,599 Tax positions will initially be recognized in the financial statements when it is more likely than not that the position will be sustained upon examination by the tax authorities. Such tax positions are initially and subsequently measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with the tax authority assuming full knowledge of the position and all relevant facts. The Company is subject to the income tax laws of the U.S., its states and municipalities and certain foreign countries. These tax laws are complex and are potentially subject to different interpretations by the taxpayer and relevant governmental taxing authorities. In establishing an income tax provision, the Company must make judgments and interpretations about the application of these inherently complex tax laws. The Company recognizes penalties and interest accrued related to unrecognized tax benefits within Income tax provision on the Consolidated Statements of Operations. The Company filed a lawsuit against the United States in 2009 in Federal District Court in Massachusetts relating to the proper tax consequences of two financing transactions with an international bank through which the Company borrowed $1.2 billion . As a result of these financing transactions, the Company paid foreign taxes of $264.0 million during the years 2003 through 2007 and claimed a corresponding foreign tax credit for foreign taxes paid during those years, which the Internal Revenue Service ("IRS") disallowed. The IRS also disallowed the Company's deductions for interest expense and transaction costs, totaling $74.6 million in tax liability, and assessed penalties and interest totaling approximately $92.5 million . The Company has paid the taxes, penalties and interest associated with the IRS adjustments for all tax years, and the lawsuit will determine whether the Company is entitled to a refund of the amounts paid. NOTE 15. INCOME TAXES (continued) In November 2015, the Federal District Court granted the Company’s motions for summary judgment and later ordered amounts assessed by the IRS for the years 2003 through 2005 to be refunded to the Company. The IRS appealed that judgment and the U.S. Court of Appeals for the First Circuit partially reversed the judgment of the Federal District Court, finding that the Company is not entitled to claim the foreign tax credits it claimed but will be allowed to exclude from income $132.0 million (representing half of the U.K. taxes the Company paid) and will be allowed to claim the interest expense deductions. The case has been remanded to the Federal District Court for further proceedings to determine, among other issues, whether penalties should be sustained. On remand, the Company moved for summary judgment on two issues. On July 17, 2018, those motions were denied by the Court. In response to the First Circuit's decision, the Company, at December 31, 2016 , used its previously established $230.1 million tax reserve to write off deferred tax assets and a portion of the receivable that would not be realized under the Court's decision. Additionally, the Company established a $36.8 million tax reserve in relation to items that have not yet been determined by the courts, including potential penalties. The Company anticipates the matter will be finally resolved with no effect on net income. With few exceptions, the Company is no longer subject to federal, state and non-U.S. income tax examinations by tax authorities for years prior to 2006. The Company applies an aggregate portfolio approach whereby income tax effects from accumulated OCI are released only when an entire portfolio (i.e. all related units of account) of a particular type is liquidated, sold or extinguished.

FAIR VALUE

FAIR VALUE	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE	FAIR VALUE General A portion of the Company’s assets and liabilities are carried at fair value, including AFS investment securities and derivative instruments. In addition, the Company elects to account for its residential mortgages HFS and a portion of its MSRs at fair value. Fair value is also used on a nonrecurring basis to evaluate certain assets for impairment or for disclosure purposes. Examples of nonrecurring uses of fair value include impairments for certain loans and foreclosed assets. 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 the inputs to valuation techniques used to measure fair value into three levels 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 in Level 1 that are observable for the assets or liabilities, 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 or not readily observable for the asset or liability and are used to measure fair value to the extent relevant observable inputs are not available. Assets and liabilities measured at fair value, by their nature, result in a higher degree of financial statement volatility. When available, the Company uses quoted market prices or matrix pricing in active markets to determine fair value and classifies such items as Level 1 or Level 2 assets or liabilities. If quoted market prices in active markets are not available, fair value is determined using third-party broker quotes and/or DCF models incorporating various assumptions including interest rates, prepayment speeds and credit losses. Assets and liabilities valued using broker quotes and/or DCF models are classified as either Level 2 or Level 3, depending on the lowest level classification of an input that is considered significant to the overall valuation. The Company values assets and liabilities based on the principal market in which each would be sold (in the case of assets) or transferred (in the case of liabilities). The principal market is the forum with the greatest volume and level of activity. In the absence of a principal market, the valuation is based on the most advantageous market. In the absence of observable market transactions, the Company considers liquidity valuation adjustments to reflect the uncertainty in pricing the instruments. The fair value of a financial asset is measured on a stand-alone basis and cannot be measured as a group, with the exception of certain financial instruments held and managed on a net portfolio basis. In measuring the fair value of a nonfinancial asset, the Company assumes the highest and best use of the asset by a market participant, not just the intended use, to maximize the value of the asset. The Company also considers whether any credit valuation adjustments are necessary based on the counterparty's credit quality. NOTE 16. FAIR VALUE (continued) Any models used to determine fair values or validate dealer quotes based on the descriptions below are subject to review and testing as part of the Company's model validation and internal control testing processes. The Bank's Market Risk Department is responsible for determining and approving the fair values of all assets and liabilities valued at fair value, including the Company's Level 3 assets and liabilities. Price validation procedures are performed and the results are reviewed for Level 3 assets and liabilities by the Market Risk Department. Price validation procedures performed for these assets and liabilities can include comparing current prices to historical pricing trends by collateral type and vintage, comparing prices by product type to indicative pricing grids published by market makers, and obtaining corroborating dealer prices for significant securities. The Company reviews the assumptions utilized to determine fair value on a quarterly basis. Any changes in methodologies or significant inputs used in determining fair values are further reviewed to determine if a change in fair value level hierarchy has occurred. Transfers in and out of Levels 1, 2 and 3 are considered to be effective as of the end of the quarter in which they occur. There were no material transfers between Levels 1, 2 or 3 during the years ended December 31, 2018 or 2017 for any assets or liabilities valued at fair value on a recurring basis. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following tables present the assets and liabilities that are measured at fair value on a recurring basis by major product category and fair value hierarchy as of December 31, 2018 and December 31, 2017 . (in thousands) Level 1 Level 2 Level 3 Balance at Level 1 Level 2 Level 3 Balance at Financial assets: U.S. Treasury securities $ 526,364 $ 1,278,381 $ — $ 1,804,745 $ 139,615 $ 858,497 $ — $ 998,112 Corporate debt — 160,114 — 160,114 — 11,660 — 11,660 ABS — 109,638 327,199 436,837 — 156,910 350,252 507,162 State and municipal securities — 16 — 16 — 23 — 23 MBS — 9,231,275 — 9,231,275 — 12,885,412 — 12,885,412 Investment in debt securities AFS (3)(6) 526,364 10,779,424 327,199 11,632,987 139,615 13,912,502 350,252 14,402,369 Other investments - trading securities 4 6 — 10 1 — — 1 RICs HFI (4) — — 126,312 126,312 — — 186,471 186,471 LHFS (1)(5) — 209,506 — 209,506 — 197,691 — 197,691 MSRs (2) — — 149,660 149,660 — — 145,993 145,993 Other assets - derivatives (3) — 515,781 2,704 518,485 — 461,139 2,105 463,244 Total financial assets (7) $ 526,368 $ 11,504,717 $ 605,875 $ 12,636,960 $ 139,616 $ 14,571,332 $ 684,821 $ 15,395,769 Financial liabilities: Other liabilities - derivatives (3) — 496,593 838 497,431 — 427,217 594 427,811 Total financial liabilities $ — $ 496,593 $ 838 $ 497,431 $ — $ 427,217 $ 594 $ 427,811 (1) LHFS disclosed on the Consolidated Balance Sheet s also includes LHFS that are held at the lower of cost or fair value and are not presented within this table. (2) The Company has total MSRs of $152.1 million and $149.2 million as of December 31, 2018 .and December 31, 2017 , respectively. The Company has elected to account for the majority of its MSR balance using the FVO, while the remainder of the MSRs are accounted for using the lower of cost or fair value and are not presented within this table. (3) Refer to Note 3 for the fair value of investment securities and to Note 14 for the fair values of derivative assets and liabilities, on a further disaggregated basis. (4) RICs collateralized by vehicle titles at SC and RV/marine loans at SBNA. (5) Residential mortgage loans. (6) Investment in debt securities AFS disclosed on the Consolidated Balance Sheets at December 31, 2017 included $10.8 million of equity securities valued using the net asset value as a practical expedient that are not presented within this table. (7) Approximately $605.9 million of these financial assets were measured using model-based techniques, or Level 3 inputs, and represented approximately 4.8% of total assets measured at fair value on a recurring basis and approximately 0.4% of total consolidated assets. NOTE 16. FAIR VALUE (continued) Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis The Company may be required to measure certain assets and liabilities at fair value on a nonrecurring basis in accordance with GAAP from time to time. These adjustments to fair value usually result from application of lower-of-cost-or-fair value accounting or certain impairment measures. Assets measured at fair value on a nonrecurring basis that were still held on the balance sheet were as follows: (in thousands) Level 1 Level 2 Level 3 Balance at Level 1 Level 2 Level 3 Balance at Impaired commercial LHFI $ 5,182 $ 150,208 $ 219,258 $ 374,648 $ — $ 226,832 $ 356,343 $ 583,175 Foreclosed assets — 16,678 81,208 97,886 — 20,011 106,581 126,592 Vehicle inventory — 342,617 — 342,617 — 325,203 — 325,203 LHFS (1) — — 1,073,795 1,073,795 — — 2,324,830 2,324,830 Auto loans impaired due to bankruptcy — 189,114 — 189,114 — 121,578 — 121,578 MSRs — — 9,386 9,386 — — 9,273 9,273 (1) These amounts include $1.1 billion and $1.1 billion of personal LHFS that were impaired as of December 31, 2018 and December 31, 2017 , respectively. Valuation Processes and Techniques Impaired commercial LHFI in the table above represents the recorded investment of impaired commercial loans for which the Company measures impairment during the period based on the fair value of the underlying collateral supporting the loan. Written offers to purchase a specific impaired loan are considered observable market inputs, which are considered Level 1 inputs. Appraisals are obtained to support the fair value of the collateral and incorporate measures such as recent sales prices for comparable properties and are considered Level 2 inputs. Loans for which the value of the underlying collateral is determined using a combination of real estate appraisals, field examinations and internal calculations are classified as Level 3. The inputs in the internal calculations may include the loan balance, estimation of the collectability of the underlying receivables held by the customer used as collateral, sale and liquidation value of the inventory held by the customer used as collateral and historical loss-given-default parameters. In cases in which the carrying value exceeds the fair value of the collateral less cost to sell, an impairment charge is recognized. The net carrying value of these loans was $479.4 million and $491.5 million at December 31, 2018 and December 31, 2017 , respectively. Loans previously impaired which were not marked to fair value during the periods presented are excluded from this table. Foreclosed assets represent the recorded investment in assets taken during the period presented in foreclosure of defaulted loans, and are primarily comprised of commercial and residential real properties and generally measured at fair value less costs to sell. The fair value of the real property is generally determined using appraisals or other indications of market value based on recent comparable sales of similar properties or assumptions generally observable in the marketplace. 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 values of used cars. The Company's LHFS portfolios that are measured at fair value on a nonrecurring basis primarily consist of personal, commercial, and RICs LHFS. The estimated fair value of these LHFS is calculated based on a combination of estimated 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 voluntary prepayments, prepayment rates, discount rates reflective of the cost of funding, and credit loss expectations. The lower of cost or fair value adjustment for personal LHFS includes customer default activity and adjustments related to the net change in the portfolio balance during the reporting period. 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. NOTE 16. FAIR VALUE (continued) Fair Value Adjustments The following table presents the increases and decreases in value of certain assets that are measured at fair value on a nonrecurring basis for which a fair value adjustment has been included in the Consolidated Statements of Operations relating to assets held at period-end: Year Ended December 31, (in thousands) Statement of Operations Location 2018 2017 2016 Impaired LHFI Provision for credit losses $ (58,818 ) $ (73,925 ) $ (99,082 ) Foreclosed assets Miscellaneous income, net (1) (12,137 ) (13,505 ) (8,339 ) LHFS Provision for credit losses (387 ) (3,700 ) — LHFS Miscellaneous income, net (1) (382,298 ) (386,422 ) (424,121 ) Auto loans impaired due to bankruptcy Provision for credit losses (93,277 ) (75,194 ) — Goodwill impairment Impairment of goodwill — (10,536 ) — MSRs Miscellaneous income, net (1) (743 ) (549 ) 503 (1) Gains are disclosed as positive numbers while losses are shown as a negative number regardless of the line item being affected. Level 3 Rollforward for Assets and Liabilities Measured at Fair Value on a Recurring Basis The tables below present the changes in Level 3 balances for the years ended December 31, 2018 and 2017 , respectively, for those assets and liabilities measured at fair value on a recurring basis. Year Ended December 31, 2018 Year Ended December 31, 2017 (in thousands) Investments RICs HFI MSRs Derivatives, net Total Investments RICs HFI MSRs Derivatives, net Total Balances, beginning of period $ 350,252 $ 186,471 $ 145,993 $ 1,514 $ 684,230 $ 814,567 $ 217,170 $ 146,589 $ (29,000 ) $ 1,149,326 Losses in OCI (3,323 ) — — — (3,323 ) (9,570 ) — — — (9,570 ) Gains/(losses) in earnings — 17,018 7,906 (1,324 ) 23,600 — 54,363 1,967 (1,002 ) 55,328 Additions/Issuances — 6,631 12,778 — 19,409 — 21,671 15,788 — 37,459 Settlements (1) (19,730 ) (83,808 ) (17,017 ) 1,676 (118,879 ) (454,745 ) (106,733 ) (18,351 ) 31,516 (548,313 ) Balances, end of period $ 327,199 $ 126,312 $ 149,660 $ 1,866 $ 605,037 $ 350,252 $ 186,471 $ 145,993 $ 1,514 $ 684,230 Changes in unrealized gains (losses) included in earnings related to balances still held at end of period $ — $ 17,018 $ 7,906 $ (1,896 ) $ 23,028 $ — $ 54,363 $ 1,967 $ (791 ) $ 55,539 (1) Settlements include charge-offs, prepayments, paydowns and maturities. The gains in earnings reported in the table above related to the RICs HFI for which the Company elected the FVO are driven by three primary factors: 1) the recognition of interest income, 2) recoveries of previously charged-off RICs, and 3) actual performance of the portfolio since the Change in Control. Recoveries from RICs that were charged off at the Change in Control date are a direct increase to the gain recognized within the portfolio. In accordance with ASC 805, Business Combinations , the Company did not ascribe a fair value to the portfolio of sub-prime charged-off RICs at the Change in Control date. Recoveries of previously charged off loans are usually recorded as a reduction to charge-offs in the period in which the recovery is made; however, in instances where the FVO is elected, it will flow through the fair value mark. At the Change in Control date, the UPB of the previously charged-off RIC portfolio was approximately $3.0 billion . Valuation Processes and Techniques - Recurring Fair Value Assets and Liabilities The following is a description of the valuation techniques used for instruments measured at fair value on a recurring basis: Debt Securities Classified as AFS and Trading Securities Debt securities accounted for at fair value include both the AFS and trading securities portfolios. The Company utilizes a third-party pricing service to value its investment securities portfolios on a global basis. Its primary pricing service has consistently proved to be a high quality third-party pricing provider. For those investments not valued by pricing vendors, other trusted market sources are utilized. The Company monitors and validates the reliability of vendor pricing on an ongoing basis, which can include pricing methodology reviews, performing detailed reviews of the assumptions and inputs used by the vendor to price individual securities, and price validation testing. Price validation testing is performed independently of the risk-taking function and can include corroborating the prices received from third-party vendors with prices from another third-party source, reviewing valuations of comparable instruments, comparison to internal valuations, or by reference to recent sales of similar securities. NOTE 16. FAIR VALUE (continued) The classification of securities within the fair value hierarchy is based upon the activity level in the market for the security type and the observability of the inputs used to determine their fair values. Trading securities and certain of the Company's U.S. Treasury securities are valued utilizing observable market quotes. The Company obtains vendor trading platform data (actual prices) from a number of live data sources, including active market makers and interdealer brokers. These certain investment securities are, therefore, classified as Level 1. Actively traded quoted market prices for the majority of the debt securities AFS, such as U.S. Treasury and government agency securities, corporate debt, state and municipal securities, and MBS, are not readily available. The Company's principal markets for its investment securities are the secondary institutional markets with an exit price that is predominantly reflective of bid-level pricing in these markets. These investment securities are priced by third-party pricing vendors. The third-party vendors use a variety of methods when pricing these securities that incorporate relevant observable market data to arrive at an estimate of what a buyer in the marketplace would pay for a security under current market conditions. These investment securities are, therefore, considered Level 2. Certain ABS are valued using DCF models. The DCF models are obtained from a third-party pricing vendor who uses observable market data and therefore are classified as Level 2. Other ABS that could not be valued using a third-party pricing service are valued using an internally-developed DCF model. When estimating the fair value using this model, the Company uses its best estimate of the key assumptions, which include the discount rates and forward yield curves. The Company uses comparable bond indices based on industry, term, and rating to discount the expected future cash flows. Determining the comparability of assets involves significant subjectivity related to asset type differences, cash flows, performance and other inputs. The inability of the Company to corroborate the fair value of the ABS due to the limited available observable data on these ABS resulted in a fair value classification of Level 3. Realized gains and losses on investments in debt securities are recognized in the Consolidated Statements of Operations through Net (losses)/gains on sale of investment securities . RICs HFI For certain RICs HFI, the Company has elected the FVO. The fair values of RICs are estimated using the DCF model. In 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 voluntary prepayments, prepayment rates based on available data from a comparable market securitization of similar assets, discount rates reflective of the cost of funding debt issuances and recent historical equity yields, recovery rates based on the average severity utilizing reported severity rates and loss severity utilizing available market data from a comparable securitized pool. Accordingly, RICs HFI for which the Company has elected the FVO are classified as Level 3. LHFS The Company's LHFS portfolios that are measured at fair value on a recurring basis consist primarily of residential mortgage LHFS. The fair values of LHFS are estimated using published forward agency prices to agency buyers such as FNMA and FHLMC. The majority of the residential mortgage LHFS portfolio is sold to these two agencies. The fair value is determined using current secondary market prices for portfolios with similar characteristics, adjusted for servicing values and market conditions. These loans are regularly traded in active markets, and observable pricing information is available from market participants. The prices are adjusted as necessary to include the embedded servicing value in the loans as well as the specific characteristics of certain loans that are priced based on the pricing of similar loans. These adjustments represent unobservable inputs to the valuation, and are not significant given the relative insensitivity of the value to changes in these inputs to the fair value of the loans. Accordingly, residential mortgage LHFS are classified as Level 2. Gains and losses on residential mortgage LHFS are recognized in the Consolidated Statements of Operations through Miscellaneous income, net. See further discussion below in the section captioned "FVO for Financial Assets and Financial Liabilities." NOTE 16. FAIR VALUE (continued) MSRs The model to value MSRs estimates the present value of the future net cash flows from mortgage servicing activities based on various assumptions. These cash flows include servicing and ancillary revenue, offset by the estimated costs of performing servicing activities. Significant assumptions used in the valuation of residential MSRs include changes in anticipated loan prepayment rates ("CPRs") and the discount rate, reflective of a market participant's required return on an investment for similar assets. Other important valuation assumptions include market-based servicing costs and the anticipated earnings on escrow and similar balances held by the Company in the normal course of mortgage servicing activities. All of these assumptions are considered to be unobservable inputs. Historically, servicing costs and discount rates have been less volatile than CPR and earnings rates, both of which are directly correlated with changes in market interest rates. Increases in prepayment speeds, discount rates and servicing costs result in lower valuations of MSRs. Decreases in the anticipated earnings rate on escrow and similar balances result in lower valuations of MSRs. For each of these items, the Company makes assumptions based on current market information and future expectations. All of the assumptions are based on standards that the Company believes would be utilized by market participants in valuing MSRs and are derived and/or benchmarked against independent public sources. Accordingly, MSRs are classified as Level 3. Gains and losses on MSRs are recognized on the Consolidated Statements of Operations through Miscellaneous income, net. Listed below are the most significant inputs that are utilized by the Company in the evaluation of residential MSRs: • A 10% and 20% increase in the CPR speed would decrease the fair value of the residential servicing asset by $5.1 million and $9.9 million , respectively, at December 31, 2018 . • A 10% and 20% increase in the discount rate would decrease the fair value of the residential servicing asset by $5.4 million and $10.5 million , respectively, at December 31, 2018 . Significant increases/(decreases) in any of those inputs in isolation would result in significantly (lower)/higher fair value measurements, respectively. These sensitivity calculations are hypothetical and should not be considered to be predictive of future performance. Changes in fair value based on adverse changes in assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. Also, the effect of an adverse variation in a particular assumption on the fair value of the MSRs is calculated without changing any other assumption, while in reality changes in one factor may result in changes in another, which may either magnify or counteract the effect of the change. Prepayment estimates generally increase when market interest rates decline and decrease when market interest rates rise. Discount rates typically increase when market interest rates increase and/or credit and liquidity risks increase, and decrease when market interest rates decline and/or credit and liquidity conditions improve. Derivatives The valuation of these instruments is determined using commonly accepted valuation techniques, including DCF analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable and unobservable market-based inputs. The fair value represents the estimated amount the Company would receive or pay to terminate the contract or agreement, taking into account current interest rates, foreign exchange rates, equity prices and, when appropriate, the current creditworthiness of the counterparties. The Company incorporates credit valuation adjustments in the fair value measurement of its derivatives to reflect the counterparty's nonperformance risk in the fair value measurement of its derivatives, except for those derivative contracts with associated credit support annexes which provide credit enhancements, such as collateral postings and guarantees. The Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy. Certain of the Company's derivatives utilize Level 3 inputs, which are primarily related to mortgage banking derivatives-interest rate lock commitments and total return settlement derivative contracts. The DCF model is utilized to determine the fair value of the mortgage banking derivatives-interest rate lock commitments and the total return settlement derivative contracts. The significant unobservable inputs for mortgage banking derivatives used in the fair value measurement of the Company's loan commitments are "pull through" percentage and the MSR value that is inherent in the underlying loan value. The pull through percentage is an estimate of loan commitments that will result in closed loans. 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. Significant increases (decreases) in any of these inputs in isolation would result in significantly higher (lower) fair value measurements. Significant increases (decreases) in the fair value of a mortgage banking derivative asset (liability) results when the probability of funding increases (decreases). Significant increases (decreases) in the fair value of a mortgage loan commitment result when the embedded servicing value increases (decreases). NOTE 16. FAIR VALUE (continued) Gains and losses related to derivatives affect various line items in the Consolidated Statements of Operations . See Note 14 for a discussion of derivatives activity. Level 3 Inputs - Significant Recurring and Nonrecurring Fair Value Assets and Liabilities The following table presents quantitative information about the significant unobservable inputs within significant Level 3 recurring and nonrecurring assets and liabilities at December 31, 2018 and December 31, 2017 , respectively: (dollars in thousands) Fair Value at December 31, 2018 Valuation Technique Unobservable Inputs Range Financial Assets: ABS Financing bonds $ 303,224 DCF Discount Rate (1) 2.68% - 2.73% (2.69%) Sale-leaseback securities 23,975 Consensus Pricing (2) Offered quotes (3) 110.28 % RICs HFI 126,312 DCF CPR (4) 6.66 % Discount Rate (5) 9.50% - 14.50% (12.55%) Recovery Rate (6) 25.00% - 43.00% (41.6%) Personal LHFS (10) 1,068,757 Lower of Market or Income Approach Market Participant View 70.00% - 80.00% Discount Rate 15.00% - 25.00% Default Rate 30.00% - 40.00% Net Principal & Interest Payment Rate 70.00% - 85.00% Loss Severity Rate 90.00% - 95.00% MSRs (9) 149,660 DCF CPR (7) 7.06% - 100.00% (9.22%) Discount Rate (8) 9.71 % (1) Based on the applicable term and discount index. (2) Consensus pricing refers to fair value estimates that are generally developed using information such as dealer quotes or other third-party valuations or comparable asset prices. (3) Based on the nature of the input, a range or weighted average does not exist. For sale-leaseback securities, the Company owns one security. (4) Based on the analysis of available data from a comparable market securitization of similar assets. (5) Based on the cost of funding of debt issuance and recent historical equity yields. (6) Based on the average severity utilizing reported severity rates and loss severity utilizing available market data from a comparable securitized pool. (7) Average CPR projected from collateral stratified by loan type and note rate. (8) Average discount rate from collateral stratified by loan type and note rate. (9) Excludes MSR valued on a non-recurring basis for which we do not consider there to be significant unobservable assumptions. (10) Excludes non-significant level 3 LHFS portfolios. (dollars in thousands) Fair Value at December 31, 2017 Valuation Technique Unobservable Inputs Range Financial Assets: ABS Financing bonds $ 304,727 DCF Discount Rate (1) 2.16% - 2.90% (2.28%) Sale-leaseback securities $ 45,525 Consensus Pricing (2) Offered Quotes (3) 120.19 % RICs HFI $ 186,471 DCF CPR (4) 6.66 % Discount Rate (5) 9.50% - 14.50% (12.37%) Recovery Rate (6) 25.00% - 43.00% (41.51%) Personal LHFS (10) $ 1,062,090 Lower of Market or Income Approach Market Participant View 70.00% - 80.00% Discount Rate 15.00% - 20.00% Default Rate 30.00% - 40.00% Net Principal & Interest Payment Rate 70.00% - 85.00% Loss Severity Rate 90.00% - 95.00% RICs HFS (10) $ 1,101,049 DCF Discount Rate 3.00% - 6.00% Default Rate 3.00% - 4.00% Prepayment Rate 15.00% - 20.00% Loss Severity Rate 50.00% - 60.00% MSRs (9) $ 145,993 DCF CPR (7) 0.06% - 46.95% (9.80%) Discount Rate (8) 9.90 % (1), (2), (3), (4), (5), (6), (7), (8), (9), (10) - See corresponding footnotes to the December 31, 2018 Level 3 Significant Inputs table above. NOTE 16. FAIR VALUE (continued) Fair Value of Financial Instruments The carrying amounts and estimated fair values, as well as the level within the fair value hierarchy, of the Company's financial instruments are as follows: December 31, 2018 December 31, 2017 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 7,790,593 $ 7,790,593 $ 7,790,593 $ — $ — $ 6,519,967 $ 6,519,967 $ 6,519,967 $ — $ — Investment in debt securities AFS (2) 11,632,987 11,632,987 526,364 10,779,424 327,199 14,402,369 14,402,369 139,615 13,912,502 350,252 Investment in debt securities HTM 2,750,680 2,676,049 — 2,676,049 — 1,799,808 1,773,938 — 1,773,938 — Other investments - trading securities 10 10 4 6 — 1 1 1 — — LHFI, net 83,148,738 83,415,697 5,182 150,208 83,260,307 76,795,794 78,579,144 — 136,832 78,442,312 LHFS 1,283,278 1,283,301 — 209,506 1,073,795 2,522,486 2,522,521 — 197,691 2,324,830 Restricted cash 2,931,711 2,931,711 2,931,711 — — 3,818,807 3,818,807 3,818,807 — — MSRs (1) 152,121 159,046 — — 159,046 149,197 155,266 — — 155,266 Derivatives 518,485 518,485 — 515,781 2,704 463,244 463,244 — 461,139 2,105 Financial liabilities: Deposits 61,511,380 61,456,268 54,039,848 7,416,420 — 60,831,103 60,864,110 55,456,511 5,407,599 — Borrowings and other debt obligations 44,953,784 45,083,518 — 31,494,126 13,589,392 39,003,313 39,335,087 — 23,281,166 16,053,921 Derivatives 497,431 497,431 — 496,593 838 427,811 427,811 — 427,217 594 (1) The Company has elected to account for the majority of its MSR balance using the FVO, while the remainder of the MSRs are accounted for using the lower of cost or fair value. (2) Investment in debt securities AFS disclosed on the Consolidated Balance Sheets at December 31, 2017 included $10.8 million of equity securities valued using net asset value as a practical expedient that are not presented within this table. The balance of these equity securities at December 31, 2018 was $11.0 million and was included in the Other investments line item on the Consolidated Balance Sheets . Valuation Processes and Techniques - Financial Instruments The preceding tables present disclosures about the fair value of the Company's financial instruments. Those fair values for certain instruments are presented based upon subjective estimates of relevant market conditions at a specific point in time and information about eac

NON-INTEREST INCOME AND OTHER E

NON-INTEREST INCOME AND OTHER EXPENSES	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
NON-INTEREST INCOME AND OTHER EXPENSES	NON-INTEREST INCOME AND OTHER EXPENSES The following table presents the details of the Company's Non-interest income for the following periods: Year Ended December 31, (in thousands) 2018 2017 (1) 2016 (1) Non-interest income: Consumer and commercial fees $ 568,147 $ 616,438 $ 689,839 Lease income 2,375,596 2,017,775 1,839,307 Miscellaneous income, net Mortgage banking income, net 34,612 56,659 63,790 BOLI 58,939 66,784 57,796 Capital market revenue 165,392 195,906 190,647 Net gain on sale of operating leases 202,793 127,156 66,909 Asset and wealth management fees 165,765 147,749 148,514 Loss on sale of non-mortgage loans (351,751 ) (370,289 ) (399,312 ) Other miscellaneous income, net 31,532 45,519 40,712 Net (losses)/gains on sale of investment securities (6,717 ) (2,444 ) 57,503 Total Non-interest income $ 3,244,308 $ 2,901,253 $ 2,755,705 (1) - Prior period amounts have not been adjusted under the modified retrospective method. For further information on the adoption of this standard, see Note 1. NOTE 17. NON-INTEREST INCOME AND OTHER EXPENSES (continued) Disaggregation of Revenue from Contracts with Customers Beginning January 1, 2018, the Company adopted the new accounting standard, "Revenue from Contracts with Customers", which requires the Company to disclose a disaggregation of revenue from contracts with customers that falls within the scope of this new accounting standard. The scope of the guidance explicitly excludes net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives. Therefore, the Company has evaluated the revenue streams within our Non-interest income line items to determine whether they are in-scope or out-of-scope. The following table presents the Company's Non-interest income disaggregated by revenue source: Year Ended December 31, (in thousands) 2018 2017 (1) 2016 (1) Non-interest income: In-scope of revenue from contracts with customers: Depository services (2) $ 236,381 $ 242,995 $ 232,993 Commission and trailer fees (3) 143,733 136,497 159,275 Interchange income, net (3) 60,258 58,525 53,294 Underwriting service fees (3) 71,536 97,143 99,366 Asset and wealth management fees (3) 138,108 112,533 113,850 Other revenue from contracts with customers (3) 36,692 40,722 33,607 Total In-scope of revenue from contracts with customers 686,708 688,415 692,385 Out-of-scope of revenue from contracts with customers: Consumer and commercial fees (4) 294,371 347,216 341,426 Lease income 2,375,596 2,017,775 1,839,307 Miscellaneous income/(loss) (4) (105,650 ) (149,709 ) (174,916 ) Net (losses)/gains on sale of investment securities (6,717 ) (2,444 ) 57,503 Total Out-of-scope of revenue from contracts with customers 2,557,600 2,212,838 2,063,320 Total Non-interest income $ 3,244,308 $ 2,901,253 $ 2,755,705 (1) - Prior period amounts have not been adjusted under the modified retrospective method. For further information on the adoption of this standard, see Note 1. (2) - Primarily recorded in the Company's Condensed Consolidated Statements of Operations within Consumer and commercial fees . (3) - Primarily recorded in the Company's Condensed Consolidated Statements of Operations within Miscellaneous income, net. (4) - The balance presented excludes certain revenue streams that are considered in-scope and presented above. Arrangements with Multiple Performance Obligations Our contracts with customers may include multiple performance obligations. For such arrangements, we allocate revenue to each performance obligation based on its relative standalone selling price. We generally determine standalone selling prices based on the prices charged to customers or using expected cost plus margin. Practical Expedients In instances where incremental costs, such as commission expenses, are incurred and the period of benefit is equal to or less than one year, the Company has elected to apply the practical expedient where the Company expenses such amounts as incurred. These costs are recorded within Compensation and benefits within the Condensed Consolidated Statements of Operations. In instances where contracts with customers contain a financing component and the Company expects the customer to pay for the goods or services within one year or less, the Company has elected to apply the practical expedient where the Company does not adjust the contracted amount of consideration for the effects of financing components. The Company does not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less or (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed. As a result of the practical expedient and for the Company's material revenue streams, there are no unperformed performance obligations. As a result of the practical expedient and the Company's revenue recognition for contracts with customers, there are no material contract assets or liabilities. NOTE 17. NON-INTEREST INCOME AND OTHER EXPENSES (continued) Other Expenses The following table presents the Company's other expenses for the following periods: Year Ended December 31, (in thousands) 2018 2017 2016 Other expenses: Amortization of intangibles $ 60,650 $ 61,491 $ 70,034 Deposit insurance premiums and other expenses 61,983 70,661 77,976 Loss on debt extinguishment 3,470 30,349 114,232 Impairment of goodwill — 10,536 — Other administrative expenses 461,291 484,992 418,911 Other miscellaneous expenses 21,595 21,128 1,741 Total Other expenses $ 608,989 $ 679,157 $ 682,894

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION SC Stock Compensation Plans SC granted stock options to certain executives, other employees, and independent directors under SC's 2011 Management Equity Plan (the "MEP"), which enabled SC to make stock awards up to a total of approximately 29.4 million common shares (net of shares canceled and forfeited). The MEP expired in January 2015 and SC will not grant any further awards under the MEP. The Company has granted stock options, restricted stock awards and restricted stock units ("RSUs") under the Omnibus Incentive Plan (the "Plan"), was established in 2013 and enables SC to grant awards 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 SC Common Stock, up to a total of 5,192,641 common shares. The Plan was amended and restated as of June 16, 2016. Stock options granted under the MEP and the Plan have an exercise price based on the estimated fair market value of SC 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. In 2013, the SC Board approved certain changes to the MEP and the Management Shareholders Agreement, including acceleration of vesting for certain employees, removal of transfer restrictions for shares underlying a portion of the options outstanding under the Plan, and addition of transfer restrictions for shares underlying another portion of the outstanding options. All of the changes were contingent on, and effective upon, SC's execution of an IPO and, as such, became effective upon pricing of the IPO on January 22, 2014. Compensation expense related to 583,890 shares of restricted stock that the Company has issued to certain executives is recognized over a five -year vesting period, with zero , $5.5 million and $0.7 million recorded for the years ended December 31, 2018 , 2017 and 2016 , respectively. SC recognized $7.7 million , $13.0 million and $8.8 million related to stock options and RSUs within compensation expense for the years ended December 31, 2018, 2017 and 2016, respectively. In addition, SC recognizes forfeitures of awards as they occur. Also in connection with the IPO, SC granted additional stock options under the MEP to certain executives, other employees, and an independent director with an estimated compensation cost of $10.2 million , which is being recognized over the awards' vesting period of five years for the employees and three years for the director. Additional stock option grants were made to employees under the Plan during the year ended December 31, 2016. The estimated compensation cost associated with these additional grants was $0.7 million and will be recognized over the vesting periods of the awards. The grant date fair values of these stock option awards were determined using the Black-Scholes option valuation model. NOTE 18. STOCK-BASED COMPENSATION (continued) A summary of SC's stock options and related activity as of and for the year ended December 31, 2018 , is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in whole dollars) (in 000's) Options outstanding at January 1, 2018 1,695,008 $ 12.39 4.7 $ 12,058 Exercised (863,811 ) 9.50 7,918 Expired (92,885 ) 23.27 Forfeited (92,936 ) 23.06 Options outstanding at December 31, 2018 645,376 $ 13.15 4.0 $ 3,682 Options exercisable at December 31, 2018 557,555 $ 12.07 3.7 $ 3,572 Options expected to vest after December 31, 2018 87,821 $ 20.03 5.6 $ 110 A summary of the status and changes of SC's nonvested stock options as of and for the year ended December 31, 2018 , is presented below: Shares Weighted Average Grant Date Fair Value Non-vested at January 1, 2018 239,838 $ 7.29 Granted — — Vested (59,081 ) 7.33 Forfeited (92,936 ) 7.96 Non-vested at December 31, 2018 87,821 $ 6.55 At December 31, 2018 , total unrecognized compensation expense for nonvested stock options was $0.3 million , which is expected to be recognized over a weighted average period of 1.4 years . No stock options were granted to employees in 2018 or 2017. The following summarizes the assumptions used for estimating the fair value of stock options granted to employees for the year ended December 31, 2016. For the year ended December 31, 2016 Assumption: Risk-free interest rate 1.79% Expected life (in years) 6.5 Expected volatility 33% Dividend yield 3.69% Weighted average grant date fair value $3.14 The Company has the same fair value basis with that of SC for any stock option awards after the IPO date. In connection with compensation restrictions imposed on certain executive officers and other employees by the European Central Bank under the Capital Requirements Directive IV ("CRD IV") prudential rules, which require a portion of such officers' and employees' variable compensation to be paid in the form of equity and deferred, SC periodically grants RSUs. Under the Plan, a portion of these RSUs vested immediately upon grant, and a portion will vest annually over the following three or five years subject to the achievement of certain performance conditions as and where applicable. After the shares subject to the RSUs vest and are settled, they are subject to transfer and sale restrictions for one year . RSUs are valued based upon the fair market value on the date of the grant. A summary of the Company’s RSUs and performance stock units and related activity as of and for the year ended December 31, 2018 is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in whole dollars) (in 000's) Outstanding at January 1, 2018 650,252 $ 12.68 1.0 $ 12,108 Granted 617,279 16.11 Vested (522,810 ) 14.18 8,616 Forfeited/cancelled (45,922 ) 11.64 Unvested at December 31, 2018 698,799 $ 14.53 1.1 $ 12,292

OTHER EMPLOYEE BENEFIT PLANS

OTHER EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
OTHER EMPLOYEE BENEFIT PLANS	OTHER EMPLOYEE BENEFIT PLANS Defined Contribution Plans All employees of the Bank are eligible to participate in the 401(k) Plan, sponsored by the Company, following their completion of one month of service. There is no age requirement to join the 401(k) Plan. Beginning January 2018, the Bank matched 100% of employee contributions up to 4% of their compensation. Prior to 2018, the Bank matched 100% of employee contributions up to 3% of the employee's compensation and then 50% of employee contributions between 3% and 5% of their compensation. The Bank's match is immediately vested and is allocated to the employee’s various 401(k) Plan investment options in the same percentages as the employee’s own contributions. The Bank recognized expense for contributions to the 401(k) Plan of $26.8 million , $20.6 million and $21.1 million during 2018 , 2017 and 2016 , respectively, within the Compensation and benefits line on the Consolidated Statements of Operations. Beginning January 2019, the Bank will match 100% of employee contributions up to 5% of the employee's compensation. SC sponsors a defined contribution plan offered to qualifying employees. Employees participating in the plan may contribute up to 75% of their eligible compensation, subject to federal limitations on absolute amounts contributed. SC will match up to 6% of their eligible compensation, with matching contributions of up to 100% of employee contributions. The total amount contributed by SC under this plan in 2018 , 2017 and 2016 was $14.0 million , $12.4 million and $11.8 million , respectively. Defined Benefit Plans and Other Post Retirement Benefit Plans The Company sponsors several defined benefit plans and other post retirement benefit plans that cover certain employees. All of these plans are frozen and therefore closed to new entrants; all benefits are fully vested, and therefore the plans ceased accruing benefits. The Company complies with minimum funding requirements in all countries. The Company also sponsors several supplemental executive retirement plans and other unfunded post-retirement benefit plans that provide health care to certain retired employees. The Company recognizes the funded status of its defined benefit pension plans and other post-retirement benefit plans, measured as the difference between the fair value of the plan assets and the projected benefit obligation, within Other liabilities on the Consolidated Balance Sheets. The Company has accrued liabilities of $29.0 million and $65.9 million related to its total defined benefit pension plans and other post-retirement benefit plans at December 31, 2018 and December 31, 2017 , respectively. The net unfunded status related to actuarially-valued defined benefit pension plans and other post-retirement plans was $13.5 million and $50.5 million at December 31, 2018 and December 31, 2017 , respectively.

COMMITMENTS, CONTINGENCIES AND

COMMITMENTS, CONTINGENCIES AND GUARANTEES	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS, CONTINGENCIES AND GUARANTEES	COMMITMENTS, CONTINGENCIES AND GUARANTEES Off-Balance Sheet Risk - Financial Instruments In the normal course of business, the Company utilizes a variety of financial instruments with off-balance sheet risk to meet the financing needs of its customers and manage its exposure to fluctuations in interest rates. These financial instruments include commitments to extend credit, letters of credit, loans sold with recourse, forward contracts, and interest rate and cross currency swaps, caps and floors. These financial instruments may involve, to varying degrees, elements of credit, liquidity, and interest rate risk in excess of the amount recognized on the Consolidated Balance Sheet s. The contractual or notional amounts of these financial instruments reflect the extent of involvement the Company has in particular classes of financial instruments. The Company’s exposure to credit loss in the event of non-performance by the other party to the financial instrument for commitments to extend credit, letters of credit and loans sold with recourse is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. For forward contracts and interest rate swaps, caps and floors, the contract or notional amounts do not represent exposure to credit loss. The Company controls the credit risk of its forward contracts and interest rate swaps, caps and floors through credit approvals, limits and monitoring procedures. See Note 14 to these Consolidated Financial Statements for discussion of all derivative contract commitments. NOTE 20. COMMITMENTS, CONTINGENCIES AND GUARANTEES (continued) The following table details the amount of commitments at the dates indicated: Other Commitments December 31, 2018 December 31, 2017 (in thousands) Commitments to extend credit $ 30,269,311 $ 29,475,864 Letters of credit 1,488,714 1,559,297 Unsecured revolving lines of credit 28,145 27,938 Recourse exposure on sold loans 49,733 46,572 Commitments to sell loans 875 19,477 Total commitments $ 31,836,778 $ 31,129,148 Commitments to Extend Credit Commitments to extend credit generally have fixed expiration dates, are variable rate, and contain provisions that permit the Company to terminate or otherwise renegotiate the contracts in the event of a significant deterioration in the customer’s credit quality. These arrangements normally require payment of a fee by the customer, the pricing of which is based on prevailing market conditions, credit quality, probability of funding, and other relevant factors. Since many of these commitments are expected to expire without being drawn upon, the contract amounts are not necessarily indicative of future cash requirements. Included within the reported balances for Commitments to extend credit at December 31, 2018 and December 31, 2017 are $5.7 billion and $6.4 billion , respectively, of commitments that can be canceled by the Company without notice. Letters of Credit The Company’s letters of credit meet the definition of a guarantee. Letters of credit commit the Company to make payments on behalf of its customers if specified future events occur. The guarantees are primarily issued to support public and private borrowing arrangements. The weighted average term of these commitments at December 31, 2018 was 16.4 months. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. In the event of a requested draw by the beneficiary that complies with the terms of the letter of credit, the Company would be required to honor the commitment. The Company has various forms of collateral for these letters of credit, including real estate assets and other customer business assets. The maximum undiscounted exposure related to these commitments at December 31, 2018 was $1.5 billion . The fees related to letters of credit are deferred and amortized over the life of the respective commitments, and were immaterial to the Company’s financial statements at December 31, 2018 . Management believes that the utilization rate of these letters of credit will continue to be substantially less than the amount of the commitments, as has been the Company’s experience to date. As of December 31, 2018 and December 31, 2017 , the liability related to these letters of credit was $4.6 million and $18.2 million , respectively, which is recorded within the reserve for unfunded lending commitments in Other liabilities on the Consolidated Balance Sheets . The credit risk associated with letters of credit is monitored using the same risk rating system utilized within the loan and financing lease portfolio. Also included within the reserve for unfunded lending commitments at December 31, 2018 and December 31, 2017 were lines of credit outstanding of $88.7 million and $90.9 million , respectively. Unsecured Revolving Lines of Credit Such commitments arise primarily from agreements with customers for unused lines of credit on unsecured revolving accounts and credit cards, provided there is no violation of conditions in the underlying agreement. These commitments, substantially all of which the Company can terminate at any time and which do not necessarily represent future cash requirements, are reviewed periodically based on account usage, customer creditworthiness and loan qualifications. Loans Sold with Recourse The Company has loans sold with recourse that meet the definition of a guarantee. For loans sold with recourse under the terms of its multifamily sales program with FNMA, the Company retained a portion of the associated credit risk. NOTE 20. COMMITMENTS, CONTINGENCIES AND GUARANTEES (continued) Commitments to Sell Loans The Company enters into forward contracts relating to its mortgage banking business to hedge the exposures from commitments to make new residential mortgage loans with existing customers and from mortgage loans classified as LHFS. These contracts mature in less than one year . SC Commitments The following table summarizes liabilities recorded for commitments and contingencies as of December 31, 2018 and 2017, all of which are included in accounts payable and accrued expenses in the accompanying consolidated balance sheets: Agreement or Legal Matter Commitment or Contingency December 31, 2018 December 31, 2017 (in thousands) Chrysler Agreement Revenue-sharing and gain-sharing payments $ 7,001 $ 6,580 Agreement with Bank of America Servicer performance fee 6,353 8,072 Agreement with Citizens Bank of Philadelphia (CBP") Loss-sharing payments 3,708 5,625 Other contingencies Consumer arrangements 2,138 6,326 Following is a description of the agreements pursuant to which the liabilities in the preceding table were recorded. Chrysler Agreement Under terms of the Chrysler Agreement, SC must make revenue sharing payments to FCA and also must make gain-sharing payments to FCA when residual gains on leased vehicles exceed a specified threshold. SC had accrued $7.0 million and $6.6 million at December 31, 2018 and December 31, 2017 , respectively, related to these obligations. The Chrysler Agreement requires, among other things, that SC bears 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 Chrysler agreement also requires that SC maintains at least $5.0 billion in funding available for Floorplan Loans 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 SC. The Chrysler Agreement is subject to early termination in certain circumstances, including the failure by either party to comply with certain of its ongoing obligations under the Chrysler agreement. These obligations include SC's meeting specified escalating penetration rates for the first five years of the agreement. SC did not meet these penetration rates. Also, FCA has the option to acquire, for fair market value, an equity participation in the business offering and providing the financial services contemplated by the Chrysler Agreement. If FCA exercises its equity option, the Chrysler Agreement were to terminate or SC otherwise is unable to realize the expected benefits of its relationship with FCA, there could be a materially adverse impact to the Company's and SC's business, financial condition, results of operations, profitability, loan and lease volume, the credit quality of its portfolio, liquidity, funding and growth, and the Company's or SC's ability to implement its business strategy could be materially adversely affected. Agreement with Bank of America Until January 31, 2017, SC had a flow agreement with Bank of America whereby SC was committed to sell up to $300.0 million of eligible loans to the bank each month. SC 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 the time of sale. Servicer performance payments are due six years from the cut-off date of each loan sale. SC had accrued $6.4 million and $8.1 million at December 31, 2018 and December 31, 2017 , respectively, related to this obligation. Agreement with CBP Until May 1, 2017, SC sold loans to CBP under terms of a flow agreement and predecessor sale agreements. SC retains 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 $3.7 million and $5.6 million at December 31, 2018 and December 31, 2017 , respectively, related to this obligation. NOTE 20. COMMITMENTS, CONTINGENCIES AND GUARANTEES (continued) Other Contingencies SC is or may be subject to potential liability under various other contingent exposures. SC had accrued $2.1 million and $6.3 million at December 31, 2018 and December 31, 2017 , respectively, for other miscellaneous contingencies. Bluestem SC is party to agreements with Bluestem whereby SC is committed to purchase certain new advances on personal revolving financings receivables, along with existing balances on accounts with new advances, originated by Bluestem for an initial term ending in April 2020 and renewing through April 2022 at Bluestem's option. As of December 31, 2018 and 2017, the total unused credit available to customers was $3.1 billion and $3.9 billion , respectively. In 2018, SC purchased $1.2 billion of receivables, out of the $3.9 billion unused credit available to customers as of December 31, 2017. In 2017, SC purchased $1.2 billion of receivables out of the $4.0 billion unused credit available to customers as of December 31, 2016. In addition, SC purchased $0.3 billion and $0.3 billion of receivables related to newly-opened customer accounts in 2018 and 2017, respectively. 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 December 31, 2018 and December 31, 2017, SC was obligated to purchase $15.4 million and $11.5 million , respectively, in receivables that had been originated by the Bluestem but not yet purchased by SC. SC also is required to make a profit-sharing payment to Bluestem each month if performance exceeds a specified return threshold. During the year ended December 31, 2015, SC and the third-party retailer executed an amendment that, among other provisions, increases the profit-sharing percentage retained by SC, 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 the repurchase right is exercised, gives the retailer the right to retain up to 20% of new accounts subsequently originated. Others Under terms of an application transfer agreement with Nissan, SC has the first opportunity to review for its own portfolio any credit applications turned down by Nissan’s captive finance company. The agreement does not require SC to originate any loans, but for each loan originated SC will pay Nissan a referral fee. In connection with the sale of RICs through securitizations and other sales, SC has made standard representations and warranties customary to the consumer finance industry. Violations of these representations and warranties may require SC to repurchase loans previously sold to on- or off-balance sheet Trusts or other third parties. As of December 31, 2018, there were no loans that were the subject of a demand to repurchase or replace for breach of representations and warranties for SC's ABS or other sales. In the opinion of management, the potential exposure of other recourse obligations related to SC’s RICs will not have a material adverse effect on SC’s consolidated financial position, results of operations, or cash flows. Santander has provided guarantees on the covenants, agreements, and obligations of SC under the governing documents of its warehouse facilities and privately issued amortizing notes. These guarantees are limited to the obligations of SC as servicer. In November 2015, SC executed a forward flow agreement with a third party under the terms of which SC is committed to sell charged-off loan receivables in bankruptcy status on a quarterly basis until sales total at least $350.0 million . However, any sale of more than $275.0 million is subject to a market price check. The remaining aggregate commitments as of December 31, 2018 and December 31, 2017 , not subject to a market price check were $64.0 million and $98.9 million , respectively. Impact from Hurricanes Our footprint was impacted by three significant hurricanes during 2017, Hurricane Harvey, which struck the State of Texas and the surrounding region, Hurricane Irma, which primarily struck the State of Florida, and Hurricane Maria, which struck the island of Puerto Rico. Each of these hurricanes resulted in widespread flooding, power outages and associated damage to real and personal property in the affected areas. SC, headquartered in Dallas, Texas, BSI, headquartered in Miami, Florida, and Santander BanCorp, BSPR and SSLLC in Puerto Rico were most directly affected by these hurricanes. In Puerto Rico, there was significant damage to the infrastructure and the power grid on the entire island, which resulted in extended delays in BSPR returning to normal operations. NOTE 20. COMMITMENTS, CONTINGENCIES AND GUARANTEES (continued) The Company assessed the potential additional credit losses related to its consumer and commercial lending exposures in the greater Texas, Florida and Puerto Rico regions. As a result, the Company's ALLL had approximately $25 million of reserves specifically related to the hurricanes at December 31, 2018 compared to $110 million at December 31, 2017. Approximately $50 million of the decrease in the qualitative allowance related to the hurricanes has been offset by an increase in model reserves to other portfolios requiring additional allowance, including the municipality, commercial, and residential loan portfolios in Puerto Rico. The remaining hurricane reserve at December 31, 2018 is a specific reserve recorded for a commercial loan located in Puerto Rico. See discussion under the "Puerto Rico FINRA Arbitrations" section of Note 20 below for further discussion. Other Off-Balance Sheet Risk Other off-balance sheet risk stems from financial instruments that do not meet the definition of guarantees under applicable accounting guidance, and from other relationships that include items such as indemnifications provided in the ordinary course of business and intercompany guarantees. Legal and Regulatory Proceedings Periodically, the Company is party to, or otherwise involved in, various lawsuits, investigations, regulatory matters 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, investigation, regulatory matter and/or 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 matters. Accordingly, except as provided below, the Company is unable to reasonably estimate a range of its potential exposure, if any, to these lawsuits, investigations, 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 operations. In accordance with applicable accounting guidance, the Company establishes an accrued liability for litigation, investigation, 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, investigation or regulatory matter 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, and the Company continues to monitor the matter for further developments that could affect the amount of the accrued liability previously established. As of December 31, 2018 and December 31, 2017 , the Company accrued aggregate legal and regulatory liabilities of $215.2 million and $161.8 million , respectively. Further, the Company estimates the aggregate range of reasonably possible losses for legal and regulatory proceedings in excess of reserves of up to $286 million and $255 million as of December 31, 2018 and December 31, 2017 , respectively. Descriptions of the material lawsuits, regulatory matters and other legal proceedings to which the Company is subject are set forth below. On March 21, 2017, SC and SHUSA entered into a written agreement with the FRB of Boston. Under the terms of that agreement, SC 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. SC Matters Periodically, SC is party to, or otherwise involved in, various lawsuits and other legal proceedings that arise in the ordinary course of business. NOTE 20. COMMITMENTS, CONTINGENCIES AND GUARANTEES (continued) Securities Class Action and Shareholder Derivative Lawsuits Deka Lawsuit: SC is a defendant in a purported securities class action lawsuit (the "Deka Lawsuit") in the United States District Court, Northern District of Texas, captioned Deka Investment GmbH et al. v. Santander Consumer USA Holdings Inc. et al., No. 3:15-cv-2129-K. The Deka Lawsuit, which was filed in August 26, 2014, was brought against SC, certain of its current and former directors and executive officers and certain institutions that served as underwriters in the IPO, including SIS, on behalf of a class consisting of those who purchased or otherwise acquired SC securities between January 23, 2014 and June 12, 2014. The complaint alleges, among other things, that the IPO registration statement and prospectus and certain subsequent public disclosures violated federal securities laws by containing misleading statements concerning SC’s ability to pay dividends and the adequacy of SC’s compliance systems and oversight. The complaint seeks unspecified damages. In December 2015, SC and the individual defendants moved to dismiss the lawsuit, which was denied. In December 2016, the plaintiffs moved to certify the proposed classes. In July 2017, the court entered 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). In October 2018, the court vacated the order staying the Deka Lawsuit but ordered that merits discovery be stayed until the court ruled on the issue of class certification. Feldman Lawsuit: In October 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 certain current and former members of SC’s Board of Directors, and names SC 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 SC’s nonprime auto lending practices, resulting in harm to SC. The complaint seeks unspecified damages and equitable relief. In December 2015, the Feldman Lawsuit was stayed pending the resolution of the Deka Lawsuit. Jackie888 Lawsuit: In September 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 SC’s Board of Directors, and names SC as a nominal defendant. The complaint alleges, among other things, that the defendants breached their fiduciary duties in connection with SC’s accounting practices and controls. The complaint seeks unspecified damages and equitable relief. In April 2017, the Jackie888 Lawsuit was stayed pending the resolution of the Deka Lawsuit. Parmelee Lawsuits: SC is a defendant in two purported securities class action lawsuits filed in March and April 2016 in the United States District Court, Northern District of Texas. The lawsuits were consolidated and are now captioned Parmelee v. Santander Consumer USA Holdings Inc. et al., No. 3:16-cv-783. The lawsuits were filed against SC 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 SC securities between February 3, 2015 and March 15, 2016. The complaint alleges that SC violated federal securities laws by making false or misleading statements, as well as failing to disclose material adverse facts, in its periodic reports filed under the Securities Exchange Act of 1934, as amended (the "Exchange Act") and certain other public disclosures, in connection with, among other things, SC’s change in its methodology for estimating its ACL and the correction of such ACL for prior periods. In January 2018, the court granted SC’s motion to dismiss the lawsuit as to defendant Ismail Dawood (SC’s former Chief Financial Officer) and denied the motion as to all other defendants. In July 2018, the lead plaintiffs filed an unopposed motion for preliminary approval of a class action settlement of the lawsuit for a cash payment of $9.5 million . In September 2018, the court entered an order granting the motion for preliminary approval of the settlement of the lawsuit. Consumer Lending Cases SC 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 “ECOA”), the Fair Debt Collection Practices Act, the 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 SC 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 FRB of Boston, the CFPB, the Department of Justice (the “DOJ”), the SEC, the Federal Trade Commission and various state regulatory and enforcement agencies. NOTE 20. COMMITMENTS, CONTINGENCIES AND GUARANTEES (continued) Currently, such matters include, but are not limited to, the following: • SC received a civil subpoena from the DOJ under Financial Institutions Reform, Recovery and Enforcement Act requesting the production of documents and communications that, among other things, relate to the underwriting and securitization of nonprime vehicle loans. SC has responded to these requests within the deadlines specified in the subpoenas and has otherwise cooperated with the DOJ with respect to this matters. • In October 2014, SC received a subpoena from the SEC commencing an investigation into the SC’s securitization practices. In June 2016, the SEC served an additional subpoena on SC requesting documents related to SC’s securitization practices as well as SC’s financial restatements. SC has produced documents responsive to these subpoenas, and the SEC has taken testimony from certain of SC’s employees. In December 2018, the SEC and SC reached a voluntary agreement to settle the SEC's investigation under which the SEC entered a cease-and-desist order against SC in an administrative matter captioned In the Matter of Santander Consumer USA Holdings Inc., File No. 3-18932. SC paid a civil penalty of $1.5 million in January 2019 and agreed to cease and desist from any future violations of the Exchange Act and the rules thereunder. • In October 2014, May 2015, July 2015 and February 2017, SC 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. SC has been informed that these states will serve as an executive committee on behalf of a group of 32 state Attorneys General (and the District of Columbia). The subpoenas and/or CIDs from the executive committee states contain broad requests for information and the production of documents related to SC’s underwriting, securitization, servicing and collection of nonprime vehicle loans. SC has responded to these requests within the deadlines specified in the subpoenas and/or CIDs, and has otherwise cooperated with the Attorneys General with respect to this matter. • In February 2016, the CFPB issued a supervisory letter relating to its investigation of SC’s compliance systems, Board and senior management oversight, consumer complaint handling, marketing of guaranteed auto protection ("GAP") coverage and loan deferral disclosure practices. SC subsequently received a series of CIDs from the CFPB requesting information and testimony regarding SC’s marketing of GAP coverage and loan deferral disclosure practices. In November 2018, SC entered into a voluntary settlement with the CFPB under which the CFPB entered a consent order against SC in an administrative proceeding captioned In the Matter of Santander Consumer USA Holdings Inc., File No. 2018-BCFP-0008. In the consent order the CFPB found, among other things, that SC violated the Consumer Financial Protection Act of 2010 (the "CFPA") in its marketing of GAP coverage and in certain of its loan deferral disclosure practices. Without admitting or denying the findings, SC agreed to pay a civil penalty of $2.5 million to the CFPB and to provide remediation to certain impacted customers. The consent order also requires SC to submit a comprehensive plan to the CFPB demonstrating how it will comply with the CFPA and the terms of the consent order. • In August 2017, SC received a CID from the CFPB. The stated purpose of the CID was to determine whether SC has complied with the Fair Credit Reporting Act and related regulations. SC has responded to these requests within the deadlines specified in the CID and has otherwise cooperated with the CFPB with respect to this matter. Mississippi Attorney General Lawsuit In January 2017, the Attorney General of the State of Mississippi (the "Mississippi AG") filed a lawsuit against SC 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 SC 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. In March 2017, SC filed motions to dismiss the Mississippi AG’s, lawsuit and the parties are proceeding with discovery. Servicemembers’ Civil Relief Act (“SCRA ” ) Consent Order In February 2015, SC entered into a consent order with the DOJ, approved by the United States District Court for the Northern District of Texas, which resolves the DOJ's claims against SC that certain of its repossession and collection activities during the period between January 2008 and February 2013 violated the SCRA. The consent order requires SC to pay a civil fine in the amount of $55,000 , as well as at least $9.4 million to affected servicemembers consisting of $10,000 per servicemember plus compensation for any lost equity (with interest) for each repossession by SC, and $5,000 per servicemember for each instance where SC 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 of the SC’s SCRA compliance for a period of five years and requires SC to undertake certain additional remedial measures. NOTE 20. COMMITMENTS, CONTINGENCIES AND GUARANTEES (continued) IHC Matters Periodically, SSLLC is party to pending and threatened legal actions and proceedings, including Financial Industry Regulatory Authority (“FINRA”) arbitration actions and class action claims. Puerto Rico FINRA Arbitrations As of December 31, 2018 , SSLLC had received 589 FINRA arbitration cases related to Puerto Rico bonds and Puerto Rico closed-end funds ("CEFs"). Most of these cases are based upon concerns regarding the local Puerto Rico securities market. The statements of claims allege, among other things, fraud, negligence, breach of fiduciary duty, breach of contract, unsuitability, over-concentration and failure to supervise. There were 420 arbitration cases that remained pending as of December 31, 2018 . As a result of Hurricane Maria impacting the Puerto Rico market including declines in Puerto Rico bond and CEF prices and attorney advertisements encouraging customers to file claims, it is possible that additional arbitration claims and/or increased claim amounts may be asserted in future periods. Puerto Rico Class Actions SSLLC, Santander BanCorp, BSPR, the Company and Santander are defendants in a putative class action alleging federal securities and common law claims relating to the solicitation and purchase of more than $180 million of Puerto Rico bonds and $101 million of CEFs during the period from December 2012 to October 2013. The case is pending in the United States District Court for the District of Puerto Rico and is captioned Jorge Ponsa-Rabell, et. al. v. SSLLC, Civ. No. 3:17-cv-02243. The amended complaint alleges that defendants acted in concert to defraud purchasers in connection with the underwriting and sale of Puerto Rico municipal bonds, CEFs and open-end funds. Mexican Government Bonds Consolidated Purported Antitrust Class Action : A consolidated purported antitrust class action is pending in the United States District Court, Southern District of New York, captioned In re Mexican Gove

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONS The parties related to the Company are deemed to include, in addition to its subsidiaries, jointly controlled entities, the Company’s key management personnel (the members of its Board of Directors and certain officers at the level of senior executive vice president or above, together with their close family members) and the entities over which the key management personnel may exercise significant influence or control. Stockholder's Equity Contributions from Santander that impact common stock and paid in capital within the Consolidated Statements of Stockholder's Equity are disclosed within the table below: For Year Ended December 31, (in thousands) 2018 2017 Cash contribution $ 85,035 $ 9,000 Net assets acquired — 2,747 Adjustment to book value of assets purchased on January 1 277 — Deferred tax asset on purchased assets 3,156 — Contribution from shareholder $ 88,468 $ 11,747 On January 1, 2018, the Company purchased certain assets and assumed certain liabilities of Produban Servicios Informaticos Generales S.L. (“Produban”) and Ingenieria De Software Bancario S.L. ("Isban"), both affiliates of Santander. The book value and fair value of the net assets acquired were $2.8 million and $15.3 million , respectively. Related to this transaction, in 2017, the Company received a net capital contribution from Santander of $2.8 million , representing cash received of $15.3 million and a return of capital of $12.5 million for the difference between the fair value of the assets purchased and the book value on the balance sheets of the affiliates. The Company re-evaluated the assets received on January 1, 2018 and recorded an additional $0.3 million to additional paid-in capital. During the year ended December 31, 2018, the Company recorded a $3.2 million deferred tax asset on the assets purchased by the Company to establish the intangible under Section 197 of the IRC. The Company contributed these assets at book value of $6.2 million to SBNA, a subsidiary of the Company, on January 1, 2018. Effective November 2, 2018, Produban was merged with and into Isban, which immediately following the merger changed its name to Santander Global Technology S.L. (“Santander Global Technology”). The Company received additional cash contributions of $85.0 million in 2018 from Santander. NOTE 21. RELATED PARTY TRANSACTIONS (continued) Loan Sales During 2017, SBNA sold $372.1 million of commercial loans to Santander. The sale resulted in $2.4 million of net gain for the year ended December 31, 2017, which is included in Miscellaneous income, net in the Consolidated Statements of Operations . Letters of credit In the normal course of business, SBNA provides letters of credit and standby letters of credit to affiliates. During the years ended December 31, 2018 and December 31, 2017 , the average unfunded balance outstanding under these commitments was $82.7 million and $82.9 million , respectively. Debt and Other Securities The Company has various debt agreements with Santander. For a listing of these debt agreements, see Note 11 to the Consolidated Financial Statements . The Company has $8.5 billion of public securities consisting of various senior note obligations and trust preferred security obligations. Santander owned approximately 0.4% of the outstanding principal of these securities as of December 31, 2018 . Derivatives As of December 31, 2018 , the Company has entered into derivative agreements with Santander, which consist primarily of swap agreements to hedge interest rate risk and foreign currency exposure with notional values of $2.7 billion . As of December 31, 2017 , the Company had derivative agreements with Santander and Abbey National Treasury Services plc, a subsidiary of Santander, with notional values of $2.0 billion and $0.1 billion , respectively. Service Agreements The Company and its affiliates entered into or were subject to various service agreements with Santander and its affiliates. Each of the agreements was made in the ordinary course of business and on market terms. Those agreements include the following: • NW Services Co., a Santander affiliate doing business as Aquanima, is under contract with the Company to provide procurement services, with fees paid in 2018 in the amount of $5.4 million , $3.7 million in 2017 and $3.6 million in 2016 . There were no payables in connection with this agreement for the years ended December 31, 2018 or 2017 . The fees related to this agreement are recorded in Technology, outside service, and marketing expense in the Consolidated Statements of Operations. • Geoban, S.A., a Santander affiliate, is under contract with the Company to provide administrative services, consulting and professional services, application support and back-office services, including debit card disputes and claims support, and consumer and mortgage loan set-up and review, with total fees paid in 2018 in the amount of $1.8 million , $3.3 million in 2017 and $15.1 million in 2016 . In addition, as of December 31, 2018 and 2017 , the Company had payables with Geoban, S.A. in the amounts of zero and $0.2 million , respectively. The fees related to this agreement are recorded in Technology, outside service, and marketing expense in the Consolidated Statements of Operations. • Santander Back-Offices Globales Mayoristas S.A., a Santander affiliate, is under contract with the Company to provide administrative services and back-office support for the Bank’s derivative, foreign exchange and hedging transactions and programs. Fees in the amounts of $1.9 million were paid to Santander Back-Offices Globales Mayoristas S.A. with respect to this agreement in 2018 , and $1.1 million and $1.8 million in 2017 and 2016 , respectively. There were no payables in connection with this agreement in 2018 or 2017 . The fees related to this agreement are recorded in Technology, outside service, and marketing expense in the Consolidated Statements of Operations. • Santander Global Technology S.L. (“Santander Global Technology”), is under contract with the Company to provide information technology development, support and administration, with fees for these services paid in 2018 in the amount of $38.7 million , $77.9 million in 2017 and $91.7 million in 2016 . In addition, as of December 31, 2018 and 2017 , the Company had payables for these services in the amounts of $0.8 million and $26.3 million , respectively. The fees related to this agreement are capitalized in Premises and equipment, net on the Consolidated Balance Sheets . NOTE 21. RELATED PARTY TRANSACTIONS (continued) • Santander Global Technology is also under contract with the Company to provide professional services, and administration and support of information technology production systems, telecommunications and internal/external applications, with fees for these services paid in 2018 in the amount of $74.9 million , $110.7 million in 2017 and $123.4 million in 2016 . In addition, as of December 31, 2018 and 2017 , the Company had payables for these services in the amounts of $18.1 million and $10.2 million , respectively. The fees related to this agreement are capitalized in Premises and equipment, net on the Consolidated Balance Sheets . • In addition, Santander Global Technology, is under contract with the Company to provide information technology development, support and administration, with fees paid in the amount of $5.5 million in 2018. As of December 31, 2018, the Company had payables with Santander Global Technology in the amounts of $21.9 million for these services. The fees related to this agreement are capitalized in Premises and equipment, net on the Consolidated Balance Sheets . • During the year ended December 31, 2018 , the Company paid $17.1 million to Santander for the development and implementation of global projects as part of group expense allocation. • During the year ended December 31, 2018 , the Company paid $3.9 million in rental payments to Santander, compared to $11.2 million in 2017 and $6.1 million in 2016 . SC has entered into or was subject to various agreements with Santander, its affiliates or the Company. Each of the agreements was done in the ordinary course of business and on market terms. Those agreements include the following: Revolving Agreements SC had a $1.75 billion committed revolving credit agreement with Santander that can be drawn on an unsecured basis. During the years ended December 31, 2018 , December 31, 2017 and December 31, 2016 , SC incurred interest expense, including unused fees of $11.6 million , $51.7 million and $69.9 million , respectively. As of December 31, 2018 and 2017 , SC had accrued interest payable of zero and $1.4 million , respectively. This facility was terminated during 2018. In August 2015, under a new agreement with Santander, SC agreed to begin incurring a fee of 12.5 basis points per annum on certain warehouse facilities, as they renew, for which Santander provides a guarantee of SC's servicing obligations. SC recognized guarantee fee expense of $5.0 million , $6.0 million and $6.4 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. As of December 31, 2018 and 2017 , SC had $1.9 million and $7.6 million of fees payable to Santander under this arrangement. Lease Origination and Servicing Agreement During 2014 and until May 9, 2015, SC was party to a flow agreement with SBNA under which SBNA has the first right to review and approve Chrysler Capital consumer vehicle lease applications. SC could review any applications declined by SBNA for SC’s own portfolio. SC provides servicing and received an origination fee on all leases originated under this agreement. Pursuant to the Chrysler Agreement, SC pays FCA on behalf of SBNA for residual gains and losses on the flowed leases. All fees and expenses associated with this agreement between SBNA and SC eliminate in consolidation. In April 2015, SBNA and SC determined not to renew this agreement, which expired by its terms on May 9, 2015. Securitizations Other information relating to SPAIN securitization platform for the years ended December 31, 2018 and 2017 is as follows: (in thousands) December 31, 2018 December 31, 2017 Servicing fee income $ 35,058 $ 12,346 Loss (Gain) on sale, excluding lower of cost of market adjustments (if any) 20,736 13,026 Servicing fees receivable 2,983 1,848 Collections due to Santander 15,968 12,961 During the year ended December 31, 2018 , SC re-acquired certain class of notes amounting to approximately $76 million from unrelated third parties that it previously sold to Santander under the SPAIN securitization platform. These notes were redeemed by Santander at par value. NOTE 21. RELATED PARTY TRANSACTIONS (continued) Origination Support Services Beginning in 2018, SC agreed to provide SBNA with origination support services in connection with the processing, underwriting and purchase of retail loans, primarily from Chrysler dealers. In addition, SC has agreed to perform the servicing for any loans originated on SBNA’s behalf. Other related-party transactions • As of December 31, 2018 , Jason A. Kulas and Thomas Dundon, both former members of SC's Board of Directors and Chief Executive Officers ("CEOs") of SC, each had a minority equity investment in a property in which SC leases approximately 373,000 square feet as its corporate headquarters. During the years ended December 31, 2018 , 2017 and 2016 SC recorded $4.8 million , $5.0 million and $5.0 million , respectively, in lease payments on this property. Future minimum lease payments over the nine -year term of the lease, which extends through 2026, total $55.6 million . • SC entered into a Master Securities Purchase Agreement (an "MSPA") with Santander, under which it had the option to sell a contractually determined amount of eligible prime loans to Santander under the SPAIN securitization platform, for a term ending in December 2018. SC provides servicing on all loans originated under this arrangement. For the year ended December 31, 2018 and December 31, 2017 , SC sold $2.9 billion and $2.6 billion of prime loans at fair value under the MSPA. • SC is party to a master service agreement ("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. The MSA enables SC to review point-of-sale credit applications of retail store customers. During the year ended December 31, 2016, SC fully impaired its cost method investment in this entity and recorded a loss of $6.0 million . Effective August 17, 2016, SC ceased funding new originations from all of the retailers for which it reviews credit applications under this MSA. • SC's wholly-owned subsidiary, Santander Consumer International Puerto Rico, LLC (SCI), opened deposit accounts with BSPR, an affiliated entity. As of December 31, 2018 and 2017 , SCI had cash of $8.9 million and $106.6 million , respectively, on deposit with BSPR. This transaction eliminates in the consolidation of SHUSA. • SBNA also has agreements with SC by which SC will service auto RICs and RV and marine portfolios. In addition, during the year ended December 31, 2017, SBNA purchased an RV/marine loan portfolio from SC. All fees and expenses associated with this agreement eliminate in consolidation. Entities that transferred to the IHC have entered into or were subject to various agreements with Santander or its affiliates. Each of the agreements was made in the ordinary course of business and on market terms. Those agreements include the following: • BSI enters into transactions with affiliated entities in the ordinary course of business. As of December 31, 2018 , BSI had short-term borrowings from unconsolidated affiliates of $59.9 million compared to $78.7 million as of December 31, 2017 . BSI had cash and cash equivalents deposited with affiliates of $46.2 million and $152.7 million as of December 31, 2018 and December 31, 2017 , respectively. BSI had foreign exchange rate forward contracts with affiliates as counterparties with notional amounts of approximately $1.5 billion and $1.6 billion as of December 31, 2018 and December 31, 2017 , respectively. BSI held deposits from unconsolidated affiliates of $55.7 million as of December 31, 2018 . • SIS enters into transactions with affiliated entities in the ordinary course of business. SIS executes, clears and custodies certain of its securities transactions through various affiliates in Latin America and Europe. The balance of payables to customers due to Santander at December 31, 2018 was $1.0 billion , compared to $1.1 billion at December 31, 2017 .

REGULATORY MATTERS

REGULATORY MATTERS	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
REGULATORY MATTERS	REGULATORY MATTERS The Company is subject to the regulations of certain federal, state, and foreign agencies, and undergoes periodic examinations by such regulatory authorities. The minimum U.S. regulatory capital ratios for banks under Basel III are 4.5% for the common equity Tier 1 ("CET1") capital ratio, 6.0% for the Tier 1 capital ratio, 8.0% for the total capital ratio, and 4.0% for the leverage ratio. To qualify as “well-capitalized,” regulators require banks to maintain capital ratios of at least 6.5% for the CET1 capital ratio, 8.0% for the Tier 1 capital ratio, 10.0% for the total capital ratio, and 5.0% for the leverage ratio. At December 31, 2018 and 2017 , the Bank met the well-capitalized capital ratio requirements. NOTE 22. REGULATORY MATTERS (continued) As a BHC, SHUSA is required to maintain a CET1 capital ratio of at least 4.5% , Tier 1 capital ratio of at least 6.0% , total capital ratio of at least 8.0% , and Leverage ratio of at least 4.0% . The Company’s capital levels exceeded the ratios required for BHCs. The Company's ability to make capital distributions will depend on the Federal Reserve's accepting the Company's capital plan, the results of the stress tests described in this Form 10-K, and the Company's capital status, as well as other supervisory factors. The DFA mandates an enhanced supervisory framework, which, among other things, means that the Company is subject to both internal and Federal Reserve run stress tests. The Federal Reserve also has discretionary authority to establish additional prudential standards, on its own or at the Financial Stability Oversight Council's recommendation, regarding contingent capital, enhanced public disclosures, short-term debt limits, and otherwise as it deems appropriate. The Company is also required to receive a notice of non-objection to its capital plans from the Federal Reserve and the OCC before taking capital actions, such as paying dividends, implementing common equity repurchase programs, or redeeming or repurchasing capital instruments. For a discussion of Basel III and the standardized approach and related future changes to the minimum U.S. regulatory capital ratios, see the section of the MD&A captioned "Regulatory Matters." The Federal Deposit Insurance Corporation Improvement Act established five capital tiers: well-capitalized, adequately-capitalized, undercapitalized, significantly undercapitalized and critically undercapitalized. A depository institution’s capital tier depends on its capital levels in relation to various capital measures, which include leverage and risk-based capital measures and certain other factors. Depository institutions that are not classified as well-capitalized or adequately-capitalized are subject to various restrictions regarding capital distributions, payment of management fees, acceptance of brokered deposits and other operating activities. Federal banking laws, regulations and policies also limit the Bank’s ability to pay dividends and make other distributions to the Company. The Bank must obtain prior OCC approval to declare a dividend or make any other capital distribution if, after such dividend or distribution: (1) the Bank’s total distributions to SHUSA within that calendar year would exceed 100% of its net income during the year plus retained net income for the prior two years ; (2) the Bank would not meet capital levels imposed by the OCC in connection with any order, or (3) the Bank is not adequately capitalized at the time. The OCC's prior approval would be required if the Bank is notified by the OCC that it is a problem institution or in troubled condition. Any dividend declared and paid or return of capital has the effect of reducing capital ratios. During 2018 , 2017 , and 2016 the Company paid cash dividends of $410.0 million , $10.0 million and zero , respectively. During 2018 , 2017 and 2016 , the Company also paid cash dividends to preferred shareholders of $11.0 million , $14.6 million and $15.1 million , respectively. During the third quarter of 2018, SHUSA redeemed all of its outstanding preferred stock. The following schedule summarizes the actual capital balances of the Bank and SHUSA at December 31, 2018 and 2017 : REGULATORY CAPITAL (Dollars in thousands) Common Equity Tier 1 Capital Ratio Tier 1 Capital Total Capital Leverage SBNA at December 31, 2018 (1) : Regulatory capital $ 10,179,299 $ 10,179,299 $ 10,819,641 $ 10,179,299 Capital ratio 17.14 % 17.14 % 18.22 % 14.08 % SHUSA at December 31, 2018 (1) : Regulatory capital $ 16,758,748 $ 18,193,361 $ 19,807,403 $ 18,193,361 Capital ratio 15.53 % 16.86 % 18.35 % 14.03 % Common Equity Tier 1 Capital Ratio Tier 1 Capital Total Capital Leverage SBNA at December 31, 2017 (1) : Regulatory capital $ 10,014,774 $ 10,014,774 $ 10,668,635 $ 10,014,774 Capital ratio 18.17 % 18.17 % 19.36 % 13.86 % SHUSA at December 31, 2017 (1) : Regulatory capital $ 16,342,296 $ 17,795,929 $ 19,450,655 $ 17,795,929 Capital ratio 16.38 % 17.84 % 19.50 % 14.17 % (1) Represents transitional ratios under Basel III

BUSINESS SEGMENT INFORMATION

BUSINESS SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
BUSINESS SEGMENT INFORMATION	BUSINESS SEGMENT INFORMATION Business Segment Products and Services The Company’s reportable segments are focused principally around the customers the Company serves. During the first quarter of 2018, the Chief Operating Decision Maker ("CODM") made certain changes in its business lines that drove a reorganization of its business leadership to provide enhanced customer service to its clients and to better align management teams and resources with the manner in which the CODM allocates resources and assesses business performance. Accordingly, the following changes were made within the Company's reportable segments: • The Commercial Banking and the CRE reportable segments were combined into the Commercial Banking reportable segment. • SIS, a subsidiary of SHUSA, that was formerly located within the Other category was moved to the GCB reportable segment. • The Company's internal funds transfer pricing ("FTP") methodologies and cost allocations were updated to align with Santander corporate criteria for internal management reporting. These FTP and cost allocation changes impact how certain costs are allocated for all reporting segments, excluding SC. During the second quarter of 2018, Santander renamed its GCB business to CIB to more accurately reflect its business strategy and business proposition to clients, and to align with the name used by a majority of its competitors in the industry. There were no changes to composition of the reportable segment or reporting unit as a result of this change. All prior period results have been recast to conform to the new composition of reportable segments, and for the revised errors disclosed in Note 1 . The Company has identified the following reportable segments: • The Consumer and Business Banking segment includes the products and services provided to Bank consumer and business banking customers, including consumer deposit, business banking, residential mortgage, unsecured lending and investment services. This segment offers a wide range of products and services to consumers and business banking customers, including demand and interest-bearing demand deposit accounts, money market and savings accounts, CDs and retirement savings products. It also offers lending products such as credit cards, mortgages, home equity lines of credit, and business loans such as business lines of credit and commercial cards. In addition, the Bank provides investment services to its retail customers, including annuities, mutual funds, and insurance products. Santander Universities, which provides grants and scholarships to universities and colleges as a way to foster education through research, innovation and entrepreneurship, is the last component of this segment. • The Commercial Banking segment currently provides commercial lines, loans, letters of credit, receivables financing and deposits to medium and commercial customers, as well as financing and deposits for government entities, commercial real estate loans and multifamily loans to customers, commercial loans to dealers and financing for equipment and commercial vehicles. This segment also provides financing and deposits for government entities and niche product financing for specific industries. • The CIB segment serves the needs of global commercial and institutional customers by leveraging the international footprint of Santander to provide financing and banking services to corporations with over $500 million in annual revenues. CIB also includes SIS, a registered broker-dealer located in New York that provides services in investment banking, institutional sales, and trading and offering research reports of Latin American and European equity and fixed-income securities. CIB's offerings and strategy are based on Santander's local and global capabilities in wholesale banking. • SC is a specialized consumer finance company focused on vehicle finance and third-party servicing. SC’s primary business is the indirect origination of RICs, 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 with FCA that became effective May 1, 2013, SC 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 RICs and leases, as well as dealer loans for inventory, construction, real estate, working capital and revolving lines of credit. SC also originates vehicle loans through a web-based direct lending program, purchases vehicle RICs from other lenders, and services automobile, recreational and marine vehicle portfolios for other lenders. During 2015, SC announced its intention to exit the personal lending business. SC has entered into a number of intercompany agreements with the Bank as described above as part of the Other segment. All intercompany revenue and fees between the Bank and SC are eliminated in the consolidated results of the Company. NOTE 23. BUSINESS SEGMENT INFORMATION (continued) The Other category includes certain immaterial subsidiaries such as BSI, BSPR, SSLLC, and SFS, the unallocated interest expense on the Company's borrowings and other debt obligations and certain unallocated corporate income and indirect expenses. This category also includes the Bank’s community development finance activities, including originating CRA-eligible loans and making CRA-eligible investments. The Company’s segment results, excluding SC and the entities that have been transferred to the IHC, are derived from the Company’s business unit profitability reporting system by specifically attributing managed balance sheet assets, deposits and other liabilities and their related interest income or expense to each of the segments. FTP methodologies are utilized to allocate a cost for funds used or a credit for funds provided to business line deposits, loans and selected other assets using a matched funding concept. The methodology includes a liquidity premium adjustment, which considers an appropriate market participant spread for commercial loans and deposits by analyzing the mix of borrowings available to the Company with comparable maturity periods. Other income and expenses are managed directly by each reportable segment, including fees, service charges, salaries and benefits, and other direct expenses, as well as certain allocated corporate expenses, and are accounted for within each segment’s financial results. Accounting policies for the lines of business are the same as those used in preparation of the Consolidated Financial Statements with respect to activities specifically attributable to each business line. However, the preparation of business line results requires management to establish methodologies to allocate funding costs and benefits, expenses and other financial elements to each line of business. Where practical, the results are adjusted to present consistent methodologies for the segments. The application and development of management reporting methodologies is a dynamic process and is subject to periodic enhancements. The implementation of these enhancements to the internal management reporting methodology may materially affect the results disclosed for each segment with no impact on consolidated results. Whenever significant changes to management reporting methodologies take place, prior period information is reclassified wherever practicable. The CODM manages SC on a historical basis by reviewing the results of SC on a pre-Change in Control basis. The Results of Segments table discloses SC's operating information on the same basis that it is reviewed by the CODM. The adjustments column includes adjustments to reconcile SC's GAAP results to SHUSA's consolidated results. Results of Segments The following tables present certain information regarding the Company’s segments. For the Year Ended SHUSA Reportable Segments December 31, 2018 Consumer & Business Banking Commercial Banking CIB Other (2) SC (3) SC Purchase Price Adjustments (4) Eliminations (4) Total (in thousands) Net interest income $ 1,301,671 $ 639,558 $ 136,402 $ 239,664 $ 3,958,280 $ 31,083 $ 38,192 $ 6,344,850 Non-interest income 308,614 87,803 195,210 405,319 2,297,517 9,678 (59,833 ) 3,244,308 Provision for / (release of) credit losses 100,523 (19,405 ) 9,335 24,254 2,205,585 19,606 — 2,339,898 Total expenses 1,487,835 327,291 235,979 887,681 2,857,944 47,173 (11,578 ) 5,832,325 Income/(loss) before income taxes 21,927 419,475 86,298 (266,952 ) 1,192,268 (26,018 ) (10,063 ) 1,416,935 Intersegment revenue/(expense) (1) 2,507 9,420 (12,362 ) 435 — — — — Total assets 21,024,741 25,712,309 8,521,004 36,416,376 43,959,855 — — 135,634,285 (1) Intersegment revenue/(expense) represents charges or credits for funds used or provided by each of the segments and is included in net interest income. (2) Other includes the results of the entities transferred to the IHC, earnings from non-strategic assets, the investment portfolio, interest expense on the Bank’s and the Company's borrowings and other debt obligations, amortization of intangible assets and certain unallocated corporate income and indirect expenses. (3) Management of SHUSA manages SC by analyzing the pre-Change in Control results of SC as disclosed in this column. (4) SC Purchase Price Adjustments represents the impact that SC purchase marks had on the results of SC included within the consolidated operations of SHUSA, while eliminations eliminate intercompany transactions. NOTE 23. BUSINESS SEGMENT INFORMATION (continued) For the Year Ended SHUSA Reportable Segments December 31, 2017 Consumer & Business Banking Commercial Banking CIB Other (2) SC (3) SC Purchase Price Adjustments (4) Eliminations (4) Total (in thousands) Net interest income $ 1,115,169 $ 630,078 $ 153,622 $ 255,096 $ 4,114,600 $ 124,551 $ 30,834 $ 6,423,950 Non-interest income 356,936 70,219 186,749 548,806 1,793,408 (9,177 ) (45,688 ) 2,901,253 Provision for / (release of) credit losses 85,115 29,586 33,275 93,165 2,363,812 154,991 — 2,759,944 Total expenses 1,500,815 324,385 218,696 955,292 2,740,190 44,066 (19,120 ) 5,764,324 Income/(loss) before income taxes (113,825 ) 346,326 88,400 (244,555 ) 804,006 (83,683 ) 4,266 800,935 Intersegment revenue/(expense) (1) 2,330 6,137 (8,086 ) (381 ) — — — — Total assets 18,714,285 25,318,068 6,949,373 37,890,000 39,402,799 — — 128,274,525 (1) Intersegment revenue/(expense) represents charges or credits for funds used or provided by each of the segments and is included in net interest income. (2) Other includes the results of the entities transferred to the IHC, earnings from non-strategic assets, the investment portfolio, interest expense on the Bank’s and the Company's borrowings and other debt obligations, amortization of intangible assets and certain unallocated corporate income and indirect expenses. (3) Management of SHUSA manages SC by analyzing the pre-Change in Control results of SC as disclosed in this column. (4) SC Purchase Price Adjustments represents the impact that SC purchase marks had on the results of SC included within the consolidated operations of SHUSA, while eliminations eliminate intercompany transactions. For the Year Ended SHUSA Reportable Segments December 31, 2016 Consumer & Business Banking Commercial Banking CIB Other (2) SC (3) SC Purchase Price Adjustments (4) Eliminations (4) Total (in thousands) Net interest income $ 981,951 $ 638,001 $ 239,074 $ 51,736 $ 4,448,535 $ 187,296 $ 18,099 $ 6,564,692 Total non-interest income 384,210 87,144 241,992 622,145 1,432,634 42,271 (54,691 ) 2,755,705 Provision for credit losses 56,446 85,910 7,952 52,490 2,468,199 308,728 — 2,979,725 Total expenses 1,511,427 318,400 228,999 1,065,027 2,252,259 56,557 (46,475 ) 5,386,194 Income/(loss) before income taxes (201,712 ) 320,835 244,115 (443,636 ) 1,160,711 (135,718 ) 9,883 954,478 Intersegment revenue/(expense) (1) 42,168 28,464 (1,728 ) (68,904 ) — — — — (1) Intersegment revenue/(expense) represents charges or credits for funds used or provided by each of the segments and is included in net interest income. (2) Other includes the results of the entities transferred to the IHC, earnings from non-strategic assets, the investment portfolio, interest expense on the Bank’s and the Company's borrowings and other debt obligations, amortization of intangible assets and certain unallocated corporate income and indirect expenses. (3) Management of SHUSA manages SC by analyzing the pre-Change in Control results of SC as disclosed in this column. (4) SC Purchase Price Adjustments represents the impact that SC purchase marks had on the results of SC included within the consolidated operations of SHUSA, while eliminations eliminate intercompany transactions. During the fourth quarter of 2018, the CODM drove a reorganization of its business leadership to better align the teams with how the CODM allocates resources and assesses business performance. Changes were made to the internal management reporting in 2019 and, accordingly, beginning in the first quarter of 2019, the current Commercial Banking segment will be reported as two separate reportable segments: Commercial Banking and Commercial Real Estate.

PARENT COMPANY FINANCIAL INFORM

PARENT COMPANY FINANCIAL INFORMATION	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
PARENT COMPANY FINANCIAL INFORMATION	PARENT COMPANY FINANCIAL INFORMATION Condensed financial information of the parent company is as follows: BALANCE SHEETS AT DECEMBER 31, 2018 2017 (in thousands) Assets Cash and cash equivalents $ 3,562,789 $ 4,369,307 AFS investment securities 247,510 248,692 Loans to non-bank subsidiaries 3,500,000 3,000,000 Investment in subsidiaries: Bank subsidiary 11,219,433 11,160,429 Non-bank subsidiaries 10,915,872 10,375,573 Premises and equipment, net 52,447 84,873 Equity method investments 3,801 9,324 Restricted cash 79,555 74,156 Deferred tax assets, net 66 29,096 Other assets 348,268 284,500 Total assets $ 29,929,741 $ 29,635,950 Liabilities and stockholder's equity Borrowings and other debt obligations $ 8,351,685 $ 8,149,565 Borrowings from non-bank subsidiaries 145,165 142,554 Deferred tax liabilities, net 61,332 65,814 Other liabilities 235,144 245,249 Total liabilities 8,793,326 8,603,182 Stockholder's equity 21,136,415 21,032,768 Total liabilities and stockholder's equity $ 29,929,741 $ 29,635,950 STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME/(LOSS) YEAR ENDED DECEMBER 31, 2018 2017 2016 (in thousands) Interest income $ 123,389 $ 67,369 $ 12,350 Income from equity method investments 78 2,737 185 Other income 67,100 52,584 34,213 Net gains on sale of investment securities — 1,845 — Total income 190,567 124,535 46,748 Interest expense 288,006 214,280 155,256 Other expense 301,418 349,882 361,229 Total expense 589,424 564,162 516,485 Loss before income taxes and equity in earnings of subsidiaries (398,857 ) (439,627 ) (469,737 ) Income tax (benefit)/provision (51,114 ) 18,165 (121,840 ) Loss before equity in earnings of subsidiaries (347,743 ) (457,792 ) (347,897 ) Equity in undistributed earnings of: Bank subsidiary 489,452 239,887 230,017 Non-bank subsidiaries 565,695 770,255 480,764 Net income 707,404 552,350 362,884 Other comprehensive income, net of tax: Net unrealized (losses)/gains on cash flow hedge derivative financial instruments (3,796 ) 337 9,856 Net unrealized losses recognized on investment securities (80,891 ) (9,744 ) (34,812 ) Amortization of defined benefit plans 560 4,184 2,278 Total other comprehensive loss (84,127 ) (5,223 ) (22,678 ) Comprehensive income $ 623,277 $ 547,127 $ 340,206 NOTE 24. PARENT COMPANY FINANCIAL INFORMATION (continued) STATEMENT OF CASH FLOWS FOR THE YEAR ENDED DECEMBER 31 2018 2017 2016 (in thousands) CASH FLOWS FROM OPERATING ACTIVITIES: Net income $ 707,404 $ 552,350 $ 362,884 Adjustments to reconcile net income to net cash provided by operating activities: Deferred tax expense/(benefit) 24,277 75,053 (94,551 ) Undistributed earnings of: Bank subsidiary (489,452 ) (239,887 ) (230,017 ) Non-bank subsidiaries (565,695 ) (770,255 ) (480,764 ) Net gain on sale of investment securities — (1,845 ) — Stock based compensation expense — (164 ) 395 Equity earnings from equity method investments (78 ) (2,737 ) (185 ) Dividends from investment in subsidiaries 592,797 150,330 — Depreciation, amortization and accretion 44,388 45,475 24,201 Loss on debt extinguishment 3,955 5,582 — Net change in other assets and other liabilities (60,256 ) 51,267 11,484 Net cash provided by/(used in) operating activities 257,340 (134,831 ) (406,553 ) CASH FLOWS FROM INVESTING ACTIVITIES: Proceeds from sales of AFS investment securities — 741,250 — Proceeds from prepayments and maturities of AFS investment securities — — 2,000,000 Purchases of AFS investment securities — — (2,990,800 ) Net capital (contributed to)/returned from subsidiaries (208,622 ) (37,380 ) 45,616 Originations of loans to subsidiaries (4,295,000 ) (5,105,000 ) — Repayments of loans by subsidiaries 3,795,000 2,405,000 — Purchases of premises and equipment (15,333 ) (22,493 ) (33,762 ) Net cash used in investing activities (723,955 ) (2,018,623 ) (978,946 ) CASH FLOWS FROM FINANCIAL ACTIVITIES: Repayment of parent company debt obligations (1,224,474 ) (931,252 ) (1,976,037 ) Net proceeds received from Parent Company senior notes and senior credit facility 1,423,274 4,656,279 3,094,249 Net change in borrowings from non-bank subsidiaries 2,611 1,400 1,010 Dividends to preferred stockholders (10,950 ) (14,600 ) (15,128 ) Dividends paid on common stock (410,000 ) (10,000 ) — Capital contribution from shareholder 85,035 9,000 — Impact of SC stock option activity — — 69 Redemption of preferred stock (200,000 ) — (75,000 ) Net cash (used in)/provided by financing activities (334,504 ) 3,710,827 1,029,163 Net (decrease)/increase in cash, cash equivalents, and restricted cash (1) (801,119 ) 1,557,373 (356,336 ) Cash, cash equivalents, and restricted cash at beginning of period (1) 4,443,463 2,886,090 3,242,426 Cash, cash equivalents, and restricted cash at end of period (1) $ 3,642,344 $ 4,443,463 $ 2,886,090 NON-CASH TRANSACTIONS Capital expenditures in accounts payable $ 8,174 $ 10,729 $ 25,027 Capital distribution to shareholder — — 30,789 Contribution of SFS from shareholder (2) — 322,078 — Contribution of incremental SC shares from shareholder — 566,378 — Contribution of SAM from shareholder (2) 4,396 — — (1) The beginning, ending and net change balances for the periods ended December 31, 2018 , December 31, 2017 , and December 31, 2016 include restricted cash balances of $74.2 million , $79.6 million , and $5.4 million , respectively; $74.0 million , $74.2 million , and $133 thousand , respectively; and $73.1 million , $74.0 million , and $963 thousand , respectively. (2) The contributions of SFS and SAM were accounted for as non-cash transactions. Refer to Note 1 - Basis of Presentation and Accounting Policies for additional information.

BASIS OF PRESENTATION AND ACC_2

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These Condensed Consolidated Financial Statements include accounts of the Company and its consolidated subsidiaries, and certain special purpose financing trusts that are considered VIEs. The Company generally consolidates VIEs for which it is deemed to be the primary beneficiary and voting interest entities ("VOEs") in which the Company has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation. These Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and pursuant to SEC regulations. Additionally, where applicable, the Company's accounting policies conform to the accounting and reporting guidelines prescribed by bank regulatory authorities. In the opinion of management, the accompanying Consolidated Financial Statements reflect all adjustments of a normal and recurring nature necessary for a fair statement of the Consolidated Balance Sheets , Statements of Operations , Statements of Comprehensive Income , Statements of Stockholder's Equity and Statements of Cash Flows ("SCF") for the periods indicated, and contain adequate disclosure to make the information presented not misleading.
Recently Adopted Accounting Standards and Recent Accounting Developments	Recently Adopted Accounting Standards Since January 1, 2018, the Company adopted the following Financial Accounting Standards Board ("FASB") Accounting Standards Updates (“ASUs"): • ASU 2014-09, Revenue from Contracts with Customers (Topic 606), as amended . 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. It includes a five-step process to assist an entity in achieving the main principles of revenue recognition under ASC 606. Because the ASU does not apply to revenue associated with leases and financial instruments (including loans, securities, and derivatives), it did not have a material impact on the elements of the Company's Consolidated Statements of Operations most closely associated with leases and financial instruments (such as interest income, interest expense and securities gains and losses). The Company adopted this ASU as of January 1, 2018 using the modified retrospective method of transition, resulting in an immaterial cumulative-effect adjustment recorded to opening retained earnings for the current period. The adoption of this ASU did not result in material changes in the timing of the Company's revenue recognition, but requires gross presentation of certain costs previously offset against revenue. This change in presentation is reflected in the current period and will increase both noninterest revenue and noninterest expense for the Company. The increase is predominantly associated with certain distribution costs on wealth management products (historically offset against Miscellaneous income), with the remainder of the increase associated with certain underwriting service costs (historically offset against Miscellaneous income). Refer to Note 17 for additional details. Results for reporting periods beginning after January 1, 2018 are presented under the new revenue recognition standard, while prior period amounts have not been adjusted and continue to be reported in accordance with our historic accounting. The cumulative-effect of the changes made to our January 1, 2018 Consolidated Balance Sheet for the adoption of the new revenue recognition standard were as follows: (in thousands) Balance at December 31, 2017 Adjustments Balance at January 1, 2018 Assets - LHFI $ 80,790,681 $ 5,514 $ 80,796,195 Other assets 3,646,405 (3,592 ) 3,642,813 Total assets 128,274,525 1,922 128,276,447 Liabilities - other liabilities 799,403 (1,378 ) 798,025 Total liabilities 104,583,693 (1,378 ) 104,582,315 Stockholders' equity - retained earnings 3,453,957 3,300 3,457,257 Total stockholders' equity 23,690,832 3,300 23,694,132 The following discloses the impact on the Company's Consolidated Balance Sheet at December 31, 2018 and the Consolidated Statement of Operations for the year ended December 31, 2018 of the adoption of this new accounting standard: December 31, 2018 (in thousands) As Reported Balance Without Adoption Assets - LHFI $ 87,045,868 $ 87,041,454 Other assets 3,653,336 3,656,543 Total assets 135,634,285 135,633,078 Liabilities - other liabilities 912,775 914,153 Total liabilities 111,787,053 111,788,431 Stockholders' equity - retained earnings 3,783,405 3,780,820 Total stockholders' equity 23,847,232 23,844,647 NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Year Ended December 31, 2018 (in thousands) As Reported Balance Without Adoption Non-interest income Consumer and commercial fees $ 568,147 $ 565,137 Miscellaneous income/(loss) 307,282 293,973 Total non-interest income 3,244,308 3,227,989 General, administrative and other expenses Technology, outside service, and marketing expense 590,249 582,614 Loan expense 384,899 395,331 Other administrative expenses 608,989 588,773 Total general, administrative, and other expenses 5,832,325 5,814,906 Income before income tax provision 1,416,935 1,418,035 Income tax provision 425,900 426,285 Net income including NCI $ 991,035 $ 991,750 • ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, as amended. This new guidance amends the presentation and accounting for certain financial instruments, including liabilities measured at fair value under the FVO and equity investments. The guidance also updates fair value presentation and disclosure requirements for financial instruments measured at amortized cost. The Company adopted this standard on January 1, 2018, and it did not have a material impact on the Company's financial position or results of operations. As a result of the adoption of this standard, the Company reclassified approximately $10.0 million of equity securities from Investments AFS to Other investments on January 1, 2018. Future changes in the fair value of the Company's equity securities will be recognized in the Condensed Consolidated Statements of Operations rather than Other comprehensive Income. • ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. This new guidance amends the hedge accounting model to enable entities to better portray their risk management activities in their 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 companies for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The Company adopted this standard in the first quarter of 2018. It did not have a material impact on the opening balance of retained earnings for the cumulative-effect adjustment related to eliminating the separate measurement of ineffectiveness. Refer to Note 12 for further discussion of the Company's derivatives. • ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in this ASU allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cut and Jobs Act of 2017 (the “TCJA"). As a result of adoption of this ASU in the first quarter of 2018, the Company reclassified $39.1 million from accumulated other comprehensive income with an offsetting credit to retained earnings. Cumulative net impact to opening retained earnings As a result of the adoption of the new accounting standards outlined above, the Company recorded a cumulative net increase to opening retained earnings of $42.0 million . Those impacts were attributed to the following ASUs adopted during the period: Impact to Retained earnings (in thousands) Adoption of ASU 2014-09, Revenue Recognition $ 3,300 Adoption of ASU 2016-1, Financial Instruments (418 ) Adoption of ASU 2018-02, Statement of Comprehensive Income 39,094 Cumulative-effect adjustment upon adoption of new accounting standards 41,976 Other adjustments at subsidiary 5,573 Net impact to opening retained earnings $ 47,549 NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) The adoption of the following ASUs did not have an impact on the Company's financial position or results of operations: • ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments • ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory • ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (A consensus of the FASB Emerging Issues Task Force) • ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business • ASU 2017-05, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets • ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost • ASU 2017-09 , Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting • ASU 2018-05, Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118 • ASU 2018-06, Codification Improvements to Topic 942, Financial Services—Depository and Lending Significant Accounting Policies The preparation of financial statements in conformity with 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. Management has identified (i) the allowance for loan losses and the reserve for unfunded lending commitments, (ii) estimates of expected residual values of leases vehicles subject to operating leases, (iii) accretion of discounts and subvention on RICs, (iv) goodwill, (v) fair value of financial instruments, and (vi) income taxes as the Company's significant accounting policies and estimates, in that they are important to the portrayal of the Company's financial condition, results of operations and cash flows and the accounting estimates related thereto require management's most difficult, subjective and complex judgments as a result of the need to make estimates about the effect of matters that are inherently uncertain. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The primary effect of this ASU is the requirement of lessees to recognize a right of-use-asset and lease liability for all operating leases with a term greater than 12 months. The right-of-use-asset and lease liability are then derecognized in a manner that effectively yields a straight-line lease expense over the lease term. Lessee accounting requirements for finance leases (previously described as capital leases) and lessor accounting requirements for operating, sales-type, and direct financing leases (sales-type and direct financing leases were both previously referred to as capital leases) are largely unchanged. This ASU is effective on January 1, 2019, with early adoption permitted. We adopted the standard as of January 1, 2019, resulting in the recognition of right of use assets of approximately $664.1 million and liabilities of approximately $705.6 million for our operating leases where the Company is the lessee. In addition, and as a result of the standard, the Company recorded a cumulative net increase to opening Retained earnings of $18.7 million . We do not believe the standard will materially affect our Consolidated Statements of Operations or SCF. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments . This guidance significantly changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost. For AFS debt securities, entities will be required to record allowances rather than reduce the carrying amount, as they do today under the OTTI model. The standard also simplifies the accounting model for purchased credit-impaired debt securities and loans. The guidance will be effective for the Company for the first reporting period beginning after December 15, 2019, including interim periods within that year. The Company does not intend to adopt the this ASU 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 current expected credit loss model will alter the assumptions used in calculating the Company's ACL, 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 ACL and related decrease to capital ratios. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which modifies the disclosure requirements for fair value measurements. This ASU removes the requirement to disclose: the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timin g of transfers between levels; and the valuation processes for Level 3 fair value measurements. This ASU requires disclosure of changes in unrealized gains and losses for the period included in OCI (loss) for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. This new guidance will be effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effect the new guidance will have on its Consolidated Financial Statements and related disclosures. In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. This ASU aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This new guidance will be effective for public companies for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effect the new guidance will have on its Consolidated Financial Statements and related disclosures. NOTE 2. RECENT ACCOUNTING DEVELOPMENTS (continued) In October 2018, the FASB issued ASU 2018-16, Derivatives and Hedging (Topic 815), Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes. This ASU permits use of the Overnight Indexed Swap (“OIS”) rate based on the Secured Overnight Financing Rate as an eligible benchmark interest rate for purposes of applying hedge accounting under Topic 815. This update was adopted January 1, 2019, and the Company does not expect the new guidance to have a material on its Consolidated Financial Statements or related disclosures. In addition to those described in detail above, the Company is in the process of evaluating the following ASUs, but does not expect them to have a material impact on the Company's financial position, results of operations, or disclosures: ASU's Effective in 2019: • ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities • ASU 2017-11, Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception • ASU 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting • ASU 2018-17, Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities
Consolidation	Consolidation In accordance with the applicable accounting guidance for consolidations, the Consolidated Financial Statements include any VOEs in which the Company has a controlling financial interest and any VIEs for which the Company is deemed to be the primary beneficiary. The Company consolidates its VIEs if the Company has (i) a variable interest in the entity; (ii) the power to direct activities of the VIE that most significantly impact the entity's economic performance; and (iii) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE (i.e., the Company is considered to be the primary beneficiary). The Company generally consolidates its VOEs if the Company, directly or indirectly, owns more than 50% of the outstanding voting shares of the entity and the noncontrolling shareholders do not hold any substantive participating or controlling rights. Interests in VIEs and VOEs can include equity interests in corporations, partnerships and similar legal entities, subordinated debt, securitizations, derivatives contracts, leases, service agreements, guarantees, standby letters of credit, loan commitments, and other contracts, agreements and financial instruments. Upon the occurrence of certain significant events, as required by the VIE model, the Company reassesses whether a legal entity in which the Company is involved is a VIE. The reassessment process considers whether the Company has acquired or divested the power to direct the activities of the VIE through changes in governing documents or other circumstances. The reassessment also considers whether the Company has acquired or disposed of a financial interest that could be significant to the VIE, or whether an interest in the VIE has become significant or is no longer significant. The consolidation status of the entities with which the Company is involved may change as a result of such reassessments. Changes in consolidation status are applied prospectively, with assets and liabilities of a newly consolidated VIE initially recorded at fair value. A gain or loss may be recognized upon deconsolidation of a VIE, depending on the carrying amounts of deconsolidated assets and liabilities compared to the fair value of retained interests and ongoing contractual arrangements. The Company uses the equity method to account for unconsolidated investments in VOEs if the Company has significant influence over the entity's operating and financing decisions but does not maintain a controlling financial interest. Unconsolidated investments in VOEs or VIEs in which the Company has a voting or economic interest of less than 20% generally are carried at cost less any impairment. These investments are included in Other assets on the Consolidated Balance Sheets, and the Company's proportionate share of income or loss is included in Miscellaneous income, net within the Consolidated Statements of Operations.
Business Combinations	Business Combinations The Company accounts for business combinations using the acquisition method of accounting, and records the identifiable assets, liabilities and any NCI of the acquired business at their acquisition date fair values. The excess of the purchase price over the estimated fair value of the net assets acquired is recorded as goodwill. Any changes in the estimated acquisition date fair values of the net assets recorded prior to the finalization of a more detailed analysis, but not to exceed one year from the date of acquisition, will change the amount of the purchase price allocable to goodwill. Any subsequent changes to any purchase price allocations that are material to the Company’s Consolidated Financial Statements will be adjusted retrospectively. All acquisition related costs are expensed as incurred. The results of operations of the acquired companies are recorded in the Consolidated Statements of Operations from the date of acquisition. The application of business combination principles including the determination of the fair value of the net assets acquired, requires the use of significant estimates and assumptions. Please see the related discussion under the caption "Goodwill and Intangible Assets" below.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The most significant estimates pertain to fair value measurements, the ALLL and reserve for unfunded lending commitments, accretion of discounts and subvention on RICs, estimates of expected residual values of leased vehicles subject to operating leases, goodwill, and income taxes. Actual results may differ from the estimates, and the differences may be material to the Consolidated Financial Statements.
Revenue Recognition	Revenue Recognition The Company primarily earns interest and non-interest income from various sources, including: • Lending (interest income and loan fees). • Investment securities. • Loan sales and servicing. • Finance leases. • BOLI. • Depository services • Commissions and trailer fees • Interchange income, net. • Asset and wealth management fees. Lending and Investment Securities The principal source of revenue is interest income from loans and investment securities. Interest income is recognized on an accrual basis primarily according to non-discretionary formulas in written contracts, such as loan agreements or securities contracts. Revenue earned on interest-earning assets, including unearned income and the accretion of discounts recognized on acquired or purchased loans, is recognized based on the constant effective yield of such interest-earning assets. Unearned income pertains to the net of fees collected and certain costs incurred from loan originations. Gains or losses on sales of investment securities are recognized on the trade date. Loan Sales and Servicing The Company recognizes revenue from servicing commercial mortgages and consumer loans as earned. Mortgage banking income, net includes fees associated with servicing loans for third parties based on the specific contractual terms and changes in the fair value of MSRs. Gains or losses on sales of residential mortgage, multifamily and home equity loans are included within mortgage banking revenues and are recognized when the sale is complete. Finance Leases Income from finance leases is recognized as part of interest income over the term of the lease using the constant effective yield method, while income arising from operating leases is recognized as part of other non-interest income over the term of the lease on a straight-line basis. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) BOLI Income from BOLI represents increases in the cash surrender value of the policies, as well as insurance proceeds and interest. Depository services Depository services are performed under an agreement with a customer, and those services include personal deposit account opening and maintenance, checking services, online banking services, debit card services, etc. Depository service fees related to customer deposits can generally be distinguished between monthly service fees and transactional fees within the single performance obligation of providing depository account services. Monthly account service and maintenance fees are provided over a period of time (usually a month), and revenue is recognized as the Company performs the service (usually at the end of the month). The services for transactional fees are performed at a point in time and revenue is recognized when the transaction occurs. Commissions and trailer fees Commission fees are earned from the selling of annuity contracts to customers on behalf of insurance companies, acting as the broker for certain equity trading, and sales of interests in mutual funds. The Company elected the expected value method for estimating commission fees due to the large number of customer contracts with similar characteristics. However, commissions and trailer fees are fully constrained as the Company cannot sufficiently estimate the consideration to which it could be entitled to earn. Commissions are generally associated with point-in-time transactions or agreements that are one year or less. The performance obligation is satisfied immediately and revenue is recognized as the Company performs the service. Interchange income, net The Company has entered into agreements with payment networks under which the Company will issue the payment network's credit card as part of the Company's credit card portfolio. Each time a cardholder makes a purchase at a merchant and the transaction is processed, the Company receives an interchange fee in exchange for the authorization and settlement services provided to the payment networks. The performance obligation for the Company is to provide authorization and settlement services to the payment network when the payment network submits a transaction for authorization. The Company considers the payment network to be the customer, and the Company is acting as a principal when performing the transaction authorization and settlement services. The performance obligation for authorization and settlement services is satisfied at a point in time, and revenue is recognized on the date when the Company authorizes and routes the payment to the merchant. The expenses paid to payment networks are accounted for as consideration payable to the customer and therefore reduce the transaction price. Therefore, interchange income is recorded net against the expenses paid to the payment network and the cost of rewards programs. The agreements also contain immaterial fixed consideration related to upfront sign-on bonuses and program development bonuses, which are amortized over the remainder of the agreement's life on a straight-line basis. Underwriting service fees SIS, as a registered broker-dealer, performs underwriting services by raising investment capital from investors on behalf of corporations that are issuing securities. Underwriting services have one performance obligation, which is satisfied on the day SIS purchases the securities. Underwriting services include multiple parties in delivering the performance obligation. The Company has evaluated whether it is the principal or agent when we provide underwriting services. The Company acts as the principal when performing underwriting services, and recognizes fees on a gross basis. Revenue is recorded as the difference between the price the Company pays the issuer of the securities and the public offering price, and expenses are recorded as the proportionate share of the underwriting costs incurred by SIS. The Company is the principal because we obtain control of the services provided by third-party vendors and combine them with other services as part of delivering on the underwriting service. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Asset and wealth management fees Asset and wealth management fees includes fee income generated from discretionary investment management and non-discretionary investment advisory contracts with customers. Discretionary investment management fees are earned for the management of the assets in the customer's account and are recognized as earned and charged to the customer on a quarterly basis. Non-discretionary investment advisory fees are earned for providing investment advisory services to customers, such as recommending the re-balancing or restructuring of the assets in the customer’s account. The investment advisory fee is recognized as earned and charged to the customer on a quarterly basis. The fee for the discretionary and nondiscretionary contracts is based on a percentage of the average assets included in the customer’s account.
Fair Value Measurements	Fair Value Measurements The Company values assets and liabilities based on the principal market in which each would be sold (in the case of assets) or transferred (in the case of liabilities). The principal market is the forum with the greatest volume and level of activity. In the absence of a principal market, valuation is based on the most advantageous market. In the absence of observable market transactions, the Company considers liquidity valuation adjustments to reflect the uncertainty in pricing the instruments. The fair value of a financial asset is measured on a stand-alone basis and cannot be measured as a group, with the exception of certain financial instruments held and managed on a net portfolio basis. In measuring the fair value of a nonfinancial asset, the Company assumes the highest and best use of the asset by a market participant, not just the intended use, to maximize the value of the asset. The Company also considers whether any credit valuation adjustments are necessary based on the counterparty's credit quality. When measuring the fair value of a liability, the Company assumes that the transfer will not affect the nonperformance risk associated with the liability. The Company considers the effect of the credit risk on the fair value for any period in which fair value is measured. There are three valuation approaches for measuring fair value: the market approach, the income approach and the cost approach. Selecting the appropriate technique for valuing a particular asset or liability should consider the exit market for the asset or liability, the nature of the asset or liability being measured, and how a market participant would value the same asset or liability. Ultimately, selecting the appropriate valuation method requires significant judgment. Valuation inputs refer to the assumptions market participants would use in pricing a given asset or liability. Inputs can be observable or unobservable. Observable inputs are assumptions based on market data obtained from an independent source. Unobservable inputs are assumptions based on the Company's own information or assessment of assumptions used by other market participants in pricing the asset or liability. The unobservable inputs are based on the best and most current information available on the measurement date.
Cash, Cash Equivalents, and Restricted Cash	Cash, Cash Equivalents, and Restricted Cash Cash and cash equivalents include cash and amounts due from depository institutions, interest-bearing deposits in other banks, federal funds sold, and securities purchased under agreements to resell. Cash and cash equivalents have original maturities of three months or less and, accordingly, the carrying amount of these instruments is deemed to be a reasonable estimate of fair value. The Company has maintained balances in various operating and money market accounts in excess of federally insured limits. Cash deposited to support securitization transactions, lockbox collections, and the related required reserve accounts is recorded in the Company's Consolidated Balance Sheet as restricted cash. Excess cash flows generated by Trusts are added to the restricted cash reserve account, creating additional over-collateralization until the contractual securitization requirement has been reached. Once the targeted reserve requirement is satisfied, additional excess cash flows generated by the Trusts are released to the Company as distributions from the Trusts. Lockbox collections are added to restricted cash and released when transferred to the appropriate warehouse facility or Trust. The Company also maintains restricted cash primarily related to cash posted as collateral related to derivative agreements and cash restricted for investment purposes.
Investment Securities and Other Investments	Investment Securities and Other Investments Investment in debt securities are classified as either AFS, HTM, trading, or other investments. Investments in equity securities are generally recorded at fair value with changes recorded in earnings. Management determines the appropriate classification at the time of purchase. Debt securities expected to be held for an indefinite period of time are classified as AFS and are carried at fair value, with temporary unrealized gains and losses reported as a component of accumulated other comprehensive income within stockholder's equity, net of estimated income taxes. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Debt securities purchased which the Company has the positive intent and ability to hold until maturity are classified as HTM securities. HTM securities are reported at cost and adjusted for payments, amortization of premium and accretion of discount. Transfers of debt securities into the HTM category from the AFS category are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer is retained in other comprehensive income (“OCI”) and in the carrying value of the HTM securities. Such amounts are amortized over the remaining lives of the securities. In 2018, the Company transferred securities with a $1.2 billion carrying value and $1.2 billion fair value from AFS to HTM. Unrealized holding losses of $29.1 million were retained in OCI at the date of transfer and will be amortized over the remaining lives of the securities. There were no transfers from AFS to HTM during the year ended December 31, 2017. The Company conducts a comprehensive security-level impairment assessment quarterly on all securities with a fair value that is less than their amortized cost basis to determine whether the loss represents OTTI. The quarterly OTTI assessment takes into consideration whether (i) the Company has the intent to sell or, (ii) it is more likely than not that it will be required to sell the security before the expected recovery of its amortized cost. The Company also considers whether or not it would expect to receive all of the contractual cash flows from the investment based on its assessment of the security structure, recent security collateral performance metrics, external credit ratings, failure of the issuer to make scheduled interest or principal payments, judgment and expectations of future performance, and relevant independent industry research, analysis and forecasts. The Company also considers the severity of the impairment in its assessment. In the event of a credit loss, the credit component of the impairment is recognized within non-interest income as a separate line item, and the non-credit component is recorded within accumulated OCI. Realized gains and losses on sales of investment securities are recognized on the trade date and included in earnings within Net(losses)/gains on sale of investment securities, which is a component of non-interest income. Unamortized premiums and discounts are recognized in interest income over the estimated life of the security using the interest method. Debt securities held for trading purposes and equity securities are carried at fair value, with changes in fair value recorded in non-interest income. Investments that are purchased principally for the purpose of economically hedging the MSR in the near term are classified as trading securities and carried at fair value, with changes in fair value recorded as a component of the Miscellaneous income, net line of the Consolidated Statements of Operations. Other investments primarily include the Company's investment in the stock of the FHLB of Pittsburgh and the Federal Reserve Bank ("FRB"). Although FHLB and FRB stock are equity interests in the FHLB and FRB, respectively, neither has a readily determinable fair value, because ownership is restricted and they are not readily marketable. FHLB stock can be sold back only at its par value of $100 per share and only to FHLBs or to another member institution. Accordingly, FHLB stock and FRB stock are carried at cost. The Company evaluates this investment for impairment on the ultimate recoverability of the par value rather than by recognizing temporary declines in value.
LHFI	LHFI LHFI include commercial and consumer loans (including RICs) originated by the Company as well as loans acquired by the Company, which the Company intends to hold for the foreseeable future or until maturity. RICs consist largely of nonprime automobile finance receivables that are acquired individually from dealers at a nonrefundable discount from the contractual principal amount. RICs also include receivables originated through a direct lending program and loan portfolios purchased from other lenders. Originated LHFI Originated LHFI are reported net of cumulative charge offs, unamortized loan origination fees and costs, and unamortized discounts and premiums. Interest on loans is credited to income as it is earned. For most of the Company's originated LHFI, loan origination fees and certain direct loan origination costs and premiums and discounts are deferred and recognized as adjustments to interest income in the Consolidated Statements of Operations over the contractual life of the loan utilizing the effective interest method. For RICs, loan origination fees and costs, premiums and discounts are deferred and amortized over their estimated lives as adjustments to interest income utilizing the effective interest method using estimated prepayment speeds, which are updated on a monthly basis. The Company estimates future principal prepayments specific to pools of homogeneous loans, which are based on the vintage, credit quality at origination and term of the loan. Prepayments in our portfolio are sensitive to credit quality, with higher credit quality loans experiencing higher voluntary prepayment rates than lower credit quality loans. The resulting prepayment rate specific to each pool is based on historical experience and is used as an input in the calculation of the constant effective yield. The impact of defaults is not considered in the prepayment rate; the prepayment rate only considers voluntary prepayments. Our estimated weighted average prepayment rates ranged from 5.7% to 10.8% at December 31, 2018 and 6.1% to 10.4% at December 31, 2017. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) The Company’s LHFI, including RICs and personal unsecured loans originated by SC since the change in control of SC in the first quarter of 2014 (the "Change in Control"), are carried at amortized cost, net of the ALLL. When a RIC is originated, certain cost basis adjustments (the net discounts) to the principal balance of the loan are recognized in accordance with the accounting guidance for loan origination fees and costs in ASC 310-20. These cost basis adjustments generally include the following: • Origination costs. • Dealer discounts - dealer discounts to the principal balance of the loan generally occur in circumstances in which the contractual interest rate on the loan is not sufficient to compensate for the credit risk of the borrower. • Participation - participation fees, or premiums, paid to the dealer as a form of profit-sharing, rewarding the dealer for originating loans that perform. • Subvention - payments received from the vehicle manufacturer as compensation (yield enhancement) for the cost of below-market interest rates offered to consumers. Originated loans are initially recorded at the proceeds paid to fund the loan. Any discount at origination for loans is considered by the Company to reflect yield enhancements and is accreted to income using the effective interest method. See LHFS subsection below for accounting treatment when an HFI loan is re-designated an LHFS. Purchased LHFI Purchased loans are loans acquired in a bulk purchase or business combination. RICs acquired directly from a dealer are considered to be originated loans, not purchased loans. The Company has accounted for its January 2014 consolidation of SC as a business combination. The RIC and personal unsecured loans purchased in the Change in Control were initially recognized at fair value, and no ALLL was recognized at the Change in Control date pursuant to business combination accounting. The purchased portfolio acquired included performing loans as well as those loans acquired with evidence of credit deterioration (defined as those on non-accrual status at the time of the acquisition). All of SC’s performing RICs and personal unsecured loans that were HFI were recorded by the Company at a discount. Subsequent to the Change in Control, the purchase discounts on the retail installment loans are accreted over the remaining expected lives of the loans to their par values using the retrospective effective interest method, which considers the impact of estimated prepayments that is updated on a quarterly basis. The purchase discount on personal unsecured loans (given their revolving nature) are amortized on a straight-line basis in accordance with ASC 310-20. The Company irrevocably elected to account for RICs acquired with evidence of credit deterioration at the Change in Control date at fair value in accordance with ASC 825. Accordingly, the Company does not recognize interest income for these RICs and recognizes the fair value adjustments on these loans as part of other non-interest income in the Company’s Consolidated Statements of Operations. For certain of the RICs which the Company has elected to account for at fair value but are not considered non-accrual, the Company separately recognizes interest income from the total fair value adjustment. No ALLL is recognized for loans that the Company has elected to account for at fair value.
ALLL for Loan Losses and Reserve for Unfunded Lending Commitments	ALLL for Loan Losses and Reserve for Unfunded Lending Commitments The ALLL and reserve for unfunded lending commitments (together, the ACL) are maintained at levels that management considers adequate to provide for losses on the recorded investment of the loan portfolio, based upon an evaluation of known and inherent risks in the loan portfolio. Management's evaluation takes into consideration the risks in the loan portfolio, past loan and lease loss experience, specific loans with loss potential, geographic and industry concentrations, delinquency trends, economic conditions and other relevant factors. While management uses the best information available to make such evaluations, future adjustments to the ACL may be necessary if conditions differ substantially from the assumptions used in making the evaluations. The ALLL consists of two elements: (i) an allocated allowance, which is comprised of allowances established on loans specifically evaluated for impairment, and loans collectively evaluated for impairment, based on historical loan and lease loss experience adjusted for current trends and both general economic conditions and other risk factors in the Company's loan portfolios, and (ii) an unallocated allowance to account for a level of imprecision in management's estimation process. Reserve levels are collectively reviewed for adequacy and approved quarterly by Board-level committees. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) The ALLL includes the estimate of credit losses that management expects will be realized during the loss emergence period, including the amount of net discounts that is included in the loans' recorded investment at the time of charge-off. In the case of loans purchased in a bulk purchase or business combination, the entire discount on the loan portfolio is considered as available to absorb the credit losses when determining the ALLL. For these loans, the Company records provisions for credit losses when incurred losses exceed the unaccreted purchase discount. Management regularly monitors the condition of borrowers and assesses both internal and external factors in determining whether any relationships have deteriorated considering factors such as historical loss experience, trends in delinquency and non-performing loans ("NPLs"), changes in risk composition and underwriting standards, experience and ability of staff and regional and national economic conditions and trends. The Company's allocated reserves are principally based on its various models subject to the Company's model risk management framework. New models are approved by the Company's Model Risk Management Committee, and inputs are reviewed periodically by the Company's internal audit function. Models, inputs and documentation are further reviewed and validated at least annually, and the Company completes a detailed variance analysis of historical model projections against actual observed results on a quarterly basis. Required actions resulting from the Company's analysis, if necessary, are governed by its Allowance for Loan and Lease Losses Committee. The Company's unallocated allowance is no more than 5% of the overall allowance. This is considered to be reasonably sufficient to absorb imprecisions of models to otherwise provide for coverage of inherent losses in the Company's entire loan and lease portfolio. Imprecisions include loss factors inherent in the loan portfolio that may not have been discreetly contemplated in the general and specific components of the allowance, as well as potential variability in estimates. The unallocated allowance is also established in consideration of several factors such as inherent delays in obtaining information regarding a customer's financial condition or changes in its unique business conditions and the interpretation of economic trends. While this analysis is conducted at least quarterly, the Company has the ability to revise the allowance factors whenever necessary in order to address improving or deteriorating credit quality trends or specific risks associated with a loan pool classification. Regardless of the extent of the Company's analysis of customer performance, portfolio evaluations, trends or risk management processes established, a level of imprecision will always exist due to the judgmental nature of loan portfolio and/or individual loan evaluations. The Company maintains an unallocated allowance to recognize the existence of these exposures. For the commercial loan portfolio segment, the Company has specialized credit officers and workout units that identify and manage potential problem loans. Changes in management factors, financial and operating performance, company behavior, industry factors and external events and circumstances are evaluated on an ongoing basis to determine whether potential impairment is evident and additional analysis is needed. For the commercial loan portfolio segment, risk ratings are assigned to each loan to differentiate risk within the portfolio, and are reviewed on an ongoing basis by Credit Risk Management and revised, if needed, to reflect the borrower's current risk profile and the related collateral positions. The risk ratings consider factors such as financial condition, debt capacity and coverage ratios, market presence and quality of management. Generally, credit officers reassess a borrower's risk rating on no less than an annual basis, and more frequently if warranted. This reassessment process is managed on a continual basis by the Credit Risk Review group to ensure consistency and accuracy in risk ratings as well as appropriate frequency of risk rating review by the Company's credit officers. The Company's Credit Risk Review group regularly performs loan reviews and assesses the appropriateness of assigned risk ratings. When a loan's risk rating is downgraded beyond a certain level, the Company's Workout Department becomes responsible for managing the credit risk. Risk rating actions are generally reviewed formally by one or more credit committees, depending on the size of the loan and the type of risk rating action being taken. Detailed analyses are completed that support the risk rating and management's strategies for the customer relationship going forward. The consumer loan portfolio segment and small business loans are monitored for credit risk and deterioration with statistical tools considering factors such as delinquency, loan-to-value ("LTV") ratio, and credit scores. The Bank evaluates the consumer portfolios throughout their life cycles on a portfolio basis. When problem loans are identified that are secured with collateral, management examines the loan files to evaluate the nature and type of collateral supporting the loans. Management documents the collateral type, the date of the most recent valuation, and whether any liens exist, to determine the value to compare against the committed loan amount. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Within the consumer loan portfolio segment, for both residential and home equity loans, loss severity assumptions are incorporated into the loan and lease loss reserve models to estimate loan balances that will ultimately charge off. These assumptions are based on recent loss experience for six LTV bands within the portfolios. LTV ratios are updated based on movements in the state-level Federal Housing Finance Agency house pricing indices. For non-TDR RICs and personal unsecured loans, the Company estimates the ALLL at a level considered adequate to cover probable credit losses in the recorded investment of the portfolio. Probable losses are estimated based on contractual delinquency status and historical loss experience, in addition to the Company’s judgment of estimates of the value of the underlying collateral, bankruptcy trends, economic conditions such as unemployment rates, changes in the used vehicle value index, delinquency status, historical collection rates and other information in order to make the necessary judgments as to probable loan and lease losses. In addition to the ALLL, management estimates probable losses related to unfunded lending commitments. Unfunded lending commitments for commercial customers are analyzed and segregated by risk according to the Company's internal risk rating scale. These risk classifications, in conjunction with an analysis of historical loss experience, current economic conditions, performance trends within specific portfolio segments, and any other pertinent information result in the estimation of the reserve for unfunded lending commitments. Additions to the reserve for unfunded lending commitments are made by charges to the provision for credit losses, and this reserve is classified within Other liabilities on the Company's Consolidated Balance Sheets. Risk factors are continuously reviewed and revised by management when conditions warrant. A comprehensive analysis of the ACL is performed by the Company on a quarterly basis. In addition, a review of allowance levels based on nationally published statistics is conducted on at least an annual basis. The factors supporting the ACL do not diminish the fact that the entire ACL is available to absorb losses in the loan and lease portfolio and related commitment portfolio, respectively. The Company's principal focus, therefore, is on the adequacy of the total ACL. The ACL is subject to review by banking regulators. The Company's primary bank regulators conduct examinations of the ACL and make assessments regarding its adequacy and the methodology employed in its determination. Provisions for credit losses are charged to provision expense in amounts sufficient to maintain the ACL at levels considered adequate to cover probable credit losses incurred in the Company’s HFI loan portfolios. The Company uses the incurred loss approach in providing an ACL on the recorded investment of its existing loans. This approach requires that loan loss provisions are recognized and the corresponding allowance recorded when, based on all available information, it is probable that a credit loss has been incurred. The estimate for credit losses for loans that are individually evaluated for impairment is generally determined through an analysis of the present value of the loan’s expected future cash flows, except for those that are deemed to be collateral dependent. For those loans that are collectively assessed for impairment, the Company utilizes historical loan loss experience information as part of its evaluation. In addition, when establishing the collective ACL for originated loans, the Company’s estimate of losses on recorded investment includes the estimate of the related net discount balance that is expected at the time of charge-off. Although the ACL is established on a collective basis, actual charge-offs are recorded on a loan-by-loan basis when losses are confirmed or when established delinquency thresholds have been met. Additional discussions related to the Company’s charge-off and credit loss provision policies are provided in the “Charge-offs of Uncollectible Loans” section below . When a loan in any portfolio or class has been determined to be impaired (e.g., TDRs and non-accrual commercial loans in excess of $1 million ) as of the balance sheet date, the Company measures impairment based on the present value of expected future cash flows discounted at the loan's original effective interest rate. However, as a practical expedient, the Company may measure impairment based on a loan's observable market price, or the fair value of the collateral less costs to sell if the loan is a collateral-dependent loan. A specific reserve is established as a component of ACL for these impaired loans. Subsequent to the initial measurement of impairment, if there is a significant change to the impaired loan’s expected future cash flows, the Company recalculates the impairment and appropriately adjusts the specific reserve. This is also the case if there was a significant change in the initial estimate for impaired loans that are measured based on a loan's observable market price or the fair value of the collateral less costs to sell if the loan is a collateral-dependent loan. Some impaired loans have risk characteristics similar to other impaired loans and may be aggregated for the measurement of impairment. For those impaired loans that are collectively assessed for impairment, the Company utilizes historical loan loss experience information as part of its evaluation. When the Company determines that the present value of the estimated cash flows of an impaired loan is less than its carrying amount, the Company recognizes impairment through a provision estimate or a charge-off to the allowance. Management performs these assessments on at least a quarterly basis. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued)
Interest Recognition and Non-accrual loans, Charge-off of Uncollectible Loans, TDRs and Impaired loans	Interest Recognition and Non-accrual loans Interest from loans is accrued when earned in accordance with the terms of the loan agreement. The accrual of interest is discontinued and uncollected interest is reversed once a loan is placed in non-accrual status. A loan is determined to be non-accrual when it is probable that scheduled payments of principal and interest will not be received when due according to the contractual terms of the loan agreement. The Company generally places commercial loans and consumer loans on non-accrual status when they become 90 days or more past due. When the collectability of the recorded loan balance of a nonaccrual loan is in doubt, any cash payments received from the borrower are applied first to reduce the carrying value of the loan. Otherwise, interest income may be recognized to the extent cash is received. Generally, a nonaccrual loan is returned to accrual status when, based on the Company’s judgment, the borrower’s ability to make the required principal and interest payments has resumed and collectability of remaining principal and interest is no longer doubtful. Interest income recognition resumes for nonaccrual loans that were accounted for on a cash basis method when they return to accrual status, while interest income that was previously recorded as a reduction in the carrying value of the loan would be recognized as interest income based on the effective yield to maturity on the loan. Please refer to the TDRs section below for discussion related to TDR loans placed on non-accrual status. Credit cards continue to accrue interest until they become 180 days past due, at which point they are charged-off. For RICs, the accrual of interest is discontinued and accrued but uncollected interest is reversed once a RIC becomes more than 60 days past due, and is resumed if a delinquent account subsequently becomes 60 days or less past due. The Company considers an account delinquent when an obligor fails to pay substantially all (defined as 90% ) of the scheduled payment by the due date. The payment following the partial payment must be a full payment, or the account will move into delinquency status at that time. Charge-off of Uncollectible Loans Any loan may be charged-off if a loss confirming event has occurred. Loss confirming events usually involve the receipt of specific adverse information about the borrower and may include bankruptcy (unsecured), foreclosure, or receipt of an asset valuation indicating a shortfall between the value of the collateral and the book value of the loan when that collateral asset is the sole source of repayment. The Company generally charges off commercial loans when it is determined that the specific loan or a portion thereof is uncollectible. This determination is based on facts and circumstances of the individual loans and normally includes considering the viability of the related business, the value of any collateral, the ability and willingness of any guarantors to perform and the overall financial condition of the borrower. Partially charged-off loans continue to be evaluated on not less than a quarterly basis, with additional charge-offs or loan and lease loss provisions taken on the remaining loan balance, if warranted, utilizing the same criteria. The Company generally charges off consumer loans, or a portion thereof, as follows: residential mortgage loans and home equity loans are charged-off to the estimated fair value of their collateral (net of selling costs) when they become 180 days past due, and other loans (closed-end) are charged-off when they become 120 days past due. Auto loans are charged-off to the estimated net recovery value in the month an account becomes greater than 120 days delinquent if the Company has not repossessed the related vehicle. The Company charges off accounts in repossession to estimated net recovery value when the automobile is repossessed and legally available for disposition. Loans receiving a bankruptcy notice or for which fraud is discovered are written down to the collateral value less costs to sell within 60 days of such notice or discovery. Revolving personal unsecured loans are charged off when they become 180 days past due. Credit cards are charged off when they are 180 days delinquent or within 60 days after the receipt of notification of the cardholder’s death or bankruptcy. Charge-offs are not required when it can be clearly demonstrated that repayment will occur regardless of delinquency status. Factors that would demonstrate repayment include a loan that is secured by collateral and is in the process of collection, a loan supported by a valid guarantee or insurance, or a loan supported by a valid claim against a solvent estate. RICs are charged off against the allowance in the month in which the account becomes 120 days contractually delinquent if the Company has not repossessed the related vehicle. The Company charges off accounts in repossession when the automobile is repossessed and legally available for disposition. A net charge off represents the difference between the estimated net sales proceeds and the Company's recorded investment in the related contract. Accounts in repossession that have been charged off and are pending liquidation are removed from RIC status and the related repossessed automobiles are included in Other assets in the Company's Consolidated Balance Sheets. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) TDRs TDRs are loans that have been modified for which the Company has agreed to make certain concessions to customers to both meet the needs of the customers and maximize the ultimate recovery of the loan. TDRs occur when a borrower is experiencing financial difficulties and the loan is modified involving a concession that would otherwise not be granted to the borrower. TDRs are generally placed on non-accrual status until the Company believes repayment under the revised terms is reasonably assured and a sustained period of repayment performance has been achieved (typically defined as six months for a monthly amortizing loan). All costs incurred by the Company in connection with a TDR are expensed as incurred. The TDR classification remains on the loan until it is paid in full or liquidated. Commercial Loan TDRs All of the Company’s commercial loan modifications are based on the circumstances of the individual customer, including specific customers' complete relationship with the Company. Loan terms are modified to meet each borrower’s specific circumstances at a point in time and may allow for modifications such as term extensions and interest rate reductions. Modifications for commercial loan TDRs generally, although not always, result in bifurcation of the original loan into A and B notes. The A note is restructured to allow for an upgraded risk rating and return to accrual status after a sustained period of payment performance has been achieved (typically six months for monthly payment schedules). The B note, if any, is structured as a deficiency note and the balance is charged off but the debt is usually not forgiven. As TDRs, they will be subject to analysis for specific reserves by either calculating the present value of expected future cash flows or, if collateral-dependent, calculating the fair value of the collateral less its estimated cost to sell. The TDR classification will remain on the loan until it is paid in full or liquidated. Consumer Loan TDRs The majority of the Company's TDR balance is comprised of RICs and auto loans. The terms of the modifications for the RIC and auto loan portfolio generally include one or a combination of: a reduction of the stated interest rate of the loan at a rate of interest lower than the current market rate for new debt with similar risk or an extension of the maturity date. In accordance with our policies and guidelines, the Company at times offers extensions (deferrals) to consumers on our RICs under which the consumer is allowed to defer a maximum of three payments per event to the end of the loan. More than 90% of deferrals granted are for two payments. Our policies and guidelines limit the frequency of each new deferral that may be granted to one deferral every six months , regardless of the length of any prior deferral. The maximum number of months extended for the life of the loan for all automobile RICs is eight , while some marine and recreational vehicle ("RV") contracts have a maximum of twelve months extended to reflect their longer term. Additionally, we generally limit the granting of deferrals on new accounts until a requisite number of payments has been received. During the deferral period, we continue to accrue and collect interest on the loan in accordance with the terms of the deferral agreement. The Company considers all individually acquired RICs that have been modified at least once, deferred for a period of 90 days or more, or deferred at least twice, as TDRs. Additionally, restructurings through bankruptcy proceedings are deemed to be TDRs. RIC TDRs are placed on non-accrual 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 . For loans on nonaccrual status, interest income is recognized on a cash basis; however, the Company continues to assess the recognition of cash received on those loans in order to identify whether certain of those loans should also be placed on a cost recovery basis. For TDR loans on nonaccrual status, the accrual of interest is resumed if a delinquent account subsequently becomes 60 days or less past due. At the time a deferral is granted on a RIC, all delinquent amounts may be deferred or paid, resulting in the classification of the loan as current and therefore not considered a delinquent account. Thereafter, the account is aged based on the timely payment of future installments in the same manner as any other account. Changes in deferral levels do not have a direct impact on the ultimate amount of consumer finance receivables charged off. However, the timing of a charge-off may be affected if the previously deferred account ultimately results in a charge-off. To the extent that deferrals impact the ultimate timing of when an account is charged off, historical charge-off ratios, loss confirmation periods, and cash flow forecasts for loans classified as TDRs used in the determination of the adequacy of the ALLL are also impacted. Increased use of deferrals may result in a lengthening of the loss confirmation period, which would increase expectations of credit losses inherent in the portfolio and therefore increase the ALLL and related provision for loan and lease losses. Changes in these ratios and periods are considered in determining the appropriate level of ALLL and related provision for loan and lease losses. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) The primary modification program for the Company’s residential mortgage and home equity portfolios is a proprietary program designed to keep customers in their homes and, when appropriate, prevent them from entering into foreclosure. The program is available to all customers facing a financial hardship regardless of their delinquency status. The main goal of the modification program is to review the customer’s entire financial condition to ensure that the proposed modified payment solution is affordable according to a specific debt-to-income ("DTI") ratio range. The main modification benefits of the program allow for term extensions, interest rate reductions, and/or deferment of principal. The Company reviews each customer on a case-by-case basis to determine which benefit or combination of benefits will be offered to achieve the target DTI range. Consumer TDRs in the residential mortgage and home equity portfolios are generally placed on non-accrual status until the Company believes repayment under the revised terms is reasonably assured and a sustained period of repayment performance has been achieved (typically six months for a monthly amortizing loan). Any loan that has remained current for the six months immediately prior to modification will remain on accrual status after the modification is implemented. The TDR classification will remain on the loan until it is paid in full or liquidated. In addition to those identified as TDRs above, accounting guidance also requires loans discharged under Chapter 7 bankruptcy to be considered TDRs and collateral-dependent, regardless of delinquency status. These loans are written down to fair market value and classified as non-accrual/non-performing for the remaining life of the loan. TDR Impact to ALLL The ALLL is established to recognize losses in funded loans intended to be HFI that are probable and can be reasonably estimated. Prior to loans being placed in TDR status, the Company generally measures its allowance under a loss contingency methodology in which consumer loans with similar risk characteristics are pooled and loss experience information is monitored for credit risk and deterioration with statistical tools considering factors such as delinquency, LTV and credit scores. Upon TDR modification, the Company generally measures impairment based on a present value of expected future cash flows methodology considering all available evidence using the effective interest rate or fair value of collateral. The amount of the required valuation allowance is equal to the difference between the loan’s impaired value and the recorded investment. RIC TDRs that subsequently default continue to have impairment measured based on the difference between the recorded investment of the RIC and the present value of expected cash flows. For the Company's other consumer TDR portfolios, impairment on subsequently defaulted loans is generally measured based on the fair value of the collateral, if applicable, less its estimated cost to sell. Typically, commercial loans whose terms are modified in a TDR will have been identified as impaired prior to modification and accounted for generally using a present value of expected future cash flows methodology, unless the loan is considered collateral-dependent. Loans considered collateral-dependent are measured for impairment based on the fair values of their collateral less its estimated cost to sell. Accordingly, upon TDR modification or if a TDR modification subsequently defaults, the allowance methodology remains unchanged. Impaired loans A loan is considered to be impaired when, based upon current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan. An insignificant delay (e.g., less than 61 days for RICs or less than 90 days for all of the Company's other loans) or insignificant shortfall in amount of payments does not necessarily result in the loan being identified as impaired. The Company considers all of its TDRs and all of its non-accrual commercial loans in excess of $1 million to be impaired as of the balance sheet date. The Company may perform an impairment analysis on loans that fail to meet this threshold if the nature of the collateral or business conditions warrant. The Company considers all individually acquired RICs that have been modified at least once, deferred for a period of 90 days or more, or deferred at least twice, as TDRs. The Company measures impairment on impaired loans based on the present value of expected future cash flows discounted at the loan's original effective interest rate, except that, as a practical expedient, the Company may measure impairment based on a loan's observable market price, or the fair value of the collateral, less the costs to sell, if the loan is a collateral-dependent loan. Some impaired loans share common risk characteristics. Such loans are collectively assessed for impairment and the Company utilizes historical loan loss experience information as part of its evaluation. When the Company determines that the present value of the estimated cash flows of an impaired loan is less than its carrying amount, the Company recognizes impairment through a provision estimate or a charge-off to the allowance. Management performs these assessments on at least a quarterly basis. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Additional discussions related to the Company’s loan and lease loss provisions is included in the “ ALLL for Loan Losses and Reserve for Unfunded Lending Commitments” section above .
LHFS	LHFS LHFS are recorded at either estimated fair value (if the FVO is elected) or the lower of cost or fair value. The Company has elected to account for most of its residential real estate mortgages originated with the intent to sell at fair value. Generally, residential loans are valued on an aggregate portfolio basis, and commercial loans are valued on an individual loan basis. Gains and losses on LHFS which are accounted for at fair value are recorded in Miscellaneous income, net. For residential mortgages for which the FVO is selected, direct loan origination costs and fees are recorded in Miscellaneous income, net at origination. All other LHFS which the Company does not have the intent and ability to hold for the foreseeable future or until maturity or payoff are carried at the lower of cost or fair value. When loans are transferred from HFI, if the recorded investment of the loan exceeds its market value at the time of initial designation as held for sale, the Company will recognize a direct write-down of the excess of the recorded investment over market value through a charge-off to the ALLL. Subsequent to the initial measurement of LHFS, market declines in the recorded investment, whether due to credit or market risk, are recorded through miscellaneous income, net as lower of cost or market adjustments.
Leases	Leases The Company provides financing for various types of equipment, aircraft, energy and power systems, and automobiles through a variety of lease arrangements. The Company’s investments in leases that are accounted for as direct financing leases are carried at the aggregate of lease payments plus estimated residual value of the leased property less unearned income, and are reported as part of LHFI in the Company’s Consolidated Balance Sheets. Leveraged leases, a form of financing lease, are carried net of non-recourse debt. The Company recognizes income over the term of the lease using the effective interest method, which provides a constant periodic rate of return on the outstanding investment on the lease. Leased vehicles under operating leases are carried at amortized cost net of accumulated depreciation and any impairment charges and presented as Operating lease assets, net in the Company’s Consolidated Balance Sheets. Leased assets acquired in a business combination such as the Change in Control are initially recorded at their estimated fair value. Leased vehicles purchased in connection with newly originated operating leases are recorded at amortized cost. The depreciation expense of the vehicles is recognized on a straight-line basis over the contractual term of the leases to the expected residual value. The expected residual value and, accordingly, the monthly depreciation expense may change throughout the term of the lease. The Company estimates expected residual values using independent data sources and internal statistical models that take into consideration economic conditions, current auction results, the Company’s remarketing abilities, and manufacturer vehicle and marketing programs. Lease payments due from customers are recorded as income within Lease income in the Company’s Consolidated Statements of Operations, unless and until a customer becomes more than 60 days delinquent, at which time the accrual of revenue is discontinued. The accrual is resumed if a delinquent account subsequently becomes 60 days or less past due. Payments from the vehicle’s manufacturer under its subvention programs are recorded as reductions to the cost of the vehicle and are recognized as an adjustment to depreciation expense on a straight-line basis over the contractual term of the lease. The Company periodically evaluates its investment in operating leases for impairment if circumstances such as a systemic and material decline in used vehicle values occurs. This would include, for example, a decline in the residual value of our lease portfolio due to an event caused by shocks to oil and gas prices that have a pronounced impact on certain models of vehicles, pervasive manufacturer defects, or other events that could systemically affect the value of a particular brand or model of leased asset, which indicates that impairment may exist. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Under the accounting for impairment or disposal of long-lived assets, residual values of leased assets under operating leases are evaluated individually for impairment. When aggregate future cash flows from the operating lease, including the expected realizable fair value of the leased asset at the end of the lease, are less than the book value of the lease, an immediate impairment write-down is recognized if the difference is deemed not recoverable. Otherwise, reductions in the expected residual value result in additional depreciation of the leased asset over the remaining term of the lease. Upon disposition, a gain or loss is recorded for any difference between the net book value of the leased asset and the proceeds from the disposition of the asset, including any insurance proceeds. Gains or losses on the sale of leased assets are included in Miscellaneous income, net, while valuation adjustments on operating lease residuals are included in Other administrative expense in the Consolidated Statements of Operations.
Premises and Equipment	Premises and Equipment Premises and equipment are carried at cost, less accumulated depreciation. Depreciation is calculated utilizing the straight-line method. Estimated useful lives are as follows: Office buildings 10 to 50 years Leasehold improvements (1) 10 to 30 years Software (2) 3 to 7 years Furniture, fixtures and equipment 3 to 10 years Automobiles 5 years (1) Leasehold improvements are depreciated over the shorter of the useful lives of the assets or the remaining term of the leases. (2) The standard depreciable period for software is three years . However, for certain software implementation projects, a seven -year period is utilized. Expenditures for maintenance and repairs are charged to Occupancy and equipment expense in the Consolidated Statements of Operations as incurred.
Equity Method Investments	Equity Method Investments The Company uses the equity method for general and limited partnership interests, limited liability companies and other unconsolidated equity investments in which the Company is considered to have significant influence over the operations of the investee. Under the equity method, the Company records its equity ownership share of net income or loss of the investee in "Other miscellaneous expenses." Investments accounted for under the equity method of accounting above are included in the caption "Other Assets" on the Consolidated Balance Sheets.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill is the excess of the purchase price over the fair value of the tangible and identifiable intangible assets and liabilities of companies acquired through business combinations accounted for under the acquisition method. Goodwill and other indefinite-lived intangible assets are not amortized on a recurring basis, but rather are subject to periodic impairment testing. The Company conducts its evaluation of goodwill impairment at the reporting unit level on an annual basis at October 1, and more frequently if events or circumstances indicate that the carrying value of a reporting unit exceeds its fair value. A reporting unit is an operating segment or one level below. An entity's goodwill impairment quantitative analysis is required to be completed unless the entity determines, based on certain qualitative factors, that it is more likely than not (that is, a likelihood of more than 50 percent) that the fair value of a reporting unit is greater than its carrying amount, including goodwill, in which case no further analysis is required. An entity has an unconditional option to bypass the preceding qualitative assessment (often referred to as step 0) for any reporting unit in any period and proceed directly to the quantitative goodwill impairment test. The quantitative test includes a comparison of the fair value of each reporting unit to its respective carrying amount, including its allocated goodwill. If the fair value of the reporting unit is in excess of the carrying value, the related goodwill is considered not to be impaired and no further analysis is necessary. If the carrying value of the reporting unit is higher than the fair value, the impairment is measured as the excess of carrying value over fair value. A recognized impairment charge cannot exceed the amount of goodwill allocated to a reporting unit and cannot subsequently be reversed even if the fair value of the reporting unit recovers. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) The Company's intangible assets consist of assets purchased or acquired through business combinations, including tradenames and dealer networks. Certain intangible assets are amortized over their useful lives. The Company evaluates identifiable intangibles for impairment when an indicator of impairment exists, but not less than annually. Separable intangible assets that are not deemed to have an indefinite life continue to be amortized over their useful lives.
MSRs	MSRs The Company has elected to measure most of its residential MSRs at fair value to be consistent with the risk management strategy to hedge changes in the fair value of these assets. The fair value of residential MSRs is estimated by using a cash flow valuation model which calculates the present value of estimated future net servicing cash flows, taking into consideration actual and expected mortgage loan prepayment rates, discount rates, servicing costs, and other economic factors which are determined based on current market conditions. Assumptions incorporated into the residential MSRs valuation model reflect management's best estimate of factors that a market participant would use in valuing the residential MSRs. Although sales of residential MSRs do occur, residential MSRs do not trade in an active market with readily observable prices. Those MSRs not accounted for at fair value are accounted for at amortized cost, less impairment. As a benchmark for the reasonableness of the residential MSRs' fair value, opinions of value from independent third parties ("Brokers") are obtained. Brokers provide a range of values based upon their own discounted cash flow (“DCF") calculations of our portfolio that reflect conditions in the secondary market and any recently executed servicing transactions. Management compares the internally-developed residential MSR values to the ranges of values received from Brokers. If the residential MSRs fair value falls outside the Brokers' ranges, management will assess whether a valuation adjustment is warranted. Residential MSRs value is considered to represent a reasonable estimate of fair value.
BOLI	BOLI BOLI represents the cash surrender value of life insurance policies for certain current and former employees who have provided positive consent to allow the Bank to be the beneficiary of such policies. Increases in the net cash surrender value of the policies, as well as insurance proceeds received, are recorded in non-interest income, and are not subject to income taxes.
Other Real Estate Owned (“OREO) and Other Repossessed Assets	Other Real Estate Owned (“OREO") and Other Repossessed Assets OREO and other repossessed assets consist of properties, vehicles, and other assets acquired by, or in lieu of, foreclosure or repossession in partial or total satisfaction of NPLs, including RICs and leases. Assets obtained in satisfaction of a loan are recorded at the estimated fair value minus estimated costs to sell based upon the asset's appraisal value at the date of transfer. The excess of the carrying value of the loan over the fair value of the asset minus estimated costs to sell are charged to the ALLL at the initial measurement date. Subsequent to the acquisition date, OREO and repossessed assets are carried at the lower of cost or estimated fair value, net of estimated cost to sell. Any declines in the fair value of OREO and repossessed assets below the initial cost basis are recorded through a valuation allowance with a charge to non-interest income. Increases in the fair value of OREO and repossessed assets net of estimated selling costs will reverse the valuation allowance, but only up to the cost basis which was established at the initial measurement date. Costs of holding the assets are recorded as operating expenses, except for significant property improvements, which are capitalized to the extent that the carrying value does not exceed the estimated fair value. The Company generally begins vehicle repossession activity once a customer's account becomes 60 days past due. The customer has an opportunity to redeem the repossessed vehicle by paying all outstanding balances, including finance changes and fees. Any vehicles not redeemed are sold at auction. OREO and other repossessed assets are recorded within Other assets on the Consolidated Balance Sheets.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Company uses derivative financial instruments primarily to help manage exposure to interest rate, foreign exchange, equity, and credit risk. Derivative financial instruments are also used to reduce the effects that changes in interest rates may have on net income, the fair value of assets and liabilities, and cash flows. The Company also enters into derivatives with customers to facilitate their risk management activities, and often sells commercial loan customers derivative products to hedge interest rate risk associated with loans made the Company. The Company uses derivative financial instruments as risk management tools and not for speculative trading purposes for its own account. Derivative financial instruments are recognized as either assets or liabilities in the consolidated balance sheets at fair value. The accounting for changes in the fair value of each derivative financial instrument depends on whether it has been designated and qualifies as a hedge for accounting purposes, as well as the type of hedging relationship identified. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset, liability or firm commitment attributable to a particular risk such as interest rate risk are considered fair value hedges. Derivative instruments designated in a hedge relationship to mitigate exposure to variability in expected future cash flows or other types of forecasted transactions are considered cash flow hedges. The Company formally documents the relationships of qualifying hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking each hedge transaction. Fair value hedges that are highly effective are accounted for by recording the change in the fair value of the derivative instrument and the related hedged asset, liability or firm commitment on the Consolidated Balance Sheets, with the corresponding income or expense recorded in the Consolidated Statements of Operations. The adjustment to the hedged asset or liability is included in the basis of the hedged item, while the fair value of the derivative is recorded as an other asset or other liability. Actual cash receipts or payments and related amounts accrued during the period on derivatives included in a fair value hedge relationship are recorded as adjustments to the income or expense associated with the hedged asset or liability. Cash flow hedges that are highly effective are accounted for by recording the fair value of the derivative instrument on the Consolidated Balance Sheets as an asset or liability, with a corresponding charge or credit for the change in the fair value of the derivative, net of tax, recorded in accumulated OCI within stockholder's equity in the accompanying Consolidated Balance Sheets. Amounts are reclassified from accumulated OCI to the Consolidated Statements of Operations in the period or periods the hedged transaction affects earnings. In the case in which certain cash flow hedging relationships have been terminated, the Company continues to defer the net gain or loss in accumulated OCI and reclassifies it into interest expense as the future cash flows occur, unless it becomes probable that the future cash flows will not occur. We discontinue hedge accounting when it is determined that the derivative no longer qualifies as an effective hedge; the derivative expires or is sold, terminated or exercised; the derivative is de-designated as a fair value or cash flow hedge; or, for a cash flow hedge, it is no longer probable that the forecasted transaction will occur by the end of the originally specified time period. If we determine that the derivative no longer qualifies as a fair value or cash flow hedge and hedge accounting is discontinued, the derivative will continue to be recorded on the balance sheet at its fair value, with changes in fair value included in current earnings. For a discontinued fair value hedge, the previously hedged item is no longer adjusted for changes in fair value. Changes in the fair value of derivatives not designated in hedging relationships are recognized immediately in the Consolidated Statements of Operations. Derivatives are classified in the Consolidated Balance Sheets as "Other assets" or "Other liabilities," as applicable.
Income Taxes	Income Taxes The Company accounts for income taxes under the asset and liability method. Deferred taxes are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. On December 22, 2017, the TCJA was enacted. Effective January 1, 2018, the TCJA, among other things, reduced the federal corporate income tax rate from 35% to 21%. Deferred tax assets and liabilities are measured using enacted tax rates that will apply to taxable income in the years in which those temporary differences are expected to reverse or be realized. The effect of a change in tax rates on deferred tax assets and liabilities is recognized as income or expense in the period that includes the enactment date. As a result of the TCJA's enactment, the effect of a change in tax rates on deferred tax assets and liabilities is recognized as income or expense in the period that includes the enactment date. A valuation allowance will be established if the Company determines that it is more likely than not that a deferred tax asset will not be realized. This requires periodic analysis of the carrying amount of deferred tax assets and when the deferred tax assets will be realized in future periods. Consideration is given to all positive and negative evidence related to the realization of deferred tax assets. In establishing a provision for income tax expense, the Company must make judgments and interpretations about the application of inherently complex tax laws of the U.S., its states and municipalities, and abroad. Actual income taxes paid may vary from estimates depending upon changes in income tax laws, actual results of operations, and the final audit of tax returns by taxing authorities. Tax assessments may arise several years after tax returns have been filed. The Company reviews its tax balances quarterly and as new information becomes available. Interest and penalties on income tax payments are included within Income tax provision on the Consolidated Statements of Operations. NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) The Company recognizes tax benefits in its financial statements when it is more likely than not the related tax position will be sustained upon examination by tax authorities. Such tax positions are initially and subsequently measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with the taxing authority, assuming full knowledge of the position and all relevant facts.
Sale of RICs and Leases	Sales of RICs and Leases The Company, through SC, transfers RICs into newly formed Trusts which then issue one or more classes of notes payable backed by the RICs. The Company’s continuing involvement with the credit facilities and Trusts are in the form of servicing loans held by the special purpose entities ("SPEs") and, generally, through holding a residual interest in the SPE. These transactions are structured without recourse. The Trusts are considered VIEs under GAAP and are consolidated when the Company has: (a) power over the significant activities of the entity and (b) an obligation to absorb losses or the right to receive benefits from the VIE which are potentially significant to the VIE. The Company has power over the significant activities of those Trusts as servicer of the financial assets held in the Trust. Servicing fees are not considered significant variable interests in the Trusts; however, when the Company also retains a residual interest in the Trust, either in the form of a debt security or equity interest, the Company has an obligation to absorb losses or the right to receive benefits that are potentially significant to the SPE. Accordingly, these Trusts are consolidated within the Consolidated Financial Statements, and the associated RICs, borrowings under credit facilities and securitization notes payable remain on the Consolidated Balance Sheets. Securitizations involving Trusts in which the Company does not retain a residual interest or any other debt or equity interest are treated as sales of the associated RICs. While these Trusts are included in our Consolidated Financial Statements, they are separate legal entities; thus, the finance receivables and other assets sold to these Trusts are legally owned by the Trusts, are available only to satisfy the notes payable related to the securitized RICs, and are not available to the Company's creditors or other subsidiaries. The Company also sells RICs and leases to VIEs or directly to third parties, which the Company may determine meet sale accounting treatment in accordance with applicable guidance. Due to the nature, purpose, and activity of these transactions, the Company either does not hold potentially significant variable interests or is not the primary beneficiary as a result of the Company's limited further involvement with the financial assets. The transferred financial assets are removed from the Company's Consolidated Balance Sheets at the time the sale is completed. The Company generally remains the servicer of the financial assets and receives servicing fees. The Company also recognizes a gain or loss for the difference between the fair value, as measured based on sales proceeds plus (or minus) the value of any servicing asset (or liability) retained and the carrying value of the assets sold.
Stock-Based Compensation	Stock-Based Compensation The Company, through Santander, sponsors stock plans under which incentive and non-qualified stock options and non-vested stock may be granted periodically to certain employees. The Company recognizes compensation expense related to stock options and non-vested stock awards based upon the fair value of the awards on the date of the grant, which is charged to earnings over the requisite service period (i.e., the vesting period). The impact of the forfeiture of awards is recognized as forfeitures occur. Amounts in the Consolidated Statements of Operations associated with the Company's stock compensation plan were negligible in all years presented. The Company assumed stock-based arrangements in connection with the Change in Control. The Company was required to recognize stock option awards that were outstanding as of the Change in Control date at fair value. The portion of the fair value measurement of the share-based payments that is attributable to pre-business combination service is recognized as NCI and the portion relating to any remaining post-business combination service is recognized as stock compensation expense over the remaining vesting period of the awards in the Company’s post-business combination financial statements.
Guarantees	Guarantees Certain off-balance sheet financial instruments of the Company meet the definition of a guarantee that require the Company to perform and make future payments in the event specified triggering events or conditions were to occur over the term of the guarantee. In accordance with the applicable accounting rules, it is the Company’s accounting policy to recognize a liability at inception associated with such a guarantee at the greater of the fair value of the guarantee or the Company's estimate of the contingent liability arising from the guarantee. Subsequent to initial recognition, the liability is adjusted based on the passage of time to perform under the guarantee and the changes to the probabilities of occurrence related to the specified triggering events or conditions that would require the Company to perform on the guarantee.
Subsequent Events	Subsequent Events The Company evaluated events from the date of the Consolidated Financial Statements on December 31, 2018 through the issuance of these Consolidated Financial Statements , and has determined that there have been no material events that would require recognition in its Consolidated Financial Statements or disclosure in the Notes to the Consolidated Financial Statements for the year ended December 31, 2018 other than the transactions disclosed in Note 11 and Note 23 of these Consolidated Financial Statements .
Commercial Lending Asset Quality Indicators	Commercial Lending Asset Quality Indicators The Company's Risk Department performs a credit analysis and classifies certain loans over an internal threshold based on the commercial lending classifications described below: PASS. Asset is well-protected by the current net worth and paying capacity of the obligor or guarantors, if any, or by the fair value less costs to acquire and sell any underlying collateral in a timely manner. SPECIAL MENTION. Asset has potential weaknesses that deserve management’s close attention, which, if left uncorrected, may result in deterioration of the repayment prospects for an asset at some future date. Special mention assets are not adversely classified. SUBSTANDARD. Asset is inadequately protected by the current net worth and paying capacity of the obligor or by the collateral pledged, if any. A well-defined weakness or weaknesses exist that jeopardize the liquidation of the debt. The loans are characterized by the distinct possibility that the Company will sustain some loss if deficiencies are not corrected. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) DOUBTFUL. Exhibits the inherent weaknesses of a substandard credit. Additional characteristics exist that make collection or liquidation in full highly questionable and improbable, on the basis of currently known facts, conditions and values. Possibility of loss is extremely high, but because of certain important and reasonable specific pending factors which may work to the advantage and strengthening of the credit, an estimated loss cannot yet be determined. LOSS. Credit is considered uncollectible and of such little value that it does not warrant consideration as an active asset. There may be some recovery or salvage value, but there is doubt as to whether, how much or when the recovery would occur.
TDRs	Commercial Loan TDRs All of the Company’s commercial loan modifications are based on the circumstances of the individual customer, including specific customers' complete relationships with the Company. Loan terms are modified to meet each borrower’s specific circumstances at a point in time and may allow for modifications such as term extensions and interest rate reductions. Modifications for commercial loan TDRs generally, although not always, result in bifurcation of the original loan into A and B notes. The A note is restructured to allow for upgraded risk rating and return to accrual status after a sustained period of payment performance has been achieved (typically six months for monthly payment schedules). The B note, if any, is structured as a deficiency note; the balance is charged off but the debt is usually not forgiven. Commercial TDRs are generally placed on non-accrual status until the Company believes repayment under the revised terms is reasonably assured and a sustained period of repayment performance has been achieved (typically six months for a monthly amortizing loan). TDRs are subject to analysis for specific reserves by either calculating the present value of expected future cash flows or, if collateral-dependent, calculating the fair value of the collateral less its estimated cost to sell. The TDR classification will remain on the loan until it is paid in full or liquidated. Consumer Loan TDRs The primary modification program for the Company’s residential mortgage and home equity portfolios is a proprietary program designed to keep customers in their homes and, when appropriate, prevent them from entering into foreclosure. The program is available to all customers facing a financial hardship regardless of their delinquency status. The main goal of the modification program is to review the customer’s entire financial condition to ensure that the proposed modified payment solution is affordable according to a specific DTI ratio range. The main modification benefits of the program allow for term extensions, interest rate reductions, and/or deferment of principal. The Company reviews each customer on a case-by-case basis to determine which benefit or combination of benefits will be offered to achieve the target DTI range. For the Company’s other consumer portfolios, including RICs and auto loans, the terms of the modifications generally include one or a combination of: a reduction of the stated interest rate of the loan to a rate of interest lower than the current market rate for new debt with similar risk, an extension of the maturity date or principal forgiveness. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Consumer TDRs excluding RICs are generally placed on non-accrual status until the Company believes repayment under the revised terms is reasonably assured and a sustained period of repayment performance has been achieved (typically six months for a monthly amortizing loan). Any loan that has remained current for the six months immediately prior to modification will remain on accrual status after the modification is implemented. RIC TDRs are placed on nonaccrual status when the Company believes repayment under the revised terms is not reasonably assured, and considered for return to accrual when a sustained period of repayment performance has been achieved. The TDR classification will remain on the loan until it is paid in full or liquidated. In addition to loans identified as TDRs above, the guidance also requires loans discharged under Chapter 7 bankruptcy proceedings to be considered TDRs and collateral-dependent, regardless of delinquency status. TDRs that are collateral-dependent loans must be written down to the fair market value of the collateral, less costs to sell and classified as non-accrual/NPLs for the remaining life of the loan. TDR Impact to ALLL The ALLL is established to recognize losses inherent in funded loans intended to be HFI that are probable and can be reasonably estimated. Prior to loans being placed in TDR status, the Company generally measures its allowance under a loss contingency methodology in which consumer loans with similar risk characteristics are pooled and loss experience information is monitored for credit risk and deterioration with statistical tools considering factors such as delinquency, LTV and credit scores. Upon TDR modification, the Company generally measures impairment based on a present value of expected future cash flows methodology considering all available evidence, by discounting expected future cash flows using the original effective interest rate or fair value of collateral less costs to sell. The amount of the required ALLL is equal to the difference between the loan’s impaired value and the recorded investment. RIC TDRs that subsequently default continue to have impairment measured based on the difference between the recorded investment of the RIC and the present value of expected cash flows. For the Company's other consumer TDR portfolios, impairment on subsequent defaults is generally measured based on the fair value of the collateral, if applicable, less its estimated cost to sell. Typically, commercial loans whose terms are modified in a TDR will have been identified as impaired prior to modification and accounted for generally using a present value of expected future cash flows methodology, unless the loan is considered collateral-dependent. Loans considered collateral-dependent are measured for impairment based on their fair values of collateral less estimated cost to sell. Accordingly, upon TDR modification or if a TDR modification subsequently defaults, the allowance methodology remains unchanged.

BASIS OF PRESENTATION AND ACC_3

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Schedule of Error Corrections and Prior Period Adjustments	The following tables summarize the impacts of the corrections on the Company's Consolidated Balance Sheet and Consolidated Statement of Operations for the periods indicated: As of For the year ended December 31, 2017 December 31, 2017 As Reported Corrections As Revised As Reported Corrections As Revised ASSETS INTEREST INCOME LHFI $ 80,740,852 $ 49,829 $ 80,790,681 Loans $ 7,287,400 $ 89,945 $ 7,377,345 ALLL (3,911,575 ) (83,312 ) (3,994,887 ) TOTAL INTEREST INCOME 7,786,134 89,945 7,876,079 Other assets 3,632,427 13,978 3,646,405 NET INTEREST INCOME 6,334,005 89,945 6,423,950 TOTAL ASSETS 128,294,030 (19,505 ) 128,274,525 Provision for credit losses 2,650,494 109,450 2,759,944 LIABILITIES NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES 3,683,511 (19,505 ) 3,664,006 Deferred tax liabilities, net 969,996 (4,706 ) 965,290 Income tax provision / (benefit) (152,334 ) (4,706 ) (157,040 ) TOTAL LIABILITIES 104,588,399 (4,706 ) 104,583,693 NET INCOME including NCI 972,774 (14,799 ) 957,975 STOCKHOLDER'S EQUITY Less: Net income attributable to NCI 411,707 (6,082 ) 405,625 Retained earnings 3,462,674 (8,717 ) 3,453,957 NET INCOME ATTRIBUTABLE TO SHUSA $ 561,067 $ (8,717 ) $ 552,350 TOTAL SHUSA STOCKHOLDER'S EQUITY 21,182,698 (8,717 ) 21,173,981 NCI 2,522,933 (6,082 ) 2,516,851 TOTAL STOCKHOLDER'S EQUITY 23,705,631 (14,799 ) 23,690,832 TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY $ 128,294,030 $ (19,505 ) $ 128,274,525 The following table summarizes the impacts of the corrections on the Company's Condensed Consolidated SCF for the period indicated: For the year ended December 31, 2017 As Reported (1) Corrections As Revised Net cash provided by operating activities $ 4,888,092 $ 75,968 $ 4,964,060 Net cash provided by (used in) investing activities $ 3,357,147 $ (75,968 ) $ 3,281,179 (1) Amounts have been adjusted for the adoption of ASU 2016-15 and ASU 2016-18. In addition to the revision of the Company's Consolidated Financial Statements, information within the Notes to the Consolidated Financial Statements has been revised to reflect the correction of errors discussed above. The following tables summarize the impacts of the correction of those items: December 31, 2017 As Reported Corrections As Revised Non-performing - RICs and auto loans - originated $ 1,816,226 $ (559,104 ) $ 1,257,122 Total non-performing loans 2,949,997 (559,104 ) 2,390,893 Total non-performing assets 3,293,656 (559,104 ) 2,734,552 NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) December 31, 2017 As Reported Corrections As Revised 30-89 DPD (1) 90+ DPD Current 30-89 DPD 90+ DPD Current 30-89 DPD 90+ DPD Current RICs and auto loans - originated $ 3,405,721 $ 327,045 $ 20,449,706 $ 196,587 $ 29,971 $ (176,729 ) $ 3,602,308 $ 357,016 $ 20,272,977 Total loans $ 4,349,047 $ 972,384 $ 77,941,907 $ 196,587 $ 29,971 $ (176,729 ) $ 4,545,634 $ 1,002,355 $ 77,765,178 (1) Days past due ("DPD").
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	Those impacts were attributed to the following ASUs adopted during the period: Impact to Retained earnings (in thousands) Adoption of ASU 2014-09, Revenue Recognition $ 3,300 Adoption of ASU 2016-1, Financial Instruments (418 ) Adoption of ASU 2018-02, Statement of Comprehensive Income 39,094 Cumulative-effect adjustment upon adoption of new accounting standards 41,976 Other adjustments at subsidiary 5,573 Net impact to opening retained earnings $ 47,549 The cumulative-effect of the changes made to our January 1, 2018 Consolidated Balance Sheet for the adoption of the new revenue recognition standard were as follows: (in thousands) Balance at December 31, 2017 Adjustments Balance at January 1, 2018 Assets - LHFI $ 80,790,681 $ 5,514 $ 80,796,195 Other assets 3,646,405 (3,592 ) 3,642,813 Total assets 128,274,525 1,922 128,276,447 Liabilities - other liabilities 799,403 (1,378 ) 798,025 Total liabilities 104,583,693 (1,378 ) 104,582,315 Stockholders' equity - retained earnings 3,453,957 3,300 3,457,257 Total stockholders' equity 23,690,832 3,300 23,694,132 The following discloses the impact on the Company's Consolidated Balance Sheet at December 31, 2018 and the Consolidated Statement of Operations for the year ended December 31, 2018 of the adoption of this new accounting standard: December 31, 2018 (in thousands) As Reported Balance Without Adoption Assets - LHFI $ 87,045,868 $ 87,041,454 Other assets 3,653,336 3,656,543 Total assets 135,634,285 135,633,078 Liabilities - other liabilities 912,775 914,153 Total liabilities 111,787,053 111,788,431 Stockholders' equity - retained earnings 3,783,405 3,780,820 Total stockholders' equity 23,847,232 23,844,647 NOTE 1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (continued) Year Ended December 31, 2018 (in thousands) As Reported Balance Without Adoption Non-interest income Consumer and commercial fees $ 568,147 $ 565,137 Miscellaneous income/(loss) 307,282 293,973 Total non-interest income 3,244,308 3,227,989 General, administrative and other expenses Technology, outside service, and marketing expense 590,249 582,614 Loan expense 384,899 395,331 Other administrative expenses 608,989 588,773 Total general, administrative, and other expenses 5,832,325 5,814,906 Income before income tax provision 1,416,935 1,418,035 Income tax provision 425,900 426,285 Net income including NCI $ 991,035 $ 991,750
Premises and Equipment	Depreciation is calculated utilizing the straight-line method. Estimated useful lives are as follows: Office buildings 10 to 50 years Leasehold improvements (1) 10 to 30 years Software (2) 3 to 7 years Furniture, fixtures and equipment 3 to 10 years Automobiles 5 years (1) Leasehold improvements are depreciated over the shorter of the useful lives of the assets or the remaining term of the leases. (2) The standard depreciable period for software is three years . However, for certain software implementation projects, a seven -year period is utilized. A summary of premises and equipment, less accumulated depreciation, follows: (in thousands) December 31, 2018 December 31, 2017 Land $ 87,531 $ 89,350 Office buildings 185,218 201,927 Furniture, fixtures, and equipment 427,245 434,591 Leasehold improvement 509,314 551,442 Computer software 990,429 1,002,260 Automobiles and other 1,475 1,146 Total premise and equipment 2,201,212 2,280,716 Less accumulated depreciation (1,395,272 ) (1,431,655 ) Total premises and equipment, net $ 805,940 $ 849,061

INVESTMENT SECURITIES (Tables)

INVESTMENT SECURITIES (Tables)	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Summary of Debt Securities, Available-for-sale	The following tables present the amortized cost, gross unrealized gains and losses and approximate fair values of debt securities AFS at the dates indicated: December 31, 2018 December 31, 2017 (in thousands) Amortized Gross Gross Fair Amortized Gross Gross Fair U.S. Treasury securities $ 1,815,914 $ 560 $ (11,729 ) $ 1,804,745 $ 1,006,219 $ — $ (8,107 ) $ 998,112 Corporate debt securities 160,164 12 (62 ) 160,114 11,639 21 — 11,660 Asset-backed securities (“ABS”) 435,464 3,517 (2,144 ) 436,837 501,575 6,901 (1,314 ) 507,162 Equity securities (1) — — — — 11,428 — (614 ) 10,814 State and municipal securities 16 — — 16 23 — — 23 Mortgage-backed securities (“MBS”): Government National Mortgage Association ("GNMA") - Residential 2,829,075 861 (85,675 ) 2,744,261 4,745,998 3,531 (62,524 ) 4,687,005 GNMA - Commercial 954,651 1,250 (19,515 ) 936,386 1,377,449 179 (19,917 ) 1,357,711 Federal Home Loan Mortgage Corporation ("FHLMC") and Federal National Mortgage Association ("FNMA") - Residential 5,687,221 267 (188,515 ) 5,498,973 6,958,433 1,093 (141,393 ) 6,818,133 FHLMC and FNMA - Commercial 51,808 384 (537 ) 51,655 23,003 — (440 ) 22,563 Total investments in debt securities AFS $ 11,934,313 $ 6,851 $ (308,177 ) $ 11,632,987 $ 14,635,767 $ 11,725 $ (234,309 ) $ 14,413,183 (1) Reflects the reclassification of the Company's investments in equity securities to Other investments as a result of the adoption of ASU 2016-01 as of January 1, 2018.
Summary of Held-to-maturity Securities	The following tables present the amortized cost, gross unrealized gains and losses and approximate fair values of debt securities HTM at the dates indicated: December 31, 2018 December 31, 2017 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Loss Fair Value Amortized Gross Gross Fair GNMA - Residential $ 1,718,687 $ 1,806 $ (54,184 ) $ 1,666,309 $ 1,447,669 $ 722 $ (26,150 ) $ 1,422,241 GNMA - Commercial 1,031,993 1,426 (23,679 ) 1,009,740 352,139 325 (767 ) 351,697 Total investments in debt securities HTM $ 2,750,680 $ 3,232 $ (77,863 ) $ 2,676,049 $ 1,799,808 $ 1,047 $ (26,917 ) $ 1,773,938
Investments Classified by Contractual Maturity Date	Contractual maturities of the Company’s AFS debt securities at December 31, 2018 were as follows: (in thousands) Due Within One Year Due After 1 Within 5 Years Due After 5 Within 10 Years Due After 10 Years/No Maturity Total (1) Weighted Average Yield (2) U.S Treasury and government agency $ 735,379 $ 1,069,366 $ — $ — $ 1,804,745 1.78 % Corporate debt securities 160,101 — 13 — 160,114 3.33 % ABS 251,958 75,225 17,681 91,973 436,837 3.70 % State and municipal securities — 16 — — 16 7.49 % MBS: GNMA - Residential — 2,625 69,463 2,672,173 2,744,261 2.63 % GNMA - Commercial — — — 936,386 936,386 2.74 % FHLMC and FNMA - Residential — 6,089 191,423 5,301,461 5,498,973 2.51 % FHLMC and FNMA - Commercial — 7,364 24,169 20,122 51,655 2.98 % Total fair value $ 1,147,438 $ 1,160,685 $ 302,749 $ 9,022,115 $ 11,632,987 2.50 % Weighted Average Yield 2.52 % 1.90 % 2.24 % 2.59 % 2.50 % Total amortized cost $ 1,145,692 $ 1,170,312 $ 309,158 $ 9,309,151 $ 11,934,313 (1) The maturities above do not represent the effective duration of the Company's portfolio, since the amounts above are based on contractual maturities and do not contemplate anticipated prepayments. (2) Yields on tax-exempt securities are calculated on a tax equivalent basis and are based on the statutory federal tax rate. NOTE 3. INVESTMENT SECURITIES (continued) Contractual maturities of the Company’s HTM debt securities at December 31, 2018 were as follows: (in thousands) Due Within One Year Due After 1 Within 5 Years Due After 5 Within 10 Years Due After 10 Years/No Maturity Total (1) Weighted Average Yield MBS: GNMA - Residential $ — $ — $ — $ 1,666,309 $ 1,666,309 2.56 % GNMA - Commercial — — — 1,009,740 1,009,740 2.61 % Total fair value $ — $ — $ — $ 2,676,049 $ 2,676,049 2.58 % Weighted average yield — % — % — % 2.58 % 2.58 % Total amortized cost $ — $ — $ — $ 2,750,680 $ 2,750,680 (1) The maturities above do not represent the effective duration of the Company's portfolio, since the amounts above are based on contractual maturities and do not contemplate anticipated prepayments.
Gross Unrealized Loss and Fair Value of Debt Securities Available-for-Sale	The following tables present the aggregate amount of unrealized losses as of December 31, 2018 and December 31, 2017 on securities in the Company’s AFS investment portfolios classified according to the amount of time those securities have been in a continuous loss position: December 31, 2018 December 31, 2017 Less than 12 months 12 months or longer Less than 12 months 12 months or longer (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Fair Value Unrealized U.S. Treasury securities $ 288,660 $ (315 ) $ 914,212 $ (11,414 ) $ 998,112 $ (8,107 ) $ — $ — Corporate debt securities 152,247 (62 ) 13 — — — — — ABS 31,888 (249 ) 77,766 (1,895 ) 8,013 (125 ) 103,559 (1,189 ) Equity securities (1) — — — — 335 (2 ) 10,398 (612 ) MBS: GNMA - Residential 102,418 (2,014 ) 2,521,278 (83,661 ) 1,236,716 (8,600 ) 2,583,955 (53,924 ) GNMA - Commercial 199,495 (2,982 ) 622,989 (16,533 ) 1,022,452 (11,492 ) 251,209 (8,425 ) FHLMC and FNMA - Residential 237,050 (5,728 ) 5,236,028 (182,787 ) 3,429,678 (32,899 ) 3,017,533 (108,494 ) FHLMC and FNMA - Commercial — — 21,819 (537 ) 6,948 (103 ) 15,614 (337 ) Total investments in debt securities AFS $ 1,011,758 $ (11,350 ) $ 9,394,105 $ (296,827 ) $ 6,702,254 $ (61,328 ) $ 5,982,268 $ (172,981 ) (1) Reflects the reclassification of the Company's investments in equity securities to Other investments as a result of the adoption of ASU 2016-01 as of January 1, 2018.
Gross Unrealized Loss and Fair Value of Debt Securities Held-to-maturity	The following tables present the aggregate amount of unrealized losses as of December 31, 2018 and December 31, 2017 on debt securities in the Company’s HTM investment portfolios classified according to the amount of time those securities have been in a continuous loss position: December 31, 2018 December 31, 2017 Less than 12 months 12 months or longer Less than 12 months 12 months or longer (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Fair Value Unrealized MBS: GNMA - Residential $ 205,573 $ (4,810 ) $ 1,295,554 $ (49,374 ) $ 434,322 $ (6,419 ) $ 739,612 $ (19,731 ) GNMA - Commercial 221,250 (5,572 ) 629,847 (18,107 ) 118,951 (767 ) — — Total investments in debt securities HTM $ 426,823 $ (10,382 ) $ 1,925,401 $ (67,481 ) $ 553,273 $ (7,186 ) $ 739,612 $ (19,731 )
Gains (Losses) and Proceeds on Sales of Investment Securities	Proceeds from sales of investments in debt securities and the realized gross gains and losses from those sales were as follows: Year Ended December 31, (in thousands) 2018 2017 2016 Proceeds from the sales of AFS securities $ 1,262,409 $ 3,256,378 $ 6,755,299 Gross realized gains $ 5,517 $ 22,224 $ 61,344 Gross realized losses (12,234 ) (24,668 ) (3,797 ) OTTI — — (44 ) Net realized gains/(losses) (1) $ (6,717 ) $ (2,444 ) $ 57,503 (1) Includes net realized gain/(losses) on trading securities of $(1.4) million , $(4.2) million and $(0.3) million for the years ended December 31, 2018 , 2017 and 2016 , respectively.
Schedule of Other Investments	Other Investments consisted of the following as of: (in thousands) December 31, 2018 December 31, 2017 FHLB of Pittsburgh and FRB stock $ 631,239 $ 516,693 Low Income Housing Tax Credit investments ("LIHTC") 163,113 88,170 Equity securities not held for trading (1) 10,995 — CDs with a maturity greater than 90 days — 54,000 Trading securities 10 1 Total $ 805,357 $ 658,864 (1) Reflects the reclassification of the Company's investments in equity securities to Other investments as a result of the adoption of ASU 2016-01 as of January 1, 2018.

LOANS AND ALLOWANCE FOR CREDI_2

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables)	12 Months Ended
	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Abstract]
Schedule of Loans Receivable	The following presents the composition of the gross loans and leases HFI by portfolio and by rate type: December 31, 2018 December 31, 2017 (dollars in thousands) Amount Percent Amount Percent Commercial LHFI: Commercial real estate ("CRE") loans $ 8,704,481 10.0 % $ 9,279,225 11.5 % Commercial and industrial ("C&I") loans 15,738,158 18.1 % 14,438,311 17.9 % Multifamily loans 8,309,115 9.5 % 8,274,435 10.1 % Other commercial (2) 7,630,004 8.8 % 7,174,739 8.9 % Total commercial LHFI 40,381,758 46.4 % 39,166,710 48.4 % Consumer loans secured by real estate: Residential mortgages 9,884,462 11.4 % 8,846,765 11.0 % Home equity loans and lines of credit 5,465,670 6.3 % 5,907,733 7.3 % Total consumer loans secured by real estate 15,350,132 17.7 % 14,754,498 18.3 % Consumer loans not secured by real estate: RICs and auto loans - originated (4) 28,532,085 32.8 % 23,131,253 28.6 % RICs and auto loans - purchased 803,135 0.9 % 1,834,868 2.3 % Personal unsecured loans 1,531,708 1.8 % 1,285,677 1.6 % Other consumer (3) 447,050 0.4 % 617,675 0.8 % Total consumer loans 46,664,110 53.6 % 41,623,971 51.6 % Total LHFI (1) $ 87,045,868 100.0 % $ 80,790,681 100.0 % Total LHFI: Fixed rate $ 56,696,491 65.1 % $ 50,703,619 62.8 % Variable rate 30,349,377 34.9 % 30,087,062 37.2 % Total LHFI (1) $ 87,045,868 100.0 % $ 80,790,681 100.0 % (1) Total LHFI includes deferred loan fees, net of deferred origination costs and unamortized purchase premiums, net of discounts as well as purchase accounting adjustments. These items resulted in a net increase in the loan balances of $1.4 billion and $1.3 billion as of December 31, 2018 and December 31, 2017 , respectively. (2) Other commercial includes commercial equipment vehicle financing ("CEVF") leveraged leases and loans. (3) Other consumer primarily includes RV and marine loans. (4) Beginning in 2018, the Bank has an agreement with SC by which SC provides the Bank with origination support services in connection with the processing, underwriting and purchase of RICs, primarily from Chrysler dealers. The composition of the portfolio segment is as follows: (in thousands) December 31, 2018 December 31, 2017 RICs - Purchased HFI: Unpaid principal balance ("UPB") (1) $ 844,582 $ 1,929,548 UPB - FVO (2) 9,678 24,926 Total UPB 854,260 1,954,474 Purchase marks (3) (51,125 ) (119,606 ) Total RICs - Purchased HFI 803,135 1,834,868 RICs - Originated HFI: UPB (1) 27,049,875 23,423,031 Net discount (135,489 ) (309,920 ) Total RICs - Originated 26,914,386 23,113,111 SBNA auto loans 1,617,699 18,142 Total RICs - originated post-Change in Control 28,532,085 23,131,253 Total RICs and auto loans HFI $ 29,335,220 $ 24,966,121 (1) UPB does not include amounts related to the loan receivables - unsecured and loan receivables from dealers due to the short-term and revolving nature of these receivables. (2) The Company elected to account for these loans, which were acquired with evidence of credit deterioration, under the FVO. (3) Includes purchase marks of $2.1 million and $5.5 million related to purchase loan portfolios on which we elected to apply the FVO at December 31, 2018 and December 31, 2017 , respectively.
Allowance for Credit Losses by Portfolio Segment	The activity in the ACL by portfolio segment for the years ended December 31, 2018 , 2017 , and 2016 was as follows: Year Ended December 31, 2018 (in thousands) Commercial Consumer Unallocated Total ALLL, beginning of period $ 443,796 $ 3,504,068 $ 47,023 $ 3,994,887 Provision for loan and lease losses 45,897 2,306,896 — 2,352,793 Charge-offs (108,750 ) (4,974,547 ) — (5,083,297 ) Recoveries 60,140 2,572,607 — 2,632,747 Charge-offs, net of recoveries (48,610 ) (2,401,940 ) — (2,450,550 ) ALLL, end of period $ 441,083 $ 3,409,024 $ 47,023 $ 3,897,130 Reserve for unfunded lending commitments, beginning of period (2) $ 103,835 $ 5,276 $ — $ 109,111 (Release of) / Provision for reserve for unfunded lending commitments (13,647 ) 752 — (12,895 ) Loss on unfunded lending commitments (716 ) — — (716 ) Reserve for unfunded lending commitments, end of period 89,472 6,028 — 95,500 Total ACL, end of period $ 530,555 $ 3,415,052 $ 47,023 $ 3,992,630 Ending balance, individually evaluated for impairment (1) $ 94,120 $ 1,457,174 $ — $ 1,551,294 Ending balance, collectively evaluated for impairment 346,963 1,951,850 47,023 2,345,836 Financing receivables: Ending balance $ 40,381,758 $ 47,947,388 $ — $ 88,329,146 Ending balance, evaluated under the FVO or lower of cost or fair value — 1,393,476 — 1,393,476 Ending balance, individually evaluated for impairment (1) 444,031 5,779,998 — 6,224,029 Ending balance, collectively evaluated for impairment 39,937,727 40,773,914 — 80,711,641 (1) Consists of loans in TDR status. (2) Includes an immaterial reallocation between Commercial and Consumer for the period ending December 31, 2018. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Year Ended December 31, 2017 (in thousands) Commercial Consumer Unallocated Total ALLL, beginning of period $ 449,837 $ 3,317,604 $ 47,023 $ 3,814,464 Provision for loan and lease losses 99,606 2,670,950 — 2,770,556 Other (1) 356 5,283 — 5,639 Charge-offs (144,002 ) (4,891,383 ) — (5,035,385 ) Recoveries 37,999 2,401,614 — 2,439,613 Charge-offs, net of recoveries (106,003 ) (2,489,769 ) — (2,595,772 ) ALLL, end of period $ 443,796 $ 3,504,068 $ 47,023 $ 3,994,887 Reserve for unfunded lending commitments, beginning of period $ 116,866 $ 5,552 $ — $ 122,418 Release of unfunded lending commitments (10,336 ) (276 ) — (10,612 ) Loss on unfunded lending commitments (2,695 ) — — (2,695 ) Reserve for unfunded lending commitments, end of period 103,835 5,276 — 109,111 Total ACL, end of period $ 547,631 $ 3,509,344 $ 47,023 $ 4,103,998 Ending balance, individually evaluated for impairment (2) $ 102,326 $ 1,824,640 $ — $ 1,926,966 Ending balance, collectively evaluated for impairment 341,470 1,679,428 47,023 2,067,921 Financing receivables: Ending balance $ 39,315,888 $ 43,997,279 $ — $ 83,313,167 Ending balance, evaluated under the FVO or lower of cost or fair value 149,177 2,420,155 — 2,569,332 Ending balance, individually evaluated for impairment (2) 593,585 6,652,949 — 7,246,534 Ending balance, collectively evaluated for impairment 38,573,126 34,924,175 — 73,497,301 (1) Includes transfers in for the period ending September 30, 2017. (2) Consists of loans in TDR status. Year Ended December 31, 2016 (in thousands) Commercial Consumer Unallocated Total ALLL, beginning of period $ 456,812 $ 2,742,088 $ 47,245 $ 3,246,145 Provision for loan losses 152,112 2,852,730 (222 ) 3,004,620 Charge-offs (245,399 ) (4,720,135 ) — (4,965,534 ) Recoveries 86,312 2,442,921 — 2,529,233 Charge-offs, net of recoveries (159,087 ) (2,277,214 ) — (2,436,301 ) ALLL, end of period $ 449,837 $ 3,317,604 $ 47,023 $ 3,814,464 Reserve for unfunded lending commitments, beginning of period $ 143,461 $ 5,560 $ — $ 149,021 Provision for unfunded lending commitments (24,887 ) (8 ) — (24,895 ) Loss on unfunded lending commitments (1,708 ) — — (1,708 ) Reserve for unfunded lending commitments, end of period 116,866 5,552 — 122,418 Total ACL end of period $ 566,703 $ 3,323,156 $ 47,023 $ 3,936,882 Ending balance, individually evaluated for impairment (2) $ 98,596 $ 1,520,375 $ — $ 1,618,971 Ending balance, collectively evaluated for impairment 351,241 1,797,229 47,023 2,195,493 Financing receivables: Ending balance $ 44,561,193 $ 43,844,900 $ — $ 88,406,093 Ending balance, evaluated under the FVO or lower of cost or fair value (1) 121,065 2,482,595 — 2,603,660 Ending balance, individually evaluated for impairment (2) 666,386 5,795,366 — 6,461,752 Ending balance, collectively evaluated for impairment 43,773,742 35,566,939 — 79,340,681 The following table presents the activity in the allowance for loan losses for the RICs acquired in the Change in Control and those originated by SC subsequent to the Change in Control. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Year Ended December 31, 2018 (in thousands) Purchased Originated Total ALLL, beginning of period $ 384,167 $ 2,862,355 $ 3,246,522 (Release of) / Provision for loan and lease losses (53,551 ) 2,278,155 2,224,604 Charge-offs (319,069 ) (4,508,583 ) (4,827,652 ) Recoveries 182,195 2,360,649 2,542,844 Charge-offs, net of recoveries (136,874 ) (2,147,934 ) (2,284,808 ) ALLL, end of period $ 193,742 $ 2,992,576 $ 3,186,318 Year Ended December 31, 2017 (in thousands) Purchased Originated Total ALLL, beginning of period $ 559,092 $ 2,538,127 $ 3,097,219 Provision for loan and lease losses 181,698 2,332,160 2,513,858 Charge-offs (606,898 ) (4,128,249 ) (4,735,147 ) Recoveries 250,275 2,120,317 2,370,592 Charge-offs, net of recoveries (356,623 ) (2,007,932 ) (2,364,555 ) ALLL, end of period $ 384,167 $ 2,862,355 $ 3,246,522 Year ended December 31, 2016 (in thousands) Purchased Originated Total ALLL, beginning of period $ 590,807 $ 1,891,989 $ 2,482,796 Provision for loan and lease losses 309,664 2,459,588 2,769,252 Charge-offs (1,024,882 ) (3,539,153 ) (4,564,035 ) Recoveries 683,503 1,725,703 2,409,206 Charge-offs, net of recoveries (341,379 ) (1,813,450 ) (2,154,829 ) ALLL, end of period $ 559,092 $ 2,538,127 $ 3,097,219
Schedule of Non-accrual Loans	The recorded investment in non-accrual loans disaggregated by class of financing receivables and other non-performing assets is summarized as follows: (in thousands) December 31, 2018 December 31, 2017 Non-accrual loans: Commercial: CRE $ 88,500 $ 139,236 C&I 189,827 230,481 Multifamily 13,530 11,348 Other commercial 72,841 83,468 Total commercial loans 364,698 464,533 Consumer: Residential mortgages 216,815 265,436 Home equity loans and lines of credit 115,813 134,162 RICs and auto loans - originated 1,455,406 1,257,122 RICs - purchased 89,916 256,617 Personal unsecured loans 3,602 2,366 Other consumer 9,187 10,657 Total consumer loans 1,890,739 1,926,360 Total non-accrual loans 2,255,437 2,390,893 OREO 107,868 130,777 Repossessed vehicles 224,046 210,692 Foreclosed and other repossessed assets 1,844 2,190 Total OREO and other repossessed assets 333,758 343,659 Total non-performing assets $ 2,589,195 $ 2,734,552
Aging Analysis of Loan Portfolio	The age of recorded investments in past due loans and accruing loans 90 days or greater past due disaggregated by class of financing receivables is summarized as follows: As of: December 31, 2018 (in thousands) 30-89 90 Total Current Total (1) Recorded Investment Commercial: CRE $ 20,179 $ 49,317 $ 69,496 $ 8,634,985 $ 8,704,481 $ — C&I (1) 61,495 74,210 135,705 15,602,453 15,738,158 — Multifamily 1,078 4,574 5,652 8,303,463 8,309,115 — Other commercial 16,081 5,330 21,411 7,608,593 7,630,004 6 Consumer: Residential mortgages 186,222 171,265 357,487 9,741,496 10,098,983 — Home equity loans and lines of credit 58,507 79,860 138,367 5,327,303 5,465,670 — RICs and auto loans - originated 4,076,015 419,819 4,495,834 24,036,251 28,532,085 — RICs and auto loans - purchased 242,604 21,923 264,527 538,608 803,135 — Personal unsecured loans 93,675 102,463 196,138 2,404,327 2,600,465 98,973 Other consumer 16,261 13,782 30,043 417,007 447,050 — Total $ 4,772,117 $ 942,543 $ 5,714,660 $ 82,614,486 $ 88,329,146 $ 98,979 (1) Residential mortgages includes $214.5 million of LHFS at December 31, 2018 . (2) Personal unsecured loans includes $1.1 billion of LHFS at December 31, 2018 . As of December 31, 2017 (in thousands) 30-89 90 Total Current Total (1) Recorded Commercial: CRE $ 25,174 $ 100,524 $ 125,698 $ 9,153,527 $ 9,279,225 $ — C&I 49,584 75,924 125,508 14,461,981 14,587,489 — Multifamily 3,562 2,990 6,552 8,267,883 8,274,435 — Other commercial 34,021 3,359 37,380 7,137,359 7,174,739 — Consumer: Residential mortgages 217,558 210,777 428,335 8,628,600 9,056,935 — Home equity loans and lines of credit 50,919 91,975 142,894 5,764,839 5,907,733 — RICs and auto loans - originated 3,602,308 357,016 3,959,324 20,272,977 24,232,301 — RICs and auto loans - purchased 452,235 40,516 492,751 1,342,117 1,834,868 — Personal unsecured loans 85,394 105,054 190,448 2,157,319 2,347,767 96,461 Other consumer 24,879 14,220 39,099 578,576 617,675 — Total $ 4,545,634 $ 1,002,355 $ 5,547,989 $ 77,765,178 $ 83,313,167 $ 96,461 (1) C&I loans included $149.2 million of LHFS at December 31, 2017 . (2) Residential mortgages included $210.2 million of LHFS at December 31, 2017 . (3) RICs and auto loans included $1.1 billion of LHFS at December 31, 2017 . (4) Personal unsecured loans included $1.1 billion of LHFS at December 31, 2017 .
Schedule of Impaired Loans by Class	Impaired loans disaggregated by class of financing receivables are summarized as follows: December 31, 2018 (in thousands) Recorded Investment (1) UPB Related Average With no related allowance recorded: Commercial: CRE $ 79,056 $ 88,960 $ — $ 102,731 C&I 25,859 36,067 — 54,200 Multifamily 18,260 19,175 — 14,074 Other commercial 7,348 7,380 — 4,058 Consumer: Residential mortgages 144,899 201,905 — 126,110 Home equity loans and lines of credit 46,069 48,021 — 49,233 RICs and auto loans - originated 1 1 — 1 RICs and auto loans - purchased 7,061 9,071 — 11,627 Personal unsecured loans 4 4 — 42 Other consumer 3,591 3,591 — 6,574 With an allowance recorded: Commercial: CRE 58,861 66,645 6,449 78,271 C&I 180,178 197,937 66,329 178,474 Multifamily — — — 3,101 Other commercial 59,914 59,914 21,342 68,813 Consumer: Residential mortgages 253,965 289,447 29,156 288,029 Home equity loans and lines of credit 60,540 71,475 4,272 62,684 RICs and auto loans - originated 4,630,614 4,652,013 1,231,164 4,742,820 RICs and auto loans - purchased 614,071 694,000 184,545 890,274 Personal unsecured loans 16,182 16,446 6,875 16,330 Other consumer 10,060 13,275 1,162 10,826 Total: Commercial $ 429,476 $ 476,078 $ 94,120 $ 503,722 Consumer 5,787,057 5,999,249 1,457,174 6,204,550 Total $ 6,216,533 $ 6,475,327 $ 1,551,294 $ 6,708,272 (1) Recorded investment includes deferred loan fees, net of deferred origination costs and unamortized purchase premiums, net of discounts, as well as purchase accounting adjustments. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) The Company recognized interest income, not including the impact of purchase accounting adjustments, of $761.0 million for the year ended December 31, 2018 on approximately $5.0 billion of TDRs that were in performing status as of December 31, 2018 . December 31, 2017 (in thousands) Recorded Investment (1) UPB Related Average With no related allowance recorded: Commercial: CRE $ 126,406 $ 174,842 $ — $ 139,063 C&I 82,541 96,324 — 75,338 Multifamily 9,887 10,838 — 10,129 Other commercial 767 911 — 903 Consumer: Residential mortgages 107,320 128,458 — 141,195 Home equity loans and lines of credit 52,397 54,421 — 50,635 RICs and auto loans - purchased 16,192 20,783 — 25,283 Personal unsecured loans 80 80 — 345 Other consumer 9,557 13,055 — 14,446 With an allowance recorded: Commercial: CRE 97,680 117,730 18,523 118,492 C&I 176,769 200,382 59,696 196,674 Multifamily 6,201 6,201 313 4,566 Other commercial 77,712 77,772 23,794 42,465 Consumer: Residential mortgages 322,092 392,833 40,963 303,361 Home equity loans and lines of credit 64,827 77,435 4,770 57,345 RICs and auto loans - originated 4,855,026 4,914,656 1,422,834 4,063,171 RICs and auto loans - purchased 1,166,476 1,318,306 347,663 1,511,212 Personal unsecured loans 16,477 16,661 6,259 16,668 Other consumer 11,592 15,290 2,151 12,343 Total: Commercial $ 577,963 $ 685,000 $ 102,326 $ 587,630 Consumer 6,622,036 6,951,978 1,824,640 6,196,004 Total $ 7,199,999 $ 7,636,978 $ 1,926,966 $ 6,783,634 (1) Recorded investment includes deferred loan fees, net of deferred origination costs and unamortized purchase premiums, net of discounts, as well as purchase accounting adjustments.
Schedule of Loans by Credit Quality Indicators	Commercial loan credit quality indicators by class of financing receivables are summarized as follows: December 31, 2018 CRE C&I Multifamily Remaining Total (1) (in thousands) Rating: Pass $ 7,698,373 $ 14,518,566 $ 8,072,407 $ 7,466,419 $ 37,755,765 Special mention 628,097 772,704 204,262 67,313 1,672,376 Substandard 373,356 408,515 32,446 36,255 850,572 Doubtful 4,655 38,373 — 60,017 103,045 Total commercial loans $ 8,704,481 $ 15,738,158 $ 8,309,115 $ 7,630,004 $ 40,381,758 (1) Financing receivables include LHFS. December 31, 2017 CRE C&I Multifamily Remaining Total (1) (in thousands) Rating: Pass $ 8,281,626 $ 13,176,248 $ 8,123,727 $ 7,059,627 $ 36,641,228 Special mention 645,835 941,683 105,225 29,657 1,722,400 Substandard 317,510 398,325 45,483 21,747 783,065 Doubtful 34,254 71,233 — 63,708 169,195 Total commercial loans $ 9,279,225 $ 14,587,489 $ 8,274,435 $ 7,174,739 $ 39,315,888 (1) Financing receivables include LHFS. Consumer Lending Asset Quality Indicators-Credit Score Consumer financing receivables for which either an internal or external credit score is a core component of the allowance model are summarized by credit score as follows: Credit Score Range (2) December 31, 2018 December 31, 2017 (dollars in thousands) RICs and auto loans (3) Percent RICs and auto loans Percent No FICO ®(1) $ 3,136,449 10.7 % $ 3,429,190 13.6 % <600 14,884,385 50.7 % 13,445,032 53.9 % 600-639 5,185,412 17.7 % 4,332,278 17.4 % 640-679 4,758,394 16.2 % 3,759,621 15.1 % 680-719 289,270 1.0 % — — % 720-759 283,052 1.0 % — — % >=760 798,258 2.7 % — — % Total $ 29,335,220 100.0 % $ 24,966,121 100.0 % (1) Consists primarily of loans for which credit scores are not considered in the ALLL model. (2) Credit scores updated quarterly. (3) Reflects Chrysler portfolio originated for SBNA beginning in July 2018.
Schedule of Financing Receivable by LTV	110% Grand Total FICO Score (dollars in thousands) N/A (1) $ 133,436 $ 841 $ 197 $ — $ 5 $ 134,479 <600 1,130 209,536 64,202 14,948 5,988 295,804 600-639 398 166,384 48,543 7,932 2,780 226,037 640-679 919 305,642 112,937 10,311 6,887 436,696 680-719 869 527,374 215,824 17,231 13,482 774,780 720-759 1,139 732,467 292,516 20,812 14,677 1,061,611 >=760 2,280 1,844,830 614,221 46,993 27,939 2,536,263 Grand Total $ 140,171 $ 3,787,074 $ 1,348,440 $ 118,227 $ 71,758 $ 5,465,670 (1) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (2) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. Residential Mortgages (1)(3) December 31, 2017 N/A (2) LTV<=70% 70.01-80% 80.01-90% 90.01-100% 100.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (2) $ 174,426 $ 6,759 $ 1,214 $ — $ — $ — $ — $ 182,399 <600 21 220,738 55,108 35,617 23,834 2,505 6,020 343,843 600-639 45 155,920 42,420 35,009 34,331 2,696 6,259 276,680 640-679 37 320,248 94,601 90,582 86,004 3,011 2,641 597,124 680-719 98 554,058 236,408 136,916 145,545 3,955 10,317 1,087,297 720-759 92 952,532 480,900 177,700 179,648 4,760 8,600 1,804,232 >=760 588 3,019,418 1,066,103 262,490 185,579 8,418 12,594 4,555,190 Grand Total $ 175,307 $ 5,229,673 $ 1,976,754 $ 738,314 $ 654,941 $ 25,345 $ 46,431 $ 8,846,765 (1) Excludes LHFS. (2) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (3) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Home Equity Loans and Lines of Credit (2) December 31, 2017 N/A (1) LTV<=70% 70.01-90% 90.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (1) $ 154,690 $ 536 $ 238 $ — $ — $ 155,464 <600 8,064 190,657 64,554 16,634 22,954 302,863 600-639 6,276 158,461 61,250 9,236 9,102 244,325 640-679 6,745 297,003 127,347 19,465 14,058 464,618 680-719 8,875 500,234 258,284 24,675 20,261 812,329 720-759 8,587 724,831 332,508 30,526 19,119 1,115,571 >=760 17,499 1,917,373 768,905 73,573 35,213 2,812,563 Grand Total $ 210,736 $ 3,789,095 $ 1,613,086 $ 174,109 $ 120,707 $ 5,907,733 (1) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (2) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company." id="sjs-B10">Residential mortgage and home equity financing receivables by LTV and FICO range are summarized as follows: Residential Mortgages (1)(3) December 31, 2018 N/A (2) LTV<=70% 70.01-80% 80.01-90% 90.01-100% 100.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (2) $ 87,808 $ 4,465 $ — $ — $ 423 $ — $ — $ 92,696 <600 69 225,647 54,101 35,625 26,863 2,450 4,604 349,359 600-639 35 157,281 47,712 34,124 37,901 943 1,544 279,540 640-679 — 308,780 112,811 76,512 101,057 1,934 1,767 602,861 680-719 — 560,920 266,877 148,283 175,889 3,630 3,593 1,159,192 720-759 50 1,061,969 535,840 210,046 218,177 4,263 6,704 2,037,049 >=760 213 3,518,916 1,253,733 354,629 220,695 6,477 9,102 5,363,765 Grand Total $ 88,175 $ 5,837,978 $ 2,271,074 $ 859,219 $ 781,005 $ 19,697 $ 27,314 $ 9,884,462 (1) Excludes LHFS. (2) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (3) Allowance model considers LTV for financing receivables in first lien position for the Company and combined LTV ("CLTV") for financing receivables in second lien position for the Company. Home Equity Loans and Lines of Credit (2) December 31, 2018 N/A (1) LTV<=70% 70.01-90% 90.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (1) $ 133,436 $ 841 $ 197 $ — $ 5 $ 134,479 <600 1,130 209,536 64,202 14,948 5,988 295,804 600-639 398 166,384 48,543 7,932 2,780 226,037 640-679 919 305,642 112,937 10,311 6,887 436,696 680-719 869 527,374 215,824 17,231 13,482 774,780 720-759 1,139 732,467 292,516 20,812 14,677 1,061,611 >=760 2,280 1,844,830 614,221 46,993 27,939 2,536,263 Grand Total $ 140,171 $ 3,787,074 $ 1,348,440 $ 118,227 $ 71,758 $ 5,465,670 (1) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (2) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. Residential Mortgages (1)(3) December 31, 2017 N/A (2) LTV<=70% 70.01-80% 80.01-90% 90.01-100% 100.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (2) $ 174,426 $ 6,759 $ 1,214 $ — $ — $ — $ — $ 182,399 <600 21 220,738 55,108 35,617 23,834 2,505 6,020 343,843 600-639 45 155,920 42,420 35,009 34,331 2,696 6,259 276,680 640-679 37 320,248 94,601 90,582 86,004 3,011 2,641 597,124 680-719 98 554,058 236,408 136,916 145,545 3,955 10,317 1,087,297 720-759 92 952,532 480,900 177,700 179,648 4,760 8,600 1,804,232 >=760 588 3,019,418 1,066,103 262,490 185,579 8,418 12,594 4,555,190 Grand Total $ 175,307 $ 5,229,673 $ 1,976,754 $ 738,314 $ 654,941 $ 25,345 $ 46,431 $ 8,846,765 (1) Excludes LHFS. (2) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (3) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Home Equity Loans and Lines of Credit (2) December 31, 2017 N/A (1) LTV<=70% 70.01-90% 90.01-110% LTV>110% Grand Total FICO Score (dollars in thousands) N/A (1) $ 154,690 $ 536 $ 238 $ — $ — $ 155,464 <600 8,064 190,657 64,554 16,634 22,954 302,863 600-639 6,276 158,461 61,250 9,236 9,102 244,325 640-679 6,745 297,003 127,347 19,465 14,058 464,618 680-719 8,875 500,234 258,284 24,675 20,261 812,329 720-759 8,587 724,831 332,508 30,526 19,119 1,115,571 >=760 17,499 1,917,373 768,905 73,573 35,213 2,812,563 Grand Total $ 210,736 $ 3,789,095 $ 1,613,086 $ 174,109 $ 120,707 $ 5,907,733 (1) Residential mortgages and home equity loans and lines of credit in the "N/A" range for LTV or FICO score primarily represent the balance on loans serviced by others, in run-off portfolios or for which a current LTV or FICO score is unavailable. (2) Allowance model considers LTV for financing receivables in first lien position for the Company and CLTV for financing receivables in second lien position for the Company.
Summary of Performing and Non-performing TDRs	The following table summarizes the Company’s performing and non-performing TDRs at the dates indicated: (in thousands) December 31, 2018 December 31, 2017 Performing $ 5,014,224 $ 5,860,119 Non-performing 908,128 982,868 Total (1) $ 5,922,352 $ 6,842,987 (1) Excludes LHFS.
Schedule of Troubled Debt Restructurings	The following tables detail the activity of TDRs for the years ended December 31, 2018 , 2017 , and 2016 respectively: Year Ended December 31, 2018 Number of Pre-TDR Recorded (1) Term Extension Rate Reduction Other (4) Post-TDR Recorded Investment (2) (dollars in thousands) Commercial: CRE 99 $ 145,214 $ (2,867 ) $ 1,749 $ (3,943 ) $ 140,153 C&I 247 9,932 (33 ) — (384 ) 9,515 Consumer: Residential mortgages (3) 189 32,606 — — (836 ) 31,770 Home equity loans and lines of credit 159 10,629 18 36 (138 ) 10,545 RICs and auto loans - originated 128,103 2,176,299 10,907 — 399 2,187,605 RICs - purchased 4,305 28,596 (27 ) — (17 ) 28,552 Personal unsecured loans 363 4,650 — — (61 ) 4,589 Other consumer 11 308 — — (80 ) 228 Total 133,476 $ 2,408,234 $ 7,998 $ 1,785 $ (5,060 ) $ 2,412,957 (1) Pre-TDR modification outstanding recorded investment amount is the month-end balance prior to the month in which the modification occurred. (2) Post-TDR modification outstanding recorded investment amount is the month-end balance for the month in which the modification occurred. (3) The post-TDR modification outstanding recorded investment amounts for residential mortgages exclude interest reserves. (4) Other modifications may include modifications such as interest rate reductions, fee waivers, or capitalization of fees. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Year Ended December 31, 2017 Number of Pre-TDR Recorded (1) Term Extension Rate Reduction Other (4) Post-TDR Recorded Investment (2) (dollars in thousands) Commercial: CRE 75 $ 152,550 $ (13,944 ) $ — $ (13,896 ) $ 124,710 C&I 790 24,915 (11 ) — (42 ) 24,862 Consumer: Residential mortgages (3) 212 40,578 5 133 118 40,834 Home equity loans and lines of credit 70 5,554 — — 1,014 6,568 RICs and auto loans - originated 189,246 3,339,056 (2,699 ) — (290 ) 3,336,067 RICs - purchased 17,717 159,462 (1,679 ) — (44 ) 157,739 Personal unsecured loans 391 4,678 — — (130 ) 4,548 Other consumer 109 3,055 — — 24 3,079 Total 208,610 $ 3,729,848 $ (18,328 ) $ 133 $ (13,246 ) $ 3,698,407 (1) Pre-TDR modification outstanding recorded investment amount is the month-end balance prior to the month in which the modification occurred. (2) Post-TDR modification outstanding recorded investment amount is the month-end balance for the month in which the modification occurred. (3) The post-TDR modification outstanding recorded investment amounts for residential mortgages exclude interest reserves. (4) Other modifications may include modifications such as interest rate reductions, fee waivers, or capitalization of fees. Year Ended December 31, 2016 Number of Pre-TDR Recorded (1) Term Extension Other (4) Post-TDR Recorded Investment (2) (dollars in thousands) Commercial: CRE 92 $ 207,004 $ 567 $ (23,957 ) $ 183,614 C&I 1,416 47,003 (7 ) (149 ) 46,847 Consumer: Residential mortgages (3) 277 36,203 (53 ) 9,982 46,132 Home equity loans and lines of credit 161 10,360 — 416 10,776 RICs and auto loans - originated 155,114 2,878,648 (438 ) (292 ) 2,877,918 RICs - purchased 42,774 496,224 (2,353 ) (115 ) 493,756 Personal unsecured loans 390 5,070 — (201 ) 4,869 Other consumer 691 18,246 (38 ) (1,133 ) 17,075 Total 200,915 $ 3,698,758 $ (2,322 ) $ (15,449 ) $ 3,680,987
Schedule of Troubled Debt Restructurings Subsequently Defaulted	The following table details period-end recorded investment balances of TDRs that became TDRs during the past twelve-month period and have subsequently defaulted during the years ended December 31, 2018 , 2017 , and 2016 respectively. NOTE 4. LOANS AND ALLOWANCE FOR CREDIT LOSSES (continued) Year Ended December 31, 2018 2017 2016 Number of Recorded Investment (1) Number of Recorded Investment (1) Number of Recorded Investment (1) (dollars in thousands) Commercial CRE 7 $ 21,654 18 $ 27,286 — $ — C&I 155 20,920 205 7,741 264 16,996 Other commercial — — 2 22 — — Consumer: Residential mortgages 165 20,783 302 36,112 63 9,120 Home equity loans and lines of credit 43 2,609 6 257 15 890 RICs and auto loans 40,007 673,875 47,789 831,102 48,686 814,454 Personal Unsecured loans 194 1,743 320 3,250 — — Other consumer — — 35 394 215 3,117 Total 40,571 $ 741,584 48,677 $ 906,164 49,243 $ 844,577 (1) The recorded investment represents the period-end balance. Does not include Chapter 7 bankruptcy TDRs.

OPERATING LEASE ASSETS, NET (Ta

OPERATING LEASE ASSETS, NET (Tables)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Schedule of Operating Lease Assets, Net	Operating lease assets, net consisted of the following as of December 31, 2018 and December 31, 2017 : (in thousands) December 31, 2018 December 31, 2017 Leased vehicles $ 18,737,338 $ 14,751,568 Less: accumulated depreciation (3,518,025 ) (3,333,125 ) Depreciated net capitalized cost 15,219,313 11,418,443 Origination fees and other costs 66,967 27,246 Manufacturer subvention payments (1,307,424 ) (1,047,113 ) Leased vehicles, net 13,978,856 10,398,576 Commercial equipment vehicles and aircraft, gross 130,274 93,981 Less: accumulated depreciation (30,337 ) (18,249 ) Commercial equipment vehicles and aircraft, net 99,937 75,732 Total operating lease assets, net $ 14,078,793 $ 10,474,308
Schedule of Future Minimum Rental Payments Due to the Company Under Operating Leases	The following summarizes the future minimum rental payments due to the Company as lessor under operating leases as of December 31, 2018 (in thousands): 2019 $ 2,316,799 2020 1,652,894 2021 599,278 2022 34,250 2023 6,003 Thereafter 11,739 Total $ 4,620,963

PREMISES AND EQUIPMENT (Tables)

PREMISES AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Summary of Premises and Equipment	Depreciation is calculated utilizing the straight-line method. Estimated useful lives are as follows: Office buildings 10 to 50 years Leasehold improvements (1) 10 to 30 years Software (2) 3 to 7 years Furniture, fixtures and equipment 3 to 10 years Automobiles 5 years (1) Leasehold improvements are depreciated over the shorter of the useful lives of the assets or the remaining term of the leases. (2) The standard depreciable period for software is three years . However, for certain software implementation projects, a seven -year period is utilized. A summary of premises and equipment, less accumulated depreciation, follows: (in thousands) December 31, 2018 December 31, 2017 Land $ 87,531 $ 89,350 Office buildings 185,218 201,927 Furniture, fixtures, and equipment 427,245 434,591 Leasehold improvement 509,314 551,442 Computer software 990,429 1,002,260 Automobiles and other 1,475 1,146 Total premise and equipment 2,201,212 2,280,716 Less accumulated depreciation (1,395,272 ) (1,431,655 ) Total premises and equipment, net $ 805,940 $ 849,061

VIEs (Tables)

VIEs (Tables)	12 Months Ended
	Dec. 31, 2018
Variable Interest Entity and Securitizations [Abstract]
Schedule of Variable Interest Entities	The assets of consolidated VIEs, that are included in the Company's Consolidated Financial Statements , presented based upon the legal transfer of the underlying assets in order to reflect legal ownership, and that can be used only to settle obligations of the consolidated VIEs and the liabilities of those entities for which creditors (or beneficial interest holders) do not have recourse to the Company's general credit were as follows (1) : NOTE 7. VIEs (continued) (in thousands) December 31, 2018 December 31, 2017 Assets Restricted cash $ 1,582,158 $ 1,995,557 Loans (2)(3) 24,098,638 22,679,381 Operating lease assets, net 13,978,855 10,160,327 Various other assets 685,383 747,101 Total Assets $ 40,345,034 $ 35,582,366 Liabilities Notes payable (3) $ 31,949,839 $ 28,469,999 Various other liabilities 122,010 197,969 Total Liabilities $ 32,071,849 $ 28,667,968 (1) Certain amounts shown above are greater than the amounts shown in the corresponding line items in the accompanying Consolidated Balance Sheets due to intercompany eliminations between the VIEs and other entities consolidated by the Company. For example, for most of its securitizations, the Company retains one or more of the lowest tranches of bonds. Rather than showing investment in bonds as an asset and the associated debt as a liability, these amounts are eliminated in consolidation as required by GAAP. (2) Includes zero and $1.1 billion of RICs HFS at December 31, 2018 and December 31, 2017 , respectively. (3) Reflects the impacts of purchase accounting.
Summary of Cash Flows Received	A summary of the cash flows received from the Trusts for the years ended December 31, 2018 , 2017 and 2016 is as follows: Year Ended December 31, (in thousands) 2018 2017 2016 Receivables securitized (1) $ 2,905,922 $ 2,583,341 $ 904,108 Net proceeds from new securitizations $ 2,909,794 $ 2,588,227 $ 876,592 Cash received for servicing fees 43,859 35,682 47,804 Total cash received from Trusts $ 2,953,653 $ 2,623,909 $ 924,396 (1) Represents the UPB at the time of original securitization. A summary of the cash flows received from the consolidated securitization Trusts for the years ended December 31, 2018 , 2017 and 2016 is as follows: Year Ended December 31, (in thousands) 2018 2017 2016 Assets securitized $ 26,650,284 $ 18,442,793 $ 15,828,921 Net proceeds from new securitizations (1) $ 17,338,880 $ 14,126,211 $ 13,319,530 Net proceeds from sale of retained bonds 1,059,694 499,354 436,812 Cash received for servicing fees (2) 887,988 866,210 787,778 Net distributions from Trusts (2) 2,767,509 2,613,032 1,748,013 Total cash received from Trusts $ 22,054,071 $ 18,104,807 $ 16,292,133 (1) Includes additional advances on existing securitizations. (2) These amounts are not reflected in the accompanying Consolidated SCF because the cash flows are between the VIEs and other entities included in the consolidation.
Schedule of Off-balance Sheet Variable Interest Entities Portfolio	The portfolio was comprised as follows: (in thousands) December 31, 2018 December 31, 2017 Santander Private Auto Issuing Note ("SPAIN") trust $ 3,461,793 $ 2,024,016 Total serviced for related parties 3,461,793 2,024,016 Chrysler Capital securitizations 611,050 1,404,232 Total serviced for third parties 611,050 1,404,232 Total serviced for other portfolio $ 4,072,843 $ 3,428,248

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table presents the Company's goodwill by its reporting units at December 31, 2018 : (in thousands) Consumer and Business Banking Commercial Banking CIB SC Total Goodwill at December 31, 2018 $ 1,880,304 $ 1,412,995 $ 131,130 $ 1,019,960 $ 4,444,389
Schedule of Finite-Lived Intangible Assets	The following table details amounts related to the Company's intangible assets subject to amortization for the dates indicated. December 31, 2018 December 31, 2017 (in thousands) Net Carrying Amount Accumulated Amortization Net Carrying Amount Accumulated Amortization Intangibles subject to amortization: Dealer networks $ 387,196 $ (192,804 ) $ 426,411 $ (153,589 ) Chrysler relationship 65,000 (73,750 ) 80,000 (58,750 ) Trade name 14,700 (3,300 ) 15,900 (2,100 ) Other intangibles 8,297 (46,894 ) 13,442 (56,021 ) Total intangibles subject to amortization $ 475,193 $ (316,748 ) $ 535,753 $ (270,460 )
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The estimated aggregate amortization expense related to intangibles, excluding any impairment charges, for each of the five succeeding calendar years ending December 31 is: Year Calendar Year Amount (in thousands) 2019 $ 55,717 2020 58,929 2021 42,903 2022 39,901 2023 28,649 Thereafter 249,094

OTHER ASSETS (Tables)

OTHER ASSETS (Tables)	12 Months Ended
	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Assets	The following is a detail of items that comprised other assets at December 31, 2018 and 2017 : (in thousands) December 31, 2018 December 31, 2017 Deferred tax assets $ 625,087 $ 771,652 Accrued interest receivable 566,602 577,585 Derivative assets at fair value 511,916 448,977 Other repossessed assets 225,890 212,882 Equity method investments 204,687 194,434 MSRs 152,121 149,197 OREO 107,868 130,777 Miscellaneous assets, receivables and prepaid expenses 1,259,165 1,160,901 Total other assets $ 3,653,336 $ 3,646,405

DEPOSITS AND OTHER CUSTOMER A_2

DEPOSITS AND OTHER CUSTOMER ACCOUNTS (Tables)	12 Months Ended
	Dec. 31, 2018
Deposits [Abstract]
Summary of Deposits and Other Customer Accounts	Deposits and other customer accounts are summarized as follows: December 31, 2018 December 31, 2017 (dollars in thousands) Balance Percent of total deposits Balance Percent of total deposits Interest-bearing demand deposits $ 8,827,704 14.4 % $ 8,784,597 14.4 % Non-interest-bearing demand deposits 14,420,450 23.4 % 15,402,235 25.3 % Savings 5,875,787 9.6 % 5,903,897 9.7 % Customer repurchase accounts 654,843 1.1 % 802,119 1.4 % Money market 24,263,929 39.4 % 24,530,661 40.3 % CDs 7,468,667 12.1 % 5,407,594 8.9 % Total Deposits (1) $ 61,511,380 100.0 % $ 60,831,103 100.0 % (1) Includes foreign deposits, as defined by the FRB, of $8.4 billion and $9.1 billion at December 31, 2018 and December 31, 2017 , respectively.
Summary of Interest Expense on Deposits [Table Text Block]	Interest expense on deposits and other customer accounts is summarized as follows: YEAR ENDED DECEMBER 31, (in thousands) 2018 2017 2016 Interest-bearing demand deposits $ 41,481 $ 21,628 $ 40,262 Savings 12,325 11,004 12,723 Customer repurchase accounts 1,761 1,932 1,750 Money market 245,794 132,993 126,418 CDs 87,767 73,487 95,869 Total Deposits $ 389,128 $ 241,044 $ 277,022
Schedule of Maturity of Certificates of Deposit Equal One Hundred Thousand Dollars or More [Table Text Block]	The following table sets forth the maturity of the Company's CDs of $100,000 or more at December 31, 2018 as scheduled to mature contractually: (in thousands) Three months or less $ 731,665 Over three through six months 513,196 Over six through twelve months 1,349,221 Over twelve months 1,191,485 Total $ 3,785,568
Schedule of Maturity of All Certificates of Deposit [Table Text Block]	The following table sets forth the maturity of all the Company's CDs at December 31, 2018 as scheduled to mature contractually: (in thousands) 2019 $ 5,265,491 2020 956,587 2021 932,662 2022 247,684 2023 60,209 Thereafter 6,034 Total $ 7,468,667

BORROWINGS (Tables)

BORROWINGS (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Instrument [Line Items]
Schedule of Borrowings and Other Debt Obligation	The following table presents information regarding the Bank's borrowings and other debt obligations at the dates indicated: December 31, 2018 December 31, 2017 (dollars in thousands) Balance Effective Rate Balance Effective Rate 8.750% subordinated debentures, due May 2018 $ — — % $ 192,019 8.92 % Subordinated term loan, due February 2019 99,402 8.20 % 111,883 7.12 % FHLB advances, maturing through September 2021 4,850,000 2.74 % 1,950,000 1.53 % Securities sold under repurchase agreements — — % 150,000 1.56 % REIT preferred, callable May 2020 145,590 13.22 % 144,167 13.35 % Subordinated term loan, due August 2022 26,770 9.95 % 27,911 8.89 % Total Bank borrowings and other debt obligations $ 5,121,762 3.18 % $ 2,575,980 3.07 % The following table presents information regarding the Parent Company and its subsidiaries' borrowings and other debt obligations at the dates indicated: December 31, 2018 December 31, 2017 (dollars in thousands) Balance Effective Rate Balance Effective Rate Parent Company 3.45% senior notes, due August 2018 $ — — % $ 244,317 3.62 % 2.70% senior notes, due May 2019 178,628 2.82 % 998,349 2.82 % 2.65% senior notes, due April 2020 997,848 2.82 % 996,238 2.82 % 4.45% senior notes, due December 2021 995,540 4.61 % — — % 3.70% senior notes, due March 2022 1,440,063 3.74 % 1,440,044 3.74 % 3.40% senior notes, due January 2023 994,831 3.54 % 993,662 3.54 % 4.50% senior notes, due July 2025 1,095,966 4.56 % 1,095,449 4.56 % 4.40% senior notes, due July 2027 1,049,799 4.40 % 1,049,787 4.40 % Junior subordinated debentures - Sovereign Capital Trust IX, due July 2036 — — % 149,462 3.14 % Common securities - Sovereign Capital Trust IX — — % 4,640 3.14 % Senior notes, due July 2019 (1) 388,717 3.22 % 388,565 2.31 % Senior notes, due September 2019 (1) 370,936 3.18 % 370,754 2.34 % Senior notes, due January 2020 (1) 302,619 3.22 % 302,494 2.40 % Senior notes, due September 2020 (2) 108,888 3.17 % 115,804 3.32 % Senior notes, due June 2022 (1) 427,850 3.38 % — — % Subsidiaries 2.00% subordinated debt, maturing through 2042 40,703 2.00 % 40,842 2.00 % Short-term borrowing, due within one year, maturing January 2019 44,000 2.40 % 24,000 1.38 % Total due to others overnight, due within one year, due July 2018 — — % 10,000 1.38 % Short-term borrowing, due within one year, maturing January 2019 15,900 0.38 % 37,546 0.25 % Short-term borrowings, due within one year, maturing through 2018 — — % 7,123 0.83 % Total Parent Company and subsidiaries' borrowings and other debt obligations $ 8,452,288 3.76 % $ 8,269,076 3.45 % (1) These notes bear interest at a rate equal to the three-month London Interbank Offered Rate (“LIBOR") plus 100 basis points per annum. (2) This note will bear interest at a rate equal to the three-month LIBOR plus 105 basis points per annum.
Schedule of Maturities of Long-term Debt	The following table sets forth the maturities of the Company's consolidated borrowings and debt obligations at December 31, 2018 : (in thousands) 2019 $ 4,988,996 2020 9,427,828 2021 7,009,986 2022 9,282,303 2023 5,661,986 Thereafter 8,582,685 Total $ 44,953,784
SC
Debt Instrument [Line Items]
Schedule of Borrowings and Other Debt Obligation	The following tables present information regarding SC's credit facilities as of December 31, 2018 and December 31, 2017 , respectively: December 31, 2018 (dollars in thousands) Balance Committed Amount Effective Rate Assets Pledged Restricted Cash Pledged Warehouse line, maturing on various dates (1) $ 314,845 $ 1,250,000 4.83 % $ 458,390 $ — Warehouse line, due November 2020 317,020 500,000 3.53 % 359,214 525 Warehouse line, due August 2020 (2) 2,154,243 4,400,000 3.79 % 2,859,113 4,831 Warehouse line, due October 2020 242,377 2,050,000 5.94 % 345,599 120 Warehouse line, due August 2019 53,584 500,000 8.34 % 78,790 — Warehouse line, due November 2020 1,000,000 1,000,000 3.32 % 1,430,524 6 Warehouse line, due October 2019 97,200 350,000 4.35 % 108,418 328 Repurchase facility, due April 2019 (3) 167,118 167,118 3.84 % 235,540 — Repurchase facility, due March 2019 (3) 131,827 131,827 3.54 % 166,308 — Total SC revolving credit facilities $ 4,478,214 $ 10,348,945 3.92 % $ 6,041,896 $ 5,810 (1) As of December 31, 2018 , one-half of the outstanding balance on this facility matures in March 2019 and the remaining balance matures in March 2020. (2) This line is held exclusively for financing of Chrysler Capital leases. (3) These repurchase facilities are collateralized by securitization notes payable retained by SC. These facilities have rolling maturities of up to one year . As the borrower, SC is exposed to liquidity risk due to changes in the market value of retrained securities pledged. In some instances, SC places or receives cash collateral with counterparties under collateral arrangements associated with SC's repurchase agreements. December 31, 2017 (dollars in thousands) Balance Committed Amount Effective Assets Pledged Restricted Cash Pledged Warehouse line, maturing on various dates $ 339,145 $ 1,250,000 2.53 % $ 461,353 $ 12,645 Warehouse line, due November 2019 435,220 500,000 1.92 % 521,365 16,866 Warehouse line, due August 2019 2,044,843 3,900,000 2.96 % 2,929,890 53,639 Warehouse line, due October 2019 226,577 1,800,000 4.95 % 311,336 6,772 Warehouse line, due October 2019 81,865 400,000 4.09 % 114,021 3,057 Warehouse line, due January 2018 336,484 500,000 2.87 % 473,208 — Warehouse line, due November 2019 403,999 1,000,000 2.66 % 546,782 14,729 Warehouse line, due October 2018 235,700 300,000 2.84 % 289,634 10,474 Warehouse line, due December 2018 — 300,000 1.49 % — — Repurchase facility, maturing on various dates 325,775 325,775 3.24 % 474,188 13,842 Repurchase facility, due April 2018 202,311 202,311 2.67 % 264,120 — Repurchase facility, due March 2018 147,500 147,500 3.91 % 222,108 — Repurchase facility, due March 2018 68,897 68,897 3.04 % 95,762 — Line of credit with related party, due December 2018 — 1,000,000 3.09 % — — Line of credit with related party, due December 2018 750,000 750,000 1.33 % — — Total SC revolving credit facilities $ 5,598,316 $ 12,444,483 2.73 % $ 6,703,767 $ 132,024 The following tables present information regarding SC's secured structured financings as of December 31, 2018 and December 31, 2017 , respectively: December 31, 2018 (dollars in thousands) Balance Initial Note Amounts Issued (3) Initial Weighted Average Interest Rate Range Collateral (2) Restricted Cash SC public securitizations, maturing on various dates between April 2021 and April 2026 (1) $ 19,225,169 $ 41,380,952 1.16% - 3.53% $ 24,912,904 $ 1,541,714 SC privately issued amortizing notes, maturing on various dates between June 2019 and September 2024 7,676,351 11,305,368 0.88% - 3.17% 10,383,266 35,201 Total SC secured structured financings $ 26,901,520 $ 52,686,320 .88% - 3.53% $ 35,296,170 $ 1,576,915 (1) Securitizations executed under Rule 144A of the Securities Act of 1933, as amended (the "Securities Act"), are included within this balance. (2) Secured structured financings may be collateralized by SC's collateral overages of other issuances. (3) Excludes initial note amounts issued balance for any securitizations deals that were paid off during the year or any new top ups for the year December 31, 2017 (dollars in thousands) Balance Initial Note Amounts Issued Initial Weighted Average Interest Rate Range Collateral Restricted Cash SC public securitizations, maturing on various dates between January 2019 and September 2024 (1)(2) $ 14,995,304 $ 36,800,642 0.89% - 2.80% $ 19,873,621 $ 1,470,459 SC privately issued amortizing notes, maturing on various dates between March 2018 and September 2028 (1) 7,564,637 12,278,282 0.88% - 4.09% 9,232,658 377,300 Total SC secured structured financings $ 22,559,941 $ 49,078,924 0.88% - 4.09% $ 29,106,279 $ 1,847,759 (1) SC has entered into various securitization transactions involving its retail automobile installment loans and leases. These transactions are accounted for as secured financings and therefore both the securitized RICs and the related securitization debt issued by SPEs remain on the Consolidated Balance Sheets . The maturity of this debt is based on the timing of repayments from the securitized assets. (2) Securitizations executed under Rule 144A of the Securities Act are included within this balance.

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS) (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income / (Loss)	The following table presents the components of accumulated other comprehensive income/(loss), net of related tax, for the years ended December 31, 2018 , 2017 , and 2016 respectively. Total Other Total Accumulated Year Ended December 31, 2018 December 31, 2017 December 31, 2018 (in thousands) Pretax Tax Net Activity Beginning Net Ending Change in accumulated OCI on cash flow hedge derivative financial instruments $ (6,225 ) $ (848 ) $ (7,073 ) Reclassification adjustment for net losses on cash flow hedge derivative financial instruments (1) 4,781 (1,504 ) 3,277 Net unrealized (losses) on cash flow hedge derivative financial instruments (1,444 ) (2,352 ) (3,796 ) $ (6,388 ) $ (3,796 ) $ — Cumulative impact of adoption of new ASU (4) (9,629 ) Net unrealized (losses) on cash flow hedge derivative financial instruments upon adoption (13,425 ) (19,813 ) Change in unrealized (losses) on investments in debt securities AFS and HTM (84,316 ) (3,577 ) (87,893 ) Reclassification adjustment for net losses included in net income/(expense) on non-OTTI securities (2) 6,717 285 7,002 Net unrealized (losses) on investments in debt securities AFS and HTM (77,599 ) (3,292 ) (80,891 ) (140,498 ) (80,891 ) Cumulative impact of adoption of new ASU (4) (24,378 ) Net unrealized (losses) on investments in debt securities AFS and HTM - upon adoption (105,269 ) (245,767 ) Pension and post-retirement actuarial (loss) (3) 7,527 (6,967 ) 560 (51,545 ) 560 Cumulative impact of adoption of new ASU (4) (5,087 ) Pension and post-retirement actuarial gain upon adoption (4,527 ) (56,072 ) As of December 31, 2018 $ (71,516 ) $ (12,611 ) $ (84,127 ) $ (198,431 ) $ (123,221 ) $ (321,652 ) (1) Net gains/(losses) reclassified into Interest on borrowings and other debt obligations in the Consolidated Statements of Operations for settlements of interest rate swap contracts designated as cash flow hedges. (2) Net (gains)/losses reclassified into Net gain on sale of investment securities sales in the Consolidated Statements of Operations for the sale of AFS securities. (3) Included in the computation of net periodic pension costs. (4) Includes impact of other comprehensive income reclassified to Retained earnings as a result of the adoption of ASU 2018-02. Refer to Note 1 for further discussion. NOTE 12. ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS) (continued) Total Other Total Accumulated Year Ended December 31, 2017 December 31, 2016 December 31, 2017 (in thousands) Pretax Tax Net Activity Beginning Net Ending Change in accumulated OCI on cash flow hedge derivative financial instruments $ 10,620 $ 7,508 $ 18,128 Reclassification adjustment for net (gains) on cash flow hedge derivative financial instruments (1) (15,005 ) (2,786 ) (17,791 ) Net unrealized (losses) on cash flow hedge derivative financial instruments (4,385 ) 4,722 337 $ (6,725 ) $ 337 $ (6,388 ) Change in unrealized (losses) on investment securities AFS (17,972 ) 6,694 (11,278 ) Reclassification adjustment for net losses included in net income/(expense) on non-OTTI securities (2) 2,444 (910 ) 1,534 Net unrealized (losses) on investment securities AFS (15,528 ) 5,784 (9,744 ) (130,754 ) (9,744 ) (140,498 ) Pension and post-retirement actuarial gain (3) 4,954 (770 ) 4,184 (55,729 ) 4,184 (51,545 ) As of December 31, 2017 $ (14,959 ) $ 9,736 $ (5,223 ) $ (193,208 ) $ (5,223 ) $ (198,431 ) (1) Net gains/(losses) reclassified into Interest on borrowings and other debt obligations in the Consolidated Statements of Operations for settlements of interest rate swap contracts designated as cash flow hedges. (2) Net (gains)/losses reclassified into Net gain on sale of investment securities sales in the Consolidated Statements of Operations for the sale of AFS securities. (3) Included in the computation of net periodic pension costs. Total Other Total Accumulated For the Year Ended December 31, 2016 December 31, 2015 December 31, 2016 (in thousands) Pretax Tax Net Activity Beginning Net Ending Change in accumulated OCI on cash flow hedge derivative financial instruments $ 1,203 $ (130 ) $ 1,073 Reclassification adjustment for net losses on cash flow hedge derivative financial instruments (1) 9,848 (1,065 ) 8,783 Net unrealized gains on cash flow hedge derivative financial instruments 11,051 (1,195 ) 9,856 $ (16,581 ) $ 9,856 $ (6,725 ) Change in unrealized gains on investment securities AFS 4,040 (1,459 ) 2,581 Reclassification adjustment for net (gains) included in net income/(expense) on non-OTTI securities (2) (57,771 ) 20,350 (37,421 ) Reclassification adjustment for net losses included in net income/(expense) on OTTI securities (3) 44 (16 ) 28 Reclassification adjustment for net (gains) included in net income (57,727 ) 20,334 (37,393 ) Net unrealized (losses) on investment securities AFS (53,687 ) 18,875 (34,812 ) (95,942 ) (34,812 ) (130,754 ) Pension and post-retirement actuarial gain (4) 3,768 (1,490 ) 2,278 (58,007 ) 2,278 (55,729 ) As of December 31, 2016 $ (38,868 ) $ 16,190 $ (22,678 ) $ (170,530 ) $ (22,678 ) $ (193,208 ) (1) Net gains/(losses) reclassified into Interest on borrowings and other debt obligations in the Consolidated Statements of Operations for settlements of interest rate swap contracts designated as cash flow hedges. (2) Net (gains)/losses reclassified into Net gain on sale of investment securities sales in the Consolidated Statements of Operations for the sale of AFS securities. (3) Unrealized losses/(gains) previously recognized in accumulated OCI on securities for which OTTI was recognized during the period. See further discussion in Note 3 to the Consolidated Financial Statements . (4) Included in the computation of net periodic pension costs.

STOCKHOLDER'S EQUITY (Tables)

STOCKHOLDER'S EQUITY (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Schedule of Transactions with Santander	Additional transactions with Santander that are disclosed within the Consolidated Statements of Stockholder's Equity that are shown net are disclosed within the table below: Impact to common stock and paid in capital (in thousands) Deferred tax asset on purchased assets $ 3,156 Adjustment to book value of assets purchased on January 1 277 February 2018 contribution 5,741 October 2018 contribution 45,846 December 2018 contribution 33,448 2018 Net contribution from shareholder $ 88,468 March 2017 cash contribution $ 9,000 December 2017 contribution (1) 15,317 December 2017 return of capital (1) (12,570 ) 2017 net contribution from shareholder $ 11,747 (1) - The December contribution was utilized to purchase certain assets and liabilities from other Santander subsidiaries. The fair value of the net assets acquired exceeded their carrying value by $12.6 million , which is recorded as a return of capital. Refer to Note 21 for additional details.

DERIVATIVES (Tables)

DERIVATIVES (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative [Line Items]
Impact of Derivative Activities in the Condensed Consolidated Statement of Operations	The following Consolidated Statement of Operations line items were impacted by the Company’s derivative activities for the years ended December 31, 2018 , 2017 and 2016 : (in thousands) Year Ended December 31, Derivative Activity (1) Line Item 2018 2017 2016 Fair value hedges: Cross-currency swaps Net Interest Income $ — $ — $ 174 Interest rate swaps Net Interest Income — 2,397 (4,891 ) Cash flow hedges: Pay fixed-receive variable interest rate swaps Interest expense on borrowings 33,881 (10,152 ) (6,397 ) Pay variable receive-fixed interest rate swap Interest income on loans (24,346 ) 9,104 2,353 Other derivative activities: Forward commitments to sell loans Miscellaneous income, net (4,362 ) (9,033 ) 8,034 Interest rate lock commitments Miscellaneous income, net 572 (211 ) (224 ) Mortgage servicing Miscellaneous income, net (7,560 ) 2,075 1,552 Customer-related derivatives Miscellaneous income, net 34,987 16,703 14,861 Foreign exchange Miscellaneous income, net 2,259 6,520 5,189 Interest rate swaps, caps, and options Miscellaneous income, net 11,901 10,897 4,450 Interest expense — 6,060 51,862 Total return settlement Other administrative expenses — — (4,365 ) Other Miscellaneous income, net (4,030 ) 1,747 3,495 (1) Gains are disclosed as positive numbers while losses are shown as a negative number regardless of the line item being affected.
Offsetting of Financial Assets	Information about financial assets and liabilities that are eligible for offset on the Consolidated Balance Sheets as of December 31, 2018 and December 31, 2017 , respectively, is presented in the following tables: Offsetting of Financial Assets Gross Amounts Not Offset in the Consolidated Balance Sheet (in thousands) Gross Amounts of Recognized Assets Gross Amounts Offset in the Condensed Consolidated Balance Sheet Net Amounts of Assets Presented in the Condensed Consolidated Balance Sheet Financial Instruments Cash Collateral Received Net Amount December 31, 2018 Cash flow hedges $ 54,986 $ — $ 54,986 $ — $ 22,451 $ 32,535 Other derivative activities (1) 460,822 6,570 454,252 1,066 116,516 336,670 Total derivatives subject to a master netting arrangement or similar arrangement 515,808 6,570 509,238 1,066 138,967 369,205 Total derivatives not subject to a master netting arrangement or similar arrangement (2) 2,677 — 2,677 — — 2,677 Total Derivative Assets $ 518,485 $ 6,570 $ 511,915 $ 1,066 $ 138,967 $ 371,882 December 31, 2017 Cash flow hedges $ 49,442 $ — $ 49,442 $ — $ 3,076 $ 46,366 Other derivative activities (1) 411,697 6,731 404,966 2,021 77,975 324,970 Total derivatives subject to a master netting arrangement or similar arrangement 461,139 6,731 454,408 2,021 81,051 371,336 Total derivatives not subject to a master netting arrangement or similar arrangement (2) 2,105 — 2,105 — — 2,105 Total Derivative Assets $ 463,244 $ 6,731 $ 456,513 $ 2,021 $ 81,051 $ 373,441 (1) Includes customer-related and other derivatives. (2) Includes mortgage banking derivatives.
Offsetting of Financial Liabilities	Offsetting of Financial Liabilities Gross Amounts Not Offset in the Consolidated Balance Sheet (in thousands) Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Condensed Consolidated Balance Sheet Net Amounts of Liabilities Presented in the Condensed Consolidated Balance Sheet Financial Instruments Cash Collateral Pledged Net Amount December 31, 2018 Cash flow hedges $ 100,272 $ — $ 100,272 $ — $ 5,612 $ 94,660 Other derivative activities (1) 392,338 13,422 378,916 — 316,285 62,631 Total derivatives subject to a master netting arrangement or similar arrangement 492,610 13,422 479,188 — 321,897 157,291 Total derivatives not subject to a master netting arrangement or similar arrangement (2) 4,821 — 4,821 — 3,827 994 Total Derivative Liabilities $ 497,431 $ 13,422 $ 484,009 $ — $ 325,724 $ 158,285 December 31, 2017 Cash flow hedges $ 84,911 $ — $ 84,911 $ — $ 622 $ 84,289 Other derivative activities (1) 342,752 16,236 326,516 — 165,716 160,800 Total derivatives subject to a master netting arrangement or similar arrangement 427,663 16,236 411,427 — 166,338 245,089 Total derivatives not subject to a master netting arrangement or similar arrangement (2) 148 — 148 — — 148 Total Derivative Liabilities $ 427,811 $ 16,236 $ 411,575 $ — $ 166,338 $ 245,237 (1) Includes customer-related and other derivatives. (2) Includes mortgage banking derivatives.
Designated as hedging instrument
Derivative [Line Items]
Schedule of Derivative Instruments	Derivatives designated as accounting hedges at December 31, 2018 and December 31, 2017 included: (dollars in thousands) Notional Amount Asset Liability Weighted Average Receive Rate Weighted Average Pay Rate Weighted Average Life (Years) December 31, 2018 Cash flow hedges: Pay fixed — receive variable interest rate swaps $ 4,176,105 $ 44,054 $ 10,503 2.67 % 1.74 % 2.07 Pay variable - receive fixed interest rate swaps 4,000,000 — 89,769 1.41 % 2.40 % 2.02 Interest rate floor 2,000,000 10,932 — 0.04 % — % 1.91 Total $ 10,176,105 $ 54,986 $ 100,272 1.66 % 1.66 % 2.02 December 31, 2017 Cash flow hedges: Pay fixed — receive variable interest rate swaps $ 5,183,511 $ 46,422 $ 4,458 0.05 % 0.14 % 2.12 Pay variable - receive fixed interest rate swaps 4,000,000 — 80,453 1.41 % 1.42 % 3.02 Interest rate floor 1,000,000 3,020 — — % — % 2.64 Total $ 10,183,511 $ 49,442 $ 84,911 0.58 % 0.63 % 2.53
Not designated as hedging instrument
Derivative [Line Items]
Schedule of Other Derivative Activities	Other derivative activities at December 31, 2018 and December 31, 2017 included: Notional Asset derivatives Fair value Liability derivatives Fair value (in thousands) December 31, 2018 December 31, 2017 December 31, 2018 December 31, 2017 December 31, 2018 December 31, 2017 Mortgage banking derivatives: Forward commitments to sell loans $ 329,189 $ 311,852 $ 4 $ 3 $ 4,821 $ 459 Interest rate lock commitments 133,680 126,194 2,677 2,105 — — Mortgage servicing 455,000 330,000 1,575 193 8,953 2,092 Total mortgage banking risk management 917,869 768,046 4,256 2,301 13,774 2,551 Customer-related derivatives: Swaps receive fixed 11,335,998 9,328,079 92,542 72,912 120,185 70,348 Swaps pay fixed 11,825,804 9,576,893 163,673 110,109 72,662 51,380 Other 2,162,302 1,834,962 11,151 19,971 14,294 18,308 Total customer-related derivatives 25,324,104 20,739,934 267,366 202,992 207,141 140,036 Other derivative activities: Foreign exchange contracts 3,635,119 2,764,999 47,330 24,932 37,466 25,521 Interest rate swap agreements 2,281,379 1,749,349 11,553 9,596 3,264 1,631 Interest rate cap agreements 7,758,710 10,932,707 128,467 135,942 — 32,109 Options for interest rate cap agreements 7,741,765 10,906,081 — 32,165 128,377 135,824 Other 1,038,558 824,786 4,527 5,874 7,137 5,228 Total $ 48,697,504 $ 48,685,902 $ 463,499 $ 413,802 $ 397,159 $ 342,900

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The provision for income taxes in the Consolidated Statement of Operations is comprised of the following components: Year Ended December 31, (in thousands) 2018 2017 2016 Current: Foreign $ 13,183 $ 7,288 $ 30,983 Federal (68,160 ) 24,335 71,429 State 64,002 7,951 (2,646 ) Total current 9,025 39,574 99,766 Deferred: Foreign 16,882 (15,065 ) (36,039 ) Federal 360,780 (193,837 ) 143,494 State 39,213 12,288 106,494 Total deferred 416,875 (196,614 ) 213,949 Total income tax provision/(benefit) $ 425,900 $ (157,040 ) $ 313,715
Schedule of Effective Income Tax Rate Reconciliation	The following is a reconciliation of the U.S. federal statutory rate of 21.0% for the year ended December 31, 2018 and 35% for the years ended December 31, 2017 and 2016 to the Company's effective tax rate for each of the years indicated: Year Ended December 31, 2018 2017 2016 Federal income tax at statutory rate 21.0 % 35.0 % 35.0 % Increase/(decrease) in taxes resulting from: Valuation allowance 4.6 % 0.9 % (5.0 )% Tax-exempt income (0.8 )% (1.9 )% (1.6 )% Section 162(m) limitation 0.2 % — % — % Non-deductible FDIC insurance premiums 0.8 % — % — % BOLI (0.9 )% (2.8 )% (2.1 )% State income taxes, net of federal tax benefit 5.9 % 2.6 % 5.7 % General business tax credits (1.7 )% (2.1 )% (2.1 )% Electric vehicle credits (0.7 )% (3.0 )% (2.7 )% Basis in SC 3.0 % 3.4 % 3.1 % Uncertain tax position reserve (0.3 )% (0.4 )% 3.3 % Tax reform — % (53.3 )% — % Other (1.0 )% 2.0 % (0.7 )% Effective tax rate 30.1 % (19.6 )% 32.9 %
Schedule of Deferred Tax Assets and Liabilities	The tax effects of temporary differences that give rise to the deferred tax assets and deferred tax liabilities are presented below: At December 31, (in thousands) 2018 2017 Deferred tax assets: ALLL $ 208,507 $ 214,873 Internal Revenue Code ("IRC") Section 475 mark to market adjustment 296,145 520,256 Unrealized loss on available-for-sale securities 76,915 57,325 Unrealized loss on derivatives 11,340 13,217 Held to maturity 5,901 — Capital loss carryforwards 22,661 28,873 Net operating loss carryforwards 1,836,767 921,498 Non-solicitation payments 87 237 Employee benefits 98,735 112,206 General business credit & other tax credit carryforwards 670,502 627,969 Broker commissions paid on originated mortgage loans 11,073 11,179 Minimum tax credit carryforwards 87,822 164,661 Recourse reserves 5,346 5,143 Deferred interest expense 66,146 55,552 Depreciation and amortization 111,438 — Other 153,370 120,450 Total gross deferred tax assets 3,662,755 2,853,439 Valuation allowance (300,584 ) (235,920 ) Total deferred tax assets 3,362,171 2,617,519 Deferred tax liabilities: Purchase accounting adjustments 81,151 82,217 Deferred income 38,448 20,562 Originated MSR 42,625 38,775 Change in Control deferred gain 375,573 345,014 Leasing transactions 3,270,042 2,076,602 Depreciation and amortization — 122,417 Other 141,782 125,570 Total gross deferred tax liabilities 3,949,621 2,811,157 Net deferred tax (liability) $ (587,450 ) $ (193,638 )
Summary of Operating Loss Carryforwards	At December 31, 2018 , the Company has recorded the following: (in thousands) Gross Deferred Tax Balance Valuation Allowance Final Expiration Year (1) Net operating loss carryforwards $ 1,712,321 $ 131,332 2037 State net operating loss carryforwards 124,446 5,841 2038 General business credit carryforward 670,502 78,427 2038 Minimum tax credit carryforward 87,822 4,723 N/A Capital loss carryforward 22,661 22,661 2023 Deferred tax timing differences — 57,600 N/A Total $ 2,617,752 $ 300,584 (1) These will expire in varying amounts through the final expiration year.
Summary of Tax Credit Carryforwards	At December 31, 2018 , the Company has recorded the following: (in thousands) Gross Deferred Tax Balance Valuation Allowance Final Expiration Year (1) Net operating loss carryforwards $ 1,712,321 $ 131,332 2037 State net operating loss carryforwards 124,446 5,841 2038 General business credit carryforward 670,502 78,427 2038 Minimum tax credit carryforward 87,822 4,723 N/A Capital loss carryforward 22,661 22,661 2023 Deferred tax timing differences — 57,600 N/A Total $ 2,617,752 $ 300,584 (1) These will expire in varying amounts through the final expiration year.
Schedule of Unrecognized Tax Benefits Roll Forward	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: (in thousands) Unrecognized Tax Benefits Accrued Interest and Penalties Total Gross unrecognized tax benefits at January 1, 2016 $ 259,863 $ 26,259 $ 286,122 Additions based on tax positions related to 2016 17,323 1,505 18,828 Additions for tax positions of prior years 4,644 37,508 42,152 Reductions for tax positions of prior years (218,994 ) (18,828 ) (237,822 ) Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (4,194 ) (43 ) (4,237 ) Settlements (2,886 ) (3,028 ) (5,914 ) Gross unrecognized tax benefits at December 31, 2016 55,756 43,373 99,129 Additions based on tax positions related to 2017 987 — 987 Additions for tax positions of prior years 2,728 1,877 4,605 Reductions for tax positions of prior years (784 ) (1,926 ) (2,710 ) Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (9,999 ) (1,526 ) (11,525 ) Gross unrecognized tax benefits at December 31, 2017 48,688 41,798 90,486 Additions based on tax positions related to the current year 1,005 — 1,005 Additions for tax positions of prior years 2,030 1,527 3,557 Reductions for tax positions of prior years (1,545 ) (65 ) (1,610 ) Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (4,813 ) (764 ) (5,577 ) Settlements (62 ) (29 ) (91 ) Gross unrecognized tax benefits at December 31, 2018 $ 45,303 $ 42,467 $ 87,770 Gross net unrecognized tax benefits that if recognized would impact the effective tax rate at December 31, 2018 $ 45,303 $ 42,467 Less: Federal, state and local income tax benefits (6,171 ) Net unrecognized tax benefit reserves $ 81,599

FAIR VALUE (Tables)

FAIR VALUE (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present the assets and liabilities that are measured at fair value on a recurring basis by major product category and fair value hierarchy as of December 31, 2018 and December 31, 2017 . (in thousands) Level 1 Level 2 Level 3 Balance at Level 1 Level 2 Level 3 Balance at Financial assets: U.S. Treasury securities $ 526,364 $ 1,278,381 $ — $ 1,804,745 $ 139,615 $ 858,497 $ — $ 998,112 Corporate debt — 160,114 — 160,114 — 11,660 — 11,660 ABS — 109,638 327,199 436,837 — 156,910 350,252 507,162 State and municipal securities — 16 — 16 — 23 — 23 MBS — 9,231,275 — 9,231,275 — 12,885,412 — 12,885,412 Investment in debt securities AFS (3)(6) 526,364 10,779,424 327,199 11,632,987 139,615 13,912,502 350,252 14,402,369 Other investments - trading securities 4 6 — 10 1 — — 1 RICs HFI (4) — — 126,312 126,312 — — 186,471 186,471 LHFS (1)(5) — 209,506 — 209,506 — 197,691 — 197,691 MSRs (2) — — 149,660 149,660 — — 145,993 145,993 Other assets - derivatives (3) — 515,781 2,704 518,485 — 461,139 2,105 463,244 Total financial assets (7) $ 526,368 $ 11,504,717 $ 605,875 $ 12,636,960 $ 139,616 $ 14,571,332 $ 684,821 $ 15,395,769 Financial liabilities: Other liabilities - derivatives (3) — 496,593 838 497,431 — 427,217 594 427,811 Total financial liabilities $ — $ 496,593 $ 838 $ 497,431 $ — $ 427,217 $ 594 $ 427,811 (1) LHFS disclosed on the Consolidated Balance Sheet s also includes LHFS that are held at the lower of cost or fair value and are not presented within this table. (2) The Company has total MSRs of $152.1 million and $149.2 million as of December 31, 2018 .and December 31, 2017 , respectively. The Company has elected to account for the majority of its MSR balance using the FVO, while the remainder of the MSRs are accounted for using the lower of cost or fair value and are not presented within this table. (3) Refer to Note 3 for the fair value of investment securities and to Note 14 for the fair values of derivative assets and liabilities, on a further disaggregated basis. (4) RICs collateralized by vehicle titles at SC and RV/marine loans at SBNA. (5) Residential mortgage loans. (6) Investment in debt securities AFS disclosed on the Consolidated Balance Sheets at December 31, 2017 included $10.8 million of equity securities valued using the net asset value as a practical expedient that are not presented within this table. (7) Approximately $605.9 million of these financial assets were measured using model-based techniques, or Level 3 inputs, and represented approximately 4.8% of total assets measured at fair value on a recurring basis and approximately 0.4% of total consolidated assets.
Fair Value Measurements, Nonrecurring	Assets measured at fair value on a nonrecurring basis that were still held on the balance sheet were as follows: (in thousands) Level 1 Level 2 Level 3 Balance at Level 1 Level 2 Level 3 Balance at Impaired commercial LHFI $ 5,182 $ 150,208 $ 219,258 $ 374,648 $ — $ 226,832 $ 356,343 $ 583,175 Foreclosed assets — 16,678 81,208 97,886 — 20,011 106,581 126,592 Vehicle inventory — 342,617 — 342,617 — 325,203 — 325,203 LHFS (1) — — 1,073,795 1,073,795 — — 2,324,830 2,324,830 Auto loans impaired due to bankruptcy — 189,114 — 189,114 — 121,578 — 121,578 MSRs — — 9,386 9,386 — — 9,273 9,273 (1) These amounts include $1.1 billion and $1.1 billion of personal LHFS that were impaired as of December 31, 2018 and December 31, 2017 , respectively.
Increases and Decreases in Value of Certain Assets Measured at Fair Value on Nonrecurring Basis	The following table presents the increases and decreases in value of certain assets that are measured at fair value on a nonrecurring basis for which a fair value adjustment has been included in the Consolidated Statements of Operations relating to assets held at period-end: Year Ended December 31, (in thousands) Statement of Operations Location 2018 2017 2016 Impaired LHFI Provision for credit losses $ (58,818 ) $ (73,925 ) $ (99,082 ) Foreclosed assets Miscellaneous income, net (1) (12,137 ) (13,505 ) (8,339 ) LHFS Provision for credit losses (387 ) (3,700 ) — LHFS Miscellaneous income, net (1) (382,298 ) (386,422 ) (424,121 ) Auto loans impaired due to bankruptcy Provision for credit losses (93,277 ) (75,194 ) — Goodwill impairment Impairment of goodwill — (10,536 ) — MSRs Miscellaneous income, net (1) (743 ) (549 ) 503 (1) Gains are disclosed as positive numbers while losses are shown as a negative number regardless of the line item being affected.
Rollforward for Recurring Assets and Liabilities	The tables below present the changes in Level 3 balances for the years ended December 31, 2018 and 2017 , respectively, for those assets and liabilities measured at fair value on a recurring basis. Year Ended December 31, 2018 Year Ended December 31, 2017 (in thousands) Investments RICs HFI MSRs Derivatives, net Total Investments RICs HFI MSRs Derivatives, net Total Balances, beginning of period $ 350,252 $ 186,471 $ 145,993 $ 1,514 $ 684,230 $ 814,567 $ 217,170 $ 146,589 $ (29,000 ) $ 1,149,326 Losses in OCI (3,323 ) — — — (3,323 ) (9,570 ) — — — (9,570 ) Gains/(losses) in earnings — 17,018 7,906 (1,324 ) 23,600 — 54,363 1,967 (1,002 ) 55,328 Additions/Issuances — 6,631 12,778 — 19,409 — 21,671 15,788 — 37,459 Settlements (1) (19,730 ) (83,808 ) (17,017 ) 1,676 (118,879 ) (454,745 ) (106,733 ) (18,351 ) 31,516 (548,313 ) Balances, end of period $ 327,199 $ 126,312 $ 149,660 $ 1,866 $ 605,037 $ 350,252 $ 186,471 $ 145,993 $ 1,514 $ 684,230 Changes in unrealized gains (losses) included in earnings related to balances still held at end of period $ — $ 17,018 $ 7,906 $ (1,896 ) $ 23,028 $ — $ 54,363 $ 1,967 $ (791 ) $ 55,539 (1) Settlements include charge-offs, prepayments, paydowns and maturities.
Quantitative Information on Level 3 Recurring Assets and Liabilities	The following table presents quantitative information about the significant unobservable inputs within significant Level 3 recurring and nonrecurring assets and liabilities at December 31, 2018 and December 31, 2017 , respectively: (dollars in thousands) Fair Value at December 31, 2018 Valuation Technique Unobservable Inputs Range Financial Assets: ABS Financing bonds $ 303,224 DCF Discount Rate (1) 2.68% - 2.73% (2.69%) Sale-leaseback securities 23,975 Consensus Pricing (2) Offered quotes (3) 110.28 % RICs HFI 126,312 DCF CPR (4) 6.66 % Discount Rate (5) 9.50% - 14.50% (12.55%) Recovery Rate (6) 25.00% - 43.00% (41.6%) Personal LHFS (10) 1,068,757 Lower of Market or Income Approach Market Participant View 70.00% - 80.00% Discount Rate 15.00% - 25.00% Default Rate 30.00% - 40.00% Net Principal & Interest Payment Rate 70.00% - 85.00% Loss Severity Rate 90.00% - 95.00% MSRs (9) 149,660 DCF CPR (7) 7.06% - 100.00% (9.22%) Discount Rate (8) 9.71 % (1) Based on the applicable term and discount index. (2) Consensus pricing refers to fair value estimates that are generally developed using information such as dealer quotes or other third-party valuations or comparable asset prices. (3) Based on the nature of the input, a range or weighted average does not exist. For sale-leaseback securities, the Company owns one security. (4) Based on the analysis of available data from a comparable market securitization of similar assets. (5) Based on the cost of funding of debt issuance and recent historical equity yields. (6) Based on the average severity utilizing reported severity rates and loss severity utilizing available market data from a comparable securitized pool. (7) Average CPR projected from collateral stratified by loan type and note rate. (8) Average discount rate from collateral stratified by loan type and note rate. (9) Excludes MSR valued on a non-recurring basis for which we do not consider there to be significant unobservable assumptions. (10) Excludes non-significant level 3 LHFS portfolios. (dollars in thousands) Fair Value at December 31, 2017 Valuation Technique Unobservable Inputs Range Financial Assets: ABS Financing bonds $ 304,727 DCF Discount Rate (1) 2.16% - 2.90% (2.28%) Sale-leaseback securities $ 45,525 Consensus Pricing (2) Offered Quotes (3) 120.19 % RICs HFI $ 186,471 DCF CPR (4) 6.66 % Discount Rate (5) 9.50% - 14.50% (12.37%) Recovery Rate (6) 25.00% - 43.00% (41.51%) Personal LHFS (10) $ 1,062,090 Lower of Market or Income Approach Market Participant View 70.00% - 80.00% Discount Rate 15.00% - 20.00% Default Rate 30.00% - 40.00% Net Principal & Interest Payment Rate 70.00% - 85.00% Loss Severity Rate 90.00% - 95.00% RICs HFS (10) $ 1,101,049 DCF Discount Rate 3.00% - 6.00% Default Rate 3.00% - 4.00% Prepayment Rate 15.00% - 20.00% Loss Severity Rate 50.00% - 60.00% MSRs (9) $ 145,993 DCF CPR (7) 0.06% - 46.95% (9.80%) Discount Rate (8) 9.90 % (1), (2), (3), (4), (5), (6), (7), (8), (9), (10) - See corresponding footnotes to the December 31, 2018 Level 3 Significant Inputs table above.
Schedule of Fair Value of Financial Instruments	The carrying amounts and estimated fair values, as well as the level within the fair value hierarchy, of the Company's financial instruments are as follows: December 31, 2018 December 31, 2017 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 7,790,593 $ 7,790,593 $ 7,790,593 $ — $ — $ 6,519,967 $ 6,519,967 $ 6,519,967 $ — $ — Investment in debt securities AFS (2) 11,632,987 11,632,987 526,364 10,779,424 327,199 14,402,369 14,402,369 139,615 13,912,502 350,252 Investment in debt securities HTM 2,750,680 2,676,049 — 2,676,049 — 1,799,808 1,773,938 — 1,773,938 — Other investments - trading securities 10 10 4 6 — 1 1 1 — — LHFI, net 83,148,738 83,415,697 5,182 150,208 83,260,307 76,795,794 78,579,144 — 136,832 78,442,312 LHFS 1,283,278 1,283,301 — 209,506 1,073,795 2,522,486 2,522,521 — 197,691 2,324,830 Restricted cash 2,931,711 2,931,711 2,931,711 — — 3,818,807 3,818,807 3,818,807 — — MSRs (1) 152,121 159,046 — — 159,046 149,197 155,266 — — 155,266 Derivatives 518,485 518,485 — 515,781 2,704 463,244 463,244 — 461,139 2,105 Financial liabilities: Deposits 61,511,380 61,456,268 54,039,848 7,416,420 — 60,831,103 60,864,110 55,456,511 5,407,599 — Borrowings and other debt obligations 44,953,784 45,083,518 — 31,494,126 13,589,392 39,003,313 39,335,087 — 23,281,166 16,053,921 Derivatives 497,431 497,431 — 496,593 838 427,811 427,811 — 427,217 594 (1) The Company has elected to account for the majority of its MSR balance using the FVO, while the remainder of the MSRs are accounted for using the lower of cost or fair value. (2) Investment in debt securities AFS disclosed on the Consolidated Balance Sheets at December 31, 2017 included $10.8 million of equity securities valued using net asset value as a practical expedient that are not presented within this table. The balance of these equity securities at December 31, 2018 was $11.0 million and was included in the Other investments line item on the Consolidated Balance Sheets .
Summary of Difference Between Fair Value and Principal Balance of LHFS	The following table summarizes the differences between the fair value and the principal balance of LHFS and RICs measured at fair value on a recurring basis as of December 31, 2018 and December 31, 2017 : December 31, 2018 December 31, 2017 (in thousands) Fair Value Aggregate UPB Difference Fair Value Aggregate UPB Difference LHFS (1) $ 209,506 $ 204,061 $ 5,445 $ 197,691 $ 194,928 $ 2,763 RICs HFI 126,312 142,882 (16,570 ) 186,471 211,580 (25,109 ) Nonaccrual loans 7,630 10,427 (2,797 ) 15,023 19,836 (4,813 ) (1) LHFS disclosed on the Consolidated Balance Sheet s also includes LHFS that are held at the lower of cost or fair value that are not presented within this table. There were no nonaccrual loans related to the LHFS measured using the FVO.

NON-INTEREST INCOME AND OTHER_2

NON-INTEREST INCOME AND OTHER EXPENSES (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Details of Non-Interest Income	The following table presents the details of the Company's Non-interest income for the following periods: Year Ended December 31, (in thousands) 2018 2017 (1) 2016 (1) Non-interest income: Consumer and commercial fees $ 568,147 $ 616,438 $ 689,839 Lease income 2,375,596 2,017,775 1,839,307 Miscellaneous income, net Mortgage banking income, net 34,612 56,659 63,790 BOLI 58,939 66,784 57,796 Capital market revenue 165,392 195,906 190,647 Net gain on sale of operating leases 202,793 127,156 66,909 Asset and wealth management fees 165,765 147,749 148,514 Loss on sale of non-mortgage loans (351,751 ) (370,289 ) (399,312 ) Other miscellaneous income, net 31,532 45,519 40,712 Net (losses)/gains on sale of investment securities (6,717 ) (2,444 ) 57,503 Total Non-interest income $ 3,244,308 $ 2,901,253 $ 2,755,705 (1) - Prior period amounts have not been adjusted under the modified retrospective method. For further information on the adoption of this standard, see Note 1.
Disaggregation of Revenue from Contracts with Customers	The following table presents the Company's Non-interest income disaggregated by revenue source: Year Ended December 31, (in thousands) 2018 2017 (1) 2016 (1) Non-interest income: In-scope of revenue from contracts with customers: Depository services (2) $ 236,381 $ 242,995 $ 232,993 Commission and trailer fees (3) 143,733 136,497 159,275 Interchange income, net (3) 60,258 58,525 53,294 Underwriting service fees (3) 71,536 97,143 99,366 Asset and wealth management fees (3) 138,108 112,533 113,850 Other revenue from contracts with customers (3) 36,692 40,722 33,607 Total In-scope of revenue from contracts with customers 686,708 688,415 692,385 Out-of-scope of revenue from contracts with customers: Consumer and commercial fees (4) 294,371 347,216 341,426 Lease income 2,375,596 2,017,775 1,839,307 Miscellaneous income/(loss) (4) (105,650 ) (149,709 ) (174,916 ) Net (losses)/gains on sale of investment securities (6,717 ) (2,444 ) 57,503 Total Out-of-scope of revenue from contracts with customers 2,557,600 2,212,838 2,063,320 Total Non-interest income $ 3,244,308 $ 2,901,253 $ 2,755,705 (1) - Prior period amounts have not been adjusted under the modified retrospective method. For further information on the adoption of this standard, see Note 1. (2) - Primarily recorded in the Company's Condensed Consolidated Statements of Operations within Consumer and commercial fees . (3) - Primarily recorded in the Company's Condensed Consolidated Statements of Operations within Miscellaneous income, net. (4) - The balance presented excludes certain revenue streams that are considered in-scope and presented above.
Schedule of Other Expense	The following table presents the Company's other expenses for the following periods: Year Ended December 31, (in thousands) 2018 2017 2016 Other expenses: Amortization of intangibles $ 60,650 $ 61,491 $ 70,034 Deposit insurance premiums and other expenses 61,983 70,661 77,976 Loss on debt extinguishment 3,470 30,349 114,232 Impairment of goodwill — 10,536 — Other administrative expenses 461,291 484,992 418,911 Other miscellaneous expenses 21,595 21,128 1,741 Total Other expenses $ 608,989 $ 679,157 $ 682,894

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables) - SC	12 Months Ended
	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of Stock Options and Related Activity	A summary of SC's stock options and related activity as of and for the year ended December 31, 2018 , is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in whole dollars) (in 000's) Options outstanding at January 1, 2018 1,695,008 $ 12.39 4.7 $ 12,058 Exercised (863,811 ) 9.50 7,918 Expired (92,885 ) 23.27 Forfeited (92,936 ) 23.06 Options outstanding at December 31, 2018 645,376 $ 13.15 4.0 $ 3,682 Options exercisable at December 31, 2018 557,555 $ 12.07 3.7 $ 3,572 Options expected to vest after December 31, 2018 87,821 $ 20.03 5.6 $ 110 A summary of the status and changes of SC's nonvested stock options as of and for the year ended December 31, 2018 , is presented below: Shares Weighted Average Grant Date Fair Value Non-vested at January 1, 2018 239,838 $ 7.29 Granted — — Vested (59,081 ) 7.33 Forfeited (92,936 ) 7.96 Non-vested at December 31, 2018 87,821 $ 6.55
Summary of the Assumptions Used to Estimate the Fair Value of Stock Options	The following summarizes the assumptions used for estimating the fair value of stock options granted to employees for the year ended December 31, 2016. For the year ended December 31, 2016 Assumption: Risk-free interest rate 1.79% Expected life (in years) 6.5 Expected volatility 33% Dividend yield 3.69% Weighted average grant date fair value $3.14
Summary of Restricted Stock Units and Performance Stock Units and Related Activity	A summary of the Company’s RSUs and performance stock units and related activity as of and for the year ended December 31, 2018 is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in whole dollars) (in 000's) Outstanding at January 1, 2018 650,252 $ 12.68 1.0 $ 12,108 Granted 617,279 16.11 Vested (522,810 ) 14.18 8,616 Forfeited/cancelled (45,922 ) 11.64 Unvested at December 31, 2018 698,799 $ 14.53 1.1 $ 12,292

COMMITMENTS, CONTINGENCIES AN_2

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Commitments Amount	The following table details the amount of commitments at the dates indicated: Other Commitments December 31, 2018 December 31, 2017 (in thousands) Commitments to extend credit $ 30,269,311 $ 29,475,864 Letters of credit 1,488,714 1,559,297 Unsecured revolving lines of credit 28,145 27,938 Recourse exposure on sold loans 49,733 46,572 Commitments to sell loans 875 19,477 Total commitments $ 31,836,778 $ 31,129,148
Summary of Liabilities for Commitments and Contingencies	The following table summarizes liabilities recorded for commitments and contingencies as of December 31, 2018 and 2017, all of which are included in accounts payable and accrued expenses in the accompanying consolidated balance sheets: Agreement or Legal Matter Commitment or Contingency December 31, 2018 December 31, 2017 (in thousands) Chrysler Agreement Revenue-sharing and gain-sharing payments $ 7,001 $ 6,580 Agreement with Bank of America Servicer performance fee 6,353 8,072 Agreement with Citizens Bank of Philadelphia (CBP") Loss-sharing payments 3,708 5,625 Other contingencies Consumer arrangements 2,138 6,326
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum annual rentals under non-cancelable operating leases and sale-leaseback leases, net of expected sublease income, at December 31, 2018, are summarized as follows: AT DECEMBER 31, 2018 (in thousands) Lease Payments Future Minimum Expected Sublease Income Net Payments 2019 $ 146,108 $ (4,660 ) $ 141,448 2020 116,871 (2,527 ) 114,344 2021 96,784 (675 ) 96,109 2022 83,028 (550 ) 82,478 2023 70,158 (562 ) 69,596 Thereafter 169,046 (535 ) 168,511 Total $ 681,995 $ (9,509 ) $ 672,486

RELATED PARTY TRANSACTIONS (Tab

RELATED PARTY TRANSACTIONS (Tables)	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	Contributions from Santander that impact common stock and paid in capital within the Consolidated Statements of Stockholder's Equity are disclosed within the table below: For Year Ended December 31, (in thousands) 2018 2017 Cash contribution $ 85,035 $ 9,000 Net assets acquired — 2,747 Adjustment to book value of assets purchased on January 1 277 — Deferred tax asset on purchased assets 3,156 — Contribution from shareholder $ 88,468 $ 11,747 Other information relating to SPAIN securitization platform for the years ended December 31, 2018 and 2017 is as follows: (in thousands) December 31, 2018 December 31, 2017 Servicing fee income $ 35,058 $ 12,346 Loss (Gain) on sale, excluding lower of cost of market adjustments (if any) 20,736 13,026 Servicing fees receivable 2,983 1,848 Collections due to Santander 15,968 12,961

REGULATORY MATTERS (Tables)

REGULATORY MATTERS (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following schedule summarizes the actual capital balances of the Bank and SHUSA at December 31, 2018 and 2017 : REGULATORY CAPITAL (Dollars in thousands) Common Equity Tier 1 Capital Ratio Tier 1 Capital Total Capital Leverage SBNA at December 31, 2018 (1) : Regulatory capital $ 10,179,299 $ 10,179,299 $ 10,819,641 $ 10,179,299 Capital ratio 17.14 % 17.14 % 18.22 % 14.08 % SHUSA at December 31, 2018 (1) : Regulatory capital $ 16,758,748 $ 18,193,361 $ 19,807,403 $ 18,193,361 Capital ratio 15.53 % 16.86 % 18.35 % 14.03 % Common Equity Tier 1 Capital Ratio Tier 1 Capital Total Capital Leverage SBNA at December 31, 2017 (1) : Regulatory capital $ 10,014,774 $ 10,014,774 $ 10,668,635 $ 10,014,774 Capital ratio 18.17 % 18.17 % 19.36 % 13.86 % SHUSA at December 31, 2017 (1) : Regulatory capital $ 16,342,296 $ 17,795,929 $ 19,450,655 $ 17,795,929 Capital ratio 16.38 % 17.84 % 19.50 % 14.17 % (1) Represents transitional ratios under Basel III

BUSINESS SEGMENT INFORMATION (T

BUSINESS SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information	The following tables present certain information regarding the Company’s segments. For the Year Ended SHUSA Reportable Segments December 31, 2018 Consumer & Business Banking Commercial Banking CIB Other (2) SC (3) SC Purchase Price Adjustments (4) Eliminations (4) Total (in thousands) Net interest income $ 1,301,671 $ 639,558 $ 136,402 $ 239,664 $ 3,958,280 $ 31,083 $ 38,192 $ 6,344,850 Non-interest income 308,614 87,803 195,210 405,319 2,297,517 9,678 (59,833 ) 3,244,308 Provision for / (release of) credit losses 100,523 (19,405 ) 9,335 24,254 2,205,585 19,606 — 2,339,898 Total expenses 1,487,835 327,291 235,979 887,681 2,857,944 47,173 (11,578 ) 5,832,325 Income/(loss) before income taxes 21,927 419,475 86,298 (266,952 ) 1,192,268 (26,018 ) (10,063 ) 1,416,935 Intersegment revenue/(expense) (1) 2,507 9,420 (12,362 ) 435 — — — — Total assets 21,024,741 25,712,309 8,521,004 36,416,376 43,959,855 — — 135,634,285 (1) Intersegment revenue/(expense) represents charges or credits for funds used or provided by each of the segments and is included in net interest income. (2) Other includes the results of the entities transferred to the IHC, earnings from non-strategic assets, the investment portfolio, interest expense on the Bank’s and the Company's borrowings and other debt obligations, amortization of intangible assets and certain unallocated corporate income and indirect expenses. (3) Management of SHUSA manages SC by analyzing the pre-Change in Control results of SC as disclosed in this column. (4) SC Purchase Price Adjustments represents the impact that SC purchase marks had on the results of SC included within the consolidated operations of SHUSA, while eliminations eliminate intercompany transactions. NOTE 23. BUSINESS SEGMENT INFORMATION (continued) For the Year Ended SHUSA Reportable Segments December 31, 2017 Consumer & Business Banking Commercial Banking CIB Other (2) SC (3) SC Purchase Price Adjustments (4) Eliminations (4) Total (in thousands) Net interest income $ 1,115,169 $ 630,078 $ 153,622 $ 255,096 $ 4,114,600 $ 124,551 $ 30,834 $ 6,423,950 Non-interest income 356,936 70,219 186,749 548,806 1,793,408 (9,177 ) (45,688 ) 2,901,253 Provision for / (release of) credit losses 85,115 29,586 33,275 93,165 2,363,812 154,991 — 2,759,944 Total expenses 1,500,815 324,385 218,696 955,292 2,740,190 44,066 (19,120 ) 5,764,324 Income/(loss) before income taxes (113,825 ) 346,326 88,400 (244,555 ) 804,006 (83,683 ) 4,266 800,935 Intersegment revenue/(expense) (1) 2,330 6,137 (8,086 ) (381 ) — — — — Total assets 18,714,285 25,318,068 6,949,373 37,890,000 39,402,799 — — 128,274,525 (1) Intersegment revenue/(expense) represents charges or credits for funds used or provided by each of the segments and is included in net interest income. (2) Other includes the results of the entities transferred to the IHC, earnings from non-strategic assets, the investment portfolio, interest expense on the Bank’s and the Company's borrowings and other debt obligations, amortization of intangible assets and certain unallocated corporate income and indirect expenses. (3) Management of SHUSA manages SC by analyzing the pre-Change in Control results of SC as disclosed in this column. (4) SC Purchase Price Adjustments represents the impact that SC purchase marks had on the results of SC included within the consolidated operations of SHUSA, while eliminations eliminate intercompany transactions. For the Year Ended SHUSA Reportable Segments December 31, 2016 Consumer & Business Banking Commercial Banking CIB Other (2) SC (3) SC Purchase Price Adjustments (4) Eliminations (4) Total (in thousands) Net interest income $ 981,951 $ 638,001 $ 239,074 $ 51,736 $ 4,448,535 $ 187,296 $ 18,099 $ 6,564,692 Total non-interest income 384,210 87,144 241,992 622,145 1,432,634 42,271 (54,691 ) 2,755,705 Provision for credit losses 56,446 85,910 7,952 52,490 2,468,199 308,728 — 2,979,725 Total expenses 1,511,427 318,400 228,999 1,065,027 2,252,259 56,557 (46,475 ) 5,386,194 Income/(loss) before income taxes (201,712 ) 320,835 244,115 (443,636 ) 1,160,711 (135,718 ) 9,883 954,478 Intersegment revenue/(expense) (1) 42,168 28,464 (1,728 ) (68,904 ) — — — — (1) Intersegment revenue/(expense) represents charges or credits for funds used or provided by each of the segments and is included in net interest income. (2) Other includes the results of the entities transferred to the IHC, earnings from non-strategic assets, the investment portfolio, interest expense on the Bank’s and the Company's borrowings and other debt obligations, amortization of intangible assets and certain unallocated corporate income and indirect expenses. (3) Management of SHUSA manages SC by analyzing the pre-Change in Control results of SC as disclosed in this column. (4) SC Purchase Price Adjustments represents the impact that SC purchase marks had on the results of SC included within the consolidated operations of SHUSA, while eliminations eliminate intercompany transactions. During the fourth quarter of 2018, the CODM drove a reorganization of its business leadership to better align the teams with how the CODM allocates resources and assesses business performance. Changes were made to the internal management reporting in 2019 and, accordingly, beginning in the first quarter of 2019, the current Commercial Banking segment will be reported as two separate reportable segments: Commercial Banking and Commercial Real Estate.

PARENT COMPANY FINANCIAL INFO_2

PARENT COMPANY FINANCIAL INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Balance Sheets	BALANCE SHEETS AT DECEMBER 31, 2018 2017 (in thousands) Assets Cash and cash equivalents $ 3,562,789 $ 4,369,307 AFS investment securities 247,510 248,692 Loans to non-bank subsidiaries 3,500,000 3,000,000 Investment in subsidiaries: Bank subsidiary 11,219,433 11,160,429 Non-bank subsidiaries 10,915,872 10,375,573 Premises and equipment, net 52,447 84,873 Equity method investments 3,801 9,324 Restricted cash 79,555 74,156 Deferred tax assets, net 66 29,096 Other assets 348,268 284,500 Total assets $ 29,929,741 $ 29,635,950 Liabilities and stockholder's equity Borrowings and other debt obligations $ 8,351,685 $ 8,149,565 Borrowings from non-bank subsidiaries 145,165 142,554 Deferred tax liabilities, net 61,332 65,814 Other liabilities 235,144 245,249 Total liabilities 8,793,326 8,603,182 Stockholder's equity 21,136,415 21,032,768 Total liabilities and stockholder's equity $ 29,929,741 $ 29,635,950
Statements of Operations and Comprehensive Income/(Loss)	STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME/(LOSS) YEAR ENDED DECEMBER 31, 2018 2017 2016 (in thousands) Interest income $ 123,389 $ 67,369 $ 12,350 Income from equity method investments 78 2,737 185 Other income 67,100 52,584 34,213 Net gains on sale of investment securities — 1,845 — Total income 190,567 124,535 46,748 Interest expense 288,006 214,280 155,256 Other expense 301,418 349,882 361,229 Total expense 589,424 564,162 516,485 Loss before income taxes and equity in earnings of subsidiaries (398,857 ) (439,627 ) (469,737 ) Income tax (benefit)/provision (51,114 ) 18,165 (121,840 ) Loss before equity in earnings of subsidiaries (347,743 ) (457,792 ) (347,897 ) Equity in undistributed earnings of: Bank subsidiary 489,452 239,887 230,017 Non-bank subsidiaries 565,695 770,255 480,764 Net income 707,404 552,350 362,884 Other comprehensive income, net of tax: Net unrealized (losses)/gains on cash flow hedge derivative financial instruments (3,796 ) 337 9,856 Net unrealized losses recognized on investment securities (80,891 ) (9,744 ) (34,812 ) Amortization of defined benefit plans 560 4,184 2,278 Total other comprehensive loss (84,127 ) (5,223 ) (22,678 ) Comprehensive income $ 623,277 $ 547,127 $ 340,206
Statement of Cash Flows	STATEMENT OF CASH FLOWS FOR THE YEAR ENDED DECEMBER 31 2018 2017 2016 (in thousands) CASH FLOWS FROM OPERATING ACTIVITIES: Net income $ 707,404 $ 552,350 $ 362,884 Adjustments to reconcile net income to net cash provided by operating activities: Deferred tax expense/(benefit) 24,277 75,053 (94,551 ) Undistributed earnings of: Bank subsidiary (489,452 ) (239,887 ) (230,017 ) Non-bank subsidiaries (565,695 ) (770,255 ) (480,764 ) Net gain on sale of investment securities — (1,845 ) — Stock based compensation expense — (164 ) 395 Equity earnings from equity method investments (78 ) (2,737 ) (185 ) Dividends from investment in subsidiaries 592,797 150,330 — Depreciation, amortization and accretion 44,388 45,475 24,201 Loss on debt extinguishment 3,955 5,582 — Net change in other assets and other liabilities (60,256 ) 51,267 11,484 Net cash provided by/(used in) operating activities 257,340 (134,831 ) (406,553 ) CASH FLOWS FROM INVESTING ACTIVITIES: Proceeds from sales of AFS investment securities — 741,250 — Proceeds from prepayments and maturities of AFS investment securities — — 2,000,000 Purchases of AFS investment securities — — (2,990,800 ) Net capital (contributed to)/returned from subsidiaries (208,622 ) (37,380 ) 45,616 Originations of loans to subsidiaries (4,295,000 ) (5,105,000 ) — Repayments of loans by subsidiaries 3,795,000 2,405,000 — Purchases of premises and equipment (15,333 ) (22,493 ) (33,762 ) Net cash used in investing activities (723,955 ) (2,018,623 ) (978,946 ) CASH FLOWS FROM FINANCIAL ACTIVITIES: Repayment of parent company debt obligations (1,224,474 ) (931,252 ) (1,976,037 ) Net proceeds received from Parent Company senior notes and senior credit facility 1,423,274 4,656,279 3,094,249 Net change in borrowings from non-bank subsidiaries 2,611 1,400 1,010 Dividends to preferred stockholders (10,950 ) (14,600 ) (15,128 ) Dividends paid on common stock (410,000 ) (10,000 ) — Capital contribution from shareholder 85,035 9,000 — Impact of SC stock option activity — — 69 Redemption of preferred stock (200,000 ) — (75,000 ) Net cash (used in)/provided by financing activities (334,504 ) 3,710,827 1,029,163 Net (decrease)/increase in cash, cash equivalents, and restricted cash (1) (801,119 ) 1,557,373 (356,336 ) Cash, cash equivalents, and restricted cash at beginning of period (1) 4,443,463 2,886,090 3,242,426 Cash, cash equivalents, and restricted cash at end of period (1) $ 3,642,344 $ 4,443,463 $ 2,886,090 NON-CASH TRANSACTIONS Capital expenditures in accounts payable $ 8,174 $ 10,729 $ 25,027 Capital distribution to shareholder — — 30,789 Contribution of SFS from shareholder (2) — 322,078 — Contribution of incremental SC shares from shareholder — 566,378 — Contribution of SAM from shareholder (2) 4,396 — — (1) The beginning, ending and net change balances for the periods ended December 31, 2018 , December 31, 2017 , and December 31, 2016 include restricted cash balances of $74.2 million , $79.6 million , and $5.4 million , respectively; $74.0 million , $74.2 million , and $133 thousand , respectively; and $73.1 million , $74.0 million , and $963 thousand , respectively. (2) The contributions of SFS and SAM were accounted for as non-cash transactions. Refer to Note 1 - Basis of Presentation and Accounting Policies for additional information.

BASIS OF PRESENTATION AND ACC_4

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (General) (Details)	12 Months Ended
	Dec. 31, 2018
SC
Noncontrolling Interest [Line Items]
Ownership percentage by parent	69.70%
Percentage owned by noncontrolling shareholders	30.30%
SC
Noncontrolling Interest [Line Items]
Financing contract term	10 years

BASIS OF PRESENTATION AND ACC_5

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Intermediate Holding Company) (Details) - USD ($) $ in Thousands		Jul. 02, 2018	Jul. 01, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018	Dec. 31, 2015
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total assets				$ 135,634,285	$ 128,274,525		$ 128,276,447
Total liabilities				111,787,053	104,583,693		104,582,315
Total stockholders' equity				23,847,232	23,690,832	$ 22,378,758	$ 23,694,132	$ 21,847,100
Net income				707,404	552,350	362,884
Contribution to stockholder's equity		$ 4,400	$ 322,100
SAM
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total assets		5,400
Total liabilities		1,000
Total stockholders' equity		$ 4,400
Contribution to stockholder's equity	[1]			4,396	0	0
SAM | Not Retrospectively Restating Financial Statements for Contributions | Pro Forma
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income				(1,000)
SFS
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Contribution to stockholder's equity	[1]			$ 0	322,078	0
SFS | Not Retrospectively Restating Financial Statements for Contributions | Pro Forma
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income					$ (6,000)	$ 9,300
[1]	The contributions of SFS and SAM were accounted for as non-cash transactions. Refer to Note 1 - Basis of Presentation and Accounting Policies for additional information.

BASIS OF PRESENTATION AND ACC_6

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Corrections to Previously Reported Amounts) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Minimum payment threshold (as a percentage)	90.00%
RICs and auto loans - originated
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Minimum payment threshold (as a percentage)	90.00%	50.00%

BASIS OF PRESENTATION AND ACC_7

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Correction of Error, Impact on Balance Sheet and Statements of Operations) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016	Jan. 01, 2018	Dec. 31, 2015
ASSETS
Loans held-for-investment (LHFI)		$ 87,045,868	[1],[2]	$ 80,790,681	[1],[2]		$ 80,796,195
ALLL	[2]	(3,897,130)		(3,994,887)
Other assets		3,653,336	[2],[3]	3,646,405	[2],[3]		3,642,813
TOTAL ASSETS		135,634,285		128,274,525			128,276,447
LIABILITIES
Deferred tax liabilities, net		1,212,538		965,290
TOTAL LIABILITIES		111,787,053		104,583,693			104,582,315
STOCKHOLDER'S EQUITY
Retained earnings		3,783,405		3,453,957			3,457,257
TOTAL SHUSA STOCKHOLDER'S EQUITY		21,321,057		21,173,981
NCI		2,526,175		2,516,851
TOTAL STOCKHOLDER'S EQUITY		23,847,232		23,690,832		$ 22,378,758	$ 23,694,132	$ 21,847,100
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY		135,634,285		128,274,525
INTEREST INCOME:
Loans		7,546,376		7,377,345		7,611,347
TOTAL INTEREST INCOME		8,069,053		7,876,079		7,989,751
NET INTEREST INCOME		6,344,850		6,423,950		6,564,692
Provision for credit losses		2,339,898		2,759,944		2,979,725
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES		4,004,952		3,664,006		3,584,967
Income tax provision/(benefit)		425,900		(157,040)		313,715
NET INCOME including NCI		991,035		957,975		640,763
LESS: NET INCOME ATTRIBUTABLE TO NCI		283,631		405,625		277,879
NET INCOME ATTRIBUTABLE TO SHUSA		$ 707,404		552,350		$ 362,884
As Reported
ASSETS
Loans held-for-investment (LHFI)				80,740,852
ALLL				(3,911,575)
Other assets				3,632,427
TOTAL ASSETS				128,294,030
LIABILITIES
Deferred tax liabilities, net				969,996
TOTAL LIABILITIES				104,588,399
STOCKHOLDER'S EQUITY
Retained earnings				3,462,674
TOTAL SHUSA STOCKHOLDER'S EQUITY				21,182,698
NCI				2,522,933
TOTAL STOCKHOLDER'S EQUITY				23,705,631
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY				128,294,030
INTEREST INCOME:
Loans				7,287,400
TOTAL INTEREST INCOME				7,786,134
NET INTEREST INCOME				6,334,005
Provision for credit losses				2,650,494
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES				3,683,511
Income tax provision/(benefit)				(152,334)
NET INCOME including NCI				972,774
LESS: NET INCOME ATTRIBUTABLE TO NCI				411,707
NET INCOME ATTRIBUTABLE TO SHUSA				561,067
Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans | Corrections
ASSETS
Loans held-for-investment (LHFI)				49,829
ALLL				(83,312)
Other assets				13,978
TOTAL ASSETS				(19,505)
LIABILITIES
Deferred tax liabilities, net				(4,706)
TOTAL LIABILITIES				(4,706)
STOCKHOLDER'S EQUITY
Retained earnings				(8,717)
TOTAL SHUSA STOCKHOLDER'S EQUITY				(8,717)
NCI				(6,082)
TOTAL STOCKHOLDER'S EQUITY				(14,799)
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY				(19,505)
INTEREST INCOME:
Loans				89,945
TOTAL INTEREST INCOME				89,945
NET INTEREST INCOME				89,945
Provision for credit losses				109,450
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES				(19,505)
Income tax provision/(benefit)				(4,706)
NET INCOME including NCI				(14,799)
LESS: NET INCOME ATTRIBUTABLE TO NCI				(6,082)
NET INCOME ATTRIBUTABLE TO SHUSA				$ (8,717)
[1]	LHFI includes $126.3 million and $186.5 million of loans recorded at fair value at December 31, 2018 and December 31, 2017, respectively.
[2]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.
[3]	Includes mortgage servicing rights ("MSRs") of $149.7 million and $146.0 million at December 31, 2018 and December 31, 2017, respectively, for which the Company has elected the FVO. See Note 16 to these Consolidated Financial Statements for additional information.

BASIS OF PRESENTATION AND ACC_8

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Correction of Error, Impact on Statements of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash provided by operating activities	$ 7,015,061	$ 4,964,060	$ 5,271,542
Net cash provided by (used in) investing activities	$ (12,460,839)	3,281,179	$ 577,786
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash provided by operating activities		4,888,092
Net cash provided by (used in) investing activities		3,357,147
Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans | Corrections
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash provided by operating activities		75,968
Net cash provided by (used in) investing activities		$ (75,968)

BASIS OF PRESENTATION AND ACC_9

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Correction of Error, Impact on Non-performing Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Non-performing loans	$ 2,255,437	$ 2,390,893
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Non-performing loans		2,949,997
Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans | Corrections
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Non-performing loans		(559,104)
Non-performing
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total non-performing assets	2,589,195	2,734,552
Non-performing | As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total non-performing assets		3,293,656
Non-performing | Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans | Corrections
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total non-performing assets		(559,104)
Consumer
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Non-performing loans	1,890,739	1,926,360
Consumer | RICs and auto loans - originated
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Non-performing loans	$ 1,455,406	1,257,122
Consumer | RICs and auto loans - originated | As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Non-performing loans		1,816,226
Consumer | RICs and auto loans - originated | Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans | Corrections
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Non-performing loans		$ (559,104)

BASIS OF PRESENTATION AND AC_10

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Correction of Error, Impact on Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due	$ 5,714,660	$ 5,547,989
Current	82,614,486	77,765,178
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Current		77,941,907
Corrections | Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Current		(176,729)
30-89 DPD
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due	4,772,117	4,545,634
30-89 DPD | As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due		4,349,047
30-89 DPD | Corrections | Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due		196,587
90 or Greater DPD
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due	942,543	1,002,355
90 or Greater DPD | As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due		972,384
90 or Greater DPD | Corrections | Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due		29,971
Consumer | RICs and auto loans - originated
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due	4,495,834	3,959,324
Current	24,036,251	20,272,977
Consumer | RICs and auto loans - originated | As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Current		20,449,706
Consumer | RICs and auto loans - originated | Corrections | Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Current		(176,729)
Consumer | 30-89 DPD | RICs and auto loans - originated
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due	4,076,015	3,602,308
Consumer | 30-89 DPD | RICs and auto loans - originated | As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due		3,405,721
Consumer | 30-89 DPD | RICs and auto loans - originated | Corrections | Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due		196,587
Consumer | 90 or Greater DPD | RICs and auto loans - originated
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due	$ 419,819	357,016
Consumer | 90 or Greater DPD | RICs and auto loans - originated | As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due		327,045
Consumer | 90 or Greater DPD | RICs and auto loans - originated | Corrections | Correction of Errors in Accounting for Retail Installment Contracts and Auto Loans
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total Past Due		$ 29,971

BASIS OF PRESENTATION AND AC_11

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Cumulative Effect of Changes) (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets - LHFI	$ 87,045,868	[1],[2]	$ 80,796,195	$ 80,790,681	[1],[2]
Other assets	3,653,336	[2],[3]	3,642,813	3,646,405	[2],[3]
Total assets	135,634,285		128,276,447	128,274,525
Liabilities - other liabilities	912,775	[2]	798,025	799,403	[2]
Total liabilities	111,787,053		104,582,315	104,583,693
Stockholders' equity - retained earnings	3,783,405		3,457,257	3,453,957
Total stockholders' equity	$ 23,847,232		23,694,132	$ 23,690,832		$ 22,378,758	$ 21,847,100
Difference between Revenue Guidance in Effect before and after Topic 606 | ASU 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets - LHFI			5,514
Other assets			(3,592)
Total assets			1,922
Liabilities - other liabilities			(1,378)
Total liabilities			(1,378)
Stockholders' equity - retained earnings			3,300
Total stockholders' equity			$ 3,300
[1]	LHFI includes $126.3 million and $186.5 million of loans recorded at fair value at December 31, 2018 and December 31, 2017, respectively.
[2]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.
[3]	Includes mortgage servicing rights ("MSRs") of $149.7 million and $146.0 million at December 31, 2018 and December 31, 2017, respectively, for which the Company has elected the FVO. See Note 16 to these Consolidated Financial Statements for additional information.

BASIS OF PRESENTATION AND AC_12

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Impact on Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets - LHFI	$ 87,045,868	[1],[2]	$ 80,796,195	$ 80,790,681	[1],[2]
Other assets	3,653,336	[2],[3]	3,642,813	3,646,405	[2],[3]
Total assets	135,634,285		128,276,447	128,274,525
Liabilities - other liabilities	912,775	[2]	798,025	799,403	[2]
Total liabilities	111,787,053		104,582,315	104,583,693
Stockholders' equity - retained earnings	3,783,405		3,457,257	3,453,957
Total stockholders' equity	23,847,232		$ 23,694,132	$ 23,690,832		$ 22,378,758	$ 21,847,100
Balance Without Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets - LHFI	87,041,454
Other assets	3,656,543
Total assets	135,633,078
Liabilities - other liabilities	914,153
Total liabilities	111,788,431
Stockholders' equity - retained earnings	3,780,820
Total stockholders' equity	$ 23,844,647
[1]	LHFI includes $126.3 million and $186.5 million of loans recorded at fair value at December 31, 2018 and December 31, 2017, respectively.
[2]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.
[3]	Includes mortgage servicing rights ("MSRs") of $149.7 million and $146.0 million at December 31, 2018 and December 31, 2017, respectively, for which the Company has elected the FVO. See Note 16 to these Consolidated Financial Statements for additional information.

BASIS OF PRESENTATION AND AC_13

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Impact on Statements of Operations) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Consumer and commercial fees		$ 568,147	$ 616,438	$ 689,839
Miscellaneous income/(loss)	[1],[2]	307,282	269,484	169,056
Total non-interest income		3,244,308	2,901,253	2,755,705
Technology, outside service, and marketing expense		590,249	581,164	644,079
Loan expense		384,899	386,468	415,267
Other administrative expenses		608,989	679,157	682,894
Total general, administrative, and other expenses		5,832,325	5,764,324	5,386,194
Income before income tax provision		1,416,935	800,935	954,478
Income tax provision		425,900	(157,040)	313,715
Net income including NCI		991,035	957,975	640,763
Balance Without Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Consumer and commercial fees		565,137	616,438	689,839
Miscellaneous income/(loss)		293,973
Total non-interest income		3,227,989	$ 2,901,253	$ 2,755,705
Technology, outside service, and marketing expense		582,614
Loan expense		395,331
Other administrative expenses		588,773
Total general, administrative, and other expenses		5,814,906
Income before income tax provision		1,418,035
Income tax provision		426,285
Net income including NCI		$ 991,750
[1]	Includes equity investment (income)/expense, net.
[2]	Includes impact of $382.3 million, $386.4 million, and $424.1 million in 2018, 2017, and 2016 of lower of cost or market adjustments on a portion of the Company's LHFS portfolio.

BASIS OF PRESENTATION AND AC_14

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Recently Adopted Accounting Standards, Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity securities from Investments AFS				$ 10,814
Equity securities in other investments		$ 10,995		$ 0
ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity securities from Investments AFS			$ (10,000)
Equity securities in other investments			$ 10,000
ASU 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of AOCI to retained earnings	$ 39,100	$ 39,100

BASIS OF PRESENTATION AND AC_15

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Cumulative Net Impact to Opening Retained Earnings) (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Jan. 01, 2017
Retained Earnings Adjustments [Line Items]
Impact to Retained earnings	$ 8,455	$ 25,707
Retained Earnings
Retained Earnings Adjustments [Line Items]
Impact to Retained earnings	47,549	$ 14,763
Retained Earnings | Subsidiary
Retained Earnings Adjustments [Line Items]
Impact to Retained earnings	5,573
Retained Earnings | Cumulative-effect adjustment upon adoption of new accounting standards
Retained Earnings Adjustments [Line Items]
Impact to Retained earnings	41,976
Retained Earnings | Adoption of ASU 2014-09, Revenue Recognition
Retained Earnings Adjustments [Line Items]
Impact to Retained earnings	3,300
Retained Earnings | Adoption of ASU 2016-1, Financial Instruments
Retained Earnings Adjustments [Line Items]
Impact to Retained earnings	(418)
Retained Earnings | Adoption of ASU 2018-02, Statement of Comprehensive Income
Retained Earnings Adjustments [Line Items]
Impact to Retained earnings	$ 39,094

BASIS OF PRESENTATION AND AC_16

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Investment Securities and Other Investments) (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)$ / shares
Accounting Policies [Abstract]
AFS transferred to HTM, carrying value	$ 1,200
AFS transferred to HTM, fair value	1,200
Unrealized holding losses	$ 29.1
FHLB Stock, par value (in usd per share) | $ / shares	$ 100

BASIS OF PRESENTATION AND AC_17

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (LHFI) (Details) - Prepayment Rate	Dec. 31, 2018	Dec. 31, 2017
Minimum
Loans and Leases Receivable Disclosure [Line Items]
LHFI, measurement input	0.057	0.061
Maximum
Loans and Leases Receivable Disclosure [Line Items]
LHFI, measurement input	0.108	0.104

BASIS OF PRESENTATION AND AC_18

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (ALLL for Loan Losses and Reserve for Unfunded Lending Commitments) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Minimum amount for commercial non-accrual loans (in excess of)	$ 1
Unallocated
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage of allowance (no more than)	5.00%

BASIS OF PRESENTATION AND AC_19

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Interest Recognition and Non-accrual Loans) (Details)	12 Months Ended
	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual status, threshold period past due	90 days
Minimum payment threshold (as a percentage)	90.00%
Credit card
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual status, threshold period past due	180 days
RICs
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, nonaccrual status, threshold period past due	60 days

BASIS OF PRESENTATION AND AC_20

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Charge-off of Uncollectible Loans) (Details)	12 Months Ended
	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, nonaccrual status, threshold period past due	90 days
Personal unsecured loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Threshold period past due for write-off of financing receivable	180 days
Credit card
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, nonaccrual status, threshold period past due	180 days
Financing receivable, nonaccrual status, threshold period after receipt of notification of death or bankruptcy	60 days
RICs
Financing Receivable, Allowance for Credit Losses [Line Items]
Threshold period past due for write-off of financing receivable	120 days
Financing receivable, nonaccrual status, threshold period past due	60 days
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, nonaccrual status, threshold period after receipt of notification of bankruptcy or fraud	60 days
Consumer | Residential mortgage and home equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Threshold period past due for write-off of financing receivable	180 days
Consumer | Other consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Threshold period past due for write-off of financing receivable	120 days
Consumer | Auto loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Threshold period past due for write-off of financing receivable	120 days

BASIS OF PRESENTATION AND AC_21

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (TDRs) (Details)	12 Months Ended
	Dec. 31, 2018payment
Financing Receivable, Modifications [Line Items]
TDR, threshold period of sustained repayment performance	6 months
Commercial
Financing Receivable, Modifications [Line Items]
TDR, threshold period of sustained repayment performance	6 months
Consumer
Financing Receivable, Modifications [Line Items]
Number of payments allowed to be deferred	1
Threshold period for deferral	6 months
Consumer | RICs
Financing Receivable, Modifications [Line Items]
Number of payments allowed to be deferred	2
Percentage of deferrals granted (more than)	90.00%
TDR, nonaccrual status, threshold period past due	60 days
Consumer | RICs | Maximum
Financing Receivable, Modifications [Line Items]
Number of payments allowed to be deferred	3
Consumer | Automobile RICs
Financing Receivable, Modifications [Line Items]
Threshold period for deferral	8 months
Consumer | Marine and RV contracts
Financing Receivable, Modifications [Line Items]
Threshold period for deferral	12 months
Consumer | RICs individually acquired
Financing Receivable, Modifications [Line Items]
Threshold period for deferral	90 days
Consumer | Residential mortgage and home equity
Financing Receivable, Modifications [Line Items]
TDR, threshold period of sustained repayment performance	6 months

BASIS OF PRESENTATION AND AC_22

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Impaired Loans) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Financing Receivable, Impaired [Line Items]
Period of time not resulting loan identified as impaired (less than)	90 days
Minimum amount for commercial non-accrual loans (in excess of)	$ 1
RICs
Financing Receivable, Impaired [Line Items]
Period of time not resulting loan identified as impaired (less than)	61 days

BASIS OF PRESENTATION AND AC_23

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Leases) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Delinquency period for operating leases (more than)	60 days
Impairment of operating leased assets	$ 0	$ 0	$ 0

BASIS OF PRESENTATION AND AC_24

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (Premises and Equipment) (Details)	12 Months Ended
	Dec. 31, 2018
Office buildings | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Office buildings | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	50 years
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	30 years
Software | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Software | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	7 years
Furniture, fixtures and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Furniture, fixtures and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Automobiles
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years

BASIS OF PRESENTATION AND AC_25

BASIS OF PRESENTATION AND ACCOUNTING POLICIES (OREO and Other Repossessed Assets) (Details)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Past due period for repossession	60 days

RECENT ACCOUNTING DEVELOPMENTS

RECENT ACCOUNTING DEVELOPMENTS (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Jan. 01, 2018	Jan. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative net increase		$ 8,455	$ 25,707
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative net increase		$ 47,549	$ 14,763
Accounting Standards Update 2016-02 | Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use assets	$ 664,100
Lease liabilities	705,600
Accounting Standards Update 2016-02 | Subsequent Event | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative net increase	$ 18,700

INVESTMENT SECURITIES (Availabl

INVESTMENT SECURITIES (Available-for-sale Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Securities:
Amortized Cost	$ 11,934,313	$ 14,635,767
Gross Unrealized Gains	6,851	11,725
Gross Unrealized Loss	(308,177)	(234,309)
Fair Value	11,632,987	14,413,183
Equity Securities:
Amortized Cost		11,428
Gross Unrealized Gains		0
Gross Unrealized Loss		(614)
Fair Value		10,814
U.S. Treasury securities
Debt Securities:
Amortized Cost	1,815,914	1,006,219
Gross Unrealized Gains	560	0
Gross Unrealized Loss	(11,729)	(8,107)
Fair Value	1,804,745	998,112
Corporate debt securities
Debt Securities:
Amortized Cost	160,164	11,639
Gross Unrealized Gains	12	21
Gross Unrealized Loss	(62)	0
Fair Value	160,114	11,660
Asset-backed securities (“ABS”)
Debt Securities:
Amortized Cost	435,464	501,575
Gross Unrealized Gains	3,517	6,901
Gross Unrealized Loss	(2,144)	(1,314)
Fair Value	436,837	507,162
State and municipal securities
Debt Securities:
Amortized Cost	16	23
Gross Unrealized Gains	0	0
Gross Unrealized Loss	0	0
Fair Value	16	23
Government National Mortgage Association (GNMA) - Residential
Debt Securities:
Amortized Cost	2,829,075	4,745,998
Gross Unrealized Gains	861	3,531
Gross Unrealized Loss	(85,675)	(62,524)
Fair Value	2,744,261	4,687,005
GNMA - Commercial
Debt Securities:
Amortized Cost	954,651	1,377,449
Gross Unrealized Gains	1,250	179
Gross Unrealized Loss	(19,515)	(19,917)
Fair Value	936,386	1,357,711
Federal Home Loan Mortgage Corporation (FHLMC) and Federal National Mortgage Association (FNMA) - Residential
Debt Securities:
Amortized Cost	5,687,221	6,958,433
Gross Unrealized Gains	267	1,093
Gross Unrealized Loss	(188,515)	(141,393)
Fair Value	5,498,973	6,818,133
FHLMC and FNMA - Commercial
Debt Securities:
Amortized Cost	51,808	23,003
Gross Unrealized Gains	384	0
Gross Unrealized Loss	(537)	(440)
Fair Value	$ 51,655	$ 22,563

INVESTMENT SECURITIES (Held-to-

INVESTMENT SECURITIES (Held-to-maturity Debt Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 2,750,680	$ 1,799,808
Gross Unrealized Gains	3,232	1,047
Gross Unrealized Loss	(77,863)	(26,917)
Fair Value	2,676,049	1,773,938
GNMA - Residential
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,718,687	1,447,669
Gross Unrealized Gains	1,806	722
Gross Unrealized Loss	(54,184)	(26,150)
Fair Value	1,666,309	1,422,241
GNMA - Commercial
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,031,993	352,139
Gross Unrealized Gains	1,426	325
Gross Unrealized Loss	(23,679)	(767)
Fair Value	$ 1,009,740	$ 351,697

INVESTMENT SECURITIES (Securiti

INVESTMENT SECURITIES (Securities Pledged as Collateral) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged as collateral, fair value	$ 6,600	$ 5,900
Collateral with Federal Reserve Bank
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged as collateral, fair value	3,000	3,000
Public fund deposits
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged as collateral, fair value	2,700	2,300
Repurchase agreements, hedging activities and recourse on loan sales
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged as collateral, fair value	78	243.8
Deposits with Clearing Organizations
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged as collateral, fair value	423.3	0
Overnight customer deposits
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged as collateral, fair value	$ 415.1	$ 387.9

INVESTMENT SECURITIES (Other In

INVESTMENT SECURITIES (Other Investments) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
AFS investment securities transferred to HTM investment securities	$ 1,167,189,000	$ 0	$ 0
Accrued investment income receivable	$ 40,200,000	47,000,000
FHLB Stock, par value (in usd per share)	$ 100
Purchases of FHLB stock	$ 267,500,000
FHLB stock redeemed	153,300,000
Gain (loss) on redemption of FHLB stock	0
Purchase of FRB stock	200,000
Equity securities	$ 10,995,000	$ 0

INVESTMENT SECURITIES (Contract

INVESTMENT SECURITIES (Contractual Maturity of Available-for-sale Debt Securities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Total fair value
Due Within One Year	$ 1,147,438
Due After 1 Within 5 Years	1,160,685
Due After 5 Within 10 Years	302,749
Due After 10 Years/No Maturity	9,022,115
Total	$ 11,632,987	$ 14,413,183
Weighted Average Yield
Due Within One Year (as a percent)	2.52%
Due After 1 Within 5 Years (as a percent)	1.90%
Due After 5 Years Within 10 Years (as a percent)	2.24%
Due After 10 Years/No Maturity (as a percent)	2.59%
Total (as a percent)	2.50%
Total amortized cost
Due within one year	$ 1,145,692
Due after 1 year but within 5 years	1,170,312
Due after 5 years but within 10 years	309,158
Due after 10 years	9,309,151
Amortized Cost	11,934,313	14,635,767
U.S Treasury and government agency
Total fair value
Due Within One Year	735,379
Due After 1 Within 5 Years	1,069,366
Due After 5 Within 10 Years	0
Due After 10 Years/No Maturity	0
Total	$ 1,804,745	998,112
Weighted Average Yield
Total (as a percent)	1.78%
Total amortized cost
Amortized Cost	$ 1,815,914	1,006,219
Corporate debt securities
Total fair value
Due Within One Year	160,101
Due After 1 Within 5 Years	0
Due After 5 Within 10 Years	13
Due After 10 Years/No Maturity	0
Total	$ 160,114	11,660
Weighted Average Yield
Total (as a percent)	3.33%
Total amortized cost
Amortized Cost	$ 160,164	11,639
ABS
Total fair value
Due Within One Year	251,958
Due After 1 Within 5 Years	75,225
Due After 5 Within 10 Years	17,681
Due After 10 Years/No Maturity	91,973
Total	$ 436,837	507,162
Weighted Average Yield
Total (as a percent)	3.70%
Total amortized cost
Amortized Cost	$ 435,464	501,575
State and municipal securities
Total fair value
Due Within One Year	0
Due After 1 Within 5 Years	16
Due After 5 Within 10 Years	0
Due After 10 Years/No Maturity	0
Total	$ 16	23
Weighted Average Yield
Total (as a percent)	7.49%
Total amortized cost
Amortized Cost	$ 16	23
GNMA - Residential
Total fair value
Due Within One Year	0
Due After 1 Within 5 Years	2,625
Due After 5 Within 10 Years	69,463
Due After 10 Years/No Maturity	2,672,173
Total	$ 2,744,261	4,687,005
Weighted Average Yield
Total (as a percent)	2.63%
Total amortized cost
Amortized Cost	$ 2,829,075	4,745,998
GNMA - Commercial
Total fair value
Due Within One Year	0
Due After 1 Within 5 Years	0
Due After 5 Within 10 Years	0
Due After 10 Years/No Maturity	936,386
Total	$ 936,386	1,357,711
Weighted Average Yield
Total (as a percent)	2.74%
Total amortized cost
Amortized Cost	$ 954,651	1,377,449
FHLMC and FNMA - Residential
Total fair value
Due Within One Year	0
Due After 1 Within 5 Years	6,089
Due After 5 Within 10 Years	191,423
Due After 10 Years/No Maturity	5,301,461
Total	$ 5,498,973	6,818,133
Weighted Average Yield
Total (as a percent)	2.51%
Total amortized cost
Amortized Cost	$ 5,687,221	6,958,433
FHLMC and FNMA - Commercial
Total fair value
Due Within One Year	0
Due After 1 Within 5 Years	7,364
Due After 5 Within 10 Years	24,169
Due After 10 Years/No Maturity	20,122
Total	$ 51,655	22,563
Weighted Average Yield
Total (as a percent)	2.98%
Total amortized cost
Amortized Cost	$ 51,808	$ 23,003

INVESTMENT SECURITIES (Contra_2

INVESTMENT SECURITIES (Contractual Maturity of Held-to-maturity Debt Securities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Total fair value
Due Within One Year	$ 0
Due After 1 Within 5 Years	0
Due After 5 Within 10 Years	0
Due After 10 Years/No Maturity	2,676,049
Total	$ 2,676,049	$ 1,773,938
Weighted average yield
Due Within One Year (as a percent)	0.00%
Due After 1 Within 5 Years (as a percent)	0.00%
Due After 5 Within 10 Years (as a percent)	0.00%
Due After 10 Years/No Maturity (as a percent)	2.58%
Weighted Average Yield (as a percent)	2.58%
Total amortized cost
Due Within One Year	$ 0
Due After 1 Within 5 Years	0
Due After 5 Within 10 Years	0
Due After 10 Years/No Maturity	2,750,680
Amortized Cost	2,750,680	1,799,808
GNMA - Residential
Total fair value
Due Within One Year	0
Due After 1 Within 5 Years	0
Due After 5 Within 10 Years	0
Due After 10 Years/No Maturity	1,666,309
Total	$ 1,666,309	1,422,241
Weighted average yield
Weighted Average Yield (as a percent)	2.56%
Total amortized cost
Amortized Cost	$ 1,718,687	1,447,669
GNMA - Commercial
Total fair value
Due Within One Year	0
Due After 1 Within 5 Years	0
Due After 5 Within 10 Years	0
Due After 10 Years/No Maturity	1,009,740
Total	$ 1,009,740	351,697
Weighted average yield
Weighted Average Yield (as a percent)	2.61%
Total amortized cost
Amortized Cost	$ 1,031,993	$ 352,139

INVESTMENT SECURITIES (Gross Un

INVESTMENT SECURITIES (Gross Unrealized Loss and Fair Value of Available-for-sale Debt Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value
Less than 12 months	$ 1,011,758	$ 6,702,254
12 months or longer	9,394,105	5,982,268
Unrealized Losses
Less than 12 months	(11,350)	(61,328)
12 months or longer	(296,827)	(172,981)
U.S. Treasury securities
Fair Value
Less than 12 months	288,660	998,112
12 months or longer	914,212	0
Unrealized Losses
Less than 12 months	(315)	(8,107)
12 months or longer	(11,414)	0
Corporate debt securities
Fair Value
Less than 12 months	152,247	0
12 months or longer	13	0
Unrealized Losses
Less than 12 months	(62)	0
12 months or longer	0	0
ABS
Fair Value
Less than 12 months	31,888	8,013
12 months or longer	77,766	103,559
Unrealized Losses
Less than 12 months	(249)	(125)
12 months or longer	(1,895)	(1,189)
Equity securities
Equity Securities:
Fair Value, Less than 12 months		335
Unrealized Losses, Less than 12 months		(2)
Fair Value, 12 months or longer		10,398
Unrealized Losses, 12 months or longer		(612)
GNMA - Residential
Fair Value
Less than 12 months	102,418	1,236,716
12 months or longer	2,521,278	2,583,955
Unrealized Losses
Less than 12 months	(2,014)	(8,600)
12 months or longer	(83,661)	(53,924)
GNMA - Commercial
Fair Value
Less than 12 months	199,495	1,022,452
12 months or longer	622,989	251,209
Unrealized Losses
Less than 12 months	(2,982)	(11,492)
12 months or longer	(16,533)	(8,425)
FHLMC and FNMA - Residential
Fair Value
Less than 12 months	237,050	3,429,678
12 months or longer	5,236,028	3,017,533
Unrealized Losses
Less than 12 months	(5,728)	(32,899)
12 months or longer	(182,787)	(108,494)
FHLMC and FNMA - Commercial
Fair Value
Less than 12 months	0	6,948
12 months or longer	21,819	15,614
Unrealized Losses
Less than 12 months	0	(103)
12 months or longer	$ (537)	$ (337)

INVESTMENT SECURITIES (Gross _2

INVESTMENT SECURITIES (Gross Unrealized Loss and Fair Value of Held-to-maturity Debt Securities) (Details) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value
Less than 12 months	$ 426,823	$ 553,273
12 months or longer	1,925,401	739,612
Unrealized Losses
Less than 12 months	(10,382)	(7,186)
12 months or longer	(67,481)	(19,731)
GNMA - Residential
Fair Value
Less than 12 months	205,573	434,322
12 months or longer	1,295,554	739,612
Unrealized Losses
Less than 12 months	(4,810)	(6,419)
12 months or longer	(49,374)	(19,731)
GNMA - Commercial
Fair Value
Less than 12 months	221,250	118,951
12 months or longer	629,847	0
Unrealized Losses
Less than 12 months	(5,572)	(767)
12 months or longer	$ (18,107)	$ 0

INVESTMENT SECURITIES (Other-Th

INVESTMENT SECURITIES (Other-Than-Temporary Impairment) (Details)	Dec. 31, 2018security
Investments, Debt and Equity Securities [Abstract]
Number of securities in unrealized loss position	975

INVESTMENT SECURITIES (Gains (L

INVESTMENT SECURITIES (Gains (Losses) and Proceeds on Sale of Investment Securities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds from the sales of AFS securities	$ 1,262,409	$ 3,256,378	$ 6,755,299
Gross realized gains	5,517	22,224	61,344
Gross realized losses	(12,234)	(24,668)	(3,797)
OTTI	0	0	(44)
Net (losses)/gains recognized in earnings	(6,717)	(2,444)	57,503
Net realized gains/(losses) on trading securities	$ (1,400)	$ (4,200)	$ (300)

INVESTMENT SECURITIES (Schedule

INVESTMENT SECURITIES (Schedule of Other Investments) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
FHLB of Pittsburgh and FRB stock	$ 631,239	$ 516,693
Low Income Housing Tax Credit investments (LIHTC)	163,113	88,170
Equity securities not held for trading	10,995	0
CDs with a maturity greater than 90 days	0	54,000
Trading securities	10	1
Total	$ 805,357	$ 658,864

LOANS AND ALLOWANCE FOR CREDI_3

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Jan. 01, 2018
Loans Receivable [Line Items]
Loans pledged as collateral		$ 49,500,000		$ 50,900,000
Loans held-for-sale (LHFS)	[1]	1,283,278		2,522,486
Accrued interest receivable		566,602		577,585
Loans and leases receivable		87,045,868	[2],[3]	80,790,681	[2],[3]	$ 80,796,195
Financing receivable		$ 88,329,146		83,313,167
Percentage of payment needed on past due loans for qualification		90.00%
Minimum amount for commercial non-accrual loans (in excess of)		$ 1,000
Troubled debt restructurings		$ 5,922,352		6,842,987
TDR, threshold period of sustained repayment performance		6 months
TDR, threshold period loan needed to remain current prior to modification to remain on accrual status		6 months
TDRs, number of days past due after modification considered to have subsequently defaulted		90 days
Performing
Loans Receivable [Line Items]
Interest income		$ 761,000		795,400
Troubled debt restructurings		5,014,224		5,860,119
SC | Chrysler Capital Loans
Loans Receivable [Line Items]
Loans purchased/originated		$ 7,900,000		$ 6,700,000
SC | Chrysler Capital Loans | Accounts Receivable | Credit Concentration Risk
Loans Receivable [Line Items]
Percentage of loan origination		46.00%		47.00%
Loans receivable
Loans Receivable [Line Items]
Accrued interest receivable		$ 524,000		$ 529,900
Mortgage warehouse facilities
Loans Receivable [Line Items]
Loans and leases receivable		499,200
Proceeds from sale of receivables		515,800
Gain from sale of receivables		16,700
Retail installment contracts and auto loans | SC | Chrysler Capital Loans
Loans Receivable [Line Items]
Financing receivable		$ 9,000,000		$ 8,200,000
Retail installment contracts and auto loans | SC | Chrysler Capital Loans | Accounts Receivable | Credit Concentration Risk
Loans Receivable [Line Items]
Percentage of loan origination		36.00%		37.00%
Retail installment contracts
Loans Receivable [Line Items]
TDRs, number of days past due after modification considered to have subsequently defaulted		120 days
Consumer
Loans Receivable [Line Items]
Loans and leases receivable		$ 46,664,110		$ 41,623,971
Consumer | Personal unsecured loans
Loans Receivable [Line Items]
LHFS		1,100,000		1,100,000
Financing receivable		2,600,465		2,347,767
Consumer | Retail installment contracts and auto loans
Loans Receivable [Line Items]
Loans and leases receivable		$ 1,617,699		$ 18,142
[1]	Includes $209.5 million and $197.7 million of loans recorded at the fair value option ("FVO") at December 31, 2018 and December 31, 2017, respectively.
[2]	LHFI includes $126.3 million and $186.5 million of loans recorded at fair value at December 31, 2018 and December 31, 2017, respectively.
[3]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.

LOANS AND ALLOWANCE FOR CREDI_4

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Loan and Lease Portfolio Composition) (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017
Loans Receivable [Line Items]
Total loans held for investment	$ 87,045,868	[1],[2]	$ 80,796,195	$ 80,790,681	[1],[2]
Loans held for investment with fixed rate of interest	56,696,491			50,703,619
Loans held for investment with variable rate of interest	$ 30,349,377			$ 30,087,062
Loans held for investment, percent of total loans	100.00%			100.00%
Loans held for investment with fixed rate of interest, percent of total loans	65.10%			62.80%
Loans held for investment with variable rate of interest, percent of total loans	34.90%			37.20%
Net increase in loan balances	$ 1,400,000			$ 1,300,000
Commercial
Loans Receivable [Line Items]
Total loans held for investment	$ 40,381,758			$ 39,166,710
Loans held for investment, percent of total loans	46.40%			48.40%
Commercial | Commercial real estate (CRE) loans
Loans Receivable [Line Items]
Total loans held for investment	$ 8,704,481			$ 9,279,225
Loans held for investment, percent of total loans	10.00%			11.50%
Commercial | Commercial and industrial (C&I) loans
Loans Receivable [Line Items]
Total loans held for investment	$ 15,738,158			$ 14,438,311
Loans held for investment, percent of total loans	18.10%			17.90%
Commercial | Multifamily loans
Loans Receivable [Line Items]
Total loans held for investment	$ 8,309,115			$ 8,274,435
Loans held for investment, percent of total loans	9.50%			10.10%
Commercial | Other commercial
Loans Receivable [Line Items]
Total loans held for investment	$ 7,630,004			$ 7,174,739
Loans held for investment, percent of total loans	8.80%			8.90%
Consumer
Loans Receivable [Line Items]
Total loans held for investment	$ 46,664,110			$ 41,623,971
Loans held for investment, percent of total loans	53.60%			51.60%
Consumer | RICs and auto loans - originated
Loans Receivable [Line Items]
Total loans held for investment	$ 28,532,085			$ 23,131,253
Consumer loans secured by real estate
Loans Receivable [Line Items]
Total loans held for investment	$ 15,350,132			$ 14,754,498
Loans held for investment, percent of total loans	17.70%			18.30%
Consumer loans secured by real estate | Residential mortgages
Loans Receivable [Line Items]
Total loans held for investment	$ 9,884,462			$ 8,846,765
Loans held for investment, percent of total loans	11.40%			11.00%
Consumer loans secured by real estate | Home equity loans and lines of credit
Loans Receivable [Line Items]
Total loans held for investment	$ 5,465,670			$ 5,907,733
Loans held for investment, percent of total loans	6.30%			7.30%
Consumer loans not secured by real estate | RICs and auto loans - originated
Loans Receivable [Line Items]
Total loans held for investment	$ 28,532,085			$ 23,131,253
Loans held for investment, percent of total loans	32.80%			28.60%
Consumer loans not secured by real estate | RICs and auto loans - purchased
Loans Receivable [Line Items]
Total loans held for investment	$ 803,135			$ 1,834,868
Loans held for investment, percent of total loans	0.90%			2.30%
Consumer loans not secured by real estate | Personal unsecured loans
Loans Receivable [Line Items]
Total loans held for investment	$ 1,531,708			$ 1,285,677
Loans held for investment, percent of total loans	1.80%			1.60%
Consumer loans not secured by real estate | Other consumer
Loans Receivable [Line Items]
Total loans held for investment	$ 447,050			$ 617,675
Loans held for investment, percent of total loans	0.40%			0.80%
[1]	LHFI includes $126.3 million and $186.5 million of loans recorded at fair value at December 31, 2018 and December 31, 2017, respectively.
[2]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.

LOANS AND ALLOWANCE FOR CREDI_5

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Retail Installment Contracts and Auto Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017
Loans Receivable [Line Items]
Total loans held for investment	$ 87,045,868	[1],[2]	$ 80,796,195	$ 80,790,681	[1],[2]
Consumer
Loans Receivable [Line Items]
Total loans held for investment	46,664,110			41,623,971
Purchase marks, FVO	2,100			5,500
Consumer | Retail installment contracts and auto loans
Loans Receivable [Line Items]
Total loans held for investment	29,335,220			24,966,121
Consumer | RICs - Purchased HFI
Loans Receivable [Line Items]
Unpaid principal balance (UPB)	844,582			1,929,548
UPB, FVO	9,678			24,926
Total UPB	854,260			1,954,474
Purchase marks	(51,125)			(119,606)
Total loans held for investment	803,135			1,834,868
Consumer | RICs - Originated HFI
Loans Receivable [Line Items]
Total UPB	27,049,875			23,423,031
Net discount	(135,489)			(309,920)
Total loans held for investment	26,914,386			23,113,111
Consumer | Auto Loans
Loans Receivable [Line Items]
Total loans held for investment	1,617,699			18,142
Consumer | RICs - Originated
Loans Receivable [Line Items]
Total loans held for investment	$ 28,532,085			$ 23,131,253
[1]	LHFI includes $126.3 million and $186.5 million of loans recorded at fair value at December 31, 2018 and December 31, 2017, respectively.
[2]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.

LOANS AND ALLOWANCE FOR CREDI_6

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Rollforward of Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for Loan Losses [Roll Forward]
ALLL, beginning of period	$ 3,994,887	$ 3,814,464	$ 3,246,145
Provision for loan and lease losses	2,352,793	2,770,556	3,004,620
Other		5,639
Charge-offs	(5,083,297)	(5,035,385)	(4,965,534)
Recoveries	2,632,747	2,439,613	2,529,233
Charge-offs, net of recoveries	(2,450,550)	(2,595,772)	(2,436,301)
ALLL, end of period	3,897,130	3,994,887	3,814,464
Reserve for Unfunded Lending Commitments Roll Forward [Roll Forward]
Reserve for unfunded lending commitments, beginning of period	109,111	122,418	149,021
(Release of) / Provision for reserve for unfunded lending commitments	(12,895)	(10,612)	(24,895)
Loss on unfunded lending commitments	(716)	(2,695)	(1,708)
Reserve for unfunded lending commitments, end of period	95,500	109,111	122,418
Total ACL, end of period	3,992,630	4,103,998	3,936,882
Ending balance, individually evaluated for impairment	1,551,294	1,926,966	1,618,971
Ending balance, collectively evaluated for impairment	2,345,836	2,067,921	2,195,493
Financing receivables:
Ending balance	88,329,146	83,313,167	88,406,093
Ending balance, evaluated under the FVO or lower of cost or fair value	1,393,476	2,569,332	2,603,660
Ending balance, individually evaluated for impairment	6,224,029	7,246,534	6,461,752
Ending balance, collectively evaluated for impairment	80,711,641	73,497,301	79,340,681
Commercial
Allowance for Loan Losses [Roll Forward]
ALLL, beginning of period	443,796	449,837	456,812
Provision for loan and lease losses	45,897	99,606	152,112
Other		356
Charge-offs	(108,750)	(144,002)	(245,399)
Recoveries	60,140	37,999	86,312
Charge-offs, net of recoveries	(48,610)	(106,003)	(159,087)
ALLL, end of period	441,083	443,796	449,837
Reserve for Unfunded Lending Commitments Roll Forward [Roll Forward]
Reserve for unfunded lending commitments, beginning of period	103,835	116,866	143,461
(Release of) / Provision for reserve for unfunded lending commitments	(13,647)	(10,336)	(24,887)
Loss on unfunded lending commitments	(716)	(2,695)	(1,708)
Reserve for unfunded lending commitments, end of period	89,472	103,835	116,866
Total ACL, end of period	530,555	547,631	566,703
Ending balance, individually evaluated for impairment	94,120	102,326	98,596
Ending balance, collectively evaluated for impairment	346,963	341,470	351,241
Financing receivables:
Ending balance	40,381,758	39,315,888	44,561,193
Ending balance, evaluated under the FVO or lower of cost or fair value	0	149,177	121,065
Ending balance, individually evaluated for impairment	444,031	593,585	666,386
Ending balance, collectively evaluated for impairment	39,937,727	38,573,126	43,773,742
Consumer
Allowance for Loan Losses [Roll Forward]
ALLL, beginning of period	3,504,068	3,317,604	2,742,088
Provision for loan and lease losses	2,306,896	2,670,950	2,852,730
Other		5,283
Charge-offs	(4,974,547)	(4,891,383)	(4,720,135)
Recoveries	2,572,607	2,401,614	2,442,921
Charge-offs, net of recoveries	(2,401,940)	(2,489,769)	(2,277,214)
ALLL, end of period	3,409,024	3,504,068	3,317,604
Reserve for Unfunded Lending Commitments Roll Forward [Roll Forward]
Reserve for unfunded lending commitments, beginning of period	5,276	5,552	5,560
(Release of) / Provision for reserve for unfunded lending commitments	752	(276)	(8)
Loss on unfunded lending commitments	0	0	0
Reserve for unfunded lending commitments, end of period	6,028	5,276	5,552
Total ACL, end of period	3,415,052	3,509,344	3,323,156
Ending balance, individually evaluated for impairment	1,457,174	1,824,640	1,520,375
Ending balance, collectively evaluated for impairment	1,951,850	1,679,428	1,797,229
Financing receivables:
Ending balance	47,947,388	43,997,279	43,844,900
Ending balance, evaluated under the FVO or lower of cost or fair value	1,393,476	2,420,155	2,482,595
Ending balance, individually evaluated for impairment	5,779,998	6,652,949	5,795,366
Ending balance, collectively evaluated for impairment	40,773,914	34,924,175	35,566,939
Consumer | Total
Allowance for Loan Losses [Roll Forward]
ALLL, beginning of period	3,246,522	3,097,219	2,482,796
Provision for loan and lease losses	2,224,604	2,513,858	2,769,252
Charge-offs	(4,827,652)	(4,735,147)	(4,564,035)
Recoveries	2,542,844	2,370,592	2,409,206
Charge-offs, net of recoveries	(2,284,808)	(2,364,555)	(2,154,829)
ALLL, end of period	3,186,318	3,246,522	3,097,219
Consumer | Purchased
Allowance for Loan Losses [Roll Forward]
ALLL, beginning of period	384,167	559,092	590,807
Provision for loan and lease losses	(53,551)	181,698	309,664
Charge-offs	(319,069)	(606,898)	(1,024,882)
Recoveries	182,195	250,275	683,503
Charge-offs, net of recoveries	(136,874)	(356,623)	(341,379)
ALLL, end of period	193,742	384,167	559,092
Consumer | Originated
Allowance for Loan Losses [Roll Forward]
ALLL, beginning of period	2,862,355	2,538,127	1,891,989
Provision for loan and lease losses	2,278,155	2,332,160	2,459,588
Charge-offs	(4,508,583)	(4,128,249)	(3,539,153)
Recoveries	2,360,649	2,120,317	1,725,703
Charge-offs, net of recoveries	(2,147,934)	(2,007,932)	(1,813,450)
ALLL, end of period	2,992,576	2,862,355	2,538,127
Unallocated
Allowance for Loan Losses [Roll Forward]
ALLL, beginning of period	47,023	47,023	47,245
Provision for loan and lease losses	0	0	(222)
Other		0
Charge-offs	0	0	0
Recoveries	0	0	0
Charge-offs, net of recoveries	0	0	0
ALLL, end of period	47,023	47,023	47,023
Reserve for Unfunded Lending Commitments Roll Forward [Roll Forward]
Reserve for unfunded lending commitments, beginning of period	0	0	0
(Release of) / Provision for reserve for unfunded lending commitments	0	0	0
Loss on unfunded lending commitments	0	0	0
Reserve for unfunded lending commitments, end of period	0	0	0
Total ACL, end of period	47,023	47,023	47,023
Ending balance, individually evaluated for impairment	0	0	0
Ending balance, collectively evaluated for impairment	47,023	47,023	47,023
Financing receivables:
Ending balance	0	0	0
Ending balance, evaluated under the FVO or lower of cost or fair value	0	0
Ending balance, individually evaluated for impairment	0	0	0
Ending balance, collectively evaluated for impairment	$ 0	$ 0	$ 0

LOANS AND ALLOWANCE FOR CREDI_7

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Non-accrual Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	$ 2,255,437	$ 2,390,893
Foreclosed and other repossessed assets	225,890	212,882
Nonperforming
Financing Receivable, Recorded Investment, Past Due [Line Items]
OREO	107,868	130,777
Repossessed vehicles	224,046	210,692
Foreclosed and other repossessed assets	1,844	2,190
Total OREO and other repossessed assets	333,758	343,659
Total non-performing assets	2,589,195	2,734,552
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	364,698	464,533
Commercial | CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	88,500	139,236
Commercial | C&I
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	189,827	230,481
Commercial | Multifamily
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	13,530	11,348
Commercial | Other commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	72,841	83,468
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	1,890,739	1,926,360
Consumer | Residential mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	216,815	265,436
Consumer | Home equity loans and lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	115,813	134,162
Consumer | RICs and auto loans - originated
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	1,455,406	1,257,122
Consumer | RICs and auto loans - purchased
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	89,916	256,617
Consumer | Personal unsecured loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	3,602	2,366
Consumer | Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	$ 9,187	$ 10,657

LOANS AND ALLOWANCE FOR CREDI_8

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Age Analysis of Past Due Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 5,714,660	$ 5,547,989
Current	82,614,486	77,765,178
Total Financing Receivables	88,329,146	83,313,167
Recorded Investment Greater than 90 Days and Accruing	98,979	96,461
30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,772,117	4,545,634
90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	942,543	1,002,355
Commercial | CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	69,496	125,698
Current	8,634,985	9,153,527
Total Financing Receivables	8,704,481	9,279,225
Recorded Investment Greater than 90 Days and Accruing	0	0
Commercial | CRE | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	20,179	25,174
Commercial | CRE | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	49,317	100,524
Commercial | C&I
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	135,705	125,508
Current	15,602,453	14,461,981
Total Financing Receivables	15,738,158	14,587,489
Recorded Investment Greater than 90 Days and Accruing	0	0
LHFS		149,200
Commercial | C&I | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	61,495	49,584
Commercial | C&I | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	74,210	75,924
Commercial | Multifamily
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,652	6,552
Current	8,303,463	8,267,883
Total Financing Receivables	8,309,115	8,274,435
Recorded Investment Greater than 90 Days and Accruing	0	0
Commercial | Multifamily | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,078	3,562
Commercial | Multifamily | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,574	2,990
Commercial | Other commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	21,411	37,380
Current	7,608,593	7,137,359
Total Financing Receivables	7,630,004	7,174,739
Recorded Investment Greater than 90 Days and Accruing	6	0
Commercial | Other commercial | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	16,081	34,021
Commercial | Other commercial | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,330	3,359
Consumer | Residential mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	357,487	428,335
Current	9,741,496	8,628,600
Total Financing Receivables	10,098,983	9,056,935
Recorded Investment Greater than 90 Days and Accruing	0	0
LHFS	214,500	210,200
Consumer | Residential mortgages | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	186,222	217,558
Consumer | Residential mortgages | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	171,265	210,777
Consumer | Home equity loans and lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	138,367	142,894
Current	5,327,303	5,764,839
Total Financing Receivables	5,465,670	5,907,733
Recorded Investment Greater than 90 Days and Accruing	0	0
Consumer | Home equity loans and lines of credit | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	58,507	50,919
Consumer | Home equity loans and lines of credit | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	79,860	91,975
Consumer | RICs and auto loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
LHFS		1,100,000
Consumer | RICs and auto loans - originated
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,495,834	3,959,324
Current	24,036,251	20,272,977
Total Financing Receivables	28,532,085	24,232,301
Recorded Investment Greater than 90 Days and Accruing	0	0
Consumer | RICs and auto loans - originated | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,076,015	3,602,308
Consumer | RICs and auto loans - originated | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	419,819	357,016
Consumer | RICs and auto loans - purchased
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	264,527	492,751
Current	538,608	1,342,117
Total Financing Receivables	803,135	1,834,868
Recorded Investment Greater than 90 Days and Accruing	0	0
Consumer | RICs and auto loans - purchased | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	242,604	452,235
Consumer | RICs and auto loans - purchased | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	21,923	40,516
Consumer | Personal unsecured loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	196,138	190,448
Current	2,404,327	2,157,319
Total Financing Receivables	2,600,465	2,347,767
Recorded Investment Greater than 90 Days and Accruing	98,973	96,461
LHFS	1,100,000	1,100,000
Consumer | Personal unsecured loans | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	93,675	85,394
Consumer | Personal unsecured loans | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	102,463	105,054
Consumer | Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	30,043	39,099
Current	417,007	578,576
Total Financing Receivables	447,050	617,675
Recorded Investment Greater than 90 Days and Accruing	0	0
Consumer | Other consumer | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	16,261	24,879
Consumer | Other consumer | 90 Days or Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 13,782	$ 14,220

LOANS AND ALLOWANCE FOR CREDI_9

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Impaired Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired financing receivable, recorded investment	$ 6,216,533	$ 7,199,999
Impaired financing receivable, UPB	6,475,327	7,636,978
Impaired financing receivable, related specific reserves	1,551,294	1,926,966
Impaired financing receivables, average recorded investment	6,708,272	6,783,634
Commercial
Financing Receivable, Impaired [Line Items]
Impaired financing receivable, recorded investment	429,476	577,963
Impaired financing receivable, UPB	476,078	685,000
Impaired financing receivable, related specific reserves	94,120	102,326
Impaired financing receivables, average recorded investment	503,722	587,630
Commercial | CRE
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	79,056	126,406
Impaired financing receivable with related allowance recorded, recorded investment	58,861	97,680
Impaired financing receivable with no related allowance recorded, UPB	88,960	174,842
Impaired financing receivable with related allowance recorded, UPB	66,645	117,730
Impaired financing receivable, related specific reserves	6,449	18,523
Impaired financing receivable with no related allowance recorded, average recorded investment	102,731	139,063
Impaired financing receivable with related allowance recorded, average recorded investment	78,271	118,492
Commercial | C&I
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	25,859	82,541
Impaired financing receivable with related allowance recorded, recorded investment	180,178	176,769
Impaired financing receivable with no related allowance recorded, UPB	36,067	96,324
Impaired financing receivable with related allowance recorded, UPB	197,937	200,382
Impaired financing receivable, related specific reserves	66,329	59,696
Impaired financing receivable with no related allowance recorded, average recorded investment	54,200	75,338
Impaired financing receivable with related allowance recorded, average recorded investment	178,474	196,674
Commercial | Multifamily
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	18,260	9,887
Impaired financing receivable with related allowance recorded, recorded investment	0	6,201
Impaired financing receivable with no related allowance recorded, UPB	19,175	10,838
Impaired financing receivable with related allowance recorded, UPB	0	6,201
Impaired financing receivable, related specific reserves	0	313
Impaired financing receivable with no related allowance recorded, average recorded investment	14,074	10,129
Impaired financing receivable with related allowance recorded, average recorded investment	3,101	4,566
Commercial | Other commercial
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	7,348	767
Impaired financing receivable with related allowance recorded, recorded investment	59,914	77,712
Impaired financing receivable with no related allowance recorded, UPB	7,380	911
Impaired financing receivable with related allowance recorded, UPB	59,914	77,772
Impaired financing receivable, related specific reserves	21,342	23,794
Impaired financing receivable with no related allowance recorded, average recorded investment	4,058	903
Impaired financing receivable with related allowance recorded, average recorded investment	68,813	42,465
Consumer
Financing Receivable, Impaired [Line Items]
Impaired financing receivable, recorded investment	5,787,057	6,622,036
Impaired financing receivable, UPB	5,999,249	6,951,978
Impaired financing receivable, related specific reserves	1,457,174	1,824,640
Impaired financing receivables, average recorded investment	6,204,550	6,196,004
Consumer | Residential mortgages
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	144,899	107,320
Impaired financing receivable with related allowance recorded, recorded investment	253,965	322,092
Impaired financing receivable with no related allowance recorded, UPB	201,905	128,458
Impaired financing receivable with related allowance recorded, UPB	289,447	392,833
Impaired financing receivable, related specific reserves	29,156	40,963
Impaired financing receivable with no related allowance recorded, average recorded investment	126,110	141,195
Impaired financing receivable with related allowance recorded, average recorded investment	288,029	303,361
Consumer | Home equity loans and lines of credit
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	46,069	52,397
Impaired financing receivable with related allowance recorded, recorded investment	60,540	64,827
Impaired financing receivable with no related allowance recorded, UPB	48,021	54,421
Impaired financing receivable with related allowance recorded, UPB	71,475	77,435
Impaired financing receivable, related specific reserves	4,272	4,770
Impaired financing receivable with no related allowance recorded, average recorded investment	49,233	50,635
Impaired financing receivable with related allowance recorded, average recorded investment	62,684	57,345
Consumer | RICs and auto loans - originated
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	1
Impaired financing receivable with related allowance recorded, recorded investment	4,630,614	4,855,026
Impaired financing receivable with no related allowance recorded, UPB	1
Impaired financing receivable with related allowance recorded, UPB	4,652,013	4,914,656
Impaired financing receivable, related specific reserves	1,231,164	1,422,834
Impaired financing receivable with no related allowance recorded, average recorded investment	1
Impaired financing receivable with related allowance recorded, average recorded investment	4,742,820	4,063,171
Consumer | RICs and auto loans - purchased
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	7,061	16,192
Impaired financing receivable with related allowance recorded, recorded investment	614,071	1,166,476
Impaired financing receivable with no related allowance recorded, UPB	9,071	20,783
Impaired financing receivable with related allowance recorded, UPB	694,000	1,318,306
Impaired financing receivable, related specific reserves	184,545	347,663
Impaired financing receivable with no related allowance recorded, average recorded investment	11,627	25,283
Impaired financing receivable with related allowance recorded, average recorded investment	890,274	1,511,212
Consumer | Personal unsecured loans
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	4	80
Impaired financing receivable with related allowance recorded, recorded investment	16,182	16,477
Impaired financing receivable with no related allowance recorded, UPB	4	80
Impaired financing receivable with related allowance recorded, UPB	16,446	16,661
Impaired financing receivable, related specific reserves	6,875	6,259
Impaired financing receivable with no related allowance recorded, average recorded investment	42	345
Impaired financing receivable with related allowance recorded, average recorded investment	16,330	16,668
Consumer | Other consumer
Financing Receivable, Impaired [Line Items]
Impaired financing receivable with no related allowance recorded, recorded investment	3,591	9,557
Impaired financing receivable with related allowance recorded, recorded investment	10,060	11,592
Impaired financing receivable with no related allowance recorded, UPB	3,591	13,055
Impaired financing receivable with related allowance recorded, UPB	13,275	15,290
Impaired financing receivable, related specific reserves	1,162	2,151
Impaired financing receivable with no related allowance recorded, average recorded investment	6,574	14,446
Impaired financing receivable with related allowance recorded, average recorded investment	$ 10,826	$ 12,343

LOANS AND ALLOWANCE FOR CRED_10

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Lending Asset Quality Indicators) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	$ 40,381,758	$ 39,315,888
Pass
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	37,755,765	36,641,228
Special mention
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	1,672,376	1,722,400
Substandard
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	850,572	783,065
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	103,045	169,195
CRE
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	8,704,481	9,279,225
CRE | Pass
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	7,698,373	8,281,626
CRE | Special mention
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	628,097	645,835
CRE | Substandard
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	373,356	317,510
CRE | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	4,655	34,254
C&I
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	15,738,158	14,587,489
C&I | Pass
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	14,518,566	13,176,248
C&I | Special mention
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	772,704	941,683
C&I | Substandard
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	408,515	398,325
C&I | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	38,373	71,233
Multifamily
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	8,309,115	8,274,435
Multifamily | Pass
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	8,072,407	8,123,727
Multifamily | Special mention
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	204,262	105,225
Multifamily | Substandard
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	32,446	45,483
Multifamily | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	0	0
Remaining commercial
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	7,630,004	7,174,739
Remaining commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	7,466,419	7,059,627
Remaining commercial | Special mention
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	67,313	29,657
Remaining commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	36,255	21,747
Remaining commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Commercial loans	$ 60,017	$ 63,708

LOANS AND ALLOWANCE FOR CRED_11

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Consumer Lending Asset Quality Indicators - Credit Score) (Details) - Consumer - RICs and auto loans - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loans Receivable [Line Items]
Financing receivable	$ 29,335,220	$ 24,966,121
Percent, RICs and auto loans	100.00%	100.00%
FICO score not applicable
Loans Receivable [Line Items]
Financing receivable	$ 3,136,449	$ 3,429,190
Percent, RICs and auto loans	10.70%	13.60%
FICO score less than 600
Loans Receivable [Line Items]
Financing receivable	$ 14,884,385	$ 13,445,032
Percent, RICs and auto loans	50.70%	53.90%
FICO score of 600 to 639
Loans Receivable [Line Items]
Financing receivable	$ 5,185,412	$ 4,332,278
Percent, RICs and auto loans	17.70%	17.40%
FICO Score of 640 to 679
Loans Receivable [Line Items]
Financing receivable	$ 4,758,394	$ 3,759,621
Percent, RICs and auto loans	16.20%	15.10%
FICO Score of 680 to 719
Loans Receivable [Line Items]
Financing receivable	$ 289,270	$ 0
Percent, RICs and auto loans	1.00%	0.00%
FICO Score of 720 to 759
Loans Receivable [Line Items]
Financing receivable	$ 283,052	$ 0
Percent, RICs and auto loans	1.00%	0.00%
FICO Score Equal to or Greater than 760
Loans Receivable [Line Items]
Financing receivable	$ 798,258	$ 0
Percent, RICs and auto loans	2.70%	0.00%

LOANS AND ALLOWANCE FOR CRED_12

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Consumer Lending Asset Quality Indicators - FICO and CLTV Range) (Details) - Consumer - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	$ 9,884,462	$ 8,846,765
Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	5,465,670	5,907,733
LTV not applicable | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	88,175	175,307
LTV not applicable | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	140,171	210,736
LTV less than or equal to 70% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	5,837,978	5,229,673
LTV less than or equal to 70% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	3,787,074	3,789,095
LTV of 70.01% to 80% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	2,271,074	1,976,754
LTV of 70.01% to 90% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	1,348,440	1,613,086
LTV of 80.01% to 90% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	859,219	738,314
LTV of 90.01% to 100% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	781,005	654,941
LTV of 90.01% to 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	118,227	174,109
LTV of 100.01% to 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	19,697	25,345
LTV greater than 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	27,314	46,431
LTV greater than 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	71,758	120,707
FICO score not applicable | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	92,696	182,399
FICO score not applicable | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	134,479	155,464
FICO score not applicable | LTV not applicable | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	87,808	174,426
FICO score not applicable | LTV not applicable | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	133,436	154,690
FICO score not applicable | LTV less than or equal to 70% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	4,465	6,759
FICO score not applicable | LTV less than or equal to 70% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	841	536
FICO score not applicable | LTV of 70.01% to 80% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	0	1,214
FICO score not applicable | LTV of 70.01% to 90% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	197	238
FICO score not applicable | LTV of 80.01% to 90% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	0	0
FICO score not applicable | LTV of 90.01% to 100% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	423	0
FICO score not applicable | LTV of 90.01% to 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	0	0
FICO score not applicable | LTV of 100.01% to 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	0	0
FICO score not applicable | LTV greater than 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	0	0
FICO score not applicable | LTV greater than 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	5	0
FICO score less than 600 | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	349,359	343,843
FICO score less than 600 | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	295,804	302,863
FICO score less than 600 | LTV not applicable | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	69	21
FICO score less than 600 | LTV not applicable | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	1,130	8,064
FICO score less than 600 | LTV less than or equal to 70% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	225,647	220,738
FICO score less than 600 | LTV less than or equal to 70% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	209,536	190,657
FICO score less than 600 | LTV of 70.01% to 80% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	54,101	55,108
FICO score less than 600 | LTV of 70.01% to 90% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	64,202	64,554
FICO score less than 600 | LTV of 80.01% to 90% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	35,625	35,617
FICO score less than 600 | LTV of 90.01% to 100% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	26,863	23,834
FICO score less than 600 | LTV of 90.01% to 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	14,948	16,634
FICO score less than 600 | LTV of 100.01% to 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	2,450	2,505
FICO score less than 600 | LTV greater than 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	4,604	6,020
FICO score less than 600 | LTV greater than 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	5,988	22,954
FICO score of 600 to 639 | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	279,540	276,680
FICO score of 600 to 639 | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	226,037	244,325
FICO score of 600 to 639 | LTV not applicable | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	35	45
FICO score of 600 to 639 | LTV not applicable | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	398	6,276
FICO score of 600 to 639 | LTV less than or equal to 70% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	157,281	155,920
FICO score of 600 to 639 | LTV less than or equal to 70% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	166,384	158,461
FICO score of 600 to 639 | LTV of 70.01% to 80% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	47,712	42,420
FICO score of 600 to 639 | LTV of 70.01% to 90% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	48,543	61,250
FICO score of 600 to 639 | LTV of 80.01% to 90% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	34,124	35,009
FICO score of 600 to 639 | LTV of 90.01% to 100% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	37,901	34,331
FICO score of 600 to 639 | LTV of 90.01% to 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	7,932	9,236
FICO score of 600 to 639 | LTV of 100.01% to 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	943	2,696
FICO score of 600 to 639 | LTV greater than 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	1,544	6,259
FICO score of 600 to 639 | LTV greater than 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	2,780	9,102
FICO Score of 640 to 679 | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	602,861	597,124
FICO Score of 640 to 679 | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	436,696	464,618
FICO Score of 640 to 679 | LTV not applicable | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	0	37
FICO Score of 640 to 679 | LTV not applicable | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	919	6,745
FICO Score of 640 to 679 | LTV less than or equal to 70% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	308,780	320,248
FICO Score of 640 to 679 | LTV less than or equal to 70% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	305,642	297,003
FICO Score of 640 to 679 | LTV of 70.01% to 80% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	112,811	94,601
FICO Score of 640 to 679 | LTV of 70.01% to 90% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	112,937	127,347
FICO Score of 640 to 679 | LTV of 80.01% to 90% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	76,512	90,582
FICO Score of 640 to 679 | LTV of 90.01% to 100% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	101,057	86,004
FICO Score of 640 to 679 | LTV of 90.01% to 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	10,311	19,465
FICO Score of 640 to 679 | LTV of 100.01% to 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	1,934	3,011
FICO Score of 640 to 679 | LTV greater than 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	1,767	2,641
FICO Score of 640 to 679 | LTV greater than 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	6,887	14,058
FICO Score of 680 to 719 | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	1,159,192	1,087,297
FICO Score of 680 to 719 | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	774,780	812,329
FICO Score of 680 to 719 | LTV not applicable | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	0	98
FICO Score of 680 to 719 | LTV not applicable | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	869	8,875
FICO Score of 680 to 719 | LTV less than or equal to 70% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	560,920	554,058
FICO Score of 680 to 719 | LTV less than or equal to 70% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	527,374	500,234
FICO Score of 680 to 719 | LTV of 70.01% to 80% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	266,877	236,408
FICO Score of 680 to 719 | LTV of 70.01% to 90% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	215,824	258,284
FICO Score of 680 to 719 | LTV of 80.01% to 90% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	148,283	136,916
FICO Score of 680 to 719 | LTV of 90.01% to 100% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	175,889	145,545
FICO Score of 680 to 719 | LTV of 90.01% to 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	17,231	24,675
FICO Score of 680 to 719 | LTV of 100.01% to 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	3,630	3,955
FICO Score of 680 to 719 | LTV greater than 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	3,593	10,317
FICO Score of 680 to 719 | LTV greater than 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	13,482	20,261
FICO Score of 720 to 759 | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	2,037,049	1,804,232
FICO Score of 720 to 759 | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	1,061,611	1,115,571
FICO Score of 720 to 759 | LTV not applicable | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	50	92
FICO Score of 720 to 759 | LTV not applicable | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	1,139	8,587
FICO Score of 720 to 759 | LTV less than or equal to 70% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	1,061,969	952,532
FICO Score of 720 to 759 | LTV less than or equal to 70% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	732,467	724,831
FICO Score of 720 to 759 | LTV of 70.01% to 80% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	535,840	480,900
FICO Score of 720 to 759 | LTV of 70.01% to 90% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	292,516	332,508
FICO Score of 720 to 759 | LTV of 80.01% to 90% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	210,046	177,700
FICO Score of 720 to 759 | LTV of 90.01% to 100% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	218,177	179,648
FICO Score of 720 to 759 | LTV of 90.01% to 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	20,812	30,526
FICO Score of 720 to 759 | LTV of 100.01% to 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	4,263	4,760
FICO Score of 720 to 759 | LTV greater than 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	6,704	8,600
FICO Score of 720 to 759 | LTV greater than 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	14,677	19,119
FICO Score Equal to or Greater than 760 | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	5,363,765	4,555,190
FICO Score Equal to or Greater than 760 | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	2,536,263	2,812,563
FICO Score Equal to or Greater than 760 | LTV not applicable | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	213	588
FICO Score Equal to or Greater than 760 | LTV not applicable | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	2,280	17,499
FICO Score Equal to or Greater than 760 | LTV less than or equal to 70% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	3,518,916	3,019,418
FICO Score Equal to or Greater than 760 | LTV less than or equal to 70% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	1,844,830	1,917,373
FICO Score Equal to or Greater than 760 | LTV of 70.01% to 80% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	1,253,733	1,066,103
FICO Score Equal to or Greater than 760 | LTV of 70.01% to 90% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	614,221	768,905
FICO Score Equal to or Greater than 760 | LTV of 80.01% to 90% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	354,629	262,490
FICO Score Equal to or Greater than 760 | LTV of 90.01% to 100% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	220,695	185,579
FICO Score Equal to or Greater than 760 | LTV of 90.01% to 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	46,993	73,573
FICO Score Equal to or Greater than 760 | LTV of 100.01% to 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	6,477	8,418
FICO Score Equal to or Greater than 760 | LTV greater than 110% | Residential Mortgages
Loans Receivable [Line Items]
Financing receivables	9,102	12,594
FICO Score Equal to or Greater than 760 | LTV greater than 110% | Home Equity Loans and Lines of Credit
Loans Receivable [Line Items]
Financing receivables	$ 27,939	$ 35,213

LOANS AND ALLOWANCE FOR CRED_13

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Troubled Debt Restructuring Activity) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)contract	Dec. 31, 2017USD ($)contract	Dec. 31, 2016USD ($)contract
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	$ 5,922,352	$ 6,842,987
Number of Contracts | contract	133,476	208,610	200,915
Pre-TDR Recorded Investment	$ 2,408,234	$ 3,729,848	$ 3,698,758
Post-TDR Recorded Investment	$ 2,412,957	$ 3,698,407	$ 3,680,987
TDRs which Subsequently Defaulted
Number of Contracts | contract	40,571	48,677	49,243
Recorded Investment	$ 741,584	$ 906,164	$ 844,577
Term Extension
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	7,998	(18,328)	(2,322)
Rate Reduction
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	1,785	133
Other
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	$ (5,060)	$ (13,246)	$ (15,449)
Commercial | CRE
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	99	75	92
Pre-TDR Recorded Investment	$ 145,214	$ 152,550	$ 207,004
Post-TDR Recorded Investment	$ 140,153	$ 124,710	$ 183,614
TDRs which Subsequently Defaulted
Number of Contracts | contract	7	18	0
Recorded Investment	$ 21,654	$ 27,286	$ 0
Commercial | CRE | Term Extension
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	(2,867)	(13,944)	567
Commercial | CRE | Rate Reduction
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	1,749	0
Commercial | CRE | Other
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	$ (3,943)	$ (13,896)	$ (23,957)
Commercial | C&I
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	247	790	1,416
Pre-TDR Recorded Investment	$ 9,932	$ 24,915	$ 47,003
Post-TDR Recorded Investment	$ 9,515	$ 24,862	$ 46,847
TDRs which Subsequently Defaulted
Number of Contracts | contract	155	205	264
Recorded Investment	$ 20,920	$ 7,741	$ 16,996
Commercial | C&I | Term Extension
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	(33)	(11)	(7)
Commercial | C&I | Rate Reduction
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	0	0
Commercial | C&I | Other
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	$ (384)	$ (42)	$ (149)
Commercial | Other commercial
TDRs which Subsequently Defaulted
Number of Contracts | contract	0	2	0
Recorded Investment	$ 0	$ 22	$ 0
Consumer | Residential mortgages
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	189	212	277
Pre-TDR Recorded Investment	$ 32,606	$ 40,578	$ 36,203
Post-TDR Recorded Investment	$ 31,770	$ 40,834	$ 46,132
TDRs which Subsequently Defaulted
Number of Contracts | contract	165	302	63
Recorded Investment	$ 20,783	$ 36,112	$ 9,120
Consumer | Residential mortgages | Term Extension
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	0	5	(53)
Consumer | Residential mortgages | Rate Reduction
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	0	133
Consumer | Residential mortgages | Other
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	$ (836)	$ 118	$ 9,982
Consumer | Home equity loans and lines of credit
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	159	70	161
Pre-TDR Recorded Investment	$ 10,629	$ 5,554	$ 10,360
Post-TDR Recorded Investment	$ 10,545	$ 6,568	$ 10,776
TDRs which Subsequently Defaulted
Number of Contracts | contract	43	6	15
Recorded Investment	$ 2,609	$ 257	$ 890
Consumer | Home equity loans and lines of credit | Term Extension
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	18	0	0
Consumer | Home equity loans and lines of credit | Rate Reduction
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	36	0
Consumer | Home equity loans and lines of credit | Other
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	$ (138)	$ 1,014	$ 416
Consumer | RICs and auto loans
TDRs which Subsequently Defaulted
Number of Contracts | contract	40,007	47,789	48,686
Recorded Investment	$ 673,875	$ 831,102	$ 814,454
Consumer | RICs and auto loans - originated
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	128,103	189,246	155,114
Pre-TDR Recorded Investment	$ 2,176,299	$ 3,339,056	$ 2,878,648
Post-TDR Recorded Investment	2,187,605	3,336,067	2,877,918
Consumer | RICs and auto loans - originated | Term Extension
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	10,907	(2,699)	(438)
Consumer | RICs and auto loans - originated | Rate Reduction
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	0	0
Consumer | RICs and auto loans - originated | Other
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	$ 399	$ (290)	$ (292)
Consumer | RICs - purchased
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	4,305	17,717	42,774
Pre-TDR Recorded Investment	$ 28,596	$ 159,462	$ 496,224
Post-TDR Recorded Investment	28,552	157,739	493,756
Consumer | RICs - purchased | Term Extension
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	(27)	(1,679)	(2,353)
Consumer | RICs - purchased | Rate Reduction
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	0	0
Consumer | RICs - purchased | Other
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	$ (17)	$ (44)	$ (115)
Consumer | Personal unsecured loans
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	363	391	390
Pre-TDR Recorded Investment	$ 4,650	$ 4,678	$ 5,070
Post-TDR Recorded Investment	$ 4,589	$ 4,548	$ 4,869
TDRs which Subsequently Defaulted
Number of Contracts | contract	194	320	0
Recorded Investment	$ 1,743	$ 3,250	$ 0
Consumer | Personal unsecured loans | Term Extension
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	0	0	0
Consumer | Personal unsecured loans | Rate Reduction
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	0	0
Consumer | Personal unsecured loans | Other
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	$ (61)	$ (130)	$ (201)
Consumer | Other consumer
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	11	109	691
Pre-TDR Recorded Investment	$ 308	$ 3,055	$ 18,246
Post-TDR Recorded Investment	$ 228	$ 3,079	$ 17,075
TDRs which Subsequently Defaulted
Number of Contracts | contract	0	35	215
Recorded Investment	$ 0	$ 394	$ 3,117
Consumer | Other consumer | Term Extension
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	0	0	(38)
Consumer | Other consumer | Rate Reduction
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	0	0
Consumer | Other consumer | Other
Financing Receivable, Modifications [Line Items]
Restructuring Modifications	(80)	24	$ (1,133)
Performing
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	5,014,224	5,860,119
Non-performing
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings	$ 908,128	$ 982,868

OPERATING LEASE ASSETS, NET (Co

OPERATING LEASE ASSETS, NET (Components of Leased Vehicles, Net) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Operating Leased Assets [Line Items]
Less: accumulated depreciation		$ (3,500,000)	$ (3,400,000)
Total operating lease assets, net	[1],[2]	14,078,793	10,474,308
Leased Vehicles
Operating Leased Assets [Line Items]
Operating leases		18,737,338	14,751,568
Less: accumulated depreciation		(3,518,025)	(3,333,125)
Depreciated net capitalized cost		15,219,313	11,418,443
Origination fees and other costs		66,967	27,246
Manufacturer subvention payments		(1,307,424)	(1,047,113)
Total operating lease assets, net		13,978,856	10,398,576
Commercial Equipment Vehicles and Aircraft
Operating Leased Assets [Line Items]
Operating leases		130,274	93,981
Less: accumulated depreciation		(30,337)	(18,249)
Total operating lease assets, net		$ 99,937	$ 75,732
[1]	Net of accumulated depreciation of $3.5 billion and $3.4 billion at December 31, 2018 and December 31, 2017, respectively.
[2]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.

OPERATING LEASE ASSETS, NET (Fu

OPERATING LEASE ASSETS, NET (Future Minimum Rental Receivables) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 2,316,799
2020	1,652,894
2021	599,278
2022	34,250
2023	6,003
Thereafter	11,739
Total	$ 4,620,963

OPERATING LEASE ASSETS, NET (Na

OPERATING LEASE ASSETS, NET (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Leases [Abstract]
Lease income	$ 2,375,596	$ 2,017,775	$ 1,839,307
Lease expense	1,789,030	1,553,096	1,305,712
Operating Leased Assets [Line Items]
Net gain on sale of operating leases	202,793
Operating lease assets returned to the Company at end of lease term
Operating Leased Assets [Line Items]
Net gain on sale of operating leases	$ 202,800	$ 127,200	$ 66,900

PREMISES AND EQUIPMENT (Summary

PREMISES AND EQUIPMENT (Summary of Premises and Equipment) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Total premise and equipment		$ 2,201,212	$ 2,280,716
Less accumulated depreciation		(1,395,272)	(1,431,655)
Total premises and equipment, net	[1]	805,940	849,061
Land
Property, Plant and Equipment [Line Items]
Total premise and equipment		87,531	89,350
Office buildings
Property, Plant and Equipment [Line Items]
Total premise and equipment		185,218	201,927
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Total premise and equipment		427,245	434,591
Leasehold improvement
Property, Plant and Equipment [Line Items]
Total premise and equipment		509,314	551,442
Computer software
Property, Plant and Equipment [Line Items]
Total premise and equipment		990,429	1,002,260
Automobiles and other
Property, Plant and Equipment [Line Items]
Total premise and equipment		$ 1,475	$ 1,146
[1]	Net of accumulated depreciation of $1.4 billion and $1.4 billion at December 31, 2018 and December 31, 2017, respectively.

PREMISES AND EQUIPMENT (Narrati

PREMISES AND EQUIPMENT (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018USD ($)property	Dec. 31, 2017USD ($)property	Dec. 31, 2016USD ($)property
Property, Plant and Equipment [Abstract]
Depreciation	$ 268,000,000	$ 300,000,000	$ 282,200,000
Number of properties sold | property	13	10	8
Net proceeds from sale of properties	$ 5,800,000	$ 58,000,000
Net gain/(loss) on sale of fixed assets	2,100,000		$ 2,400,000
Carrying value of properties sold in sale leaseback transaction	$ 3,600,000	$ 15,300,000
Number of properties leased back | property	1	10
Gain recognized from sale leaseback transaction	$ 154,000	$ 31,200,000
Deferred gain from sale leaseback transaction	$ 1,300,000	$ 11,500,000

VIEs (Assets and Liabilities of

VIEs (Assets and Liabilities of VIEs) (Details) - USD ($)		Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015
Assets
Restricted cash		$ 2,931,711,000	[1]		$ 3,818,807,000	[1]	$ 3,000,000,000	$ 2,600,000,000
Loans	[2]	1,283,278,000			2,522,486,000
Operating lease assets, net	[1],[3]	14,078,793,000			10,474,308,000
Various other assets		3,653,336,000	[1],[4]	$ 3,642,813,000	3,646,405,000	[1],[4]
TOTAL ASSETS		135,634,285,000		128,276,447,000	128,274,525,000
Liabilities
Various other liabilities		912,775,000	[1]	798,025,000	799,403,000	[1]
TOTAL LIABILITIES		111,787,053,000		$ 104,582,315,000	104,583,693,000
VIEs, Primary Beneficiary
Assets
Restricted cash		1,582,158,000			1,995,557,000
Loans		24,098,638,000			22,679,381,000
Operating lease assets, net		13,978,855,000			10,160,327,000
Various other assets		685,383,000			747,101,000
TOTAL ASSETS		40,345,034,000			35,582,366,000
Liabilities
Notes payable		31,949,839,000			28,469,999,000
Various other liabilities		122,010,000			197,969,000
TOTAL LIABILITIES		32,071,849,000			28,667,968,000
VIEs, Primary Beneficiary | RICs held for sale
Assets
RICs held for sale		$ 0			$ 1,100,000,000
[1]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.
[2]	Includes $209.5 million and $197.7 million of loans recorded at the fair value option ("FVO") at December 31, 2018 and December 31, 2017, respectively.
[3]	Net of accumulated depreciation of $3.5 billion and $3.4 billion at December 31, 2018 and December 31, 2017, respectively.
[4]	Includes mortgage servicing rights ("MSRs") of $149.7 million and $146.0 million at December 31, 2018 and December 31, 2017, respectively, for which the Company has elected the FVO. See Note 16 to these Consolidated Financial Statements for additional information.

VIEs (Narrative) (Details)

VIEs (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Off-balance Securitization Trusts
Variable Interest Entity [Line Items]
Proceeds from securitization of retail installment contracts	$ 4,100,000,000	$ 3,400,000,000
VIE, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Sales of receivables securitization	2,900,000,000	2,600,000,000	$ 886,300,000
Gain (loss) on retail installment contracts	(20,700,000)	(13,000,000)	$ (10,500,000)
VIE, maximum exposure to loss	0
VIE, Not Primary Beneficiary | Trusts
Variable Interest Entity [Line Items]
Gross retail installment contracts transferred to consolidated Trusts	$ 27,100,000,000	$ 26,200,000,000

VIEs (Cash Flow Summary) (Detai

VIEs (Cash Flow Summary) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
VIE, Primary Beneficiary | Trusts
Variable Interest Entity [Line Items]
Assets securitized	$ 26,650,284	$ 18,442,793	$ 15,828,921
Net proceeds from new securitizations	17,338,880	14,126,211	13,319,530
Net proceeds from sale of retained bonds	1,059,694	499,354	436,812
Cash received for servicing fees	887,988	866,210	787,778
Net distributions from Trusts	2,767,509	2,613,032	1,748,013
Total cash received from Trusts	22,054,071	18,104,807	16,292,133
VIE, Not Primary Beneficiary | Off-balance Securitization Trusts
Variable Interest Entity [Line Items]
Assets securitized	2,905,922	2,583,341	904,108
Net proceeds from new securitizations	2,909,794	2,588,227	876,592
Cash received for servicing fees	43,859	35,682	47,804
Total cash received from Trusts	$ 2,953,653	$ 2,623,909	$ 924,396

VIEs (Off-balance Sheet Portfol

VIEs (Off-balance Sheet Portfolio) (Details) - VIE, Not Primary Beneficiary - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Total serviced for other portfolio	$ 4,072,843	$ 3,428,248
Chrysler Capital securitizations
Variable Interest Entity [Line Items]
Total serviced for other portfolio	611,050	1,404,232
Third parties
Variable Interest Entity [Line Items]
Total serviced for other portfolio	611,050	1,404,232
SC
Variable Interest Entity [Line Items]
Total serviced for other portfolio	$ 3,461,793	$ 2,024,016

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLES (Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 4,444,389	$ 4,444,389
Consumer and Business Banking
Goodwill [Line Items]
Goodwill	1,880,304
Commercial Banking
Goodwill [Line Items]
Goodwill	1,412,995
CIB
Goodwill [Line Items]
Goodwill	131,130
SC
Goodwill [Line Items]
Goodwill	$ 1,019,960

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLES (Goodwill) (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill	$ 4,444,389,000	$ 4,444,389,000	$ 4,444,389,000
Impairment of goodwill		0	$ 10,536,000	$ 0
Commercial Banking
Goodwill [Line Items]
Goodwill		542,600,000
CRE
Goodwill [Line Items]
Goodwill		$ 870,400,000
Santander BanCorp
Goodwill [Line Items]
Impairment of goodwill	$ 10,500,000

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLES (Finite-lived Intangibles) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 475,193	$ 535,753
Accumulated Amortization	(316,748)	(270,460)
Dealer networks
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	387,196	426,411
Accumulated Amortization	(192,804)	(153,589)
Chrysler relationship
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	65,000	80,000
Accumulated Amortization	(73,750)	(58,750)
Trade name
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	14,700	15,900
Accumulated Amortization	(3,300)	(2,100)
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	8,297	13,442
Accumulated Amortization	$ (46,894)	$ (56,021)

GOODWILL AND OTHER INTANGIBLE_5

GOODWILL AND OTHER INTANGIBLES (Other Intangible Assets) (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Intangibles not subject to amortization	$ 0	$ 0
Amortization of intangibles	$ 60,650,000	$ 61,491,000	$ 70,034,000

GOODWILL AND OTHER INTANGIBLE_6

GOODWILL AND OTHER INTANGIBLES (Future Amortization Expense) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Calendar Year Amount
2019	$ 55,717
2020	58,929
2021	42,903
2022	39,901
2023	28,649
Thereafter	$ 249,094

OTHER ASSETS (Details)

OTHER ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred tax assets	$ 625,087			$ 771,652
Accrued interest receivable	566,602			577,585
Derivative assets at fair value	511,916			448,977
Other repossessed assets	225,890			212,882
Equity method investments	204,687			194,434
MSRs	152,121			149,197
OREO	107,868			130,777
Miscellaneous assets, receivables and prepaid expenses	1,259,165			1,160,901
Total other assets	3,653,336	[1],[2]	$ 3,642,813	3,646,405	[1],[2]
Income tax receivables	373,200			292,200
Prepaid expenses	$ 199,000			$ 172,500
[1]	Includes mortgage servicing rights ("MSRs") of $149.7 million and $146.0 million at December 31, 2018 and December 31, 2017, respectively, for which the Company has elected the FVO. See Note 16 to these Consolidated Financial Statements for additional information.
[2]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.

DEPOSITS AND OTHER CUSTOMER A_3

DEPOSITS AND OTHER CUSTOMER ACCOUNTS (Summary of Deposits and Other Customer Accounts) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Balance
Interest-bearing demand deposits	$ 8,827,704	$ 8,784,597
Non-interest-bearing demand deposits	14,420,450	15,402,235
Savings	5,875,787	5,903,897
Customer repurchase accounts	654,843	802,119
Money market	24,263,929	24,530,661
CDs	7,468,667	5,407,594
Total Deposits	61,511,380	60,831,103
Foreign deposits	$ 8,400,000	$ 9,100,000
Percent of total deposits
Interest-bearing demand deposits (as a percent)	14.40%	14.40%
Non-interest-bearing demand deposits (as a percent)	23.40%	25.30%
Savings (as a percent)	9.60%	9.70%
Customer repurchase accounts (as a percent)	1.10%	1.40%
Money market (as a percent)	39.40%	40.30%
CDs (as a percent)	12.10%	8.90%
Total Deposits (as a percent)	100.00%	100.00%

DEPOSITS AND OTHER CUSTOMER A_4

DEPOSITS AND OTHER CUSTOMER ACCOUNTS (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged as collateral, fair value	$ 6,600	$ 5,900
Demand deposit overdrafts that have been reclassified as loan balances	50	38.9
CD in denominations greater than $250,000	1,900	1,300
Public fund deposits
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged as collateral, fair value	$ 2,700	$ 2,300

DEPOSITS AND OTHER CUSTOMER A_5

DEPOSITS AND OTHER CUSTOMER ACCOUNTS (Interest Expense on Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Interest-bearing demand deposits	$ 41,481	$ 21,628	$ 40,262
Savings	12,325	11,004	12,723
Customer repurchase accounts	1,761	1,932	1,750
Money market	245,794	132,993	126,418
CDs	87,767	73,487	95,869
Total Deposits	$ 389,128	$ 241,044	$ 277,022

DEPOSITS AND OTHER CUSTOMER A_6

DEPOSITS AND OTHER CUSTOMER ACCOUNTS (CD Maturity of $100,000 or More) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Banking and Thrift [Abstract]
Three months or less	$ 731,665
Over three through six months	513,196
Over six through twelve months	1,349,221
Over twelve months	1,191,485
Total	$ 3,785,568

DEPOSITS AND OTHER CUSTOMER A_7

DEPOSITS AND OTHER CUSTOMER ACCOUNTS (All Company CD Maturity Schedule) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
2019	$ 5,265,491
2020	956,587
2021	932,662
2022	247,684
2023	60,209
Thereafter	6,034
Total	$ 7,468,667	$ 5,407,594

BORROWINGS (Narrative) (Details

BORROWINGS (Narrative) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Total borrowings and other debt obligations	[1]	$ 44,953,784	$ 39,003,313
[1]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.

BORROWINGS (Bank) (Narrative) (

BORROWINGS (Bank) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017	Mar. 31, 2017
Debt Instrument [Line Items]
Loss on debt extinguishment		$ 3,470	$ 30,349	$ 114,232
Bank | Issuance of Stock, Subsidiary
Debt Instrument [Line Items]
Debt repurchased					$ 14,200
Bank | Subordinated Debt Due May 2018
Debt Instrument [Line Items]
Stated interest rate		8.75%
Bank | Senior Notes | 2.00% Senior Notes Due 2018
Debt Instrument [Line Items]
Debt repurchased						$ 1,000,000
Stated interest rate						2.00%
Bank | Subordinated Debt | Subordinated Debt Due May 2018
Debt Instrument [Line Items]
Debt repurchased	$ 307,900		$ 307,900
Stated interest rate	8.75%		8.75%
Loss on debt extinguishment	$ 14,000

BORROWINGS (SHUSA) (Narrative)

BORROWINGS (SHUSA) (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Loss on debt extinguishment	$ 3,470	$ 30,349	$ 114,232
Sovereign Capital Trust IX
Debt Instrument [Line Items]
Debt repurchased	154,600
Capital Trust VI junior subordinated debentures due June 2036
Debt Instrument [Line Items]
Debt repurchased		80,300
Senior Notes
Debt Instrument [Line Items]
Debt issued	1,400,000	$ 4,700,000
Senior Notes | Senior floating rate notes
Debt Instrument [Line Items]
Debt issued	427,900
Senior Notes | 4.45% senior notes due 2021
Debt Instrument [Line Items]
Debt issued	$ 1,000,000
Stated interest rate	4.45%
Senior Notes | 3.45% senior notes, due 2018
Debt Instrument [Line Items]
Stated interest rate	3.45%	3.45%
Debt repurchased	$ 244,600	$ 255,400
Senior Notes | 2.70% senior notes, due 2019
Debt Instrument [Line Items]
Stated interest rate	2.70%
Debt repurchased	$ 821,300
Senior Notes | 3.70% senior notes, due 2022
Debt Instrument [Line Items]
Debt issued		$ 1,400,000
Stated interest rate	3.70%	3.70%
Senior Notes | Senior floating rate notes due 2019
Debt Instrument [Line Items]
Debt issued		$ 759,700
Senior Notes | 4.40% senior notes, due 2027
Debt Instrument [Line Items]
Debt issued		$ 1,100,000
Stated interest rate	4.40%	4.40%
Senior Notes | Senior floating rate notes due 2020
Debt Instrument [Line Items]
Debt issued		$ 418,500
Senior Notes | 3.40% senior notes, due 2023
Debt Instrument [Line Items]
Debt issued		$ 1,000,000
Stated interest rate	3.40%	3.40%

BORROWINGS (Parent Company and

BORROWINGS (Parent Company and Other IHC Entities) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total borrowings and other debt obligations	[1]	$ 44,953,784	$ 39,003,313
Subsidiaries | 2.00% subordinated debt, maturing through 2042
Debt Instrument [Line Items]
Subordinated debt, Balance		$ 40,703	$ 40,842
Effective Rate		2.00%	2.00%
Stated interest rate		2.00%
Subsidiaries | Short-term borrowing, due within one year, maturing January 2019
Debt Instrument [Line Items]
Short-term borrowings, Balance		$ 44,000	$ 24,000
Effective Rate		2.40%	1.38%
Subsidiaries | Total due to others overnight, due within one year, due July 2018
Debt Instrument [Line Items]
Short-term borrowings, Balance		$ 0	$ 10,000
Effective Rate		0.00%	1.38%
Subsidiaries | Short-term borrowing, due within one year, maturing January 2019
Debt Instrument [Line Items]
Short-term borrowings, Balance		$ 15,900	$ 37,546
Effective Rate		0.38%	0.25%
Subsidiaries | Short-term borrowings, due within one year, maturing through 2018
Debt Instrument [Line Items]
Short-term borrowings, Balance		$ 0	$ 7,123
Effective Rate		0.00%	0.83%
Parent Company and Other Subsidiaries
Debt Instrument [Line Items]
Total borrowings and other debt obligations		$ 8,452,288	$ 8,269,076
Effective Rate		3.76%	3.45%
Senior Notes | 3.45% senior notes, due August 2018
Debt Instrument [Line Items]
Senior notes, Balance		$ 0	$ 244,317
Effective Rate		0.00%	3.62%
Stated interest rate		3.45%	3.45%
Senior Notes | 2.70% senior notes, due May 2019
Debt Instrument [Line Items]
Senior notes, Balance		$ 178,628	$ 998,349
Effective Rate		2.82%	2.82%
Stated interest rate		2.70%
Senior Notes | 2.65% senior notes, due April 2020
Debt Instrument [Line Items]
Senior notes, Balance		$ 997,848	$ 996,238
Effective Rate		2.82%	2.82%
Stated interest rate		2.65%
Senior Notes | 4.45% senior notes, due December 2021
Debt Instrument [Line Items]
Senior notes, Balance		$ 995,540	$ 0
Effective Rate		4.61%	0.00%
Stated interest rate		4.45%
Senior Notes | 3.70% senior notes, due March 2022
Debt Instrument [Line Items]
Senior notes, Balance		$ 1,440,063	$ 1,440,044
Effective Rate		3.74%	3.74%
Stated interest rate		3.70%	3.70%
Senior Notes | 3.40% senior notes, due January 2023
Debt Instrument [Line Items]
Senior notes, Balance		$ 994,831	$ 993,662
Effective Rate		3.54%	3.54%
Stated interest rate		3.40%	3.40%
Senior Notes | 4.50% senior notes, due July 2025
Debt Instrument [Line Items]
Senior notes, Balance		$ 1,095,966	$ 1,095,449
Effective Rate		4.56%	4.56%
Stated interest rate		4.50%
Senior Notes | 4.40% senior notes, due July 2027
Debt Instrument [Line Items]
Senior notes, Balance		$ 1,049,799	$ 1,049,787
Effective Rate		4.40%	4.40%
Stated interest rate		4.40%	4.40%
Senior Notes | Junior subordinated debentures - Sovereign Capital Trust IX, due July 2036
Debt Instrument [Line Items]
Subordinated debt, Balance		$ 0	$ 149,462
Effective Rate		0.00%	3.14%
Senior Notes | Common securities - Sovereign Capital Trust IX
Debt Instrument [Line Items]
Common securities, Balance		$ 0	$ 4,640
Effective Rate		0.00%	3.14%
Senior Notes | Senior notes, due July 2019
Debt Instrument [Line Items]
Senior notes, Balance		$ 388,717	$ 388,565
Effective Rate		3.22%	2.31%
Senior Notes | Senior notes, due July 2019 | 3-month LIBOR
Debt Instrument [Line Items]
Basis spread on LIBOR (as a percent)		1.00%
Senior Notes | Senior notes, due September 2019
Debt Instrument [Line Items]
Senior notes, Balance		$ 370,936	$ 370,754
Effective Rate		3.18%	2.34%
Senior Notes | Senior notes, due January 2020
Debt Instrument [Line Items]
Senior notes, Balance		$ 302,619	$ 302,494
Effective Rate		3.22%	2.40%
Senior Notes | Senior notes, due September 2020
Debt Instrument [Line Items]
Senior notes, Balance		$ 108,888	$ 115,804
Effective Rate		3.17%	3.32%
Senior Notes | Senior notes, due September 2020 | 3-month LIBOR
Debt Instrument [Line Items]
Basis spread on LIBOR (as a percent)		1.05%
Senior Notes | Senior notes, due June 2022
Debt Instrument [Line Items]
Senior notes, Balance		$ 427,850	$ 0
Effective Rate		3.38%	0.00%
[1]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.

BORROWINGS (Santander Bank) (De

BORROWINGS (Santander Bank) (Details) - SBNA - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total borrowings and other debt obligations	$ 5,121,762	$ 2,575,980
Effective Rate	3.18%	3.07%
8.750% subordinated debentures, due May 2018
Debt Instrument [Line Items]
Subordinated debt, Balance	$ 0	$ 192,019
Effective Rate	0.00%	8.92%
Stated interest rate	8.75%
Subordinated term loan, due February 2019
Debt Instrument [Line Items]
Subordinated term loan, Balance	$ 99,402	$ 111,883
Effective Rate	8.20%	7.12%
FHLB advances, maturing through September 2021
Debt Instrument [Line Items]
FHLB advances, Balance	$ 4,850,000	$ 1,950,000
Effective Rate	2.74%	1.53%
Securities sold under repurchase agreements
Debt Instrument [Line Items]
Securities sold under repurchase agreements, Balance	$ 0	$ 150,000
Effective Rate	0.00%	1.56%
REIT preferred, callable May 2020
Debt Instrument [Line Items]
REIT preferred	$ 145,590	$ 144,167
Effective Rate	13.22%	13.35%
Subordinated term loan, due August 2022
Debt Instrument [Line Items]
Subordinated term loan, Balance	$ 26,770	$ 27,911
Effective Rate	9.95%	8.89%
FHLB advances
Debt Instrument [Line Items]
Letters of credit	$ 688,800

BORROWINGS (SC Credit Facilitie

BORROWINGS (SC Credit Facilities) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Balance	$ 88,700,000	$ 90,900,000
SC
Debt Instrument [Line Items]
Balance	52,686,320,000	49,078,924,000
Restricted Cash Pledged	$ 1,576,915,000	$ 1,847,759,000
SC | Maximum
Debt Instrument [Line Items]
Effective Rate	3.53%	4.09%
SC | Revolving Credit Facility
Debt Instrument [Line Items]
Balance	$ 4,478,214,000	$ 5,598,316,000
Committed Amount	$ 10,348,945,000	$ 12,444,483,000
Effective Rate	3.92%	2.73%
Assets Pledged	$ 6,041,896,000	$ 6,703,767,000
Restricted Cash Pledged	$ 5,810,000	132,024,000
SC | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Facility rolling maturity period	1 year
SC | Revolving Credit Facility | Warehouse line, maturing on various dates
Debt Instrument [Line Items]
Balance	$ 314,845,000	339,145,000
Committed Amount	$ 1,250,000,000	$ 1,250,000,000
Effective Rate	4.83%	2.53%
Assets Pledged	$ 458,390,000	$ 461,353,000
Restricted Cash Pledged	0	12,645,000
SC | Revolving Credit Facility | Warehouse line, due November 2020
Debt Instrument [Line Items]
Balance	317,020,000
Committed Amount	$ 500,000,000
Effective Rate	3.53%
Assets Pledged	$ 359,214,000
Restricted Cash Pledged	525,000
SC | Revolving Credit Facility | Warehouse line, due August 2020
Debt Instrument [Line Items]
Balance	2,154,243,000
Committed Amount	$ 4,400,000,000
Effective Rate	3.79%
Assets Pledged	$ 2,859,113,000
Restricted Cash Pledged	4,831,000
SC | Revolving Credit Facility | Warehouse line, due October 2020
Debt Instrument [Line Items]
Balance	242,377,000
Committed Amount	$ 2,050,000,000
Effective Rate	5.94%
Assets Pledged	$ 345,599,000
Restricted Cash Pledged	120,000
SC | Revolving Credit Facility | Warehouse line, due August 2019
Debt Instrument [Line Items]
Balance	53,584,000	2,044,843,000
Committed Amount	$ 500,000,000	$ 3,900,000,000
Effective Rate	8.34%	2.96%
Assets Pledged	$ 78,790,000	$ 2,929,890,000
Restricted Cash Pledged	0	53,639,000
SC | Revolving Credit Facility | Warehouse line, due November 2020
Debt Instrument [Line Items]
Balance	1,000,000,000
Committed Amount	$ 1,000,000,000
Effective Rate	3.32%
Assets Pledged	$ 1,430,524,000
Restricted Cash Pledged	6,000
SC | Revolving Credit Facility | Warehouse line, due October 2019
Debt Instrument [Line Items]
Balance	97,200,000	226,577,000
Committed Amount	$ 350,000,000	$ 1,800,000,000
Effective Rate	4.35%	4.95%
Assets Pledged	$ 108,418,000	$ 311,336,000
Restricted Cash Pledged	328,000	6,772,000
SC | Revolving Credit Facility | Warehouse line, due November 2019
Debt Instrument [Line Items]
Balance		435,220,000
Committed Amount		$ 500,000,000
Effective Rate		1.92%
Assets Pledged		$ 521,365,000
Restricted Cash Pledged		16,866,000
SC | Revolving Credit Facility | Warehouse line, due October 2019
Debt Instrument [Line Items]
Balance		81,865,000
Committed Amount		$ 400,000,000
Effective Rate		4.09%
Assets Pledged		$ 114,021,000
Restricted Cash Pledged		3,057,000
SC | Revolving Credit Facility | Warehouse line, due January 2018
Debt Instrument [Line Items]
Balance		336,484,000
Committed Amount		$ 500,000,000
Effective Rate		2.87%
Assets Pledged		$ 473,208,000
Restricted Cash Pledged		0
SC | Revolving Credit Facility | Warehouse line, due November 2019
Debt Instrument [Line Items]
Balance		403,999,000
Committed Amount		$ 1,000,000,000
Effective Rate		2.66%
Assets Pledged		$ 546,782,000
Restricted Cash Pledged		14,729,000
SC | Revolving Credit Facility | Warehouse line, due October 2018
Debt Instrument [Line Items]
Balance		235,700,000
Committed Amount		$ 300,000,000
Effective Rate		2.84%
Assets Pledged		$ 289,634,000
Restricted Cash Pledged		10,474,000
SC | Revolving Credit Facility | Warehouse line, due December 2018
Debt Instrument [Line Items]
Balance		0
Committed Amount		$ 300,000,000
Effective Rate		1.49%
Assets Pledged		$ 0
Restricted Cash Pledged		0
SC | Revolving Credit Facility | Repurchase facility, due April 2019
Debt Instrument [Line Items]
Balance	167,118,000
Committed Amount	$ 167,118,000
Effective Rate	3.84%
Assets Pledged	$ 235,540,000
Restricted Cash Pledged	0
SC | Revolving Credit Facility | Repurchase facility, due March 2019
Debt Instrument [Line Items]
Balance	131,827,000
Committed Amount	$ 131,827,000
Effective Rate	3.54%
Assets Pledged	$ 166,308,000
Restricted Cash Pledged	$ 0
SC | Revolving Credit Facility | Repurchase facility, maturing on various dates
Debt Instrument [Line Items]
Balance		325,775,000
Committed Amount		$ 325,775,000
Effective Rate		3.24%
Assets Pledged		$ 474,188,000
Restricted Cash Pledged		13,842,000
SC | Revolving Credit Facility | Repurchase facility, due April 2018
Debt Instrument [Line Items]
Balance		202,311,000
Committed Amount		$ 202,311,000
Effective Rate		2.67%
Assets Pledged		$ 264,120,000
Restricted Cash Pledged		0
SC | Revolving Credit Facility | Repurchase facility, due March 2018
Debt Instrument [Line Items]
Balance		147,500,000
Committed Amount		$ 147,500,000
Effective Rate		3.91%
Assets Pledged		$ 222,108,000
Restricted Cash Pledged		0
SC | Revolving Credit Facility | Repurchase facility, due March 2018
Debt Instrument [Line Items]
Balance		68,897,000
Committed Amount		$ 68,897,000
Effective Rate		3.04%
Assets Pledged		$ 95,762,000
Restricted Cash Pledged		0
SC | Revolving Credit Facility | Line of credit with related party, due December 2018
Debt Instrument [Line Items]
Balance		0
Committed Amount		$ 1,000,000,000
Effective Rate		3.09%
Assets Pledged		$ 0
Restricted Cash Pledged		0
SC | Revolving Credit Facility | Line of credit with related party, due December 2018
Debt Instrument [Line Items]
Balance		750,000,000
Committed Amount		$ 750,000,000
Effective Rate		1.33%
Assets Pledged		$ 0
Restricted Cash Pledged		$ 0

BORROWINGS (Secured Structured

BORROWINGS (Secured Structured Financings) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Initial Note Amounts Issued	$ 88,700	$ 90,900
SC
Debt Instrument [Line Items]
Balance	26,901,520	22,559,941
Initial Note Amounts Issued	52,686,320	49,078,924
Collateral	35,296,170	29,106,279
Restricted Cash	1,576,915	1,847,759
Private issuances of notes backed by vehicle leases	$ 7,800,000	$ 3,700,000
SC | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate Range	0.88%	0.88%
SC | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate Range	3.53%	4.09%
SC | SC public securitizations, maturing on various dates
Debt Instrument [Line Items]
Balance	$ 19,225,169	$ 14,995,304
Initial Note Amounts Issued	41,380,952	36,800,642
Collateral	24,912,904	19,873,621
Restricted Cash	$ 1,541,714	$ 1,470,459
SC | SC public securitizations, maturing on various dates | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate Range	1.16%	0.89%
SC | SC public securitizations, maturing on various dates | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate Range	3.53%	2.80%
SC | SC privately issued amortizing notes, maturing on various dates
Debt Instrument [Line Items]
Balance	$ 7,676,351	$ 7,564,637
Initial Note Amounts Issued	11,305,368	12,278,282
Collateral	10,383,266	9,232,658
Restricted Cash	$ 35,201	$ 377,300
SC | SC privately issued amortizing notes, maturing on various dates | Minimum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate Range	0.88%	0.88%
SC | SC privately issued amortizing notes, maturing on various dates | Maximum
Debt Instrument [Line Items]
Initial Weighted Average Interest Rate Range	3.17%	4.09%

BORROWINGS (Maturities Schedule

BORROWINGS (Maturities Schedule) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Debt Disclosure [Abstract]
2019	$ 4,988,996
2020	9,427,828
2021	7,009,986
2022	9,282,303
2023	5,661,986
Thereafter	8,582,685
Total	$ 44,953,784

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018	Jan. 01, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income/(loss), pretax activity	$ (71,516)	$ (14,959)	$ (38,868)
Total other comprehensive income/(loss), tax effect	(12,611)	9,736	16,190
TOTAL OTHER COMPREHENSIVE (LOSS) / GAIN, NET OF TAX	(84,127)	(5,223)	(22,678)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity, Beginning balance	23,690,832	22,378,758	21,847,100
Net Activity	(84,127)	(5,223)	(22,678)
Cumulative-effect adjustment upon adoption of new accounting standards				$ 8,455	$ 25,707
Net Activity, upon adoption	(123,221)
Equity, Ending balance	23,847,232	23,690,832	22,378,758
Net unrealized (losses) on cash flow hedge derivative financial instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income/(loss), pretax activity	(6,225)	10,620	1,203
Other comprehensive income/(loss), tax effect	(848)	7,508	(130)
Other comprehensive income/(loss), net activity	(7,073)	18,128	1,073
Reclassification adjustment, pretax activity	4,781	(15,005)	9,848
Reclassification adjustment, tax effect	(1,504)	(2,786)	(1,065)
Reclassification adjustment, net activity	3,277	(17,791)	8,783
Total other comprehensive income/(loss), pretax activity	(1,444)	(4,385)	11,051
Total other comprehensive income/(loss), tax effect	(2,352)	4,722	(1,195)
TOTAL OTHER COMPREHENSIVE (LOSS) / GAIN, NET OF TAX	(3,796)	337	9,856
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity, Beginning balance	(6,388)	(6,725)	(16,581)
Net Activity	(3,796)	337	9,856
Cumulative-effect adjustment upon adoption of new accounting standards				(9,629)
Net Activity, upon adoption	(13,425)
Equity, Ending balance	(19,813)	(6,388)	(6,725)
Net unrealized (losses) on investments in debt securities AFS
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income/(loss), pretax activity	(84,316)	(17,972)	4,040
Other comprehensive income/(loss), tax effect	(3,577)	6,694	(1,459)
Other comprehensive income/(loss), net activity	(87,893)	(11,278)	2,581
Reclassification adjustment, pretax activity			(57,727)
Reclassification adjustment, tax effect			20,334
Reclassification adjustment, net activity			(37,393)
Total other comprehensive income/(loss), pretax activity	(77,599)	(15,528)	(53,687)
Total other comprehensive income/(loss), tax effect	(3,292)	5,784	18,875
TOTAL OTHER COMPREHENSIVE (LOSS) / GAIN, NET OF TAX	(80,891)	(9,744)	(34,812)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity, Beginning balance	(140,498)	(130,754)	(95,942)
Net Activity	(80,891)	(9,744)	(34,812)
Cumulative-effect adjustment upon adoption of new accounting standards				(24,378)
Net Activity, upon adoption	(105,269)
Equity, Ending balance	(245,767)	(140,498)	(130,754)
Reclassification adjustment for net (gains)/losses included in net income/(expense) on non-OTTI securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification adjustment, pretax activity	6,717	2,444	(57,771)
Reclassification adjustment, tax effect	285	(910)	20,350
Reclassification adjustment, net activity	7,002	1,534	(37,421)
Reclassification adjustment for net losses included in net income/(expense) on OTTI securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification adjustment, pretax activity			44
Reclassification adjustment, tax effect			(16)
Reclassification adjustment, net activity			28
Pension and post-retirement actuarial gains/(losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income/(loss), pretax activity	7,527	4,954	3,768
Total other comprehensive income/(loss), tax effect	(6,967)	(770)	(1,490)
TOTAL OTHER COMPREHENSIVE (LOSS) / GAIN, NET OF TAX	560	4,184	2,278
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity, Beginning balance	(51,545)	(55,729)	(58,007)
Net Activity	560	4,184	2,278
Cumulative-effect adjustment upon adoption of new accounting standards				(5,087)
Net Activity, upon adoption	(4,527)
Equity, Ending balance	(56,072)	(51,545)	(55,729)
Accumulated other comprehensive (loss)/income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Equity, Beginning balance	(198,431)	(193,208)	(170,530)
Cumulative-effect adjustment upon adoption of new accounting standards				$ (39,094)
Equity, Ending balance	$ (321,652)	$ (198,431)	$ (193,208)

STOCKHOLDER'S EQUITY (Narrative

STOCKHOLDER'S EQUITY (Narrative) (Details) $ / shares in Units, $ in Thousands	Nov. 15, 2017USD ($)shares	May 31, 2006USD ($)shares	Apr. 30, 2006$ / sharesshares	Dec. 31, 2018USD ($)shares	Dec. 31, 2017USD ($)shares	Dec. 31, 2016USD ($)
Related Party Transaction [Line Items]
Common stock, shares outstanding (in shares) | shares				530,391,043	530,391,043
Contribution from shareholder and related tax impact				$ 88,468
Preferred stock, shares authorized (in shares) | shares				7,500,000	7,500,000
Cash dividends paid to preferred stockholders				$ 10,950	$ 14,600	$ 15,128
Series C Preferred Stock
Related Party Transaction [Line Items]
Preferred stock, shares authorized (in shares) | shares			8,000
Preferred stock, dividend rate			7.30%
Issuance of stock (in shares) | shares		8,000,000
Issuance of stock		$ 195,400
Ownership interest in preferred stock per each depository shareholder		0.001
Preferred stock, redemption price per share (in usd per share) | $ / shares			$ 25,000
Preferred stock, redemption price per depository share (in usd per share) | $ / shares			$ 25
Parent Company
Related Party Transaction [Line Items]
Cash dividends paid to preferred stockholders				10,950	14,600	$ 15,128
SC
Related Party Transaction [Line Items]
Contribution from shareholder and related tax impact					0
Repurchase of common stock				$ 182,600
SC | Noncontrolling Interest
Related Party Transaction [Line Items]
Contribution from shareholder and related tax impact	$ 707,600				$ (707,589)
SC | Affiliated Entity | DDFS LLC | Call Transaction | Parent Company
Related Party Transaction [Line Items]
Number of shares called by warrant (in shares) | shares	34,598,506

STOCKHOLDER'S EQUITY (Transacti

STOCKHOLDER'S EQUITY (Transactions with Santander) (Details) - Common Stock and Paid-in Capital - USD ($) $ in Thousands	1 Months Ended					12 Months Ended
	Dec. 31, 2018	Oct. 31, 2018	Feb. 28, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Deferred tax asset on purchased assets						$ 3,156
Adjustment to book value of assets purchased on January 1						277
Contribution	$ 33,448	$ 45,846	$ 5,741	$ 15,317	$ 9,000	$ 88,468	$ 11,747
Return of capital				$ (12,570)

DERIVATIVES (Narrative) (Detail

DERIVATIVES (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Credit Risk Contingent Features
Fair value of derivatives with credit risk contingent feature associated with credit ratings	$ 1,200,000
Additional collateral required	0
Fair value of derivatives with credit risk contingent features	9,500,000	$ 10,400,000
Collateral posted	11,500,000	15,700,000
Cash Flow Hedges
Cash flow hedge gains to be reclassified within next twelve months	26,800,000
Net unrealized (losses) on cash flow hedge derivative financial instruments
Derivative [Line Items]
Net amount of change recognized in Other Comprehensive Income for cash flow hedge derivatives	(7,073,000)	18,128,000	$ 1,073,000
Amount reclassified from Other Comprehensive Income into earnings for cash flow hedge derivatives	$ (3,277,000)	$ 17,791,000	$ (8,783,000)

DERIVATIVES (Derivatives Design

DERIVATIVES (Derivatives Designated in Hedge Relationships) (Details) - Designated as hedging instrument - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Notional Amount	$ 10,176,105	$ 10,183,511
Asset, Total	54,986	49,442
Liability, Total	$ 100,272	$ 84,911
Weighted Average Receive Rate	1.66%	0.58%
Weighted Average Pay Rate	1.66%	0.63%
Weighted Average
Derivative [Line Items]
Weighted Average Life (Years)	2 years 6 days	2 years 6 months 10 days
Cash flow hedges | Pay fixed — receive variable interest rate swaps
Derivative [Line Items]
Notional Amount	$ 4,176,105	$ 5,183,511
Asset, Cash flow hedges	44,054	46,422
Liability, Cash flow hedges	$ 10,503	$ 4,458
Weighted Average Receive Rate	2.67%	0.05%
Weighted Average Pay Rate	1.74%	0.14%
Cash flow hedges | Pay fixed — receive variable interest rate swaps | Weighted Average
Derivative [Line Items]
Weighted Average Life (Years)	2 years 27 days	2 years 1 month 13 days
Cash flow hedges | Pay variable - receive fixed interest rate swaps
Derivative [Line Items]
Notional Amount	$ 4,000,000	$ 4,000,000
Asset, Cash flow hedges	0	0
Liability, Cash flow hedges	$ 89,769	$ 80,453
Weighted Average Receive Rate	1.41%	1.41%
Weighted Average Pay Rate	2.40%	1.42%
Cash flow hedges | Pay variable - receive fixed interest rate swaps | Weighted Average
Derivative [Line Items]
Weighted Average Life (Years)	2 years 7 days	3 years 7 days
Cash flow hedges | Interest rate floor
Derivative [Line Items]
Notional Amount	$ 2,000,000	$ 1,000,000
Asset, Cash flow hedges	10,932	3,020
Liability, Cash flow hedges	$ 0	$ 0
Weighted Average Receive Rate	0.04%	0.00%
Weighted Average Pay Rate	0.00%	0.00%
Cash flow hedges | Interest rate floor | Weighted Average
Derivative [Line Items]
Weighted Average Life (Years)	1 year 10 months 28 days	2 years 7 months 20 days

DERIVATIVES (Derivatives Not De

DERIVATIVES (Derivatives Not Designated in Hedge Relationships) (Details) - Not designated as hedging instrument - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	$ 48,697,504	$ 48,685,902
Asset derivatives Fair value	463,499	413,802
Liability derivatives Fair value	397,159	342,900
Other
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	1,038,558	824,786
Asset derivatives Fair value	4,527	5,874
Liability derivatives Fair value	7,137	5,228
Foreign exchange contracts
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	3,635,119	2,764,999
Asset derivatives Fair value	47,330	24,932
Liability derivatives Fair value	37,466	25,521
Interest rate swap agreements
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	2,281,379	1,749,349
Asset derivatives Fair value	11,553	9,596
Liability derivatives Fair value	3,264	1,631
Interest rate cap agreements
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	7,758,710	10,932,707
Asset derivatives Fair value	128,467	135,942
Liability derivatives Fair value	0	32,109
Options for interest rate cap agreements
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	7,741,765	10,906,081
Asset derivatives Fair value	0	32,165
Liability derivatives Fair value	128,377	135,824
Mortgage banking derivatives
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	917,869	768,046
Asset derivatives Fair value	4,256	2,301
Liability derivatives Fair value	13,774	2,551
Mortgage banking derivatives | Forward commitments to sell loans
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	329,189	311,852
Asset derivatives Fair value	4	3
Liability derivatives Fair value	4,821	459
Mortgage banking derivatives | Interest rate lock commitments
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	133,680	126,194
Asset derivatives Fair value	2,677	2,105
Liability derivatives Fair value	0	0
Mortgage banking derivatives | Mortgage servicing
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	455,000	330,000
Asset derivatives Fair value	1,575	193
Liability derivatives Fair value	8,953	2,092
Customer-related derivatives
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	25,324,104	20,739,934
Asset derivatives Fair value	267,366	202,992
Liability derivatives Fair value	207,141	140,036
Customer-related derivatives | Swaps receive fixed
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	11,335,998	9,328,079
Asset derivatives Fair value	92,542	72,912
Liability derivatives Fair value	120,185	70,348
Customer-related derivatives | Swaps pay fixed
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	11,825,804	9,576,893
Asset derivatives Fair value	163,673	110,109
Liability derivatives Fair value	72,662	51,380
Customer-related derivatives | Other
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Notional	2,162,302	1,834,962
Asset derivatives Fair value	11,151	19,971
Liability derivatives Fair value	$ 14,294	$ 18,308

DERIVATIVES (Gains (Losses on A

DERIVATIVES (Gains (Losses on All Derivatives) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cross-currency swaps | Net Interest Income | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	$ 0	$ 0	$ 174
Interest rate swaps | Net Interest Income | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	0	2,397	(4,891)
Pay fixed-receive variable interest rate swaps | Interest expense on borrowings | Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	33,881	(10,152)	(6,397)
Pay variable receive-fixed interest rate swap | Interest income on loans | Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	(24,346)	9,104	2,353
Forward commitments to sell loans | Miscellaneous income, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	(4,362)	(9,033)	8,034
Interest rate lock commitments | Miscellaneous income, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	572	(211)	(224)
Mortgage servicing | Miscellaneous income, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	(7,560)	2,075	1,552
Customer-related derivatives | Miscellaneous income, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	34,987	16,703	14,861
Foreign exchange | Miscellaneous income, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	2,259	6,520	5,189
Interest rate swaps, caps, and options | Miscellaneous income, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	11,901	10,897	4,450
Interest rate swaps, caps, and options | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	0	6,060	51,862
Total return settlement | Other administrative expenses
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	0	0	(4,365)
Other | Miscellaneous income, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on all derivatives	$ (4,030)	$ 1,747	$ 3,495

DERIVATIVES (Offsetting of Fina

DERIVATIVES (Offsetting of Financial Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets, Total derivatives subject to a master netting arrangement or similar arrangement	$ 515,808	$ 461,139
Gross Amounts Offset in the Consolidated Balance Sheet, Total Derivative Assets	6,570	6,731
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	509,238	454,408
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments, Total Derivative Assets	1,066	2,021
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received, Total Derivative Assets	138,967	81,051
Gross Amounts Not Offset in the Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	369,205	371,336
Total derivatives not subject to a master netting arrangement or similar arrangement	2,677	2,105
Gross Amounts of Recognized Assets, Total Derivative Assets	518,485	463,244
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Total Derivative Assets	511,915	456,513
Gross Amounts Not Offset in the Consolidated Balance Sheet - Net Amount, Total Derivative Assets	371,882	373,441
Other derivative activities
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets, Total derivatives subject to a master netting arrangement or similar arrangement	460,822	411,697
Gross Amounts Offset in the Consolidated Balance Sheet, Total Derivative Assets	6,570	6,731
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	454,252	404,966
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments, Total Derivative Assets	1,066	2,021
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received, Total Derivative Assets	116,516	77,975
Gross Amounts Not Offset in the Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	336,670	324,970
Cash flow hedges
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets, Total derivatives subject to a master netting arrangement or similar arrangement	54,986	49,442
Gross Amounts Offset in the Consolidated Balance Sheet, Total Derivative Assets	0	0
Net Amounts of Assets Presented in the Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	54,986	49,442
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments, Total Derivative Assets	0	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received, Total Derivative Assets	22,451	3,076
Gross Amounts Not Offset in the Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	$ 32,535	$ 46,366

DERIVATIVES (Offsetting of Fi_2

DERIVATIVES (Offsetting of Financial Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities, Total derivatives subject to a master netting arrangement or similar arrangement	$ 492,610	$ 427,663
Gross Amounts Offset in the Consolidated Balance Sheet	13,422	16,236
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	479,188	411,427
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments	0	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Pledged	321,897	166,338
Gross Amounts Not Offset in the Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	157,291	245,089
Total derivatives not subject to a master netting arrangement or similar arrangement	4,821	148
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Pledged, Total derivatives not subject to a master netting arrangement or similar arrangement	3,827
Gross Amounts Not Offset in the Consolidated Balance Sheet, Net Amount, Total derivatives not subject to a master netting arrangement or similar arrangement	994
Gross Amounts of Recognized Liabilities, Total Derivative Liabilities	497,431	427,811
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Total Derivative Liabilities	484,009	411,575
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Pledged, Total Derivative Liabilities	325,724
Gross Amounts Not Offset in the Consolidated Balance Sheet, Net Amount, Total Derivatives Liabilities	158,285	245,237
Other derivative activities
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities, Total derivatives subject to a master netting arrangement or similar arrangement	392,338	342,752
Gross Amounts Offset in the Consolidated Balance Sheet	13,422	16,236
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	378,916	326,516
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments	0	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Pledged	316,285	165,716
Gross Amounts Not Offset in the Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	62,631	160,800
Cash flow hedges
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities, Total derivatives subject to a master netting arrangement or similar arrangement	100,272	84,911
Gross Amounts Offset in the Consolidated Balance Sheet	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet, Total derivatives subject to a master netting arrangement or similar arrangement	100,272	84,911
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments	0	0
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Pledged	5,612	622
Gross Amounts Not Offset in the Consolidated Balance Sheet, Net Amount, Total derivatives subject to a master netting arrangement or similar arrangement	$ 94,660	$ 84,289

INCOME TAXES (Narrative) (Detai

INCOME TAXES (Narrative) (Details) $ in Thousands	12 Months Ended			36 Months Ended	60 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2009USD ($)transaction	Dec. 31, 2005USD ($)	Dec. 31, 2007USD ($)	Dec. 31, 2016USD ($)
Income Tax Disclosure [Abstract]
One-time tax benefit resulting from re-valuation of net deferred tax liability		$ (427,300)
Valuation allowance	$ 300,584	235,920
Increase in valuation allowance	64,700
Deferred income taxes on bad debt reserve	28,700
Bad debt reserve	112,100
Net unrecognized tax benefit reserves	81,599
Income Tax Contingency [Line Items]
Number of financing transactions related to lawsuit | transaction			2
Transaction amount related to lawsuit seeking refund of taxes paid			$ 1,200,000
Disallowed interest expense and transaction costs deductions			74,600
Penalties and interest expense			$ 92,500
Tax reserve	36,800
Settled Litigation
Income Tax Contingency [Line Items]
Tax reserve						$ 230,100
Foreign
Income Tax Contingency [Line Items]
Foreign taxes paid					$ 264,000
U.K. | Settled Litigation
Income Tax Contingency [Line Items]
Foreign taxes paid				$ 132,000
Subsidiary
Income Tax Contingency [Line Items]
Liability on unremitted earnings resulting from TCJA	$ 25,100	$ 25,100

INCOME TAXES (Income Taxes from

INCOME TAXES (Income Taxes from Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Foreign	$ 13,183	$ 7,288	$ 30,983
Federal	(68,160)	24,335	71,429
State	64,002	7,951	(2,646)
Total current	9,025	39,574	99,766
Deferred:
Foreign	16,882	(15,065)	(36,039)
Federal	360,780	(193,837)	143,494
State	39,213	12,288	106,494
Total deferred	416,875	(196,614)	213,949
Income tax provision/(benefit)	$ 425,900	$ (157,040)	$ 313,715

INCOME TAXES (Reconciliation of

INCOME TAXES (Reconciliation of Statutory and Effective Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal income tax at statutory rate	21.00%	35.00%	35.00%
Valuation allowance	4.60%	0.90%	(5.00%)
Tax-exempt income	(0.80%)	(1.90%)	(1.60%)
Section 162(m) limitation	0.20%	0.00%	0.00%
Non-deductible FDIC insurance premiums	0.80%	0.00%	0.00%
BOLI	(0.90%)	(2.80%)	(2.10%)
State income taxes, net of federal tax benefit	5.90%	2.60%	5.70%
General business tax credits	(1.70%)	(2.10%)	(2.10%)
Electric vehicle credits	(0.70%)	(3.00%)	(2.70%)
Basis in SC	3.00%	3.40%	3.10%
Uncertain tax position reserve	(0.30%)	(0.40%)	3.30%
Tax reform	0.00%	(53.30%)	0.00%
Other	(1.00%)	2.00%	(0.70%)
Effective tax rate	30.10%	(19.60%)	32.90%

INCOME TAXES (Deferred Tax Asse

INCOME TAXES (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
ALLL	$ 208,507	$ 214,873
Internal Revenue Code (IRC) Section 475 mark to market adjustment	296,145	520,256
Unrealized loss on available-for-sale securities	76,915	57,325
Unrealized loss on derivatives	11,340	13,217
Held to maturity	5,901	0
Capital loss carryforwards	22,661	28,873
Net operating loss carryforwards	1,836,767	921,498
Non-solicitation payments	87	237
Employee benefits	98,735	112,206
General business credit & other tax credit carryforwards	670,502	627,969
Broker commissions paid on originated mortgage loans	11,073	11,179
Minimum tax credit carryforwards	87,822	164,661
Recourse reserves	5,346	5,143
Deferred interest expense	66,146	55,552
Depreciation and amortization	111,438	0
Other	153,370	120,450
Total gross deferred tax assets	3,662,755	2,853,439
Valuation allowance	(300,584)	(235,920)
Total deferred tax assets	3,362,171	2,617,519
Deferred tax liabilities:
Purchase accounting adjustments	81,151	82,217
Deferred income	38,448	20,562
Originated MSR	42,625	38,775
Change in Control deferred gain	375,573	345,014
Leasing transactions	3,270,042	2,076,602
Depreciation and amortization	0	122,417
Other	141,782	125,570
Total gross deferred tax liabilities	3,949,621	2,811,157
Net deferred tax (liability)	$ (587,450)	$ (193,638)

INCOME TAXES (Deferred Tax Carr

INCOME TAXES (Deferred Tax Carryforwards and Valuation Allowances) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 1,712,321
State net operating loss carryforwards	124,446
General business credit carryforward	670,502	$ 627,969
Minimum tax credit carryforward	87,822	164,661
Capital loss carryforward	22,661	28,873
Deferred tax timing differences	0
Total	2,617,752
Operating Loss Carryforwards [Line Items]
Valuation allowance	300,584	$ 235,920
Operating loss carryforwards | Federal
Operating Loss Carryforwards [Line Items]
Valuation allowance	131,332
Operating loss carryforwards | State
Operating Loss Carryforwards [Line Items]
Valuation allowance	5,841
General business credit carryforward
Operating Loss Carryforwards [Line Items]
Valuation allowance	78,427
Minimum tax credit carryforward
Operating Loss Carryforwards [Line Items]
Valuation allowance	4,723
Capital loss carryforward
Operating Loss Carryforwards [Line Items]
Valuation allowance	22,661
Deferred tax timing differences
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ 57,600

INCOME TAXES (Changes in Liabil

INCOME TAXES (Changes in Liability Related to Uncertain Tax Positions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits at beginning of period	$ 90,486	$ 99,129	$ 286,122
Additions based on tax positions related to 2016	1,005	987	18,828
Additions for tax positions of prior years	3,557	4,605	42,152
Reductions for tax positions of prior years	(1,610)	(2,710)	(237,822)
Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations	(5,577)	(11,525)	(4,237)
Settlements	(91)		(5,914)
Gross unrecognized tax benefits at end of period	87,770	90,486	99,129
Less: Federal, state and local income tax benefits	(6,171)
Net unrecognized tax benefit reserves	81,599
Unrecognized Tax Benefits
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits at beginning of period	48,688	55,756	259,863
Additions based on tax positions related to 2016	1,005	987	17,323
Additions for tax positions of prior years	2,030	2,728	4,644
Reductions for tax positions of prior years	(1,545)	(784)	(218,994)
Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations	(4,813)	(9,999)	(4,194)
Settlements	(62)		(2,886)
Gross unrecognized tax benefits at end of period	45,303	48,688	55,756
Gross net unrecognized tax benefits that if recognized would impact the effective tax rate at December 31, 2018	45,303
Accrued Interest and Penalties
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits at beginning of period	41,798	43,373	26,259
Additions based on tax positions related to 2016	0	0	1,505
Additions for tax positions of prior years	1,527	1,877	37,508
Reductions for tax positions of prior years	(65)	(1,926)	(18,828)
Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations	(764)	(1,526)	(43)
Settlements	(29)		(3,028)
Gross unrecognized tax benefits at end of period	42,467	$ 41,798	$ 43,373
Gross net unrecognized tax benefits that if recognized would impact the effective tax rate at December 31, 2018	$ 42,467

FAIR VALUE (Fair Value Measurem

FAIR VALUE (Fair Value Measurements, Recurring) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financial assets:
Other investments - trading securities	$ 10	$ 1
RICs held-for-investment	126,300	186,500
Other assets - derivatives	511,915	456,513
Total MSRs	152,121	149,197
Financial liabilities:
Other liabilities - derivatives	484,009	411,575
Recurring
Financial assets:
AFS investment securities	11,632,987	14,402,369
Other investments - trading securities	10	1
RICs held-for-investment	126,312	186,471
LHFS	209,506	197,691
MSRs	149,660	145,993
Other assets - derivatives	518,485	463,244
Total financial assets	12,636,960	15,395,769
Financial liabilities:
Other liabilities - derivatives	497,431	427,811
Total financial liabilities	497,431	427,811
Recurring | U.S. Treasury securities
Financial assets:
AFS investment securities	1,804,745	998,112
Recurring | Corporate debt
Financial assets:
AFS investment securities	160,114	11,660
Recurring | ABS
Financial assets:
AFS investment securities	436,837	507,162
Recurring | State and municipal securities
Financial assets:
AFS investment securities	16	23
Recurring | MBS
Financial assets:
AFS investment securities	9,231,275	12,885,412
Recurring | Equity securities
Financial assets:
Equity securities	10,800	10,800
Recurring | Level 1
Financial assets:
AFS investment securities	526,364	139,615
Other investments - trading securities	4	1
RICs held-for-investment	0	0
LHFS	0	0
MSRs	0	0
Other assets - derivatives	0	0
Total financial assets	526,368	139,616
Financial liabilities:
Other liabilities - derivatives	0	0
Total financial liabilities	0	0
Recurring | Level 1 | U.S. Treasury securities
Financial assets:
AFS investment securities	526,364	139,615
Recurring | Level 1 | Corporate debt
Financial assets:
AFS investment securities	0	0
Recurring | Level 1 | ABS
Financial assets:
AFS investment securities	0	0
Recurring | Level 1 | State and municipal securities
Financial assets:
AFS investment securities	0	0
Recurring | Level 1 | MBS
Financial assets:
AFS investment securities	0	0
Recurring | Level 2
Financial assets:
AFS investment securities	10,779,424	13,912,502
Other investments - trading securities	6	0
RICs held-for-investment	0	0
LHFS	209,506	197,691
MSRs	0	0
Other assets - derivatives	515,781	461,139
Total financial assets	11,504,717	14,571,332
Financial liabilities:
Other liabilities - derivatives	496,593	427,217
Total financial liabilities	496,593	427,217
Recurring | Level 2 | U.S. Treasury securities
Financial assets:
AFS investment securities	1,278,381	858,497
Recurring | Level 2 | Corporate debt
Financial assets:
AFS investment securities	160,114	11,660
Recurring | Level 2 | ABS
Financial assets:
AFS investment securities	109,638	156,910
Recurring | Level 2 | State and municipal securities
Financial assets:
AFS investment securities	16	23
Recurring | Level 2 | MBS
Financial assets:
AFS investment securities	$ 9,231,275	12,885,412
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of level 3 assets to total assets held at fair value	4.80%
Percentage of level 3 assets to total assets	0.40%
Financial assets:
AFS investment securities	$ 327,199	350,252
Other investments - trading securities	0	0
RICs held-for-investment	126,312	186,471
LHFS	0	0
MSRs	149,660	145,993
Other assets - derivatives	2,704	2,105
Total financial assets	605,875	684,821
Financial liabilities:
Other liabilities - derivatives	838	594
Total financial liabilities	838	594
Recurring | Level 3 | U.S. Treasury securities
Financial assets:
AFS investment securities	0	0
Recurring | Level 3 | Corporate debt
Financial assets:
AFS investment securities	0	0
Recurring | Level 3 | ABS
Financial assets:
AFS investment securities	327,199	350,252
Recurring | Level 3 | State and municipal securities
Financial assets:
AFS investment securities	0	0
Recurring | Level 3 | MBS
Financial assets:
AFS investment securities	$ 0	$ 0

FAIR VALUE (Fair Value Measur_2

FAIR VALUE (Fair Value Measurements, Non-recurring) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 126,300	$ 186,500
Total carrying value of the loans	6,216,533	7,199,999
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	97,886	126,592
Vehicle inventory	342,617	325,203
LHFS	1,073,795	2,324,830
MSRs	9,386	9,273
Nonrecurring | Impaired commercial LHFI
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	374,648	583,175
Total carrying value of the loans	479,400	491,500
Nonrecurring | Auto loans impaired due to bankruptcy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	189,114	121,578
Nonrecurring | Impaired personal loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
LHFS	1,100,000	1,100,000
Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	0	0
Vehicle inventory	0	0
LHFS	0	0
MSRs	0	0
Nonrecurring | Level 1 | Impaired commercial LHFI
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	5,182	0
Nonrecurring | Level 1 | Auto loans impaired due to bankruptcy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	16,678	20,011
Vehicle inventory	342,617	325,203
LHFS	0	0
MSRs	0	0
Nonrecurring | Level 2 | Impaired commercial LHFI
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	150,208	226,832
Nonrecurring | Level 2 | Auto loans impaired due to bankruptcy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	189,114	121,578
Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	81,208	106,581
Vehicle inventory	0	0
LHFS	1,073,795	2,324,830
MSRs	9,386	9,273
Nonrecurring | Level 3 | Impaired commercial LHFI
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	219,258	356,343
Nonrecurring | Level 3 | Auto loans impaired due to bankruptcy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 0	$ 0

FAIR VALUE (Fair Value Adjustme

FAIR VALUE (Fair Value Adjustments) (Details) - Nonrecurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Impaired LHFI | Provision for credit losses
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value adjustment	$ (58,818)	$ (73,925)	$ (99,082)
Foreclosed assets | Miscellaneous income, net
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value adjustment	(12,137)	(13,505)	(8,339)
LHFS | Provision for credit losses
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value adjustment	(387)	(3,700)	0
LHFS | Miscellaneous income, net
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value adjustment	(382,298)	(386,422)	(424,121)
Auto loans impaired due to bankruptcy | Provision for credit losses
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value adjustment	(93,277)	(75,194)	0
Goodwill impairment | Impairment of goodwill
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value adjustment	0	(10,536)	0
MSRs | Miscellaneous income, net
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value adjustment	$ (743)	$ (549)	$ 503

FAIR VALUE (Reconciliation of A

FAIR VALUE (Reconciliation of Assets and Liabilities Using Level 3 Inputs) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)factor	Dec. 31, 2017USD ($)	Jan. 28, 2014USD ($)
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Number of primary factors driving gains | factor	3
RICs HFI
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Unpaid principal balance on previously charged-off RIC portfolio			$ 3,000,000
Level 3 | Recurring
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balances, beginning of period	$ 684,230	$ 1,149,326
Losses in OCI	(3,323)	(9,570)
Gains/(losses) in earnings	23,600	55,328
Additions/Issuances	19,409	37,459
Settlements	(118,879)	(548,313)
Balances, end of period	605,037	684,230
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	23,028	55,539
Level 3 | Recurring | Investments AFS
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balances, beginning of period	350,252	814,567
Losses in OCI	(3,323)	(9,570)
Gains/(losses) in earnings	0	0
Additions/Issuances	0	0
Settlements	(19,730)	(454,745)
Balances, end of period	327,199	350,252
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	0	0
Level 3 | Recurring | RICs HFI
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balances, beginning of period	186,471	217,170
Losses in OCI	0	0
Gains/(losses) in earnings	17,018	54,363
Additions/Issuances	6,631	21,671
Settlements	(83,808)	(106,733)
Balances, end of period	126,312	186,471
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	17,018	54,363
Level 3 | Recurring | MSRs
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balances, beginning of period	145,993	146,589
Losses in OCI	0	0
Gains/(losses) in earnings	7,906	1,967
Additions/Issuances	12,778	15,788
Settlements	(17,017)	(18,351)
Balances, end of period	149,660	145,993
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	7,906	1,967
Level 3 | Recurring | Derivatives, net
Fair Value, Assets, Unobservable Input Reconciliation [Roll Forward]
Balances, beginning of period	1,514	(29,000)
Losses in OCI	0	0
Gains/(losses) in earnings	(1,324)	(1,002)
Additions/Issuances	0	0
Settlements	1,676	31,516
Balances, end of period	1,866	1,514
Changes in unrealized gains (losses) included in earnings related to balances still held at end of period	$ (1,896)	$ (791)

FAIR VALUE (Sensitivity Analysi

FAIR VALUE (Sensitivity Analysis of Fair Value, Mortgage Servicing Rights) (Details) - MSRs $ in Millions	Dec. 31, 2018USD ($)
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Sensitivity analysis of fair value, impact of 10 percent adverse change in prepayment speed	$ (5.1)
Sensitivity analysis of fair value, impact of 20 percent adverse change in prepayment speed	(9.9)
Sensitivity analysis of fair value, impact of 10 percent adverse change in discount rate	(5.4)
Sensitivity analysis of fair value, impact of 20 percent adverse change in discount rate	$ (10.5)

FAIR VALUE (Quantitative Inform

FAIR VALUE (Quantitative Information) (Details) $ in Thousands	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Financial Assets:
RICs held-for-investment	$ 126,300	$ 186,500
MSRs	152,121	149,197
Level 3 | Financing bonds
Financial Assets:
ABS	$ 303,224	$ 304,727
Level 3 | Financing bonds | Discount Rate | Minimum
Financial Assets:
ABS, Unobservable Inputs (as a percent)	0.0268	0.0216
Level 3 | Financing bonds | Discount Rate | Maximum
Financial Assets:
ABS, Unobservable Inputs (as a percent)	0.0273	0.0290
Level 3 | Financing bonds | Discount Rate | Weighted Average
Financial Assets:
ABS, Unobservable Inputs (as a percent)	0.0269	0.0228
Level 3 | Sale-leaseback securities
Financial Assets:
ABS	$ 23,975	$ 45,525
Level 3 | Sale-leaseback securities | Offered Quotes
Financial Assets:
ABS, Unobservable Inputs (as a percent)	1.1028	1.2019
Level 3 | RICs HFI
Financial Assets:
RICs held-for-investment	$ 126,312	$ 186,471
Level 3 | RICs HFI | Discount Rate | Minimum
Financial Assets:
RICs HFI, Unobservable Inputs (as a percent)	0.0950	0.0950
Level 3 | RICs HFI | Discount Rate | Maximum
Financial Assets:
RICs HFI, Unobservable Inputs (as a percent)	0.1450	0.1450
Level 3 | RICs HFI | Discount Rate | Weighted Average
Financial Assets:
RICs HFI, Unobservable Inputs (as a percent)	0.1255	0.1237
Level 3 | RICs HFI | CPR
Financial Assets:
RICs HFI, Unobservable Inputs (as a percent)	0.0666	0.0666
Level 3 | RICs HFI | Recovery Rate | Minimum
Financial Assets:
RICs HFI, Unobservable Inputs (as a percent)	0.2500	0.2500
Level 3 | RICs HFI | Recovery Rate | Maximum
Financial Assets:
RICs HFI, Unobservable Inputs (as a percent)	0.4300	0.4300
Level 3 | RICs HFI | Recovery Rate | Weighted Average
Financial Assets:
RICs HFI, Unobservable Inputs (as a percent)	0.4160	0.4151
Level 3 | Personal LHFS
Financial Assets:
LHFS	$ 1,068,757	$ 1,062,090
Level 3 | Personal LHFS | Discount Rate | Minimum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.1500	0.1500
Level 3 | Personal LHFS | Discount Rate | Maximum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.2500	0.2000
Level 3 | Personal LHFS | Market Participant View | Minimum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.7000	0.7000
Level 3 | Personal LHFS | Market Participant View | Maximum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.8000	0.8000
Level 3 | Personal LHFS | Default Rate | Minimum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.3000	0.3000
Level 3 | Personal LHFS | Default Rate | Maximum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.4000	0.4000
Level 3 | Personal LHFS | Net Principal & Interest Payment Rate | Minimum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.7000	0.7000
Level 3 | Personal LHFS | Net Principal & Interest Payment Rate | Maximum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.8500	0.8500
Level 3 | Personal LHFS | Loss Severity Rate | Minimum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.9000	0.9000
Level 3 | Personal LHFS | Loss Severity Rate | Maximum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)	0.9500	0.9500
Level 3 | RICs HFS
Financial Assets:
LHFS		$ 1,101,049
Level 3 | RICs HFS | Discount Rate | Minimum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)		0.0300
Level 3 | RICs HFS | Discount Rate | Maximum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)		0.0600
Level 3 | RICs HFS | Default Rate | Minimum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)		0.0300
Level 3 | RICs HFS | Default Rate | Maximum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)		0.0400
Level 3 | RICs HFS | Loss Severity Rate | Minimum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)		0.5000
Level 3 | RICs HFS | Loss Severity Rate | Maximum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)		0.6000
Level 3 | RICs HFS | Prepayment Rate | Minimum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)		0.1500
Level 3 | RICs HFS | Prepayment Rate | Maximum
Financial Assets:
LHFS, Unobservable Inputs (as a percent)		0.2000
Level 3 | MSRs
Financial Assets:
MSRs	$ 149,660	$ 145,993
Level 3 | MSRs | Discount Rate
Financial Assets:
MSRs, Unobservable Inputs (as a percent)	0.0971	0.0990
Level 3 | MSRs | CPR | Minimum
Financial Assets:
MSRs, Unobservable Inputs (as a percent)	0.0706	0.0006
Level 3 | MSRs | CPR | Maximum
Financial Assets:
MSRs, Unobservable Inputs (as a percent)	1	0.4695
Level 3 | MSRs | CPR | Weighted Average
Financial Assets:
MSRs, Unobservable Inputs (as a percent)	0.0922	0.0980

FAIR VALUE (Fair Value of Finan

FAIR VALUE (Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financial assets:
Investment in debt securities HTM	$ 2,676,049	$ 1,773,938
Other investments - trading securities	10	1
LHFI, net	83,148,738	76,795,794
Derivatives	511,915	456,513
Equity securities in other investments	10,995	0
Financial liabilities:
Derivatives	484,009	411,575
Recurring
Financial assets:
Investment in debt securities AFS	11,632,987	14,402,369
Other investments - trading securities	10	1
LHFS	209,506	197,691
MSRs	149,660	145,993
Derivatives	518,485	463,244
Financial liabilities:
Derivatives	497,431	427,811
Recurring | Equity securities
Financial assets:
Equity securities	10,800	10,800
Level 1 | Recurring
Financial assets:
Investment in debt securities AFS	526,364	139,615
Other investments - trading securities	4	1
LHFS	0	0
MSRs	0	0
Derivatives	0	0
Financial liabilities:
Derivatives	0	0
Level 2 | Recurring
Financial assets:
Investment in debt securities AFS	10,779,424	13,912,502
Other investments - trading securities	6	0
LHFS	209,506	197,691
MSRs	0	0
Derivatives	515,781	461,139
Financial liabilities:
Derivatives	496,593	427,217
Level 3 | Recurring
Financial assets:
Investment in debt securities AFS	327,199	350,252
Other investments - trading securities	0	0
LHFS	0	0
MSRs	149,660	145,993
Derivatives	2,704	2,105
Financial liabilities:
Derivatives	838	594
Carrying Value
Financial assets:
Cash and cash equivalents	7,790,593	6,519,967
Investment in debt securities AFS	11,632,987	14,402,369
Investment in debt securities HTM	2,750,680	1,799,808
Other investments - trading securities	10	1
LHFI, net	83,148,738	76,795,794
LHFS	1,283,278	2,522,486
Restricted cash	2,931,711	3,818,807
MSRs	152,121	149,197
Derivatives	518,485	463,244
Financial liabilities:
Deposits	61,511,380	60,831,103
Borrowings and other debt obligations	44,953,784	39,003,313
Derivatives	497,431	427,811
Fair Value
Financial assets:
Cash and cash equivalents	7,790,593	6,519,967
Investment in debt securities AFS	11,632,987	14,402,369
Investment in debt securities HTM	2,676,049	1,773,938
Other investments - trading securities	10	1
LHFI, net	83,415,697	78,579,144
LHFS	1,283,301	2,522,521
Restricted cash	2,931,711	3,818,807
MSRs	159,046	155,266
Derivatives	518,485	463,244
Financial liabilities:
Deposits	61,456,268	60,864,110
Borrowings and other debt obligations	45,083,518	39,335,087
Derivatives	497,431	427,811
Fair Value | Level 1
Financial assets:
Cash and cash equivalents	7,790,593	6,519,967
Investment in debt securities AFS	526,364	139,615
Investment in debt securities HTM	0	0
Other investments - trading securities	4	1
LHFI, net	5,182	0
LHFS	0	0
Restricted cash	2,931,711	3,818,807
MSRs	0	0
Derivatives	0	0
Financial liabilities:
Deposits	54,039,848	55,456,511
Borrowings and other debt obligations	0	0
Derivatives	0	0
Fair Value | Level 2
Financial assets:
Cash and cash equivalents	0	0
Investment in debt securities AFS	10,779,424	13,912,502
Investment in debt securities HTM	2,676,049	1,773,938
Other investments - trading securities	6	0
LHFI, net	150,208	136,832
LHFS	209,506	197,691
Restricted cash	0	0
MSRs	0	0
Derivatives	515,781	461,139
Financial liabilities:
Deposits	7,416,420	5,407,599
Borrowings and other debt obligations	31,494,126	23,281,166
Derivatives	496,593	427,217
Fair Value | Level 3
Financial assets:
Cash and cash equivalents	0	0
Investment in debt securities AFS	327,199	350,252
Investment in debt securities HTM	0	0
Other investments - trading securities	0	0
LHFI, net	83,260,307	78,442,312
LHFS	1,073,795	2,324,830
Restricted cash	0	0
MSRs	159,046	155,266
Derivatives	2,704	2,105
Financial liabilities:
Deposits	0	0
Borrowings and other debt obligations	13,589,392	16,053,921
Derivatives	$ 838	$ 594

FAIR VALUE (Fair Value Option f

FAIR VALUE (Fair Value Option for Financial Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jan. 28, 2014	Dec. 31, 2018	Dec. 31, 2017
Fair Value
Nonaccrual loans		$ 7,630	$ 15,023
Aggregate UPB
Nonaccrual loans		10,427	19,836
Difference
Nonaccrual loans		$ (2,797)	(4,813)
LHFS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Threshold period for discontinuing and reversing accrual of interest (more than)		90 days
Fair Value
LHFS		$ 209,506	197,691
Aggregate UPB
LHFS		204,061	194,928
Difference
LHFS		5,445	2,763
RICs HFI
Fair Value
RICs HFI		126,312	186,471
Aggregate UPB
RICs HFI		142,882	211,580
Difference
RICs HFI		$ (16,570)	(25,109)
SC | RICs HFI
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Threshold period for discontinuing and reversing accrual of interest (more than)	60 days	60 days
Fair Value
RICs HFI	$ 1,900,000
Aggregate UPB
RICs HFI	$ 2,600,000
Residential mortgages
Difference
MSRs		$ 149,700	146,000
Principal balance of loans serviced for others		$ 14,400,000	$ 14,900,000

NON-INTEREST INCOME AND OTHER_3

NON-INTEREST INCOME AND OTHER EXPENSES (Schedule of Non-Interest Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Consumer and commercial fees	$ 568,147	$ 616,438	$ 689,839
Lease income	2,375,596	2,017,775	1,839,307
Mortgage banking income, net	34,612
BOLI	58,939
Capital market revenue	165,392
Net gain on sale of operating leases	202,793
Asset and wealth management fees	165,765
Loss on sale of non-mortgage loans	(351,751)
Other miscellaneous income, net	31,532
Net (losses)/gains on sale of investment securities	(6,717)	(2,444)	57,503
TOTAL NON-INTEREST INCOME	3,244,308	2,901,253	2,755,705
Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue [Line Items]
Consumer and commercial fees	565,137	616,438	689,839
Lease income		2,017,775	1,839,307
Mortgage banking income, net		56,659	63,790
BOLI		66,784	57,796
Capital market revenue		195,906	190,647
Net gain on sale of operating leases		127,156	66,909
Asset and wealth management fees		147,749	148,514
Loss on sale of non-mortgage loans		(370,289)	(399,312)
Other miscellaneous income, net		45,519	40,712
Net (losses)/gains on sale of investment securities		(2,444)	57,503
TOTAL NON-INTEREST INCOME	$ 3,227,989	$ 2,901,253	$ 2,755,705

NON-INTEREST INCOME AND OTHER_4

NON-INTEREST INCOME AND OTHER EXPENSES (Disaggregation by Revenue Source) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Lease income	$ 2,375,596	$ 2,017,775	$ 1,839,307
Miscellaneous income/(loss)	(105,650)	(149,709)	(174,916)
Net (losses)/gains on sale of investment securities	(6,717)	(2,444)	57,503
Out-of-scope of revenue from contracts with customers	2,557,600	2,212,838	2,063,320
Non-interest income	3,244,308	2,901,253	2,755,705
Depository services
Disaggregation of Revenue [Line Items]
In-scope of revenue from contracts with customers	236,381
Non-interest income		242,995	232,993
Commission and trailer fees
Disaggregation of Revenue [Line Items]
In-scope of revenue from contracts with customers	143,733
Non-interest income		136,497	159,275
Interchange income, net
Disaggregation of Revenue [Line Items]
In-scope of revenue from contracts with customers	60,258
Non-interest income		58,525	53,294
Underwriting service fees
Disaggregation of Revenue [Line Items]
In-scope of revenue from contracts with customers	71,536
Non-interest income		97,143	99,366
Asset and wealth management fees
Disaggregation of Revenue [Line Items]
In-scope of revenue from contracts with customers	138,108
Non-interest income		112,533	113,850
Other revenue from contracts with customers
Disaggregation of Revenue [Line Items]
In-scope of revenue from contracts with customers	36,692
Non-interest income		40,722	33,607
Total In-scope of revenue from contracts with customers
Disaggregation of Revenue [Line Items]
In-scope of revenue from contracts with customers	686,708
Non-interest income		688,415	692,385
Consumer and commercial fees
Disaggregation of Revenue [Line Items]
Out-of-scope of revenue from contracts with customers	$ 294,371	$ 347,216	$ 341,426

NON-INTEREST INCOME AND OTHER_5

NON-INTEREST INCOME AND OTHER EXPENSES (Schedule of Other Expense) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue from Contract with Customer [Abstract]
Amortization of intangibles	$ 60,650,000	$ 61,491,000	$ 70,034,000
Deposit insurance premiums and other expenses	61,983,000	70,661,000	77,976,000
Loss on debt extinguishment	3,470,000	30,349,000	114,232,000
Impairment of goodwill	0	10,536,000	0
Other administrative expenses	461,291,000	484,992,000	418,911,000
Other miscellaneous expenses	21,595,000	21,128,000	1,741,000
Total Other expenses	$ 608,989,000	$ 679,157,000	$ 682,894,000

STOCK-BASED COMPENSATION (SC -

STOCK-BASED COMPENSATION (SC - Narrative) (Details) - USD ($)	Jan. 23, 2014	Dec. 28, 2013	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2013	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount recognized related to stock options and restricted stock units within compensation expense			$ 7,700,000	$ 13,000,000	$ 8,800,000
Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted (in shares)			0	0
SC
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options granted in period	$ 10,200,000
Compensation not yet recognized, stock options			$ 300,000
Number of options granted (in shares)			0
SC | Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period	3 years
SC | Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period	5 years
Compensation not yet recognized, stock options			$ 700,000
SC | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period			10 years
Compensation not yet recognized, period for recognition			1 year 5 months 12 days
SC | MEP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock awards available for grant (in shares)							29,400,000
SC | Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock awards available for grant (in shares)		583,890
Common stock issued (in shares)						5,192,641
Stock vesting period		5 years
Employee benefits and share-based compensation			$ 0	$ 5,500,000	$ 700,000
SC | Omnibus Incentive Plan | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award holding period			1 year
SC | Omnibus Incentive Plan | RSUs | Vested Immediately
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period			3 years
SC | Omnibus Incentive Plan | RSUs | Vest Ratably
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock vesting period			5 years

STOCK-BASED COMPENSATION (SC _2

STOCK-BASED COMPENSATION (SC - Stock Options Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Aggregate Intrinsic Value
Options expected to vest after end of period	$ 110
SC
Shares
Options outstanding at beginning of period (in shares)	1,695,008
Exercised (in shares)	(863,811)
Expired (in shares)	(92,885)
Forfeited (in shares)	(92,936)
Options outstanding at end of period (in shares)	645,376	1,695,008
Options exercisable at end of period (in shares)	557,555
Options expected to vest after end of period (in shares)	87,821
Weighted Average Exercise Price
Options outstanding at beginning of period (in usd per share)	$ 12.39
Exercised (in usd per share)	9.50
Expired (in usd per share)	23.27
Forfeited (in usd per share)	23.06
Options outstanding at end of period (in usd per share)	13.15	$ 12.39
Options exercisable at end of period (in usd per share)	12.07
Options expected to vest after end of period (in usd per share)	$ 20.03
Weighted Average Remaining Contractual Term (Years)
Options outstanding at end of period	4 years 1 day	4 years 8 months 12 days
Options exercisable at end of period	3 years 8 months 12 days
Options expected to vest after end of period	5 years 7 months 12 days
Aggregate Intrinsic Value
Options outstanding at beginning of period	$ 12,058
Exercised	7,918
Options outstanding at end of period	3,682	$ 12,058
Options exercisable at end of period	$ 3,572

STOCK-BASED COMPENSATION (SC _3

STOCK-BASED COMPENSATION (SC - Change in Non-vested Shares) (Details) - SC - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2016
Shares
Non-vested at beginning of period (in shares)	239,838
Granted (in shares)	0
Vested (in shares)	(59,081)
Forfeited or expired (in shares)	(92,936)
Non-vested at end of period (in shares)	87,821
Weighted Average Grant Date Fair Value
Non-vested at beginning of period (in usd per share)	$ 7.29
Granted (in usd per share)	0	$ 3.14
Vested (in usd per share)	7.33
Forfeited or expired (in usd per share)	7.96
Non-vested at end of period (in usd per share)	$ 6.55

STOCK-BASED COMPENSATION (SC _4

STOCK-BASED COMPENSATION (SC - Fair Value Assumptions) (Details) - SC - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		1.79%
Expected life (in years)		6 years 6 months
Expected volatility (as a percent)		33.00%
Dividend yield (as a percent)		3.69%
Weighted average grant date fair value (in usd per share)	$ 0	$ 3.14

STOCK-BASED COMPENSATION (SC _5

STOCK-BASED COMPENSATION (SC - RSUs and Performance Stocks Activity) (Details) - SC - RSUs and Performance Stock Units - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Shares
Outstanding at beginning of period (in shares)	650,252
Granted (in shares)	617,279
Vested (in shares)	(522,810)
Forfeited/cancelled (in shares)	(45,922)
Outstanding at end of period (in shares)	698,799	650,252
Weighted Average Exercise Price
Outstanding at beginning of period (in usd per share)	$ 12.68
Granted (in usd per share)	16.11
Vested (in usd per share)	14.18
Forfeited/cancelled (in usd per share)	11.64
Outstanding at end of period (in usd per share)	$ 14.53	$ 12.68
Weighted Average Remaining Contractual Term (Years)	1 year 1 month 1 day	1 year 1 day
Aggregate Intrinsic Value
Outstanding at beginning of period	$ 12,108
Vested	8,616
Outstanding at end of period	$ 12,292	$ 12,108

OTHER EMPLOYEE BENEFIT PLANS (D

OTHER EMPLOYEE BENEFIT PLANS (Defined Contribution Plans) (Details) - USD ($) $ in Millions	2 Months Ended	12 Months Ended
	Mar. 15, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Contribution Plan Disclosure [Line Items]
Period of time following completion of service to participate in 401K Plan		1 month
Employer matching contribution, percent of match		100.00%
Employer matching contribution, percent of employees' gross pay		4.00%
Contributions		$ 26.8	$ 20.6	$ 21.1
SC
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of match		100.00%
Contributions		$ 14	$ 12.4	$ 11.8
Employee's maximum contributions as a percentage of base salary		75.00%
Subsequent Event
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of match	100.00%
Employer matching contribution, percent of employees' gross pay	5.00%
Maximum | SC
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of employees' gross pay		6.00%
Three Percent of Compensation
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of match			100.00%
Employer matching contribution, percent of employees' gross pay		3.00%
Three to Five Percent of Compensation
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of match			50.00%
Three to Five Percent of Compensation | Minimum
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of employees' gross pay			3.00%
Three to Five Percent of Compensation | Maximum
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of employees' gross pay			5.00%

OTHER EMPLOYEE BENEFIT PLANS _2

OTHER EMPLOYEE BENEFIT PLANS (Defined Benefit Plans and Other Post Retirement Benefit Plans) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Accrued liabilities related to total defined benefit plan	$ 29	$ 65.9
Unfunded status of plan	$ 13.5	$ 50.5

COMMITMENTS, CONTINGENCIES AN_3

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Other Commitments) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Commitments [Line Items]
Lines of credit outstanding	$ 88,700	$ 90,900
Total commitments	31,836,778	31,129,148
Commitments to extend credit
Other Commitments [Line Items]
Other commitments	30,269,311	29,475,864
Letters of credit
Other Commitments [Line Items]
Letters of credit	1,488,714	1,559,297
Unsecured revolving lines of credit
Other Commitments [Line Items]
Lines of credit outstanding	28,145	27,938
Recourse exposure on sold loans
Other Commitments [Line Items]
Other commitments	49,733	46,572
Commitments to sell loans
Other Commitments [Line Items]
Other commitments	$ 875	$ 19,477

COMMITMENTS, CONTINGENCIES AN_4

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Commitments to Extend Credit) (Details) - USD ($) $ in Billions	Dec. 31, 2018	Dec. 31, 2017
Commitments to extend credit
Other Commitments [Line Items]
Commitments that can be canceled without notice	$ 5.7	$ 6.4

COMMITMENTS, CONTINGENCIES AN_5

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Letters of Credit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Commitments [Line Items]
Reserve for unfunded lending commitments	$ 95,500	$ 109,111	$ 122,418	$ 149,021
Lines of credit outstanding	$ 88,700	90,900
Letters of credit
Other Commitments [Line Items]
Commitments, weighted average term	1 year 4 months 13 days
Letters of credit	$ 1,488,714	1,559,297
Reserve for unfunded lending commitments	$ 4,600	$ 18,200

COMMITMENTS, CONTINGENCIES AN_6

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Commitments to Sell Loans) (Details)	12 Months Ended
	Dec. 31, 2018
Commitments to sell loans
Other Commitments [Line Items]
Forward contracts maturity period (less than)	1 year

COMMITMENTS, CONTINGENCIES AN_7

COMMITMENTS, CONTINGENCIES AND GUARANTEES (SC Commitments) (Details) - SC - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Consumer arrangements
Long-term Purchase Commitment [Line Items]
Contingencies	$ 2,138	$ 6,326
Chrysler | Revenue-sharing and gain-sharing payments
Long-term Purchase Commitment [Line Items]
Commitments	7,001	6,580
Bank of America | Servicer performance fee
Long-term Purchase Commitment [Line Items]
Commitments	6,353	8,072
CBP | Loss-sharing payments
Long-term Purchase Commitment [Line Items]
Commitments	$ 3,708	$ 5,625

COMMITMENTS, CONTINGENCIES AN_8

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Chrysler Agreement) (Details) - SC - Chrysler - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Other Commitments [Line Items]
Financing dedicated to FCA retail financing	$ 4,500,000,000
Commitment to meet escalating penetration rates, period	5 years
Revenue-sharing and gain-sharing payments
Other Commitments [Line Items]
Commitments	$ 7,001,000	$ 6,580,000
Minimum
Other Commitments [Line Items]
Funding available for dealer inventory financing	$ 5,000,000,000

COMMITMENTS, CONTINGENCIES AN_9

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Agreement with Bank of America) (Details) - SC - Bank of America - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 31, 2017
Other Commitments [Line Items]
Commitments			$ 300,000,000
Servicer payments period	6 years
Servicer performance fee
Other Commitments [Line Items]
Other commitments	$ 6,353,000	$ 8,072,000

COMMITMENTS, CONTINGENCIES A_10

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Agreement with CBP) (Details) - SC - CBP - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Other Commitments [Line Items]
Loss-sharing payment percentage	0.50%
Loss-sharing payments
Other Commitments [Line Items]
Other commitments	$ 3,708	$ 5,625

COMMITMENTS, CONTINGENCIES A_11

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Other Contingencies) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
SC | Consumer arrangements
Loss Contingencies [Line Items]
Contingencies	$ 2,138	$ 6,326

COMMITMENTS, CONTINGENCIES A_12

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Bluestem) (Details) - SC - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Commitments [Line Items]
Purchase obligation	$ 15.4	$ 11.5
Purchase commitment, repurchase rate	9.99%
Purchase commitment, exercise of repurchase rights, retainer rate	20.00%
Bluestem | Purchase New Advances on Personal Revolving Financing Receivable
Other Commitments [Line Items]
Other commitments	$ 3,100	3,900	$ 4,000
Purchases from other commitments	1,200
Bluestem | Purchase of Receivables Related to New Opened Customer Accounts
Other Commitments [Line Items]
Purchases from other commitments	$ 300	$ 300

COMMITMENTS, CONTINGENCIES A_13

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Others) (Details) - SC - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Other Commitments [Line Items]
Minimum sales commitment, charged off loan receivables	$ 350,000,000
Threshold for sales subject to market price check (over)	275,000,000
Minimum sales commitment, loans receivable, written off, remaining	$ 64,000,000	$ 98,900,000

COMMITMENTS, CONTINGENCIES A_14

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Impact From Hurricanes) (Details) - Hurricane $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017USD ($)hurricane	Dec. 31, 2018USD ($)
Greater Texas, Florida and Puerto Rico
Unusual or Infrequent Item, or Both [Line Items]
Number of significant hurricanes | hurricane	3
Accrual for environmental loss contingency	$ 110	$ 25
Puerto Rico
Unusual or Infrequent Item, or Both [Line Items]
Decrease in allowance for credit losses		$ 50

COMMITMENTS, CONTINGENCIES A_15

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Legal and Regulatory Proceedings) (Details) $ in Thousands	1 Months Ended			12 Months Ended
	Nov. 30, 2018USD ($)	Jan. 31, 2018claim	Feb. 28, 2015USD ($)	Dec. 31, 2018USD ($)claim	Jul. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Oct. 31, 2013USD ($)
Loss Contingencies [Line Items]
Accrued legal and regulatory liabilities				$ 215,200		$ 161,800
Bonds (more than)				$ 44,953,784
Puerto Rico FINRA Arbitrations
Loss Contingencies [Line Items]
Number of FINRA arbitration cases | claim				589
Number of claims that remain pending | claim				420
Puerto Rico Closed-End Funds Shareholder Derivative and Class Action | Puerto Rico
Loss Contingencies [Line Items]
Bonds (more than)							$ 180,000
Closed-end funds							$ 101,000
SC | Civil Penalty to the SEC
Loss Contingencies [Line Items]
Amount agreed to be paid				$ 1,500
SC | Settlement with CFPB
Loss Contingencies [Line Items]
Amount agreed to be paid	$ 2,500
SC | Parmelee Lawsuit
Loss Contingencies [Line Items]
Estimate of possible loss					$ 9,500
Number of claims dismissed | claim		2
SC | Violation of Service Members Civil Relief Act
Loss Contingencies [Line Items]
SCRA compliance period			5 years
SC | Violation of Service Members Civil Relief Act | Civil Fine
Loss Contingencies [Line Items]
Damages sought, value			$ 55
SC | Violation of Service Members Civil Relief Act | Lost Equity for Each Repossession
Loss Contingencies [Line Items]
Damages sought, value			10
SC | Violation of Service Members Civil Relief Act | Sought to Collect Repossession-related Fees
Loss Contingencies [Line Items]
Damages sought, value			5
Maximum
Loss Contingencies [Line Items]
Estimate of possible loss				$ 286,000		$ 255,000
Minimum | SC | Violation of Service Members Civil Relief Act | Civil Fine to Affected Service Members
Loss Contingencies [Line Items]
Damages sought, value			$ 9,400

COMMITMENTS, CONTINGENCIES A_16

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Leases) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Term of lease (in excess of)	1 year
Lease Payments
2019	$ 146,108
2020	116,871
2021	96,784
2022	83,028
2023	70,158
Thereafter	169,046
Total	681,995
Future Minimum Expected Sublease Income
2019	(4,660)
2020	(2,527)
2021	(675)
2022	(550)
2023	(562)
Thereafter	(535)
Total	(9,509)
Net Payments
2019	141,448
2020	114,344
2021	96,109
2022	82,478
2023	69,596
Thereafter	168,511
Total	672,486
Rental expense	149,600	$ 150,000	$ 143,900
Sublease income	$ 6,800	$ 8,900	$ 8,100

RELATED PARTY TRANSACTIONS (Con

RELATED PARTY TRANSACTIONS (Contributions from Santander) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Contribution from shareholder	$ 85,035	$ 9,000	$ 0
Santander
Related Party Transaction [Line Items]
Cash contribution		15,300
Affiliated Entity | Santander
Related Party Transaction [Line Items]
Cash contribution	85,035	9,000
Net assets acquired	0	2,747
Adjustment to book value of assets purchased on January 1	277	0
Deferred tax asset on purchased assets	3,156	0
Contribution from shareholder	$ 88,468	$ 11,747

RELATED PARTY TRANSACTIONS (Sto

RELATED PARTY TRANSACTIONS (Stockholder's Equity) (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Dec. 31, 2018	Dec. 31, 2017
Santander
Related Party Transaction [Line Items]
Net capital contribution			$ 2,800
Cash contribution			15,300
Return of capital			(12,500)
Santander | Affiliated Entity
Related Party Transaction [Line Items]
Cash contribution		$ 85,035	9,000
Adjustment to book value of assets purchased on January 1		277	$ 0
Santander | Produban Servicios Informaticos Generales S.L. and Ingenieria De Software Bancario S.L. | Affiliated Entity
Related Party Transaction [Line Items]
Adjustment to book value of assets purchased on January 1		300
Deferred tax asset on purchased assets		$ 3,200
Santander | Produban Servicios Informaticos Generales S.L. and Ingenieria De Software Bancario S.L. | Affiliated Entity | Net Book Value, Net Assets Acquired
Related Party Transaction [Line Items]
Amount of related party transactions	$ 2,800
Santander | Produban Servicios Informaticos Generales S.L. and Ingenieria De Software Bancario S.L. | Affiliated Entity | Fair Value, Net Assets Acquired
Related Party Transaction [Line Items]
Amount of related party transactions	15,300
SBNA | Affiliated Entity
Related Party Transaction [Line Items]
Assets contributed	$ 6,200

RELATED PARTY TRANSACTIONS (Loa

RELATED PARTY TRANSACTIONS (Loan Sales) (Details) - SBNA - Santander - Affiliated Entity $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)
Related Party Transaction [Line Items]
Sale of loans securitized	$ 372.1
Loss (Gain) on sale, excluding lower of cost of market adjustments (if any)	$ 2.4

RELATED PARTY TRANSACTIONS (Let

RELATED PARTY TRANSACTIONS (Letters of Credit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Letters of credit | Agreement Between Santander and Bank
Related Party Transaction [Line Items]
Average unfunded balance outstanding	$ 82.7	$ 82.9

RELATED PARTY TRANSACTIONS (Deb

RELATED PARTY TRANSACTIONS (Debt and Other Securities) (Details) $ in Billions	Dec. 31, 2018USD ($)
Related Party Transaction [Line Items]
Public securities	$ 8.5
Outstanding principal of public securities owned (as a percent)	0.40%

RELATED PARTY TRANSACTIONS (Der

RELATED PARTY TRANSACTIONS (Derivatives) (Details) - USD ($) $ in Billions	Dec. 31, 2018	Dec. 31, 2017
Abbey National Treasury Services
Related Party Transaction [Line Items]
Notional values		$ 0.1
Affiliated Entity | Santander
Related Party Transaction [Line Items]
Notional values	$ 2.7	$ 2

RELATED PARTY TRANSACTIONS (Ser

RELATED PARTY TRANSACTIONS (Service Agreements) (Details) - Santander - Affiliated Entity - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Development and Implementation of Global Projects
Related Party Transaction [Line Items]
Expenses from transactions with related party	$ 17,100,000
Rental Payments
Related Party Transaction [Line Items]
Expenses from transactions with related party	3,900,000	$ 11,200,000	$ 6,100,000
NW Services-Aquanima | Provide Procurement Services
Related Party Transaction [Line Items]
Expenses from transactions with related party	5,400,000	3,700,000	3,600,000
Fees payable	0	0
Geoban, S.A. | Provide Administrative Services, Consulting And Professional Services, Application Support and Back-Office Services
Related Party Transaction [Line Items]
Expenses from transactions with related party	1,800,000	3,300,000	15,100,000
Fees payable	0	200,000
Santander Bank-Offices, Globales Mayoristas S.A. | Provide Administrative Services and Bank-Office Support
Related Party Transaction [Line Items]
Expenses from transactions with related party	1,900,000	1,100,000	1,800,000
Fees payable	0	0
Isban | Provide Information Technology Development, Support and Administration
Related Party Transaction [Line Items]
Expenses from transactions with related party	38,700,000	77,900,000	91,700,000
Fees payable	800,000	26,300,000
Produban | Provide Professional Services, and Administration and Support of Information Technology Production Systems, Telecommunications and Internal/External Applications
Related Party Transaction [Line Items]
Expenses from transactions with related party	74,900,000	110,700,000	$ 123,400,000
Fees payable	18,100,000	$ 10,200,000
Santander Global Technology | Provide Information Technology Development, Support and Administration
Related Party Transaction [Line Items]
Expenses from transactions with related party	5,500,000
Fees payable	$ 21,900,000

RELATED PARTY TRANSACTIONS (Rev

RELATED PARTY TRANSACTIONS (Revolving Agreements) (Details) - SC - USD ($)	1 Months Ended	12 Months Ended
	Aug. 31, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Guarantee fee, percent	0.125%
Affiliated Entity | Santander
Related Party Transaction [Line Items]
Accrued interest payable		$ 0	$ 1,400,000
Guarantee fee expense		5,000,000	6,000,000	$ 6,400,000
Fees payable		1,900,000	7,600,000
Affiliated Entity | Santander | Revolving Credit Facility
Related Party Transaction [Line Items]
Committed revolving credit agreement		1,750,000,000
Affiliated Entity | Santander | Line of Credit
Related Party Transaction [Line Items]
Line of credit, unused fees		$ 11,600,000	$ 51,700,000	$ 69,900,000

RELATED PARTY TRANSACTIONS (Sec

RELATED PARTY TRANSACTIONS (Securitizations) (Details) - SC - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Due to/from affiliates	$ 76,000
Santander | Affiliated Entity
Related Party Transaction [Line Items]
Servicing fee income	35,058	$ 12,346
Loss (Gain) on sale, excluding lower of cost of market adjustments (if any)	20,736	13,026
Servicing fees receivable	2,983	1,848
Collections due to Santander	$ 15,968	$ 12,961

RELATED PARTY TRANSACTIONS (Oth

RELATED PARTY TRANSACTIONS (Other Related-Party Transactions) (Details) ft² in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)ft²		Dec. 31, 2017USD ($)		Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Related Party Transaction [Line Items]
Term of lease	1 year
Future minimum lease payments due	$ 681,995
Restricted cash	2,931,711	[1]	$ 3,818,807	[1]	$ 3,000,000	$ 2,600,000
Cash and cash equivalents	7,790,593		6,519,967
Deposits	61,511,380		60,831,103
Affiliated Entity | Santander
Related Party Transaction [Line Items]
Notional values	$ 2,700,000		2,000,000
SC
Related Party Transaction [Line Items]
Cost-method investments, impairment					6,000
SC | Management
Related Party Transaction [Line Items]
Operating leases, area of leased property (in square feet) | ft²	373
Lease payments	$ 4,800		5,000		$ 5,000
Term of lease	9 years
Future minimum lease payments due	$ 55,600
SC | Affiliated Entity | Santander
Related Party Transaction [Line Items]
Loans at fair value	2,900,000		2,600,000
Accounts payable to related parties, current	1,900		7,600
SC | Subsidiaries | Banco Santander Puerto Rico | Demand Deposits
Related Party Transaction [Line Items]
Restricted cash	8,900		106,600
BSI | Affiliated Entity
Related Party Transaction [Line Items]
Short-term borrowings	59,900		78,700
Cash and cash equivalents	46,200		152,700
Notional values	1,500,000		1,600,000
Deposits	55,700
SIS | Affiliated Entity | Santander | Execution, Clearance and Custodies of Certain Securities Transaction in Latin America and Europe
Related Party Transaction [Line Items]
Accounts payable to related parties, current	$ 1,000,000		$ 1,100,000
[1]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.

REGULATORY MATTERS (Narrative)

REGULATORY MATTERS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Total distributions as a percentage of net income during the year plus retained net income for the prior two years	100.00%
Number of years of retained net income for distribution percentage calculation	2 years
Dividends paid on common stock	$ 410,000	$ 10,000	$ 0
Cash dividends paid to preferred stockholders	$ 10,950	$ 14,600	$ 15,128

REGULATORY MATTERS (Actual Capi

REGULATORY MATTERS (Actual Capital Balances) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Regulatory capital
Common Equity Tier 1 Capital Ratio	$ 16,758,748	$ 16,342,296
Tier 1 Capital Ratio	18,193,361	17,795,929
Total Capital Ratio	19,807,403	19,450,655
Leverage Ratio	$ 18,193,361	$ 17,795,929
Capital ratio
Common Equity Tier 1 Capital Ratio (as a percent)	15.53%	16.38%
Tier 1 Capital Ratio (as a percent)	16.86%	17.84%
Total Capital Ratio (as a percent)	18.35%	19.50%
Leverage Ratio (as a percent)	14.03%	14.17%
SBNA
Regulatory capital
Common Equity Tier 1 Capital Ratio	$ 10,179,299	$ 10,014,774
Tier 1 Capital Ratio	10,179,299	10,014,774
Total Capital Ratio	10,819,641	10,668,635
Leverage Ratio	$ 10,179,299	$ 10,014,774
Capital ratio
Common Equity Tier 1 Capital Ratio (as a percent)	17.14%	18.17%
Tier 1 Capital Ratio (as a percent)	17.14%	18.17%
Total Capital Ratio (as a percent)	18.22%	19.36%
Leverage Ratio (as a percent)	14.08%	13.86%

BUSINESS SEGMENT INFORMATION (N

BUSINESS SEGMENT INFORMATION (Narrative) (Details)	May 01, 2013	Mar. 15, 2019segment	Dec. 31, 2018USD ($)
FCA
Segment Reporting Information [Line Items]
Private label financing agreement, term	10 years
CIB
Segment Reporting Information [Line Items]
Minimum annual revenue to service corporations | $			$ 500,000,000
Commercial Banking | Subsequent Event
Segment Reporting Information [Line Items]
Number of reportable segments | segment		2

BUSINESS SEGMENT INFORMATION (S

BUSINESS SEGMENT INFORMATION (Segment Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
Segment Reporting Information [Line Items]
Net interest income	$ 6,344,850	$ 6,423,950	$ 6,564,692
Non-interest income	3,244,308	2,901,253	2,755,705
Total non-interest income			2,755,705
Provision for / (release of) credit losses	2,339,898	2,759,944	2,979,725
Total expenses	5,832,325	5,764,324	5,386,194
INCOME BEFORE INCOME TAX PROVISION	1,416,935	800,935	954,478
Intersegment revenue/(expense)	0	0	0
Total assets	135,634,285	128,274,525		$ 128,276,447
Reportable Segments | Consumer & Business Banking
Segment Reporting Information [Line Items]
Net interest income	1,301,671	1,115,169	981,951
Non-interest income	308,614	356,936
Total non-interest income			384,210
Provision for / (release of) credit losses	100,523	85,115	56,446
Total expenses	1,487,835	1,500,815	1,511,427
INCOME BEFORE INCOME TAX PROVISION	21,927	(113,825)	(201,712)
Intersegment revenue/(expense)	2,507	2,330	42,168
Total assets	21,024,741	18,714,285
Reportable Segments | Commercial Banking
Segment Reporting Information [Line Items]
Net interest income	639,558	630,078	638,001
Non-interest income	87,803	70,219
Total non-interest income			87,144
Provision for / (release of) credit losses	(19,405)	29,586	85,910
Total expenses	327,291	324,385	318,400
INCOME BEFORE INCOME TAX PROVISION	419,475	346,326	320,835
Intersegment revenue/(expense)	9,420	6,137	28,464
Total assets	25,712,309	25,318,068
Reportable Segments | CIB
Segment Reporting Information [Line Items]
Net interest income	136,402	153,622	239,074
Non-interest income	195,210	186,749
Total non-interest income			241,992
Provision for / (release of) credit losses	9,335	33,275	7,952
Total expenses	235,979	218,696	228,999
INCOME BEFORE INCOME TAX PROVISION	86,298	88,400	244,115
Intersegment revenue/(expense)	(12,362)	(8,086)	(1,728)
Total assets	8,521,004	6,949,373
Reportable Segments | Other
Segment Reporting Information [Line Items]
Net interest income	239,664	255,096	51,736
Non-interest income	405,319	548,806
Total non-interest income			622,145
Provision for / (release of) credit losses	24,254	93,165	52,490
Total expenses	887,681	955,292	1,065,027
INCOME BEFORE INCOME TAX PROVISION	(266,952)	(244,555)	(443,636)
Intersegment revenue/(expense)	435	(381)	(68,904)
Total assets	36,416,376	37,890,000
Reportable Segments | SC
Segment Reporting Information [Line Items]
Net interest income	3,958,280	4,114,600	4,448,535
Non-interest income	2,297,517	1,793,408
Total non-interest income			1,432,634
Provision for / (release of) credit losses	2,205,585	2,363,812	2,468,199
Total expenses	2,857,944	2,740,190	2,252,259
INCOME BEFORE INCOME TAX PROVISION	1,192,268	804,006	1,160,711
Intersegment revenue/(expense)	0	0	0
Total assets	43,959,855	39,402,799
SC Purchase Price Adjustments | SC
Segment Reporting Information [Line Items]
Net interest income	31,083	124,551	187,296
Non-interest income	9,678	(9,177)
Total non-interest income			42,271
Provision for / (release of) credit losses	19,606	154,991	308,728
Total expenses	47,173	44,066	56,557
INCOME BEFORE INCOME TAX PROVISION	(26,018)	(83,683)	(135,718)
Intersegment revenue/(expense)	0	0	0
Total assets	0	0
Eliminations
Segment Reporting Information [Line Items]
Net interest income	38,192	30,834	18,099
Non-interest income	(59,833)	(45,688)
Total non-interest income			(54,691)
Provision for / (release of) credit losses	0	0	0
Total expenses	(11,578)	(19,120)	(46,475)
INCOME BEFORE INCOME TAX PROVISION	(10,063)	4,266	9,883
Intersegment revenue/(expense)	0	0	$ 0
Total assets	$ 0	$ 0

PARENT COMPANY FINANCIAL INFO_3

PARENT COMPANY FINANCIAL INFORMATION (Balance Sheets) (Details) - USD ($) $ in Thousands		Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents		$ 7,790,593			$ 6,519,967
Available-for-sale (AFS) at fair value		11,632,987			14,413,183
Investment in subsidiaries:
Premises and equipment, net	[1]	805,940			849,061
Equity method investments		204,687			194,434
Restricted cash		2,931,711	[2]		3,818,807	[2]	$ 3,000,000	$ 2,600,000
Deferred tax assets, net		625,087			771,652
Other assets		3,653,336	[2],[3]	$ 3,642,813	3,646,405	[2],[3]
TOTAL ASSETS		135,634,285		128,276,447	128,274,525
Liabilities and stockholder's equity
Borrowings and other debt obligations	[2]	44,953,784			39,003,313
Deferred tax liabilities, net		1,212,538			965,290
Other liabilities		912,775	[2]	798,025	799,403	[2]
TOTAL LIABILITIES		111,787,053		$ 104,582,315	104,583,693
Stockholder's equity		21,321,057			21,173,981
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY		135,634,285			128,274,525
Parent Company
Assets
Cash and cash equivalents		3,562,789			4,369,307
Available-for-sale (AFS) at fair value		247,510			248,692
Loans to non-bank subsidiaries		3,500,000			3,000,000
Investment in subsidiaries:
Bank subsidiary		11,219,433			11,160,429
Non-bank subsidiaries		10,915,872			10,375,573
Premises and equipment, net		52,447			84,873
Equity method investments		3,801			9,324
Restricted cash		79,555			74,156		$ 74,000	$ 73,100
Deferred tax assets, net		66			29,096
Other assets		348,268			284,500
TOTAL ASSETS		29,929,741			29,635,950
Liabilities and stockholder's equity
Borrowings and other debt obligations		8,351,685			8,149,565
Borrowings from non-bank subsidiaries		145,165			142,554
Deferred tax liabilities, net		61,332			65,814
Other liabilities		235,144			245,249
TOTAL LIABILITIES		8,793,326			8,603,182
Stockholder's equity		21,136,415			21,032,768
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY		$ 29,929,741			$ 29,635,950
[1]	Net of accumulated depreciation of $1.4 billion and $1.4 billion at December 31, 2018 and December 31, 2017, respectively.
[2]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.
[3]	Includes mortgage servicing rights ("MSRs") of $149.7 million and $146.0 million at December 31, 2018 and December 31, 2017, respectively, for which the Company has elected the FVO. See Note 16 to these Consolidated Financial Statements for additional information.

PARENT COMPANY FINANCIAL INFO_4

PARENT COMPANY FINANCIAL INFORMATION (Statements of Operations and Comprehensive Income) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Condensed Income Statements, Captions [Line Items]
Income from equity method investments		$ 4,324		$ (28,323)		$ (11,054)
Interest expense		1,724,203		1,452,129		1,425,059
Income tax (benefit)/provision		425,900		(157,040)		313,715
Equity in undistributed earnings of:
NET INCOME ATTRIBUTABLE TO SHUSA		707,404		552,350		362,884
Other comprehensive income, net of tax:
Net unrealized (losses)/gains on cash flow hedge derivative financial instruments	[1],[2]	(3,796)		337		9,856
Net unrealized losses recognized on investment securities		(80,891)	[2]	(9,744)	[2]	(34,812)
Amortization of defined benefit plans	[2]	560		4,184		2,278
TOTAL OTHER COMPREHENSIVE (LOSS) / GAIN, NET OF TAX		(84,127)		(5,223)		(22,678)
COMPREHENSIVE INCOME ATTRIBUTABLE TO SHUSA		623,277		547,127		340,206
Parent Company
Condensed Income Statements, Captions [Line Items]
Interest income		123,389		67,369		12,350
Income from equity method investments		78		2,737		185
Other income		67,100		52,584		34,213
Net gains on sale of investment securities		0		1,845		0
Total income		190,567		124,535		46,748
Interest expense		288,006		214,280		155,256
Other expense		301,418		349,882		361,229
Total expense		589,424		564,162		516,485
Loss before income taxes and equity in earnings of subsidiaries		(398,857)		(439,627)		(469,737)
Income tax (benefit)/provision		(51,114)		18,165		(121,840)
Loss before equity in earnings of subsidiaries		(347,743)		(457,792)		(347,897)
Equity in undistributed earnings of:
Bank subsidiary		489,452		239,887		230,017
Non-bank subsidiaries		565,695		770,255		480,764
NET INCOME ATTRIBUTABLE TO SHUSA		707,404		552,350		362,884
Other comprehensive income, net of tax:
Net unrealized (losses)/gains on cash flow hedge derivative financial instruments		(3,796)		337		9,856
Net unrealized losses recognized on investment securities		(80,891)		(9,744)		(34,812)
Amortization of defined benefit plans		560		4,184		2,278
TOTAL OTHER COMPREHENSIVE (LOSS) / GAIN, NET OF TAX		(84,127)		(5,223)		(22,678)
COMPREHENSIVE INCOME ATTRIBUTABLE TO SHUSA		$ 623,277		$ 547,127		$ 340,206
[1]	Excludes $3.1 million, $6.0 million, $10.8 million of other comprehensive income attributable to NCI for the years ended December 31, 2018, 2017, 2016, respectively.
[2]	Excludes $39.1 million impact of other comprehensive income reclassified to Retained earnings as a result of the adoption of Accounting Standards Update ("ASU") 2018-02.

PARENT COMPANY FINANCIAL INFO_5

PARENT COMPANY FINANCIAL INFORMATION (Statement of Cash Flows) (Details) - USD ($) $ in Thousands		Jul. 02, 2018	Jul. 01, 2017	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Condensed Cash Flow Statements, Captions [Line Items]
Beginning restricted cash				$ 3,818,807	[1]	$ 3,000,000		$ 2,600,000
Net change in restricted cash				(887,100)		801,900		386,400
Ending restricted cash				2,931,711	[1]	3,818,807	[1]	3,000,000
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income				707,404		552,350		362,884
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred tax expense/(benefit)				416,875		(196,614)		213,949
Undistributed earnings of:
Net gain on sale of investment securities				6,717		2,444		(57,547)
Stock based compensation expense				913		4,674		17,677
Equity earnings from equity method investments				(4,324)		28,323		11,054
Depreciation, amortization and accretion				1,913,225		1,606,862		1,272,415
Loss on debt extinguishment				3,470		30,349		114,232
NET CASH PROVIDED BY OPERATING ACTIVITIES				7,015,061		4,964,060		5,271,542
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of AFS investment securities				1,262,409		3,216,595		6,755,299
Proceeds from prepayments and maturities of AFS investment securities				2,616,417		5,231,910		10,209,477
Purchases of AFS investment securities				(2,421,286)		(6,248,059)		(12,205,062)
Purchases of premises and equipment				(159,887)		(164,111)		(234,075)
NET CASH (USED IN)/PROVIDED BY INVESTING ACTIVITIES				(12,460,839)		3,281,179		577,786
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends to preferred stockholders				(10,950)		(14,600)		(15,128)
Dividends paid on common stock				(410,000)		(10,000)		0
Capital contribution from shareholder				85,035		9,000		0
Redemption of preferred stock				(200,000)		0		(75,000)
NET CASH PROVIDED BY/(USED IN) FINANCING ACTIVITIES				5,829,308		(10,959,272)		(4,874,036)
NET INCREASE/(DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	[2]			383,530		(2,714,033)		975,292
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD	[2]			10,338,774		13,052,807		12,077,515
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	[2]			10,722,304		10,338,774		13,052,807
NON-CASH TRANSACTIONS
Capital distribution to shareholder				0		0		30,789
Contribution from shareholder		$ 4,400	$ 322,100
SFS
NON-CASH TRANSACTIONS
Contribution from shareholder	[3]			0		322,078		0
SC
NON-CASH TRANSACTIONS
Contribution from shareholder				0		707,589		0
SAM
NON-CASH TRANSACTIONS
Contribution from shareholder	[3]			4,396		0		0
Parent Company
Condensed Cash Flow Statements, Captions [Line Items]
Beginning restricted cash				74,156		74,000		73,100
Net change in restricted cash				5,400		133		963
Ending restricted cash				79,555		74,156		74,000
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income				707,404		552,350		362,884
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred tax expense/(benefit)				24,277		75,053		(94,551)
Undistributed earnings of:
Bank subsidiary				(489,452)		(239,887)		(230,017)
Non-bank subsidiaries				(565,695)		(770,255)		(480,764)
Net gain on sale of investment securities				0		(1,845)		0
Stock based compensation expense				0		(164)		395
Equity earnings from equity method investments				(78)		(2,737)		(185)
Dividends from investment in subsidiaries				592,797		150,330		0
Depreciation, amortization and accretion				44,388		45,475		24,201
Loss on debt extinguishment				3,955		5,582		0
Net change in other assets and other liabilities				(60,256)		51,267		11,484
NET CASH PROVIDED BY OPERATING ACTIVITIES				257,340		(134,831)		(406,553)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of AFS investment securities				0		741,250		0
Proceeds from prepayments and maturities of AFS investment securities				0		0		2,000,000
Purchases of AFS investment securities				0		0		(2,990,800)
Net capital (contributed to)/returned from subsidiaries				(208,622)		(37,380)		45,616
Originations of loans to subsidiaries				(4,295,000)		(5,105,000)		0
Repayments of loans by subsidiaries				3,795,000		2,405,000		0
Purchases of premises and equipment				(15,333)		(22,493)		(33,762)
NET CASH (USED IN)/PROVIDED BY INVESTING ACTIVITIES				(723,955)		(2,018,623)		(978,946)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of parent company debt obligations				(1,224,474)		(931,252)		(1,976,037)
Net proceeds received from Parent Company senior notes and senior credit facility				1,423,274		4,656,279		3,094,249
Net change in borrowings from non-bank subsidiaries				2,611		1,400		1,010
Dividends to preferred stockholders				(10,950)		(14,600)		(15,128)
Dividends paid on common stock				(410,000)		(10,000)		0
Capital contribution from shareholder				85,035		9,000		0
Impact of SC stock option activity				0		0		69
Redemption of preferred stock				(200,000)		0		(75,000)
NET CASH PROVIDED BY/(USED IN) FINANCING ACTIVITIES				(334,504)		3,710,827		1,029,163
NET INCREASE/(DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH				(801,119)		1,557,373		(356,336)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD				4,443,463		2,886,090		3,242,426
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD				3,642,344		4,443,463		2,886,090
NON-CASH TRANSACTIONS
Capital expenditures in accounts payable				8,174		10,729		25,027
Capital distribution to shareholder				0		0		30,789
Parent Company | SFS
NON-CASH TRANSACTIONS
Contribution from shareholder				0		322,078		0
Parent Company | SC
NON-CASH TRANSACTIONS
Contribution from shareholder				0		566,378		0
Parent Company | SAM
NON-CASH TRANSACTIONS
Contribution from shareholder				$ 4,396		$ 0		$ 0
[1]	The Company has interests in certain securitization trusts ("Trusts") that are considered variable interest entities ("VIEs") for accounting purposes. At December 31, 2018 and December 31, 2017, LHFI included $24.1 billion and $22.7 billion, Operating leases assets, net included $14.0 billion and $10.2 billion, restricted cash included $1.6 billion and $2.0 billion, other assets included $685.4 million and $747.1 million, Borrowings and other debt obligations included $31.9 billion and $28.5 billion, and Other Liabilities included $122.0 million and $198.0 million of assets or liabilities that were included within VIEs, respectively. See Note 7 to these Consolidated Financial Statements for additional information.
[2]	The beginning, ending and net change balances for the periods ended December 31, 2018, December 31, 2017, and December 31, 2016 include restricted cash balances of $3.8 billion, $2.9 billion, and $(887.1) million; $3.0 billion, $3.8 billion, and $801.9 million; and $2.6 billion, $3.0 billion, and $386.4 million, respectively.
[3]	The contributions of SFS and SAM were accounted for as non-cash transactions. Refer to Note 1 - Basis of Presentation and Accounting Policies for additional information.

Uncategorized Items - sov-20181

Label	Element	Value
Common Stock Including Additional Paid in Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (26,457,000)
Noncontrolling Interest [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 37,401,000