10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

QUARTERLY PERIOD ENDED June 30, 2017

Commission File Number 1-34073

Huntington Bancshares Incorporated

Maryland	31-0724920
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

41 South High Street, Columbus, Ohio 43287

Registrant’s telephone number, including area code (614) 480-8300

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months and (2) has been subject to such filing requirements for the past 90 days.     x  Yes    ¨  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).     x  Yes    ¨  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨  (Do not check if a smaller reporting company)
		Smaller reporting company	¨
		Emerging growth company	¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).     ¨  Yes    x  No

There were 1,090,016,469 shares of Registrant’s common stock ($0.01 par value) outstanding on June 30, 2017.

HUNTINGTON BANCSHARES INCORPORATED

INDEX

PART I. FINANCIAL INFORMATION
Item 1. Financial Statements (Unaudited)	41
Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016	41
Condensed Consolidated Statements of Income for the three months and six months ended June 30, 2017 and 2016	42
Condensed Consolidated Statements of Comprehensive Income for the three months and six months ended June 30, 2017 and 2016	44
Condensed Consolidated Statements of Changes in Shareholders’ Equity for the six months ended June 30, 2017 and 2016	45
Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2017 and 2016	46
Notes to Unaudited Condensed Consolidated Financial Statements	48
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	6
Executive Overview	7
Discussion of Results of Operations	7
Risk Management and Capital:	18
Credit Risk	19
Market Risk	28
Liquidity Risk	29
Operational Risk	30
Compliance Risk	31
Capital	31
Fair Value	33
Business Segment Discussion	33
Additional Disclosures	37
Item 3. Quantitative and Qualitative Disclosures about Market Risk	100
Item 4. Controls and Procedures	100
PART II. OTHER INFORMATION
Item 1. Legal Proceedings	101
Item 1A. Risk Factors	101
Item 6. Exhibits	102
Signatures	104

2

Glossary of Acronyms and Terms

The following listing provides a comprehensive reference of common acronyms and terms used throughout the document:

ABS	Asset-Backed Securities
ACL	Allowance for Credit Losses
AFS	Available-for-Sale
ALCO	Asset-Liability Management Committee
ALLL	Allowance for Loan and Lease Losses
ANPR	Advance Notice of Proposed Rulemaking
ASC	Accounting Standards Codification
ATM	Automated Teller Machine
AULC	Allowance for Unfunded Loan Commitments
Basel III	Refers to the final rule issued by the FRB and OCC and published in the Federal Register on October 11, 2013
BHC	Bank Holding Companies
BHC Act	Bank Holding Company Act of 1956
C&I	Commercial and Industrial
Camco Financial	Camco Financial Corp.
CCAR	Comprehensive Capital Analysis and Review
CDO	Collateralized Debt Obligations
CDs	Certificate of Deposit
CET1	Common equity tier 1 on a transitional Basel III basis
CFPB	Bureau of Consumer Financial Protection
CISA	Cybersecurity Information Sharing Act
CMO	Collateralized Mortgage Obligations
CRA	Community Reinvestment Act
CRE	Commercial Real Estate
CREVF	Commercial Real Estate and Vehicle Finance
DIF	Deposit Insurance Fund
Dodd-Frank Act	Dodd-Frank Wall Street Reform and Consumer Protection Act
EFT	Electronic Fund Transfer
EPS	Earnings Per Share
EVE	Economic Value of Equity
FASB	Financial Accounting Standards Board
FDIC	Federal Deposit Insurance Corporation
FDICIA	Federal Deposit Insurance Corporation Improvement Act of 1991
FHA	Federal Housing Administration
FHC	Financial Holding Company
FHLB	Federal Home Loan Bank

3

FICO	Fair Isaac Corporation
FirstMerit	FirstMerit Corporation
FRB	Federal Reserve Bank
FTE	Fully-Taxable Equivalent
FTP	Funds Transfer Pricing
GAAP	Generally Accepted Accounting Principles in the United States of America
HAA	Huntington Asset Advisors, Inc.
HASI	Huntington Asset Services, Inc.
HQLA	High Quality Liquid Asset
HTM	Held-to-Maturity
IRS	Internal Revenue Service
LCR	Liquidity Coverage Ratio
LGD	Loss-Given-Default
LIBOR	London Interbank Offered Rate
LIHTC	Low Income Housing Tax Credit
LTV	Loan to Value
Macquarie	Macquarie Equipment Finance, Inc. (U.S. operations)
MBS	Mortgage-Backed Securities
MD&A	Management’s Discussion and Analysis of Financial Condition and Results of Operations
MSA	Metropolitan Statistical Area
MSR	Mortgage Servicing Rights
NAICS	North American Industry Classification System
NALs	Nonaccrual Loans
NCO	Net Charge-off
NII	Net Interest Income
NIM	Net Interest Margin
NPAs	Nonperforming Assets
N.R.	Not relevant. Denominator of calculation is a gain in the current period compared with a loss in the prior period, or vice-versa
OCC	Office of the Comptroller of the Currency
OCI	Other Comprehensive Income (Loss)
OCR	Optimal Customer Relationship
OLEM	Other Loans Especially Mentioned
OREO	Other Real Estate Owned
OTTI	Other-Than-Temporary Impairment
PD	Probability-Of-Default
Plan	Huntington Bancshares Retirement Plan
RBHPCG	Regional Banking and The Huntington Private Client Group
REIT	Real Estate Investment Trust

4

ROC	Risk Oversight Committee
RWA	Risk-Weighted Assets
SAD	Special Assets Division
SBA	Small Business Administration
SEC	Securities and Exchange Commission
SERP	Supplemental Executive Retirement Plan
SRIP	Supplemental Retirement Income Plan
TCE	Tangible Common Equity
TDR	Troubled Debt Restructured Loan
U.S. Treasury	U.S. Department of the Treasury
UCS	Uniform Classification System
Unified	Unified Financial Securities, Inc.
UPB	Unpaid Principal Balance
USDA	U.S. Department of Agriculture
VIE	Variable Interest Entity
XBRL	eXtensible Business Reporting Language

5

PART I. FINANCIAL INFORMATION

When we refer to “we”, “our”, and “us”, and "the Company" in this report, we mean Huntington Bancshares Incorporated and our consolidated subsidiaries, unless the context indicates that we refer only to the parent company, Huntington Bancshares Incorporated. When we refer to the “Bank” in this report, we mean our only bank subsidiary, The Huntington National Bank, and its subsidiaries.

Item 2: Management’s Discussion and Analysis of Financial Condition and Results of Operations

INTRODUCTION

We are a multi-state diversified regional bank holding company organized under Maryland law in 1966 and headquartered in Columbus, Ohio. Through the Bank, we have over 150 years of servicing the financial needs of our customers. Through our subsidiaries, we provide full-service commercial and consumer banking services, mortgage banking services, automobile financing, recreational vehicle and marine financing, equipment leasing, investment management, trust services, brokerage services, insurance programs, and other financial products and services. Our 996 branches and private client group offices are located in Ohio, Illinois, Indiana, Kentucky, Michigan, Pennsylvania, West Virginia, and Wisconsin. Select financial services and other activities are also conducted in various other states. International banking services are available through the headquarters office in Columbus, Ohio. Our foreign banking activities, in total or with any individual country, are not significant.

This MD&A provides information we believe necessary for understanding our financial condition, changes in financial condition, results of operations, and cash flows. The MD&A included in our 2016 Form 10-K should be read in conjunction with this MD&A as this discussion provides only material updates to the 2016 Form 10-K. This MD&A should also be read in conjunction with the Unaudited Condensed Consolidated Financial Statements, Notes to Unaudited Condensed Consolidated Financial Statements, and other information contained in this report.

6

EXECUTIVE OVERVIEW

Summary of 2017 Second Quarter Results Compared to 2016 Second Quarter

For the quarter, we reported net income of $272 million, or $0.23 per common share, compared with $175 million, or $0.19 per common share, in the year-ago quarter (see Table 1). Reported net income was impacted by FirstMerit acquisition-related net expenses totaling $50 million pre-tax, or $0.03 per common share.

Fully-taxable equivalent net interest income was $757 million, up $241 million, or 47%. The results reflected the benefit from a $23.9 billion, or 35%, increase in average earning assets and a 25 basis point improvement in the net interest margin to 3.31%. Average earning asset growth included a $15.4 billion, or 30%, increase in average loans and leases, and an $8.5 billion, or 56%, increase in average securities, both of which were impacted by the FirstMerit acquisition. The net interest margin expansion reflected a 34 basis point increase in earning asset yields, including an approximate 15 basis point impact of purchase accounting, and a 2 basis point increase in the benefit from noninterest-bearing funds, partially offset by an 11 basis point increase in funding costs.

The provision for credit losses was $25 million consistent with the year-ago quarter. NCOs increased $19 million to $36 million, primarily as a result of Consumer charge-offs on the acquired FirstMerit portfolio. NCOs represented an annualized 0.21% of average loans and leases, which remains below our long-term target of 35 to 55 basis points.

Noninterest income was $325 million, up $54 million, or 20%. The increase was primarily a result of the FirstMerit acquisition. In addition, card and payment processing income increased due to higher credit and debit card related income and underlying customer growth. Also, service charges on deposit accounts increased reflecting continued new customer acquisition.

Noninterest expense was $694 million, up $171 million, or 33%, primarily reflecting the impact of the FirstMerit acquisition. Personnel costs increased primarily reflecting an increase in average full-time equivalent employees and an increase in acquisition-related personnel expense. Further, deposit and other insurance expense increased, as a result of the larger assessment base as well as the FDIC Large Institution Surcharge implemented during the 2016 third quarter.

The tangible common equity to tangible assets ratio was 7.41%, down 55 basis points from a year-ago. The CET1 risk-based capital ratio was 9.88% at June 30, 2017, compared to 9.80% a year ago. The regulatory tier 1 risk-based capital ratio was 11.24% compared to 11.37% at June 30, 2016. Capital ratios were impacted by the goodwill created and the issuance of common stock as part of the FirstMerit acquisition. The regulatory Tier 1 risk-based and total risk-based capital ratios benefited from the issuance of Class C preferred equity during the 2016 third quarter in exchange for FirstMerit preferred equity in conjunction with the acquisition. The total risk-based capital ratio was impacted by the repurchase of trust preferred securities during the 2016 third quarter and fourth quarter. In addition, certain trust preferred securities were acquired in the FirstMerit acquisition and subsequently were redeemed. There were no common shares repurchased over the past five quarters.

Business Overview

General

Our general business objectives are: (1) grow net interest income and fee income, (2) deliver positive operating leverage, (3) increase primary customer relationships across all business segments, (4) continue to strengthen risk management and (5) maintain capital and liquidity positions consistent with our risk appetite.

Economy

We expect ongoing consumer and business confidence to translate into private sector investment fueling continued economic momentum. We are seeing solid manufacturing and infrastructure growth in the Midwest. Businesses are adding jobs and investing more, and our pipelines have remained steady.

DISCUSSION OF RESULTS OF OPERATIONS

This section provides a review of financial performance from a consolidated perspective. It also includes a “Significant Items” section that summarizes key issues important for a complete understanding of performance trends. Key Unaudited Condensed Consolidated Balance Sheet and Unaudited Condensed Statement of Income trends are discussed. All earnings per share data are reported on a diluted basis. For additional insight on financial performance, please read this section in conjunction with the “Business Segment Discussion.”

7

Table 1 - Selected Quarterly Income Statement Data (1)
(dollar amounts in thousands, except per share amounts)
	Three Months Ended
	June 30,			March 31,			December 31,			September 30,			June 30,
	2017			2017			2016			2016			2016
Interest income	$	846,424		$	820,360		$	814,858		$	694,346		$	565,658
Interest expense	101,912			90,385			79,877			68,956			59,777
Net interest income	744,512			729,975			734,981			625,390			505,881
Provision for credit losses	24,978			67,638			74,906			63,805			24,509
Net interest income after provision for credit losses	719,534			662,337			660,075			561,585			481,372
Service charges on deposit accounts	87,582			83,420			91,577			86,847			75,613
Cards and payment processing income	52,485			47,169			49,113			44,320			39,184
Mortgage banking income	32,268			31,692			37,520			40,603			31,591
Trust and investment management services	32,232			33,869			34,016			28,923			22,497
Insurance income	15,843			15,264			16,486			15,865			15,947
Brokerage income	16,294			15,758			17,014			14,719			14,599
Capital markets fees	16,836			14,200			18,730			14,750			13,037
Bank owned life insurance income	15,322			17,542			17,067			14,452			12,536
Gain on sale of loans	12,002			12,822			24,987			7,506			9,265
Securities gains (losses)	135			(8		)	(1,771		)	1,031			656
Other Income	44,219			40,735			29,598			33,399			36,187
Total noninterest income	325,218			312,463			334,337			302,415			271,112
Personnel costs	391,997			382,000			359,755			405,024			298,949
Outside data processing and other services	75,169			87,202			88,695			91,133			63,037
Equipment	42,924			46,700			59,666			40,792			31,805
Net occupancy	52,613			67,700			49,450			41,460			30,704
Professional services	18,190			18,295			23,165			47,075			21,488
Marketing	18,843			13,923			21,478			14,438			14,773
Deposit and other insurance expense	20,418			20,099			15,772			14,940			12,187
Amortization of intangibles	14,242			14,355			14,099			9,046			3,600
Other expense	59,968			57,148			49,417			48,339			47,118
Total noninterest expense	694,364			707,422			681,497			712,247			523,661
Income before income taxes	350,388			267,378			312,915			151,753			228,823
Provision for income taxes	78,647			59,284			73,952			24,749			54,283
Net income	271,741			208,094			238,963			127,004			174,540
Dividends on preferred shares	18,889			18,878			18,865			18,537			19,874
Net income applicable to common shares	$	252,852		$	189,216		$	220,098		$	108,467		$	154,666
Average common shares—basic	1,088,934			1,086,374			1,085,253			938,578			798,167
Average common shares—diluted	1,108,527			1,108,617			1,104,358			952,081			810,371
Net income per common share—basic	$	0.23		$	0.17		$	0.20		$	0.12		$	0.19
Net income per common share—diluted	0.23			0.17			0.20			0.11			0.19
Cash dividends declared per common share	0.08			0.08			0.08			0.07			0.07
Return on average total assets	1.09		%	0.84		%	0.95		%	0.58		%	0.96		%
Return on average common shareholders’ equity	10.6			8.2			9.4			5.4			9.6
Return on average tangible common shareholders’ equity (2)	14.4			11.3			12.9			7.0			11.0
Net interest margin (3)	3.31			3.30			3.25			3.18			3.06
Efficiency ratio (4)	62.9			65.7			61.6			75.0			66.1
Effective tax rate	22.4			22.2			23.6			16.3			23.7
Revenue—FTE
Net interest income	$	744,512		$	729,975		$	734,981		$	625,390		$	505,881
FTE adjustment	12,069			12,058			12,560			10,598			10,091
Net interest income (3)	756,581			742,033			747,541			635,988			515,972
Noninterest income	325,218			312,463			334,337			302,415			271,112
Total revenue (3)	$	1,081,799		$	1,054,496		$	1,081,878		$	938,403		$	787,084

8

Table 2 - Selected Year to Date Income Statements (1)
(dollar amounts in thousands, except per share amounts)
	Six Months Ended June 30,				Change
	2017		2016		Amount			Percent
Interest income	$	1,666,784	$	1,122,909	$	543,875		48	%
Interest expense	192,297		113,962		78,335			69
Net interest income	1,474,487		1,008,947		465,540			46
Provision for credit losses	92,616		52,091		40,525			78
Net interest income after provision for credit losses	1,381,871		956,856		425,015			44
Service charges on deposit accounts	171,002		145,875		25,127			17
Cards and payment processing income	99,654		75,631		24,023			32
Mortgage banking income	63,960		50,134		13,826			28
Trust and investment management services	66,101		45,335		20,766			46
Insurance income	31,107		32,172		(1,065		)	(3	)
Brokerage income	32,052		30,101		1,951			6
Capital markets fees	31,036		26,047		4,989			19
Bank owned life insurance income	32,864		26,049		6,815			26
Gain on sale of loans	24,824		14,660		10,164			69
Securities gains	127		656		(529		)	(81	)
Other income	84,954		66,319		18,635			28
Total noninterest income	637,681		512,979		124,702			24
Personnel costs	773,997		584,346		189,651			32
Outside data processing and other services	162,371		124,915		37,456			30
Equipment	89,624		64,381		25,243			39
Net occupancy	120,313		62,180		58,133			93
Professional services	36,485		35,026		1,459			4
Marketing	32,766		27,041		5,725			21
Deposit and other insurance expense	40,517		23,395		17,122			73
Amortization of intangibles	28,597		7,312		21,285			291
Other expense	117,116		86,145		30,971			36
Total noninterest expense	1,401,786		1,014,741		387,045			38
Income before income taxes	617,766		455,094		162,672			36
Provision for income taxes	137,931		109,240		28,691			26
Net income	479,835		345,854		133,981			39
Dividends declared on preferred shares	37,767		27,872		9,895			36
Net income applicable to common shares	$	442,068	$	317,982	$	124,086		39	%
Average common shares—basic	1,087,654		796,961		290,693			36	%
Average common shares—diluted	1,108,572		809,360		299,212			37
Net income per common share—basic	$	0.41	$	0.40	$	0.01		3
Net income per common share—diluted	0.40		0.39		0.01			3
Cash dividends declared per common share	0.16		0.14		0.02			14
Revenue—FTE
Net interest income	$	1,474,487	$	1,008,947	$	465,540		46	%
FTE adjustment	24,127		19,250		4,877			25
Net interest income (3)	1,498,614		1,028,197		470,417			46
Noninterest income	637,681		512,979		124,702			24
Total revenue (3)	$	2,136,295	$	1,541,176	$	595,119		39	%

(1) Comparisons for presented periods are impacted by a number of factors. Refer to the “Significant Items” for additional discussion regarding these key factors.

(2) Net income excluding expense for amortization of intangibles for the period divided by average tangible common shareholders’ equity. Average tangible common shareholders’ equity equals average total common shareholders’ equity less average intangible assets and goodwill. Expense for amortization of intangibles and average intangible assets are net of deferred tax liability, and calculated assuming a 35% tax rate.

(3) On a fully-taxable equivalent (FTE) basis assuming a 35% tax rate.

(4) Noninterest expense less amortization of intangibles and goodwill impairment divided by the sum of FTE net interest income and noninterest income excluding securities gains.

9

Significant Items

Earnings comparisons are impacted by the Significant Items summarized below:

Mergers and Acquisitions. Significant events relating to mergers and acquisitions, and the impacts of those events on our reported results, are as follows:

• During the 2017second quarter, $50 million of noninterest expense was recorded related to the acquisition of FirstMerit. This resulted in a negative impact of $0.03 per common share.

• During the 2017 first quarter, $73 million of noninterest expense and $2 million of noninterest income was recorded related to the acquisition of FirstMerit. This resulted in a negative impact of $0.04 per common share.

• During the 2016 second quarter, $21 million of noninterest expense was recorded related to the then pending acquisition of FirstMerit. This resulted in a negative impact of $0.02 per common share.

The following table reflects the earnings impact of the above-mentioned Significant Items for periods affected:

Table 3 - Significant Items Influencing Earnings Performance Comparison
(dollar amounts in thousands, except per share amounts)
	Three Months Ended
	June 30, 2017						March 31, 2017						June 30, 2016
	Amount			EPS (1)			Amount			EPS (1)			Amount			EPS (1)
Net income	$	271,741					$	208,094					$	174,540
Earnings per share, after-tax				$	0.23					$	0.17					$	0.19
Significant Items—favorable (unfavorable) impact:	Earnings			EPS (1)			Earnings			EPS (1)			Earnings			EPS (1)
Mergers and acquisitions, net expenses	$	(50,243	)				$	(71,145	)				$	(20,789	)
Tax impact	17,585						24,901						7,213
Mergers and acquisitions, after-tax	$	(32,658	)	$	(0.03	)	$	(46,244	)	$	(0.04	)	$	(13,576	)	$	(0.02	)

(1) Based upon the quarterly average outstanding diluted common shares.

	Six Months Ended
	June 30, 2017						June 30, 2016
	After-tax			EPS (1)			After-tax			EPS (1)
Net income	$	479,835					$	345,854
Earnings per share, after-tax				$	0.40					$	0.39
Significant Items—favorable (unfavorable) impact:	Earnings			EPS (1)			Earnings			EPS (1)
Mergers and acquisitions, net expenses	$	(121,388	)				$	(27,195	)
Tax impact	42,486						9,219
Mergers and acquisitions, after-tax	$	(78,902	)	$	(0.07	)	$	(17,976	)	$	(0.03	)

(1) Based upon the year to date average outstanding diluted common shares.

10

Net Interest Income / Average Balance Sheet

The following tables detail the change in our average balance sheet and the net interest margin:

Table 4 - Consolidated Average Balance Sheet and Net Interest Margin Analysis
(dollar amounts in millions)
	Average Balances
	Three Months Ended															Change
	June 30,			March 31,			December 31,			September 30,			June 30,			2Q17 vs. 2Q16
	2017			2017			2016			2016			2016			Amount			Percent
Assets:
Interest-bearing deposits in banks	$	102		$	100		$	110		$	95		$	99		$	3		4	%
Loans held for sale	525			415			2,507			695			571			(46		)	(8	)
Securities:
Available-for-sale and other securities:
Taxable	13,135			12,801			13,734			9,785			6,904			6,231			90
Tax-exempt	3,104			3,049			3,136			2,854			2,510			594			24
Total available-for-sale and other securities	16,239			15,850			16,870			12,639			9,414			6,825			72
Trading account securities	91			137			139			49			41			50			121
Held-to-maturity securities—taxable	7,427			7,656			5,432			5,487			5,806			1,621			28
Total securities	23,756			23,643			22,441			18,175			15,261			8,495			56
Loans and leases: (1)
Commercial:
Commercial and industrial	27,992			27,922			27,727			24,957			21,344			6,648			31
Commercial real estate:
Construction	1,130			1,314			1,413			1,132			881			249			28
Commercial	5,940			6,039			5,805			5,227			4,345			1,595			37
Commercial real estate	7,070			7,353			7,218			6,359			5,226			1,844			35
Total commercial	35,062			35,276			34,945			31,316			26,570			8,492			32
Consumer:
Automobile	11,324			11,063			10,866			11,402			10,146			1,178			12
Home equity	9,958			10,072			10,101			9,260			8,416			1,542			18
Residential mortgage	7,979			7,777			7,690			7,012			6,187			1,792			29
RV and marine finance	2,039			1,874			1,844			915			—			N.R.			N.R.
Other consumer	983			919			959			817			613			370			60
Total consumer	32,283			31,705			31,460			29,406			25,362			6,921			27
Total loans and leases	67,345			66,981			66,405			60,722			51,932			15,413			30
Allowance for loan and lease losses	(672		)	(636		)	(614		)	(623		)	(616		)	(56		)	9
Net loans and leases	66,673			66,345			65,791			60,099			51,316			15,357			30
Total earning assets	91,728			91,139			91,463			79,687			67,863			23,865			35
Cash and due from banks	1,287			2,011			1,538			1,325			1,001			286			29
Intangible assets	2,373			2,387			2,421			1,547			726			1,647			227
All other assets	5,405			5,442			5,559			4,962			4,149			1,256			30
Total assets	$	100,121		$	100,343		$	100,367		$	86,898		$	73,123		$	26,998		37	%
Liabilities and Shareholders’ Equity:
Deposits:
Demand deposits—noninterest-bearing	$	21,599		$	21,730		$	23,250		$	20,033		$	16,507		$	5,092		31	%
Demand deposits—interest-bearing	17,445			16,805			15,294			12,362			8,445			9,000			107
Total demand deposits	39,044			38,535			38,544			32,395			24,952			14,092			56
Money market deposits	19,212			18,653			18,618			18,453			19,534			(322		)	(2	)
Savings and other domestic deposits	11,889			11,970			12,272			8,889			5,402			6,487			120
Core certificates of deposit	2,146			2,342			2,636			2,285			2,007			139			7
Total core deposits	72,291			71,500			72,070			62,022			51,895			20,396			39
Other domestic time deposits of $250,000 or more	479			470			391			382			402			77			19
Brokered deposits and negotiable CDs	3,783			3,969			4,273			3,904			2,909			874			30
Deposits in foreign offices	—			—			152			194			208			(208		)	—
Total deposits	76,553			75,939			76,886			66,502			55,414			21,139			38
Short-term borrowings	2,687			3,792			2,628			1,306			1,032			1,655			160
Long-term debt	8,730			8,529			8,594			8,488			7,899			831			11
Total interest-bearing liabilities	66,371			66,530			64,858			56,263			47,838			18,533			39
All other liabilities	1,557			1,661			1,833			1,608			1,416			141			10
Shareholders’ equity	10,594			10,422			10,426			8,994			7,362			3,232			44
Total liabilities and shareholders’ equity	$	100,121		$	100,343		$	100,367		$	86,898		$	73,123		$	26,998		37	%

11

Table 4 - Consolidated Average Balance Sheet and Net Interest Margin Analysis (Continued)
	Average Yield Rates (2)
	Three Months Ended
	June 30,		March 31,		December 31,		September 30,		June 30,
Fully-taxable equivalent basis (3)	2017		2017		2016		2016		2016
Assets:
Interest-bearing deposits in banks	1.53	%	1.09	%	0.64	%	0.64	%	0.25	%
Loans held for sale	3.73		3.82		2.95		3.53		3.89
Securities:
Available-for-sale and other securities:
Taxable	2.38		2.38		2.43		2.35		2.37
Tax-exempt	3.71		3.77		3.60		3.01		3.38
Total available-for-sale and other securities	2.64		2.65		2.65		2.50		2.64
Trading account securities	0.25		0.11		0.18		0.58		0.98
Held-to-maturity securities—taxable	2.38		2.36		2.43		2.41		2.44
Total securities	2.55		2.54		2.58		2.47		2.56
Loans and leases: (1)
Commercial:
Commercial and industrial	4.04		3.98		3.83		3.68		3.49
Commercial real estate:
Construction	4.26		3.95		3.65		3.76		3.70
Commercial	3.97		3.69		3.54		3.54		3.35
Commercial real estate	4.02		3.74		3.56		3.58		3.41
Total commercial	4.04		3.93		3.78		3.66		3.47
Consumer:
Automobile	3.55		3.55		3.57		3.37		3.15
Home equity	4.61		4.45		4.24		4.21		4.17
Residential mortgage	3.66		3.63		3.58		3.61		3.65
RV and marine finance	5.57		5.63		5.64		5.70		—
Other consumer	11.47		12.05		10.91		10.93		10.28
Total consumer	4.27		4.23		4.13		3.97		3.79
Total loans and leases	4.15		4.07		3.95		3.81		3.63
Total earning assets	3.75		3.70		3.60		3.52		3.41
Liabilities:
Deposits:
Demand deposits—noninterest-bearing	—		—		—		—		—
Demand deposits—interest-bearing	0.20		0.15		0.11		0.11		0.09
Total demand deposits	0.09		0.07		0.04		0.04		0.03
Money market deposits	0.31		0.26		0.24		0.24		0.24
Savings and other domestic deposits	0.21		0.22		0.25		0.21		0.11
Core certificates of deposit	0.56		0.39		0.29		0.43		0.79
Total core deposits	0.26		0.22		0.20		0.20		0.22
Other domestic time deposits of $250,000 or more	0.49		0.45		0.39		0.40		0.40
Brokered deposits and negotiable CDs	0.95		0.72		0.48		0.44		0.40
Deposits in foreign offices	—		—		0.13		0.13		0.13
Total deposits	0.31		0.26		0.23		0.22		0.23
Short-term borrowings	0.78		0.63		0.36		0.29		0.36
Long-term debt	2.49		2.33		2.19		1.97		1.85
Total interest-bearing liabilities	0.61		0.54		0.48		0.49		0.50
Net interest rate spread	3.14		3.16		3.12		3.03		2.91
Impact of noninterest-bearing funds on margin	0.17		0.14		0.13		0.15		0.15
Net interest margin	3.31	%	3.30	%	3.25	%	3.18	%	3.06	%

(1) For purposes of this analysis, NALs are reflected in the average balances of loans.

(2) Loan and lease and deposit average rates include impact of applicable derivatives, non-deferrable fees, and amortized fees.

(3) FTE yields are calculated assuming a 35% tax rate.

N.R. - Not relevant.

12

2017 Second Quarter versus 2016 Second Quarter

FTE net interest income for the 2017 second quarterincreased$241 million, or 47%, from the 2016 second quarter. This reflected the benefit from the $23.9 billion, or 35%, increase in average earning assets coupled with a 25 basis point improvement in the FTE net interest margin to 3.31%. The NIM expansion reflected a 34 basis point increase related to the mix and yield of earning assets and a 2 basis point increase in the benefit from noninterest-bearing funds, partially offset by an 11 basis point increase in funding costs. FTE net interest income during the 2017 second quarter included $34 million, or approximately 15 basis points, of purchase accounting impact.

Average earning assets for the 2017 second quarterincreased$23.9 billion, or 35%, from the year-ago quarter, primarily reflecting the impact of the FirstMerit acquisition. Average earning asset growth included a $15.4 billion, or 30%, increase in average loans and leases and an $8.5 billion, or 56%, increase in average securities. Average securities included $2.9 billion of direct purchase municipal instruments in our commercial banking segment compared to $2.3 billion in the year-ago quarter. Average residential mortgage loans increased $1.8 billion, or 29%, as we continue to see increased demand for residential mortgage loans across our footprint.

Average total deposits for the 2017 second quarterincreased$21.1 billion, or 38%, from the year-ago quarter, while average total core deposits increased$20.4 billion, or 39%. Average total interest-bearing liabilities increased$18.5 billion, or 39%, from the year-ago quarter. These increases primarily reflect the impact of the FirstMerit acquisition. Average demand deposits increased $14.1 billion, or 56%, comprised of a $9.9 billion, or 62%, increase in average commercial demand deposits and a $4.2 billion, or 46%, increase in average consumer demand deposits. Average long-term borrowings increased $0.8 billion, or 11%, reflecting the issuance of $2.0 billion and maturity of $1.6 billion of senior debt over the past five quarters.

2017 Second Quarter versus 2017 First Quarter

Compared to the 2017 first quarter, FTE net interest income increased $15 million, or 2%. The increase in the NIM reflected a 5 basis point increase in earning asset yields and a 3 basis point increase in the benefit from noninterest-bearing funds, partially offset by a 7 basis point increase in the cost of interest-bearing liabilities. The purchase accounting impact on the net interest margin was approximately 15 basis points in the 2017 second quarter compared to approximately 16 basis points in the prior quarter.

Average earning assets increased$0.6 billion, or less than 1% from the 2017 first quarter. Average loans and leases increased$0.4 billion, or less than 1%, primarily reflecting growth in residential mortgage, automobile, and RV and marine loans partially offset by a decline in average commercial real estate loans. Total commercial lending was impacted by anticipated FirstMerit-related runoff and lower utilization.

Average total core deposits increased$0.8 billion, or 1%, primarily reflecting a $0.6 billion, or 3%, increase in money market deposits and a $0.5 billion, or 1%, increase in average demand deposits. Average total debt decreased $0.9 billion, or 7%, driven by a $1.1 billion, or 29%, decrease in short-term borrowings, reflecting the maintenance of excess liquidity surrounding the branch conversion during the 2017 first quarter.

13

Table 5 - Consolidated YTD Average Balance Sheets and Net Interest Margin Analysis
(dollar amounts in millions)
	YTD Average Balances											YTD Average Rates (2)
	Six Months Ended June 30,						Change					Six Months Ended June 30,
Fully-taxable equivalent basis (1)	2017			2016			Amount			Percent		2017		2016
Assets:
Interest-bearing deposits in banks	$	101		$	98		$	3		3	%	1.31	%	0.23	%
Loans held for sale	470			502			(32		)	(6	)	3.76		3.93
Securities:
Available-for-sale and other securities:
Taxable	12,969			6,768			6,201			92		2.38		2.38
Tax-exempt	3,076			2,434			642			26		3.74		3.39
Total available-for-sale and other securities	16,045			9,202			6,843			74		2.64		2.65
Trading account securities	114			40			74			185		0.17		0.75
Held-to-maturity securities—taxable	7,541			5,930			1,611			27		2.37		2.44
Total securities	23,700			15,172			8,528			56		2.55		2.56
Loans and leases: (3)
Commercial:
Commercial and industrial	27,957			20,996			6,961			33		4.01		3.51
Commercial real estate:
Construction	1,221			902			319			35		4.09		3.60
Commercial	5,990			4,314			1,676			39		3.83		3.47
Commercial real estate	7,211			5,216			1,995			38		3.88		3.49
Total commercial	35,168			26,212			8,956			34		3.98		3.50
Consumer:
Automobile	11,194			9,938			1,256			13		3.55		3.16
Home equity	9,994			8,429			1,565			19		4.54		4.18
Residential mortgage	7,879			6,102			1,777			29		3.65		3.67
RV and marine finance	1,957			—			1,957			N.R.		5.60		—
Other consumer	972			594			378			64		11.49		10.16
Total consumer	31,996			25,063			6,933			28		4.25		3.80
Total loans and leases	67,164			51,275			15,889			31		4.11		3.65
Allowance for loan and lease losses	(654		)	(610		)	(44		)	7
Net loans and leases	66,510			50,665			15,845			31
Total earning assets	91,435			67,047			24,388			36		3.73	%	3.43	%
Cash and due from banks	1,647			1,007			640			64
Intangible assets	2,380			728			1,652			227
All other assets	5,424			4,187			1,237			30
Total assets	$	100,232		$	72,359		$	27,873		39	%
Liabilities and Shareholders’ Equity:
Deposits:
Demand deposits—noninterest-bearing	$	21,664		$	16,421		$	5,243		32	%	—	%	—	%
Demand deposits—interest-bearing	17,127			8,111			9,016			111		0.18		0.09
Total demand deposits	38,791			24,532			14,259			58		0.08		0.03
Money market deposits	18,934			19,608			(674		)	(3	)	0.29		0.24
Savings and other domestic deposits	11,930			5,354			6,576			123		0.21		0.12
Core certificates of deposit	2,243			2,136			107			5		0.47		0.81
Total core deposits	71,898			51,630			20,268			39		0.24		0.22
Other domestic time deposits of $250,000 or more	474			429			45			10		0.47		0.40
Brokered deposits and negotiable CDs	3,876			2,903			973			34		0.83		0.39
Deposits in foreign offices	—			236			(236		)	—		—		0.13
Total deposits	76,248			55,198			21,050			38		0.28		0.24
Short-term borrowings	3,236			1,089			2,147			197		0.69		0.33
Long-term debt	8,630			7,549			1,081			14		2.41		1.77
Total interest-bearing liabilities	66,450			47,415			19,035			40		0.58		0.48
All other liabilities	1,609			1,465			144			10
Shareholders’ equity	10,509			7,058			3,451			49
Total liabilities and shareholders’ equity	$	100,232		$	72,359		$	27,873		39	%
Net interest rate spread												3.15		2.94
Impact of noninterest-bearing funds on margin												0.16		0.14
Net interest margin												3.31	%	3.08	%

(1) FTE yields are calculated assuming a 35% tax rate.

(2) Loan, lease, and deposit average rates include the impact of applicable derivatives, non-deferrable fees, and amortized deferred fees.

(3) For purposes of this analysis, nonaccrual loans are reflected in the average balances of loans.

N.R.—Not relevant.

14

2017 First Six Months versus 2016 First Six Months

FTE net interest income for the first six-month period of 2017increased$470 million, or 46%. This reflected the benefit of a $24.4 billion, or 36%, increase in average total earning assets coupled with a FTE net interest margin increased to 3.31% from 3.08%. Average securities increased $8.5 billion, or 56%, primarily reflecting the acquisition of FirstMerit and an increase in direct purchase municipal instruments in our commercial banking segment. Average loans and leases increased$15.9 billion, or 31%, primarily reflecting an increase in C&I lending, residential mortgage loans and RV and marine finance resulting from the acquisition of FirstMerit.

Provision for Credit Losses

(This section should be read in conjunction with the Credit Risk section.)

The provision for credit losses is the expense necessary to maintain the ALLL and the AULC at levels appropriate to absorb our estimate of credit losses in the loan and lease portfolio and the portfolio of unfunded loan commitments and letters-of-credit.

The provision for credit losses for the 2017 second quarter was $25 million, which remained relatively unchanged compared to the second quarter 2016. NCOs increased$19 million to $36 million compared with the same period in the prior year. Net charge-offs represented an annualized 0.21% of average loans and leases, which remains below our long-term target of 35 to 55 basis points.

On a year-to-date basis, provision for credit losses for the first six-month period of 2017 was $93 million, an increase of $41 million, or 78%, compared to year-ago period. The increase primarily relates to the FirstMerit acquisition as well as one large commercial recovery in the prior year period.

Noninterest Income

The following table reflects noninterest income for each of the periods presented:

Table 6 - Noninterest Income
(dollar amounts in thousands)
	Three Months Ended							2Q17 vs. 2Q16					2Q17 vs. 1Q17
	June 30,		March 31,			June 30,		Change					Change
	2017		2017			2016		Amount			Percent		Amount			Percent
Service charges on deposit accounts	$	87,582	$	83,420		$	75,613	$	11,969		16	%	$	4,162		5	%
Cards and payment processing income	52,485		47,169			39,184		13,301			34		5,316			11
Mortgage banking income	32,268		31,692			31,591		677			2		576			2
Trust and investment management services	32,232		33,869			22,497		9,735			43		(1,637		)	(5	)
Insurance income	15,843		15,264			15,947		(104		)	(1	)	579			4
Brokerage income	16,294		15,758			14,599		1,695			12		536			3
Capital markets fees	16,836		14,200			13,037		3,799			29		2,636			19
Bank owned life insurance income	15,322		17,542			12,536		2,786			22		(2,220		)	(13	)
Gain on sale of loans	12,002		12,822			9,265		2,737			30		(820		)	(6	)
Securities gains (losses)	135		(8		)	656		(521		)	(79	)	143			(1,788	)
Other Income	44,219		40,735			36,187		8,032			22		3,484			9
Total noninterest income	$	325,218	$	312,463		$	271,112	$	54,106		20	%	$	12,755		4	%

2017 Second Quarter versus 2016 Second Quarter

Noninterest income for the 2017 second quarterincreased$54 million, or 20%, from the year-ago quarter, primarily reflecting the impact of the FirstMerit acquisition. Card and payment processing income increased$13 million, or 34%, due to higher credit and debit card related income and underlying customer growth. Service charges on deposit accounts increased $12 million, or 16%, reflecting the benefit of the FirstMerit acquisition and continued new customer acquisition. Of the increase, $6 million was attributable to consumer deposit accounts, and $6 million was attributable to commercial deposit accounts.

15

2017 Second Quarter versus 2017 First Quarter

Compared to the 2017 first quarter, total noninterest income increased$13 million, or 4%. Card and payment processing income increased$5 million, or 11%, reflecting seasonally higher credit and debit card related income and underlying customer growth.

Table 7 - Noninterest Income—2017 First Six Months vs. 2016 First Six Months
(dollar amounts in thousands)
	Six Months Ended June 30,				Change
	2017		2016		Amount			Percent
Service charges on deposit accounts	$	171,002	$	145,875	$	25,127		17	%
Cards and payment processing income	99,654		75,631		24,023			32
Mortgage banking income	63,960		50,134		13,826			28
Trust and investment management services	66,101		45,335		20,766			46
Insurance income	31,107		32,172		(1,065		)	(3	)
Brokerage income	32,052		30,101		1,951			6
Capital markets fees	31,036		26,047		4,989			19
Bank owned life insurance income	32,864		26,049		6,815			26
Gain on sale of loans	24,824		14,660		10,164			69
Securities gains (losses)	127		656		(529		)	(81	)
Other Income	84,954		66,319		18,635			28
Total noninterest income	$	637,681	$	512,979	$	124,702		24	%

Noninterest income for the first six-month period of 2017increased$125 million, or 24%, from the year-ago period, primarily reflecting the impact of the FirstMerit acquisition. Service charges on deposit accounts increased $25 million, or 17%, reflecting the benefit of the FirstMerit acquisition and continued new customer acquisition. Cards and payment processing income increased $24 million, or 32%, due to higher credit and debit card related income and underlying customer growth. Trust and investment management services increased $21 million, or 46%, primarily reflecting an increase in personal trust services reflecting the benefit of the FirstMerit acquisition.

Noninterest Expense

(This section should be read in conjunction with Significant Items 1.)

The following table reflects noninterest expense for each of the periods presented:

Table 8 - Noninterest Expense
(dollar amounts in thousands)
	Three Months Ended						2Q17 vs. 2Q16					2Q17 vs. 1Q17
	June 30,		March 31,		June 30,		Change					Change
	2017		2017		2016		Amount			Percent		Amount			Percent
Personnel costs	$	391,997	$	382,000	$	298,949	$	93,048		31	%	$	9,997		3	%
Outside data processing and other services	75,169		87,202		63,037		12,132			19		(12,033		)	(14	)
Equipment	42,924		46,700		31,805		11,119			35		(3,776		)	(8	)
Net occupancy	52,613		67,700		30,704		21,909			71		(15,087		)	(22	)
Professional services	18,190		18,295		21,488		(3,298		)	(15	)	(105		)	(1	)
Marketing	18,843		13,923		14,773		4,070			28		4,920			35
Deposit and other insurance expense	20,418		20,099		12,187		8,231			68		319			2
Amortization of intangibles	14,242		14,355		3,600		10,642			296		(113		)	(1	)
Other expense	59,968		57,148		47,118		12,850			27		2,820			5
Total noninterest expense	$	694,364	$	707,422	$	523,661	$	170,703		33	%	$	(13,058	)	(2	)%
Number of employees (average full-time equivalent)	16,103		16,331		12,363		3,740			30	%	(228		)	(1	)%

16

Impacts of Significant Items:

	Three Months Ended
	June 30,		March 31,		June 30,
(dollar amounts in thousands)	2017		2017		2016
Personnel costs	$	17,934	$	19,555	$	4,732
Outside data processing and other services	6,246		14,475		3,045
Equipment	3,994		5,763		3
Net occupancy	14,415		23,342		490
Professional services	3,804		4,218		10,709
Marketing	112		816		241
Other expense	3,738		5,126		1,569
Total noninterest expense adjustments	$	50,243	$	73,295	$	20,789

Adjusted Noninterest Expense (See Non-GAAP Financial Measures in the Additional Disclosures section):

	Three Months Ended						2Q17 vs. 2Q16				2Q17 vs. 1Q17
	June 30,		March 31,		June 30,		Change				Change
(dollar amounts in thousands)	2017		2017		2016		Amount		Percent		Amount			Percent
Personnel costs	$	374,063	$	362,445	$	294,217	$	79,846	27	%	$	11,618		3	%
Outside data processing and other services	68,923		72,727		59,992		8,931		15		(3,804		)	(5	)
Equipment	38,930		40,937		31,802		7,128		22		(2,007		)	(5	)
Net occupancy	38,198		44,358		30,214		7,984		26		(6,160		)	(14	)
Professional services	14,386		14,077		10,779		3,607		33		309			2
Marketing	18,731		13,107		14,532		4,199		29		5,624			43
Deposit and other insurance expense	20,418		20,099		12,187		8,231		68		319			2
Amortization of intangibles	14,242		14,355		3,600		10,642		296		(113		)	(1	)
Other expense	56,230		52,022		45,549		10,681		23		4,208			8
Total adjusted noninterest expense (Non-GAAP)	$	644,121	$	634,127	$	502,872	$	141,249	28	%	$	9,994		2	%

2017 Second Quarter versus 2016 Second Quarter

Reported noninterest expense for the 2017 second quarterincreased$171 million, or 33%, from the year-ago quarter, primarily reflecting the impact of the FirstMerit acquisition, including Significant Items. Personnel costs increased $93 million, or 31%, primarily reflecting a 30% increase in average full-time equivalent employees and a $13 million net increase in acquisition-related personnel expense. Deposit and other insurance expense increased $8 million, or 68%, reflecting the larger assessment base and the FDIC Large Institution Surcharge implemented during the 2016 third quarter.

2017 Second Quarter versus 2017 First Quarter

Reported noninterest expense decreased$13 million, or 2%, from the 2017 first quarter, including a $23 million net decrease in Significant Items. Net occupancy costs decreased$15 million, or 22%, reflecting a $9 million net decrease in acquisition-related expenses and the branch consolidations completed during the 2017 first quarter. Partially offsetting those decreases, personnel costs increased$10 million, or 3%, reflecting the implementation of annual merit increases and grant of annual long-term equity incentive compensation, both in May, partially offset by a $2 million net decrease in acquisition-related expenses.

17

Table 9 - Noninterest Expense—2017 First Six Months vs. 2016 First Six Months
(dollar amounts in thousands)
	Six Months Ended June 30,				Change
	2017		2016		Amount		Percent
Personnel costs	$	773,997	$	584,346	$	189,651	32	%
Outside data processing and other services	162,371		124,915		37,456		30
Equipment	89,624		64,381		25,243		39
Net occupancy	120,313		62,180		58,133		93
Professional services	36,485		35,026		1,459		4
Marketing	32,766		27,041		5,725		21
Deposit and other insurance expense	40,517		23,395		17,122		73
Amortization of intangibles	28,597		7,312		21,285		291
Other expense	117,116		86,145		30,971		36
Total noninterest expense	$	1,401,786	$	1,014,741	$	387,045	38	%

Impacts of Significant Items:

	Six Months Ended June 30,
	2017		2016
Personnel costs	$	37,489	$	5,206
Outside data processing and other services	20,721		3,408
Equipment	9,757		3
Net occupancy	37,757		510
Professional services	8,022		14,997
Marketing	928		254
Other expense	8,864		2,817
Total noninterest expense adjustments	$	123,538	$	27,195

Adjusted Noninterest Expense (See Non-GAAP Financial Measures in Additional Disclosures section):

	Six Months Ended June 30,				Change
	2017		2016		Amount		Percent
Personnel costs	$	736,508	$	579,140	$	157,368	27	%
Outside data processing and other services	141,650		121,507		20,143		17
Equipment	79,867		64,378		15,489		24
Net occupancy	82,556		61,670		20,886		34
Professional services	28,463		20,029		8,434		42
Marketing	31,838		26,787		5,051		19
Deposit and other insurance expense	40,517		23,395		17,122		73
Amortization of intangibles	28,597		7,312		21,285		291
Other expense	108,252		83,328		24,924		30
Total adjusted noninterest expense (Non-GAAP)	$	1,278,248	$	987,546	$	290,702	29	%

Reported noninterest expense increased$387 million, or 38%, from the year-ago period, primarily reflecting the impact of the FirstMerit acquisition, including Significant Items. Personnel costs increased $190 million, or 32%, primarily reflecting a 30% increase in the number of average full-time equivalent employees largely related to the addition of colleagues from FirstMerit and the in-store branch expansion. Net occupancy expense increased $58 million, or 93%, primarily reflecting $38 million of acquisition-related expense. Outside data processing and other services increased $37 million, or 30%, primarily reflecting $21 million of acquisition-related expense.

Provision for Income Taxes

The provision for income taxes in the 2017 second quarter was $79 million. This compared with a provision for income taxes of $54 million in the 2016 second quarter and $59 million in the 2017 first quarter. The provision for income taxes for the six month periods ended June 30, 2017 and June 30, 2016 was $138 million and $109 million, respectively. All periods included the benefits from tax-exempt income, tax-advantaged investments, general business credits, investments in qualified affordable housing projects, excess tax deductions for stock-based compensation, and capital losses. The net federal deferred tax asset was $41 million and the net state deferred tax asset was $37 million at June 30, 2017.

We file income tax returns with the IRS and various state, city, and foreign jurisdictions. Federal income tax audits have been completed for tax years through 2009. The IRS is currently examining our 2010 and 2011 consolidated federal income tax returns. Various state and other jurisdictions remain open to examination, including Ohio, Kentucky, Indiana, Michigan, Pennsylvania, West Virginia, Wisconsin, and Illinois.

RISK MANAGEMENT AND CAPITAL

We use a multi-faceted approach to risk governance. It begins with the board of directors defining our risk appetite as aggregate moderate-to-low. Risk awareness, identification and assessment, reporting, and active management are key elements in overall risk management. Controls include, among others, effective segregation of duties, access, authorization and reconciliation procedures, as well as staff education and a disciplined assessment process.

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We believe that our primary risk exposures are credit, market, liquidity, operational, and compliance oriented. More information on risk can be found in the Risk Factors section included in Item 1A of our 2016 Form 10-K and subsequent filings with the SEC. The MD&A included in our 2016 Form 10-K should be read in conjunction with this MD&A as this discussion provides only material updates to the Form 10-K. This MD&A should also be read in conjunction with the financial statements, notes and other information contained in this report. Our definition, philosophy, and approach to risk management have not materially changed from the discussion presented in the 2016 Form 10-K.

Credit Risk

Credit risk is the risk of financial loss if a counterparty is not able to meet the agreed upon terms of the financial obligation. The majority of our credit risk is associated with lending activities, as the acceptance and management of credit risk is central to profitable lending. We also have credit risk associated with our AFS and HTM securities portfolios (see Note 4 and Note 5 of the Notes to the Unaudited Condensed Consolidated Financial Statements). We engage with other financial counterparties for a variety of purposes including investing, asset and liability management, mortgage banking, and trading activities. While there is credit risk associated with derivative activity, we believe this exposure is minimal.

We continue to focus on the identification, monitoring, and managing of our credit risk. In addition to the traditional credit risk mitigation strategies of credit policies and processes, market risk management activities, and portfolio diversification, we use quantitative measurement capabilities utilizing external data sources, enhanced modeling technology, and internal stress testing processes. Our portfolio management resources demonstrate our commitment to maintaining an aggregate moderate-to-low risk profile. In our efforts to continue to identify risk mitigation techniques, we have focused on product design features, origination policies, and solutions for delinquent or stressed borrowers.

Loan and Lease Credit Exposure Mix

Refer to the “Loan and Lease Credit Exposure Mix” section of our 2016 Form 10-K for a brief description of each portfolio segment.

The table below provides the composition of our total loan and lease portfolio:

Table 10 - Loan and Lease Portfolio Composition
(dollar amounts in millions)
	June 30, 2017				March 31, 2017				December 31, 2016				September 30, 2016				June 30, 2016
Ending Balances by Type:
Commercial:
Commercial and industrial	$	27,969	41	%	$	28,176	42	%	$	28,059	42	%	$	27,668	42	%	$	21,372	41	%
Commercial real estate:
Construction	1,145		2		1,107		2		1,446		2		1,414		2		856		2
Commercial	6,000		9		5,986		9		5,855		9		5,842		9		4,466		7
Commercial real estate	7,145		11		7,093		11		7,301		11		7,256		11		5,322		9
Total commercial	35,114		52		35,269		53		35,360		53		34,924		53		26,694		50
Consumer:
Automobile	11,555		17		11,155		17		10,969		16		10,791		16		10,381		20
Home equity	9,966		15		9,974		15		10,106		15		10,120		15		8,447		17
Residential mortgage	8,237		12		7,829		12		7,725		12		7,665		12		6,377		12
RV and marine finance	2,178		3		1,935		2		1,846		3		1,840		3		—		—
Other consumer	1,009		1		936		1		956		1		964		1		644		1
Total consumer	32,945		48		31,829		47		31,602		47		31,380		47		25,849		50
Total loans and leases	$	68,059	100	%	$	67,098	100	%	$	66,962	100	%	$	66,304	100	%	$	52,543	100	%

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The table below provides our total loan and lease portfolio segregated by industry type. The changes in the industry composition from December 31, 2016 are consistent with the portfolio growth metrics.

Table 11 - Loan and Lease Portfolio by Industry Type
(dollar amounts in millions)
	June 30, 2017				March 31, 2017				December 31, 2016				September 30, 2016				June 30, 2016
Commercial loans:
Real estate and rental and leasing	$	7,588	12	%	$	7,482	12	%	$	7,545	11	%	$	7,513	12	%	$	5,345	10	%
Manufacturing	4,916		7		5,048		8		4,937		7		4,931		7		3,392		6
Retail trade (1)	4,805		7		4,902		7		4,758		7		4,588		7		3,884		7
Finance and insurance	3,051		4		2,844		4		2,010		3		2,289		3		1,682		3
Health care and social assistance	2,699		4		2,727		4		2,729		4		2,638		4		1,776		3
Wholesale trade	2,058		3		2,181		3		2,071		3		2,009		3		1,311		2
Professional, scientific, and technical services	1,660		2		1,240		2		1,264		2		1,228		2		839		2
Transportation and warehousing	1,284		2		1,382		2		1,366		2		1,357		2		1,244		2
Accommodation and food services	1,261		2		1,652		2		1,678		3		1,612		2		1,157		2
Construction	1,232		2		924		1		875		1		889		1		674		1
Other services	928		1		1,278		2		1,223		2		1,205		2		978		2
Utilities	570		1		463		1		470		1		480		1		371		1
Mining, quarrying, and oil and gas extraction	501		1		511		1		668		1		704		1		691		1
Educational services	469		1		544		1		501		1		495		1		495		1
Arts, entertainment, and recreation	458		1		506		1		556		1		437		1		293		1
Information	444		1		454		1		473		1		475		1		325		1
Admin., support, waste management and remediation services	433		1		427		1		429		1		409		1		324		1
Public administration	274		—		266		—		272		—		273		—		282		1
Agriculture, forestry, fishing and hunting	203		—		170		—		151		—		161		—		132		—
Management of companies and enterprises	97		—		100		—		96		—		95		—		84		—
Unclassified, other	183		—		167		—		1,288		2		1,135		2		1,415		3
Total commercial loans by industry category	35,114		52		35,268		53		35,360		53		34,923		53		26,694		50
Automobile loans and leases	11,555		17		11,155		17		10,969		16		10,791		16		10,381		20
Home Equity	9,966		15		9,974		15		10,106		15		10,120		15		8,447		17
Residential mortgage	8,237		12		7,829		12		7,725		12		7,665		12		6,377		12
RV and marine finance	2,178		3		1,935		2		1,846		3		1,840		3		—		—
Other consumer loans	1,009		1		936		1		956		1		965		1		644		1
Total loans and leases	$	68,059	100	%	$	67,097	100	%	$	66,962	100	%	$	66,304	100	%	$	52,543	100	%

(1) Amounts include $3.2 billion, $3.3 billion, $3.2 billion, $3.0 billion and $2.7 billion of auto dealer floorplan loans at June 30, 2017, March 31, 2017, December 31, 2016, September 30, 2016 and June 30, 2016, respectively.

Our loan portfolio is composed of a managed mix of consumer and commercial credits. At the corporate level, we manage the overall credit exposure and portfolio composition in part via a credit concentration policy. The policy designates specific loan types, collateral types, and loan structures to be formally tracked and assigned maximum exposure limits as a percentage of capital. C&I lending by NAICS categories, specific limits for CRE project types, loans secured by residential real estate, shared national credit exposure, and designated high risk loan definitions represent examples of specifically tracked components of our concentration management process. There are no identified concentrations that exceed the assigned exposure limit. Our concentration management policy is approved by the ROC of the Board and is one of the strategies used to ensure a high quality, well diversified portfolio that is consistent with our overall objective of maintaining an aggregate moderate-to-low

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risk profile. Changes to existing concentration limits require the approval of the ROC prior to implementation, incorporating specific information relating to the potential impact on the overall portfolio composition and performance metrics.

Commercial Credit

Refer to the “Commercial Credit” section of our 2016 Form 10-K for our commercial credit underwriting and on-going credit management processes.

Consumer Credit

Refer to the “Consumer Credit” section of our 2016 Form 10-K for our consumer credit underwriting and on-going credit management processes.

Credit Quality

(This section should be read in conjunction with Note 3 of the Notes to Unaudited Condensed Consolidated Financial Statements.)

We believe the most meaningful way to assess overall credit quality performance is through an analysis of credit quality performance ratios. This approach forms the basis of most of the discussion in the sections immediately following: NPAs and NALs, TDRs, ACL, and NCOs. In addition, we utilize delinquency rates, risk distribution and migration patterns, and product segmentation in the analysis of our credit quality performance.

Credit quality performance in the 2017 second quarter reflected continued overall positive results with stable levels of delinquencies and criticized loans and a 9%decline in NPAs. Total NCOs were $36 million, or 0.21%, of average total loans and leases.  Net charge-offs decreased by $3 million from the prior quarter, with the improvement centered in the automobile portfolio. The ACL to total loans and leases ratio declined by 3 basis points to 1.11%.

NPAs, NALs, AND TDRs

(This section should be read in conjunction with Note 3 of the Notes to Unaudited Condensed Consolidated Financial Statements and "Credit Quality" section of our 2016 Form 10-K.)

NPAs and NALs

Of the $212 million of CRE and C&I-related NALs at June 30, 2017, $132 million, or 62%, represented loans that were less than 30-days past due, demonstrating our continued commitment to proactive credit risk management. With the exception of residential mortgage loans guaranteed by government organizations which continue to accrue interest, first-lien loans secured by residential mortgage collateral are placed on nonaccrual status at 150-days past due. Junior-lien home equity loans are placed on nonaccrual status at the earlier of 120-days past due or when the related first-lien loan has been identified as nonaccrual. Automobile, RV and marine and other consumer loans are charged-off at 120-days past due.

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The following table reflects period-end NALs and NPAs detail for each of the last five quarters:

Table 12 - Nonaccrual Loans and Leases and Nonperforming Assets
(dollar amounts in thousands)
	June 30, 2017			March 31, 2017			December 31, 2016			September 30, 2016			June 30, 2016
Nonaccrual loans and leases (NALs):
Commercial and industrial	$	195,279		$	232,171		$	234,184		$	220,862		$	289,811
Commercial real estate	16,763			13,889			20,508			21,300			23,663
Automobile	3,825			4,881			5,766			4,777			5,049
Home equity	67,940			69,575			71,798			69,044			56,845
Residential mortgage	80,306			80,686			90,502			88,155			85,174
RV and marine finance	341			106			245			96			—
Other consumer	2			2			—			—			5
Total nonaccrual loans and leases	364,456			401,310			423,003			404,234			460,547
Other real estate:
Residential	26,890			31,786			30,932			34,421			26,653
Commercial	16,926			18,101			19,998			36,915			2,248
Total other real estate	43,816			49,887			50,930			71,336			28,901
Other NPAs (1)	6,906			6,910			6,968			—			376
Total nonperforming assets	$	415,178		$	458,107		$	480,901		$	475,570		$	489,824
Nonaccrual loans and leases as a % of total loans and leases	0.54		%	0.60		%	0.63		%	0.61		%	0.88		%
NPA ratio (2)	0.61			0.68			0.72			0.72			0.93
(NPA+90days)/(Loan+OREO)	0.81			0.87			0.91			0.92			1.12

(1) Other nonperforming assets includes certain impaired investment securities.

(2) Nonperforming assets divided by the sum of loans and leases, other real estate owned, and other NPAs.

2017 Second Quarter versus 2016 Fourth Quarter.

Total NPAs decreased by $66 million, or 14%, compared with December 31, 2016 primarily as a result of decreases in the C&I and residential portfolios NALs and a 14% decrease in OREO. The C&I decline was a result of significant payoffs and return to accrual of large relationships that were identified as NAL in the fourth quarter of 2016.  The residential mortgage decline was a function of improved delinquencies partially as a result of the efforts by our Home Savers Group actively working with our customers.

TDR Loans

(This section should be read in conjunction with Note 3 of the Notes to Unaudited Condensed Consolidated Financial Statements and "TDR Loans" section of our 2016 Form 10-K.)

Over the past five quarters, the accruing component of the total TDR balance has been between 80% and 84%, as borrowers continue to make their monthly payments in accordance with the modified terms.  From a payment standpoint, over 80% of the $507 million of accruing TDRs secured by residential real estate (Residential mortgage and Home Equity in Table 13) are current on their required payments.  In addition, over 60% of the accruing pool have had no delinquency at all in the past 12 months. There is very limited migration from the accruing to non-accruing components, and virtually all of the charge-offs come from the non-accruing TDR balances.

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The table below presents our accruing and nonaccruing TDRs at period-end for each of the past five quarters:

Table 13 - Accruing and Nonaccruing Troubled Debt Restructured Loans
(dollar amounts in thousands)
	June 30, 2017		March 31, 2017		December 31, 2016		September 30, 2016		June 30, 2016
Troubled debt restructured loans—accruing:
Commercial and industrial	$	270,372	$	222,303	$	210,119	$	232,740	$	232,112
Commercial real estate	74,429		81,202		76,844		80,553		85,015
Automobile	28,140		27,968		26,382		27,843		25,892
Home equity	268,731		271,258		269,709		275,601		203,047
Residential mortgage	238,087		239,175		242,901		251,529		256,859
RV and marine finance	950		581		—		—		—
Other consumer	4,017		4,128		3,780		4,102		4,522
Total troubled debt restructured loans—accruing	884,726		846,615		829,735		872,368		807,447
Troubled debt restructured loans—nonaccruing:
Commercial and industrial	89,757		88,759		107,087		70,179		77,592
Commercial real estate	3,823		4,357		4,507		5,672		6,833
Automobile	4,291		4,763		4,579		4,437		4,907
Home equity	28,667		29,090		28,128		28,009		21,145
Residential mortgage	55,590		59,773		59,157		62,027		63,638
RV and marine finance	381		106		—		—		—
Other consumer	109		117		118		142		142
Total troubled debt restructured loans—nonaccruing	182,618		186,965		203,576		170,466		174,257
Total troubled debt restructured loans	$	1,067,344	$	1,033,580	$	1,033,311	$	1,042,834	$	981,704

Accruing TDRs increased by $55 million compared with December 31, 2016, primarily as a result of the addition of C&I loans that meet the well secured definition.

ACL

(This section should be read in conjunction with Note 3 of the Notes to Unaudited Condensed Consolidated Financial Statements.)

Our total credit reserve is comprised of two different components, both of which in our judgment are appropriate to absorb credit losses inherent in our loan and lease portfolio: the ALLL and the AULC. Combined, these reserves comprise the total ACL. Our ACL Methodology Committee is responsible for developing the methodology, assumptions and estimates used in the calculation, as well as determining the appropriateness of the ACL. The ALLL represents the estimate of losses inherent in the loan portfolio at the reported date. Additions to the ALLL result from recording provision expense for the recognition of loan losses due to increased risk levels resulting from loan risk-rating downgrades. Reductions reflect charge-offs (net of recoveries), decreased risk levels resulting from loan risk-rating upgrades, or the sale of loans. The AULC is determined by applying the same quantitative reserve determination process to the unfunded portion of the loan exposures adjusted by an applicable funding expectation.

Loans originated for investment are stated at their principal amount outstanding adjusted for partial charge-offs, and net deferred loan fees and costs. Acquired loans are those purchased in the FirstMerit acquisition. These loans were recorded at estimated fair value at the acquisition date with no carryover of the related ALLL. The difference between acquired contractual balance and estimated fair value at acquisition date was recorded as a purchase premium or discount.

Our ACL evaluation process includes the on-going assessment of credit quality metrics, and a comparison of certain ACL benchmarks to current performance.

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The table below reflects the allocation of our ACL among our various loan categories during each of the past five quarters:

Table 14 - Allocation of Allowance for Credit Losses (1)
(dollar amounts in thousands)
	June 30, 2017				March 31, 2017				December 31, 2016				September 30, 2016				June 30, 2016
Allowance for Credit Losses
Commercial
Commercial and industrial	$	367,956	41	%	$	380,504	42	%	$	355,424	42	%	$	333,101	42	%	$	323,465	41	%
Commercial real estate	106,620		11		99,804		11		95,667		11		98,694		11		101,042		9
Total commercial	474,576		52		480,308		53		451,091		53		431,795		53		424,507		50
Consumer
Automobile	48,322		17		46,402		17		47,970		16		42,584		16		50,531		20
Home equity	62,941		15		64,900		15		65,474		15		69,866		15		76,482		17
Residential mortgage	33,304		12		35,559		12		33,398		12		36,510		12		42,392		12
RV and marine finance	7,665		3		4,022		2		5,311		3		4,289		3		—		—
Other consumer	41,188		1		41,389		1		35,169		1		31,854		1		29,152		1
Total consumer	193,420		48		192,272		47		187,322		47		185,103		47		198,557		50
Total allowance for loan and lease losses	667,996		100	%	672,580		100	%	638,413		100	%	616,898		100	%	623,064		100	%
Allowance for unfunded loan commitments	85,359				91,838				97,879				88,433				73,748
Total allowance for credit losses	$	753,355			$	764,418			$	736,292			$	705,331			$	696,812
Total allowance for loan and leases losses as % of:
Total loans and leases			0.98	%			1.00	%			0.95	%			0.93	%			1.19	%
Nonaccrual loans and leases			183				168				151				153				135
Nonperforming assets			161				147				133				130				127
Total allowance for credit losses as % of:
Total loans and leases			1.11	%			1.14	%			1.10	%			1.06	%			1.33	%
Nonaccrual loans and leases			207				190				174				174				151
Nonperforming assets			181				167				153				148				142

(1) Percentages represent the percentage of each loan and lease category to total loans and leases.

2017 Second Quarter versus 2016 Fourth Quarter

At June 30, 2017, the ALLL was $668 million, compared to $638 million at December 31, 2016. The $30 million, or 5%, increase in the ALLL relates to an increase in Criticized/Classified assets in the C&I portfolio and growth in the Other consumer loan category.

The ACL to total loans ratio was 1.11% at June 30, 2017, compared with 1.10% at December 31, 2016. Management believes the ratio is appropriate given the overall moderate-to-low risk profile of our loan portfolio. We continue to focus on early identification of loans with changes in credit metrics and proactive action plans for these loans. We believe that our ACL is appropriate and its coverage level is reflective of the quality of our portfolio and the current operating environment.

NCOs

Any loan in any portfolio may be charged-off if a loss confirming event has occurred or in accordance with the policies described below, whichever is earlier. Loss confirming events include, but are not limited to, bankruptcy (unsecured), continued delinquency, foreclosure, or receipt of an asset valuation indicating a collateral deficiency where that asset is the sole source of repayment. Additionally, discharged, collateral dependent non-reaffirmed debt in Chapter 7 bankruptcy filings will result in a charge-off to estimated collateral value, less anticipated selling costs.

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C&I and CRE loans are either charged-off or written down to net realizable value at 90-days past due with the exception of Huntington Technology Finance administrative lease delinquencies. Automobile loans, RV and marine finance and other consumer loans are generally charged-off at 120-days past due. First-lien and junior-lien home equity loans are charged-off to the estimated fair value of the collateral, less anticipated selling costs, at 150-days past due and 120-days past due, respectively. Residential mortgages are charged-off to the estimated fair value of the collateral, less anticipated selling costs, at 150-days past due.

Table 15 - Quarterly Net Charge-off Analysis
(dollar amounts in thousands)
	Three Months Ended
	June 30,			March 31,			June 30,
	2017			2017			2016
Net charge-offs (recoveries) by loan and lease type:
Commercial:
Commercial and industrial	$	12,870		$	8,096		$	3,702
Commercial real estate:
Construction	83			(3,137		)	(377		)
Commercial	(3,638		)	895			(296		)
Commercial real estate	(3,555		)	(2,242		)	(673		)
Total commercial	9,315			5,854			3,029
Consumer:
Automobile	8,318			12,407			4,320
Home equity	1,218			1,662			1,078
Residential mortgage	1,052			2,595			776
RV and marine finance	1,875			2,363			—
Other consumer	14,262			14,557			7,552
Total consumer	26,725			33,584			13,726
Total net charge-offs	$	36,040		$	39,438		$	16,755
	Three Months Ended
	June 30,			March 31,			June 30,
	2017			2017			2016
Net charge-offs (recoveries)—annualized percentages:
Commercial:
Commercial and industrial	0.18		%	0.12		%	0.07		%
Commercial real estate:
Construction	0.03			(0.96		)	(0.17		)
Commercial	(0.24		)	0.06			(0.03		)
Commercial real estate	(0.20		)	(0.12		)	(0.05		)
Total commercial	0.11			0.07			0.05
Consumer:
Automobile	0.29			0.45			0.17
Home equity	0.05			0.07			0.05
Residential mortgage	0.05			0.13			0.05
RV and marine finance	0.37			0.50			—
Other consumer	5.81			6.33			4.93
Total consumer	0.33			0.42			0.22
Net charge-offs as a % of average loans	0.21		%	0.24		%	0.13		%

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In assessing NCO trends, it is helpful to understand the process of how commercial loans are treated as they deteriorate over time. The ALLL established is consistent with the level of risk associated with the original underwriting. As a part of our normal portfolio management process for commercial loans, the loan is periodically reviewed and the ALLL is increased or decreased based on the updated risk rating. In certain cases, the standard ALLL is determined to not be appropriate, and a specific reserve is established based on the projected cash flow or collateral value of the specific loan. Charge-offs, if necessary, are generally recognized in a period after the specific ALLL was established. If the previously established ALLL exceeds the estimated loss on the loan, a reduction in the overall level of the ALLL could be recognized. Consumer loans are treated in much the same manner as commercial loans, with increasing reserve factors applied based on the risk characteristics of the loan, although specific reserves are not identified for consumer loans. In summary, if loan quality deteriorates, the typical credit sequence would be periods of reserve building, followed by periods of higher NCOs as the previously established ALLL is utilized. Additionally, an increase in the ALLL either precedes or is in conjunction with increases in NALs. When a loan is classified as NAL, it is evaluated for specific ALLL or charge-off. As a result, an increase in NALs does not necessarily result in an increase in the ALLL or an expectation of higher future NCOs.

2017 Second Quarter versus 2017 First Quarter

NCOs were an annualized 0.21% of average loans and leases in the current quarter, a decrease from 0.24% in the 2017 first quarter, still below our long-term expectation of 0.35% - 0.55%. Commercial charge-offs were slightly higher for the quarter, but well within our expected performance range. Consumer charge-offs were lower for the quarter, driven by an improvement in the Automobile portfolio resulting from seasonality trends which were consistent with our expectations. Given the low level of C&I and CRE NCO’s, we expect some volatility on a quarter-to-quarter comparison basis.

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The table below reflects NCO detail for the six-month periods ended June 30, 2017 and 2016:

Table 16 - Year to Date Net Charge-off Analysis
(dollar amounts in thousands)
	Six Months Ended June 30,
	2017			2016
Net charge-offs by loan and lease type:
Commercial:
Commercial and industrial	$	20,966		$	10,216
Commercial real estate:
Construction	(3,054		)	(481		)
Commercial	(2,743		)	(17,668		)
Commercial real estate	(5,797		)	(18,149		)
Total commercial	15,169			(7,933		)
Consumer:
Automobile	20,725			11,090
Home equity	2,880			4,759
Residential mortgage	3,647			2,423
RV and marine finance	4,238			—
Other consumer	28,819			14,968
Total consumer	60,309			33,240
Total net charge-offs	$	75,478		$	25,307
	Six Months Ended June 30,
	2017			2016
Net charge-offs - annualized percentages:
Commercial:
Commercial and industrial	0.15		%	0.10		%
Commercial real estate:
Construction	(0.50		)	(0.11		)
Commercial	(0.09		)	(0.82		)
Commercial real estate	(0.16		)	(0.70		)
Total commercial	0.09			(0.06		)
Consumer:
Automobile	0.37			0.22
Home equity	0.06			0.11
Residential mortgage	0.09			0.08
RV and marine finance	0.43			—
Other consumer	5.93			5.04
Total consumer	0.38			0.27
Net charge-offs as a % of average loans	0.22		%	0.10		%

2017 First Six Months versus 2016 First Six Months

NCOs were $75.5 million, a $50 million increase from the same period in the prior year. The increase primarily relates to the FirstMerit acquisition as well as one large commercial recovery in the prior year period. Given the low level of C&I and CRE NCO’s, there will continue to be some volatility on a period-to-period comparison basis.

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Market Risk

(This section should be read in conjunction with the “Market Risk” section of our 2016 Form 10-K for our on-going market risk management processes.)

Market risk refers to potential losses arising from changes in interest rates, foreign exchange rates, equity prices and commodity prices, including the correlation among these factors and their volatility. When the value of an instrument is tied to such external factors, the holder faces market risk. We are primarily exposed to interest rate risk as a result of offering a wide array of financial products to our customers and secondarily to price risk from trading securities, securities owned by our broker-dealer subsidiary, foreign exchange positions, equity investments, and investments in securities backed by mortgage loans.

Interest Rate Risk

Table 17 - Net Interest Income at Risk
	Net Interest Income at Risk (%)
Basis point change scenario	-25		+100		+200
Board policy limits	N/A		-2.0	%	-4.0	%
June 30, 2017	-0.6	%	2.8	%	5.5	%
December 31, 2016	-1.0	%	2.7	%	5.6	%

The NII at Risk results included in the table above reflect the analysis used monthly by management. It models gradual -25, +100 and +200 basis point parallel shifts in market interest rates, implied by the forward yield curve over the next twelve months. Due to the current low level of short-term interest rates, the analysis reflects a declining interest rate scenario of 25 basis points, the point at which many assets and liabilities reach zero percent.

Our NII at Risk is within our board of director's policy limits for the +100 and +200 basis point scenarios. There is no policy limit for the -25 basis point scenario. The NII at Risk shows that the balance sheet is asset sensitive at both June 30, 2017, and December 31, 2016.

Table 18 - Economic Value of Equity at Risk
	Economic Value of Equity at Risk (%)
Basis point change scenario	-25		+100		+200
Board policy limits	N/A		-5.0	%	-12.0	%
June 30, 2017	-1.2	%	3.2	%	4.7	%
December 31, 2016	-0.6	%	0.9	%	0.2	%

The EVE results included in the table above reflect the analysis used monthly by management. It models immediate -25, +100 and +200 basis point parallel shifts in market interest rates. Due to the current low level of short-term interest rates, the analysis reflects a declining interest rate scenario of 25 basis points, the point at which deposit costs reach zero percent.

We are within our board of director's policy limits for the +100 and +200 basis point scenarios. There is no policy limit for the -25 basis point scenario. The EVE depicts a moderate level of long-term interest rate risk, which indicates the balance sheet is positioned favorably for rising interest rates. The EVE increase at June 30, 2017 from December 31, 2016 is primarily the result of a change in the average life assumptions for certain loans, deposits and securities.

MSRs

(This section should be read in conjunction with Note 6 of Notes to Unaudited Condensed Consolidated Financial Statements.)

At June 30, 2017, we had a total of $189 million of capitalized MSRs representing the right to service $19.1 billion in mortgage loans. Of this $189 million, $13 million was recorded using the fair value method and $176 million was recorded using the amortization method.

MSR fair values are sensitive to movements in interest rates as expected future net servicing income depends on the projected outstanding principal balances of the underlying loans, which can be reduced by prepayments. Prepayments usually increase when mortgage interest rates decline and decrease when mortgage interest rates rise. We have employed hedging strategies to reduce the risk of MSR fair value changes or impairment. However, volatile changes in interest rates can diminish

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the effectiveness of these economic hedges. We report MSR fair value adjustments net of hedge-related trading activity in the mortgage banking income category of noninterest income. Changes in fair value between reporting dates are recorded as an increase or a decrease in mortgage banking income.

MSRs recorded using the amortization method generally relate to loans originated with historically low interest rates, resulting in a lower probability of prepayments and, ultimately, impairment. MSR assets are included in servicing rights in the Unaudited Condensed Consolidated Financial Statements.

Price Risk

Price risk represents the risk of loss arising from adverse movements in the prices of financial instruments that are carried at fair value and are subject to fair value accounting. We have price risk from trading securities, securities owned by our broker-dealer subsidiary, foreign exchange positions, equity investments, and investments in securities backed by mortgage loans. We have established loss limits on the trading portfolio, on the amount of foreign exchange exposure that can be maintained, and on the amount of marketable equity securities that can be held.

Liquidity Risk

(This section should be read in conjunction with the “Liquidity Risk” section of our 2016 Form 10-K for our on-going liquidity risk management processes.)

Our primary source of liquidity is our core deposit base. Core deposits comprised approximately 95% of total deposits at June 30, 2017. We also have available unused wholesale sources of liquidity, including advances from the FHLB of Cincinnati, issuance through dealers in the capital markets, and access to certificates of deposit issued through brokers. Liquidity is further provided by unencumbered, or unpledged, investment securities that totaled $14.7 billion as of June 30, 2017.

Bank Liquidity and Sources of Funding

Our primary sources of funding for the Bank are retail and commercial core deposits. At June 30, 2017, these core deposits funded 71% of total assets (105% of total loans). Other sources of liquidity include non-core deposits, FHLB advances, wholesale debt instruments, and securitizations. Demand deposit overdrafts that have been reclassified as loan balances were $22 million and $23 million at June 30, 2017 and December 31, 2016, respectively.

The following table reflects deposit composition detail for each of the last five quarters:

Table 19 - Deposit Composition
(dollar amounts in millions)
	June 30,				March 31,				December 31,				September 30,				June 30,
	2017				2017				2016				2016				2016
By Type:
Demand deposits—noninterest-bearing	$	21,420	28	%	$	21,489	28	%	$	22,836	30	%	$	23,426	30	%	$	16,324	30	%
Demand deposits—interest-bearing	17,113		23		18,618		24		15,676		21		15,730		20		8,412		15
Money market deposits	19,423		26		18,664		24		18,407		24		18,604		24		19,480		34
Savings and other domestic deposits	11,758		15		12,043		16		11,975		16		12,418		16		5,341		10
Core certificates of deposit	2,088		3		2,188		3		2,535		3		2,724		4		1,866		4
Total core deposits:	71,802		95		73,002		95		71,429		94		72,902		94		51,423		93
Other domestic deposits of $250,000 or more	441		1		524		1		394		1		391		1		380		1
Brokered deposits and negotiable CDs	3,690		4		3,897		4		3,785		5		3,972		5		3,017		6
Deposits in foreign offices	—		—		—		—		—		—		140		—		223		—
Total deposits	$	75,933	100	%	$	77,423	100	%	$	75,608	100	%	$	77,405	100	%	$	55,043	100	%
Total core deposits:
Commercial	$	32,201	45	%	$	32,963	45	%	$	31,887	45	%	$	32,936	45	%	$	24,308	47	%
Consumer	39,601		55		40,039		55		39,542		55		39,966		55		27,115		53
Total core deposits	$	71,802	100	%	$	73,002	100	%	$	71,429	100	%	$	72,902	100	%	$	51,423	100	%

The Bank maintains borrowing capacity at the FHLB and the Federal Reserve Bank Discount Window. The Bank does not consider borrowing capacity from the Federal Reserve Bank Discount Window as a primary source of liquidity. Total loans and securities pledged to the Federal Reserve Discount Window and the FHLB are $30.4 billion and $19.7 billion at June 30, 2017 and December 31, 2016, respectively.

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At June 30, 2017, total wholesale funding was $17.2 billion, an increase from $16.2 billion at December 31, 2016. The increase from year-end primarily relates to an increase in short-term borrowings.

Liquidity Coverage Ratio

On September 3, 2014, the U.S. banking regulators adopted a final LCR for internationally active banking organizations, generally those with $250 billion or more in total assets, and a Modified LCR rule for banking organizations, similar to Huntington, with $50 billion or more in total assets that are not internationally active banking organizations. The LCR is designed to promote the short-term resilience of the liquidity risk profile of banks to which it applies. The Modified LCR requires Huntington to maintain HQLA to meet its net cash outflows over a prospective 30 calendar-day period, which takes into account the potential impact of idiosyncratic and market-wide shocks. The Modified LCR transition period began on January 1, 2016, with Huntington required to maintain HQLA equal to 90 percent of the stated requirement. The ratio increased to 100 percent on January 1, 2017. At June 30, 2017, Huntington was in compliance with the Modified LCR requirement.

Parent Company Liquidity

The parent company’s funding requirements consist primarily of dividends to shareholders, debt service, income taxes, operating expenses, funding of nonbank subsidiaries, repurchases of our stock, and acquisitions. The parent company obtains funding to meet obligations from dividends and interest received from the Bank, interest and dividends received from direct subsidiaries, net taxes collected from subsidiaries included in the federal consolidated tax return, fees for services provided to subsidiaries, and the issuance of debt securities.

At June 30, 2017, the parent company had $1.8 billion in cash and cash equivalents, up slightly from December 31, 2016.

On July 19, 2017, the board of directors declared a quarterly common stock cash dividend of $0.08 per common share. The dividend is payable on October 2, 2017, to shareholders of record on September 18, 2017. Based on the current quarterly dividend of $0.08 per common share, cash demands required for common stock dividends are estimated to be approximately $87 million per quarter. On July 19, 2017, the board of directors declared a quarterly Series A, Series B, Series C, and Series D Preferred Stock dividend payable on October 16, 2017 to shareholders of record on October 1, 2017. Based on the current dividend, cash demands required for Series A, Series B, Series C, and Series D Preferred Stock are estimated to be approximately $8 million, $0.3 million, $1.5 million, and $9 million per quarter, respectively.

During the first six months of 2017, the Bank returned capital totaling $331 million to the holding company. Additionally, the Bank paid a preferred dividend to the holding company of $22 million during the first six months of 2017. To meet any additional liquidity needs, the parent company may issue debt or equity securities from time to time.

Off-Balance Sheet Arrangements

In the normal course of business, we enter into various off-balance sheet arrangements. These arrangements include commitments to extend credit (See Note 14), interest rate swaps (See Note 12), financial guarantees contained in standby letters-of-credit issued by the Bank (See Note 14), and commitments by the Bank to sell mortgage loans (See Note 14).

Operational Risk

Operational risk is the risk of loss due to human error; inadequate or failed internal systems and controls, including the use of financial or other quantitative methodologies that may not adequately predict future results; violations of, or noncompliance with, laws, rules, regulations, prescribed practices, or ethical standards; and external influences such as market conditions, fraudulent activities, disasters, and security risks. We continuously strive to strengthen our system of internal controls to ensure compliance with laws, rules, and regulations, and to improve the oversight of our operational risk. We actively and continuously monitor cyber-attacks such as attempts related to online deception and loss of sensitive customer data. We evaluate internal systems, processes and controls to mitigate loss from cyber-attacks and, to date, have not experienced any material losses.

Our objective for managing cyber security risk is to avoid or minimize the impacts of external threat events or other efforts to penetrate our systems. We work to achieve this objective by hardening networks and systems against attack, and by diligently managing visibility and monitoring controls within our data and communications environment to recognize events and respond before the attacker has the opportunity to plan and execute on its own goals. To this end we employ a set of defense in-depth strategies, which include efforts to make us less attractive as a target and less vulnerable to threats, while investing in threat analytic capabilities for rapid detection and response. Potential concerns related to cyber security may be escalated to our board-level Technology Committee, as appropriate. As a complement to the overall cyber security risk management, we use a number of internal training methods, both formally through mandatory courses and informally through written communications and other updates. Internal policies and procedures have been implemented to encourage the reporting of potential phishing attacks or other security risks. We also use third-party services to test the effectiveness of our cyber

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security risk management framework, and any such third parties are required to comply with our policies regarding information security and confidentiality.

To mitigate operational risks, we have a senior management Operational Risk Committee and a senior management Legal, Regulatory, and Compliance Committee. The responsibilities of these committees, among other duties, include establishing and maintaining management information systems to monitor material risks and to identify potential concerns, risks, or trends that may have a significant impact and ensuring that recommendations are developed to address the identified issues. In addition, we have a senior management Model Risk Oversight Committee that is responsible for policies and procedures describing how model risk is evaluated and managed and the application of the governance process to implement these practices throughout the enterprise. These committees report any significant findings and recommendations to the Risk Management Committee. Potential concerns may be escalated to our ROC, as appropriate.

The FirstMerit integration was inherently large and complex. Our objective for managing execution risk was to minimize impacts to daily operations. We established an Integration Management Office led by senior management. Responsibilities included central management, reporting, and escalation of key integration deliverables. In addition, a board level Integration Governance Committee was established to assist in the oversight of the integration of people, systems, and processes of FirstMerit with Huntington. While the systems' conversion is now largely completed, continued oversight will occur until all converted systems are fully decommissioned.

The goal of this framework is to implement effective operational risk techniques and strategies, minimize operational fraud, and legal losses; minimize the impact of inadequately designed models and enhance our overall performance.

Compliance Risk

Financial institutions are subject to many laws, rules, and regulations at both the federal and state levels. These broad-based laws, rules, and regulations include, but are not limited to, expectations relating to anti-money laundering, lending limits, client privacy, fair lending, prohibitions against unfair, deceptive or abusive acts or practices, protections for military members as they enter active duty, and community reinvestment. Additionally, the volume and complexity of recent regulatory changes have increased our overall compliance risk. As such, we utilize various resources to help ensure expectations are met, including a team of compliance experts dedicated to ensuring our conformance with all applicable laws, rules, and regulations. Our colleagues receive training for several broad-based laws and regulations including, but not limited to, anti-money laundering and customer privacy. Additionally, colleagues engaged in lending activities receive training for laws and regulations related to flood disaster protection, equal credit opportunity, fair lending, and/or other courses related to the extension of credit. We set a high standard of expectation for adherence to compliance management and seek to continuously enhance our performance.

Capital

Both regulatory capital and shareholders’ equity are managed at the Bank and on a consolidated basis. We have an active program for managing capital and maintain a comprehensive process for assessing the Company’s overall capital adequacy. We believe our current levels of both regulatory capital and shareholders’ equity are adequate.

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The following table presents certain regulatory capital data at both the consolidated and Bank levels for each of the past five quarters:

Table 20 - Regulatory Capital Data
(dollar amounts in millions)
		Basel III
		June 30, 2017			March 31, 2017			December 31, 2016
Total risk-weighted assets	Consolidated	$	78,366		$	77,559		$	78,263
	Bank	78,489			77,534			78,242
Common equity tier I risk-based capital	Consolidated	7,740			7,551			7,486
	Bank	8,367			8,146			8,153
Tier 1 risk-based capital	Consolidated	8,809			8,619			8,547
	Bank	9,238			9,015			9,086
Tier 2 risk-based capital	Consolidated	1,640			1,663			1,668
	Bank	1,706			1,745			1,732
Total risk-based capital	Consolidated	10,449			10,282			10,215
	Bank	10,944			10,760			10,818
Tier 1 leverage ratio	Consolidated	8.98		%	8.76		%	8.70		%
	Bank	9.43			9.18			9.29
Common equity tier I risk-based capital ratio	Consolidated	9.88			9.74			9.56
	Bank	10.66			10.51			10.42
Tier 1 risk-based capital ratio	Consolidated	11.24			11.11			10.92
	Bank	11.77			11.63			11.61
Total risk-based capital ratio	Consolidated	13.33			13.26			13.05
	Bank	13.94			13.88			13.83

At June 30, 2017, we maintained Basel III transitional capital ratios in excess of the well-capitalized standards established by the FRB.

Shareholders’ Equity

We generate shareholders’ equity primarily through the retention of earnings, net of dividends and share repurchases. Other potential sources of shareholders’ equity include issuances of common and preferred stock. Our objective is to maintain capital at an amount commensurate with our risk profile and risk tolerance objectives, to meet both regulatory and market expectations, and to provide the flexibility needed for future growth and business opportunities.

Shareholders’ equity totaled $10.7 billion at June 30, 2017, an increase of $0.3 billion when compared with December 31, 2016.

On June 28, 2017, Huntington was notified by the Federal Reserve that it had no objection to Huntington's proposed capital actions included in Huntington's capital plan submitted in the 2017 Comprehensive Capital Analysis and Review (“CCAR”). These actions included a 38% increase in the quarterly dividend per common share to $0.11, starting in the fourth quarter of 2017, the repurchase of up to $308 million of common stock over the next four quarters (July 1, 2017 through June 30, 2018), subject to authorization by the Board of Directors, and maintaining dividends on the outstanding classes of preferred stock and trust preferred securities.

On July 19, 2017, the Board authorized the repurchase of up to $308 million of common shares over the four quarters through the 2018 second quarter. Purchases of common stock under the authorization may include open market purchases, privately negotiated transactions, and accelerated repurchase programs.

Dividends

We consider disciplined capital management as a key objective, with dividends representing one component. Our strong capital ratios and expectations for continued earnings growth positions us to continue to actively explore additional capital management opportunities.

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Fair Value

At the end of each quarter, we assess the valuation hierarchy for each asset or liability measured. As necessary, assets or liabilities may be transferred within hierarchy levels due to changes in availability of observable market inputs at the measurement date. The fair values measured at each level of the fair value hierarchy, additional discussion regarding fair value measurements, and a brief description of how fair value is determined for categories that have unobservable inputs, can be found in Note 11 of the Notes to Unaudited Condensed Consolidated Financial Statements.

BUSINESS SEGMENT DISCUSSION

Overview

Our business segments are based on our internally-aligned segment leadership structure, which is how we monitor results and assess performance. We have four major business segments: Consumer and Business Banking, Commercial Banking, Commercial Real Estate and Vehicle Finance(CREVF), and Regional Banking and The Huntington Private Client Group(RBHPCG). A Treasury / Other function includes technology and operations, other unallocated assets, liabilities, revenue, and expense.

Business segment results are determined based upon our management accounting practices, which assigns balance sheet and income statement items to each of the business segments. The process is designed around our organizational and management structure and, accordingly, the results derived are not necessarily comparable with similar information published by other financial institutions.

We announced a change within our executive leadership team, which became effective during the 2017 second quarter. As a result, the previously reported Home Lending segment is now included as an operating unit within the Consumer and Business Banking segment. Additionally, the Insurance operating unit previously included in Commercial Banking was realigned to RBHPCG during the quarter. Prior period results have been reclassified to conform to the current period presentation.

Revenue Sharing

Revenue is recorded in the business segment responsible for the related product or service. Fee sharing is recorded to allocate portions of such revenue to other business segments involved in selling to, or providing service to customers. Results of operations for the business segments reflect these fee sharing allocations.

Expense Allocation

The management accounting process that develops the business segment reporting utilizes various estimates and allocation methodologies to measure the performance of the business segments. Expenses are allocated to business segments using a two-phase approach. The first phase consists of measuring and assigning unit costs (activity-based costs) to activities related to product origination and servicing. These activity-based costs are then extended, based on volumes, with the resulting amount allocated to business segments that own the related products. The second phase consists of the allocation of overhead costs to all four business segments from Treasury / Other. We utilize a full-allocation methodology, where all Treasury / Other expenses, except reported Significant Items, and a small amount of other residual unallocated expenses, are allocated to the four business segments.

Funds Transfer Pricing (FTP)

We use an active and centralized FTP methodology to attribute appropriate income to the business segments. The intent of the FTP methodology is to transfer interest rate risk from the business segments by providing matched duration funding of assets and liabilities. The result is to centralize the financial impact, management, and reporting of interest rate risk in the Treasury / Other function where it can be centrally monitored and managed. The Treasury / Other function charges (credits) an internal cost of funds for assets held in (or pays for funding provided by) each business segment. The FTP rate is based on prevailing market interest rates for comparable duration assets (or liabilities).

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Net Income by Business Segment

The segregation of net income by business segment for the six-month periods ending June 30, 2017 and June 30, 2016 is presented in the following table:

Table 21 - Net Income (Loss) by Business Segment
(dollar amounts in thousands)
	Six Months Ended June 30,
	2017			2016
Consumer and Business Banking	$	201,290		$	129,151
Commercial Banking	160,991			77,513
CREVF	106,919			87,848
RBHPCG	42,678			27,240
Treasury / Other	(32,043		)	24,102
Net income	$	479,835		$	345,854

Treasury / Other

The Treasury / Other function includes revenue and expense related to assets, liabilities, and equity not directly assigned or allocated to one of the four business segments. Other assets include investment securities and bank owned life insurance. The financial impact associated with our FTP methodology, as described above, is also included.

Net interest income includes the impact of administering our investment securities portfolios and the net impact of derivatives used to hedge interest rate sensitivity. Noninterest income includes miscellaneous fee income not allocated to other business segments, such as bank owned life insurance income and any investment security and trading asset gains or losses. Noninterest expense includes $124 million of FirstMerit acquisition-related expense in 2017 first six-month period, certain corporate administrative, and other miscellaneous expenses not allocated to other business segments. The provision for income taxes for the business segments is calculated at a statutory 35% tax rate, though our overall effective tax rate is lower. As a result, Treasury / Other reflects a credit for income taxes representing the difference between the lower actual effective tax rate and the statutory tax rate used to allocate income taxes to the business segments.

Consumer and Business Banking
Table 22 - Key Performance Indicators for Consumer and Business Banking
(dollar amounts in thousands unless otherwise noted)
	Six Months Ended June 30,						Change
	2017			2016			Amount			Percent
Net interest income	$	828,936		$	562,423		$	266,513		47	%
Provision for credit losses	50,181			30,750			19,431			63
Noninterest income	354,970			284,002			70,968			25
Noninterest expense	824,048			616,981			207,067			34
Provision for income taxes	108,387			69,543			38,844			56
Net income	$	201,290		$	129,151		$	72,139		56	%
Number of employees (average full-time equivalent)	8,737			6,543			2,194			34	%
Total average assets (in millions)	$	25,283		$	18,951		$	6,332		33
Total average loans/leases (in millions)	20,479			16,227			4,252			26
Total average deposits (in millions)	45,461			31,428			14,033			45
Net interest margin	3.78		%	3.68		%	0.10		%	3
NCOs	$	48,576		$	28,948		$	19,628		68
NCOs as a % of average loans and leases	0.47		%	0.35		%	0.12		%	34

2017 First Six Months vs. 2016 First Six Months

Consumer and Business Banking, including Home Lending, reported net income of $201 million in the first six-month period of 2017, an increase of $72 million, or 56%, compared to the year-ago period. Results were predominately impacted by the FirstMerit acquisition. Segment net interest income increased $267 million, or 47%, primarily due to an increase in total average loans and deposits. The provision for credit losses increased $19 million, or 63%, driven by an increase in the

34

allowance as well as increased NCOs. Noninterest income increased $71 million, or 25%, due to an increase in net mortgage servicing revenue, card and payment processing income and service charges on deposit accounts, which were driven by higher debit card-related transaction volumes and an increase in the number of households. In addition, SBA loan sales gains contributed to improved noninterest income. Noninterest expense increased $207 million, or 34%, due to an increase in personnel and occupancy expense related to the addition of FirstMerit branches and colleagues. Higher allocated expenses also contributed to the increase in noninterest expense.

Home Lending, an operating unit of Consumer and Business Banking, reflects the result of the origination and servicing of mortgage loans less referral fees and net interest income for mortgage banking products distributed by the retail branch network and other business segments. Home Lending reported net income of $4 million in the first six-month period of 2017, a decrease of $5 million, or 55%, compared to the year-ago period. Results were impacted by the FirstMerit acquisition. Net interest income increased $4 million, or 16%, which primarily reflects higher residential mortgage balances and lower FTP funding costs. The provision for credit losses increased $4 million, primarily due to an increase in the allowance in for the residential mortgage portfolio held by Home Lending. Noninterest income increased by $10 million, or 31%, primarily due to favorable net MSR hedge-related activities and net servicing income. Income from higher origination volumes was predominately offset by lower spreads on origination volume. Noninterest expense increased $18 million, or 36%, primarily due to higher personnel costs related to the FirstMerit acquisition and higher origination volume.

Commercial Banking
Table 23 - Key Performance Indicators for Commercial Banking
(dollar amounts in thousands unless otherwise noted)
	Six Months Ended June 30,						Change
	2017			2016			Amount			Percent
Net interest income	$	343,285		$	212,240		$	131,045		62	%
Provision for credit losses	11,798			29,423			(17,625		)	(60	)
Noninterest income	117,573			95,484			22,089			23
Noninterest expense	201,382			159,050			42,332			27
Provision for income taxes	86,687			41,738			44,949			108
Net income	$	160,991		$	77,513		$	83,478		108	%
Number of employees (average full-time equivalent)	1,087			833			254			30	%
Total average assets (in millions)	$	24,000		$	17,553		$	6,447		37
Total average loans/leases (in millions)	19,075			13,804			5,271			38
Total average deposits (in millions)	18,725			14,072			4,653			33
Net interest margin	3.35		%	2.88		%	0.47		%	16
NCOs	$	6,416		$	16,261		$	(9,845	)	(61	)
NCOs as a % of average loans and leases	0.07		%	0.23		%	(0.16		)%	(70	)

2017 First Six Months vs. 2016 First Six Months

Commercial Banking reported net income of $161 million in the first six-month period of 2017, an increase of $83 million, or 108%, compared to the year-ago period. Results were predominately impacted by the FirstMerit acquisition. Segment net interest income increased $131 million, or 62%, primarily due to an increase in both average loans and deposits combined with a 47 basis point increase in net interest margin. The provision for credit losses decreased $18 million, or 60%, driven by a reduction in NCOs and improvement in energy related credits. Noninterest income increased $22 million, or 23%, largely driven by an increase in loan commitment and other fees, deposit service charges and capital markets related revenues. Noninterest expense increased $42 million, or 27%, primarily due to an increase in personnel expense, allocated expenses, and amortization of intangibles, partially offset by a decrease in operating lease expense.

35

Commercial Real Estate and Vehicle Finance
Table 24 - Commercial Real Estate and Vehicle Finance
(dollar amounts in thousands unless otherwise noted)
	Six Months Ended June 30,						Change
	2017			2016			Amount			Percent
Net interest income	$	279,700		$	191,214		$	88,486		46	%
Provision (reduction in allowance) for credit losses	30,342			(6,909		)	37,251			N.R.
Noninterest income	23,768			17,950			5,818			32
Noninterest expense	108,635			80,922			27,713			34
Provision for income taxes	57,572			47,303			10,269			22
Net income	$	106,919		$	87,848		$	19,071		22	%
Number of employees (average full-time equivalent)	402			310			92			30	%
Total average assets (in millions)	$	23,903		$	18,329		$	5,574		30
Total average loans/leases (in millions)	22,811			17,288			5,523			32
Total average deposits (in millions)	1,825			1,649			176			11
Net interest margin	2.45		%	2.18		%	0.27		%	12
NCOs	$	19,500		$	(16,888	)	$	36,388		N.R.
NCOs as a % of average loans and leases	0.17		%	(0.19		)%	0.36		%	N.R.

N.R. - Not relevant.

2017 First Six Months vs. 2016 First Six Months

CREVF reported net income of $107 million in the first six-month period of 2017, an increase of $19 million, or 22%, compared to the year-ago period. Results were positively impacted by the FirstMerit acquisition, offset in part by a higher provision for credit losses reflecting significant commercial real estate recoveries in the year ago period. Segment net interest income increased $88 million or 46%, due to both higher loan balances and a 27 basis point increase in the net interest margin primarily reflecting the purchase accounting impact of the acquired loan portfolios. Noninterest income increased $6 million, or 32%, primarily due to a $3 million increase in gains on various equity investments associated with mezzanine lending related activities. Noninterest expense increased $28 million, or 34%, primarily due to an increase in personnel costs and other allocated costs attributed to higher production and portfolio balance levels.

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Regional Banking and The Huntington Private Client Group
Table 25 - Key Performance Indicators for Regional Banking and The Huntington Private Client Group
(dollar amounts in thousands unless otherwise noted)
	Six Months Ended June 30,						Change
	2017			2016			Amount			Percent
Net interest income	$	95,492		$	70,503		$	24,989		35	%
Provision (reduction in allowance) for credit losses	295			(1,173		)	1,468			N.R.
Noninterest income	94,395			79,403			14,992			19
Noninterest expense	123,934			109,172			14,762			14
Provision for income taxes	22,980			14,667			8,313			57
Net income	$	42,678		$	27,240		$	15,438		57	%
Number of employees (average full-time equivalent)	1,034			930			104			11	%
Total average assets (in millions)	$	5,401		$	4,265		$	1,136		27
Total average loans/leases (in millions)	4,699			3,861			838			22
Total average deposits (in millions)	5,927			4,819			1,108			23
Net interest margin	3.33		%	2.95		%	0.38		%	13
NCOs	$	987		$	(3,013	)	$	4,000		N.R.
NCOs as a % of average loans and leases	0.04		%	(0.16		)%	0.20		%	N.R.
Total assets under management (in billions)—eop (1)	$	17.6		$	16.8		$	0.8		5
Total trust assets (in billions)—eop (1)	101.6			93.3			8.3			9

N.R. - Not relevant.

eop - End of Period.

(1) Includes assets associated with FirstMerit.

2017 First Six Months vs. 2016 First Six Months

RBHPCG reported net income of $43 million in the first six-month period of 2017, an increase of $15 million, or 57%, compared to the year-ago period. Results were predominately impacted by the FirstMerit acquisition. Net interest income increased $25 million, or 35%, due to an increase in average total deposits and loans combined with a 38 basis point increase in net interest margin. The increase in average total loans was primarily due to strong growth in commercial and portfolio mortgage loans combined with balance growth from the FirstMerit acquisition, while the increase in average total deposits was mainly due to the acquisition combined with growth in interest checking balances from the Private Client Account. The provision for credit losses increased $1 million, due to lower recoveries in the current period. Noninterest income increased $15 million, or 19%, primarily due to increased trust and investment management revenue related to the increase in trust assets and assets under management that resulted primarily from the FirstMerit acquisition. Noninterest expense increased $15 million, or 14%, as a result of increased personnel expenses and amortization of intangibles resulting from the FirstMerit acquisition.

ADDITIONAL DISCLOSURES

Forward-Looking Statements

This report, including MD&A, contains certain forward-looking statements, including, but not limited to, certain plans, expectations, goals, projections, and statements, which are not historical facts and are subject to numerous assumptions, risks, and uncertainties. Statements that do not describe historical or current facts, including statements about beliefs and expectations, are forward-looking statements. Forward-looking statements may be identified by words such as expect,

37

anticipate, believe, intend, estimate, plan, target, goal, or similar expressions, or future or conditional verbs such as will, may, might, should, would, could, or similar variations. The forward-looking statements are intended to be subject to the safe harbor provided by Section 27A of the Securities Act of 1933, Section 21E of the Securities Exchange Act of 1934, and the Private Securities Litigation Reform Act of 1995.

While there is no assurance that any list of risks and uncertainties or risk factors is complete, below are certain factors which could cause actual results to differ materially from those contained or implied in the forward-looking statements: changes in general economic, political, or industry conditions; uncertainty in U.S. fiscal and monetary policy, including the interest rate policies of the Federal Reserve Board; volatility and disruptions in global capital and credit markets; movements in interest rates; competitive pressures on product pricing and services; success, impact, and timing of our business strategies, including market acceptance of any new products or services implementing our “Fair Play” banking philosophy; the nature, extent, timing, and results of governmental actions, examinations, reviews, reforms, regulations, and interpretations, including those related to the Dodd-Frank Wall Street Reform and Consumer Protection Act and the Basel III regulatory capital reforms, as well as those involving the OCC, Federal Reserve, FDIC, and CFPB; the possibility that the anticipated benefits of the merger with FirstMerit Corporation are not realized when expected or at all, including as a result of the impact of, or problems arising from, the integration of the two companies or as a result of the strength of the economy and competitive factors in the areas where we do business; diversion of management’s attention from ongoing business operations and opportunities; potential adverse reactions or changes to business or employee relationships, including those resulting from the completion of the merger with FirstMerit Corporation; and other factors that may affect our future results. Additional factors that could cause results to differ materially from those described above can be found in our Annual Report on Form 10-K for the year ended December 31, 2016, and Quarterly Report on Form 10-Q for the quarter ended March 31, 2017, which are on file with the Securities and Exchange Commission (the “SEC”) and available in the “Investor Relations” section of our website, http://www.huntington.com, under the heading “Publications and Filings” and in other documents we file with the SEC.

All forward-looking statements speak only as of the date they are made and are based on information available at that time. We do not assume any obligation to update forward-looking statements to reflect circumstances or events that occur after the date the forward-looking statements were made or to reflect the occurrence of unanticipated events except as required by federal securities laws. As forward-looking statements involve significant risks and uncertainties, caution should be exercised against placing undue reliance on such statements.

Non-GAAP Financial Measures

This document contains GAAP financial measures and non-GAAP financial measures where management believes it to be helpful in understanding Huntington’s results of operations or financial position. Where non-GAAP financial measures are used, the comparable GAAP financial measure, as well as the reconciliation to the comparable GAAP financial measure, can be found herein where applicable.

Significant Items

From time-to-time, revenue, expenses, or taxes are impacted by items judged by us to be outside of ordinary banking activities and/or by items that, while they may be associated with ordinary banking activities, are so unusually large that their outsized impact is believed by us at that time to be infrequent or short-term in nature. We refer to such items as Significant Items. Most often, these Significant Items result from factors originating outside the Company; e.g., regulatory actions / assessments, windfall gains, changes in accounting principles, one-time tax assessments / refunds, litigation actions, etc. In other cases, they may result from our decisions associated with significant corporate actions outside of the ordinary course of business; e.g., merger / restructuring charges, recapitalization actions, goodwill impairment, etc.

Even though certain revenue and expense items are naturally subject to more volatility than others due to changes in market and economic environment conditions, as a general rule volatility alone does not define a Significant Item. For example, changes in the provision for credit losses, gains / losses from investment activities, asset valuation writedowns, etc., reflect ordinary banking activities and are, therefore, typically excluded from consideration as a Significant Item.

We believe the disclosure of Significant Items provides a better understanding of our performance and trends to ascertain which of such items, if any, to include or exclude from an analysis of our performance; i.e., within the context of determining how that performance differed from expectations, as well as how, if at all, to adjust estimates of future performance accordingly. To this end, we adopted a practice of listing Significant Items in our external disclosure documents; e.g., earnings press releases, investor presentations, Forms 10-Q and 10-K.

Significant Items for any particular period are not intended to be a complete list of items that may materially impact current or future period performance.

Fully-Taxable Equivalent Basis

38

Interest income, yields, and ratios on a FTE basis are considered non-GAAP financial measures.  Management believes net interest income on a FTE basis provides an insightful picture of the interest margin for comparison purposes.  The FTE basis also allows management to assess the comparability of revenue arising from both taxable and tax-exempt sources.  The FTE basis assumes a federal statutory tax rate of 35 percent. We encourage readers to consider the consolidated financial statements and other financial information contained in this Form 10-Q in their entirety, and not to rely on any single financial measure.

39

Non-Regulatory Capital Ratios

In addition to capital ratios defined by banking regulators, the Company considers various other measures when evaluating capital utilization and adequacy, including:

• Tangible common equity to tangible assets, and

• Tangible common equity to risk-weighted assets using Basel III definitions.

These non-regulatory capital ratios are viewed by management as useful additional methods of reflecting the level of capital available to withstand unexpected market conditions. Additionally, presentation of these ratios allows readers to compare the Company’s capitalization to other financial services companies. These ratios differ from capital ratios defined by banking regulators principally in that the numerator excludes preferred securities, the nature and extent of which varies among different financial services companies. These ratios are not defined in Generally Accepted Accounting Principles (“GAAP”) or federal banking regulations. As a result, these non-regulatory capital ratios disclosed by the Company are considered non-GAAP financial measures.

Because there are no standardized definitions for these non-regulatory capital ratios, the Company’s calculation methods may differ from those used by other financial services companies. Also, there may be limits in the usefulness of these measures to investors. As a result, the Company encourages readers to consider the consolidated financial statements and other financial information contained in this Form 10-Q in their entirety, and not to rely on any single financial measure.

Risk Factors

Information on risk is discussed in the Risk Factors section included in Item 1A of our 2016 Form 10-K. Additional information regarding risk factors can also be found in the Risk Management and Capital discussion of this report.

Critical Accounting Policies and Use of Significant Estimates

Our financial statements are prepared in accordance with GAAP. The preparation of financial statements in conformity with GAAP requires us to establish critical accounting policies and make accounting estimates, assumptions, and judgments that affect amounts recorded and reported in our financial statements. Note 1 of Notes to Consolidated Financial Statements included in our December 31, 2016 Form 10-K, as supplemented by this report, lists significant accounting policies we use in the development and presentation of our financial statements. This MD&A, the significant accounting policies, and other financial statement disclosures identify and address key variables and other qualitative and quantitative factors necessary for an understanding and evaluation of our company, financial position, results of operations, and cash flows.

An accounting estimate requires assumptions about uncertain matters that could have a material effect on the financial statements if a different amount within a range of estimates were used or if estimates changed from period to period. Estimates are made under facts and circumstances at a point in time, and changes in those facts and circumstances could produce results that significantly differ from when those estimates were made.

Our most significant accounting estimates relate to our ACL, valuation of financial instruments, contingent liabilities, income taxes, and deferred tax assets. These significant accounting estimates and their related application are discussed in our December 31, 2016 Form 10-K.

Recent Accounting Pronouncements and Developments

Note 2 of the Notes to Unaudited Condensed Consolidated Financial Statements discusses new accounting pronouncements adopted during 2017 and the expected impact of accounting pronouncements recently issued but not yet required to be adopted. To the extent the adoption of new accounting standards materially affect financial condition, results of operations, or liquidity, the impacts are discussed in the applicable section of this MD&A and the Notes to Unaudited Condensed Consolidated Financial Statements.

40

Item 1: Financial Statements

Huntington Bancshares Incorporated

Condensed Consolidated Balance Sheets

(Unaudited)

(dollar amounts in thousands, except number of shares)	June 30,			December 31,
	2017			2016
Assets
Cash and due from banks	$	1,515,476		$	1,384,770
Interest-bearing deposits in banks	77,148			58,267
Trading account securities	94,767			133,295
Loans held for sale (includes $654,087 and $438,224 respectively, measured at fair value)(1)	748,077			512,951
Available-for-sale and other securities	15,388,306			15,562,837
Held-to-maturity securities	8,279,577			7,806,939
Loans and leases (includes $103,741 and $82,319 respectively, measured at fair value)(1)	68,059,310			66,961,996
Allowance for loan and lease losses	(667,996		)	(638,413		)
Net loans and leases	67,391,314			66,323,583
Bank owned life insurance	2,448,913			2,432,086
Premises and equipment	855,347			815,508
Goodwill	1,992,849			1,992,849
Other intangible assets	373,861			402,458
Servicing rights	224,656			225,578
Accrued income and other assets	2,016,488			2,062,976
Total assets	$	101,406,779		$	99,714,097
Liabilities and shareholders’ equity
Liabilities
Deposits	$	75,933,373		$	75,607,717
Short-term borrowings	4,552,877			3,692,654
Long-term debt	8,536,471			8,309,159
Accrued expenses and other liabilities	1,729,876			1,796,421
Total liabilities	90,752,597			89,405,951
Commitments and contingencies (Note 14)
Shareholders’ equity
Preferred stock	1,071,286			1,071,227
Common stock	10,932			10,886
Capital surplus	9,920,052			9,881,277
Less treasury shares, at cost	(31,288		)	(27,384		)
Accumulated other comprehensive loss	(350,357		)	(401,016		)
Retained (deficit) earnings	33,557			(226,844		)
Total shareholders’ equity	10,654,182			10,308,146
Total liabilities and shareholders’ equity	$	101,406,779		$	99,714,097
Common shares authorized (par value of $0.01)	1,500,000,000			1,500,000,000
Common shares issued	1,093,162,464			1,088,641,251
Common shares outstanding	1,090,016,469			1,085,688,538
Treasury shares outstanding	3,145,995			2,952,713
Preferred stock, authorized shares	6,617,808			6,617,808
Preferred shares issued	2,702,571			2,702,571
Preferred shares outstanding	1,098,006			1,098,006

(1) Amounts represent loans for which Huntington has elected the fair value option. See Note 11.

See Notes to Unaudited Condensed Consolidated Financial Statements

41

Huntington Bancshares Incorporated
Condensed Consolidated Statements of Income
(Unaudited)
(dollar amounts in thousands, except per share amounts)
	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Interest and fee income:
Loans and leases	$	699,838		$	469,770		$	1,375,772		$	933,192
Available-for-sale and other securities
Taxable	78,292			40,992			154,577			80,606
Tax-exempt	18,695			13,795			37,382			26,814
Held-to-maturity securities—taxable	44,276			35,420			89,471			72,209
Other	5,323			5,681			9,582			10,088
Total interest income	846,424			565,658			1,666,784			1,122,909
Interest expense:
Deposits	42,287			22,324			77,077			45,342
Short-term borrowings	5,203			913			11,069			1,811
Federal Home Loan Bank advances	66			72			132			141
Subordinated notes and other long-term debt	54,356			36,468			104,019			66,668
Total interest expense	101,912			59,777			192,297			113,962
Net interest income	744,512			505,881			1,474,487			1,008,947
Provision for credit losses	24,978			24,509			92,616			52,091
Net interest income after provision for credit losses	719,534			481,372			1,381,871			956,856
Service charges on deposit accounts	87,582			75,613			171,002			145,875
Cards and payment processing income	52,485			39,184			99,654			75,631
Mortgage banking income	32,268			31,591			63,960			50,134
Trust and investment management services	32,232			22,497			66,101			45,335
Insurance income	15,843			15,947			31,107			32,172
Brokerage income	16,294			14,599			32,052			30,101
Capital markets fees	16,836			13,037			31,036			26,047
Bank owned life insurance income	15,322			12,536			32,864			26,049
Gain on sale of loans	12,002			9,265			24,824			14,660
Net gains on sales of securities	3,694			732			3,710			732
Impairment losses recognized in earnings on available-for-sale securities	(3,559		)	(76		)	(3,583		)	(76		)
Other noninterest income	44,219			36,187			84,954			66,319
Total noninterest income	325,218			271,112			637,681			512,979
Personnel costs	391,997			298,949			773,997			584,346
Outside data processing and other services	75,169			63,037			162,371			124,915
Equipment	42,924			31,805			89,624			64,381
Net occupancy	52,613			30,704			120,313			62,180
Professional services	18,190			21,488			36,485			35,026
Marketing	18,843			14,773			32,766			27,041
Deposit and other insurance expense	20,418			12,187			40,517			23,395
Amortization of intangibles	14,242			3,600			28,597			7,312
Other noninterest expense	59,968			47,118			117,116			86,145
Total noninterest expense	694,364			523,661			1,401,786			1,014,741
Income before income taxes	350,388			228,823			617,766			455,094
Provision for income taxes	78,647			54,283			137,931			109,240
Net income	271,741			174,540			479,835			345,854
Dividends on preferred shares	18,889			19,874			37,767			27,872
Net income applicable to common shares	$	252,852		$	154,666		$	442,068		$	317,982

42

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands, except per share amounts)	2017			2016			2017			2016
Average common shares—basic	1,088,934			798,167			1,087,654			796,961
Average common shares—diluted	1,108,527			810,371			1,108,572			809,360
Per common share:
Net income—basic	$	0.23		$	0.19		$	0.41		$	0.40
Net income—diluted	0.23			0.19			0.40			0.39
Cash dividends declared	0.08			0.07			0.16			0.14
OTTI losses for the periods presented:
Total OTTI losses	$	(3,563	)	$	(76	)	$	(3,589	)	$	(3,809	)
Noncredit-related portion of loss recognized in OCI	4			—			6			3,733
Impairment losses recognized in earnings on available-for-sale securities	$	(3,559	)	$	(76	)	$	(3,583	)	$	(76	)
See Notes to Unaudited Condensed Consolidated Financial Statements

43

Huntington Bancshares Incorporated

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Net income	$	271,741	$	174,540	$	479,835	$	345,854
Other comprehensive income, net of tax:
Unrealized gains (losses) on available-for-sale and other securities:
Non-credit-related impairment recoveries (losses) on debt securities not expected to be sold	1,602		667		2,126		(1,682		)
Unrealized net gains (losses) on available-for-sale and other securities arising during the period, net of reclassification for net realized gains and losses	37,052		30,603		47,050		82,154
Total unrealized gains (losses) on available-for-sale and other securities	38,654		31,270		49,176		80,472
Unrealized gains (losses) on cash flow hedging derivatives, net of reclassifications to income	1,070		1,134		244		9,963
Change in accumulated unrealized losses for pension and other post-retirement obligations	779		840		1,239		1,681
Other comprehensive income (loss), net of tax	40,503		33,244		50,659		92,116
Comprehensive income	$	312,244	$	207,784	$	530,494	$	437,970

See Notes to Unaudited Condensed Consolidated Financial Statements

44

Huntington Bancshares Incorporated

Condensed Consolidated Statements of Changes in Shareholders’ Equity

(Unaudited)

														Accumulated Other Comprehensive Gain (Loss)			Retained Earnings (Deficit)
(dollar amounts in thousands, except per share amounts)	Preferred Stock		Common Stock			Capital Surplus			Treasury Stock
	Amount		Shares	Amount					Shares		Amount									Total
Six Months Ended June 30, 2016
Balance, beginning of period	$	386,291	796,970	$	7,970	$	7,038,502		(2,041	)	$	(17,932	)	$	(226,158	)	$	(594,067	)	$	6,594,606
Net income																	345,854			345,854
Other comprehensive income (loss)														92,116						92,116
Net proceeds from issuance of Series D preferred stock	584,987																			584,987
Cash dividends declared:
Common ($0.14 per share)																	(111,735		)	(111,735		)
Preferred Series A ($42.50 per share)																	(15,407		)	(15,407		)
Preferred Series B ($16.63 per share)																	(590		)	(590		)
Preferred Series D ($19.79 per share)																	(11,875		)	(11,875		)
Recognition of the fair value of share-based compensation						27,799														27,799
Other share-based compensation activity			4,559	45		7,872											(3,004		)	4,913
Other			—	—		76			(334	)	(3,426		)				(14		)	(3,364		)
Balance, end of period	$	971,278	801,529	$	8,015	$	7,074,249		(2,375	)	$	(21,358	)	$	(134,042	)	$	(390,838	)	$	7,507,304
Six Months Ended June 30, 2017
Balance, beginning of period	$	1,071,227	1,088,641	$	10,886	$	9,881,277		(2,953	)	$	(27,384	)	$	(401,016	)	$	(226,844	)	$	10,308,146
Net income																	479,835			479,835
Other comprehensive income (loss)														50,659						50,659
Cash dividends declared:
Common ($0.16 per share)																	(174,369		)	(174,369		)
Preferred Series A ($42.50 per share)																	(15,406		)	(15,406		)
Preferred Series B ($18.95 per share)																	(673		)	(673		)
Preferred Series C ($29.38 per share)																	(2,938		)	(2,938		)
Preferred Series D ($31.25 per share)																	(18,750		)	(18,750		)
Recognition of the fair value of share-based compensation						52,045														52,045
Other share-based compensation activity			4,514	45		(14,612		)									(7,057		)	(21,624		)
Other	59		7	1		1,342			(193	)	(3,904		)				(241		)	(2,743		)
Balance, end of period	$	1,071,286	1,093,162	$	10,932	$	9,920,052		(3,146	)	$	(31,288	)	$	(350,357	)	$	33,557		$	10,654,182

See Notes to Unaudited Condensed Consolidated Financial Statements

45

Huntington Bancshares Incorporated

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016
Operating activities
Net income	$	479,835		$	345,854
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	92,616			52,091
Depreciation and amortization	210,825			208,249
Share-based compensation expense	52,045			27,799
Net change in:
Trading account securities	38,528			1,708
Loans held for sale	(220,674		)	(307,880		)
Accrued income and other assets	(57,635		)	(97,334		)
Deferred income taxes	11,725			(6,864		)
Accrued expense and other liabilities	(60,182		)	70,554
Other, net	11,661			(7,539		)
Net cash provided by (used for) operating activities	558,744			286,638
Investing activities
Change in interest bearing deposits in banks	19,474			6,942
Proceeds from:
Maturities and calls of available-for-sale and other securities	715,893			467,633
Maturities of held-to-maturity securities	523,309			495,645
Sales of available-for-sale and other securities	411,763			170,986
Purchases of available-for-sale and other securities	(1,891,781		)	(1,405,035		)
Purchases of held-to-maturity securities	(8,616		)	—
Net proceeds from sales of portfolio loans	259,165			234,608
Net loan and lease activity, excluding sales and purchases	(1,429,367		)	(2,220,929		)
Purchases of premises and equipment	(112,566		)	(19,846		)
Proceeds from sales of other real estate	17,802			13,290
Purchases of loans and leases	(93,560		)	(341,985		)
Other, net	8,343			2,698
Net cash provided by (used for) investing activities	(1,580,141		)	(2,595,993		)
Financing activities
Increase (decrease) in deposits	325,656			(256,333		)
Increase (decrease) in short-term borrowings	838,389			1,335,888
Net proceeds from issuance of long-term debt	1,060,697			1,051,794
Maturity/redemption of long-term debt	(843,019		)	(255,750		)
Dividends paid on preferred stock	(37,743		)	(27,872		)
Dividends paid on common stock	(174,168		)	(112,087		)
Proceeds from stock options exercised	6,884			3,887
Net proceeds from issuance of preferred stock	—			584,987
Payments related to tax-withholding for share based compensation awards	(24,593		)	—
Other, net	—			4,865
Net cash provided by (used for) financing activities	1,152,103			2,329,379
Increase (decrease) in cash and cash equivalents	130,706			20,024
Cash and cash equivalents at beginning of period	1,384,770			847,156
Cash and cash equivalents at end of period	$	1,515,476		$	867,180

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	Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016
Supplemental disclosures:
Interest paid	$	185,107	$	107,428
Income taxes paid	54,434		3,099
Non-cash activities
Loans transferred to held-for-sale from portfolio	298,331		266,527
Loans transferred to portfolio from held-for-sale	1,265		10,661
Transfer of loans to OREO	16,926		12,974
Transfer of securities to held to maturity from available for sale	992,760		—

See Notes to Unaudited Condensed Consolidated Financial Statements

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Huntington Bancshares Incorporated

Notes to Unaudited Condensed Consolidated Financial Statements

1. BASIS OF PRESENTATION

The accompanying Unaudited Condensed Consolidated Financial Statements of Huntington reflect all adjustments consisting of normal recurring accruals which are, in the opinion of Management, necessary for a fair statement of the consolidated financial position, the results of operations, and cash flows for the periods presented. The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by GAAP. These Unaudited Condensed Consolidated Financial Statements have been prepared according to the rules and regulations of the SEC and, therefore, certain information and footnote disclosures normally included in annual financial statements prepared in accordance with GAAP have been omitted. The Notes to Consolidated Financial Statements appearing in Huntington’s 2016 Form 10-K, which include descriptions of significant accounting policies, as updated by the information contained in this report, should be read in conjunction with these interim financial statements.

For statement of cash flows purposes, cash and cash equivalents are defined as the sum of “Cash and due from banks” which includes amounts on deposit with the Federal Reserve and “Federal funds sold and securities purchased under resale agreements.”

In conjunction with applicable accounting standards, all material subsequent events have been either recognized in the Unaudited Condensed Consolidated Financial Statements or disclosed in the Notes to Unaudited Condensed Consolidated Financial Statements.

Certain amounts reported in prior periods have been reclassified to conform to the current period presentation.

2. ACCOUNTING STANDARDS UPDATE

ASU 2014-09—Revenue from Contracts with Customers (Topic 606): The amendments in ASU 2014-09 supersede the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. The general principle of the amendments require an entity to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance sets forth a five step approach for revenue recognition. The amendments are effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Management intends to adopt the new guidance on January 1, 2018 using the modified retrospective approach and is well into its outlined implementation plan. In this regard, management has completed a preliminary analysis that includes (a) identification of all revenue streams included in the financial statements; (b) determination of scope exclusions to identify ‘in-scope’ revenue streams; (c) determination of size, timing, and amount of revenue recognition for in-scope items; (d) determination of sample size of contracts for further analysis; and (e) completion of limited analysis on selected contracts to evaluate the potential impact of the new guidance. The key revenue streams identified include service charges, credit card and payment processing fees, trust services fees, insurance income, brokerage services, and mortgage banking income. The new guidance is not expected to have a significant impact on Huntington’s Unaudited Consolidated Financial Statements.

ASU 2016-01 - Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this Update make targeted improvements to GAAP including, but not limited to, requiring an entity to measure its equity investments with changes in the fair value recognized in the income statement; requiring an entity to present separately in OCI the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments (i.e., FVO liability); requiring public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; assessing deferred tax assets related to a net unrealized loss on AFS securities in combination with the entity’s other deferred tax assets; and eliminating some of the disclosures required by the existing GAAP while requiring entities to present and disclose some additional information. The new guidance is effective for the fiscal period beginning after December 15, 2017, including interim periods within those fiscal years. An entity should apply the amendments as a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendment is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2016-02 - Leases. This Update sets forth a new lease accounting model for lessors and lessees. For lessees, virtually all leases will be required to be recognized on the balance sheet by recording a right-of-use asset and lease liability. Subsequent accounting for leases varies depending on whether the lease is an operating lease or a finance lease. The accounting applied by a lessor is largely unchanged from that applied under the existing guidance. The ASU requires additional qualitative and quantitative disclosures with the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The Update is effective for the fiscal period beginning after December 15, 2018,

48

with early application permitted. Management is currently assessing the impact of the new guidance on Huntington's Unaudited Consolidated Financial Statements. Huntington expects to recognize a right-of-use asset and a lease liability for its operating lease commitments.

ASU 2016-13 - Financial Instruments - Credit Losses. The amendments in this Update eliminate the probable recognition threshold for credit losses on financial assets measured at amortized cost. The Update requires those financial assets to be presented at the net amount expected to be collected (i.e., net of expected credit losses). The measurement of expected credit losses should be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. The Update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018. The amendments should be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. Management currently intends to adopt the guidance on January 1, 2020 and is assessing the impact of this Update on Huntington's Unaudited Consolidated Financial Statements. Management has formed a working group comprised of teams from different disciplines including credit and finance. The working group is currently evaluating the requirements of the new standard and the impact it will have on our processes. The early stages of this evaluation include a review of existing credit models to identify areas where existing credit models used to comply with other regulatory requirements may be leveraged and areas where new impairment models may be required.

ASU 2016-15 - Classification of Certain Cash Receipts and Cash Payments. The amendments in this Update add or clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. Current guidance lacks consistent principles for evaluating the classification of cash payments and receipts in the statement of cash flows. This has led to diversity in practice and, in certain circumstances, financial statement restatements. Therefore, the FASB issued the ASU with the intent of reducing diversity in practice with respect to several types of cash flows. The amendments in this Update are effective using a retrospective transition approach for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. This Update is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2017-04 - Simplifying the Test for Goodwill Impairment. The Update simplifies the goodwill impairment test. Under the new guidance, Step 2 of the goodwill impairment process that requires an entity to determine the implied fair value of its goodwill by assigning fair value to all its assets and liabilities, is eliminated. Instead, the entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The new guidance is effective for annual and interim goodwill tests performed in fiscal years beginning after December 15, 2019. Early adoption is permitted. The amendment is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2017-07 - Improving the Presentation of Net Periodic Pension Cost and Periodic Postretirement Benefit Cost. The amendments in this Update require that an employer report the service cost component of the pension cost and postretirement benefit cost in the same line items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of the net benefit cost should be presented in the income statement separately from the service cost component. The amendments in this Update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted as of the beginning of an annual period for which financial statements have not been issued or made available for issuance. This Update is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2017-09 - Stock Compensation Modification Accounting. The Update reduces the current diversity in practice and provides explicit guidance pertaining to the provisions of modification accounting. The Update clarifies that an entity should account for effects of modification unless the fair value, vesting conditions and the classification of the modified award are the same as of the original awards immediately before the original award is modified. The Update is effective prospectively for annual periods and interim periods within those annual periods, beginning after December 15, 2017. Earlier application is permitted. The Update is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

3. LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES

Loans and leases for which Huntington has the intent and ability to hold for the foreseeable future, or until maturity or payoff, are classified in the Unaudited Condensed Consolidated Balance Sheets as loans and leases. Except for loans which are accounted for at fair value, loans are carried at the principal amount outstanding, net of unamortized premiums and discounts

49

and deferred loan fees and costs and purchase accounting adjustments, which resulted in a net premium of $245 million and $120 million at June 30, 2017 and December 31, 2016, respectively.

Loan and Lease Portfolio Composition

The following table provides a detailed listing of Huntington’s loan and lease portfolio at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	June 30, 2017			December 31, 2016
Loans and leases:
Commercial and industrial	$	27,969,151		$	28,058,712
Commercial real estate	7,145,151			7,300,901
Automobile	11,555,137			10,968,782
Home equity	9,965,534			10,105,774
Residential mortgage	8,237,297			7,724,961
RV and marine finance	2,177,732			1,846,447
Other consumer	1,009,308			956,419
Loans and leases	68,059,310			66,961,996
Allowance for loan and lease losses	(667,996		)	(638,413		)
Net loans and leases	$	67,391,314		$	66,323,583

Purchased Credit-Impaired Loans

The following table presents a rollforward of the accretable yield for purchased credit impaired loans for the three-month and six-month period ended June 30, 2017: and 2016:

	Three Months Ended June 30,			Six Months Ended June 30,
(dollar amounts in thousands)	2017			2017
FirstMerit
Balance, beginning of period	$	37,372		$	36,669
Accretion	(4,788		)	(9,490		)
Reclassification (to) from nonaccretable difference	3,925			9,330
Balance, end of period	$	36,509		$	36,509

The following table reflects the ending and unpaid balances of the purchase credit impaired loans at June 30, 2017 and December 31, 2016:

	June 30, 2017						December 31, 2016
(dollar amounts in thousands)	Ending Balance		Unpaid Balance		ALLL		Ending Balance		Unpaid Balance		ALLL
FirstMerit
Commercial and industrial	$	54,942	$	81,934	$	970	$	68,338	$	100,031	$	—
Commercial real estate	20,780		34,904		—		34,042		56,320		—
Total	$	75,722	$	116,838	$	970	$	102,380	$	156,351	$	—

During the second quarter 2017, an allowance for loan losses was recorded on the Commercial and industrial purchased credit-impaired portfolio for $1 million.

NALs and Past Due Loans

Loans are considered past due when the contractual amounts due with respect to principal and interest are not received within 30 days of the contractual due date. See Note 1 “Significant Accounting Policies” to the consolidated financial

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statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of the accounting policies related to the ACL.

The following table presents NALs by loan class at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	June 30, 2017		December 31, 2016
Commercial and industrial	$	195,279	$	234,184
Commercial real estate	16,763		20,508
Automobile	3,825		5,766
Home equity	67,940		71,798
Residential mortgage	80,306		90,502
RV and marine finance	341		245
Other consumer	2		—
Total nonaccrual loans	$	364,456	$	423,003

The following table presents an aging analysis of loans and leases, including past due loans, by loan class at June 30, 2017 and December 31, 2016: (1)

	June 30, 2017
	Past Due												Loans Accounted for Under the Fair Value Option		Total Loans and Leases		90 or more days past due and accruing
(dollar amounts in thousands)	30-59 Days		60-89  Days		90 or  more days		Total		Current		Purchased Credit Impaired
Commercial and industrial	$	44,796	$	13,608	$	84,609	$	143,013	$	27,771,196	$	54,942	$	—	$	27,969,151	$	21,501	(2)
Commercial real estate	7,382		3,918		27,314		38,614		7,085,757		20,780		—		7,145,151		17,040
Automobile	68,600		15,241		8,716		92,557		11,461,169		—		1,411		11,555,137		8,594
Home equity	44,513		16,463		61,159		122,135		9,840,922		—		2,477		9,965,534		18,459
Residential mortgage	117,779		40,327		110,842		268,948		7,869,927		—		98,422		8,237,297		65,159		(3)
RV and marine finance	8,072		2,443		2,666		13,181		2,163,346		—		1,205		2,177,732		2,464
Other consumer	9,913		4,081		3,146		17,140		991,942		—		226		1,009,308		3,143
Total loans and leases	$	301,055	$	96,081	$	298,452	$	695,588	$	67,184,259	$	75,722	$	103,741	$	68,059,310	$	136,360

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	December 31, 2016
	Past Due												Loans Accounted for Under the Fair Value Option		Total Loans and Leases		90 or more days past due and accruing
(dollar amounts in thousands)	30-59 Days		60-89  Days		90 or  more days		Total		Current		Purchased Credit Impaired
Commercial and industrial	42,052		20,136		74,174		136,362		27,854,012		68,338		—		28,058,712		18,148		(2)
Commercial real estate	21,187		3,202		29,659		54,048		7,212,811		34,042		—		7,300,901		17,215
Automobile loans	76,283		17,188		10,442		103,913		10,862,715		—		2,154		10,968,782		10,182
Home equity	38,899		23,903		53,002		115,804		9,986,697		—		3,273		10,105,774		11,508
Residential mortgage	122,469		37,460		116,682		276,611		7,373,414		—		74,936		7,724,961		66,952		(3)
RV and marine finance	10,009		2,230		1,566		13,805		1,831,123		—		1,519		1,846,447		1,462
Other consumer	9,442		4,324		3,894		17,660		938,322		—		437		956,419		3,895
Total loans and leases	$	320,341	$	108,443	$	289,419	$	718,203	$	66,059,094	$	102,380	$	82,319	$	66,961,996	$	129,362

(1) NALs are included in this aging analysis based on the loan’s past due status.

(2) Amounts include Huntington Technology Finance administrative lease delinquencies.

(3) Amounts include loans guaranteed by government organizations.

Allowance for Credit Losses

Huntington maintains two reserves, both of which reflect management’s judgment regarding the appropriate level necessary to absorb credit losses inherent in our loan and lease portfolio: the ALLL and the AULC. Combined, these reserves comprise the total ACL. The determination of the ACL requires significant estimates, including the timing and amounts of expected future cash flows on impaired loans and leases, consideration of current economic conditions, and historical loss experience pertaining to pools of homogeneous loans and leases, all of which may be susceptible to change. See Note 1 “Significant Accounting Policies” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of the accounting policies related to the ACL.

The ACL is increased through a provision for credit losses that is charged to earnings, based on Management’s quarterly evaluation and is reduced by charge-offs, net of recoveries, and the ACL associated with loans sold or transferred to held for sale.

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The following table presents ALLL and AULC activity by portfolio segment for the three-month and six-month periods ended June 30, 2017 and 2016:

(dollar amounts in thousands)	Commercial			Consumer			Total
Three-month period ended June 30, 2017:
ALLL balance, beginning of period	$	480,308		$	192,272		$	672,580
Loan charge-offs	(15,103		)	(41,345		)	(56,448		)
Recoveries of loans previously charged-off	5,787			14,621			20,408
Provision for (reduction in allowance) loan and lease losses	3,585			27,872			31,457
Allowance for loans sold or transferred to loans held for sale	(1		)	—			(1		)
ALLL balance, end of period	$	474,576		$	193,420		$	667,996
AULC balance, beginning of period	$	88,899		$	2,939		$	91,838
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(6,072		)	(407		)	(6,479		)
AULC balance, end of period	$	82,827		$	2,532		$	85,359
ACL balance, end of period	$	557,403		$	195,952		$	753,355
Six-month period ended June 30, 2017:
ALLL balance, beginning of period	$	451,091		$	187,322		$	638,413
Loan charge-offs	(38,773		)	(88,390		)	(127,163		)
Recoveries of loans previously charged-off	23,604			28,081			51,685
Provision for (reduction in allowance) loan and lease losses	38,729			66,407			105,136
Allowance for loans sold or transferred to loans held for sale	(75		)	—			(75		)
ALLL balance, end of period	$	474,576		$	193,420		$	667,996
AULC balance, beginning of period	$	86,543		$	11,336		$	97,879
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(3,716		)	(8,804		)	(12,520		)
AULC balance, end of period	$	82,827		$	2,532		$	85,359
ACL balance, end of period	$	557,403		$	195,952		$	753,355

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(dollar amounts in thousands)	Commercial			Consumer			Total
Three-month period ended June 30, 2016:
ALLL balance, beginning of period	$	422,441		$	191,278		$	613,719
Loan charge-offs	(16,933		)	(26,612		)	(43,545		)
Recoveries of loans previously charged-off	13,904			12,886			26,790
Provision for (reduction in allowance) loan and lease losses	5,095			20,991			26,086
Allowance for loans sold or transferred to loans held for sale	—			14			14
ALLL balance, end of period	$	424,507		$	198,557		$	623,064
AULC balance, beginning of period	$	65,872		$	9,453		$	75,325
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(2,155		)	578			(1,577		)
AULC balance, end of period	$	63,717		$	10,031		$	73,748
ACL balance, end of period	$	488,224		$	208,588		$	696,812
Six-month period ended June 30, 2016:
ALLL balance, beginning of period	$	398,753		$	199,090		$	597,843
Loan charge-offs	(45,882		)	(57,355		)	(103,237		)
Recoveries of loans previously charged-off	53,815			24,115			77,930
Provision for (reduction in allowance) loan and lease losses	17,821			32,603			50,424
Allowance for loans sold or transferred to loans held for sale	—			104			104
ALLL balance, end of period	$	424,507		$	198,557		$	623,064
AULC balance, beginning of period	$	63,448		$	8,633		$	72,081
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	269			1,398			1,667
AULC balance, end of period	$	63,717		$	10,031		$	73,748
ACL balance, end of period	$	488,224		$	208,588		$	696,812

Credit Quality Indicators

See Note 4 “Loans / Leases and Allowance for Credit Losses” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of the credit quality indicators Huntington utilizes for monitoring credit quality and for determining an appropriate ACL level.

The following table presents each loan and lease class by credit quality indicator at June 30, 2017 and December 31, 2016:

	June 30, 2017
	Credit Risk Profile by UCS Classification
(dollar amounts in thousands)	Pass		OLEM		Substandard		Doubtful		Total
Commercial
Commercial and industrial	$	26,006,917	$	798,643	$	1,138,508	$	25,083	$	27,969,151
Commercial real estate	6,923,159		88,932		132,017		1,043		7,145,151
	Credit Risk Profile by FICO Score (1), (2)
	750+		650-749		<650		Other (3)		Total
Consumer
Automobile	$	5,728,416	$	4,202,063	$	1,350,925	$	272,322	$	11,553,726
Home equity	6,296,801		3,013,152		619,661		33,443		9,963,057
Residential mortgage	4,945,403		2,449,297		610,720		133,455		8,138,875
RV and marine finance	1,287,480		774,873		85,844		28,330		2,176,527
Other consumer	386,659		481,324		135,161		5,938		1,009,082

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	December 31, 2016
	Credit Risk Profile by UCS Classification
(dollar amounts in thousands)	Pass		OLEM		Substandard		Doubtful		Total
Commercial
Commercial and industrial	$	26,211,885	$	810,287	$	1,028,819	$	7,721	$	28,058,712
Commercial real estate	7,042,304		96,975		159,098		2,524		7,300,901
	Credit Risk Profile by FICO Score (1), (2)
	750+		650-749		<650		Other (3)		Total
Consumer
Automobile	$	5,369,085	$	4,043,611	$	1,298,460	$	255,472	$	10,966,628
Home equity	6,280,328		2,891,330		637,560		293,283		10,102,501
Residential mortgage	4,662,777		2,285,121		615,067		87,060		7,650,025
RV and marine finance	1,064,143		644,039		72,995		63,751		1,844,928
Other consumer	346,867		455,959		133,243		19,913		955,982

(1) Excludes loans accounted for under the fair value option.

(2) Reflects most recent customer credit scores.

(3) Reflects deferred fees and costs, loans in process, loans to legal entities, etc.

Impaired Loans

See Note 1 “Significant Accounting Policies” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of accounting policies related to impaired loans.

The following tables present the balance of the ALLL attributable to loans by portfolio segment individually and collectively evaluated for impairment and the related loan and lease balance at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	Commercial		Consumer		Total
ALLL at June 30, 2017:
Portion of ALLL balance:
Purchased credit-impaired loans	$	970	$	—	$	970
Attributable to loans individually evaluated for impairment	14,239		9,044		23,283
Attributable to loans collectively evaluated for impairment	459,367		184,376		643,743
Total ALLL balance	$	474,576	$	193,420	$	667,996
Loan and Lease Ending Balances at June 30, 2017: (1)
Portion of loan and lease ending balance:
Purchased credit-impaired loans	$	75,722	$	—	$	75,722
Individually evaluated for impairment	441,499		451,192		892,691
Collectively evaluated for impairment	34,597,081		32,390,075		66,987,156
Total loans and leases evaluated for impairment	$	35,114,302	$	32,841,267	$	67,955,569

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(dollar amounts in thousands)	Commercial		Consumer		Total
ALLL at December 31, 2016
Portion of ALLL balance:
Attributable to loans individually evaluated for impairment	$	10,525	$	11,021	$	21,546
Attributable to loans collectively evaluated for impairment	440,566		176,301		616,867
Total ALLL balance:	$	451,091	$	187,322	$	638,413
Loan and Lease Ending Balances at December 31, 2016 (1)
Portion of loan and lease ending balances:
Purchased credit-impaired loans	$	102,380	$	—	$	102,380
Individually evaluated for impairment	415,624		457,890		873,514
Collectively evaluated for impairment	34,841,609		31,062,174		65,903,783
Total loans and leases evaluated for impairment	$	35,359,613	$	31,520,064	$	66,879,677

(1) Excludes loans accounted for under the fair value option.

The following tables present by class the ending, unpaid principal balance, and the related ALLL, along with the average balance and interest income recognized only for impaired loans and leases and purchased credit-impaired loans: (1), (2)

	June 30, 2017						Three Months Ended June 30, 2017				Six Months Ended June 30, 2017
(dollar amounts in thousands)	Ending Balance		Unpaid Principal Balance (5)		Related Allowance		Average Balance		Interest Income Recognized		Average Balance		Interest Income Recognized
With no related allowance recorded:
Commercial and industrial	$	261,285	$	270,571	$	—	$	262,631	$	4,852	$	268,041	$	9,352
Commercial real estate	76,463		106,248		—		82,296		1,937		84,865		3,937
Automobile	—		—		—		—		—		—		—
Home equity	—		—		—		—		—		—		—
Residential mortgage	—		—		—		—		—		—		—
RV and marine finance	—		—		—		—		—		—		—
Other consumer	—		—		—		—		—		—		—
With an allowance recorded:
Commercial and industrial (3)	283,409		342,188		24,423		258,066		2,002		310,611		3,908
Commercial real estate (4)	34,270		41,695		2,340		38,753		453		58,563		920
Automobile	32,431		32,642		1,889		32,581		546		32,041		1,080
Home equity (6)	325,805		357,738		17,844		326,280		3,977		323,988		7,927
Residential mortgage (6)	329,050		363,277		11,578		339,289		2,903		335,444		6,013
RV and marine finance	1,331		1,355		134		1,009		23		672		34
Other consumer	4,126		4,126		253		4,186		55		4,090		111
Total
Commercial and industrial	544,694		612,759		24,423		520,697		6,854		578,652		13,260
Commercial real estate	110,733		147,943		2,340		121,049		2,390		143,428		4,857
Automobile	32,431		32,642		1,889		32,581		546		32,041		1,080
Home equity	325,805		357,738		17,844		326,280		3,977		323,988		7,927
Residential mortgage	329,050		363,277		11,578		339,289		2,903		335,444		6,013
RV and marine finance	1,331		1,355		134		1,009		23		672		34
Other consumer	4,126		4,126		253		4,186		55		4,090		111

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	December 31, 2016						Three Months Ended June 30, 2016				Six Months Ended June 30, 2016
(dollar amounts in thousands)	Ending Balance		Unpaid Principal Balance (5)		Related Allowance		Average Balance		Interest Income Recognized		Average Balance		Interest Income Recognized
With no related allowance recorded:
Commercial and industrial	$	299,606	$	358,712	$	—	$	289,138	$	2,392	$	284,128	$	4,623
Commercial real estate	88,817		126,152		—		72,569		1,855		72,640		3,472
Automobile	—		—		—		—		—		—		—
Home equity	—		—		—		—		—		—		—
Residential mortgage	—		—		—		1,298		109		1,350		111
RV and marine finance	—		—		—		—		—		—		—
Other consumer	—		—		—		19		2		30		104
With an allowance recorded:
Commercial and industrial (3)	406,243		448,121		22,259		291,761		1,739		269,518		3,829
Commercial real estate (4)	97,238		107,512		3,434		58,357		615		69,501		1,373
Automobile	30,961		31,298		1,850		32,032		524		31,789		1,102
Home equity (6)	319,404		352,722		15,032		248,056		2,962		248,317		5,930
Residential mortgage (6)	327,753		363,099		12,849		352,489		3,027		357,324		6,064
RV and marine finance	—		—		—		—		—		—		—
Other consumer	3,897		3,897		260		4,812		53		4,754		120
Total
Commercial and industrial	705,849		806,833		22,259		580,899		4,131		553,646		8,452
Commercial real estate	186,055		233,664		3,434		130,926		2,470		142,141		4,845
Automobile	30,961		31,298		1,850		32,032		524		31,789		1,102
Home equity	319,404		352,722		15,032		248,056		2,962		248,317		5,930
Residential mortgage	327,753		363,099		12,849		353,787		3,136		358,674		6,175
RV and marine finance	—		—		—		—		—		—		—
Other consumer	3,897		3,897		260		4,831		55		4,784		224

(1) These tables do not include loans fully charged-off.

(2) All automobile, RV and marine finance and other consumer impaired loans included in these tables are considered impaired due to their status as a TDR.

(3) At June 30, 2017 and December 31, 2016, commercial and industrial loans of $115 million and $293 million, respectively, were considered impaired due to their status as a TDR.

(4) At June 30, 2017 and December 31, 2016, commercial real estate loans of $23 million and $81 million, respectively, were considered impaired due to their status as a TDR.

(5) The differences between the ending balance and unpaid principal balance amounts represent partial charge-offs.

(6) Includes home equity and residential mortgages considered to be collateral dependent as well as home equity and mortgage loans considered impaired due to their status as a TDR.

TDR Loans

TDRs are modified loans where a concession was provided to a borrower experiencing financial difficulties. Loan modifications are considered TDRs when the concessions provided are not available to the borrower through either normal channels or other sources. However, not all loan modifications are TDRs. Acquired, non-purchased credit impaired loan are only considered for TDR reporting for modifications made subsequent to acquisition. See Note 4 “Loans / Leases and Allowance for Credit Losses” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for an additional discussion of TDRs.

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The following table presents by class and modification type, the number of contracts, post-modification outstanding balance, and the financial effects of the modification for the three-month and six-month periods ended June 30, 2017 an 2016:

	New Troubled Debt Restructurings During The Three-Month Period Ended (1)
	June 30, 2017						June 30, 2016
(dollar amounts in thousands)	Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)			Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)
Commercial and industrial:
Interest rate reduction	1	$	18	$	—		1	$	22	$	—
Amortization or maturity date change	228	168,118		(6,856		)	199	133,933		(3,490		)
Other	1	220		—			2	232		—
Total Commercial and industrial	230	168,356		(6,856		)	202	134,187		(3,490		)
Commercial real estate:
Interest rate reduction	—	—		—			1	84		—
Amortization or maturity date change	19	25,027		(427		)	36	16,017		(723		)
Other	—	—		—			2	52		—
Total commercial real estate:	19	25,027		(427		)	39	16,153		(723		)
Automobile:
Interest rate reduction	5	58		1			3	64		5
Amortization or maturity date change	334	2,853		67			286	2,663		202
Chapter 7 bankruptcy	198	1,494		18			244	1,982		114
Other	—	—		—			—	—		—
Total Automobile	537	4,405		86			533	4,709		321
Home equity:
Interest rate reduction	9	506		6			9	627		26
Amortization or maturity date change	135	8,372		(754		)	127	6,401		(736		)
Chapter 7 bankruptcy	77	2,417		364			46	2,114		267
Other	12	512		—			—	—		—
Total Home equity	233	11,807		(384		)	182	9,142		(443		)
Residential mortgage:
Interest rate reduction	—	—		—			5	404		17
Amortization or maturity date change	81	8,296		(231		)	108	10,641		(420		)
Chapter 7 bankruptcy	25	1,981		(1		)	6	1,178		(49		)
Other	5	464		3			1	164		—
Total Residential mortgage	111	10,741		(229		)	120	12,387		(452		)
RV and marine finance:
Interest rate reduction	—	—		—			—	—		—
Amortization or maturity date change	10	150		4			—	—		—
Chapter 7 bankruptcy	34	544		6			—	—		—
Other	—	—		—			—	—		—
Total RV and marine finance	44	694		10			—	—		—
Other consumer:
Interest rate reduction	—	—		—			—	—		—
Amortization or maturity date change	2	21		—			1	4		—
Chapter 7 bankruptcy	2	8		—			—	—		—
Other	—	—		—			—	—		—
Total Other consumer	4	29		—			1	4		—
Total new troubled debt restructurings	1,178	$	221,059	$	(7,800	)	1,077	$	176,582	$	(4,787	)

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	New Troubled Debt Restructurings During The Six-Month Period Ended (1)
	June 30, 2017						June 30, 2016
(dollar amounts in thousands)	Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)			Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)
Commercial and industrial:
Interest rate reduction	2	$	37	$	6		2	$	39	$	(1	)
Amortization or maturity date change	464	280,543		(7,858		)	383	256,591		(2,918		)
Other	4	380		(27		)	10	1,090		(4		)
Total Commercial and industrial	470	280,960		(7,879		)	395	257,720		(2,923		)
Commercial real estate:
Interest rate reduction	—	—		—			1	84		—
Amortization or maturity date change	43	56,290		(815		)	60	49,812		(1,282		)
Other	—	—		—			4	315		16
Total commercial real estate:	43	56,290		(815		)	65	50,211		(1,266		)
Automobile:
Interest rate reduction	19	236		6			7	106		7
Amortization or maturity date change	811	7,154		178			707	6,564		422
Chapter 7 bankruptcy	438	3,316		47			561	4,544		229
Other	—	—		—			—	—		—
Total Automobile	1,268	10,706		231			1,275	11,214		658
Home equity:
Interest rate reduction	17	1,068		13			29	2,011		93
Amortization or maturity date change	241	13,868		(1,428		)	356	18,291		(2,018		)
Chapter 7 bankruptcy	164	6,036		1,402			145	5,711		1,000
Other	70	4,241		(326		)	—	—		—
Total Home equity	492	25,213		(339		)	530	26,013		(925		)
Residential mortgage:
Interest rate reduction	2	110		(9		)	10	1,061		(15		)
Amortization or maturity date change	180	19,367		(489		)	200	21,400		(997		)
Chapter 7 bankruptcy	49	4,672		(137		)	23	2,683		21
Other	21	2,384		17			1	164		—
Total Residential mortgage	252	26,533		(618		)	234	25,308		(991		)
RV and marine finance:
Interest rate reduction	—	—		—			—	—		—
Amortization or maturity date change	24	626		16			—	—		—
Chapter 7 bankruptcy	49	754		10			—	—		—
Other	—	—		—			—	—		—
Total RV and marine finance	73	1,380		26			—	—		—
Other consumer:
Interest rate reduction	1	78		2			—	—		—
Amortization or maturity date change	4	288		7			5	559		24
Chapter 7 bankruptcy	3	12		—			7	66		7
Other	—	—		—			—	—		—
Total Other consumer	8	378		9			12	625		31
Total new troubled debt restructurings	2,606	$	401,460	$	(9,385	)	2,511	$	371,091	$	(5,416	)

(1) TDRs may include multiple concessions and the disclosure classifications are based on the primary concession provided to the borrower.

(2)Amount represents the financial impact via provision for loan and lease losses as a result of the modificatiPledged Loans and Leases

At June 30, 2017, the Bank has access to the Federal Reserve’s discount window and advances from the FHLB – Cincinnati. As of June 30, 2017, these borrowings and advances are secured by $30.4 billion of loans and securities.

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4. AVAILABLE-FOR-SALE AND OTHER SECURITIES

Listed below are the contractual maturities of available-for-sale and other securities at June 30, 2017 and December 31, 2016:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
U.S. Treasury, Federal agency, and other agency securities:
U.S. Treasury:
1 year or less	$	10,139	$	10,139	$	4,978	$	4,988
After 1 year through 5 years	502		505		502		509
After 5 years through 10 years	—		—		—		—
After 10 years	—		—		—		—
Total U.S. Treasury	10,641		10,644		5,480		5,497
Federal agencies: mortgage-backed securities:
1 year or less	—		—		—		—
After 1 year through 5 years	28,085		27,891		46,591		46,762
After 5 years through 10 years	200,334		199,224		173,941		176,404
After 10 years	10,536,086		10,396,940		10,630,929		10,450,176
Total Federal agencies: mortgage-backed securities	10,764,505		10,624,055		10,851,461		10,673,342
Other agencies:
1 year or less	4,103		4,142		4,302		4,367
After 1 year through 5 years	9,498		9,647		5,092		5,247
After 5 years through 10 years	86,049		86,502		63,618		63,928
After 10 years	—		—		—		—
Total other agencies	99,650		100,291		73,012		73,542
Total U.S. Treasury, Federal agency, and other agency securities	10,874,796		10,734,990		10,929,953		10,752,381
Municipal securities:
1 year or less	120,216		121,345		169,636		166,887
After 1 year through 5 years	1,113,974		1,123,450		933,893		933,903
After 5 years through 10 years	1,493,652		1,508,930		1,463,459		1,464,583
After 10 years	555,096		558,775		693,440		684,684
Total municipal securities	3,282,938		3,312,500		3,260,428		3,250,057
Asset-backed securities:
1 year or less	—		—		—		—
After 1 year through 5 years	80,018		80,177		80,700		80,560
After 5 years through 10 years	144,969		146,256		223,352		224,565
After 10 years	389,154		368,366		520,072		488,356
Total asset-backed securities	614,141		594,799		824,124		793,481
Corporate debt:
1 year or less	3,238		3,268		43,223		43,603
After 1 year through 5 years	64,369		65,808		78,430		80,196
After 5 years through 10 years	49,546		51,878		32,523		32,865
After 10 years	21,386		23,081		40,361		42,019
Total corporate debt	138,539		144,035		194,537		198,683
Other:
1 year or less	3,151		3,142		1,650		1,650
After 1 year through 5 years	800		790		2,302		2,283
After 5 years through 10 years	—		—		—		—
After 10 years	94		94		10		10
Nonmarketable equity securities	585,472		585,471		547,704		547,704
Mutual funds	11,184		11,184		15,286		15,286
Marketable equity securities	861		1,301		861		1,302
Total other	601,562		601,982		567,813		568,235
Total available-for-sale and other securities	$	15,511,976	$	15,388,306	$	15,776,855	$	15,562,837

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Other securities at June 30, 2017 and December 31, 2016 include nonmarketable equity securities of $287 million and $249 million of stock issued by the FHLB and $298 million and $299 million of Federal Reserve Bank stock, respectively. Non-marketable equity securities are recorded at amortized cost. Other securities also include Mutual funds and marketable equity securities.

The following tables provide amortized cost, fair value, and gross unrealized gains and losses recognized in OCI by investment category at June 30, 2017 and December 31, 2016:

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
June 30, 2017
U.S. Treasury	$	10,641	$	3	$	—		$	10,644
Federal agencies:
Mortgage-backed securities	10,764,505		8,652		(149,102		)	10,624,055
Other agencies	99,650		689		(48		)	100,291
Total U.S. Treasury, Federal agency securities	10,874,796		9,344		(149,150		)	10,734,990
Municipal securities	3,282,938		47,711		(18,149		)	3,312,500
Asset-backed securities	614,141		2,256		(21,598		)	594,799
Corporate debt	138,539		5,500		(4		)	144,035
Other securities	601,562		439		(19		)	601,982
Total available-for-sale and other securities	$	15,511,976	$	65,250	$	(188,920	)	$	15,388,306

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
December 31, 2016
U.S. Treasury	$	5,480	$	17	$	—		$	5,497
Federal agencies:
Mortgage-backed securities	10,851,461		12,548		(190,667		)	10,673,342
Other agencies	73,012		536		(6		)	73,542
Total U.S. Treasury, Federal agency securities	10,929,953		13,101		(190,673		)	10,752,381
Municipal securities	3,260,428		28,431		(38,802		)	3,250,057
Asset-backed securities	824,124		1,492		(32,135		)	793,481
Corporate debt	194,537		4,161		(15		)	198,683
Other securities	567,813		441		(19		)	568,235
Total available-for-sale and other securities	$	15,776,855	$	47,626	$	(261,644	)	$	15,562,837

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The following tables provide detail on investment securities with unrealized gross losses aggregated by investment category and the length of time the individual securities have been in a continuous loss position, at June 30, 2017 and December 31, 2016:

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
June 30, 2017
Federal agencies:
Mortgage-backed securities	$	8,879,526	$	(147,900	)	$	42,504	$	(1,202	)	$	8,922,030	$	(149,102	)
Other agencies	12,793		(48		)	—		—			12,793		(48		)
Total Federal agency securities	8,892,319		(147,948		)	42,504		(1,202		)	8,934,823		(149,150		)
Municipal securities	702,379		(11,895		)	241,487		(6,254		)	943,866		(18,149		)
Asset-backed securities	177,834		(1,348		)	173,808		(20,250		)	351,642		(21,598		)
Corporate debt	595		(4		)	200		—			795		(4		)
Other securities	790		(10		)	1,491		(9		)	2,281		(19		)
Total temporarily impaired securities	$	9,773,917	$	(161,205	)	$	459,490	$	(27,715	)	$	10,233,407	$	(188,920	)

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
December 31, 2016
Federal agencies:
Mortgage-backed securities	$	8,908,470	$	(189,318	)	$	41,706	$	(1,349	)	$	8,950,176	$	(190,667	)
Other agencies	924		(6		)	—		—			924		(6		)
Total Federal agency securities	8,909,394		(189,324		)	41,706		(1,349		)	8,951,100		(190,673		)
Municipal securities	1,412,152		(29,175		)	272,292		(9,627		)	1,684,444		(38,802		)
Asset-backed securities	361,185		(3,043		)	178,924		(29,092		)	540,109		(32,135		)
Corporate debt	3,567		(15		)	200		—			3,767		(15		)
Other securities	790		(11		)	1,492		(8		)	2,282		(19		)
Total temporarily impaired securities	$	10,687,088	$	(221,568	)	$	494,614	$	(40,076	)	$	11,181,702	$	(261,644	)

At June 30, 2017, the carrying value of investment securities pledged to secure public and trust deposits, trading account liabilities, U.S. Treasury demand notes, and security repurchase agreements totaled $5.4 billion. There were no securities of a single issuer, which are not governmental or government-sponsored, that exceeded 10% of shareholders’ equity at June 30, 2017.

The following table is a summary of realized securities gains and losses for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Gross gains on sales of securities	$	3,814		$	3,391		$	4,359		$	3,391
Gross (losses) on sales of securities	(120		)	(2,659		)	(649		)	(2,659		)
Net gain on sales of securities	$	3,694		$	732		$	3,710		$	732
OTTI recognized in earnings	(3,559		)	(76		)	(3,583		)	(76		)
Net security gains (losses)	$	135		$	656		$	127		$	656

Security Impairment

Huntington evaluates the available-for-sale securities portfolio on a quarterly basis for impairment and conducts a comprehensive security-level assessment on all available-for-sale securities. Impairment exists when the present value of the expected cash flows are not sufficient to recover the entire amortized cost basis at the balance sheet date. Under these circumstances, any credit impairment would be recognized in earnings. At the end of the 2017 second quarter, Huntington changed its intent from able and willing to hold to sell sometime in the near future prior to final maturity for the two Reg

62

Diversified CDO securities. Related to this change in intent, Huntington estimated the fair value of these bonds by obtaining bids. As a result of this analysis, Huntington recognized $3.6 million of OTTI on these two securities. For all other securities, Huntington does not intend to sell, nor does it believe it will be required to sell these securities until the amortized cost is recovered, which may be maturity.

The highest risk segment in our investment portfolio is the trust preferred CDO securities which are in the asset-backed securities portfolio. This portfolio is in run off, and the Company has not purchased these types of securities since 2005. The fair values of the CDO assets have been impacted by various market conditions. The unrealized losses are primarily the result of wider liquidity spreads on asset-backed securities and the longer expected average lives of the trust-preferred CDO securities, due to changes in the expectations of when the underlying securities will be repaid.

Collateralized Debt Obligations are backed by a pool of debt securities issued by financial institutions. The collateral generally consists of trust-preferred securities and subordinated debt securities issued by banks, bank holding companies, and insurance companies. Many collateral issuers have the option of deferring interest payments on their debt for up to five years. A full cash flow analysis is used to estimate fair values and assess impairment for each security within this portfolio. A third party pricing specialist with direct industry experience in pooled-trust-preferred security evaluations is engaged to provide assistance estimating the fair value and expected cash flows on this portfolio. The full cash flow analysis is completed by evaluating the relevant credit and structural aspects of each pooled-trust-preferred security in the portfolio, including collateral performance projections for each piece of collateral in the security and terms of the security’s structure. The credit review includes an analysis of profitability, credit quality, operating efficiency, leverage, and liquidity using available financial and regulatory information for each underlying collateral issuer. The analysis also includes a review of historical industry default data, current / near-term operating conditions, and the impact of macroeconomic and regulatory changes.  Using the results of the analysis, the Company estimates appropriate default and recovery probabilities for each piece of collateral then estimates the expected cash flows for each security. The fair value of each security is obtained by discounting the expected cash flows at a market discount rate. The market discount rate is determined by reference to yields observed in the market for similarly rated collateralized debt obligations, specifically high-yield collateralized loan obligations. The relatively high market discount rate is reflective of the uncertainty of the cash flows and illiquid nature of these securities. The large differential between the fair value and amortized cost of some of the securities reflects the high market discount rate and the expectation that the majority of the cash flows will not be received until near the final maturity of the security (the final maturities range from 2032 to 2035).

The following table summarizes the relevant characteristics of the Company's CDO securities portfolio, which are included in asset-backed securities, at June 30, 2017. Each security is part of a pool of issuers and supports a more senior tranche of securities except for the MM Comm III securities which are the most senior class.

Collateralized Debt Obligation Securities

(dollar amounts in thousands)

Deal Name	Par Value		Amortized Cost		Fair Value		Unrealized Loss (2)			Lowest Credit Rating (3)	# of Issuers Currently Performing/ Remaining (4)	Actual Deferrals and Defaults as a % of Original Collateral	Expected Defaults as a % of Remaining Performing Collateral	Excess Subordination (5)
MM Comm III	4,509		4,308		3,581		(727		)	BB+	5/8	5	5	39
Pre TSL IX (1)	5,000		3,955		3,275		(680		)	C	27/37	16	8	11
Pre TSL XI (1)	25,000		19,239		15,867		(3,372		)	C	42/51	14	8	14
Reg Diversified	25,500		510		510		—			D	21/36	32	8	—
Tropic III	31,000		31,000		19,342		(11,658		)	BB	27/36	16	7	41
Total at June 30, 2017	$	91,009	$	59,012	$	42,575	$	(16,437	)
Total at December 31, 2016	$	137,197	$	101,210	$	76,003	$	(25,207	)

(1) Security was determined to have OTTI. As such, the amortized cost is net of recorded credit impairment.

(2) The majority of securities have been in a continuous loss position for 12 months or longer.

(3) For purposes of comparability, the lowest credit rating expressed is equivalent to Fitch ratings even where the lowest rating is based on another nationally recognized credit rating agency.

(4) Includes both banks and/or insurance companies.

(5) Excess subordination percentage represents the additional defaults in excess of both current and projected defaults that the CDO can absorb before the bond experiences credit impairment. Excess subordinated percentage is calculated by (a) determining what percentage of defaults a deal can experience before the bond has credit impairment, and (b) subtracting from this default breakage percentage both total current and expected future default percentages.

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For the three-month and six-month periods ended June 30, 2017 and 2016, the following table summarizes by security type the total OTTI losses recognized in the Unaudited Condensed Consolidated Statements of Income for securities evaluated for impairment as described above.

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Available-for-sale and other securities:
Collateralized Debt Obligations	$	3,559	$	—	$	3,559	$	—
Municipal Securities	—		76		24		76
Total available-for-sale and other securities	$	3,559	$	76	$	3,583	$	76

The following table presents the OTTI recognized in earnings on debt securities held by Huntington for the three-month and six-month periods ended June 30, 2017 and 2016 as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016			2017			2016
Balance, beginning of period	$	7,262	$	18,368		$	11,796		$	18,368
Reductions from sales	—		(8,613		)	(4,558		)	(8,613		)
Additional credit losses	3,559		76			3,583			76
Balance, end of period	$	10,821	$	9,831		$	10,821		$	9,831

5. HELD-TO-MATURITY SECURITIES

These are debt securities that Huntington has the intent and ability to hold until maturity. The debt securities are carried at amortized cost and adjusted for amortization of premiums and accretion of discounts using the interest method.

During the 2017 second quarter, Huntington transferred $1.0 billion of mortgage-backed and other agency securities from the available-for-sale securities portfolio to the held-to-maturity securities portfolio. The securities were reclassified at fair value at the date of transfer. At the time of the transfer, $13.5 million of unrealized net losses were recognized in OCI. The amounts in OCI will be recognized in earnings over the remaining life of the securities as an offset to the adjustment of yield in a manner consistent with the amortization of the premium on the same transferred securities, resulting in an immaterial impact on net income.

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Listed below are the contractual maturities of held-to-maturity securities at June 30, 2017 and December 31, 2016:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Federal agencies: mortgage-backed securities:
1 year or less	$	—	$	—	$	—	$	—
After 1 year through 5 years	—		—		—		—
After 5 years through 10 years	70,527		70,355		41,261		40,791
After 10 years	7,634,775		7,616,513		7,157,083		7,139,943
Total Federal agencies: mortgage-backed securities	7,705,302		7,686,868		7,198,344		7,180,734
Other agencies:
1 year or less	—		—		—		—
After 1 year through 5 years	—		—		—		—
After 5 years through 10 years	376,837		376,750		398,341		399,452
After 10 years	191,592		190,149		204,083		201,180
Total other agencies	568,429		566,899		602,424		600,632
Total U.S. Government backed agencies	8,273,731		8,253,767		7,800,768		7,781,366
Municipal securities:
1 year or less	—		—		—		—
After 1 year through 5 years	—		—		—		—
After 5 years through 10 years	—		—		—		—
After 10 years	5,846		5,635		6,171		5,902
Total municipal securities	5,846		5,635		6,171		5,902
Total held-to-maturity securities	$	8,279,577	$	8,259,402	$	7,806,939	$	7,787,268

The following table provides amortized cost, gross unrealized gains and losses, and fair value by investment category at June 30, 2017 and December 31, 2016:

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
June 30, 2017
Federal agencies:
Mortgage-backed securities	$	7,705,302	$	17,950	$	(36,384	)	$	7,686,868
Other agencies	568,429		1,374		(2,904		)	566,899
Total U.S. Government backed agencies	8,273,731		19,324		(39,288		)	8,253,767
Municipal securities	5,846		—		(211		)	5,635
Total held-to-maturity securities	$	8,279,577	$	19,324	$	(39,499	)	$	8,259,402

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
December 31, 2016
Federal agencies:
Mortgage-backed securities	$	7,198,344	$	20,883	$	(38,493	)	$	7,180,734
Other agencies	602,424		1,690		(3,482		)	600,632
Total U.S. Government backed agencies	7,800,768		22,573		(41,975		)	7,781,366
Municipal securities	6,171		—		(269		)	5,902
Total held-to-maturity securities	$	7,806,939	$	22,573	$	(42,244	)	$	7,787,268

The following tables provide detail on held-to-maturity securities with unrealized gross losses aggregated by investment category and the length of time the individual securities have been in a continuous loss position, at June 30, 2017 and December 31, 2016:

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	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
June 30, 2017
Federal agencies:
Mortgage-backed securities	$	4,606,283	$	(31,348	)	$	160,437	$	(5,036	)	$	4,766,720	$	(36,384	)
Other agencies	375,023		(2,904		)	—		—			375,023		(2,904		)
Total U.S. Government backed securities	4,981,306		(34,252		)	160,437		(5,036		)	5,141,743		(39,288		)
Municipal securities	5,635		(211		)	—		—			5,635		(211		)
Total temporarily impaired securities	$	4,986,941	$	(34,463	)	$	160,437	$	(5,036	)	$	5,147,378	$	(39,499	)

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
December 31, 2016
Federal agencies:
Mortgage-backed securities	$	2,855,360	$	(31,470	)	$	186,226	$	(7,023	)	$	3,041,586	$	(38,493	)
Other agencies	413,207		(3,482		)	—		—			413,207		(3,482		)
Total U.S. Government backed securities	3,268,567		(34,952		)	186,226		(7,023		)	3,454,793		(41,975		)
Municipal securities	5,902		(269		)	—		—			5,902		(269		)
Total temporarily impaired securities	$	3,274,469	$	(35,221	)	$	186,226	$	(7,023	)	$	3,460,695	$	(42,244	)

Security Impairment

Huntington evaluates the held-to-maturity securities portfolio on a quarterly basis for impairment. Impairment exists when the present value of the expected cash flows is not sufficient to recover the entire amortized cost basis at the balance sheet date. Under these circumstances, any impairment would be recognized in earnings. As of June 30, 2017, Management has evaluated held-to-maturity securities with unrealized losses for impairment and concluded no OTTI is required.

6. LOAN SALES AND SECURITIZATIONS

Residential Mortgage Loans

The following table summarizes activity relating to residential mortgage loans sold with servicing retained for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Residential mortgage loans sold with servicing retained	$	798,399	$	715,589	$	1,645,752	$	1,348,055
Pretax gains resulting from above loan sales (1)	16,943		18,618		39,133		32,731

(1) Recorded in mortgage banking income.

A MSR is established only when the servicing is contractually separated from the underlying mortgage loans by sale or securitization of the loans with servicing rights retained. At initial recognition, the MSR asset is established at its fair value using assumptions consistent with assumptions used to estimate the fair value of existing MSRs. Subsequent to the initial recognition, MSRs may be measured using either the fair value method or the amortization method. The election of the fair value method or amortization method is made at the time each servicing class is established. Subsequently, servicing rights are accounted for based on the methodology chosen for each respective servicing class. Any increase or decrease in the fair value of MSRs carried under the fair value method, as well as amortization or impairment of MSRs recorded using the amortization

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method, during the period is recorded as an increase or decrease in mortgage banking income, which is reflected in noninterest income in the Unaudited Condensed Consolidated Statements of Income.

The following tables summarize the changes in MSRs recorded using either the fair value method or the amortization method for the three-month and six-month periods ended June 30, 2017 and 2016:

Fair Value Method:	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Fair value, beginning of period	$	13,307		$	14,819		$	13,747		$	17,585
Change in fair value during the period due to:
Time decay (1)	(217		)	(245		)	(448		)	(518		)
Payoffs (2)	(217		)	(465		)	(581		)	(969		)
Changes in valuation inputs or assumptions (3)	(345		)	(1,004		)	(190		)	(2,993		)
Fair value, end of period:	$	12,528		$	13,105		$	12,528		$	13,105
Weighted-average life (years)	5.7			5.1			5.7			5.1

(1) Represents decrease in value due to passage of time, including the impact from both regularly scheduled loan principal payments and partial loan paydowns.

(2) Represents decrease in value associated with loans that paid off during the period.

(3) Represents change in value resulting primarily from market-driven changes in interest rates and prepayment speeds.

Amortization Method:	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Carrying value, beginning of period	$	177,812		$	127,275		$	172,466		$	143,133
New servicing assets created	8,218			7,277			17,853			13,386
Impairment (charge) / recovery	(2,806		)	(7,295		)	(1,007		)	(23,635		)
Amortization and other	(6,733		)	(5,965		)	(12,821		)	(11,592		)
Carrying value, end of period	$	176,491		$	121,292		$	176,491		$	121,292
Fair value, end of period	$	177,138		$	121,464		$	177,138		$	121,464
Weighted-average life (years)	7.1			6.1			7.1			6.1

MSRs do not trade in an active, open market with readily observable prices. While sales of MSRs occur, the precise terms and conditions are typically not readily available. Therefore, the fair value of MSRs is estimated using a discounted future cash flow model. The model considers portfolio characteristics, contractually specified servicing fees and assumptions related to prepayments, delinquency rates, late charges, other ancillary revenues, costs to service, and other economic factors. Changes in the assumptions used may have a significant impact on the valuation of MSRs.

MSR values are sensitive to movements in interest rates as expected future net servicing income depends on the projected outstanding principal balances of the underlying loans, which can be greatly impacted by the level of prepayments. Huntington hedges the value of certain MSRs against changes in value attributable to changes in interest rates using a combination of derivative instruments and trading securities.

For MSRs under the fair value method, a summary of key assumptions and the sensitivity of the MSR value at June 30, 2017 and December 31, 2016, to changes in these assumptions follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	11.40	%	$	(476	)	$	(919	)	10.90	%	$	(501	)	$	(970	)
Spread over forward interest rate swap rates	876 bps		(463		)	(874		)	536 bps		(454		)	(879		)

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For MSRs under the amortization method, a summary of key assumptions and the sensitivity of the MSR value at June 30, 2017 and December 31, 2016, to changes in these assumptions follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	8.20	%	$	(4,731	)	$	(9,191	)	7.80	%	$	(4,510	)	$	(8,763	)
Spread over forward interest rate swap rates	1,084 bps		(6,566		)	(12,374		)	1,173 bps		(5,259		)	(10,195		)

Total servicing, late and other ancillary fees included in mortgage banking income amounted to $14 million and $12 million for the three-month periods ended June 30, 2017 and 2016, respectively. For the six-month periods ended June 30, 2017 and 2016, total net servicing fees included in mortgage banking income were $28 million and $24 million, respectively. The unpaid principal balance of residential mortgage loans serviced for third parties was $19.1 billion and $18.9 billion at June 30, 2017 and December 31, 2016, respectively.

Automobile Loans

Huntington has retained servicing responsibilities on sold automobile loans and receives annual servicing fees and other ancillary fees on the outstanding loan balances. Automobile loan servicing rights are accounted for using the amortization method. A servicing asset is established at fair value at the time of the sale. The servicing asset is then amortized against servicing income. Impairment, if any, is recognized when carrying value exceeds the fair value as determined by calculating the present value of expected net future cash flows. The primary risk characteristic for measuring servicing assets is payoff rates of the underlying loan pools. Valuation calculations rely on the predicted payoff assumption and, if actual payoff is quicker than expected, then future value would be impaired.

Changes in the carrying value of automobile loan servicing rights for the three-month and six-month periods ended June 30, 2017 and 2016, and the fair value at the end of each period were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Carrying value, beginning of period	$	15,159		$	7,029		$	18,285		$	8,771
Amortization and other	(2,635		)	(1,571		)	(5,761		)	(3,313		)
Carrying value, end of period	$	12,524		$	5,458		$	12,524		$	5,458
Fair value, end of period	$	12,571		$	5,551		$	12,571		$	5,551
Weighted-average contractual life (years)	3.8			3.0			3.8			3.0

A summary of key assumptions and the sensitivity of the automobile loan servicing rights value to changes in these assumptions at June 30, 2017 and December 31, 2016 follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	19.91	%	$	(688	)	$	(1,391	)	19.98	%	$	(1,047	)	$	(2,026	)
Spread over forward interest rate swap rates	500 bps		(17		)	(34		)	500 bps		(26		)	(53		)

Servicing income amounted to $5 million and $2 million for the three-month periods ending June 30, 2017, and 2016, respectively. For the six-month periods ended June 30, 2017 and 2016, total servicing income was $10 million and $5 million, respectively. The unpaid principal balance of automobile loans serviced for third parties was $1.3 billion and $1.7 billion at June 30, 2017 and December 31, 2016, respectively.

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Small Business Administration (SBA) Portfolio

The following table summarizes activity relating to SBA loans sold with servicing retained for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
SBA loans sold with servicing retained	$	87,705	$	58,629	$	165,377	$	104,518
Pretax gains resulting from above loan sales (1)	7,109		4,662		12,927		8,183

(1) Recorded in gain on sale of loans.

Huntington has retained servicing responsibilities on sold SBA loans and receives annual servicing fees on the outstanding loan balances. SBA loan servicing rights are accounted for using the amortization method. A servicing asset is established at fair value at the time of the sale using a discounted future cash flow model. The servicing asset is then amortized against servicing income. Impairment, if any, is recognized when carrying value exceeds the fair value as determined by calculating the present value of expected net future cash flows.

The following tables summarize the changes in the carrying value of the servicing asset for the three-month and six-month periods ended June 30, 2017 and 2016, and the fair value at the end of each period were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Carrying value, beginning of period	$	21,399		$	19,526		$	21,080		$	19,747
New servicing assets created	4,121			1,868			5,596			3,380
Amortization and other	(2,407		)	(1,782		)	(3,563		)	(3,515		)
Carrying value, end of period	$	23,113		$	19,612		$	23,113		$	19,612
Fair value, end of period	$	26,853		$	23,823		$	26,853		$	23,823
Weighted-average life (years)	3.3			3.3			3.3			3.3

A summary of key assumptions and the sensitivity of the SBA loan servicing rights value to changes in these assumptions at June 30, 2017 and December 31, 2016 follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	7.50	%	$	(363	)	$	(721	)	7.40	%	$	(324	)	$	(644	)
Discount rate	15.00		(721		)	(1,411		)	15.00		(1,270		)	(1,870		)

Servicing income amounted to $3 million and $2 million for the three-month periods ending June 30, 2017, and 2016, respectively. For the six-month periods ended June 30, 2017 and 2016, total servicing income was $5 million and $5 million, respectively. The unpaid principal balance of SBA loans serviced for third parties was $1.2 billion and $1.1 billion at June 30, 2017 and December 31, 2016, respectively.

7. LONG-TERM DEBT

In March 2017, the Bank issued $0.7 billion of senior notes at 99.994% of face value. The senior notes mature on March 10, 2020 and have a fixed coupon rate of 2.375%. The senior notes may be redeemed one month prior to the maturity date at 100% of principal plus accrued and unpaid interest. Also, in March 2017, the Bank issued $0.3 billion of senior notes at 100% of face value. The senior notes mature on March 10, 2020 and have a variable coupon rate of three month LIBOR + 51 basis points.

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8. OTHER COMPREHENSIVE INCOME

The components of other comprehensive income for the three-month and six-month periods ended June 30, 2017 and 2016, were as follows:

	Three Months Ended June 30, 2017
	Tax (Expense)
(dollar amounts in thousands)	Pretax		Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	2,478	$	(876	)	$	1,602
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	53,285		(18,811		)	34,474
Less: Reclassification adjustment for net losses (gains) included in net income	3,988		(1,410		)	2,578
Net change in unrealized holding gains (losses) on available-for-sale debt securities	59,751		(21,097		)	38,654
Net change in unrealized holding gains (losses) on available-for-sale equity securities	—		—			—
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	1,220		(427		)	793
Less: Reclassification adjustment for net (gains) losses included in net income	427		(150		)	277
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	1,647		(577		)	1,070
Net change in pension and other post-retirement obligations	1,198		(419		)	779
Total other comprehensive income (loss)	$	62,596	$	(22,093	)	$	40,503

	Three Months Ended June 30, 2016
	Tax (Expense)
(dollar amounts in thousands)	Pretax			Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	1,032		$	(365	)	$	667
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	50,278			(18,234		)	32,044
Less: Reclassification adjustment for net losses (gains) included in net income	(2,294		)	811			(1,483		)
Net change in unrealized holding gains (losses) on available-for-sale debt securities	49,016			(17,788		)	31,228
Net change in unrealized holding gains (losses) on available-for-sale equity securities	66			(24		)	42
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	1,989			(696		)	1,293
Less: Reclassification adjustment for net (gains) losses included in net income	(248		)	89			(159		)
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	1,741			(607		)	1,134
Net change in pension and other post-retirement obligations	1,293			(453		)	840
Total other comprehensive income (loss)	$	52,116		$	(18,872	)	$	33,244

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	Six Months Ended June 30, 2017
	Tax (expense)
(dollar amounts in thousands)	Pretax			Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	3,288		$	(1,162	)	$	2,126
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	62,282			(21,607		)	40,675
Less: Reclassification adjustment for net losses (gains) included in net income	9,862			(3,487		)	6,375
Net change in unrealized holding gains (losses) on available-for-sale debt securities	75,432			(26,256		)	49,176
Net change in unrealized holding gains (losses) on available-for-sale equity securities	—			—			—
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	(611		)	214			(397		)
Less: Reclassification adjustment for net (gains) losses included in net income	987			(346		)	641
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	376			(132		)	244
Net change in pension and other post-retirement obligations	1,906			(667		)	1,239
Total other comprehensive income (loss)	$	77,714		$	(27,055	)	$	50,659

	Six Months Ended June 30, 2016
	Tax (expense)
(dollar amounts in thousands)	Pretax			Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	(2,602	)	$	920		$	(1,682	)
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	130,746			(46,919		)	83,827
Less: Reclassification adjustment for net losses (gains) included in net income	(2,758		)	975			(1,783		)
Net change in unrealized holding gains (losses) on available-for-sale debt securities	125,386			(45,024		)	80,362
Net change in unrealized holding gains (losses) on available-for-sale equity securities	170			(60		)	110
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	16,218			(5,676		)	10,542
Less: Reclassification adjustment for net (gains) losses included in net income	(892		)	313			(579		)
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	15,326			(5,363		)	9,963
Net change in pension and other post-retirement obligations	2,586			(905		)	1,681
Total other comprehensive income (loss)	$	143,468		$	(51,352	)	$	92,116

71

The following table presents activity in accumulated other comprehensive income (loss), net of tax, for the six-month periods ended June 30, 2017 and 2016:

(dollar amounts in thousands)	Unrealized gains and (losses) on debt securities (1)			Unrealized gains and (losses) on equity securities		Unrealized gains and (losses) on cash flow hedging derivatives			Unrealized gains (losses) for pension and other post- retirement obligations			Total
December 31, 2015	$	8,361		$	176	$	(3,948	)	$	(230,747	)	$	(226,158	)
Other comprehensive income before reclassifications	82,145			110		10,542			—			92,797
Amounts reclassified from accumulated OCI to earnings	(1,783		)	—		(579		)	1,681			(681		)
Period change	80,362			110		9,963			1,681			92,116
June 30, 2016	$	88,723		$	286	$	6,015		$	(229,066	)	$	(134,042	)
December 31, 2016	$	(192,764	)	$	287	$	(2,634	)	$	(205,905	)	$	(401,016	)
Other comprehensive income before reclassifications	42,801			—		(397		)	—			42,404
Amounts reclassified from accumulated OCI to earnings	6,375			—		641			1,239			8,255
Period change	49,176			—		244			1,239			50,659
June 30, 2017	$	(143,588	)	$	287	$	(2,390	)	$	(204,666	)	$	(350,357	)

(1) Amounts at June 30, 2017 and December 31, 2016 include $98 million and $82 million, respectively, of net unrealized gains on securities transferred from the available-for-sale securities portfolio to the held-to-maturity securities portfolio. The net unrealized gains will be recognized in earnings over the remaining life of the security using the effective interest method.

72

The following table presents the reclassification adjustments out of accumulated OCI included in net income and the impacted line items as listed on the Unaudited Condensed Consolidated Statements of Income for the three-month and six-month periods ended June 30, 2017 and 2016:

	Reclassifications out of accumulated OCI
Accumulated OCI components	Amounts reclassified from accumulated OCI						Location of net gain (loss) reclassified from accumulated OCI into earnings
	Three Months Ended
(dollar amounts in thousands)	June 30, 2017			June 30, 2016
Gains (losses) on debt securities:
Amortization of unrealized gains (losses)	$	(2,284	)	$	740		Interest income - held-to-maturity securities - taxable
Realized gain (loss) on sale of securities	1,855			1,630			Noninterest income - net gains (losses) on sale of securities
OTTI recorded	(3,559		)	(76		)	Noninterest income - net gains (losses) on sale of securities
	(3,988		)	2,294			Total before tax
	1,410			(811		)	Tax (expense) benefit
	$	(2,578	)	$	1,483		Net of tax
Gains (losses) on cash flow hedging relationships:
Interest rate contracts	$	(427	)	$	248		Interest income - loans and leases
Interest rate contracts	—			—			Noninterest income - other income
	(427		)	248			Total before tax
	150			(89		)	Tax (expense) benefit
	$	(277	)	$	159		Net of tax
Amortization of defined benefit pension and post-retirement items:
Actuarial gains (losses)	$	(1,690	)	$	(1,785	)	Noninterest expense - personnel costs
Prior service credit	492			492			Noninterest expense - personnel costs
	(1,198		)	(1,293		)	Total before tax
	419			453			Tax (expense) benefit
	$	(779	)	$	(840	)	Net of tax

73

	Reclassifications out of accumulated OCI
Accumulated OCI components	Amounts reclassified from accumulated OCI						Location of net gain (loss) reclassified from accumulated OCI into earnings
	Six Months Ended
(dollar amounts in thousands)	June 30, 2017			June 30, 2016
Gains (losses) on debt securities:
Amortization of unrealized gains (losses)	$	(5,890	)	$	1,204		Interest income - held-to-maturity securities - taxable
Realized gain (loss) on sale of securities	(389		)	1,630			Noninterest income - net gains (losses) on sale of securities
OTTI recorded	(3,583		)	(76		)	Noninterest income - net gains (losses) on sale of securities
	(9,862		)	2,758			Total before tax
	3,487			(975		)	Tax (expense) benefit
	$	(6,375	)	$	1,783		Net of tax
Gains (losses) on cash flow hedging relationships:
Interest rate contracts	$	(987	)	$	893		Interest income - loans and leases
Interest rate contracts	—			(1		)	Noninterest income - other income
	(987		)	892			Total before tax
	346			(313		)	Tax (expense) benefit
	$	(641	)	$	579		Net of tax
Amortization of defined benefit pension and post-retirement items:
Actuarial gains (losses)	$	(2,890	)	$	(3,570	)	Noninterest expense - personnel costs
Prior service credit	984			984			Noninterest expense - personnel costs
	(1,906		)	(2,586		)	Total before tax
	667			905			Tax (expense) benefit
	$	(1,239	)	$	(1,681	)	Net of tax

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9. EARNINGS PER SHARE

Basic earnings per share is the amount of earnings (adjusted for dividends declared on preferred stock) available to each share of common stock outstanding during the reporting period. Diluted earnings per share is the amount of earnings available to each share of common stock outstanding during the reporting period adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental shares issued for stock options, restricted stock units and awards, distributions from deferred compensation plans, and the conversion of the Company’s convertible preferred stock. Potentially dilutive common shares are excluded from the computation of diluted earnings per share in periods in which the effect would be antidilutive. For diluted earnings per share, net income available to common shares can be affected by the conversion of the Company’s convertible preferred stock. Where the effect of this conversion would be dilutive, net income available to common shareholders is adjusted by the associated preferred dividends and deemed dividend. The calculation of basic and diluted earnings per share for the three and six-month periods ended June 30, 2017 and 2016, was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands, except per share amounts)	2017			2016			2017			2016
Basic earnings per common share:
Net income	$	271,741		$	174,540		$	479,835		$	345,854
Preferred stock dividends	(18,889		)	(19,874		)	(37,767		)	(27,872		)
Net income available to common shareholders	$	252,852		$	154,666		$	442,068		$	317,982
Average common shares issued and outstanding	1,088,934			798,167			1,087,654			796,961
Basic earnings per common share	$	0.23		$	0.19		$	0.41		$	0.40
Diluted earnings per common share:
Net income available to common shareholders	$	252,852		$	154,666		$	442,068		$	317,982
Effect of assumed preferred stock conversion	—			—			—			—
Net income applicable to diluted earnings per share	$	252,852		$	154,666		$	442,068		$	317,982
Average common shares issued and outstanding	1,088,934			798,167			1,087,654			796,961
Dilutive potential common shares:
Stock options and restricted stock units and awards	16,329			9,785			17,734			10,085
Shares held in deferred compensation plans	3,108			2,282			3,030			2,178
Other	156			137			154			136
Dilutive potential common shares:	19,593			12,204			20,918			12,399
Total diluted average common shares issued and outstanding	1,108,527			810,371			1,108,572			809,360
Diluted earnings per common share	$	0.23		$	0.19		$	0.40		$	0.39

For the three-month periods ended June 30, 2017 and 2016, approximately 2.6 million and 4.7 million, respectively, of options to purchase shares of common stock were not included in the computation of diluted earnings per share because the effect would be antidilutive. For the six-month periods ended June 30, 2017 and 2016, approximately 1.8 million and 4.0 million, respectively, were not included.

10. BENEFIT PLANS

Huntington sponsors a non-contributory defined benefit pension plan covering substantially all employees hired or rehired prior to January 1, 2010. The plan, which was modified in 2013 and no longer accrues service benefits to participants, provides benefits based upon length of service and compensation levels. The funding policy of Huntington is to contribute an annual amount that is at least equal to the minimum funding requirements but not more than the amount deductible under the Internal Revenue Code. There is no required minimum contribution for 2017.

In addition, Huntington has an unfunded defined benefit post-retirement plan that provides certain healthcare and life insurance benefits to retired employees who have attained the age of 55 and have at least 10 years of vesting service under this plan.

As part of the FirstMerit acquisition, Huntington agreed to assume and honor all FirstMerit benefit plans. The FirstMerit Pension Plan was frozen for nonvested employees and closed to new entrants after December 31, 2006. Effective December 31, 2012, the FirstMerit Pension Plan was frozen for vested employees. Additionally, FirstMerit had a post-retirement benefit plan which provided medical and life insurance for retired employees.

For additional information on benefit plans, see the Benefit Plan footnote in our 2016 Form 10-K.

The following table shows the components of net periodic (benefit) cost for all plans:

	Pension Benefits								Post-Retirement Benefits
	Three Months Ended June 30,								Three Months Ended June 30,
(dollar amounts in thousands)	2017					2016			2017					2016
Service cost	$	640				$	1,025		$	21				$	—
Interest cost	7,478					6,748			99					54
Expected return on plan assets	(13,803		)			(10,224		)	—					—
Amortization of prior service cost	—					—			(492		)			(492		)
Amortization of (gain) loss	1,747					1,865			(54		)			(72		)
Settlements	2,500					3,400			—					—
Net periodic (benefit) cost	$	(1,438	)	(1	)	$	2,814		$	(426	)	(1	)	$	(510	)

(1) Includes expense associated with FirstMerit plans.

	Pension Benefits								Post-Retirement Benefits
	Six Months Ended June 30,								Six Months Ended June 30,
(dollar amounts in thousands)	2017					2016			2017					2016
Service cost	$	1,280				$	2,050		$	43				$	—
Interest cost	14,955					13,496			198					109
Expected return on plan assets	(27,606		)			(20,447		)	—					—
Amortization of prior service cost	—					—			(984		)			(984		)
Amortization of (gain) loss	3,494					3,729			(109		)			(144		)
Settlements	5,000					6,800			—					—
Net periodic (benefit) cost	$	(2,877	)	(1	)	$	5,628		$	(852	)	(1	)	$	(1,019	)

(1) Includes expense associated with FirstMerit plans.

Huntington has a defined contribution plan that is available to eligible employees. Huntington matches participant contributions, up to the first 4% of base pay that is contributed to the defined contribution plan. For 2016, a discretionary profit-sharing contribution equal to 1% of eligible participants’ 2016 base pay was awarded during the 2017 first quarter. Huntington's expense related to the defined contribution plans during the second quarter 2017 and 2016 was $11 million and $8 million, respectively. For the six-month periods ended June 30, 2017 and 2016, expense related to the defined contribution plans were $22 million and $16 million, respectively.

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11. FAIR VALUES OF ASSETS AND LIABILITIES

See Note 18 “Fair Value of Assets and Liabilities” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of additional valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis. Assets and liabilities measured at fair value rarely transfer between Level 1 and Level 2 measurements. There were no such transfers during the three-month and six-month periods ended June 30, 2017 and 2016.

Assets and Liabilities measured at fair value on a recurring basis

Assets and liabilities measured at fair value on a recurring basis at June 30, 2017 and December 31, 2016 are summarized below:

	Fair Value Measurements at Reporting Date Using						Netting Adjustments (1)			June 30, 2017
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Assets
Loans held for sale	$	—	$	654,087	$	—	$	—		$	654,087
Loans held for investment	—		59,886		43,855		—			103,741
Trading account securities:
Federal agencies: Other agencies	—		6,868		—		—			6,868
Municipal securities	—		323		—		—			323
Other securities	86,560		1,016		—		—			87,576
	86,560		8,207		—		—			94,767
Available-for-sale and other securities:
U.S. Treasury securities	10,644		—		—		—			10,644
Federal agencies: Mortgage-backed	—		10,624,055		—		—			10,624,055
Federal agencies: Other agencies	—		100,291		—		—			100,291
Municipal securities	—		440,493		2,872,007		—			3,312,500
Asset-backed securities	—		552,224		42,575		—			594,799
Corporate debt	—		144,035		—		—			144,035
Other securities	12,485		4,026		—		—			16,511
	23,129		11,865,124		2,914,582		—			14,802,835
MSRs	—		—		12,528		—			12,528
Derivative assets	—		325,736		9,227		(144,951		)	190,012
Liabilities
Derivative liabilities	—		284,796		6,049		(212,487		)	78,358
Short-term borrowings	4,580		—		—		—			4,580

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	Fair Value Measurements at Reporting Date Using						Netting Adjustments (1)			December 31, 2016
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Assets
Loans held for sale	$	—	$	438,224	$	—	$	—		$	438,224
Loans held for investment	—		34,439		47,880		—			82,319
Trading account securities:
Municipal securities	—		1,148		—		—			1,148
Other securities	132,147		—		—		—			132,147
	132,147		1,148		—		—			133,295
Available-for-sale and other securities:
U.S. Treasury securities	5,497		—		—		—			5,497
Federal agencies: Mortgage-backed	—		10,673,342		—		—			10,673,342
Federal agencies: Other agencies	—		73,542		—		—			73,542
Municipal securities	—		452,013		2,798,044		—			3,250,057
Asset-backed securities	—		717,478		76,003		—			793,481
Corporate debt	—		198,683		—		—			198,683
Other securities	16,588		3,943		—		—			20,531
	22,085		12,119,001		2,874,047		—			15,015,133
MSRs	—		—		13,747		—			13,747
Derivative assets	—		414,412		5,747		(181,940		)	238,219
Liabilities
Derivative liabilities	—		362,777		7,870		(272,361		)	98,286
Short-term borrowings	474		—		—		—			474

(1) Amounts represent the impact of legally enforceable master netting agreements that allow the Company to settle positive and negative positions and cash collateral held or placed with the same counterparties.

The tables below present a rollforward of the balance sheet amounts for the three-month and six-month periods ended June 30, 2017 and 2016, for financial instruments measured on a recurring basis and classified as Level 3. The classification of an item as Level 3 is based on the significance of the unobservable inputs to the overall fair value measurement. However, Level 3 measurements may also include observable components of value that can be validated externally. Accordingly, the gains and losses in the table below include changes in fair value due in part to observable factors that are part of the valuation methodology.

77

	Level 3 Fair Value Measurements Three Months Ended June 30, 2017
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	13,307		$	2,694		$	2,867,652		$	59,492		$	44,219
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(2,124		)	—			—			—
Total gains/losses for the period:
Included in earnings	(779		)	2,608			(1,180		)	(3,557		)	1,493
Included in OCI	—			—			12,419			5,598			—
Purchases/originations	—			—			114,944			—			—
Sales	—			—			—			(18,594		)	—
Repayments	—			—			—			—			(1,857		)
Issues	—			—			—			—			—
Settlements	—			—			(121,828		)	(364		)	—
Closing balance	$	12,528		$	3,178		$	2,872,007		$	42,575		$	43,855
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(779	)	$	2,608		$	12,419		$	5,598		$	—

	Level 3 Fair Value Measurements Three Months Ended June 30, 2016
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	14,819		$	10,347		$	2,281,743		$	94,329		$	1,216
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(2,508		)	—			—			—
Total gains/losses for the period:
Included in earnings	(1,714		)	4,912			—			2			—
Included in OCI	—			—			7,486			5,842			—
Purchases/originations	—			—			46,457			—			—
Sales	—			—			(36,657		)	(27,794		)	—
Repayments	—			—			—			—			(291		)
Issues	—			—			—			—			—
Settlements	—			—			(61,054		)	(1,000		)	—
Closing balance	$	13,105		$	12,751		$	2,237,975		$	71,379		$	925
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(1,714	)	$	4,912		$	—		$	2		$	—

(1) Transfers out of Level 3 represent the settlement value of the derivative instruments (i.e. interest rate lock agreements) that were transferred to loans held for sale, which are classified as Level 2.

78

	Level 3 Fair Value Measurements Six Months Ended June 30, 2017
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	13,747		$	(2,123	)	$	2,798,044		$	76,003		$	47,880
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(2,457		)	—			—			—
Total gains/losses for the period:
Included in earnings	(1,219		)	7,758			(2,975		)	(3,528		)	1,430
Included in OCI	—			—			32,894			8,769			—
Purchases/originations	—			—			247,609			—			—
Sales	—			—			—			(37,728		)	—
Repayments	—			—			—			—			(5,455		)
Issues	—			—			—			—			—
Settlements	—			—			(203,565		)	(941		)	—
Closing balance	$	12,528		$	3,178		$	2,872,007		$	42,575		$	43,855
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(1,219	)	$	7,758		$	32,894		$	8,769		$	—

	Level 3 Fair Value Measurements Six Months Ended June 30, 2016
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	17,585		$	6,056		$	2,095,551		$	100,337		$	1,748
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(3,423		)	—			—			—
Total gains/losses for the period:
Included in earnings	(4,480		)	10,118			—			2			—
Included in OCI	—			—			19,326			674			—
Purchases/originations	—			—			283,907			—			—
Sales	—			—			(36,657		)	(27,794		)	—
Repayments	—			—			—			—			(823		)
Issues	—			—			—			—			—
Settlements	—			—			(124,152		)	(1,840		)	—
Closing balance	$	13,105		$	12,751		$	2,237,975		$	71,379		$	925
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(4,480	)	$	10,218		$	—		$	2		$	—

(1) Transfers out of Level 3 represent the settlement value of the derivative instruments (i.e. interest rate lock agreements) that were transferred to loans held for sale, which are classified as Level 2.

79

The tables below summarize the classification of gains and losses due to changes in fair value, recorded in earnings for Level 3 assets and liabilities for the three-month and six-month periods ended June 30, 2017 and 2016:

	Level 3 Fair Value Measurements Three Months Ended June 30, 2017
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities			Asset- backed securities			Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(779	)	$	2,608	$	—		$	—		$	—
Securities gains (losses)	—			—		(1,180		)	(3,557		)	—
Interest and fee income	—			—		—			—			—
Noninterest income	—			—		—			—			1,493
Other expense	—			—		—			—			—
Total	$	(779	)	$	2,608	$	(1,180	)	$	(3,557	)	$	1,493

	Level 3 Fair Value Measurements Three Months Ended June 30, 2016
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities		Asset- backed securities		Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(1,714	)	$	4,912	$	—	$	—	$	—
Securities gains (losses)	—			—		—		—		—
Interest and fee income	—			—		—		—		—
Noninterest income	—			—		—		2		—
Other expense	—			—		—		—		—
Total	$	(1,714	)	$	4,912	$	—	$	2	$	—

	Level 3 Fair Value Measurements Six Months Ended June 30, 2017
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities			Asset- backed securities			Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(1,219	)	$	7,758	$	—		$	—		$	—
Securities gains (losses)	—			—		(2,975		)	(3,528		)	—
Interest and fee income	—			—		—			—			—
Noninterest income	—			—		—			—			1,430
Other expense	—			—		—			—			—
Total	$	(1,219	)	$	7,758	$	(2,975	)	$	(3,528	)	$	1,430

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	Level 3 Fair Value Measurements Six Months Ended June 30, 2016
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities		Asset- backed securities		Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(4,480	)	$	10,118	$	—	$	—	$	—
Securities gains (losses)	—			—		—		—		—
Interest and fee income	—			—		—		—		—
Noninterest income	—			—		—		2		—
Other expense	—			—		—		—		—
Total	$	(4,480	)	$	10,118	$	—	$	2	$	—

Assets and liabilities under the fair value option

The following table presents the fair value and aggregate principal balance of certain assets and liabilities under the fair value option:

	June 30, 2017
	Total Loans							Loans that are 90 or more days past due
(dollar amounts in thousands)	Fair value carrying amount		Aggregate unpaid principal		Difference			Fair value carrying amount		Aggregate unpaid principal		Difference
Assets
Loans held for sale	$	654,087	$	628,684	$	25,403		$	72	$	72	$	—
Loans held for investment	103,741		113,114		(9,373		)	13,039		15,447		(2,408		)

	December 31, 2016
	Total Loans							Loans that are 90 or more days past due
(dollar amounts in thousands)	Fair value carrying amount		Aggregate unpaid principal		Difference			Fair value carrying amount		Aggregate unpaid principal		Difference
Assets
Loans held for sale	$	438,224	$	433,760	$	4,464		$	—	$	—	$	—
Loans held for investment	82,319		91,998		(9,679		)	8,408		11,082		(2,674		)

The following tables present the net gains (losses) from fair value changes for the three-month and six-month periods ended June 30, 2017 and 2016:

	Net gains (losses) from fair value changes				Net gains (losses) from fair value changes
	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Assets
Loans held for sale	$	4,551	$	8,870	$	13,616	$	13,519
Loans held for investment	1,493		—		1,430		—

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Assets and Liabilities measured at fair value on a nonrecurring basis

Certain assets and liabilities may be required to be measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition. These assets and liabilities are not measured at fair value on an ongoing basis; however, they are subject to fair value adjustments in certain circumstances, such as when there is evidence of impairment. For the six months ended June 30, 2017, assets measured at fair value on a nonrecurring basis were as follows:

			Fair Value Measurements Using
(dollar amounts in thousands)	Fair Value		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Total Gains/(Losses) Six Months Ended June 30, 2017
MSRs	$	175,454	$	—	$	—	$	175,454	$	(1,006	)
Impaired loans	36,118		—		—		36,118		(3,123		)
Other real estate owned	43,816		—		—		43,816		1,742

MSRs accounted for under the amortization method are subject to nonrecurring fair value measurement when the fair value is lower than the carrying amount.

Periodically, Huntington records nonrecurring adjustments of collateral-dependent loans measured for impairment when establishing the ACL. Such amounts are generally based on the fair value of the underlying collateral supporting the loan. Appraisals are generally obtained to support the fair value of the collateral and incorporate measures such as recent sales prices for comparable properties and cost of construction. In cases where the carrying value exceeds the fair value of the collateral less cost to sell, an impairment charge is recognized.

Other real estate owned properties are included in accrued income and other assets and valued based on appraisals and third party price opinions, less estimated selling costs.

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Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis

The table below presents quantitative information about the significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis at June 30, 2017 and December 31, 2016:

	Quantitative Information about Level 3 Fair Value Measurements at June 30, 2017
(dollar amounts in thousands)	Fair Value		Valuation Technique	Significant Unobservable Input	Range (Weighted Average)
Measured at fair value on a recurring basis:
MSRs	$	12,528	Discounted cash flow	Constant prepayment rate	8.0% - 31.0% (11%)
				Spread over forward interest rate swap rates	3.0% - 10.0% (8.8%)
Derivative assets	9,227		Consensus Pricing	Net market price	-9.2% - 31.7% (1.8%)
Derivative liabilities	6,049			Estimated Pull through %	9.0% - 99.0% (78.0%)
Municipal securities	2,872,007		Discounted cash flow	Discount rate	0.0% - 10.3% (3.9%)
				Cumulative default	0.0% - 38.4% (2.7%)
				Loss given default	5.0% - 80.0% (23.2%)
Asset-backed securities	42,575		Discounted cash flow	Discount rate	6.9% - 12.3% (7.0%)
				Cumulative prepayment rate	0.0% - 72% (8.2%)
				Cumulative default	0.7% - 100% (10.2%)
				Loss given default	85% - 100% (96.6%)
				Cure given deferral	0.0% - 75% (37.7%)
Loans held for investment	43,855		Discounted cash flow	Discount rate	7.0% - 17.6% (6.6%)
Measured at fair value on a nonrecurring basis:
MSRs	175,454		Discounted cash flow	Constant prepayment rate	7.0% - 21.0% (8%)
				Spread over forward interest rate swap rates	3.0% - 20.0% 10.8%)
Impaired loans	36,118		Appraisal value	NA	NA
Other real estate owned	43,816		Appraisal value	NA	NA

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	Quantitative Information about Level 3 Fair Value Measurements at December 31, 2016
(dollar amounts in thousands)	Fair Value		Valuation Technique	Significant Unobservable Input	Range (Weighted Average)
Measured at fair value on a recurring basis:
MSRs	$	13,747	Discounted cash flow	Constant prepayment rate	5.63% - 34.4% (10.9%)
				Spread over forward interest rate swap rates	3.0% - 9.2% (5.4%)
Derivative assets	5,747		Consensus Pricing	Net market price	-7.1% - 25.4% (1.1%)
Derivative liabilities	7,870			Estimated Pull through %	8.1% - 99.8% (76.9%)
Municipal securities	2,798,044		Discounted cash flow	Discount rate	0.0% - 10.0% (3.6%)
				Cumulative default	0.3% - 37.8% (4.0%)
				Loss given default	5.0% - 80.0% (24.1%)
Asset-backed securities	76,003		Discounted cash flow	Discount rate	5.0% - 12.0% (6.3%)
				Cumulative prepayment rate	0.0% - 73% (6.5%)
				Cumulative default	1.1% - 100% (11.2%)
				Loss given default	85% - 100% (96.3%)
				Cure given deferral	0.0% - 75.0% (36.2%)
Loans held for investment	47,880		Discounted cash flow	Constant prepayment rate	5.4% - 16.2% (5.6%)
Measured at fair value on a nonrecurring basis:
MSRs	171,309		Discounted cash flow	Constant prepayment rate	5.57% - 30.4% (7.8%)
				Spread over forward interest rate swap rates	4.2% - 20.0% (11.7%)
Impaired loans	53,818		Appraisal value	NA	NA
Other real estate owned	50,930		Appraisal value	NA	NA

The following provides a general description of the impact of a change in an unobservable input on the fair value measurement and the interrelationship between unobservable inputs, where relevant/significant. Interrelationships may also exist between observable and unobservable inputs. Such relationships have not been included in the discussion below.

A significant change in the unobservable inputs may result in a significant change in the ending fair value measurement of Level 3 instruments. In general, prepayment rates increase when market interest rates decline and decrease when market interest rates rise and higher prepayment rates generally result in lower fair values for MSR assets, Asset-backed securities, and Automobile loans.

Credit loss estimates, such as probability of default, constant default, cumulative default, loss given default, cure given deferral, and loss severity, are driven by the ability of the borrowers to pay their loans and the value of the underlying collateral and are impacted by changes in macroeconomic conditions, typically increasing when economic conditions worsen and decreasing when conditions improve. An increase in the estimated prepayment rate typically results in a decrease in estimated credit losses and vice versa. Higher credit loss estimates generally result in lower fair values. Credit spreads generally increase when liquidity risks and market volatility increase and decrease when liquidity conditions and market volatility improve.

Discount rates and spread over forward interest rate swap 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. Higher discount rates and credit spreads generally result in lower fair market values.

Net market price and pull through percentages generally increase when market interest rates increase and decline when market interest rates decline. Higher net market price and pull through percentages generally result in higher fair values.

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Fair values of financial instruments

The following table provides the carrying amounts and estimated fair values of Huntington’s financial instruments that are carried either at fair value or cost at June 30, 2017 and December 31, 2016:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial Assets
Cash and short-term assets	$	1,592,624	$	1,592,624	$	1,443,037	$	1,443,037
Trading account securities	94,767		94,767		133,295		133,295
Loans held for sale	748,077		752,800		512,951		515,640
Available-for-sale and other securities	15,388,306		15,388,306		15,562,837		15,562,837
Held-to-maturity securities	8,279,577		8,259,402		7,806,939		7,787,268
Net loans and direct financing leases	67,391,314		67,263,687		66,323,583		66,294,639
Derivatives	190,012		190,012		238,219		238,219
Financial Liabilities
Deposits	75,933,373		77,382,067		75,607,717		76,161,091
Short-term borrowings	4,552,877		4,552,877		3,692,654		3,692,654
Long-term debt	8,536,471		8,673,908		8,309,159		8,387,444
Derivatives	78,358		78,358		98,286		98,286

The following table presents the level in the fair value hierarchy for the estimated fair values of only Huntington’s financial instruments that are not already on the Unaudited Condensed Consolidated Balance Sheets at fair value at June 30, 2017 and December 31, 2016:

	Estimated Fair Value Measurements at Reporting Date Using						June 30, 2017
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Financial Assets
Held-to-maturity securities	$	—	$	8,259,402	$	—	$	8,259,402
Net loans and direct financing leases	—		—		67,263,687		67,263,687
Financial Liabilities
Deposits	—		73,621,776		3,760,291		77,382,067
Short-term borrowings	4,580		—		4,548,297		4,552,877
Long-term debt	—		8,278,588		395,320		8,673,908

	Estimated Fair Value Measurements at Reporting Date Using						December 31, 2016
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Financial Assets
Held-to-maturity securities	$	—	$	7,787,268	$	—	$	7,787,268
Net loans and direct financing leases	—		—		66,294,639		66,294,639
Financial Liabilities
Deposits	—		72,319,328		3,841,763		76,161,091
Short-term borrowings	474		—		3,692,180		3,692,654
Long-term debt	—		7,980,176		407,268		8,387,444

The short-term nature of certain assets and liabilities result in their carrying value approximating fair value. These include trading account securities, customers’ acceptance liabilities, short-term borrowings, bank acceptances outstanding, FHLB advances, and cash and short-term assets, which include cash and due from banks, interest-bearing deposits in banks, and federal funds sold and securities purchased under resale agreements. Loan commitments and letters-of-credit generally have short-term, variable-rate features and contain clauses that limit Huntington’s exposure to changes in customer credit quality.

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Accordingly, their carrying values, which are immaterial at the respective balance sheet dates, are reasonable estimates of fair value.

Certain assets, the most significant being operating lease assets, bank owned life insurance, and premises and equipment, do not meet the definition of a financial instrument and are excluded from this disclosure. Similarly, mortgage and nonmortgage servicing rights, deposit base, and other customer relationship intangibles are not considered financial instruments and are not included above. Accordingly, this fair value information is not intended to, and does not, represent Huntington’s underlying value. Many of the assets and liabilities subject to the disclosure requirements are not actively traded, requiring fair values to be estimated by Management. These estimations necessarily involve the use of judgment about a wide variety of factors, including but not limited to, relevancy of market prices of comparable instruments, expected future cash flows, and appropriate discount rates.

The following methods and assumptions were used by Huntington to estimate the fair value of the remaining classes of financial instruments:

Held-to-maturity securities

Fair values are determined by using models that are based on security-specific details, as well as relevant industry and economic factors. The most significant of these inputs are quoted market prices, and interest rate spreads on relevant benchmark securities.

Loans and Direct Financing Leases

Variable-rate loans that reprice frequently are based on carrying amounts, as adjusted for estimated credit losses. The fair values for other loans and leases are estimated using discounted cash flow analyses and employ interest rates currently being offered for loans and leases with similar terms. The rates take into account the position of the yield curve, as well as an adjustment for prepayment risk, operating costs, and profit. This value is also reduced by an estimate of expected losses and the credit risk associated in the loan and lease portfolio. The valuation of the loan portfolio reflected discounts that Huntington believed are consistent with transactions occurring in the marketplace.

Deposits

Demand deposits, savings accounts, and money market deposits are, by definition, equal to the amount payable on demand. The fair values of fixed-rate time deposits are estimated by discounting cash flows using interest rates currently being offered on certificates with similar maturities.

Debt

Long-term debt is based upon quoted market prices, which are inclusive of Huntington’s credit risk. In the absence of quoted market prices, discounted cash flows using market rates for similar debt with the same maturities are used in the determination of fair value.

12. DERIVATIVE FINANCIAL INSTRUMENTS

Derivative financial instruments are recorded in the Unaudited Condensed Consolidated Balance Sheets as either an asset or a liability (in accrued income and other assets or accrued expenses and other liabilities, respectively) and measured at fair value.

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The following table presents the fair values of all derivative instruments included in the Unaudited Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016. Amounts in the table below are presented gross without the impact of any net collateral arrangements:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Asset		Liability		Asset		Liability
Derivatives designated as Hedging Instruments
Interest rate contracts	$	40,416	$	90,326	$	46,440	$	99,996
Derivatives not designated as Hedging Instruments
Interest rate contracts	192,000		114,889		213,587		143,976
Foreign exchange contracts	27,655		27,883		23,265		19,576
Commodities contracts	53,295		49,520		108,026		104,328
Equity contracts	10,728		5,694		9,775		—
Total Contracts	$	324,094	$	288,312	$	401,093	$	367,876

Derivatives used in Asset and Liability Management Activities

Huntington engages in balance sheet hedging activity, principally for asset and liability management purposes, to convert fixed rate assets or liabilities into floating rate or vice versa. Balance sheet hedging activity is arranged to receive hedge accounting treatment and is classified as either fair value or cash flow hedges. Fair value hedges are purchased to convert deposits and subordinated and other long-term debt from fixed-rate obligations to floating rate. Cash flow hedges are also used to convert floating rate loans made to customers into fixed rate loans.

The following table presents the gross notional values of derivatives used in Huntington’s asset and liability management activities at June 30, 2017, identified by the underlying interest rate-sensitive instruments:

(dollar amounts in thousands)	Fair Value Hedges		Cash Flow Hedges		Total
Instruments associated with:
Loans	$	—	$	1,925,000	$	1,925,000
Deposits	—		—		—
Subordinated notes	950,000		—		950,000
Long-term debt	6,725,000		—		6,725,000
Total notional value at June 30, 2017	$	7,675,000	$	1,925,000	$	9,600,000

The following table presents additional information about the interest rate swaps used in Huntington’s asset and liability management activities at June 30, 2017:

							Weighted-Average Rate
(dollar amounts in thousands)	Notional Value		Average Maturity (years)	Fair Value			Receive		Pay
Asset conversion swaps
Receive fixed—generic	$	1,925,000	0.3	$	(3,420	)	1.07	%	1.44	%
Liability conversion swaps
Receive fixed—generic	7,675,000		2.8	(46,490		)	1.54		1.19
Total swap portfolio at June 30, 2017	$	9,600,000	2.3	$	(49,910	)	1.44	%	1.24	%

These derivative financial instruments were entered into for the purpose of managing the interest rate risk of assets and liabilities. Consequently, net amounts receivable or payable on contracts hedging either interest earning assets or interest bearing liabilities were accrued as an adjustment to either interest income or interest expense. The net amounts resulted in an increase to net interest income of $6 million and $19 million for the three-month periods ended June 30, 2017, and 2016, respectively. For the six-month periods ended June 30, 2017, and 2016, the net amounts resulted in an increase to net interest income of $16 million and $40 million, respectively.

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Fair Value Hedges

The changes in fair value of the fair value hedges are, to the extent that the hedging relationship is effective, recorded through earnings and offset against changes in the fair value of the hedged item.

The following table presents the change in fair value for derivatives designated as fair value hedges as well as the offsetting change in fair value on the hedged item for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Interest rate contracts
Change in fair value of interest rate swaps hedging deposits (1)	$	—		$	—		$	(76	)	$	(82	)
Change in fair value of hedged deposits (1)	—			—			—			72
Change in fair value of interest rate swaps hedging subordinated notes (2)	2,277			4			(2,431		)	6,809
Change in fair value of hedged subordinated notes (2)	(2,235		)	(4		)	3,168			(6,809		)
Change in fair value of interest rate swaps hedging other long-term debt (2)	15,832			22,017			5,551			83,049
Change in fair value of hedged other long-term debt (2)	(16,913		)	(21,047		)	(8,378		)	(80,834		)

(1) Effective portion of the hedging relationship is recognized in Interest expense—deposits in the Unaudited Condensed Consolidated Statements of Income. Any resulting ineffective portion of the hedging relationship is recognized in noninterest income in the Unaudited Condensed Consolidated Statements of Income.

(2) Effective portion of the hedging relationship is recognized in Interest expense—subordinated notes and other long-term debt in the Unaudited Condensed Consolidated Statements of Income. Any resulting ineffective portion of the hedging relationship is recognized in noninterest income in the Unaudited Condensed Consolidated Statements of Income.

Cash Flow Hedges

To the extent these derivatives designated as cash flow hedges are effective in offsetting the variability of the hedged cash flows, changes in the derivatives’ fair value will not be included in current earnings but are reported as a component of OCI in the Unaudited Condensed Consolidated Statements of Changes in Shareholders’ Equity. These changes in fair value will be included in earnings of future periods when earnings are also affected by the changes in the hedged cash flows. To the extent these derivatives are not effective, changes in their fair values are immediately included in noninterest income.

The following table presents the gains and (losses) recognized in OCI and the location in the Unaudited Condensed Consolidated Statements of Income of gains and (losses) reclassified from OCI into earnings for derivatives designated as effective cash flow hedges for the three-month and six-month periods ended June 30, 2017 and 2016:

Derivatives in cash flow hedging relationships	Amount of gain or (loss) recognized in OCI on derivatives (effective portion) (after-tax)				Location of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	Amount of (gain) or loss reclassified from accumulated OCI into earnings (effective portion)
	Three Months Ended June 30,					Three Months Ended June 30,
(dollar amounts in thousands)	2017		2016			2017		2016
Interest rate contracts
Loans	$	793	$	1,293	Interest and fee income - loans and leases	$	427	$	(248	)
Investment Securities	—		—		Noninterest income - other income	—		—
Total	$	793	$	1,293		$	427	$	(248	)

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Derivatives in cash flow hedging relationships	Amount of gain or (loss) recognized in OCI on derivatives (effective portion) (after-tax)					Location of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	Amount of (gain) or loss reclassified from accumulated OCI into earnings (effective portion)
	Six Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017		2016
Interest rate contracts
Loans	$	(397	)	$	10,542	Interest and fee income - loans and leases	$	987	$	(893	)
Investment Securities	—			—		Noninterest income - other income	—		1
	$	(397	)	$	10,542		$	987	$	(892	)

Gains and losses on swaps related to loans and investment securities and swaps related to subordinated debt are recorded within interest income and interest expense, respectively. During the next twelve months, Huntington expects to reclassify to earnings approximately $(2) million after-tax of unrealized gains (losses) on cash flow hedging derivatives currently in OCI.

The following table presents the gains and (losses) recognized in noninterest income for the ineffective portion of interest rate contracts for derivatives designated as cash flow hedges for the three and six-month periods ended June 30, 2017 and 2016:

Derivatives in cash flow hedging relationships	Three Months Ended June 30,					Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016		2017			2016
Interest rate contracts
Loans	$	(31	)	$	421	$	(134	)	$	377

Derivatives used in mortgage banking activities

Mortgage loan origination hedging activity

Huntington’s mortgage origination hedging activity is related to the hedging of the mortgage pricing commitments to customers and the secondary sale to third parties. The value of a newly originated mortgage is not firm until the interest rate is committed or locked. The interest rate lock commitments are derivative positions offset by forward commitments to sell loans.

Huntington uses two types of mortgage-backed securities in its forward commitments to sell loans. The first type of forward commitment is a “To Be Announced” (or TBA), the second is a “Specified Pool” mortgage-backed security. Huntington uses these derivatives to hedge the value of mortgage-backed securities until they are sold.

The following table summarizes the derivative assets and liabilities used in mortgage banking activities:

Derivatives used in mortgage banking activities	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Asset		Liability		Asset		Liability
Interest rate lock agreements	$	9,227	$	355	$	5,747	$	1,598
Forward trades and options	1,642		2,178		13,319		1,173
Total derivatives used in mortgage banking activities	$	10,869	$	2,533	$	19,066	$	2,771

MSR hedging activity

Huntington’s MSR economic hedging activity uses securities and derivatives to manage the value of the MSR asset and to mitigate the various types of risk inherent in the MSR asset, including risks related to duration, basis, convexity, volatility, and yield curve. The hedging instruments include forward commitments, interest rate swaps, and options on interest rate swaps.

The total notional value of these derivative financial instruments at June 30, 2017 and December 31, 2016, was $228 million and $300 million, respectively. The total notional amount at June 30, 2017, corresponds to trading assets with a fair value of $1 million and trading liabilities with a fair value of $2 million. Net trading gains and (losses) related to MSR hedging for the three-month periods ended June 30, 2017 and 2016, were $2 million and $6 million and $1 million and $18 million for the six-month periods ended June 30, 2017 and 2016, respectively. These amounts are included in mortgage banking income in the Unaudited Condensed Consolidated Statements of Income.

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Derivatives used in customer related activities

Various derivative financial instruments are offered to enable customers to meet their financing and investing objectives and for their risk management purposes. Derivative financial instruments used in trading activities consisted of commodity, interest rate, and foreign exchange contracts. Huntington may enter into offsetting third-party contracts with approved, reputable counterparties with substantially matching terms and currencies in order to economically hedge significant exposure related to derivatives used in trading activities.

The interest rate risk of customer derivatives is mitigated by entering into similar derivatives having offsetting terms with other counterparties. The credit risk to these customers is evaluated and included in the calculation of fair value. Foreign currency derivatives help the customer hedge risk and reduce exposure to fluctuations in exchange rates. Transactions are primarily in liquid currencies with Canadian dollars and Euros comprising a majority of all transactions. Commodity derivatives help the customer hedge risk and reduce exposure to fluctuations in the price of various commodities. Hedging of energy related products and base metals comprise the majority of all transactions.

The net fair values of these derivative financial instruments, for which the gross amounts are included in accrued income and other assets or accrued expenses and other liabilities at both June 30, 2017 and December 31, 2016, were $80 million and $80 million, respectively. The total notional values of derivative financial instruments used by Huntington on behalf of customers, including offsetting derivatives, were $20.6 billion and $20.6 billion at both June 30, 2017 and December 31, 2016, respectively. Huntington’s credit risk from interest rate swaps used for trading purposes was $156 million and $196 million at the same dates, respectively.

Share Swap Economic Hedge

Huntington acquires and holds shares of Huntington common stock in a Rabbi Trust for the Executive Deferred Compensation Plan. Huntington common stock held in the Rabbi Trust is recorded at cost and the corresponding deferred compensation liability is recorded at fair value using Huntington's share price as a significant input.

During the second quarter of 2016, Huntington entered into an economic hedge with a $20 million notional amount to hedge deferred compensation expense related to the Executive Deferred Compensation Plan. During the second quarter of 2017, Huntington entered into another economic hedge with a notional value of $8 million for a total notional amount of $28 million to hedge deferred compensation expense related to the Executive Deferred Compensation Plan. The economic hedge is recorded at fair value within other assets or liabilities. Changes in the fair value are recorded directly through other noninterest expense in the Unaudited Condensed Consolidated Statements of Income. At June 30, 2017, the fair value of the share swap was $11 million.

Visa Related Swap

In connection with the sale of Huntington’s Class B Visa^® shares, Huntington entered into a swap agreement with the purchaser of the shares. The swap agreement adjusts for dilution in the conversion ratio of Class B shares resulting from the Visa^® litigation. In connection with the FirstMerit acquisition, Huntington acquired an additional Visa^® related swap agreement. At June 30, 2017, the combined fair value of the swap liabilities of $6 million is an estimate of the exposure liability based upon Huntington’s assessment of the potential Visa^® litigation losses and timing of litigation settlement.

Financial assets and liabilities that are offset in the Unaudited Condensed Consolidated Balance Sheets

Huntington records derivatives at fair value as further described in Note 11.

Derivative balances are presented on a net basis taking into consideration the effects of legally enforceable master netting agreements. Additionally, collateral exchanged with counterparties is also netted against the applicable derivative fair values. Huntington enters into derivative transactions with two primary groups: broker-dealers and banks, and Huntington’s customers. Different methods are utilized for managing counterparty credit exposure and credit risk for each of these groups.

Huntington enters into transactions with broker-dealers and banks for various risk management purposes. These types of transactions generally are high dollar volume. Huntington enters into bilateral collateral and master netting agreements with these counterparties, and routinely exchanges cash and high quality securities collateral. Huntington enters into transactions with customers to meet their financing, investing, payment and risk management needs. These types of transactions generally are low dollar volume. Huntington generally enters into master netting agreements with customer counterparties, however collateral is generally not exchanged.

At June 30, 2017 and December 31, 2016, aggregate credit risk associated with these derivatives, net of collateral that has been pledged by the counterparty, was $44 million and $26 million, respectively. The credit risk associated with interest rate swaps is calculated after considering master netting agreements with broker-dealers and banks.

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At June 30, 2017, Huntington pledged $120 million of investment securities and cash collateral to counterparties, while other counterparties pledged $53 million of investment securities and cash collateral to Huntington to satisfy collateral netting agreements. In the event of credit downgrades, Huntington would not be required to provide additional collateral.

The following tables present the gross amounts of these assets and liabilities with any offsets to arrive at the net amounts recognized in the Unaudited Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016:

Offsetting of Financial Liabilities and Derivative Assets
				Gross amounts offset in the condensed consolidated balance sheets			Net amounts of assets presented in the condensed consolidated balance sheets		Gross amounts not offset in the condensed consolidated balance sheets
(dollar amounts in thousands)		Gross amounts of recognized assets							Financial instruments			Cash collateral received			Net amount
June 30, 2017	Derivatives	$	334,963	$	(144,951	)	$	190,012	$	(5,009	)	$	(18,448	)	$	166,555
December 31, 2016	Derivatives	420,159		(181,940		)	238,219		(34,328		)	(5,428		)	198,463

Offsetting of Financial Liabilities and Derivative Liabilities
				Gross amounts offset in the condensed consolidated balance sheets			Net amounts of liabilities presented in the condensed consolidated balance sheets		Gross amounts not offset in the condensed consolidated balance sheets
(dollar amounts in thousands)		Gross amounts of recognized liabilities							Financial instruments			Cash collateral delivered			Net amount
June 30, 2017	Derivatives	$	290,845	$	(212,487	)	$	78,358	$	—		$	(24,348	)	$	54,010
December 31, 2016	Derivatives	370,647		(272,361		)	98,286		(7,550		)	(23,943		)	66,793

13. VIEs

Consolidated VIEs

Consolidated VIEs at June 30, 2017, consisted of certain loan and lease securitization trusts. Huntington has determined the trusts are VIEs. Huntington has concluded that it is the primary beneficiary of these trusts because it has the power to direct the activities of the entity that most significantly affect the entity’s economic performance and it has either the obligation to absorb losses of the entity that could potentially be significant to the VIE or the right to receive benefits from the entity that could potentially be significant to the VIE.

The following tables present the carrying amount and classification of the consolidated trusts’ assets and liabilities that were included in the Unaudited Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016:

	June 30, 2017
	Huntington Technology Funding Trust		Other Consolidated VIEs		Total
(dollar amounts in thousands)	Series 2014A
Assets:
Cash	$	1,566	$	—	$	1,566
Net loans and leases	43,039		—		43,039
Accrued income and other assets	—		271		271
Total assets	$	44,605	$	271	$	44,876
Liabilities:
Other long-term debt	$	36,040	$	—	$	36,040
Accrued interest and other liabilities	—		271		271
Total liabilities	36,040		271		36,311
Equity:
Beneficial Interest owned by third party	8,565		—		8,565
Total liabilities and equity	$	44,605	$	271	$	44,876

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	December 31, 2016
	Huntington Technology Funding Trust		Other Consolidated VIEs		Total
(dollar amounts in thousands)	Series 2014A
Assets:
Cash	$	1,564	$	—	$	1,564
Net loans and leases	69,825		—		69,825
Accrued income and other assets	—		281		281
Total assets	$	71,389	$	281	$	71,670
Liabilities:
Other long-term debt	$	57,494	$	—	$	57,494
Accrued interest and other liabilities	—		281		281
Total liabilities	57,494		281		57,775
Equity:
Beneficial Interest owned by third party	13,895		—		13,895
Total liabilities and equity	$	71,389	$	281	$	71,670

The loans and leases were designated to repay the securitized notes. Huntington services the loans and leases and uses the proceeds from principal and interest payments to pay the securitized notes during the amortization period. Huntington has not provided financial or other support that was not previously contractually required.

Unconsolidated VIEs

The following tables provide a summary of the assets and liabilities included in Huntington’s Unaudited Condensed Consolidated Financial Statements, as well as the maximum exposure to losses, associated with its interests related to unconsolidated VIEs for which Huntington holds an interest, but is not the primary beneficiary, to the VIE at June 30, 2017, and December 31, 2016:

	June 30, 2017
(dollar amounts in thousands)	Total Assets		Total Liabilities		Maximum Exposure to Loss
2016-1 Automobile Trust	$	10,464	$	—	$	10,464
2015-1 Automobile Trust	2,046		—		2,046
Trust Preferred Securities	13,919		252,568		—
Low Income Housing Tax Credit Partnerships	615,691		327,793		615,691
Other Investments	110,318		55,026		110,318
Total	$	752,438	$	635,387	$	738,519

	December 31, 2016
(dollar amounts in thousands)	Total Assets		Total Liabilities		Maximum Exposure to Loss
2016-1 Automobile Trust	$	14,770	$	—	$	14,770
2015-1 Automobile Trust	2,227		—		2,227
Trust Preferred Securities	13,919		252,552		—
Low Income Housing Tax Credit Partnerships	576,880		292,721		576,880
Other Investments	79,195		42,316		79,195
Total	$	686,991	$	587,589	$	673,072

The following table provides a summary of automobile transfers to trusts in separate securitization transactions.

(dollar amounts in millions)	Year	Amount Transferred
2016-1 Automobile Trust	2016	$	1,500
2015-1 Automobile Trust	2015	750

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The securitizations and the resulting sale of all underlying securities qualified for sale accounting. Huntington has concluded that it is not the primary beneficiary of these trusts because it has neither the obligation to absorb losses of the entities that could potentially be significant to the VIEs nor the right to receive benefits from the entities that could potentially be significant to the VIEs. Huntington is not required and does not currently intend to provide any additional financial support to the trusts. Investors and creditors only have recourse to the assets held by the trusts. The interest Huntington holds in the VIEs relates to servicing rights which are included within servicing rights of Huntington’s Unaudited Consolidated Balance Sheets. The maximum exposure to loss is equal to the carrying value of the servicing asset. See Note 6 for more information.

Trust Preferred Securities

Huntington has certain wholly-owned trusts whose assets, liabilities, equity, income, and expenses are not included within Huntington’s Unaudited Condensed Consolidated Financial Statements. These trusts have been formed for the sole purpose of issuing trust-preferred securities, from which the proceeds are then invested in Huntington junior subordinated debentures, which are reflected in Huntington’s Unaudited Condensed Consolidated Balance Sheets as subordinated notes. The trust securities are the obligations of the trusts, and as such, are not consolidated within Huntington’s Unaudited Condensed Consolidated Financial Statements. A list of trust preferred securities outstanding at June 30, 2017 follows:

(dollar amounts in thousands)	Rate			Principal amount of subordinated note/ debenture issued to trust (1)		Investment in unconsolidated subsidiary
Huntington Capital I	1.87	%	(2)	$	69,730	$	6,186
Huntington Capital II	1.87		(3)	32,093		3,093
Sky Financial Capital Trust III	2.70		(4)	72,165		2,165
Sky Financial Capital Trust IV	2.55		(4)	74,320		2,320
Camco Financial Trust	3.69		(5)	4,260		155
Total				$	252,568	$	13,919

(1) Represents the principal amount of debentures issued to each trust, including unamortized original issue discount.

(2) Variable effective rate at June 30, 2017, based on three-month LIBOR +0.70%.

(3) Variable effective rate at June 30, 2017, based on three-month LIBOR +0.625%.

(4) Variable effective rate at June 30, 2017, based on three-month LIBOR +1.40%.

(5) Variable effective rate at June 30, 2017, based on three-month LIBOR +1.33%.

Each issue of the junior subordinated debentures has an interest rate equal to the corresponding trust securities distribution rate. Huntington has the right to defer payment of interest on the debentures at any time, or from time-to-time for a period not exceeding five years provided that no extension period may extend beyond the stated maturity of the related debentures. During any such extension period, distributions to the trust securities will also be deferred and Huntington’s ability to pay dividends on its common stock will be restricted. Periodic cash payments and payments upon liquidation or redemption with respect to trust securities are guaranteed by Huntington to the extent of funds held by the trusts. The guarantee ranks subordinate and junior in right of payment to all indebtedness of the Company to the same extent as the junior subordinated debt. The guarantee does not place a limitation on the amount of additional indebtedness that may be incurred by Huntington.

Low Income Housing Tax Credit Partnerships

Huntington makes certain equity investments in various limited partnerships that sponsor affordable housing projects utilizing the Low Income Housing Tax Credit (LIHTC) pursuant to Section 42 of the Internal Revenue Code. The purpose of these investments is to achieve a satisfactory return on capital, to facilitate the sale of additional affordable housing product offerings, and to assist in achieving goals associated with the Community Reinvestment Act. The primary activities of the limited partnerships include the identification, development, and operation of multi family housing that is leased to qualifying residential tenants. Generally, these types of investments are funded through a combination of debt and equity.

Huntington uses the proportional amortization method to account for all qualified investments in these entities. These investments are included in accrued income and other assets. Investments that do not meet the requirements of the proportional amortization method are recognized using the equity method. Investment gains/losses related to these investments are included in noninterest-income in the Unaudited Condensed Consolidated Statements of Income.

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The following table presents the balances of Huntington’s affordable housing tax credit investments and related unfunded commitments at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	June 30, 2017			December 31, 2016
Affordable housing tax credit investments	$	942,769		$	877,237
Less: amortization	(327,078		)	(300,357		)
Net affordable housing tax credit investments	$	615,691		$	576,880
Unfunded commitments	$	327,793		$	292,721

The following table presents other information relating to Huntington’s affordable housing tax credit investments for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Tax credits and other tax benefits recognized	$	22,671	$	18,150	$	45,955	$	36,434
Proportional amortization method
Tax credit amortization expense included in provision for income taxes	17,220		12,499		34,182		24,905
Equity method
Tax credit investment (gains) losses included in non-interest income	—		132		109		264

Huntington recognized immaterial impairment losses on tax credit investments during the three-month and six-month periods ended June 30, 2017 and 2016. The impairment losses recognized related to the fair value of the tax credit investments that were less than carrying value.

Other Investments

Other investments determined to be VIE’s include investments in New Market Tax Credit Investments, Historic Tax Credit Investments, Small Business Investment Companies, Rural Business Investment Companies, certain equity method investments and other miscellaneous investments.

14. COMMITMENTS AND CONTINGENT LIABILITIES

Commitments to extend credit

In the ordinary course of business, Huntington makes various commitments to extend credit that are not reflected in the Unaudited Condensed Consolidated Financial Statements. The contract amounts of these financial agreements at June 30, 2017 and December 31, 2016, were as follows:

(dollar amounts in thousands)	June 30, 2017		December 31, 2016
Contract amount represents credit risk:
Commitments to extend credit
Commercial	$	15,684,661	$	15,190,056
Consumer	12,727,316		12,235,943
Commercial real estate	1,474,831		1,697,671
Standby letters-of-credit	559,903		637,182
Commercial letters-of-credit	11,952		4,610

Commitments to extend credit generally have fixed expiration dates, are variable-rate, and contain clauses that permit Huntington to terminate or otherwise renegotiate the contracts in the event of a significant deterioration in the customer’s credit quality. These arrangements normally require the 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. The interest rate risk arising from these financial instruments is insignificant as a result of their predominantly short-term, variable-rate nature.

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Standby letters-of-credit are conditional commitments issued to guarantee the performance of a customer to a third party. These guarantees are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing, and similar transactions. Most of these arrangements mature within two years. The carrying amount of deferred revenue associated with these guarantees was $8 million and $8 million at June 30, 2017 and December 31, 2016, respectively.

Commercial letters-of-credit represent short-term, self-liquidating instruments that facilitate customer trade transactions and generally have maturities of no longer than 90 days. The goods or cargo being traded normally secures these instruments.

Commitments to sell loans

Activity related to our mortgage origination activity supports the hedging of the mortgage pricing commitments to customers and the secondary sale to third parties. At June 30, 2017 and December 31, 2016, Huntington had commitments to sell residential real estate loans of $1.1 billion and $0.8 billion, respectively. These contracts mature in less than one year.

Litigation

The nature of Huntington’s business ordinarily results in a certain amount of pending as well as threatened claims, litigation, investigations, regulatory and legal and administrative cases, matters and proceedings, all of which are considered incidental to the normal conduct of business. When the Company determines it has meritorious defenses to the claims asserted, it vigorously defends itself. The Company considers settlement of cases when, in Management’s judgment, it is in the best interests of both the Company and its shareholders to do so.

On at least a quarterly basis, Huntington assesses its liabilities and contingencies in connection with threatened and outstanding legal cases, matters and proceedings, utilizing the latest information available. For cases, matters and proceedings where it is both probable the Company will incur a loss and the amount can be reasonably estimated, Huntington establishes an accrual for the loss. Once established, the accrual is adjusted as appropriate to reflect any relevant developments. For cases, matters or proceedings where a loss is not probable or the amount of the loss cannot be estimated, no accrual is established.

In certain cases, matters and proceedings, exposure to loss exists in excess of the accrual to the extent such loss is reasonably possible, but not probable. Management believes an estimate of the aggregate range of reasonably possible losses, in excess of amounts accrued, for current legal proceedings is up to $70 million at June 30, 2017. For certain other cases, and matters, Management cannot reasonably estimate the possible loss at this time. Any estimate involves significant judgment, given the varying stages of the proceedings (including the fact that many of them are currently in preliminary stages), the existence of multiple defendants in several of the current proceedings whose share of liability has yet to be determined, the numerous unresolved issues in many of the proceedings, and the inherent uncertainty of the various potential outcomes of such proceedings. Accordingly, Management’s estimate will change from time-to-time, and actual losses may be more or less than the current estimate. $0

While the final outcome of legal cases, matters, and proceedings is inherently uncertain, based on information currently available, advice of counsel, and available insurance coverage, Management believes that the amount it has already accrued is adequate and any incremental liability arising from the Company’s legal cases, matters, or proceedings will not have a material negative adverse effect on the Company’s consolidated financial position as a whole. However, in the event of unexpected future developments, it is possible that the ultimate resolution of these cases, matters, and proceedings, if unfavorable, may be material to the Company’s consolidated financial position in a particular period.

Meoli v. The Huntington National Bank (Cyberco Litigation). The Bank has been named a defendant in a lawsuit arising from the Banks’s commercial lending, depository, and equipment leasing relationships with Cyberco Holdings, Inc. (Cyberco), based in Grand Rapids, Michigan. In November 2004, an equipment leasing fraud was uncovered, whereby Cyberco sought financing from equipment lessors and financial institutions, including Huntington, allegedly to purchase computer equipment from Teleservices Group, Inc. (Teleservices). Cyberco created fraudulent documentation to close the financing transactions when, in fact, no computer equipment was ever purchased or leased from Teleservices, which later proved to be a shell corporation. Bankruptcy proceedings for both Cyberco and Teleservices later ensued.

On September 28, 2015, adopting the bankruptcy court's recommendation, the U.S. District Court for the Western District of Michigan entered a judgment against Huntington in the amount of $72 million plus costs and pre- and post-judgment interest. Huntington increased its legal reserve by approximately $38 million to fully accrue for the amount of the judgment in the third quarter of 2015 while appealing the decision to the U.S. Sixth Circuit Court of Appeals. On February 8, 2017, the appellate court reversed the district court decision in part and remanded the case to the district court for further proceedings. Consistent with its reading of the appellate court opinion, Huntington decreased its legal reserve by approximately $42 million in the fourth quarter of 2016.

Powell v. Huntington National Bank.  Huntington is a defendant in a class action filed on October 15, 2013 alleging Huntington charged late fees on mortgage loans in a method that violated West Virginia law and the loan documents. Plaintiffs

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seek statutory civil penalties, compensatory damages and attorney’s fees. Huntington filed a motion for summary judgment on the plaintiffs’ claims, which was granted by the U.S. District Court on December 28, 2016.  Plaintiffs have filed a notice of appeal to the U.S. Fourth Circuit Court of Appeals and the appeal has been briefed. Oral arguments are scheduled for October 2017.

FirstMerit Overdraft Litigation. Commencing in December 2010, two separate lawsuits were filed in the Summit County Court of Common Pleas and the Lake County Court of Common Pleas against FirstMerit. The complaints were brought as class actions on behalf of Ohio residents who maintained a checking account at FirstMerit and who incurred one or more overdraft fees as a result of the alleged re-sequencing of debit transactions. The parties have reached a global settlement for approximately $9 million cash to a common fund plus an additional $7 million in debt forgiveness. Attorneys' fees will be paid from the fund, with any remaining funds going to charity. FirstMerit’s insurer has reimbursed Huntington 49% of the approximately $9 million, which totals approximately $4.4 million. The court preliminarily approved the settlement on December 5, 2016 and the cash portion of the settlement was funded on December 12, 2016. The settlement received final approval on June 2, 2017 and there has been no appeal, so the settlement is final. The settlement administrator is in the process of assessing claims and it is anticipated claims will be paid from the settlement fund in the third quarter of 2017.

15. SEGMENT REPORTING

Our business segments are based on our internally-aligned segment leadership structure, which is how we monitor results and assess performance. We have four major business segments: Consumer and Business Banking, Commercial Banking, Commercial Real Estate and Vehicle Finance(CREVF), Regional Banking and The Huntington Private Client Group, and (RBHPCG). The Treasury / Other function includes our technology and operations, other unallocated assets, liabilities, revenue, and expense.

Business segment results are determined based upon our management reporting system, which assigns balance sheet and income statement items to each of the business segments. The process is designed around our organizational and management structure and, accordingly, the results derived are not necessarily comparable with similar information published by other financial institutions. Additionally, because of the interrelationships of the various segments, the information presented is not indicative of how the segments would perform if they operated as independent entities.

Revenue is recorded in the business segment responsible for the related product or service. Fee sharing is recorded to allocate portions of such revenue to other business segments involved in selling to, or providing service to customers. Results of operations for the business segments reflect these fee sharing allocations.

The management accounting process that develops the business segment reporting utilizes various estimates and allocation methodologies to measure the performance of the business segments. Expenses are allocated to business segments using a two-phase approach. The first phase consists of measuring and assigning unit costs (activity-based costs) to activities related to product origination and servicing. These activity-based costs are then extended, based on volumes, with the resulting amount allocated to business segments that own the related products. The second phase consists of the allocation of overhead costs to all four business segments from Treasury / Other. We utilize a full-allocation methodology, where all Treasury / Other expenses, except reported Significant Items, and a small amount of other residual unallocated expenses, are allocated to the four business segments.

The management accounting policies and processes utilized in compiling segment financial information are highly subjective and, unlike financial accounting, are not based on authoritative guidance similar to GAAP. As a result, reported segment results are not necessarily comparable with similar information reported by other financial institutions. Furthermore, changes in management structure or allocation methodologies and procedures result in changes in reported segment
financial data. Accordingly, certain amounts have been reclassified to conform to the current period presentation.

We use an active and centralized Funds Transfer Pricing (FTP) methodology to attribute appropriate income to the business segments. The intent of the FTP methodology is to transfer interest rate risk from the business segments by providing matched duration funding of assets and liabilities. The result is to centralize the financial impact, management, and reporting of interest rate risk in the Treasury / Other function where it can be centrally monitored and managed. The Treasury / Other function charges (credits) an internal cost of funds for assets held in (or pays for funding provided by) each business segment. The FTP rate is based on prevailing market interest rates for comparable duration assets (or liabilities).

We announced a change within our executive leadership team, which became effective during the 2017 second quarter. As a result, the previously reported Home Lending segment is now included as an operating unit in the Consumer and Business Banking segment. Additionally, the Insurance operating unit previously included in Commercial Banking was realigned to RBHPCG during the quarter. Prior period results have been reclassified to conform to the current period presentation.

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Consumer and Business Banking - The Consumer and Business Banking segment, including Home Lending, provides a wide array of financial products and services to consumer and small business customers including but not limited to checking accounts, savings accounts, money market accounts, certificates of deposit, mortgage loans, consumer loans, credit cards, and small business loans and investment products. Other financial services available to consumer and small business customers include mortgages, insurance, interest rate risk protection, foreign exchange, and treasury management. Business Banking is defined as serving companies with revenues up to $20 million and consists of approximately 254,000 businesses. Home Lending supports origination and servicing of consumer loans and mortgages for customers who are generally located in our primary banking markets across all segments.

Commercial Banking - Through a relationship banking model, this segment provides a wide array of products and services to the middle market, large corporate, and government public sector customers located primarily within our geographic footprint. The segment is divided into six business units: middle market, large corporate, specialty banking, asset finance, capital markets and treasury management.

Commercial Real Estate and Vehicle Finance - This segment provides lending and other banking products and services to customers outside of our traditional retail and commercial banking segments. Our products and services include providing financing for the purchase of automobiles, light-duty trucks, recreational vehicles and marine craft at franchised dealerships, financing the acquisition of new and used vehicle inventory of franchised automotive dealerships, and financing for land, buildings, and other commercial real estate owned or constructed by real estate developers, automobile dealerships, or other customers with real estate project financing needs. Products and services are delivered through highly specialized relationship-focused bankers and product partners.

Regional Banking and The Huntington Private Client Group - The core business of The Huntington Private Client Group is The Huntington Private Bank, which consists of Private Banking, Wealth & Investment Management, and Retirement plan services. The Huntington Private Bank provides high net-worth customers with deposit, lending (including specialized lending options), and banking services. The Huntington Private Bank delivers wealth management and legacy planning through investment and portfolio management, fiduciary administration, and trust services. This group also provides retirement plan services to corporate businesses. The Huntington Private Client Group provides corporate trust services and institutional and mutual fund custody services and insurance services.

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Listed below is certain operating basis financial information reconciled to Huntington’s June 30, 2017, December 31, 2016, and June 30, 2016, reported results by business segment:

	Three Months Ended June 30,
Income Statements	Consumer & Business Banking		Commercial Banking			CREVF		RBHPCG			Treasury / Other			Huntington Consolidated
(dollar amounts in thousands)
2017
Net interest income	$	420,210	$	168,814		$	140,367	$	48,749		$	(33,628	)	$	744,512
Provision for (reduction in allowance) credit losses	17,000		(10,339		)	20,793		(2,477		)	1			24,978
Noninterest income	184,199		59,926			12,559		46,385			22,149			325,218
Noninterest expense	412,400		101,184			55,946		60,885			63,949			694,364
Income taxes	61,253		48,263			26,665		12,854			(70,388		)	78,647
Net income	$	113,756	$	89,632		$	49,522	$	23,872		$	(5,041	)	$	271,741
2016
Net interest income	$	284,896	$	106,971		$	95,617	$	35,499		$	(17,102	)	$	505,881
Provision for (reduction in allowance) credit losses	20,848		(5,630		)	9,740		(448		)	(1		)	24,509
Noninterest income	152,242		51,158			10,640		40,097			16,975			271,112
Noninterest expense	310,924		80,842			41,185		53,757			36,953			523,661
Income taxes	36,879		29,021			19,366		7,801			(38,784		)	54,283
Net income	$	68,487	$	53,896		$	35,966	$	14,486		$	1,705		$	174,540

	Six Months Ended June 30,
Income Statements	Consumer & Business Banking		Commercial Banking		CREVF			RBHPCG			Treasury / Other			Huntington Consolidated
(dollar amounts in thousands)
2017
Net interest income	$	828,936	$	343,285	$	279,700		$	95,492		$	(72,926	)	$	1,474,487
Provision for credit losses	50,181		11,798		30,342			295			—			92,616
Noninterest income	354,970		117,573		23,768			94,395			46,975			637,681
Noninterest expense	824,048		201,382		108,635			123,934			143,787			1,401,786
Income taxes	108,387		86,687		57,572			22,980			(137,695		)	137,931
Net income	$	201,290	$	160,991	$	106,919		$	42,678		$	(32,043	)	$	479,835
2016
Net interest income	$	562,423	$	212,240	$	191,214		$	70,503		$	(27,433	)	$	1,008,947
Provision for (reduction in allowance) credit losses	30,750		29,423		(6,909		)	(1,173		)	—			52,091
Noninterest income	284,002		95,484		17,950			79,403			36,140			512,979
Noninterest expense	616,981		159,050		80,922			109,172			48,616			1,014,741
Income taxes	69,543		41,738		47,303			14,667			(64,011		)	109,240
Net income	$	129,151	$	77,513	$	87,848		$	27,240		$	24,102		$	345,854

	Assets at				Deposits at
(dollar amounts in thousands)	June 30, 2017		December 31, 2016		June 30, 2017		December 31, 2016
Consumer & Business Banking	$	25,820,232	$	25,332,635	$	45,971,574	$	45,355,745
Commercial Banking	24,021,962		24,121,689		17,867,356		18,053,208
CREVF	24,431,788		23,576,832		1,943,670		1,893,072
RBHPCG	5,570,436		5,327,622		5,882,745		6,214,250
Treasury / Other	21,562,361		21,355,319		4,268,028		4,091,442
Total	$	101,406,779	$	99,714,097	$	75,933,373	$	75,607,717

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Item 3: Quantitative and Qualitative Disclosures about Market Risk

Quantitative and qualitative disclosures for the current period can be found in the Market Risk section of this report, which includes changes in market risk exposures from disclosures presented in Huntington’s 2016 Form 10-K.

Item 4: Controls and Procedures

Disclosure Controls and Procedures

Huntington maintains disclosure controls and procedures designed to ensure that the information required to be disclosed in the reports that it files or submits under the Securities Exchange Act of 1934, as amended, are recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by an issuer in the reports that it files or submits under the Exchange Act is accumulated and communicated to the issuer’s management, including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. Huntington’s Management, with the participation of its Chief Executive Officer and the Chief Financial Officer, evaluated the effectiveness of Huntington’s disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this report. Based upon such evaluation, Huntington’s Chief Executive Officer and Chief Financial Officer have concluded that, as of the end of such period, Huntington’s disclosure controls and procedures were effective.

There have not been any changes in Huntington’s internal controls over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the fiscal quarter to which this report relates that have materially affected, or are reasonably likely to materially affect, Huntington’s internal controls over financial reporting.

100

PART II. OTHER INFORMATION

In accordance with the instructions to Part II, the other specified items in this part have been omitted because they are not applicable or the information has been previously reported.

Item 1: Legal Proceedings

Information required by this item is set forth in Note 14 of the Notes to Unaudited Condensed Consolidated Financial Statements included in Item 1 of this report and incorporated herein by reference.

Item 1A: Risk Factors

Information required by this item is set forth in Part 1 Item 2- Management’s Discussion and Analysis of Financial Condition and Results of Operations of this report and incorporated herein by reference.

101

Item 6. Exhibits

Exhibit Index

This report incorporates by reference the documents listed below that we have previously filed with the SEC. The SEC allows us to incorporate by reference information in this document. The information incorporated by reference is considered to be a part of this document, except for any information that is superseded by information that is included directly in this document.

This information may be read and copied at the Public Reference Room of the SEC at 100 F Street, N.E., Washington, D.C. 20549. The SEC also maintains an Internet web site that contains reports, proxy statements, and other information about issuers, like us, who file electronically with the SEC. The address of the site is http://www.sec.gov. The reports and other information filed by us with the SEC are also available at our Internet web site. The address of the site is http://www.huntington.com. Except as specifically incorporated by reference into this Quarterly Report on Form 10-Q, information on those web sites is not part of this report. You also should be able to inspect reports, proxy statements, and other information about us at the offices of the NASDAQ National Market at 33 Whitehall Street, New York, New York.

Exhibit Number	Document Description	Report or Registration Statement	SEC File or Registration Number	Exhibit Reference
3.1	Articles of Restatement of Charter.	Annual Report on Form 10-K for the year ended December 31, 1993	000-02525	3	(i)
3.2	Articles of Amendment to Articles of Restatement of Charter.	Current Report on Form 8-K dated May 31, 2007	000-02525	3.1
3.3	Articles of Amendment to Articles of Restatement of Charter.	Current Report on Form 8-K dated May 7, 2008	000-02525	3.1
3.4	Articles of Amendment to Articles of Restatement of Charter.	Current Report on Form 8-K dated April 27, 2010	001-34073	3.1
3.5	Articles Supplementary of Huntington Bancshares Incorporated, as of April 22, 2008.	Current Report on Form 8-K dated April 22, 2008	000-02525	3.1
3.6	Articles Supplementary of Huntington Bancshares Incorporated, as of April 22. 2008.	Current Report on Form 8-K dated April 22, 2008	000-02525	3.2
3.7	Articles Supplementary of Huntington Bancshares Incorporated, as of November 12, 2008.	Current Report on Form 8-K dated November 12, 2008	001-34073	3.1
3.8	Articles Supplementary of Huntington Bancshares Incorporated, as of December 31, 2006.	Annual Report on Form 10-K for the year ended December 31, 2006	000-02525	3.4
3.9	Articles Supplementary of Huntington Bancshares Incorporated, as of December 28, 2011.	Current Report on Form 8-K dated December 28, 2011.	001-34073	3.1
3.10	Articles Supplementary of Huntington Bancshares Incorporated, as of March 18, 2016.	Current Report on Form 8-K dated March 21, 2016.	001-34073	3.1
3.11	Articles Supplementary of Huntington Bancshares Incorporated, as of May 3, 2016.	Current Report on Form 8-K dated May 5, 2016.	001-34073	3.2
3.12	Articles Supplementary of Huntington Bancshares Incorporated, effective as of August 15, 2016.	Registration Statement on Form 8-A dated August 15, 2016	001-34073	3.12
3.13	Bylaws of Huntington Bancshares Incorporated, as amended and restated, as of July 19, 2017.	Current Report on Form 8-K dated July 21, 2017	001-34073	3.1

102

4.1	Instruments defining the Rights of Security Holders—reference is made to Articles Fifth, Eighth, and Tenth of Articles of Restatement of Charter, as amended and supplemented. Instruments defining the rights of holders of long-term debt will be furnished to the Securities and Exchange Commission upon request.
10.2	* Corrected First Amendment to the 2015 Long-Term Incentive Plan
31.1	**Rule 13a-14(a) Certification – Chief Executive Officer.
31.2	**Rule 13a-14(a) Certification – Chief Financial Officer.
32.1	***Section 1350 Certification – Chief Executive Officer.
32.2	***Section 1350 Certification – Chief Financial Officer.
101	**The following material from Huntington’s Form 10-Q Report for the quarterly period ended June 30, 2017, formatted in XBRL: (1) Unaudited Condensed Consolidated Balance Sheets, (2) Unaudited Condensed Consolidated Statements of Income, (3) Unaudited Condensed Consolidated Statements of Comprehensive Income (4) Unaudited Condensed Consolidated Statement of Changes in Shareholders’ Equity, (5) Unaudited Condensed Consolidated Statements of Cash Flows, and (6) the Notes to Unaudited Condensed Consolidated Financial Statements.

*	Denotes management contract or compensatory plan or arrangement
**	Filed herewith
***	Furnished herewith

103

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Huntington Bancshares Incorporated

(Registrant)

Date:	July 31, 2017	/s/ Stephen D. Steinour
		Stephen D. Steinour
		Chairman, Chief Executive Officer and President
Date:	July 31, 2017	/s/ Howell D. McCullough III
		Howell D. McCullough III
		Chief Financial Officer

104

EX-10.2

Exhibit 10.2

HUNTINGTON BANCSHARES INCORPORATED

FIRST AMENDMENT TO THE

2015 LONG-TERM INCENTIVE PLAN

Background

A. Huntington Bancshares Incorporated (the “Corporation”) currently maintains the Huntington Bancshares Incorporated 2015 Long-Term Incentive Plan (the “Plan”).

B. The Corporation desires to amend the Plan to eliminate the mandatory minimum 6-month vesting period requirement for awards of stock options, stock appreciation rights, restricted stock, and restricted stock units granted under the Plan.

C. Article 18 of the Plan gives the Corporation the authority to amend the Plan from time to time.

Amendment

The following amendments are made to the Plan, effective for Awards granted on or after January 1, 2017.

1. Section 2.32 of the Plan is deleted in its entirety and replaced with the following:

2.32“PERIOD OF RESTRICTION” means the period during which the transfer of Shares of Restricted Stock or Restricted Stock Units is limited in some way, which may be the achievement of performance objectives or the passage of time, or both, such that the Shares or RSUs are subject to a substantial risk of forfeiture. A restriction based on the passage of time shall not fully lapse until the date that is three (3) years after the date of grant, except as otherwise may be provided in the Award Agreement for (a) new hires, (b) Retirement, (c) involuntary terminations of employment without Cause, (d) achievement of specific performance objectives, (e) death, (f) Disability, or (g) other circumstances that the Committee determines is in the best interests of the Corporation.

2.Section 6.2 of the Plan is deleted in its entirety and replaced with the following:

6.2AWARD AGREEMENT. Each Option grant shall be evidenced by an Award Agreement that shall specify the Option Price, the duration of the Option, the number of Shares to which the Option pertains, the date of grant, vesting restrictions, if any,and such other provisions as the Committee shall determine. The Award Agreement also shall specify whether the Option is intended to be an ISO or an NQSO. Notwithstanding the foregoing, an NQSO shall become fully vested no earlier than the date that is three (3) years after the date of grant of such NQSO, except as otherwise may be provided in the Award Agreement for (a) new hires, (b) Retirement, (c) involuntary terminations of employment without Cause, (d) achievement of specific performance objectives, (e) death, (f) Disability, or (g) other circumstances that the Committee determines is in the best interests of the Corporation.

3. Section 7.3 of the Plan is deleted in its entirety and replaced with the following:

7.3OTHER RESTRICTIONS. The Committee shall impose such other conditions and/or restrictions on any Shares of Restricted Stock granted pursuant to the Plan as it may deem advisable including, without limitation, a requirement that Participants pay a stipulated purchase price for each Share of Restricted Stock, restrictions based upon the achievement of specific performance objectives (Corporation-wide, business unit, and/or individual), Qualifying Performance Criteria, a Performance Cycle, time-based restrictions, and/or restrictions under applicable federal or state securities laws. Notwithstanding the foregoing, the Period of Restriction under any Restricted Stock Agreement generally may not fully lapse until the date that is three (3) years after the date of grant of such Restricted Stock, except as otherwise may be provided in a Restricted Stock Agreement for (a) new hires, (b) Retirement, (c) involuntary terminations of employment without Cause, (d) achievement of specific performance objectives, (e) death, (f) Disability, or (g) other circumstances that the Committee determines is in the best interests of the Corporation.

The Corporation shall either retain the certificates representing Shares of Restricted Stock in the Corporation’s possession or shall hold the Shares of Restricted Stock electronically with its transfer agent in the name of applicable Participants and for the benefit of applicable Participants until such time as all conditions and/or restrictions applicable to such Shares have been satisfied.

Except as otherwise provided in this Article 7, Shares of Restricted Stock covered by each Restricted Stock grant made under the Plan shall become freely transferable by the Participant after the last day of the applicable Period of Restriction.

4. Section 8.3 of the Plan is deleted in its entirety and replaced with the following:

8.3OTHER RESTRICTIONS. The Committee shall impose such other conditions and/or restrictions on any RSUs granted pursuant to the Plan as it may deem advisable including, without limitation, a requirement that Participants pay a stipulated purchase price for each RSU, restrictions based upon the achievement of specific performance objectives (Corporation-wide, business unit, and/or individual), Qualifying Performance Criteria, a Performance Cycle, time-based restrictions, and/or restrictions under applicable federal or state securities laws. Notwithstanding the foregoing, the Period of Restriction under any Restricted Stock Unit Award Agreement generally may not fully lapse until the date that is three (3) years after the date of grant of such RSU, except as otherwise may be provided in a Restricted Stock Unit Award Agreement for (a) new hires, (b) Retirement, (c) involuntary terminations of employment without Cause, (d) achievement of specific performance objectives, (e) death, (f) Disability, or (g) other circumstances that the Committee determines is in the best interests of the Corporation.

5. Section 9.2 of the Plan is deleted in its entirety and replaced with the following:

9.2AWARD AGREEMENT. Each SAR grant shall be evidenced by an Award Agreement that shall specify the SAR exercise price, the duration of the SAR, the number of

Shares to which the SAR pertains, whether the SAR is granted in tandem with the grant of an Option or is freestanding, the form of payment of the SAR upon exercise, and such other provisions as the Committee shall determine. SARs granted under this Article 9 shall be exercisable at such times and be subject to such restrictions and conditions as the Committee shall in each instance approve and which shall be set forth in the applicable Award Agreement, which need not be the same for each grant or for each Participant. Notwithstanding the foregoing, a SAR shall not fully vest until the date that is three (3) years after the date of grant of such SAR, except as otherwise may be provided in the Award Agreement for (a) new hires, (b) Retirement, (c) involuntary terminations of employment without Cause, (d) achievement of specific performance objectives, (e) death, (f) Disability, or (g) other circumstances that the Committee determines is in the best interests of the Corporation.

6. The remainder of the Plan shall remain unchanged.

The Corporation has caused this First Amendment to be executed on its behalf, by its officer duly authorized, this __________ day of _____________, 2017.

Huntington Bancshares Incorporated

By: ________________________________

Its: ________________________________

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Stephen D. Steinour, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Huntington Bancshares Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)), for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	July 31, 2017
		/s/	Stephen D. Steinour
			Stephen D. Steinour
			Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Howell D. McCullough III, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Huntington Bancshares Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)), for the registrant and have:

5. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

a) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

b) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

c) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

6. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	July 31, 2017
		/s/	Howell D. McCullough III
			Howell D. McCullough III
			Chief Financial Officer

EX-32.1

Exhibit 32.1

SECTION 1350 CERTIFICATION

In connection with the Quarterly Report of Huntington Bancshares Incorporated (the “Company”) on Form 10-Q for the three months ended June 30, 2017, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Stephen D. Steinour, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/	Stephen D. Steinour
	Stephen D. Steinour
	Chief Executive Officer
	July 31, 2017

EX-32.2

Exhibit 32.2

SECTION 1350 CERTIFICATION

In connection with the Quarterly Report of Huntington Bancshares Incorporated (the “Company”) on Form 10-Q for the three months ended June 30, 2017, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Howell D. McCullough III, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/	Howell D. McCullough III
	Howell D. McCullough III
	Chief Financial Officer
	July 31, 2017

XML

Document and Entity Information	6 Months Ended
	Jun. 30, 2017 shares
Document and Entity Information [Abstract]
Entity Registrant Name	HUNTINGTON BANCSHARES INC/MD
Entity Central Index Key	0000049196
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Amendment Flag	false
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)	1,090,016,469

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks		$ 1,515,476	$ 1,384,770
Interest-bearing deposits in banks		77,148	58,267
Trading account securities		94,767	133,295
Loans held for sale (includes $654,087 and $438,224 respectively, measured at fair value)(1)	[1]	748,077	512,951
Available-for-sale and other securities		15,388,306	15,562,837
Held-to-maturity securities		8,279,577	7,806,939
Loans and leases (includes $103,741 and $82,319 respectively, measured at fair value)(1)	[1]	68,059,310	66,961,996
Allowance for loan and lease losses		(667,996)	(638,413)
Net loans and leases		67,391,314	66,323,583
Bank owned life insurance		2,448,913	2,432,086
Premises and equipment		855,347	815,508
Goodwill		1,992,849	1,992,849
Other intangible assets		373,861	402,458
Servicing rights		224,656	225,578
Accrued income and other assets		2,016,488	2,062,976
Total assets		101,406,779	99,714,097
Liabilities
Deposits		75,933,373	75,607,717
Short-term borrowings		4,552,877	3,692,654
Long-term debt		8,536,471	8,309,159
Accrued expenses and other liabilities		1,729,876	1,796,421
Total liabilities		90,752,597	89,405,951
Shareholders’ equity
Preferred Stock		1,071,286	1,071,227
Common stock		10,932	10,886
Capital surplus		9,920,052	9,881,277
Less treasury shares, at cost		(31,288)	(27,384)
Accumulated other comprehensive loss		(350,357)	(401,016)
Retained (deficit) earnings		33,557	(226,844)
Total shareholders’ equity		10,654,182	10,308,146
Total liabilities and shareholders’ equity		$ 101,406,779	$ 99,714,097
Common shares authorized (par value of $0.01) (in shares)		1,500,000,000	1,500,000,000
Common shares issued (in shares)		1,093,162,464	1,088,641,251
Common shares outstanding (in shares)		1,090,016,469	1,085,688,538
Treasury shares outstanding (in shares)		3,145,995	2,952,713
Preferred stock, authorized shares (in shares)		6,617,808	6,617,808
Preferred shares issued (in shares)		2,702,571	2,702,571
Preferred shares outstanding (in shares)		1,098,006	1,098,006

[1] Amounts represent loans for which Huntington has elected the fair value option.

XML

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets
Loans held for sale, fair value	$ 654,087	$ 438,224
Loans and leases, fair value	$ 103,741	$ 82,319
Shareholders’ equity
Common stock, par value	$ 0.01	$ 0.01

XML

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest and fee income:
Loans and leases	$ 699,838	$ 469,770	$ 1,375,772	$ 933,192
Available-for-sale and other securities
Taxable	78,292	40,992	154,577	80,606
Tax-exempt	18,695	13,795	37,382	26,814
Held-to-maturity securities—taxable	44,276	35,420	89,471	72,209
Other	5,323	5,681	9,582	10,088
Total interest income	846,424	565,658	1,666,784	1,122,909
Interest expense:
Deposits	42,287	22,324	77,077	45,342
Short-term borrowings	5,203	913	11,069	1,811
Federal Home Loan Bank advances	66	72	132	141
Subordinated notes and other long-term debt	54,356	36,468	104,019	66,668
Total interest expense	101,912	59,777	192,297	113,962
Net interest income	744,512	505,881	1,474,487	1,008,947
Provision for credit losses	24,978	24,509	92,616	52,091
Net interest income after provision for credit losses	719,534	481,372	1,381,871	956,856
Service charges on deposit accounts	87,582	75,613	171,002	145,875
Cards and payment processing income	52,485	39,184	99,654	75,631
Mortgage banking income	32,268	31,591	63,960	50,134
Trust and investment management services	32,232	22,497	66,101	45,335
Insurance income	15,843	15,947	31,107	32,172
Brokerage income	16,294	14,599	32,052	30,101
Capital markets fees	16,836	13,037	31,036	26,047
Bank owned life insurance income	15,322	12,536	32,864	26,049
Gain on sale of loans	12,002	9,265	24,824	14,660
Net gains on sales of securities	3,694	732	3,710	732
Other noninterest income	44,219	36,187	84,954	66,319
Total noninterest income	325,218	271,112	637,681	512,979
Personnel costs	391,997	298,949	773,997	584,346
Outside data processing and other services	75,169	63,037	162,371	124,915
Equipment	42,924	31,805	89,624	64,381
Net occupancy	52,613	30,704	120,313	62,180
Professional services	18,190	21,488	36,485	35,026
Marketing	18,843	14,773	32,766	27,041
Deposit and other insurance expense	20,418	12,187	40,517	23,395
Amortization of intangibles	14,242	3,600	28,597	7,312
Other noninterest expense	59,968	47,118	117,116	86,145
Total noninterest expense	694,364	523,661	1,401,786	1,014,741
Income before income taxes	350,388	228,823	617,766	455,094
Provision for income taxes	78,647	54,283	137,931	109,240
Net income	271,741	174,540	479,835	345,854
Dividends on preferred shares	18,889	19,874	37,767	27,872
Net income applicable to common shares	$ 252,852	$ 154,666	$ 442,068	$ 317,982
Average common shares—basic (in shares)	1,088,934	798,167	1,087,654	796,961
Average common shares—diluted (in shares)	1,108,527	810,371	1,108,572	809,360
Per common share:
Net income—basic (in usd per share)	$ 0.23	$ 0.19	$ 0.41	$ 0.40
Net income—diluted (in usd per share)	0.23	0.19	0.40	0.39
Cash dividends declared (in usd per share)	$ 0.08	$ 0.07	$ 0.16	$ 0.14
OTTI losses for the periods presented:
Total OTTI losses	$ (3,563)	$ (76)	$ (3,589)	$ (3,809)
Noncredit-related portion of loss recognized in OCI	4	0	6	3,733
Impairment losses recognized in earnings on available-for-sale securities	$ (3,559)	$ (76)	$ (3,583)	$ (76)

XML

Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 271,741	$ 174,540	$ 479,835	$ 345,854
Unrealized gains (losses) on available-for-sale and other securities:
Non-credit-related impairment recoveries (losses) on debt securities not expected to be sold	1,602	667	2,126	(1,682)
Unrealized net gains (losses) on available-for-sale and other securities arising during the period, net of reclassification for net realized gains and losses	(37,052)	(30,603)	(47,050)	(82,154)
Total unrealized gains (losses) on available-for-sale and other securities	38,654	31,270	49,176	80,472
Unrealized gains (losses) on cash flow hedging derivatives, net of reclassifications to income	1,070	1,134	244	9,963
Change in accumulated unrealized losses for pension and other post-retirement obligations	779	840	1,239	1,681
Other comprehensive income (loss), net of tax	40,503	33,244	50,659	92,116
Comprehensive income	$ 312,244	$ 207,784	$ 530,494	$ 437,970

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Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Capital Surplus	Treasury Stock	Accumulated Other Comprehensive Loss	Retained Earnings (Deficit)	Preferred Stock	Series A Preferred Stock	Series A Preferred Stock Retained Earnings (Deficit)	Series B Preferred Stock	Series B Preferred Stock Retained Earnings (Deficit)	Series C Preferred Stock	Series C Preferred Stock Retained Earnings (Deficit)	Series D Preferred Stock	Series D Preferred Stock Retained Earnings (Deficit)
Balance, beginning of period (in shares) at Dec. 31, 2015		796,970		(2,041)
Balance, beginning of period at Dec. 31, 2015	$ 6,594,606	$ 7,970	$ 7,038,502	$ (17,932)	$ (226,158)	$ (594,067)	$ 386,291
Comprehensive Income:
Net income	345,854					345,854
Other comprehensive income (loss)	92,116				92,116
Cash dividends declared:
Common stock, dividend	(111,735)					(111,735)
Preferred stock, dividend								$ (15,407)	$ (15,407)	$ (590)	$ (590)			$ (11,875)	$ (11,875)
Recognition of the fair value of share-based compensation	27,799		27,799
Other share-based compensation activity (in shares)		4,559
Other share-based compensation activity	4,913	$ 45	7,872			(3,004)
Other (in shares)		0		(334)
Other	(3,364)	$ 0	76	$ (3,426)		(14)
Balance, end of period (in shares) at Jun. 30, 2016		801,529		(2,375)
Balance, end of period at Jun. 30, 2016	7,507,304	$ 8,015	7,074,249	$ (21,358)	(134,042)	(390,838)	971,278
Cash dividends declared:
Stock Issued During Period, Value, New Issues	584,987													584,987
Balance, beginning of period (in shares) at Dec. 31, 2016		1,088,641		(2,953)
Balance, beginning of period at Dec. 31, 2016	10,308,146	$ 10,886	9,881,277	$ (27,384)	(401,016)	(226,844)	1,071,227
Comprehensive Income:
Net income	479,835					479,835
Other comprehensive income (loss)	50,659				50,659
Cash dividends declared:
Common stock, dividend	(174,369)					(174,369)
Preferred stock, dividend								$ (15,406)	$ (15,406)	$ (673)	$ (673)	$ (2,938)	$ (2,938)	$ (18,750)	$ (18,750)
Recognition of the fair value of share-based compensation	52,045		52,045
Other share-based compensation activity (in shares)		4,514
Other share-based compensation activity	(21,624)	$ 45	(14,612)			(7,057)
Other (in shares)		(7)		193
Other	(2,743)	$ 1	1,342	$ (3,904)		(241)
Balance, end of period (in shares) at Jun. 30, 2017		1,093,162		(3,146)
Balance, end of period at Jun. 30, 2017	$ 10,654,182	$ 10,932	$ 9,920,052	$ (31,288)	$ (350,357)	$ 33,557	$ 1,071,286

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Condensed Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash dividends declared:
Common stock, Cash dividend per share (in usd per share)	$ 0.16	$ 0.14
Series A Preferred Stock
Cash dividends declared:
Preferred stock dividend per share (in usd per share)	42.50	42.50
Series B Preferred Stock
Cash dividends declared:
Preferred stock dividend per share (in usd per share)	18.95	16.63
Series C Preferred Stock
Cash dividends declared:
Preferred stock dividend per share (in usd per share)	29.38	0
Series D Preferred Stock
Cash dividends declared:
Preferred stock dividend per share (in usd per share)	$ 31.25	$ 19.79

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating activities
Net income	$ 479,835	$ 345,854
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	92,616	52,091
Depreciation and amortization	210,825	208,249
Share-based compensation expense	52,045	27,799
Net gain on sales of securities	(127)	(656)
Net change in:
Trading account securities	38,528	1,708
Loans held for sale	(220,674)	(307,880)
Accrued income and other assets	(57,635)	(97,334)
Deferred income taxes	11,725	(6,864)
Accrued expense and other liabilities	(60,182)	70,554
Other, net	11,661	(7,539)
Net cash provided by (used for) operating activities	558,744	286,638
Investing activities
Change in interest bearing deposits in banks	19,474	6,942
Proceeds from:
Maturities and calls of available-for-sale and other securities	715,893	467,633
Maturities of held-to-maturity securities	523,309	495,645
Sales of available-for-sale and other securities	411,763	170,986
Purchases of available-for-sale and other securities	(1,891,781)	(1,405,035)
Purchases of held-to-maturity securities	(8,616)	0
Net proceeds from sales of portfolio loans	259,165	234,608
Net loan and lease activity, excluding sales and purchases	(1,429,367)	(2,220,929)
Purchases of premises and equipment	(112,566)	(19,846)
Proceeds from sales of other real estate	17,802	13,290
Purchases of loans and leases	(93,560)	(341,985)
Other, net	8,343	2,698
Net cash provided by (used for) investing activities	(1,580,141)	(2,595,993)
Financing activities
Increase (decrease) in deposits	325,656	(256,333)
Increase (decrease) in short-term borrowings	838,389	1,335,888
Net proceeds from issuance of long-term debt	1,060,697	1,051,794
Maturity/redemption of long-term debt	(843,019)	(255,750)
Dividends paid on preferred stock	(37,743)	(27,872)
Dividends paid on common stock	(174,168)	(112,087)
Proceeds from stock options exercised	6,884	3,887
Net proceeds from issuance of preferred stock	0	584,987
Payments related to tax-withholding for share based compensation awards	(24,593)	0
Other, net	0	4,865
Net cash provided by (used for) financing activities	1,152,103	2,329,379
Increase (decrease) in cash and cash equivalents	130,706	20,024
Cash and cash equivalents at beginning of period	1,384,770	847,156
Cash and cash equivalents at end of period	1,515,476	867,180
Supplemental disclosures:
Interest paid	185,107	107,428
Income taxes paid (refunded)	54,434	3,099
Non-cash activities
Loans transferred to held-for-sale from portfolio	298,331	266,527
Loans transferred to portfolio from held-for-sale	1,265	10,661
Transfer of loans to OREO	16,926	$ 12,974
Available For Sale Securities Transferred To Held To Maturity Securities	$ 1,000,000

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ACCOUNTING STANDARDS UPDATE

6 Months Ended

Jun. 30, 2017

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

ACCOUNTING STANDARDS UPDATE

ACCOUNTING STANDARDS UPDATE

ASU 2014-09—Revenue from Contracts with Customers (Topic 606): The amendments in ASU 2014-09 supersede the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. The general principle of the amendments require an entity to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance sets forth a five step approach for revenue recognition. The amendments are effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Management intends to adopt the new guidance on January 1, 2018 using the modified retrospective approach and is well into its outlined implementation plan. In this regard, management has completed a preliminary analysis that includes (a) identification of all revenue streams included in the financial statements; (b) determination of scope exclusions to identify ‘in-scope’ revenue streams; (c) determination of size, timing, and amount of revenue recognition for in-scope items; (d) determination of sample size of contracts for further analysis; and (e) completion of limited analysis on selected contracts to evaluate the potential impact of the new guidance. The key revenue streams identified include service charges, credit card and payment processing fees, trust services fees, insurance income, brokerage services, and mortgage banking income. The new guidance is not expected to have a significant impact on Huntington’s Unaudited Consolidated Financial Statements.

ASU 2016-01 - Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this Update make targeted improvements to GAAP including, but not limited to, requiring an entity to measure its equity investments with changes in the fair value recognized in the income statement; requiring an entity to present separately in OCI the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments (i.e., FVO liability); requiring public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; assessing deferred tax assets related to a net unrealized loss on AFS securities in combination with the entity’s other deferred tax assets; and eliminating some of the disclosures required by the existing GAAP while requiring entities to present and disclose some additional information. The new guidance is effective for the fiscal period beginning after December 15, 2017, including interim periods within those fiscal years. An entity should apply the amendments as a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendment is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2016-02 - Leases. This Update sets forth a new lease accounting model for lessors and lessees. For lessees, virtually all leases will be required to be recognized on the balance sheet by recording a right-of-use asset and lease liability. Subsequent accounting for leases varies depending on whether the lease is an operating lease or a finance lease. The accounting applied by a lessor is largely unchanged from that applied under the existing guidance. The ASU requires additional qualitative and quantitative disclosures with the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The Update is effective for the fiscal period beginning after December 15, 2018, with early application permitted. Management is currently assessing the impact of the new guidance on Huntington's Unaudited Consolidated Financial Statements. Huntington expects to recognize a right-of-use asset and a lease liability for its operating lease commitments.

ASU 2016-13 - Financial Instruments - Credit Losses. The amendments in this Update eliminate the probable recognition threshold for credit losses on financial assets measured at amortized cost. The Update requires those financial assets to be presented at the net amount expected to be collected (i.e., net of expected credit losses). The measurement of expected credit losses should be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. The Update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018. The amendments should be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. Management currently intends to adopt the guidance on January 1, 2020 and is assessing the impact of this Update on Huntington's Unaudited Consolidated Financial Statements. Management has formed a working group comprised of teams from different disciplines including credit and finance. The working group is currently evaluating the requirements of the new standard and the impact it will have on our processes. The early stages of this evaluation include a review of existing credit models to identify areas where existing credit models used to comply with other regulatory requirements may be leveraged and areas where new impairment models may be required.

ASU 2016-15 - Classification of Certain Cash Receipts and Cash Payments. The amendments in this Update add or clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. Current guidance lacks consistent principles for evaluating the classification of cash payments and receipts in the statement of cash flows. This has led to diversity in practice and, in certain circumstances, financial statement restatements. Therefore, the FASB issued the ASU with the intent of reducing diversity in practice with respect to several types of cash flows. The amendments in this Update are effective using a retrospective transition approach for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. This Update is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2017-04 - Simplifying the Test for Goodwill Impairment. The Update simplifies the goodwill impairment test. Under the new guidance, Step 2 of the goodwill impairment process that requires an entity to determine the implied fair value of its goodwill by assigning fair value to all its assets and liabilities, is eliminated. Instead, the entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The new guidance is effective for annual and interim goodwill tests performed in fiscal years beginning after December 15, 2019. Early adoption is permitted. The amendment is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2017-07 - Improving the Presentation of Net Periodic Pension Cost and Periodic Postretirement Benefit Cost. The amendments in this Update require that an employer report the service cost component of the pension cost and postretirement benefit cost in the same line items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of the net benefit cost should be presented in the income statement separately from the service cost component. The amendments in this Update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted as of the beginning of an annual period for which financial statements have not been issued or made available for issuance. This Update is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2017-09 - Stock Compensation Modification Accounting. The Update reduces the current diversity in practice and provides explicit guidance pertaining to the provisions of modification accounting. The Update clarifies that an entity should account for effects of modification unless the fair value, vesting conditions and the classification of the modified award are the same as of the original awards immediately before the original award is modified. The Update is effective prospectively for annual periods and interim periods within those annual periods, beginning after December 15, 2017. Earlier application is permitted. The Update is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

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BASIS OF PRESENTATION

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION

BASIS OF PRESENTATION

The accompanying Unaudited Condensed Consolidated Financial Statements of Huntington reflect all adjustments consisting of normal recurring accruals which are, in the opinion of Management, necessary for a fair statement of the consolidated financial position, the results of operations, and cash flows for the periods presented. The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by GAAP. These Unaudited Condensed Consolidated Financial Statements have been prepared according to the rules and regulations of the SEC and, therefore, certain information and footnote disclosures normally included in annual financial statements prepared in accordance with GAAP have been omitted. The Notes to Consolidated Financial Statements appearing in Huntington’s 2016 Form 10-K, which include descriptions of significant accounting policies, as updated by the information contained in this report, should be read in conjunction with these interim financial statements.

For statement of cash flows purposes, cash and cash equivalents are defined as the sum of “Cash and due from banks” which includes amounts on deposit with the Federal Reserve and “Federal funds sold and securities purchased under resale agreements.”

In conjunction with applicable accounting standards, all material subsequent events have been either recognized in the Unaudited Condensed Consolidated Financial Statements or disclosed in the Notes to Unaudited Condensed Consolidated Financial Statements.

Certain amounts reported in prior periods have been reclassified to conform to the current period presentation.

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES

6 Months Ended

Jun. 30, 2017

Receivables [Abstract]

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES

Loans and leases for which Huntington has the intent and ability to hold for the foreseeable future, or until maturity or payoff, are classified in the Unaudited Condensed Consolidated Balance Sheets as loans and leases. Except for loans which are accounted for at fair value, loans are carried at the principal amount outstanding, net of unamortized premiums and discounts and deferred loan fees and costs and purchase accounting adjustments, which resulted in a net premium of $245 million and $120 million at June 30, 2017 and December 31, 2016, respectively.

Loan and Lease Portfolio Composition

The following table provides a detailed listing of Huntington’s loan and lease portfolio at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	June 30, 2017			December 31, 2016
Loans and leases:
Commercial and industrial	$	27,969,151		$	28,058,712
Commercial real estate	7,145,151			7,300,901
Automobile	11,555,137			10,968,782
Home equity	9,965,534			10,105,774
Residential mortgage	8,237,297			7,724,961
RV and marine finance	2,177,732			1,846,447
Other consumer	1,009,308			956,419
Loans and leases	68,059,310			66,961,996
Allowance for loan and lease losses	(667,996		)	(638,413		)
Net loans and leases	$	67,391,314		$	66,323,583

Purchased Credit-Impaired Loans

The following table presents a rollforward of the accretable yield for purchased credit impaired loans for the three-month and six-month period ended June 30, 2017: and 2016:

	Three Months Ended June 30,			Six Months Ended June 30,
(dollar amounts in thousands)	2017			2017
FirstMerit
Balance, beginning of period	$	37,372		$	36,669
Accretion	(4,788		)	(9,490		)
Reclassification (to) from nonaccretable difference	3,925			9,330
Balance, end of period	$	36,509		$	36,509

The following table reflects the ending and unpaid balances of the purchase credit impaired loans at June 30, 2017 and December 31, 2016:

	June 30, 2017						December 31, 2016
(dollar amounts in thousands)	Ending Balance		Unpaid Balance		ALLL		Ending Balance		Unpaid Balance		ALLL
FirstMerit
Commercial and industrial	$	54,942	$	81,934	$	970	$	68,338	$	100,031	$	—
Commercial real estate	20,780		34,904		—		34,042		56,320		—
Total	$	75,722	$	116,838	$	970	$	102,380	$	156,351	$	—

During the second quarter 2017, an allowance for loan losses was recorded on the Commercial and industrial purchased credit-impaired portfolio for $1 million.

NALs and Past Due Loans

Loans are considered past due when the contractual amounts due with respect to principal and interest are not received within 30 days of the contractual due date. See Note 1 “Significant Accounting Policies” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of the accounting policies related to the ACL.

The following table presents NALs by loan class at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	June 30, 2017		December 31, 2016
Commercial and industrial	$	195,279	$	234,184
Commercial real estate	16,763		20,508
Automobile	3,825		5,766
Home equity	67,940		71,798
Residential mortgage	80,306		90,502
RV and marine finance	341		245
Other consumer	2		—
Total nonaccrual loans	$	364,456	$	423,003

The following table presents an aging analysis of loans and leases, including past due loans, by loan class at June 30, 2017 and December 31, 2016: (1)

	June 30, 2017
	Past Due												Loans Accounted for Under the Fair Value Option		Total Loans and Leases		90 or more days past due and accruing
(dollar amounts in thousands)	30-59 Days		60-89  Days		90 or  more days		Total		Current		Purchased Credit Impaired
Commercial and industrial	$	44,796	$	13,608	$	84,609	$	143,013	$	27,771,196	$	54,942	$	—	$	27,969,151	$	21,501	(2)
Commercial real estate	7,382		3,918		27,314		38,614		7,085,757		20,780		—		7,145,151		17,040
Automobile	68,600		15,241		8,716		92,557		11,461,169		—		1,411		11,555,137		8,594
Home equity	44,513		16,463		61,159		122,135		9,840,922		—		2,477		9,965,534		18,459
Residential mortgage	117,779		40,327		110,842		268,948		7,869,927		—		98,422		8,237,297		65,159		(3)
RV and marine finance	8,072		2,443		2,666		13,181		2,163,346		—		1,205		2,177,732		2,464
Other consumer	9,913		4,081		3,146		17,140		991,942		—		226		1,009,308		3,143
Total loans and leases	$	301,055	$	96,081	$	298,452	$	695,588	$	67,184,259	$	75,722	$	103,741	$	68,059,310	$	136,360

	December 31, 2016
	Past Due												Loans Accounted for Under the Fair Value Option		Total Loans and Leases		90 or more days past due and accruing
(dollar amounts in thousands)	30-59 Days		60-89  Days		90 or  more days		Total		Current		Purchased Credit Impaired
Commercial and industrial	42,052		20,136		74,174		136,362		27,854,012		68,338		—		28,058,712		18,148		(2)
Commercial real estate	21,187		3,202		29,659		54,048		7,212,811		34,042		—		7,300,901		17,215
Automobile loans	76,283		17,188		10,442		103,913		10,862,715		—		2,154		10,968,782		10,182
Home equity	38,899		23,903		53,002		115,804		9,986,697		—		3,273		10,105,774		11,508
Residential mortgage	122,469		37,460		116,682		276,611		7,373,414		—		74,936		7,724,961		66,952		(3)
RV and marine finance	10,009		2,230		1,566		13,805		1,831,123		—		1,519		1,846,447		1,462
Other consumer	9,442		4,324		3,894		17,660		938,322		—		437		956,419		3,895
Total loans and leases	$	320,341	$	108,443	$	289,419	$	718,203	$	66,059,094	$	102,380	$	82,319	$	66,961,996	$	129,362

(1) NALs are included in this aging analysis based on the loan’s past due status.

(2) Amounts include Huntington Technology Finance administrative lease delinquencies.

(3) Amounts include loans guaranteed by government organizations.

Allowance for Credit Losses

Huntington maintains two reserves, both of which reflect management’s judgment regarding the appropriate level necessary to absorb credit losses inherent in our loan and lease portfolio: the ALLL and the AULC. Combined, these reserves comprise the total ACL. The determination of the ACL requires significant estimates, including the timing and amounts of expected future cash flows on impaired loans and leases, consideration of current economic conditions, and historical loss experience pertaining to pools of homogeneous loans and leases, all of which may be susceptible to change. See Note 1 “Significant Accounting Policies” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of the accounting policies related to the ACL.

The ACL is increased through a provision for credit losses that is charged to earnings, based on Management’s quarterly evaluation and is reduced by charge-offs, net of recoveries, and the ACL associated with loans sold or transferred to held for sale.

The following table presents ALLL and AULC activity by portfolio segment for the three-month and six-month periods ended June 30, 2017 and 2016:

(dollar amounts in thousands)	Commercial			Consumer			Total
Three-month period ended June 30, 2017:
ALLL balance, beginning of period	$	480,308		$	192,272		$	672,580
Loan charge-offs	(15,103		)	(41,345		)	(56,448		)
Recoveries of loans previously charged-off	5,787			14,621			20,408
Provision for (reduction in allowance) loan and lease losses	3,585			27,872			31,457
Allowance for loans sold or transferred to loans held for sale	(1		)	—			(1		)
ALLL balance, end of period	$	474,576		$	193,420		$	667,996
AULC balance, beginning of period	$	88,899		$	2,939		$	91,838
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(6,072		)	(407		)	(6,479		)
AULC balance, end of period	$	82,827		$	2,532		$	85,359
ACL balance, end of period	$	557,403		$	195,952		$	753,355
Six-month period ended June 30, 2017:
ALLL balance, beginning of period	$	451,091		$	187,322		$	638,413
Loan charge-offs	(38,773		)	(88,390		)	(127,163		)
Recoveries of loans previously charged-off	23,604			28,081			51,685
Provision for (reduction in allowance) loan and lease losses	38,729			66,407			105,136
Allowance for loans sold or transferred to loans held for sale	(75		)	—			(75		)
ALLL balance, end of period	$	474,576		$	193,420		$	667,996
AULC balance, beginning of period	$	86,543		$	11,336		$	97,879
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(3,716		)	(8,804		)	(12,520		)
AULC balance, end of period	$	82,827		$	2,532		$	85,359
ACL balance, end of period	$	557,403		$	195,952		$	753,355

(dollar amounts in thousands)	Commercial			Consumer			Total
Three-month period ended June 30, 2016:
ALLL balance, beginning of period	$	422,441		$	191,278		$	613,719
Loan charge-offs	(16,933		)	(26,612		)	(43,545		)
Recoveries of loans previously charged-off	13,904			12,886			26,790
Provision for (reduction in allowance) loan and lease losses	5,095			20,991			26,086
Allowance for loans sold or transferred to loans held for sale	—			14			14
ALLL balance, end of period	$	424,507		$	198,557		$	623,064
AULC balance, beginning of period	$	65,872		$	9,453		$	75,325
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(2,155		)	578			(1,577		)
AULC balance, end of period	$	63,717		$	10,031		$	73,748
ACL balance, end of period	$	488,224		$	208,588		$	696,812
Six-month period ended June 30, 2016:
ALLL balance, beginning of period	$	398,753		$	199,090		$	597,843
Loan charge-offs	(45,882		)	(57,355		)	(103,237		)
Recoveries of loans previously charged-off	53,815			24,115			77,930
Provision for (reduction in allowance) loan and lease losses	17,821			32,603			50,424
Allowance for loans sold or transferred to loans held for sale	—			104			104
ALLL balance, end of period	$	424,507		$	198,557		$	623,064
AULC balance, beginning of period	$	63,448		$	8,633		$	72,081
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	269			1,398			1,667
AULC balance, end of period	$	63,717		$	10,031		$	73,748
ACL balance, end of period	$	488,224		$	208,588		$	696,812

Credit Quality Indicators

See Note 4 “Loans / Leases and Allowance for Credit Losses” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of the credit quality indicators Huntington utilizes for monitoring credit quality and for determining an appropriate ACL level.

The following table presents each loan and lease class by credit quality indicator at June 30, 2017 and December 31, 2016:

	June 30, 2017
	Credit Risk Profile by UCS Classification
(dollar amounts in thousands)	Pass		OLEM		Substandard		Doubtful		Total
Commercial
Commercial and industrial	$	26,006,917	$	798,643	$	1,138,508	$	25,083	$	27,969,151
Commercial real estate	6,923,159		88,932		132,017		1,043		7,145,151
	Credit Risk Profile by FICO Score (1), (2)
	750+		650-749		<650		Other (3)		Total
Consumer
Automobile	$	5,728,416	$	4,202,063	$	1,350,925	$	272,322	$	11,553,726
Home equity	6,296,801		3,013,152		619,661		33,443		9,963,057
Residential mortgage	4,945,403		2,449,297		610,720		133,455		8,138,875
RV and marine finance	1,287,480		774,873		85,844		28,330		2,176,527
Other consumer	386,659		481,324		135,161		5,938		1,009,082

	December 31, 2016
	Credit Risk Profile by UCS Classification
(dollar amounts in thousands)	Pass		OLEM		Substandard		Doubtful		Total
Commercial
Commercial and industrial	$	26,211,885	$	810,287	$	1,028,819	$	7,721	$	28,058,712
Commercial real estate	7,042,304		96,975		159,098		2,524		7,300,901
	Credit Risk Profile by FICO Score (1), (2)
	750+		650-749		<650		Other (3)		Total
Consumer
Automobile	$	5,369,085	$	4,043,611	$	1,298,460	$	255,472	$	10,966,628
Home equity	6,280,328		2,891,330		637,560		293,283		10,102,501
Residential mortgage	4,662,777		2,285,121		615,067		87,060		7,650,025
RV and marine finance	1,064,143		644,039		72,995		63,751		1,844,928
Other consumer	346,867		455,959		133,243		19,913		955,982

(1) Excludes loans accounted for under the fair value option.

(2) Reflects most recent customer credit scores.

(3) Reflects deferred fees and costs, loans in process, loans to legal entities, etc.

Impaired Loans

See Note 1 “Significant Accounting Policies” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of accounting policies related to impaired loans.

The following tables present the balance of the ALLL attributable to loans by portfolio segment individually and collectively evaluated for impairment and the related loan and lease balance at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	Commercial		Consumer		Total
ALLL at June 30, 2017:
Portion of ALLL balance:
Purchased credit-impaired loans	$	970	$	—	$	970
Attributable to loans individually evaluated for impairment	14,239		9,044		23,283
Attributable to loans collectively evaluated for impairment	459,367		184,376		643,743
Total ALLL balance	$	474,576	$	193,420	$	667,996
Loan and Lease Ending Balances at June 30, 2017: (1)
Portion of loan and lease ending balance:
Purchased credit-impaired loans	$	75,722	$	—	$	75,722
Individually evaluated for impairment	441,499		451,192		892,691
Collectively evaluated for impairment	34,597,081		32,390,075		66,987,156
Total loans and leases evaluated for impairment	$	35,114,302	$	32,841,267	$	67,955,569

(dollar amounts in thousands)	Commercial		Consumer		Total
ALLL at December 31, 2016
Portion of ALLL balance:
Attributable to loans individually evaluated for impairment	$	10,525	$	11,021	$	21,546
Attributable to loans collectively evaluated for impairment	440,566		176,301		616,867
Total ALLL balance:	$	451,091	$	187,322	$	638,413
Loan and Lease Ending Balances at December 31, 2016 (1)
Portion of loan and lease ending balances:
Purchased credit-impaired loans	$	102,380	$	—	$	102,380
Individually evaluated for impairment	415,624		457,890		873,514
Collectively evaluated for impairment	34,841,609		31,062,174		65,903,783
Total loans and leases evaluated for impairment	$	35,359,613	$	31,520,064	$	66,879,677

(1) Excludes loans accounted for under the fair value option.

The following tables present by class the ending, unpaid principal balance, and the related ALLL, along with the average balance and interest income recognized only for impaired loans and leases and purchased credit-impaired loans: (1), (2)

	June 30, 2017						Three Months Ended June 30, 2017				Six Months Ended June 30, 2017
(dollar amounts in thousands)	Ending Balance		Unpaid Principal Balance (5)		Related Allowance		Average Balance		Interest Income Recognized		Average Balance		Interest Income Recognized
With no related allowance recorded:
Commercial and industrial	$	261,285	$	270,571	$	—	$	262,631	$	4,852	$	268,041	$	9,352
Commercial real estate	76,463		106,248		—		82,296		1,937		84,865		3,937
Automobile	—		—		—		—		—		—		—
Home equity	—		—		—		—		—		—		—
Residential mortgage	—		—		—		—		—		—		—
RV and marine finance	—		—		—		—		—		—		—
Other consumer	—		—		—		—		—		—		—
With an allowance recorded:
Commercial and industrial (3)	283,409		342,188		24,423		258,066		2,002		310,611		3,908
Commercial real estate (4)	34,270		41,695		2,340		38,753		453		58,563		920
Automobile	32,431		32,642		1,889		32,581		546		32,041		1,080
Home equity (6)	325,805		357,738		17,844		326,280		3,977		323,988		7,927
Residential mortgage (6)	329,050		363,277		11,578		339,289		2,903		335,444		6,013
RV and marine finance	1,331		1,355		134		1,009		23		672		34
Other consumer	4,126		4,126		253		4,186		55		4,090		111
Total
Commercial and industrial	544,694		612,759		24,423		520,697		6,854		578,652		13,260
Commercial real estate	110,733		147,943		2,340		121,049		2,390		143,428		4,857
Automobile	32,431		32,642		1,889		32,581		546		32,041		1,080
Home equity	325,805		357,738		17,844		326,280		3,977		323,988		7,927
Residential mortgage	329,050		363,277		11,578		339,289		2,903		335,444		6,013
RV and marine finance	1,331		1,355		134		1,009		23		672		34
Other consumer	4,126		4,126		253		4,186		55		4,090		111

	December 31, 2016						Three Months Ended June 30, 2016				Six Months Ended June 30, 2016
(dollar amounts in thousands)	Ending Balance		Unpaid Principal Balance (5)		Related Allowance		Average Balance		Interest Income Recognized		Average Balance		Interest Income Recognized
With no related allowance recorded:
Commercial and industrial	$	299,606	$	358,712	$	—	$	289,138	$	2,392	$	284,128	$	4,623
Commercial real estate	88,817		126,152		—		72,569		1,855		72,640		3,472
Automobile	—		—		—		—		—		—		—
Home equity	—		—		—		—		—		—		—
Residential mortgage	—		—		—		1,298		109		1,350		111
RV and marine finance	—		—		—		—		—		—		—
Other consumer	—		—		—		19		2		30		104
With an allowance recorded:
Commercial and industrial (3)	406,243		448,121		22,259		291,761		1,739		269,518		3,829
Commercial real estate (4)	97,238		107,512		3,434		58,357		615		69,501		1,373
Automobile	30,961		31,298		1,850		32,032		524		31,789		1,102
Home equity (6)	319,404		352,722		15,032		248,056		2,962		248,317		5,930
Residential mortgage (6)	327,753		363,099		12,849		352,489		3,027		357,324		6,064
RV and marine finance	—		—		—		—		—		—		—
Other consumer	3,897		3,897		260		4,812		53		4,754		120
Total
Commercial and industrial	705,849		806,833		22,259		580,899		4,131		553,646		8,452
Commercial real estate	186,055		233,664		3,434		130,926		2,470		142,141		4,845
Automobile	30,961		31,298		1,850		32,032		524		31,789		1,102
Home equity	319,404		352,722		15,032		248,056		2,962		248,317		5,930
Residential mortgage	327,753		363,099		12,849		353,787		3,136		358,674		6,175
RV and marine finance	—		—		—		—		—		—		—
Other consumer	3,897		3,897		260		4,831		55		4,784		224

(1) These tables do not include loans fully charged-off.

(2) All automobile, RV and marine finance and other consumer impaired loans included in these tables are considered impaired due to their status as a TDR.

(3) At June 30, 2017 and December 31, 2016, commercial and industrial loans of $115 million and $293 million, respectively, were considered impaired due to their status as a TDR.

(4) At June 30, 2017 and December 31, 2016, commercial real estate loans of $23 million and $81 million, respectively, were considered impaired due to their status as a TDR.

(5) The differences between the ending balance and unpaid principal balance amounts represent partial charge-offs.

(6) Includes home equity and residential mortgages considered to be collateral dependent as well as home equity and mortgage loans considered impaired due to their status as a TDR.

TDR Loans

TDRs are modified loans where a concession was provided to a borrower experiencing financial difficulties. Loan modifications are considered TDRs when the concessions provided are not available to the borrower through either normal channels or other sources. However, not all loan modifications are TDRs. Acquired, non-purchased credit impaired loan are only considered for TDR reporting for modifications made subsequent to acquisition. See Note 4 “Loans / Leases and Allowance for Credit Losses” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for an additional discussion of TDRs.

The following table presents by class and modification type, the number of contracts, post-modification outstanding balance, and the financial effects of the modification for the three-month and six-month periods ended June 30, 2017 an 2016:

	New Troubled Debt Restructurings During The Three-Month Period Ended (1)
	June 30, 2017						June 30, 2016
(dollar amounts in thousands)	Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)			Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)
Commercial and industrial:
Interest rate reduction	1	$	18	$	—		1	$	22	$	—
Amortization or maturity date change	228	168,118		(6,856		)	199	133,933		(3,490		)
Other	1	220		—			2	232		—
Total Commercial and industrial	230	168,356		(6,856		)	202	134,187		(3,490		)
Commercial real estate:
Interest rate reduction	—	—		—			1	84		—
Amortization or maturity date change	19	25,027		(427		)	36	16,017		(723		)
Other	—	—		—			2	52		—
Total commercial real estate:	19	25,027		(427		)	39	16,153		(723		)
Automobile:
Interest rate reduction	5	58		1			3	64		5
Amortization or maturity date change	334	2,853		67			286	2,663		202
Chapter 7 bankruptcy	198	1,494		18			244	1,982		114
Other	—	—		—			—	—		—
Total Automobile	537	4,405		86			533	4,709		321
Home equity:
Interest rate reduction	9	506		6			9	627		26
Amortization or maturity date change	135	8,372		(754		)	127	6,401		(736		)
Chapter 7 bankruptcy	77	2,417		364			46	2,114		267
Other	12	512		—			—	—		—
Total Home equity	233	11,807		(384		)	182	9,142		(443		)
Residential mortgage:
Interest rate reduction	—	—		—			5	404		17
Amortization or maturity date change	81	8,296		(231		)	108	10,641		(420		)
Chapter 7 bankruptcy	25	1,981		(1		)	6	1,178		(49		)
Other	5	464		3			1	164		—
Total Residential mortgage	111	10,741		(229		)	120	12,387		(452		)
RV and marine finance:
Interest rate reduction	—	—		—			—	—		—
Amortization or maturity date change	10	150		4			—	—		—
Chapter 7 bankruptcy	34	544		6			—	—		—
Other	—	—		—			—	—		—
Total RV and marine finance	44	694		10			—	—		—
Other consumer:
Interest rate reduction	—	—		—			—	—		—
Amortization or maturity date change	2	21		—			1	4		—
Chapter 7 bankruptcy	2	8		—			—	—		—
Other	—	—		—			—	—		—
Total Other consumer	4	29		—			1	4		—
Total new troubled debt restructurings	1,178	$	221,059	$	(7,800	)	1,077	$	176,582	$	(4,787	)

	New Troubled Debt Restructurings During The Six-Month Period Ended (1)
	June 30, 2017						June 30, 2016
(dollar amounts in thousands)	Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)			Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)
Commercial and industrial:
Interest rate reduction	2	$	37	$	6		2	$	39	$	(1	)
Amortization or maturity date change	464	280,543		(7,858		)	383	256,591		(2,918		)
Other	4	380		(27		)	10	1,090		(4		)
Total Commercial and industrial	470	280,960		(7,879		)	395	257,720		(2,923		)
Commercial real estate:
Interest rate reduction	—	—		—			1	84		—
Amortization or maturity date change	43	56,290		(815		)	60	49,812		(1,282		)
Other	—	—		—			4	315		16
Total commercial real estate:	43	56,290		(815		)	65	50,211		(1,266		)
Automobile:
Interest rate reduction	19	236		6			7	106		7
Amortization or maturity date change	811	7,154		178			707	6,564		422
Chapter 7 bankruptcy	438	3,316		47			561	4,544		229
Other	—	—		—			—	—		—
Total Automobile	1,268	10,706		231			1,275	11,214		658
Home equity:
Interest rate reduction	17	1,068		13			29	2,011		93
Amortization or maturity date change	241	13,868		(1,428		)	356	18,291		(2,018		)
Chapter 7 bankruptcy	164	6,036		1,402			145	5,711		1,000
Other	70	4,241		(326		)	—	—		—
Total Home equity	492	25,213		(339		)	530	26,013		(925		)
Residential mortgage:
Interest rate reduction	2	110		(9		)	10	1,061		(15		)
Amortization or maturity date change	180	19,367		(489		)	200	21,400		(997		)
Chapter 7 bankruptcy	49	4,672		(137		)	23	2,683		21
Other	21	2,384		17			1	164		—
Total Residential mortgage	252	26,533		(618		)	234	25,308		(991		)
RV and marine finance:
Interest rate reduction	—	—		—			—	—		—
Amortization or maturity date change	24	626		16			—	—		—
Chapter 7 bankruptcy	49	754		10			—	—		—
Other	—	—		—			—	—		—
Total RV and marine finance	73	1,380		26			—	—		—
Other consumer:
Interest rate reduction	1	78		2			—	—		—
Amortization or maturity date change	4	288		7			5	559		24
Chapter 7 bankruptcy	3	12		—			7	66		7
Other	—	—		—			—	—		—
Total Other consumer	8	378		9			12	625		31
Total new troubled debt restructurings	2,606	$	401,460	$	(9,385	)	2,511	$	371,091	$	(5,416	)

(1) TDRs may include multiple concessions and the disclosure classifications are based on the primary concession provided to the borrower.

(2)Amount represents the financial impact via provision for loan and lease losses as a result of the modificatiPledged Loans and Leases

At June 30, 2017, the Bank has access to the Federal Reserve’s discount window and advances from the FHLB – Cincinnati. As of June 30, 2017, these borrowings and advances are secured by $30.4 billion of loans and securities.

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AVAILABLE-FOR-SALE AND OTHER SECURITIES

6 Months Ended

Jun. 30, 2017

Investments, Debt and Equity Securities [Abstract]

AVAILABLE-FOR-SALE AND OTHER SECURITIES

AVAILABLE-FOR-SALE AND OTHER SECURITIES

Listed below are the contractual maturities of available-for-sale and other securities at June 30, 2017 and December 31, 2016:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
U.S. Treasury, Federal agency, and other agency securities:
U.S. Treasury:
1 year or less	$	10,139	$	10,139	$	4,978	$	4,988
After 1 year through 5 years	502		505		502		509
After 5 years through 10 years	—		—		—		—
After 10 years	—		—		—		—
Total U.S. Treasury	10,641		10,644		5,480		5,497
Federal agencies: mortgage-backed securities:
1 year or less	—		—		—		—
After 1 year through 5 years	28,085		27,891		46,591		46,762
After 5 years through 10 years	200,334		199,224		173,941		176,404
After 10 years	10,536,086		10,396,940		10,630,929		10,450,176
Total Federal agencies: mortgage-backed securities	10,764,505		10,624,055		10,851,461		10,673,342
Other agencies:
1 year or less	4,103		4,142		4,302		4,367
After 1 year through 5 years	9,498		9,647		5,092		5,247
After 5 years through 10 years	86,049		86,502		63,618		63,928
After 10 years	—		—		—		—
Total other agencies	99,650		100,291		73,012		73,542
Total U.S. Treasury, Federal agency, and other agency securities	10,874,796		10,734,990		10,929,953		10,752,381
Municipal securities:
1 year or less	120,216		121,345		169,636		166,887
After 1 year through 5 years	1,113,974		1,123,450		933,893		933,903
After 5 years through 10 years	1,493,652		1,508,930		1,463,459		1,464,583
After 10 years	555,096		558,775		693,440		684,684
Total municipal securities	3,282,938		3,312,500		3,260,428		3,250,057
Asset-backed securities:
1 year or less	—		—		—		—
After 1 year through 5 years	80,018		80,177		80,700		80,560
After 5 years through 10 years	144,969		146,256		223,352		224,565
After 10 years	389,154		368,366		520,072		488,356
Total asset-backed securities	614,141		594,799		824,124		793,481
Corporate debt:
1 year or less	3,238		3,268		43,223		43,603
After 1 year through 5 years	64,369		65,808		78,430		80,196
After 5 years through 10 years	49,546		51,878		32,523		32,865
After 10 years	21,386		23,081		40,361		42,019
Total corporate debt	138,539		144,035		194,537		198,683
Other:
1 year or less	3,151		3,142		1,650		1,650
After 1 year through 5 years	800		790		2,302		2,283
After 5 years through 10 years	—		—		—		—
After 10 years	94		94		10		10
Nonmarketable equity securities	585,472		585,471		547,704		547,704
Mutual funds	11,184		11,184		15,286		15,286
Marketable equity securities	861		1,301		861		1,302
Total other	601,562		601,982		567,813		568,235
Total available-for-sale and other securities	$	15,511,976	$	15,388,306	$	15,776,855	$	15,562,837

Other securities at June 30, 2017 and December 31, 2016 include nonmarketable equity securities of $287 million and $249 million of stock issued by the FHLB and $298 million and $299 million of Federal Reserve Bank stock, respectively. Non-marketable equity securities are recorded at amortized cost. Other securities also include Mutual funds and marketable equity securities.

The following tables provide amortized cost, fair value, and gross unrealized gains and losses recognized in OCI by investment category at June 30, 2017 and December 31, 2016:

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
June 30, 2017
U.S. Treasury	$	10,641	$	3	$	—		$	10,644
Federal agencies:
Mortgage-backed securities	10,764,505		8,652		(149,102		)	10,624,055
Other agencies	99,650		689		(48		)	100,291
Total U.S. Treasury, Federal agency securities	10,874,796		9,344		(149,150		)	10,734,990
Municipal securities	3,282,938		47,711		(18,149		)	3,312,500
Asset-backed securities	614,141		2,256		(21,598		)	594,799
Corporate debt	138,539		5,500		(4		)	144,035
Other securities	601,562		439		(19		)	601,982
Total available-for-sale and other securities	$	15,511,976	$	65,250	$	(188,920	)	$	15,388,306

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
December 31, 2016
U.S. Treasury	$	5,480	$	17	$	—		$	5,497
Federal agencies:
Mortgage-backed securities	10,851,461		12,548		(190,667		)	10,673,342
Other agencies	73,012		536		(6		)	73,542
Total U.S. Treasury, Federal agency securities	10,929,953		13,101		(190,673		)	10,752,381
Municipal securities	3,260,428		28,431		(38,802		)	3,250,057
Asset-backed securities	824,124		1,492		(32,135		)	793,481
Corporate debt	194,537		4,161		(15		)	198,683
Other securities	567,813		441		(19		)	568,235
Total available-for-sale and other securities	$	15,776,855	$	47,626	$	(261,644	)	$	15,562,837

The following tables provide detail on investment securities with unrealized gross losses aggregated by investment category and the length of time the individual securities have been in a continuous loss position, at June 30, 2017 and December 31, 2016:

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
June 30, 2017
Federal agencies:
Mortgage-backed securities	$	8,879,526	$	(147,900	)	$	42,504	$	(1,202	)	$	8,922,030	$	(149,102	)
Other agencies	12,793		(48		)	—		—			12,793		(48		)
Total Federal agency securities	8,892,319		(147,948		)	42,504		(1,202		)	8,934,823		(149,150		)
Municipal securities	702,379		(11,895		)	241,487		(6,254		)	943,866		(18,149		)
Asset-backed securities	177,834		(1,348		)	173,808		(20,250		)	351,642		(21,598		)
Corporate debt	595		(4		)	200		—			795		(4		)
Other securities	790		(10		)	1,491		(9		)	2,281		(19		)
Total temporarily impaired securities	$	9,773,917	$	(161,205	)	$	459,490	$	(27,715	)	$	10,233,407	$	(188,920	)

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
December 31, 2016
Federal agencies:
Mortgage-backed securities	$	8,908,470	$	(189,318	)	$	41,706	$	(1,349	)	$	8,950,176	$	(190,667	)
Other agencies	924		(6		)	—		—			924		(6		)
Total Federal agency securities	8,909,394		(189,324		)	41,706		(1,349		)	8,951,100		(190,673		)
Municipal securities	1,412,152		(29,175		)	272,292		(9,627		)	1,684,444		(38,802		)
Asset-backed securities	361,185		(3,043		)	178,924		(29,092		)	540,109		(32,135		)
Corporate debt	3,567		(15		)	200		—			3,767		(15		)
Other securities	790		(11		)	1,492		(8		)	2,282		(19		)
Total temporarily impaired securities	$	10,687,088	$	(221,568	)	$	494,614	$	(40,076	)	$	11,181,702	$	(261,644	)

At June 30, 2017, the carrying value of investment securities pledged to secure public and trust deposits, trading account liabilities, U.S. Treasury demand notes, and security repurchase agreements totaled $5.4 billion. There were no securities of a single issuer, which are not governmental or government-sponsored, that exceeded 10% of shareholders’ equity at June 30, 2017.

The following table is a summary of realized securities gains and losses for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Gross gains on sales of securities	$	3,814		$	3,391		$	4,359		$	3,391
Gross (losses) on sales of securities	(120		)	(2,659		)	(649		)	(2,659		)
Net gain on sales of securities	$	3,694		$	732		$	3,710		$	732
OTTI recognized in earnings	(3,559		)	(76		)	(3,583		)	(76		)
Net security gains (losses)	$	135		$	656		$	127		$	656

Security Impairment

Huntington evaluates the available-for-sale securities portfolio on a quarterly basis for impairment and conducts a comprehensive security-level assessment on all available-for-sale securities. Impairment exists when the present value of the expected cash flows are not sufficient to recover the entire amortized cost basis at the balance sheet date. Under these circumstances, any credit impairment would be recognized in earnings. At the end of the 2017 second quarter, Huntington changed its intent from able and willing to hold to sell sometime in the near future prior to final maturity for the two Reg Diversified CDO securities. Related to this change in intent, Huntington estimated the fair value of these bonds by obtaining bids. As a result of this analysis, Huntington recognized $3.6 million of OTTI on these two securities. For all other securities, Huntington does not intend to sell, nor does it believe it will be required to sell these securities until the amortized cost is recovered, which may be maturity.

The highest risk segment in our investment portfolio is the trust preferred CDO securities which are in the asset-backed securities portfolio. This portfolio is in run off, and the Company has not purchased these types of securities since 2005. The fair values of the CDO assets have been impacted by various market conditions. The unrealized losses are primarily the result of wider liquidity spreads on asset-backed securities and the longer expected average lives of the trust-preferred CDO securities, due to changes in the expectations of when the underlying securities will be repaid.

Collateralized Debt Obligations are backed by a pool of debt securities issued by financial institutions. The collateral generally consists of trust-preferred securities and subordinated debt securities issued by banks, bank holding companies, and insurance companies. Many collateral issuers have the option of deferring interest payments on their debt for up to five years. A full cash flow analysis is used to estimate fair values and assess impairment for each security within this portfolio. A third party pricing specialist with direct industry experience in pooled-trust-preferred security evaluations is engaged to provide assistance estimating the fair value and expected cash flows on this portfolio. The full cash flow analysis is completed by evaluating the relevant credit and structural aspects of each pooled-trust-preferred security in the portfolio, including collateral performance projections for each piece of collateral in the security and terms of the security’s structure. The credit review includes an analysis of profitability, credit quality, operating efficiency, leverage, and liquidity using available financial and regulatory information for each underlying collateral issuer. The analysis also includes a review of historical industry default data, current / near-term operating conditions, and the impact of macroeconomic and regulatory changes.  Using the results of the analysis, the Company estimates appropriate default and recovery probabilities for each piece of collateral then estimates the expected cash flows for each security. The fair value of each security is obtained by discounting the expected cash flows at a market discount rate. The market discount rate is determined by reference to yields observed in the market for similarly rated collateralized debt obligations, specifically high-yield collateralized loan obligations. The relatively high market discount rate is reflective of the uncertainty of the cash flows and illiquid nature of these securities. The large differential between the fair value and amortized cost of some of the securities reflects the high market discount rate and the expectation that the majority of the cash flows will not be received until near the final maturity of the security (the final maturities range from 2032 to 2035).

The following table summarizes the relevant characteristics of the Company's CDO securities portfolio, which are included in asset-backed securities, at June 30, 2017. Each security is part of a pool of issuers and supports a more senior tranche of securities except for the MM Comm III securities which are the most senior class.

Collateralized Debt Obligation Securities

(dollar amounts in thousands)

Deal Name	Par Value		Amortized Cost		Fair Value		Unrealized Loss (2)			Lowest Credit Rating (3)	# of Issuers Currently Performing/ Remaining (4)	Actual Deferrals and Defaults as a % of Original Collateral	Expected Defaults as a % of Remaining Performing Collateral	Excess Subordination (5)
MM Comm III	4,509		4,308		3,581		(727		)	BB+	5/8	5	5	39
Pre TSL IX (1)	5,000		3,955		3,275		(680		)	C	27/37	16	8	11
Pre TSL XI (1)	25,000		19,239		15,867		(3,372		)	C	42/51	14	8	14
Reg Diversified	25,500		510		510		—			D	21/36	32	8	—
Tropic III	31,000		31,000		19,342		(11,658		)	BB	27/36	16	7	41
Total at June 30, 2017	$	91,009	$	59,012	$	42,575	$	(16,437	)
Total at December 31, 2016	$	137,197	$	101,210	$	76,003	$	(25,207	)

(1) Security was determined to have OTTI. As such, the amortized cost is net of recorded credit impairment.

(2) The majority of securities have been in a continuous loss position for 12 months or longer.

(3) For purposes of comparability, the lowest credit rating expressed is equivalent to Fitch ratings even where the lowest rating is based on another nationally recognized credit rating agency.

(4) Includes both banks and/or insurance companies.

(5) Excess subordination percentage represents the additional defaults in excess of both current and projected defaults that the CDO can absorb before the bond experiences credit impairment. Excess subordinated percentage is calculated by (a) determining what percentage of defaults a deal can experience before the bond has credit impairment, and (b) subtracting from this default breakage percentage both total current and expected future default percentages.

For the three-month and six-month periods ended June 30, 2017 and 2016, the following table summarizes by security type the total OTTI losses recognized in the Unaudited Condensed Consolidated Statements of Income for securities evaluated for impairment as described above.

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Available-for-sale and other securities:
Collateralized Debt Obligations	$	3,559	$	—	$	3,559	$	—
Municipal Securities	—		76		24		76
Total available-for-sale and other securities	$	3,559	$	76	$	3,583	$	76

The following table presents the OTTI recognized in earnings on debt securities held by Huntington for the three-month and six-month periods ended June 30, 2017 and 2016 as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016			2017			2016
Balance, beginning of period	$	7,262	$	18,368		$	11,796		$	18,368
Reductions from sales	—		(8,613		)	(4,558		)	(8,613		)
Additional credit losses	3,559		76			3,583			76
Balance, end of period	$	10,821	$	9,831		$	10,821		$	9,831

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HELD-TO-MATURITY SECURITIES

6 Months Ended

Jun. 30, 2017

Held-to-maturity Securities [Abstract]

HELD-TO-MATURITY SECURITIES

HELD-TO-MATURITY SECURITIES

These are debt securities that Huntington has the intent and ability to hold until maturity. The debt securities are carried at amortized cost and adjusted for amortization of premiums and accretion of discounts using the interest method.

During the 2017 second quarter, Huntington transferred $1.0 billion of mortgage-backed and other agency securities from the available-for-sale securities portfolio to the held-to-maturity securities portfolio. The securities were reclassified at fair value at the date of transfer. At the time of the transfer, $13.5 million of unrealized net losses were recognized in OCI. The amounts in OCI will be recognized in earnings over the remaining life of the securities as an offset to the adjustment of yield in a manner consistent with the amortization of the premium on the same transferred securities, resulting in an immaterial impact on net income.

Listed below are the contractual maturities of held-to-maturity securities at June 30, 2017 and December 31, 2016:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Federal agencies: mortgage-backed securities:
1 year or less	$	—	$	—	$	—	$	—
After 1 year through 5 years	—		—		—		—
After 5 years through 10 years	70,527		70,355		41,261		40,791
After 10 years	7,634,775		7,616,513		7,157,083		7,139,943
Total Federal agencies: mortgage-backed securities	7,705,302		7,686,868		7,198,344		7,180,734
Other agencies:
1 year or less	—		—		—		—
After 1 year through 5 years	—		—		—		—
After 5 years through 10 years	376,837		376,750		398,341		399,452
After 10 years	191,592		190,149		204,083		201,180
Total other agencies	568,429		566,899		602,424		600,632
Total U.S. Government backed agencies	8,273,731		8,253,767		7,800,768		7,781,366
Municipal securities:
1 year or less	—		—		—		—
After 1 year through 5 years	—		—		—		—
After 5 years through 10 years	—		—		—		—
After 10 years	5,846		5,635		6,171		5,902
Total municipal securities	5,846		5,635		6,171		5,902
Total held-to-maturity securities	$	8,279,577	$	8,259,402	$	7,806,939	$	7,787,268

The following table provides amortized cost, gross unrealized gains and losses, and fair value by investment category at June 30, 2017 and December 31, 2016:

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
June 30, 2017
Federal agencies:
Mortgage-backed securities	$	7,705,302	$	17,950	$	(36,384	)	$	7,686,868
Other agencies	568,429		1,374		(2,904		)	566,899
Total U.S. Government backed agencies	8,273,731		19,324		(39,288		)	8,253,767
Municipal securities	5,846		—		(211		)	5,635
Total held-to-maturity securities	$	8,279,577	$	19,324	$	(39,499	)	$	8,259,402

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
December 31, 2016
Federal agencies:
Mortgage-backed securities	$	7,198,344	$	20,883	$	(38,493	)	$	7,180,734
Other agencies	602,424		1,690		(3,482		)	600,632
Total U.S. Government backed agencies	7,800,768		22,573		(41,975		)	7,781,366
Municipal securities	6,171		—		(269		)	5,902
Total held-to-maturity securities	$	7,806,939	$	22,573	$	(42,244	)	$	7,787,268

The following tables provide detail on held-to-maturity securities with unrealized gross losses aggregated by investment category and the length of time the individual securities have been in a continuous loss position, at June 30, 2017 and December 31, 2016:

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
June 30, 2017
Federal agencies:
Mortgage-backed securities	$	4,606,283	$	(31,348	)	$	160,437	$	(5,036	)	$	4,766,720	$	(36,384	)
Other agencies	375,023		(2,904		)	—		—			375,023		(2,904		)
Total U.S. Government backed securities	4,981,306		(34,252		)	160,437		(5,036		)	5,141,743		(39,288		)
Municipal securities	5,635		(211		)	—		—			5,635		(211		)
Total temporarily impaired securities	$	4,986,941	$	(34,463	)	$	160,437	$	(5,036	)	$	5,147,378	$	(39,499	)

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
December 31, 2016
Federal agencies:
Mortgage-backed securities	$	2,855,360	$	(31,470	)	$	186,226	$	(7,023	)	$	3,041,586	$	(38,493	)
Other agencies	413,207		(3,482		)	—		—			413,207		(3,482		)
Total U.S. Government backed securities	3,268,567		(34,952		)	186,226		(7,023		)	3,454,793		(41,975		)
Municipal securities	5,902		(269		)	—		—			5,902		(269		)
Total temporarily impaired securities	$	3,274,469	$	(35,221	)	$	186,226	$	(7,023	)	$	3,460,695	$	(42,244	)

Security Impairment

Huntington evaluates the held-to-maturity securities portfolio on a quarterly basis for impairment. Impairment exists when the present value of the expected cash flows is not sufficient to recover the entire amortized cost basis at the balance sheet date. Under these circumstances, any impairment would be recognized in earnings. As of June 30, 2017, Management has evaluated held-to-maturity securities with unrealized losses for impairment and concluded no OTTI is required.

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LOAN SALES AND SECURITIZATIONS

6 Months Ended

Jun. 30, 2017

Transfers and Servicing [Abstract]

LOAN SALES AND SECURITIZATIONS

LOAN SALES AND SECURITIZATIONS

Residential Mortgage Loans

The following table summarizes activity relating to residential mortgage loans sold with servicing retained for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Residential mortgage loans sold with servicing retained	$	798,399	$	715,589	$	1,645,752	$	1,348,055
Pretax gains resulting from above loan sales (1)	16,943		18,618		39,133		32,731

(1) Recorded in mortgage banking income.

A MSR is established only when the servicing is contractually separated from the underlying mortgage loans by sale or securitization of the loans with servicing rights retained. At initial recognition, the MSR asset is established at its fair value using assumptions consistent with assumptions used to estimate the fair value of existing MSRs. Subsequent to the initial recognition, MSRs may be measured using either the fair value method or the amortization method. The election of the fair value method or amortization method is made at the time each servicing class is established. Subsequently, servicing rights are accounted for based on the methodology chosen for each respective servicing class. Any increase or decrease in the fair value of MSRs carried under the fair value method, as well as amortization or impairment of MSRs recorded using the amortization method, during the period is recorded as an increase or decrease in mortgage banking income, which is reflected in noninterest income in the Unaudited Condensed Consolidated Statements of Income.

The following tables summarize the changes in MSRs recorded using either the fair value method or the amortization method for the three-month and six-month periods ended June 30, 2017 and 2016:

Fair Value Method:	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Fair value, beginning of period	$	13,307		$	14,819		$	13,747		$	17,585
Change in fair value during the period due to:
Time decay (1)	(217		)	(245		)	(448		)	(518		)
Payoffs (2)	(217		)	(465		)	(581		)	(969		)
Changes in valuation inputs or assumptions (3)	(345		)	(1,004		)	(190		)	(2,993		)
Fair value, end of period:	$	12,528		$	13,105		$	12,528		$	13,105
Weighted-average life (years)	5.7			5.1			5.7			5.1

(1) Represents decrease in value due to passage of time, including the impact from both regularly scheduled loan principal payments and partial loan paydowns.

(2) Represents decrease in value associated with loans that paid off during the period.

(3) Represents change in value resulting primarily from market-driven changes in interest rates and prepayment speeds.

Amortization Method:	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Carrying value, beginning of period	$	177,812		$	127,275		$	172,466		$	143,133
New servicing assets created	8,218			7,277			17,853			13,386
Impairment (charge) / recovery	(2,806		)	(7,295		)	(1,007		)	(23,635		)
Amortization and other	(6,733		)	(5,965		)	(12,821		)	(11,592		)
Carrying value, end of period	$	176,491		$	121,292		$	176,491		$	121,292
Fair value, end of period	$	177,138		$	121,464		$	177,138		$	121,464
Weighted-average life (years)	7.1			6.1			7.1			6.1

MSRs do not trade in an active, open market with readily observable prices. While sales of MSRs occur, the precise terms and conditions are typically not readily available. Therefore, the fair value of MSRs is estimated using a discounted future cash flow model. The model considers portfolio characteristics, contractually specified servicing fees and assumptions related to prepayments, delinquency rates, late charges, other ancillary revenues, costs to service, and other economic factors. Changes in the assumptions used may have a significant impact on the valuation of MSRs.

MSR values are sensitive to movements in interest rates as expected future net servicing income depends on the projected outstanding principal balances of the underlying loans, which can be greatly impacted by the level of prepayments. Huntington hedges the value of certain MSRs against changes in value attributable to changes in interest rates using a combination of derivative instruments and trading securities.

For MSRs under the fair value method, a summary of key assumptions and the sensitivity of the MSR value at June 30, 2017 and December 31, 2016, to changes in these assumptions follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	11.40	%	$	(476	)	$	(919	)	10.90	%	$	(501	)	$	(970	)
Spread over forward interest rate swap rates	876 bps		(463		)	(874		)	536 bps		(454		)	(879		)

For MSRs under the amortization method, a summary of key assumptions and the sensitivity of the MSR value at June 30, 2017 and December 31, 2016, to changes in these assumptions follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	8.20	%	$	(4,731	)	$	(9,191	)	7.80	%	$	(4,510	)	$	(8,763	)
Spread over forward interest rate swap rates	1,084 bps		(6,566		)	(12,374		)	1,173 bps		(5,259		)	(10,195		)

Total servicing, late and other ancillary fees included in mortgage banking income amounted to $14 million and $12 million for the three-month periods ended June 30, 2017 and 2016, respectively. For the six-month periods ended June 30, 2017 and 2016, total net servicing fees included in mortgage banking income were $28 million and $24 million, respectively. The unpaid principal balance of residential mortgage loans serviced for third parties was $19.1 billion and $18.9 billion at June 30, 2017 and December 31, 2016, respectively.

Automobile Loans

Huntington has retained servicing responsibilities on sold automobile loans and receives annual servicing fees and other ancillary fees on the outstanding loan balances. Automobile loan servicing rights are accounted for using the amortization method. A servicing asset is established at fair value at the time of the sale. The servicing asset is then amortized against servicing income. Impairment, if any, is recognized when carrying value exceeds the fair value as determined by calculating the present value of expected net future cash flows. The primary risk characteristic for measuring servicing assets is payoff rates of the underlying loan pools. Valuation calculations rely on the predicted payoff assumption and, if actual payoff is quicker than expected, then future value would be impaired.

Changes in the carrying value of automobile loan servicing rights for the three-month and six-month periods ended June 30, 2017 and 2016, and the fair value at the end of each period were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Carrying value, beginning of period	$	15,159		$	7,029		$	18,285		$	8,771
Amortization and other	(2,635		)	(1,571		)	(5,761		)	(3,313		)
Carrying value, end of period	$	12,524		$	5,458		$	12,524		$	5,458
Fair value, end of period	$	12,571		$	5,551		$	12,571		$	5,551
Weighted-average contractual life (years)	3.8			3.0			3.8			3.0

A summary of key assumptions and the sensitivity of the automobile loan servicing rights value to changes in these assumptions at June 30, 2017 and December 31, 2016 follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	19.91	%	$	(688	)	$	(1,391	)	19.98	%	$	(1,047	)	$	(2,026	)
Spread over forward interest rate swap rates	500 bps		(17		)	(34		)	500 bps		(26		)	(53		)

Servicing income amounted to $5 million and $2 million for the three-month periods ending June 30, 2017, and 2016, respectively. For the six-month periods ended June 30, 2017 and 2016, total servicing income was $10 million and $5 million, respectively. The unpaid principal balance of automobile loans serviced for third parties was $1.3 billion and $1.7 billion at June 30, 2017 and December 31, 2016, respectively.

Small Business Administration (SBA) Portfolio

The following table summarizes activity relating to SBA loans sold with servicing retained for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
SBA loans sold with servicing retained	$	87,705	$	58,629	$	165,377	$	104,518
Pretax gains resulting from above loan sales (1)	7,109		4,662		12,927		8,183

(1) Recorded in gain on sale of loans.

Huntington has retained servicing responsibilities on sold SBA loans and receives annual servicing fees on the outstanding loan balances. SBA loan servicing rights are accounted for using the amortization method. A servicing asset is established at fair value at the time of the sale using a discounted future cash flow model. The servicing asset is then amortized against servicing income. Impairment, if any, is recognized when carrying value exceeds the fair value as determined by calculating the present value of expected net future cash flows.

The following tables summarize the changes in the carrying value of the servicing asset for the three-month and six-month periods ended June 30, 2017 and 2016, and the fair value at the end of each period were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Carrying value, beginning of period	$	21,399		$	19,526		$	21,080		$	19,747
New servicing assets created	4,121			1,868			5,596			3,380
Amortization and other	(2,407		)	(1,782		)	(3,563		)	(3,515		)
Carrying value, end of period	$	23,113		$	19,612		$	23,113		$	19,612
Fair value, end of period	$	26,853		$	23,823		$	26,853		$	23,823
Weighted-average life (years)	3.3			3.3			3.3			3.3

A summary of key assumptions and the sensitivity of the SBA loan servicing rights value to changes in these assumptions at June 30, 2017 and December 31, 2016 follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	7.50	%	$	(363	)	$	(721	)	7.40	%	$	(324	)	$	(644	)
Discount rate	15.00		(721		)	(1,411		)	15.00		(1,270		)	(1,870		)

Servicing income amounted to $3 million and $2 million for the three-month periods ending June 30, 2017, and 2016, respectively. For the six-month periods ended June 30, 2017 and 2016, total servicing income was $5 million and $5 million, respectively. The unpaid principal balance of SBA loans serviced for third parties was $1.2 billion and $1.1 billion at June 30, 2017 and December 31, 2016, respectively.

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LONG-TERM DEBT

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

LONG-TERM DEBT

LONG-TERM DEBT

In March 2017, the Bank issued $0.7 billion of senior notes at 99.994% of face value. The senior notes mature on March 10, 2020 and have a fixed coupon rate of 2.375%. The senior notes may be redeemed one month prior to the maturity date at 100% of principal plus accrued and unpaid interest. Also, in March 2017, the Bank issued $0.3 billion of senior notes at 100% of face value. The senior notes mature on March 10, 2020 and have a variable coupon rate of three month LIBOR + 51 basis points.

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OTHER COMPREHENSIVE INCOME

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

OTHER COMPREHENSIVE INCOME

OTHER COMPREHENSIVE INCOME

The components of other comprehensive income for the three-month and six-month periods ended June 30, 2017 and 2016, were as follows:

	Three Months Ended June 30, 2017
	Tax (Expense)
(dollar amounts in thousands)	Pretax		Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	2,478	$	(876	)	$	1,602
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	53,285		(18,811		)	34,474
Less: Reclassification adjustment for net losses (gains) included in net income	3,988		(1,410		)	2,578
Net change in unrealized holding gains (losses) on available-for-sale debt securities	59,751		(21,097		)	38,654
Net change in unrealized holding gains (losses) on available-for-sale equity securities	—		—			—
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	1,220		(427		)	793
Less: Reclassification adjustment for net (gains) losses included in net income	427		(150		)	277
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	1,647		(577		)	1,070
Net change in pension and other post-retirement obligations	1,198		(419		)	779
Total other comprehensive income (loss)	$	62,596	$	(22,093	)	$	40,503

	Three Months Ended June 30, 2016
	Tax (Expense)
(dollar amounts in thousands)	Pretax			Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	1,032		$	(365	)	$	667
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	50,278			(18,234		)	32,044
Less: Reclassification adjustment for net losses (gains) included in net income	(2,294		)	811			(1,483		)
Net change in unrealized holding gains (losses) on available-for-sale debt securities	49,016			(17,788		)	31,228
Net change in unrealized holding gains (losses) on available-for-sale equity securities	66			(24		)	42
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	1,989			(696		)	1,293
Less: Reclassification adjustment for net (gains) losses included in net income	(248		)	89			(159		)
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	1,741			(607		)	1,134
Net change in pension and other post-retirement obligations	1,293			(453		)	840
Total other comprehensive income (loss)	$	52,116		$	(18,872	)	$	33,244

	Six Months Ended June 30, 2017
	Tax (expense)
(dollar amounts in thousands)	Pretax			Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	3,288		$	(1,162	)	$	2,126
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	62,282			(21,607		)	40,675
Less: Reclassification adjustment for net losses (gains) included in net income	9,862			(3,487		)	6,375
Net change in unrealized holding gains (losses) on available-for-sale debt securities	75,432			(26,256		)	49,176
Net change in unrealized holding gains (losses) on available-for-sale equity securities	—			—			—
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	(611		)	214			(397		)
Less: Reclassification adjustment for net (gains) losses included in net income	987			(346		)	641
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	376			(132		)	244
Net change in pension and other post-retirement obligations	1,906			(667		)	1,239
Total other comprehensive income (loss)	$	77,714		$	(27,055	)	$	50,659

	Six Months Ended June 30, 2016
	Tax (expense)
(dollar amounts in thousands)	Pretax			Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	(2,602	)	$	920		$	(1,682	)
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	130,746			(46,919		)	83,827
Less: Reclassification adjustment for net losses (gains) included in net income	(2,758		)	975			(1,783		)
Net change in unrealized holding gains (losses) on available-for-sale debt securities	125,386			(45,024		)	80,362
Net change in unrealized holding gains (losses) on available-for-sale equity securities	170			(60		)	110
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	16,218			(5,676		)	10,542
Less: Reclassification adjustment for net (gains) losses included in net income	(892		)	313			(579		)
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	15,326			(5,363		)	9,963
Net change in pension and other post-retirement obligations	2,586			(905		)	1,681
Total other comprehensive income (loss)	$	143,468		$	(51,352	)	$	92,116

The following table presents activity in accumulated other comprehensive income (loss), net of tax, for the six-month periods ended June 30, 2017 and 2016:

(dollar amounts in thousands)	Unrealized gains and (losses) on debt securities (1)			Unrealized gains and (losses) on equity securities		Unrealized gains and (losses) on cash flow hedging derivatives			Unrealized gains (losses) for pension and other post- retirement obligations			Total
December 31, 2015	$	8,361		$	176	$	(3,948	)	$	(230,747	)	$	(226,158	)
Other comprehensive income before reclassifications	82,145			110		10,542			—			92,797
Amounts reclassified from accumulated OCI to earnings	(1,783		)	—		(579		)	1,681			(681		)
Period change	80,362			110		9,963			1,681			92,116
June 30, 2016	$	88,723		$	286	$	6,015		$	(229,066	)	$	(134,042	)
December 31, 2016	$	(192,764	)	$	287	$	(2,634	)	$	(205,905	)	$	(401,016	)
Other comprehensive income before reclassifications	42,801			—		(397		)	—			42,404
Amounts reclassified from accumulated OCI to earnings	6,375			—		641			1,239			8,255
Period change	49,176			—		244			1,239			50,659
June 30, 2017	$	(143,588	)	$	287	$	(2,390	)	$	(204,666	)	$	(350,357	)

(1) Amounts at June 30, 2017 and December 31, 2016 include $98 million and $82 million, respectively, of net unrealized gains on securities transferred from the available-for-sale securities portfolio to the held-to-maturity securities portfolio. The net unrealized gains will be recognized in earnings over the remaining life of the security using the effective interest method.

The following table presents the reclassification adjustments out of accumulated OCI included in net income and the impacted line items as listed on the Unaudited Condensed Consolidated Statements of Income for the three-month and six-month periods ended June 30, 2017 and 2016:

	Reclassifications out of accumulated OCI
Accumulated OCI components	Amounts reclassified from accumulated OCI						Location of net gain (loss) reclassified from accumulated OCI into earnings
	Three Months Ended
(dollar amounts in thousands)	June 30, 2017			June 30, 2016
Gains (losses) on debt securities:
Amortization of unrealized gains (losses)	$	(2,284	)	$	740		Interest income - held-to-maturity securities - taxable
Realized gain (loss) on sale of securities	1,855			1,630			Noninterest income - net gains (losses) on sale of securities
OTTI recorded	(3,559		)	(76		)	Noninterest income - net gains (losses) on sale of securities
	(3,988		)	2,294			Total before tax
	1,410			(811		)	Tax (expense) benefit
	$	(2,578	)	$	1,483		Net of tax
Gains (losses) on cash flow hedging relationships:
Interest rate contracts	$	(427	)	$	248		Interest income - loans and leases
Interest rate contracts	—			—			Noninterest income - other income
	(427		)	248			Total before tax
	150			(89		)	Tax (expense) benefit
	$	(277	)	$	159		Net of tax
Amortization of defined benefit pension and post-retirement items:
Actuarial gains (losses)	$	(1,690	)	$	(1,785	)	Noninterest expense - personnel costs
Prior service credit	492			492			Noninterest expense - personnel costs
	(1,198		)	(1,293		)	Total before tax
	419			453			Tax (expense) benefit
	$	(779	)	$	(840	)	Net of tax

	Reclassifications out of accumulated OCI
Accumulated OCI components	Amounts reclassified from accumulated OCI						Location of net gain (loss) reclassified from accumulated OCI into earnings
	Six Months Ended
(dollar amounts in thousands)	June 30, 2017			June 30, 2016
Gains (losses) on debt securities:
Amortization of unrealized gains (losses)	$	(5,890	)	$	1,204		Interest income - held-to-maturity securities - taxable
Realized gain (loss) on sale of securities	(389		)	1,630			Noninterest income - net gains (losses) on sale of securities
OTTI recorded	(3,583		)	(76		)	Noninterest income - net gains (losses) on sale of securities
	(9,862		)	2,758			Total before tax
	3,487			(975		)	Tax (expense) benefit
	$	(6,375	)	$	1,783		Net of tax
Gains (losses) on cash flow hedging relationships:
Interest rate contracts	$	(987	)	$	893		Interest income - loans and leases
Interest rate contracts	—			(1		)	Noninterest income - other income
	(987		)	892			Total before tax
	346			(313		)	Tax (expense) benefit
	$	(641	)	$	579		Net of tax
Amortization of defined benefit pension and post-retirement items:
Actuarial gains (losses)	$	(2,890	)	$	(3,570	)	Noninterest expense - personnel costs
Prior service credit	984			984			Noninterest expense - personnel costs
	(1,906		)	(2,586		)	Total before tax
	667			905			Tax (expense) benefit
	$	(1,239	)	$	(1,681	)	Net of tax

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EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

EARNINGS PER SHARE

EARNINGS PER SHARE

Basic earnings per share is the amount of earnings (adjusted for dividends declared on preferred stock) available to each share of common stock outstanding during the reporting period. Diluted earnings per share is the amount of earnings available to each share of common stock outstanding during the reporting period adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental shares issued for stock options, restricted stock units and awards, distributions from deferred compensation plans, and the conversion of the Company’s convertible preferred stock. Potentially dilutive common shares are excluded from the computation of diluted earnings per share in periods in which the effect would be antidilutive. For diluted earnings per share, net income available to common shares can be affected by the conversion of the Company’s convertible preferred stock. Where the effect of this conversion would be dilutive, net income available to common shareholders is adjusted by the associated preferred dividends and deemed dividend. The calculation of basic and diluted earnings per share for the three and six-month periods ended June 30, 2017 and 2016, was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands, except per share amounts)	2017			2016			2017			2016
Basic earnings per common share:
Net income	$	271,741		$	174,540		$	479,835		$	345,854
Preferred stock dividends	(18,889		)	(19,874		)	(37,767		)	(27,872		)
Net income available to common shareholders	$	252,852		$	154,666		$	442,068		$	317,982
Average common shares issued and outstanding	1,088,934			798,167			1,087,654			796,961
Basic earnings per common share	$	0.23		$	0.19		$	0.41		$	0.40
Diluted earnings per common share:
Net income available to common shareholders	$	252,852		$	154,666		$	442,068		$	317,982
Effect of assumed preferred stock conversion	—			—			—			—
Net income applicable to diluted earnings per share	$	252,852		$	154,666		$	442,068		$	317,982
Average common shares issued and outstanding	1,088,934			798,167			1,087,654			796,961
Dilutive potential common shares:
Stock options and restricted stock units and awards	16,329			9,785			17,734			10,085
Shares held in deferred compensation plans	3,108			2,282			3,030			2,178
Other	156			137			154			136
Dilutive potential common shares:	19,593			12,204			20,918			12,399
Total diluted average common shares issued and outstanding	1,108,527			810,371			1,108,572			809,360
Diluted earnings per common share	$	0.23		$	0.19		$	0.40		$	0.39

For the three-month periods ended June 30, 2017 and 2016, approximately 2.6 million and 4.7 million, respectively, of options to purchase shares of common stock were not included in the computation of diluted earnings per share because the effect would be antidilutive. For the six-month periods ended June 30, 2017 and 2016, approximately 1.8 million and 4.0 million, respectively, were not included.

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BENEFIT PLANS

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

BENEFIT PLANS

. BENEFIT PLANS

Huntington sponsors a non-contributory defined benefit pension plan covering substantially all employees hired or rehired prior to January 1, 2010. The plan, which was modified in 2013 and no longer accrues service benefits to participants, provides benefits based upon length of service and compensation levels. The funding policy of Huntington is to contribute an annual amount that is at least equal to the minimum funding requirements but not more than the amount deductible under the Internal Revenue Code. There is no required minimum contribution for 2017.

In addition, Huntington has an unfunded defined benefit post-retirement plan that provides certain healthcare and life insurance benefits to retired employees who have attained the age of 55 and have at least 10 years of vesting service under this plan.

As part of the FirstMerit acquisition, Huntington agreed to assume and honor all FirstMerit benefit plans. The FirstMerit Pension Plan was frozen for nonvested employees and closed to new entrants after December 31, 2006. Effective December 31, 2012, the FirstMerit Pension Plan was frozen for vested employees. Additionally, FirstMerit had a post-retirement benefit plan which provided medical and life insurance for retired employees.

For additional information on benefit plans, see the Benefit Plan footnote in our 2016 Form 10-K.

The following table shows the components of net periodic (benefit) cost for all plans:

	Pension Benefits								Post-Retirement Benefits
	Three Months Ended June 30,								Three Months Ended June 30,
(dollar amounts in thousands)	2017					2016			2017					2016
Service cost	$	640				$	1,025		$	21				$	—
Interest cost	7,478					6,748			99					54
Expected return on plan assets	(13,803		)			(10,224		)	—					—
Amortization of prior service cost	—					—			(492		)			(492		)
Amortization of (gain) loss	1,747					1,865			(54		)			(72		)
Settlements	2,500					3,400			—					—
Net periodic (benefit) cost	$	(1,438	)	(1	)	$	2,814		$	(426	)	(1	)	$	(510	)

(1) Includes expense associated with FirstMerit plans.

	Pension Benefits								Post-Retirement Benefits
	Six Months Ended June 30,								Six Months Ended June 30,
(dollar amounts in thousands)	2017					2016			2017					2016
Service cost	$	1,280				$	2,050		$	43				$	—
Interest cost	14,955					13,496			198					109
Expected return on plan assets	(27,606		)			(20,447		)	—					—
Amortization of prior service cost	—					—			(984		)			(984		)
Amortization of (gain) loss	3,494					3,729			(109		)			(144		)
Settlements	5,000					6,800			—					—
Net periodic (benefit) cost	$	(2,877	)	(1	)	$	5,628		$	(852	)	(1	)	$	(1,019	)

(1) Includes expense associated with FirstMerit plans.

Huntington has a defined contribution plan that is available to eligible employees. Huntington matches participant contributions, up to the first 4% of base pay that is contributed to the defined contribution plan. For 2016, a discretionary profit-sharing contribution equal to 1% of eligible participants’ 2016 base pay was awarded during the 2017 first quarter. Huntington's expense related to the defined contribution plans during the second quarter 2017 and 2016 was $11 million and $8 million, respectively. For the six-month periods ended June 30, 2017 and 2016, expense related to the defined contribution plans were $22 million and $16 million, respectively.

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FAIR VALUES OF ASSETS AND LIABILITIES

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

FAIR VALUES OF ASSETS AND LIABILITIES

See Note 18 “Fair Value of Assets and Liabilities” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2016 for a description of additional valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis. Assets and liabilities measured at fair value rarely transfer between Level 1 and Level 2 measurements. There were no such transfers during the three-month and six-month periods ended June 30, 2017 and 2016.

Assets and Liabilities measured at fair value on a recurring basis

Assets and liabilities measured at fair value on a recurring basis at June 30, 2017 and December 31, 2016 are summarized below:

	Fair Value Measurements at Reporting Date Using						Netting Adjustments (1)			June 30, 2017
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Assets
Loans held for sale	$	—	$	654,087	$	—	$	—		$	654,087
Loans held for investment	—		59,886		43,855		—			103,741
Trading account securities:
Federal agencies: Other agencies	—		6,868		—		—			6,868
Municipal securities	—		323		—		—			323
Other securities	86,560		1,016		—		—			87,576
	86,560		8,207		—		—			94,767
Available-for-sale and other securities:
U.S. Treasury securities	10,644		—		—		—			10,644
Federal agencies: Mortgage-backed	—		10,624,055		—		—			10,624,055
Federal agencies: Other agencies	—		100,291		—		—			100,291
Municipal securities	—		440,493		2,872,007		—			3,312,500
Asset-backed securities	—		552,224		42,575		—			594,799
Corporate debt	—		144,035		—		—			144,035
Other securities	12,485		4,026		—		—			16,511
	23,129		11,865,124		2,914,582		—			14,802,835
MSRs	—		—		12,528		—			12,528
Derivative assets	—		325,736		9,227		(144,951		)	190,012
Liabilities
Derivative liabilities	—		284,796		6,049		(212,487		)	78,358
Short-term borrowings	4,580		—		—		—			4,580

	Fair Value Measurements at Reporting Date Using						Netting Adjustments (1)			December 31, 2016
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Assets
Loans held for sale	$	—	$	438,224	$	—	$	—		$	438,224
Loans held for investment	—		34,439		47,880		—			82,319
Trading account securities:
Municipal securities	—		1,148		—		—			1,148
Other securities	132,147		—		—		—			132,147
	132,147		1,148		—		—			133,295
Available-for-sale and other securities:
U.S. Treasury securities	5,497		—		—		—			5,497
Federal agencies: Mortgage-backed	—		10,673,342		—		—			10,673,342
Federal agencies: Other agencies	—		73,542		—		—			73,542
Municipal securities	—		452,013		2,798,044		—			3,250,057
Asset-backed securities	—		717,478		76,003		—			793,481
Corporate debt	—		198,683		—		—			198,683
Other securities	16,588		3,943		—		—			20,531
	22,085		12,119,001		2,874,047		—			15,015,133
MSRs	—		—		13,747		—			13,747
Derivative assets	—		414,412		5,747		(181,940		)	238,219
Liabilities
Derivative liabilities	—		362,777		7,870		(272,361		)	98,286
Short-term borrowings	474		—		—		—			474

(1) Amounts represent the impact of legally enforceable master netting agreements that allow the Company to settle positive and negative positions and cash collateral held or placed with the same counterparties.

The tables below present a rollforward of the balance sheet amounts for the three-month and six-month periods ended June 30, 2017 and 2016, for financial instruments measured on a recurring basis and classified as Level 3. The classification of an item as Level 3 is based on the significance of the unobservable inputs to the overall fair value measurement. However, Level 3 measurements may also include observable components of value that can be validated externally. Accordingly, the gains and losses in the table below include changes in fair value due in part to observable factors that are part of the valuation methodology.

	Level 3 Fair Value Measurements Three Months Ended June 30, 2017
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	13,307		$	2,694		$	2,867,652		$	59,492		$	44,219
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(2,124		)	—			—			—
Total gains/losses for the period:
Included in earnings	(779		)	2,608			(1,180		)	(3,557		)	1,493
Included in OCI	—			—			12,419			5,598			—
Purchases/originations	—			—			114,944			—			—
Sales	—			—			—			(18,594		)	—
Repayments	—			—			—			—			(1,857		)
Issues	—			—			—			—			—
Settlements	—			—			(121,828		)	(364		)	—
Closing balance	$	12,528		$	3,178		$	2,872,007		$	42,575		$	43,855
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(779	)	$	2,608		$	12,419		$	5,598		$	—

	Level 3 Fair Value Measurements Three Months Ended June 30, 2016
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	14,819		$	10,347		$	2,281,743		$	94,329		$	1,216
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(2,508		)	—			—			—
Total gains/losses for the period:
Included in earnings	(1,714		)	4,912			—			2			—
Included in OCI	—			—			7,486			5,842			—
Purchases/originations	—			—			46,457			—			—
Sales	—			—			(36,657		)	(27,794		)	—
Repayments	—			—			—			—			(291		)
Issues	—			—			—			—			—
Settlements	—			—			(61,054		)	(1,000		)	—
Closing balance	$	13,105		$	12,751		$	2,237,975		$	71,379		$	925
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(1,714	)	$	4,912		$	—		$	2		$	—

(1) Transfers out of Level 3 represent the settlement value of the derivative instruments (i.e. interest rate lock agreements) that were transferred to loans held for sale, which are classified as Level 2.

	Level 3 Fair Value Measurements Six Months Ended June 30, 2017
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	13,747		$	(2,123	)	$	2,798,044		$	76,003		$	47,880
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(2,457		)	—			—			—
Total gains/losses for the period:
Included in earnings	(1,219		)	7,758			(2,975		)	(3,528		)	1,430
Included in OCI	—			—			32,894			8,769			—
Purchases/originations	—			—			247,609			—			—
Sales	—			—			—			(37,728		)	—
Repayments	—			—			—			—			(5,455		)
Issues	—			—			—			—			—
Settlements	—			—			(203,565		)	(941		)	—
Closing balance	$	12,528		$	3,178		$	2,872,007		$	42,575		$	43,855
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(1,219	)	$	7,758		$	32,894		$	8,769		$	—

	Level 3 Fair Value Measurements Six Months Ended June 30, 2016
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	17,585		$	6,056		$	2,095,551		$	100,337		$	1,748
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(3,423		)	—			—			—
Total gains/losses for the period:
Included in earnings	(4,480		)	10,118			—			2			—
Included in OCI	—			—			19,326			674			—
Purchases/originations	—			—			283,907			—			—
Sales	—			—			(36,657		)	(27,794		)	—
Repayments	—			—			—			—			(823		)
Issues	—			—			—			—			—
Settlements	—			—			(124,152		)	(1,840		)	—
Closing balance	$	13,105		$	12,751		$	2,237,975		$	71,379		$	925
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(4,480	)	$	10,218		$	—		$	2		$	—

(1) Transfers out of Level 3 represent the settlement value of the derivative instruments (i.e. interest rate lock agreements) that were transferred to loans held for sale, which are classified as Level 2.

The tables below summarize the classification of gains and losses due to changes in fair value, recorded in earnings for Level 3 assets and liabilities for the three-month and six-month periods ended June 30, 2017 and 2016:

	Level 3 Fair Value Measurements Three Months Ended June 30, 2017
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities			Asset- backed securities			Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(779	)	$	2,608	$	—		$	—		$	—
Securities gains (losses)	—			—		(1,180		)	(3,557		)	—
Interest and fee income	—			—		—			—			—
Noninterest income	—			—		—			—			1,493
Other expense	—			—		—			—			—
Total	$	(779	)	$	2,608	$	(1,180	)	$	(3,557	)	$	1,493

	Level 3 Fair Value Measurements Three Months Ended June 30, 2016
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities		Asset- backed securities		Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(1,714	)	$	4,912	$	—	$	—	$	—
Securities gains (losses)	—			—		—		—		—
Interest and fee income	—			—		—		—		—
Noninterest income	—			—		—		2		—
Other expense	—			—		—		—		—
Total	$	(1,714	)	$	4,912	$	—	$	2	$	—

	Level 3 Fair Value Measurements Six Months Ended June 30, 2017
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities			Asset- backed securities			Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(1,219	)	$	7,758	$	—		$	—		$	—
Securities gains (losses)	—			—		(2,975		)	(3,528		)	—
Interest and fee income	—			—		—			—			—
Noninterest income	—			—		—			—			1,430
Other expense	—			—		—			—			—
Total	$	(1,219	)	$	7,758	$	(2,975	)	$	(3,528	)	$	1,430

	Level 3 Fair Value Measurements Six Months Ended June 30, 2016
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities		Asset- backed securities		Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(4,480	)	$	10,118	$	—	$	—	$	—
Securities gains (losses)	—			—		—		—		—
Interest and fee income	—			—		—		—		—
Noninterest income	—			—		—		2		—
Other expense	—			—		—		—		—
Total	$	(4,480	)	$	10,118	$	—	$	2	$	—

Assets and liabilities under the fair value option

The following table presents the fair value and aggregate principal balance of certain assets and liabilities under the fair value option:

	June 30, 2017
	Total Loans							Loans that are 90 or more days past due
(dollar amounts in thousands)	Fair value carrying amount		Aggregate unpaid principal		Difference			Fair value carrying amount		Aggregate unpaid principal		Difference
Assets
Loans held for sale	$	654,087	$	628,684	$	25,403		$	72	$	72	$	—
Loans held for investment	103,741		113,114		(9,373		)	13,039		15,447		(2,408		)

	December 31, 2016
	Total Loans							Loans that are 90 or more days past due
(dollar amounts in thousands)	Fair value carrying amount		Aggregate unpaid principal		Difference			Fair value carrying amount		Aggregate unpaid principal		Difference
Assets
Loans held for sale	$	438,224	$	433,760	$	4,464		$	—	$	—	$	—
Loans held for investment	82,319		91,998		(9,679		)	8,408		11,082		(2,674		)

The following tables present the net gains (losses) from fair value changes for the three-month and six-month periods ended June 30, 2017 and 2016:

	Net gains (losses) from fair value changes				Net gains (losses) from fair value changes
	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Assets
Loans held for sale	$	4,551	$	8,870	$	13,616	$	13,519
Loans held for investment	1,493		—		1,430		—

Assets and Liabilities measured at fair value on a nonrecurring basis

Certain assets and liabilities may be required to be measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition. These assets and liabilities are not measured at fair value on an ongoing basis; however, they are subject to fair value adjustments in certain circumstances, such as when there is evidence of impairment. For the six months ended June 30, 2017, assets measured at fair value on a nonrecurring basis were as follows:

			Fair Value Measurements Using
(dollar amounts in thousands)	Fair Value		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Total Gains/(Losses) Six Months Ended June 30, 2017
MSRs	$	175,454	$	—	$	—	$	175,454	$	(1,006	)
Impaired loans	36,118		—		—		36,118		(3,123		)
Other real estate owned	43,816		—		—		43,816		1,742

MSRs accounted for under the amortization method are subject to nonrecurring fair value measurement when the fair value is lower than the carrying amount.

Periodically, Huntington records nonrecurring adjustments of collateral-dependent loans measured for impairment when establishing the ACL. Such amounts are generally based on the fair value of the underlying collateral supporting the loan. Appraisals are generally obtained to support the fair value of the collateral and incorporate measures such as recent sales prices for comparable properties and cost of construction. In cases where the carrying value exceeds the fair value of the collateral less cost to sell, an impairment charge is recognized.

Other real estate owned properties are included in accrued income and other assets and valued based on appraisals and third party price opinions, less estimated selling costs.

Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis

The table below presents quantitative information about the significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis at June 30, 2017 and December 31, 2016:

	Quantitative Information about Level 3 Fair Value Measurements at June 30, 2017
(dollar amounts in thousands)	Fair Value		Valuation Technique	Significant Unobservable Input	Range (Weighted Average)
Measured at fair value on a recurring basis:
MSRs	$	12,528	Discounted cash flow	Constant prepayment rate	8.0% - 31.0% (11%)
				Spread over forward interest rate swap rates	3.0% - 10.0% (8.8%)
Derivative assets	9,227		Consensus Pricing	Net market price	-9.2% - 31.7% (1.8%)
Derivative liabilities	6,049			Estimated Pull through %	9.0% - 99.0% (78.0%)
Municipal securities	2,872,007		Discounted cash flow	Discount rate	0.0% - 10.3% (3.9%)
				Cumulative default	0.0% - 38.4% (2.7%)
				Loss given default	5.0% - 80.0% (23.2%)
Asset-backed securities	42,575		Discounted cash flow	Discount rate	6.9% - 12.3% (7.0%)
				Cumulative prepayment rate	0.0% - 72% (8.2%)
				Cumulative default	0.7% - 100% (10.2%)
				Loss given default	85% - 100% (96.6%)
				Cure given deferral	0.0% - 75% (37.7%)
Loans held for investment	43,855		Discounted cash flow	Discount rate	7.0% - 17.6% (6.6%)
Measured at fair value on a nonrecurring basis:
MSRs	175,454		Discounted cash flow	Constant prepayment rate	7.0% - 21.0% (8%)
				Spread over forward interest rate swap rates	3.0% - 20.0% 10.8%)
Impaired loans	36,118		Appraisal value	NA	NA
Other real estate owned	43,816		Appraisal value	NA	NA

	Quantitative Information about Level 3 Fair Value Measurements at December 31, 2016
(dollar amounts in thousands)	Fair Value		Valuation Technique	Significant Unobservable Input	Range (Weighted Average)
Measured at fair value on a recurring basis:
MSRs	$	13,747	Discounted cash flow	Constant prepayment rate	5.63% - 34.4% (10.9%)
				Spread over forward interest rate swap rates	3.0% - 9.2% (5.4%)
Derivative assets	5,747		Consensus Pricing	Net market price	-7.1% - 25.4% (1.1%)
Derivative liabilities	7,870			Estimated Pull through %	8.1% - 99.8% (76.9%)
Municipal securities	2,798,044		Discounted cash flow	Discount rate	0.0% - 10.0% (3.6%)
				Cumulative default	0.3% - 37.8% (4.0%)
				Loss given default	5.0% - 80.0% (24.1%)
Asset-backed securities	76,003		Discounted cash flow	Discount rate	5.0% - 12.0% (6.3%)
				Cumulative prepayment rate	0.0% - 73% (6.5%)
				Cumulative default	1.1% - 100% (11.2%)
				Loss given default	85% - 100% (96.3%)
				Cure given deferral	0.0% - 75.0% (36.2%)
Loans held for investment	47,880		Discounted cash flow	Constant prepayment rate	5.4% - 16.2% (5.6%)
Measured at fair value on a nonrecurring basis:
MSRs	171,309		Discounted cash flow	Constant prepayment rate	5.57% - 30.4% (7.8%)
				Spread over forward interest rate swap rates	4.2% - 20.0% (11.7%)
Impaired loans	53,818		Appraisal value	NA	NA
Other real estate owned	50,930		Appraisal value	NA	NA

The following provides a general description of the impact of a change in an unobservable input on the fair value measurement and the interrelationship between unobservable inputs, where relevant/significant. Interrelationships may also exist between observable and unobservable inputs. Such relationships have not been included in the discussion below.

A significant change in the unobservable inputs may result in a significant change in the ending fair value measurement of Level 3 instruments. In general, prepayment rates increase when market interest rates decline and decrease when market interest rates rise and higher prepayment rates generally result in lower fair values for MSR assets, Asset-backed securities, and Automobile loans.

Credit loss estimates, such as probability of default, constant default, cumulative default, loss given default, cure given deferral, and loss severity, are driven by the ability of the borrowers to pay their loans and the value of the underlying collateral and are impacted by changes in macroeconomic conditions, typically increasing when economic conditions worsen and decreasing when conditions improve. An increase in the estimated prepayment rate typically results in a decrease in estimated credit losses and vice versa. Higher credit loss estimates generally result in lower fair values. Credit spreads generally increase when liquidity risks and market volatility increase and decrease when liquidity conditions and market volatility improve.

Discount rates and spread over forward interest rate swap 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. Higher discount rates and credit spreads generally result in lower fair market values.

Net market price and pull through percentages generally increase when market interest rates increase and decline when market interest rates decline. Higher net market price and pull through percentages generally result in higher fair values.

Fair values of financial instruments

The following table provides the carrying amounts and estimated fair values of Huntington’s financial instruments that are carried either at fair value or cost at June 30, 2017 and December 31, 2016:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial Assets
Cash and short-term assets	$	1,592,624	$	1,592,624	$	1,443,037	$	1,443,037
Trading account securities	94,767		94,767		133,295		133,295
Loans held for sale	748,077		752,800		512,951		515,640
Available-for-sale and other securities	15,388,306		15,388,306		15,562,837		15,562,837
Held-to-maturity securities	8,279,577		8,259,402		7,806,939		7,787,268
Net loans and direct financing leases	67,391,314		67,263,687		66,323,583		66,294,639
Derivatives	190,012		190,012		238,219		238,219
Financial Liabilities
Deposits	75,933,373		77,382,067		75,607,717		76,161,091
Short-term borrowings	4,552,877		4,552,877		3,692,654		3,692,654
Long-term debt	8,536,471		8,673,908		8,309,159		8,387,444
Derivatives	78,358		78,358		98,286		98,286

The following table presents the level in the fair value hierarchy for the estimated fair values of only Huntington’s financial instruments that are not already on the Unaudited Condensed Consolidated Balance Sheets at fair value at June 30, 2017 and December 31, 2016:

	Estimated Fair Value Measurements at Reporting Date Using						June 30, 2017
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Financial Assets
Held-to-maturity securities	$	—	$	8,259,402	$	—	$	8,259,402
Net loans and direct financing leases	—		—		67,263,687		67,263,687
Financial Liabilities
Deposits	—		73,621,776		3,760,291		77,382,067
Short-term borrowings	4,580		—		4,548,297		4,552,877
Long-term debt	—		8,278,588		395,320		8,673,908

	Estimated Fair Value Measurements at Reporting Date Using						December 31, 2016
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Financial Assets
Held-to-maturity securities	$	—	$	7,787,268	$	—	$	7,787,268
Net loans and direct financing leases	—		—		66,294,639		66,294,639
Financial Liabilities
Deposits	—		72,319,328		3,841,763		76,161,091
Short-term borrowings	474		—		3,692,180		3,692,654
Long-term debt	—		7,980,176		407,268		8,387,444

The short-term nature of certain assets and liabilities result in their carrying value approximating fair value. These include trading account securities, customers’ acceptance liabilities, short-term borrowings, bank acceptances outstanding, FHLB advances, and cash and short-term assets, which include cash and due from banks, interest-bearing deposits in banks, and federal funds sold and securities purchased under resale agreements. Loan commitments and letters-of-credit generally have short-term, variable-rate features and contain clauses that limit Huntington’s exposure to changes in customer credit quality. Accordingly, their carrying values, which are immaterial at the respective balance sheet dates, are reasonable estimates of fair value.

Certain assets, the most significant being operating lease assets, bank owned life insurance, and premises and equipment, do not meet the definition of a financial instrument and are excluded from this disclosure. Similarly, mortgage and nonmortgage servicing rights, deposit base, and other customer relationship intangibles are not considered financial instruments and are not included above. Accordingly, this fair value information is not intended to, and does not, represent Huntington’s underlying value. Many of the assets and liabilities subject to the disclosure requirements are not actively traded, requiring fair values to be estimated by Management. These estimations necessarily involve the use of judgment about a wide variety of factors, including but not limited to, relevancy of market prices of comparable instruments, expected future cash flows, and appropriate discount rates.

The following methods and assumptions were used by Huntington to estimate the fair value of the remaining classes of financial instruments:

Held-to-maturity securities

Fair values are determined by using models that are based on security-specific details, as well as relevant industry and economic factors. The most significant of these inputs are quoted market prices, and interest rate spreads on relevant benchmark securities.

Loans and Direct Financing Leases

Variable-rate loans that reprice frequently are based on carrying amounts, as adjusted for estimated credit losses. The fair values for other loans and leases are estimated using discounted cash flow analyses and employ interest rates currently being offered for loans and leases with similar terms. The rates take into account the position of the yield curve, as well as an adjustment for prepayment risk, operating costs, and profit. This value is also reduced by an estimate of expected losses and the credit risk associated in the loan and lease portfolio. The valuation of the loan portfolio reflected discounts that Huntington believed are consistent with transactions occurring in the marketplace.

Deposits

Demand deposits, savings accounts, and money market deposits are, by definition, equal to the amount payable on demand. The fair values of fixed-rate time deposits are estimated by discounting cash flows using interest rates currently being offered on certificates with similar maturities.

Debt

Long-term debt is based upon quoted market prices, which are inclusive of Huntington’s credit risk. In the absence of quoted market prices, discounted cash flows using market rates for similar debt with the same maturities are used in the determination of fair value.

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DERIVATIVE FINANCIAL INSTRUMENTS

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS

DERIVATIVE FINANCIAL INSTRUMENTS

Derivative financial instruments are recorded in the Unaudited Condensed Consolidated Balance Sheets as either an asset or a liability (in accrued income and other assets or accrued expenses and other liabilities, respectively) and measured at fair value.

The following table presents the fair values of all derivative instruments included in the Unaudited Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016. Amounts in the table below are presented gross without the impact of any net collateral arrangements:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Asset		Liability		Asset		Liability
Derivatives designated as Hedging Instruments
Interest rate contracts	$	40,416	$	90,326	$	46,440	$	99,996
Derivatives not designated as Hedging Instruments
Interest rate contracts	192,000		114,889		213,587		143,976
Foreign exchange contracts	27,655		27,883		23,265		19,576
Commodities contracts	53,295		49,520		108,026		104,328
Equity contracts	10,728		5,694		9,775		—
Total Contracts	$	324,094	$	288,312	$	401,093	$	367,876

Derivatives used in Asset and Liability Management Activities

Huntington engages in balance sheet hedging activity, principally for asset and liability management purposes, to convert fixed rate assets or liabilities into floating rate or vice versa. Balance sheet hedging activity is arranged to receive hedge accounting treatment and is classified as either fair value or cash flow hedges. Fair value hedges are purchased to convert deposits and subordinated and other long-term debt from fixed-rate obligations to floating rate. Cash flow hedges are also used to convert floating rate loans made to customers into fixed rate loans.

The following table presents the gross notional values of derivatives used in Huntington’s asset and liability management activities at June 30, 2017, identified by the underlying interest rate-sensitive instruments:

(dollar amounts in thousands)	Fair Value Hedges		Cash Flow Hedges		Total
Instruments associated with:
Loans	$	—	$	1,925,000	$	1,925,000
Deposits	—		—		—
Subordinated notes	950,000		—		950,000
Long-term debt	6,725,000		—		6,725,000
Total notional value at June 30, 2017	$	7,675,000	$	1,925,000	$	9,600,000

The following table presents additional information about the interest rate swaps used in Huntington’s asset and liability management activities at June 30, 2017:

							Weighted-Average Rate
(dollar amounts in thousands)	Notional Value		Average Maturity (years)	Fair Value			Receive		Pay
Asset conversion swaps
Receive fixed—generic	$	1,925,000	0.3	$	(3,420	)	1.07	%	1.44	%
Liability conversion swaps
Receive fixed—generic	7,675,000		2.8	(46,490		)	1.54		1.19
Total swap portfolio at June 30, 2017	$	9,600,000	2.3	$	(49,910	)	1.44	%	1.24	%

These derivative financial instruments were entered into for the purpose of managing the interest rate risk of assets and liabilities. Consequently, net amounts receivable or payable on contracts hedging either interest earning assets or interest bearing liabilities were accrued as an adjustment to either interest income or interest expense. The net amounts resulted in an increase to net interest income of $6 million and $19 million for the three-month periods ended June 30, 2017, and 2016, respectively. For the six-month periods ended June 30, 2017, and 2016, the net amounts resulted in an increase to net interest income of $16 million and $40 million, respectively.

Fair Value Hedges

The changes in fair value of the fair value hedges are, to the extent that the hedging relationship is effective, recorded through earnings and offset against changes in the fair value of the hedged item.

The following table presents the change in fair value for derivatives designated as fair value hedges as well as the offsetting change in fair value on the hedged item for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Interest rate contracts
Change in fair value of interest rate swaps hedging deposits (1)	$	—		$	—		$	(76	)	$	(82	)
Change in fair value of hedged deposits (1)	—			—			—			72
Change in fair value of interest rate swaps hedging subordinated notes (2)	2,277			4			(2,431		)	6,809
Change in fair value of hedged subordinated notes (2)	(2,235		)	(4		)	3,168			(6,809		)
Change in fair value of interest rate swaps hedging other long-term debt (2)	15,832			22,017			5,551			83,049
Change in fair value of hedged other long-term debt (2)	(16,913		)	(21,047		)	(8,378		)	(80,834		)

(1) Effective portion of the hedging relationship is recognized in Interest expense—deposits in the Unaudited Condensed Consolidated Statements of Income. Any resulting ineffective portion of the hedging relationship is recognized in noninterest income in the Unaudited Condensed Consolidated Statements of Income.

(2) Effective portion of the hedging relationship is recognized in Interest expense—subordinated notes and other long-term debt in the Unaudited Condensed Consolidated Statements of Income. Any resulting ineffective portion of the hedging relationship is recognized in noninterest income in the Unaudited Condensed Consolidated Statements of Income.

Cash Flow Hedges

To the extent these derivatives designated as cash flow hedges are effective in offsetting the variability of the hedged cash flows, changes in the derivatives’ fair value will not be included in current earnings but are reported as a component of OCI in the Unaudited Condensed Consolidated Statements of Changes in Shareholders’ Equity. These changes in fair value will be included in earnings of future periods when earnings are also affected by the changes in the hedged cash flows. To the extent these derivatives are not effective, changes in their fair values are immediately included in noninterest income.

The following table presents the gains and (losses) recognized in OCI and the location in the Unaudited Condensed Consolidated Statements of Income of gains and (losses) reclassified from OCI into earnings for derivatives designated as effective cash flow hedges for the three-month and six-month periods ended June 30, 2017 and 2016:

Derivatives in cash flow hedging relationships	Amount of gain or (loss) recognized in OCI on derivatives (effective portion) (after-tax)				Location of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	Amount of (gain) or loss reclassified from accumulated OCI into earnings (effective portion)
	Three Months Ended June 30,					Three Months Ended June 30,
(dollar amounts in thousands)	2017		2016			2017		2016
Interest rate contracts
Loans	$	793	$	1,293	Interest and fee income - loans and leases	$	427	$	(248	)
Investment Securities	—		—		Noninterest income - other income	—		—
Total	$	793	$	1,293		$	427	$	(248	)

Derivatives in cash flow hedging relationships	Amount of gain or (loss) recognized in OCI on derivatives (effective portion) (after-tax)					Location of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	Amount of (gain) or loss reclassified from accumulated OCI into earnings (effective portion)
	Six Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017		2016
Interest rate contracts
Loans	$	(397	)	$	10,542	Interest and fee income - loans and leases	$	987	$	(893	)
Investment Securities	—			—		Noninterest income - other income	—		1
	$	(397	)	$	10,542		$	987	$	(892	)

Gains and losses on swaps related to loans and investment securities and swaps related to subordinated debt are recorded within interest income and interest expense, respectively. During the next twelve months, Huntington expects to reclassify to earnings approximately $(2) million after-tax of unrealized gains (losses) on cash flow hedging derivatives currently in OCI.

The following table presents the gains and (losses) recognized in noninterest income for the ineffective portion of interest rate contracts for derivatives designated as cash flow hedges for the three and six-month periods ended June 30, 2017 and 2016:

Derivatives in cash flow hedging relationships	Three Months Ended June 30,					Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016		2017			2016
Interest rate contracts
Loans	$	(31	)	$	421	$	(134	)	$	377

Derivatives used in mortgage banking activities

Mortgage loan origination hedging activity

Huntington’s mortgage origination hedging activity is related to the hedging of the mortgage pricing commitments to customers and the secondary sale to third parties. The value of a newly originated mortgage is not firm until the interest rate is committed or locked. The interest rate lock commitments are derivative positions offset by forward commitments to sell loans.

Huntington uses two types of mortgage-backed securities in its forward commitments to sell loans. The first type of forward commitment is a “To Be Announced” (or TBA), the second is a “Specified Pool” mortgage-backed security. Huntington uses these derivatives to hedge the value of mortgage-backed securities until they are sold.

The following table summarizes the derivative assets and liabilities used in mortgage banking activities:

Derivatives used in mortgage banking activities	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Asset		Liability		Asset		Liability
Interest rate lock agreements	$	9,227	$	355	$	5,747	$	1,598
Forward trades and options	1,642		2,178		13,319		1,173
Total derivatives used in mortgage banking activities	$	10,869	$	2,533	$	19,066	$	2,771

MSR hedging activity

Huntington’s MSR economic hedging activity uses securities and derivatives to manage the value of the MSR asset and to mitigate the various types of risk inherent in the MSR asset, including risks related to duration, basis, convexity, volatility, and yield curve. The hedging instruments include forward commitments, interest rate swaps, and options on interest rate swaps.

The total notional value of these derivative financial instruments at June 30, 2017 and December 31, 2016, was $228 million and $300 million, respectively. The total notional amount at June 30, 2017, corresponds to trading assets with a fair value of $1 million and trading liabilities with a fair value of $2 million. Net trading gains and (losses) related to MSR hedging for the three-month periods ended June 30, 2017 and 2016, were $2 million and $6 million and $1 million and $18 million for the six-month periods ended June 30, 2017 and 2016, respectively. These amounts are included in mortgage banking income in the Unaudited Condensed Consolidated Statements of Income.

Derivatives used in customer related activities

Various derivative financial instruments are offered to enable customers to meet their financing and investing objectives and for their risk management purposes. Derivative financial instruments used in trading activities consisted of commodity, interest rate, and foreign exchange contracts. Huntington may enter into offsetting third-party contracts with approved, reputable counterparties with substantially matching terms and currencies in order to economically hedge significant exposure related to derivatives used in trading activities.

The interest rate risk of customer derivatives is mitigated by entering into similar derivatives having offsetting terms with other counterparties. The credit risk to these customers is evaluated and included in the calculation of fair value. Foreign currency derivatives help the customer hedge risk and reduce exposure to fluctuations in exchange rates. Transactions are primarily in liquid currencies with Canadian dollars and Euros comprising a majority of all transactions. Commodity derivatives help the customer hedge risk and reduce exposure to fluctuations in the price of various commodities. Hedging of energy related products and base metals comprise the majority of all transactions.

The net fair values of these derivative financial instruments, for which the gross amounts are included in accrued income and other assets or accrued expenses and other liabilities at both June 30, 2017 and December 31, 2016, were $80 million and $80 million, respectively. The total notional values of derivative financial instruments used by Huntington on behalf of customers, including offsetting derivatives, were $20.6 billion and $20.6 billion at both June 30, 2017 and December 31, 2016, respectively. Huntington’s credit risk from interest rate swaps used for trading purposes was $156 million and $196 million at the same dates, respectively.

Share Swap Economic Hedge

Huntington acquires and holds shares of Huntington common stock in a Rabbi Trust for the Executive Deferred Compensation Plan. Huntington common stock held in the Rabbi Trust is recorded at cost and the corresponding deferred compensation liability is recorded at fair value using Huntington's share price as a significant input.

During the second quarter of 2016, Huntington entered into an economic hedge with a $20 million notional amount to hedge deferred compensation expense related to the Executive Deferred Compensation Plan. During the second quarter of 2017, Huntington entered into another economic hedge with a notional value of $8 million for a total notional amount of $28 million to hedge deferred compensation expense related to the Executive Deferred Compensation Plan. The economic hedge is recorded at fair value within other assets or liabilities. Changes in the fair value are recorded directly through other noninterest expense in the Unaudited Condensed Consolidated Statements of Income. At June 30, 2017, the fair value of the share swap was $11 million.

Visa Related Swap

In connection with the sale of Huntington’s Class B Visa^® shares, Huntington entered into a swap agreement with the purchaser of the shares. The swap agreement adjusts for dilution in the conversion ratio of Class B shares resulting from the Visa^® litigation. In connection with the FirstMerit acquisition, Huntington acquired an additional Visa^® related swap agreement. At June 30, 2017, the combined fair value of the swap liabilities of $6 million is an estimate of the exposure liability based upon Huntington’s assessment of the potential Visa^® litigation losses and timing of litigation settlement.

Financial assets and liabilities that are offset in the Unaudited Condensed Consolidated Balance Sheets

Huntington records derivatives at fair value as further described in Note 11.

Derivative balances are presented on a net basis taking into consideration the effects of legally enforceable master netting agreements. Additionally, collateral exchanged with counterparties is also netted against the applicable derivative fair values. Huntington enters into derivative transactions with two primary groups: broker-dealers and banks, and Huntington’s customers. Different methods are utilized for managing counterparty credit exposure and credit risk for each of these groups.

Huntington enters into transactions with broker-dealers and banks for various risk management purposes. These types of transactions generally are high dollar volume. Huntington enters into bilateral collateral and master netting agreements with these counterparties, and routinely exchanges cash and high quality securities collateral. Huntington enters into transactions with customers to meet their financing, investing, payment and risk management needs. These types of transactions generally are low dollar volume. Huntington generally enters into master netting agreements with customer counterparties, however collateral is generally not exchanged.

At June 30, 2017 and December 31, 2016, aggregate credit risk associated with these derivatives, net of collateral that has been pledged by the counterparty, was $44 million and $26 million, respectively. The credit risk associated with interest rate swaps is calculated after considering master netting agreements with broker-dealers and banks.

At June 30, 2017, Huntington pledged $120 million of investment securities and cash collateral to counterparties, while other counterparties pledged $53 million of investment securities and cash collateral to Huntington to satisfy collateral netting agreements. In the event of credit downgrades, Huntington would not be required to provide additional collateral.

The following tables present the gross amounts of these assets and liabilities with any offsets to arrive at the net amounts recognized in the Unaudited Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016:

Offsetting of Financial Liabilities and Derivative Assets
				Gross amounts offset in the condensed consolidated balance sheets			Net amounts of assets presented in the condensed consolidated balance sheets		Gross amounts not offset in the condensed consolidated balance sheets
(dollar amounts in thousands)		Gross amounts of recognized assets							Financial instruments			Cash collateral received			Net amount
June 30, 2017	Derivatives	$	334,963	$	(144,951	)	$	190,012	$	(5,009	)	$	(18,448	)	$	166,555
December 31, 2016	Derivatives	420,159		(181,940		)	238,219		(34,328		)	(5,428		)	198,463

Offsetting of Financial Liabilities and Derivative Liabilities
				Gross amounts offset in the condensed consolidated balance sheets			Net amounts of liabilities presented in the condensed consolidated balance sheets		Gross amounts not offset in the condensed consolidated balance sheets
(dollar amounts in thousands)		Gross amounts of recognized liabilities							Financial instruments			Cash collateral delivered			Net amount
June 30, 2017	Derivatives	$	290,845	$	(212,487	)	$	78,358	$	—		$	(24,348	)	$	54,010
December 31, 2016	Derivatives	370,647		(272,361		)	98,286		(7,550		)	(23,943		)	66,793

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VIEs

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

VIEs

VIEs

Consolidated VIEs

Consolidated VIEs at June 30, 2017, consisted of certain loan and lease securitization trusts. Huntington has determined the trusts are VIEs. Huntington has concluded that it is the primary beneficiary of these trusts because it has the power to direct the activities of the entity that most significantly affect the entity’s economic performance and it has either the obligation to absorb losses of the entity that could potentially be significant to the VIE or the right to receive benefits from the entity that could potentially be significant to the VIE.

The following tables present the carrying amount and classification of the consolidated trusts’ assets and liabilities that were included in the Unaudited Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016:

	June 30, 2017
	Huntington Technology Funding Trust		Other Consolidated VIEs		Total
(dollar amounts in thousands)	Series 2014A
Assets:
Cash	$	1,566	$	—	$	1,566
Net loans and leases	43,039		—		43,039
Accrued income and other assets	—		271		271
Total assets	$	44,605	$	271	$	44,876
Liabilities:
Other long-term debt	$	36,040	$	—	$	36,040
Accrued interest and other liabilities	—		271		271
Total liabilities	36,040		271		36,311
Equity:
Beneficial Interest owned by third party	8,565		—		8,565
Total liabilities and equity	$	44,605	$	271	$	44,876

	December 31, 2016
	Huntington Technology Funding Trust		Other Consolidated VIEs		Total
(dollar amounts in thousands)	Series 2014A
Assets:
Cash	$	1,564	$	—	$	1,564
Net loans and leases	69,825		—		69,825
Accrued income and other assets	—		281		281
Total assets	$	71,389	$	281	$	71,670
Liabilities:
Other long-term debt	$	57,494	$	—	$	57,494
Accrued interest and other liabilities	—		281		281
Total liabilities	57,494		281		57,775
Equity:
Beneficial Interest owned by third party	13,895		—		13,895
Total liabilities and equity	$	71,389	$	281	$	71,670

The loans and leases were designated to repay the securitized notes. Huntington services the loans and leases and uses the proceeds from principal and interest payments to pay the securitized notes during the amortization period. Huntington has not provided financial or other support that was not previously contractually required.

Unconsolidated VIEs

The following tables provide a summary of the assets and liabilities included in Huntington’s Unaudited Condensed Consolidated Financial Statements, as well as the maximum exposure to losses, associated with its interests related to unconsolidated VIEs for which Huntington holds an interest, but is not the primary beneficiary, to the VIE at June 30, 2017, and December 31, 2016:

	June 30, 2017
(dollar amounts in thousands)	Total Assets		Total Liabilities		Maximum Exposure to Loss
2016-1 Automobile Trust	$	10,464	$	—	$	10,464
2015-1 Automobile Trust	2,046		—		2,046
Trust Preferred Securities	13,919		252,568		—
Low Income Housing Tax Credit Partnerships	615,691		327,793		615,691
Other Investments	110,318		55,026		110,318
Total	$	752,438	$	635,387	$	738,519

	December 31, 2016
(dollar amounts in thousands)	Total Assets		Total Liabilities		Maximum Exposure to Loss
2016-1 Automobile Trust	$	14,770	$	—	$	14,770
2015-1 Automobile Trust	2,227		—		2,227
Trust Preferred Securities	13,919		252,552		—
Low Income Housing Tax Credit Partnerships	576,880		292,721		576,880
Other Investments	79,195		42,316		79,195
Total	$	686,991	$	587,589	$	673,072

The following table provides a summary of automobile transfers to trusts in separate securitization transactions.

(dollar amounts in millions)	Year	Amount Transferred
2016-1 Automobile Trust	2016	$	1,500
2015-1 Automobile Trust	2015	750

The securitizations and the resulting sale of all underlying securities qualified for sale accounting. Huntington has concluded that it is not the primary beneficiary of these trusts because it has neither the obligation to absorb losses of the entities that could potentially be significant to the VIEs nor the right to receive benefits from the entities that could potentially be significant to the VIEs. Huntington is not required and does not currently intend to provide any additional financial support to the trusts. Investors and creditors only have recourse to the assets held by the trusts. The interest Huntington holds in the VIEs relates to servicing rights which are included within servicing rights of Huntington’s Unaudited Consolidated Balance Sheets. The maximum exposure to loss is equal to the carrying value of the servicing asset. See Note 6 for more information.

Trust Preferred Securities

Huntington has certain wholly-owned trusts whose assets, liabilities, equity, income, and expenses are not included within Huntington’s Unaudited Condensed Consolidated Financial Statements. These trusts have been formed for the sole purpose of issuing trust-preferred securities, from which the proceeds are then invested in Huntington junior subordinated debentures, which are reflected in Huntington’s Unaudited Condensed Consolidated Balance Sheets as subordinated notes. The trust securities are the obligations of the trusts, and as such, are not consolidated within Huntington’s Unaudited Condensed Consolidated Financial Statements. A list of trust preferred securities outstanding at June 30, 2017 follows:

(dollar amounts in thousands)	Rate			Principal amount of subordinated note/ debenture issued to trust (1)		Investment in unconsolidated subsidiary
Huntington Capital I	1.87	%	(2)	$	69,730	$	6,186
Huntington Capital II	1.87		(3)	32,093		3,093
Sky Financial Capital Trust III	2.70		(4)	72,165		2,165
Sky Financial Capital Trust IV	2.55		(4)	74,320		2,320
Camco Financial Trust	3.69		(5)	4,260		155
Total				$	252,568	$	13,919

(1) Represents the principal amount of debentures issued to each trust, including unamortized original issue discount.

(2) Variable effective rate at June 30, 2017, based on three-month LIBOR +0.70%.

(3) Variable effective rate at June 30, 2017, based on three-month LIBOR +0.625%.

(4) Variable effective rate at June 30, 2017, based on three-month LIBOR +1.40%.

(5) Variable effective rate at June 30, 2017, based on three-month LIBOR +1.33%.

Each issue of the junior subordinated debentures has an interest rate equal to the corresponding trust securities distribution rate. Huntington has the right to defer payment of interest on the debentures at any time, or from time-to-time for a period not exceeding five years provided that no extension period may extend beyond the stated maturity of the related debentures. During any such extension period, distributions to the trust securities will also be deferred and Huntington’s ability to pay dividends on its common stock will be restricted. Periodic cash payments and payments upon liquidation or redemption with respect to trust securities are guaranteed by Huntington to the extent of funds held by the trusts. The guarantee ranks subordinate and junior in right of payment to all indebtedness of the Company to the same extent as the junior subordinated debt. The guarantee does not place a limitation on the amount of additional indebtedness that may be incurred by Huntington.

Low Income Housing Tax Credit Partnerships

Huntington makes certain equity investments in various limited partnerships that sponsor affordable housing projects utilizing the Low Income Housing Tax Credit (LIHTC) pursuant to Section 42 of the Internal Revenue Code. The purpose of these investments is to achieve a satisfactory return on capital, to facilitate the sale of additional affordable housing product offerings, and to assist in achieving goals associated with the Community Reinvestment Act. The primary activities of the limited partnerships include the identification, development, and operation of multi family housing that is leased to qualifying residential tenants. Generally, these types of investments are funded through a combination of debt and equity.

Huntington uses the proportional amortization method to account for all qualified investments in these entities. These investments are included in accrued income and other assets. Investments that do not meet the requirements of the proportional amortization method are recognized using the equity method. Investment gains/losses related to these investments are included in noninterest-income in the Unaudited Condensed Consolidated Statements of Income.

The following table presents the balances of Huntington’s affordable housing tax credit investments and related unfunded commitments at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	June 30, 2017			December 31, 2016
Affordable housing tax credit investments	$	942,769		$	877,237
Less: amortization	(327,078		)	(300,357		)
Net affordable housing tax credit investments	$	615,691		$	576,880
Unfunded commitments	$	327,793		$	292,721

The following table presents other information relating to Huntington’s affordable housing tax credit investments for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Tax credits and other tax benefits recognized	$	22,671	$	18,150	$	45,955	$	36,434
Proportional amortization method
Tax credit amortization expense included in provision for income taxes	17,220		12,499		34,182		24,905
Equity method
Tax credit investment (gains) losses included in non-interest income	—		132		109		264

Huntington recognized immaterial impairment losses on tax credit investments during the three-month and six-month periods ended June 30, 2017 and 2016. The impairment losses recognized related to the fair value of the tax credit investments that were less than carrying value.

Other Investments

Other investments determined to be VIE’s include investments in New Market Tax Credit Investments, Historic Tax Credit Investments, Small Business Investment Companies, Rural Business Investment Companies, certain equity method investments and other miscellaneous investments.

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COMMITMENTS AND CONTINGENT LIABILITIES

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENT LIABILITIES

COMMITMENTS AND CONTINGENT LIABILITIES

Commitments to extend credit

In the ordinary course of business, Huntington makes various commitments to extend credit that are not reflected in the Unaudited Condensed Consolidated Financial Statements. The contract amounts of these financial agreements at June 30, 2017 and December 31, 2016, were as follows:

(dollar amounts in thousands)	June 30, 2017		December 31, 2016
Contract amount represents credit risk:
Commitments to extend credit
Commercial	$	15,684,661	$	15,190,056
Consumer	12,727,316		12,235,943
Commercial real estate	1,474,831		1,697,671
Standby letters-of-credit	559,903		637,182
Commercial letters-of-credit	11,952		4,610

Commitments to extend credit generally have fixed expiration dates, are variable-rate, and contain clauses that permit Huntington to terminate or otherwise renegotiate the contracts in the event of a significant deterioration in the customer’s credit quality. These arrangements normally require the 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. The interest rate risk arising from these financial instruments is insignificant as a result of their predominantly short-term, variable-rate nature.

Standby letters-of-credit are conditional commitments issued to guarantee the performance of a customer to a third party. These guarantees are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing, and similar transactions. Most of these arrangements mature within two years. The carrying amount of deferred revenue associated with these guarantees was $8 million and $8 million at June 30, 2017 and December 31, 2016, respectively.

Commercial letters-of-credit represent short-term, self-liquidating instruments that facilitate customer trade transactions and generally have maturities of no longer than 90 days. The goods or cargo being traded normally secures these instruments.

Commitments to sell loans

Activity related to our mortgage origination activity supports the hedging of the mortgage pricing commitments to customers and the secondary sale to third parties. At June 30, 2017 and December 31, 2016, Huntington had commitments to sell residential real estate loans of $1.1 billion and $0.8 billion, respectively. These contracts mature in less than one year.

Litigation

The nature of Huntington’s business ordinarily results in a certain amount of pending as well as threatened claims, litigation, investigations, regulatory and legal and administrative cases, matters and proceedings, all of which are considered incidental to the normal conduct of business. When the Company determines it has meritorious defenses to the claims asserted, it vigorously defends itself. The Company considers settlement of cases when, in Management’s judgment, it is in the best interests of both the Company and its shareholders to do so.

On at least a quarterly basis, Huntington assesses its liabilities and contingencies in connection with threatened and outstanding legal cases, matters and proceedings, utilizing the latest information available. For cases, matters and proceedings where it is both probable the Company will incur a loss and the amount can be reasonably estimated, Huntington establishes an accrual for the loss. Once established, the accrual is adjusted as appropriate to reflect any relevant developments. For cases, matters or proceedings where a loss is not probable or the amount of the loss cannot be estimated, no accrual is established.

In certain cases, matters and proceedings, exposure to loss exists in excess of the accrual to the extent such loss is reasonably possible, but not probable. Management believes an estimate of the aggregate range of reasonably possible losses, in excess of amounts accrued, for current legal proceedings is up to $70 million at June 30, 2017. For certain other cases, and matters, Management cannot reasonably estimate the possible loss at this time. Any estimate involves significant judgment, given the varying stages of the proceedings (including the fact that many of them are currently in preliminary stages), the existence of multiple defendants in several of the current proceedings whose share of liability has yet to be determined, the numerous unresolved issues in many of the proceedings, and the inherent uncertainty of the various potential outcomes of such proceedings. Accordingly, Management’s estimate will change from time-to-time, and actual losses may be more or less than the current estimate. $0

While the final outcome of legal cases, matters, and proceedings is inherently uncertain, based on information currently available, advice of counsel, and available insurance coverage, Management believes that the amount it has already accrued is adequate and any incremental liability arising from the Company’s legal cases, matters, or proceedings will not have a material negative adverse effect on the Company’s consolidated financial position as a whole. However, in the event of unexpected future developments, it is possible that the ultimate resolution of these cases, matters, and proceedings, if unfavorable, may be material to the Company’s consolidated financial position in a particular period.

Meoli v. The Huntington National Bank (Cyberco Litigation). The Bank has been named a defendant in a lawsuit arising from the Banks’s commercial lending, depository, and equipment leasing relationships with Cyberco Holdings, Inc. (Cyberco), based in Grand Rapids, Michigan. In November 2004, an equipment leasing fraud was uncovered, whereby Cyberco sought financing from equipment lessors and financial institutions, including Huntington, allegedly to purchase computer equipment from Teleservices Group, Inc. (Teleservices). Cyberco created fraudulent documentation to close the financing transactions when, in fact, no computer equipment was ever purchased or leased from Teleservices, which later proved to be a shell corporation. Bankruptcy proceedings for both Cyberco and Teleservices later ensued.

On September 28, 2015, adopting the bankruptcy court's recommendation, the U.S. District Court for the Western District of Michigan entered a judgment against Huntington in the amount of $72 million plus costs and pre- and post-judgment interest. Huntington increased its legal reserve by approximately $38 million to fully accrue for the amount of the judgment in the third quarter of 2015 while appealing the decision to the U.S. Sixth Circuit Court of Appeals. On February 8, 2017, the appellate court reversed the district court decision in part and remanded the case to the district court for further proceedings. Consistent with its reading of the appellate court opinion, Huntington decreased its legal reserve by approximately $42 million in the fourth quarter of 2016.

Powell v. Huntington National Bank.  Huntington is a defendant in a class action filed on October 15, 2013 alleging Huntington charged late fees on mortgage loans in a method that violated West Virginia law and the loan documents. Plaintiffs seek statutory civil penalties, compensatory damages and attorney’s fees. Huntington filed a motion for summary judgment on the plaintiffs’ claims, which was granted by the U.S. District Court on December 28, 2016.  Plaintiffs have filed a notice of appeal to the U.S. Fourth Circuit Court of Appeals and the appeal has been briefed. Oral arguments are scheduled for October 2017.

FirstMerit Overdraft Litigation. Commencing in December 2010, two separate lawsuits were filed in the Summit County Court of Common Pleas and the Lake County Court of Common Pleas against FirstMerit. The complaints were brought as class actions on behalf of Ohio residents who maintained a checking account at FirstMerit and who incurred one or more overdraft fees as a result of the alleged re-sequencing of debit transactions. The parties have reached a global settlement for approximately $9 million cash to a common fund plus an additional $7 million in debt forgiveness. Attorneys' fees will be paid from the fund, with any remaining funds going to charity. FirstMerit’s insurer has reimbursed Huntington 49% of the approximately $9 million, which totals approximately $4.4 million. The court preliminarily approved the settlement on December 5, 2016 and the cash portion of the settlement was funded on December 12, 2016. The settlement received final approval on June 2, 2017 and there has been no appeal, so the settlement is final. The settlement administrator is in the process of assessing claims and it is anticipated claims will be paid from the settlement fund in the third quarter of 2017.

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SEGMENT REPORTING

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

SEGMENT REPORTING

SEGMENT REPORTING

Our business segments are based on our internally-aligned segment leadership structure, which is how we monitor results and assess performance. We have four major business segments: Consumer and Business Banking, Commercial Banking, Commercial Real Estate and Vehicle Finance(CREVF), Regional Banking and The Huntington Private Client Group, and (RBHPCG). The Treasury / Other function includes our technology and operations, other unallocated assets, liabilities, revenue, and expense.

Business segment results are determined based upon our management reporting system, which assigns balance sheet and income statement items to each of the business segments. The process is designed around our organizational and management structure and, accordingly, the results derived are not necessarily comparable with similar information published by other financial institutions. Additionally, because of the interrelationships of the various segments, the information presented is not indicative of how the segments would perform if they operated as independent entities.

Revenue is recorded in the business segment responsible for the related product or service. Fee sharing is recorded to allocate portions of such revenue to other business segments involved in selling to, or providing service to customers. Results of operations for the business segments reflect these fee sharing allocations.

The management accounting process that develops the business segment reporting utilizes various estimates and allocation methodologies to measure the performance of the business segments. Expenses are allocated to business segments using a two-phase approach. The first phase consists of measuring and assigning unit costs (activity-based costs) to activities related to product origination and servicing. These activity-based costs are then extended, based on volumes, with the resulting amount allocated to business segments that own the related products. The second phase consists of the allocation of overhead costs to all four business segments from Treasury / Other. We utilize a full-allocation methodology, where all Treasury / Other expenses, except reported Significant Items, and a small amount of other residual unallocated expenses, are allocated to the four business segments.

The management accounting policies and processes utilized in compiling segment financial information are highly subjective and, unlike financial accounting, are not based on authoritative guidance similar to GAAP. As a result, reported segment results are not necessarily comparable with similar information reported by other financial institutions. Furthermore, changes in management structure or allocation methodologies and procedures result in changes in reported segment
financial data. Accordingly, certain amounts have been reclassified to conform to the current period presentation.

We use an active and centralized Funds Transfer Pricing (FTP) methodology to attribute appropriate income to the business segments. The intent of the FTP methodology is to transfer interest rate risk from the business segments by providing matched duration funding of assets and liabilities. The result is to centralize the financial impact, management, and reporting of interest rate risk in the Treasury / Other function where it can be centrally monitored and managed. The Treasury / Other function charges (credits) an internal cost of funds for assets held in (or pays for funding provided by) each business segment. The FTP rate is based on prevailing market interest rates for comparable duration assets (or liabilities).

We announced a change within our executive leadership team, which became effective during the 2017 second quarter. As a result, the previously reported Home Lending segment is now included as an operating unit in the Consumer and Business Banking segment. Additionally, the Insurance operating unit previously included in Commercial Banking was realigned to RBHPCG during the quarter. Prior period results have been reclassified to conform to the current period presentation.

Consumer and Business Banking - The Consumer and Business Banking segment, including Home Lending, provides a wide array of financial products and services to consumer and small business customers including but not limited to checking accounts, savings accounts, money market accounts, certificates of deposit, mortgage loans, consumer loans, credit cards, and small business loans and investment products. Other financial services available to consumer and small business customers include mortgages, insurance, interest rate risk protection, foreign exchange, and treasury management. Business Banking is defined as serving companies with revenues up to $20 million and consists of approximately 254,000 businesses. Home Lending supports origination and servicing of consumer loans and mortgages for customers who are generally located in our primary banking markets across all segments.

Commercial Banking - Through a relationship banking model, this segment provides a wide array of products and services to the middle market, large corporate, and government public sector customers located primarily within our geographic footprint. The segment is divided into six business units: middle market, large corporate, specialty banking, asset finance, capital markets and treasury management.

Commercial Real Estate and Vehicle Finance - This segment provides lending and other banking products and services to customers outside of our traditional retail and commercial banking segments. Our products and services include providing financing for the purchase of automobiles, light-duty trucks, recreational vehicles and marine craft at franchised dealerships, financing the acquisition of new and used vehicle inventory of franchised automotive dealerships, and financing for land, buildings, and other commercial real estate owned or constructed by real estate developers, automobile dealerships, or other customers with real estate project financing needs. Products and services are delivered through highly specialized relationship-focused bankers and product partners.

Regional Banking and The Huntington Private Client Group - The core business of The Huntington Private Client Group is The Huntington Private Bank, which consists of Private Banking, Wealth & Investment Management, and Retirement plan services. The Huntington Private Bank provides high net-worth customers with deposit, lending (including specialized lending options), and banking services. The Huntington Private Bank delivers wealth management and legacy planning through investment and portfolio management, fiduciary administration, and trust services. This group also provides retirement plan services to corporate businesses. The Huntington Private Client Group provides corporate trust services and institutional and mutual fund custody services and insurance services.

Listed below is certain operating basis financial information reconciled to Huntington’s June 30, 2017, December 31, 2016, and June 30, 2016, reported results by business segment:

	Three Months Ended June 30,
Income Statements	Consumer & Business Banking		Commercial Banking			CREVF		RBHPCG			Treasury / Other			Huntington Consolidated
(dollar amounts in thousands)
2017
Net interest income	$	420,210	$	168,814		$	140,367	$	48,749		$	(33,628	)	$	744,512
Provision for (reduction in allowance) credit losses	17,000		(10,339		)	20,793		(2,477		)	1			24,978
Noninterest income	184,199		59,926			12,559		46,385			22,149			325,218
Noninterest expense	412,400		101,184			55,946		60,885			63,949			694,364
Income taxes	61,253		48,263			26,665		12,854			(70,388		)	78,647
Net income	$	113,756	$	89,632		$	49,522	$	23,872		$	(5,041	)	$	271,741
2016
Net interest income	$	284,896	$	106,971		$	95,617	$	35,499		$	(17,102	)	$	505,881
Provision for (reduction in allowance) credit losses	20,848		(5,630		)	9,740		(448		)	(1		)	24,509
Noninterest income	152,242		51,158			10,640		40,097			16,975			271,112
Noninterest expense	310,924		80,842			41,185		53,757			36,953			523,661
Income taxes	36,879		29,021			19,366		7,801			(38,784		)	54,283
Net income	$	68,487	$	53,896		$	35,966	$	14,486		$	1,705		$	174,540

	Six Months Ended June 30,
Income Statements	Consumer & Business Banking		Commercial Banking		CREVF			RBHPCG			Treasury / Other			Huntington Consolidated
(dollar amounts in thousands)
2017
Net interest income	$	828,936	$	343,285	$	279,700		$	95,492		$	(72,926	)	$	1,474,487
Provision for credit losses	50,181		11,798		30,342			295			—			92,616
Noninterest income	354,970		117,573		23,768			94,395			46,975			637,681
Noninterest expense	824,048		201,382		108,635			123,934			143,787			1,401,786
Income taxes	108,387		86,687		57,572			22,980			(137,695		)	137,931
Net income	$	201,290	$	160,991	$	106,919		$	42,678		$	(32,043	)	$	479,835
2016
Net interest income	$	562,423	$	212,240	$	191,214		$	70,503		$	(27,433	)	$	1,008,947
Provision for (reduction in allowance) credit losses	30,750		29,423		(6,909		)	(1,173		)	—			52,091
Noninterest income	284,002		95,484		17,950			79,403			36,140			512,979
Noninterest expense	616,981		159,050		80,922			109,172			48,616			1,014,741
Income taxes	69,543		41,738		47,303			14,667			(64,011		)	109,240
Net income	$	129,151	$	77,513	$	87,848		$	27,240		$	24,102		$	345,854

	Assets at				Deposits at
(dollar amounts in thousands)	June 30, 2017		December 31, 2016		June 30, 2017		December 31, 2016
Consumer & Business Banking	$	25,820,232	$	25,332,635	$	45,971,574	$	45,355,745
Commercial Banking	24,021,962		24,121,689		17,867,356		18,053,208
CREVF	24,431,788		23,576,832		1,943,670		1,893,072
RBHPCG	5,570,436		5,327,622		5,882,745		6,214,250
Treasury / Other	21,562,361		21,355,319		4,268,028		4,091,442
Total	$	101,406,779	$	99,714,097	$	75,933,373	$	75,607,717

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ACCOUNTING STANDARDS UPDATE (Policies)

6 Months Ended

Jun. 30, 2017

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

ACCOUNTING STANDARDS UPDATE

ACCOUNTING STANDARDS UPDATE

ASU 2014-09—Revenue from Contracts with Customers (Topic 606): The amendments in ASU 2014-09 supersede the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. The general principle of the amendments require an entity to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance sets forth a five step approach for revenue recognition. The amendments are effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Management intends to adopt the new guidance on January 1, 2018 using the modified retrospective approach and is well into its outlined implementation plan. In this regard, management has completed a preliminary analysis that includes (a) identification of all revenue streams included in the financial statements; (b) determination of scope exclusions to identify ‘in-scope’ revenue streams; (c) determination of size, timing, and amount of revenue recognition for in-scope items; (d) determination of sample size of contracts for further analysis; and (e) completion of limited analysis on selected contracts to evaluate the potential impact of the new guidance. The key revenue streams identified include service charges, credit card and payment processing fees, trust services fees, insurance income, brokerage services, and mortgage banking income. The new guidance is not expected to have a significant impact on Huntington’s Unaudited Consolidated Financial Statements.

ASU 2016-01 - Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this Update make targeted improvements to GAAP including, but not limited to, requiring an entity to measure its equity investments with changes in the fair value recognized in the income statement; requiring an entity to present separately in OCI the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments (i.e., FVO liability); requiring public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; assessing deferred tax assets related to a net unrealized loss on AFS securities in combination with the entity’s other deferred tax assets; and eliminating some of the disclosures required by the existing GAAP while requiring entities to present and disclose some additional information. The new guidance is effective for the fiscal period beginning after December 15, 2017, including interim periods within those fiscal years. An entity should apply the amendments as a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendment is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2016-02 - Leases. This Update sets forth a new lease accounting model for lessors and lessees. For lessees, virtually all leases will be required to be recognized on the balance sheet by recording a right-of-use asset and lease liability. Subsequent accounting for leases varies depending on whether the lease is an operating lease or a finance lease. The accounting applied by a lessor is largely unchanged from that applied under the existing guidance. The ASU requires additional qualitative and quantitative disclosures with the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The Update is effective for the fiscal period beginning after December 15, 2018, with early application permitted. Management is currently assessing the impact of the new guidance on Huntington's Unaudited Consolidated Financial Statements. Huntington expects to recognize a right-of-use asset and a lease liability for its operating lease commitments.

ASU 2016-13 - Financial Instruments - Credit Losses. The amendments in this Update eliminate the probable recognition threshold for credit losses on financial assets measured at amortized cost. The Update requires those financial assets to be presented at the net amount expected to be collected (i.e., net of expected credit losses). The measurement of expected credit losses should be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. The Update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018. The amendments should be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. Management currently intends to adopt the guidance on January 1, 2020 and is assessing the impact of this Update on Huntington's Unaudited Consolidated Financial Statements. Management has formed a working group comprised of teams from different disciplines including credit and finance. The working group is currently evaluating the requirements of the new standard and the impact it will have on our processes. The early stages of this evaluation include a review of existing credit models to identify areas where existing credit models used to comply with other regulatory requirements may be leveraged and areas where new impairment models may be required.

ASU 2016-15 - Classification of Certain Cash Receipts and Cash Payments. The amendments in this Update add or clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. Current guidance lacks consistent principles for evaluating the classification of cash payments and receipts in the statement of cash flows. This has led to diversity in practice and, in certain circumstances, financial statement restatements. Therefore, the FASB issued the ASU with the intent of reducing diversity in practice with respect to several types of cash flows. The amendments in this Update are effective using a retrospective transition approach for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. This Update is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2017-04 - Simplifying the Test for Goodwill Impairment. The Update simplifies the goodwill impairment test. Under the new guidance, Step 2 of the goodwill impairment process that requires an entity to determine the implied fair value of its goodwill by assigning fair value to all its assets and liabilities, is eliminated. Instead, the entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The new guidance is effective for annual and interim goodwill tests performed in fiscal years beginning after December 15, 2019. Early adoption is permitted. The amendment is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2017-07 - Improving the Presentation of Net Periodic Pension Cost and Periodic Postretirement Benefit Cost. The amendments in this Update require that an employer report the service cost component of the pension cost and postretirement benefit cost in the same line items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of the net benefit cost should be presented in the income statement separately from the service cost component. The amendments in this Update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted as of the beginning of an annual period for which financial statements have not been issued or made available for issuance. This Update is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

ASU 2017-09 - Stock Compensation Modification Accounting. The Update reduces the current diversity in practice and provides explicit guidance pertaining to the provisions of modification accounting. The Update clarifies that an entity should account for effects of modification unless the fair value, vesting conditions and the classification of the modified award are the same as of the original awards immediately before the original award is modified. The Update is effective prospectively for annual periods and interim periods within those annual periods, beginning after December 15, 2017. Earlier application is permitted. The Update is not expected to have a significant impact on Huntington's Unaudited Consolidated Financial Statements.

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES (Tables)

6 Months Ended

Jun. 30, 2017

Receivables [Abstract]

Loan and Lease Portfolio

The following table provides a detailed listing of Huntington’s loan and lease portfolio at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	June 30, 2017			December 31, 2016
Loans and leases:
Commercial and industrial	$	27,969,151		$	28,058,712
Commercial real estate	7,145,151			7,300,901
Automobile	11,555,137			10,968,782
Home equity	9,965,534			10,105,774
Residential mortgage	8,237,297			7,724,961
RV and marine finance	2,177,732			1,846,447
Other consumer	1,009,308			956,419
Loans and leases	68,059,310			66,961,996
Allowance for loan and lease losses	(667,996		)	(638,413		)
Net loans and leases	$	67,391,314		$	66,323,583

Loans acquired with deteriorated credit quality

The following table presents a rollforward of the accretable yield for purchased credit impaired loans for the three-month and six-month period ended June 30, 2017: and 2016:

	Three Months Ended June 30,			Six Months Ended June 30,
(dollar amounts in thousands)	2017			2017
FirstMerit
Balance, beginning of period	$	37,372		$	36,669
Accretion	(4,788		)	(9,490		)
Reclassification (to) from nonaccretable difference	3,925			9,330
Balance, end of period	$	36,509		$	36,509

The following table reflects the ending and unpaid balances of the purchase credit impaired loans at June 30, 2017 and December 31, 2016:

	June 30, 2017						December 31, 2016
(dollar amounts in thousands)	Ending Balance		Unpaid Balance		ALLL		Ending Balance		Unpaid Balance		ALLL
FirstMerit
Commercial and industrial	$	54,942	$	81,934	$	970	$	68,338	$	100,031	$	—
Commercial real estate	20,780		34,904		—		34,042		56,320		—
Total	$	75,722	$	116,838	$	970	$	102,380	$	156,351	$	—

Loan Purchases and Sales

During the second quarter 2017, an allowance for loan losses was recorded on the Commercial and industrial purchased credit-impaired portfolio for $1 million.

NALs and Past Due Loans

The following table presents NALs by loan class at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	June 30, 2017		December 31, 2016
Commercial and industrial	$	195,279	$	234,184
Commercial real estate	16,763		20,508
Automobile	3,825		5,766
Home equity	67,940		71,798
Residential mortgage	80,306		90,502
RV and marine finance	341		245
Other consumer	2		—
Total nonaccrual loans	$	364,456	$	423,003

Aging analysis of loans and leases

The following table presents an aging analysis of loans and leases, including past due loans, by loan class at June 30, 2017 and December 31, 2016: (1)

	June 30, 2017
	Past Due												Loans Accounted for Under the Fair Value Option		Total Loans and Leases		90 or more days past due and accruing
(dollar amounts in thousands)	30-59 Days		60-89  Days		90 or  more days		Total		Current		Purchased Credit Impaired
Commercial and industrial	$	44,796	$	13,608	$	84,609	$	143,013	$	27,771,196	$	54,942	$	—	$	27,969,151	$	21,501	(2)
Commercial real estate	7,382		3,918		27,314		38,614		7,085,757		20,780		—		7,145,151		17,040
Automobile	68,600		15,241		8,716		92,557		11,461,169		—		1,411		11,555,137		8,594
Home equity	44,513		16,463		61,159		122,135		9,840,922		—		2,477		9,965,534		18,459
Residential mortgage	117,779		40,327		110,842		268,948		7,869,927		—		98,422		8,237,297		65,159		(3)
RV and marine finance	8,072		2,443		2,666		13,181		2,163,346		—		1,205		2,177,732		2,464
Other consumer	9,913		4,081		3,146		17,140		991,942		—		226		1,009,308		3,143
Total loans and leases	$	301,055	$	96,081	$	298,452	$	695,588	$	67,184,259	$	75,722	$	103,741	$	68,059,310	$	136,360

	December 31, 2016
	Past Due												Loans Accounted for Under the Fair Value Option		Total Loans and Leases		90 or more days past due and accruing
(dollar amounts in thousands)	30-59 Days		60-89  Days		90 or  more days		Total		Current		Purchased Credit Impaired
Commercial and industrial	42,052		20,136		74,174		136,362		27,854,012		68,338		—		28,058,712		18,148		(2)
Commercial real estate	21,187		3,202		29,659		54,048		7,212,811		34,042		—		7,300,901		17,215
Automobile loans	76,283		17,188		10,442		103,913		10,862,715		—		2,154		10,968,782		10,182
Home equity	38,899		23,903		53,002		115,804		9,986,697		—		3,273		10,105,774		11,508
Residential mortgage	122,469		37,460		116,682		276,611		7,373,414		—		74,936		7,724,961		66,952		(3)
RV and marine finance	10,009		2,230		1,566		13,805		1,831,123		—		1,519		1,846,447		1,462
Other consumer	9,442		4,324		3,894		17,660		938,322		—		437		956,419		3,895
Total loans and leases	$	320,341	$	108,443	$	289,419	$	718,203	$	66,059,094	$	102,380	$	82,319	$	66,961,996	$	129,362

(1) NALs are included in this aging analysis based on the loan’s past due status.

(2) Amounts include Huntington Technology Finance administrative lease delinquencies.

ALLL and AULC activity by portfolio segment

The following table presents ALLL and AULC activity by portfolio segment for the three-month and six-month periods ended June 30, 2017 and 2016:

(dollar amounts in thousands)	Commercial			Consumer			Total
Three-month period ended June 30, 2017:
ALLL balance, beginning of period	$	480,308		$	192,272		$	672,580
Loan charge-offs	(15,103		)	(41,345		)	(56,448		)
Recoveries of loans previously charged-off	5,787			14,621			20,408
Provision for (reduction in allowance) loan and lease losses	3,585			27,872			31,457
Allowance for loans sold or transferred to loans held for sale	(1		)	—			(1		)
ALLL balance, end of period	$	474,576		$	193,420		$	667,996
AULC balance, beginning of period	$	88,899		$	2,939		$	91,838
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(6,072		)	(407		)	(6,479		)
AULC balance, end of period	$	82,827		$	2,532		$	85,359
ACL balance, end of period	$	557,403		$	195,952		$	753,355
Six-month period ended June 30, 2017:
ALLL balance, beginning of period	$	451,091		$	187,322		$	638,413
Loan charge-offs	(38,773		)	(88,390		)	(127,163		)
Recoveries of loans previously charged-off	23,604			28,081			51,685
Provision for (reduction in allowance) loan and lease losses	38,729			66,407			105,136
Allowance for loans sold or transferred to loans held for sale	(75		)	—			(75		)
ALLL balance, end of period	$	474,576		$	193,420		$	667,996
AULC balance, beginning of period	$	86,543		$	11,336		$	97,879
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(3,716		)	(8,804		)	(12,520		)
AULC balance, end of period	$	82,827		$	2,532		$	85,359
ACL balance, end of period	$	557,403		$	195,952		$	753,355

(dollar amounts in thousands)	Commercial			Consumer			Total
Three-month period ended June 30, 2016:
ALLL balance, beginning of period	$	422,441		$	191,278		$	613,719
Loan charge-offs	(16,933		)	(26,612		)	(43,545		)
Recoveries of loans previously charged-off	13,904			12,886			26,790
Provision for (reduction in allowance) loan and lease losses	5,095			20,991			26,086
Allowance for loans sold or transferred to loans held for sale	—			14			14
ALLL balance, end of period	$	424,507		$	198,557		$	623,064
AULC balance, beginning of period	$	65,872		$	9,453		$	75,325
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(2,155		)	578			(1,577		)
AULC balance, end of period	$	63,717		$	10,031		$	73,748
ACL balance, end of period	$	488,224		$	208,588		$	696,812
Six-month period ended June 30, 2016:
ALLL balance, beginning of period	$	398,753		$	199,090		$	597,843
Loan charge-offs	(45,882		)	(57,355		)	(103,237		)
Recoveries of loans previously charged-off	53,815			24,115			77,930
Provision for (reduction in allowance) loan and lease losses	17,821			32,603			50,424
Allowance for loans sold or transferred to loans held for sale	—			104			104
ALLL balance, end of period	$	424,507		$	198,557		$	623,064
AULC balance, beginning of period	$	63,448		$	8,633		$	72,081
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	269			1,398			1,667
AULC balance, end of period	$	63,717		$	10,031		$	73,748
ACL balance, end of period	$	488,224		$	208,588		$	696,812

Loan and lease balances by credit quality indicator

The following table presents each loan and lease class by credit quality indicator at June 30, 2017 and December 31, 2016:

	June 30, 2017
	Credit Risk Profile by UCS Classification
(dollar amounts in thousands)	Pass		OLEM		Substandard		Doubtful		Total
Commercial
Commercial and industrial	$	26,006,917	$	798,643	$	1,138,508	$	25,083	$	27,969,151
Commercial real estate	6,923,159		88,932		132,017		1,043		7,145,151
	Credit Risk Profile by FICO Score (1), (2)
	750+		650-749		<650		Other (3)		Total
Consumer
Automobile	$	5,728,416	$	4,202,063	$	1,350,925	$	272,322	$	11,553,726
Home equity	6,296,801		3,013,152		619,661		33,443		9,963,057
Residential mortgage	4,945,403		2,449,297		610,720		133,455		8,138,875
RV and marine finance	1,287,480		774,873		85,844		28,330		2,176,527
Other consumer	386,659		481,324		135,161		5,938		1,009,082

	December 31, 2016
	Credit Risk Profile by UCS Classification
(dollar amounts in thousands)	Pass		OLEM		Substandard		Doubtful		Total
Commercial
Commercial and industrial	$	26,211,885	$	810,287	$	1,028,819	$	7,721	$	28,058,712
Commercial real estate	7,042,304		96,975		159,098		2,524		7,300,901
	Credit Risk Profile by FICO Score (1), (2)
	750+		650-749		<650		Other (3)		Total
Consumer
Automobile	$	5,369,085	$	4,043,611	$	1,298,460	$	255,472	$	10,966,628
Home equity	6,280,328		2,891,330		637,560		293,283		10,102,501
Residential mortgage	4,662,777		2,285,121		615,067		87,060		7,650,025
RV and marine finance	1,064,143		644,039		72,995		63,751		1,844,928
Other consumer	346,867		455,959		133,243		19,913		955,982

(1) Excludes loans accounted for under the fair value option.

(2) Reflects most recent customer credit scores.

(3) Reflects deferred fees and costs, loans in process, loans to legal entities, etc.

Summarized data for impaired loans and the related ALLL by portfolio segment

The following tables present the balance of the ALLL attributable to loans by portfolio segment individually and collectively evaluated for impairment and the related loan and lease balance at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	Commercial		Consumer		Total
ALLL at June 30, 2017:
Portion of ALLL balance:
Purchased credit-impaired loans	$	970	$	—	$	970
Attributable to loans individually evaluated for impairment	14,239		9,044		23,283
Attributable to loans collectively evaluated for impairment	459,367		184,376		643,743
Total ALLL balance	$	474,576	$	193,420	$	667,996
Loan and Lease Ending Balances at June 30, 2017: (1)
Portion of loan and lease ending balance:
Purchased credit-impaired loans	$	75,722	$	—	$	75,722
Individually evaluated for impairment	441,499		451,192		892,691
Collectively evaluated for impairment	34,597,081		32,390,075		66,987,156
Total loans and leases evaluated for impairment	$	35,114,302	$	32,841,267	$	67,955,569

(dollar amounts in thousands)	Commercial		Consumer		Total
ALLL at December 31, 2016
Portion of ALLL balance:
Attributable to loans individually evaluated for impairment	$	10,525	$	11,021	$	21,546
Attributable to loans collectively evaluated for impairment	440,566		176,301		616,867
Total ALLL balance:	$	451,091	$	187,322	$	638,413
Loan and Lease Ending Balances at December 31, 2016 (1)
Portion of loan and lease ending balances:
Purchased credit-impaired loans	$	102,380	$	—	$	102,380
Individually evaluated for impairment	415,624		457,890		873,514
Collectively evaluated for impairment	34,841,609		31,062,174		65,903,783
Total loans and leases evaluated for impairment	$	35,359,613	$	31,520,064	$	66,879,677

(1) Excludes loans accounted for under the fair value option.

Detailed impaired loan information by class

The following tables present by class the ending, unpaid principal balance, and the related ALLL, along with the average balance and interest income recognized only for impaired loans and leases and purchased credit-impaired loans: (1), (2)

	June 30, 2017						Three Months Ended June 30, 2017				Six Months Ended June 30, 2017
(dollar amounts in thousands)	Ending Balance		Unpaid Principal Balance (5)		Related Allowance		Average Balance		Interest Income Recognized		Average Balance		Interest Income Recognized
With no related allowance recorded:
Commercial and industrial	$	261,285	$	270,571	$	—	$	262,631	$	4,852	$	268,041	$	9,352
Commercial real estate	76,463		106,248		—		82,296		1,937		84,865		3,937
Automobile	—		—		—		—		—		—		—
Home equity	—		—		—		—		—		—		—
Residential mortgage	—		—		—		—		—		—		—
RV and marine finance	—		—		—		—		—		—		—
Other consumer	—		—		—		—		—		—		—
With an allowance recorded:
Commercial and industrial (3)	283,409		342,188		24,423		258,066		2,002		310,611		3,908
Commercial real estate (4)	34,270		41,695		2,340		38,753		453		58,563		920
Automobile	32,431		32,642		1,889		32,581		546		32,041		1,080
Home equity (6)	325,805		357,738		17,844		326,280		3,977		323,988		7,927
Residential mortgage (6)	329,050		363,277		11,578		339,289		2,903		335,444		6,013
RV and marine finance	1,331		1,355		134		1,009		23		672		34
Other consumer	4,126		4,126		253		4,186		55		4,090		111
Total
Commercial and industrial	544,694		612,759		24,423		520,697		6,854		578,652		13,260
Commercial real estate	110,733		147,943		2,340		121,049		2,390		143,428		4,857
Automobile	32,431		32,642		1,889		32,581		546		32,041		1,080
Home equity	325,805		357,738		17,844		326,280		3,977		323,988		7,927
Residential mortgage	329,050		363,277		11,578		339,289		2,903		335,444		6,013
RV and marine finance	1,331		1,355		134		1,009		23		672		34
Other consumer	4,126		4,126		253		4,186		55		4,090		111

	December 31, 2016						Three Months Ended June 30, 2016				Six Months Ended June 30, 2016
(dollar amounts in thousands)	Ending Balance		Unpaid Principal Balance (5)		Related Allowance		Average Balance		Interest Income Recognized		Average Balance		Interest Income Recognized
With no related allowance recorded:
Commercial and industrial	$	299,606	$	358,712	$	—	$	289,138	$	2,392	$	284,128	$	4,623
Commercial real estate	88,817		126,152		—		72,569		1,855		72,640		3,472
Automobile	—		—		—		—		—		—		—
Home equity	—		—		—		—		—		—		—
Residential mortgage	—		—		—		1,298		109		1,350		111
RV and marine finance	—		—		—		—		—		—		—
Other consumer	—		—		—		19		2		30		104
With an allowance recorded:
Commercial and industrial (3)	406,243		448,121		22,259		291,761		1,739		269,518		3,829
Commercial real estate (4)	97,238		107,512		3,434		58,357		615		69,501		1,373
Automobile	30,961		31,298		1,850		32,032		524		31,789		1,102
Home equity (6)	319,404		352,722		15,032		248,056		2,962		248,317		5,930
Residential mortgage (6)	327,753		363,099		12,849		352,489		3,027		357,324		6,064
RV and marine finance	—		—		—		—		—		—		—
Other consumer	3,897		3,897		260		4,812		53		4,754		120
Total
Commercial and industrial	705,849		806,833		22,259		580,899		4,131		553,646		8,452
Commercial real estate	186,055		233,664		3,434		130,926		2,470		142,141		4,845
Automobile	30,961		31,298		1,850		32,032		524		31,789		1,102
Home equity	319,404		352,722		15,032		248,056		2,962		248,317		5,930
Residential mortgage	327,753		363,099		12,849		353,787		3,136		358,674		6,175
RV and marine finance	—		—		—		—		—		—		—
Other consumer	3,897		3,897		260		4,831		55		4,784		224

(1) These tables do not include loans fully charged-off.

(2) All automobile, RV and marine finance and other consumer impaired loans included in these tables are considered impaired due to their status as a TDR.

(3) At June 30, 2017 and December 31, 2016, commercial and industrial loans of $115 million and $293 million, respectively, were considered impaired due to their status as a TDR.

(4) At June 30, 2017 and December 31, 2016, commercial real estate loans of $23 million and $81 million, respectively, were considered impaired due to their status as a TDR.

(5) The differences between the ending balance and unpaid principal balance amounts represent partial charge-offs.

(6) Includes home equity and residential mortgages considered to be collateral dependent as well as home equity and mortgage loans considered impaired due to their status as a TDR.

Detailed troubled debt restructuring information by class

The following table presents by class and modification type, the number of contracts, post-modification outstanding balance, and the financial effects of the modification for the three-month and six-month periods ended June 30, 2017 an 2016:

	New Troubled Debt Restructurings During The Three-Month Period Ended (1)
	June 30, 2017						June 30, 2016
(dollar amounts in thousands)	Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)			Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)
Commercial and industrial:
Interest rate reduction	1	$	18	$	—		1	$	22	$	—
Amortization or maturity date change	228	168,118		(6,856		)	199	133,933		(3,490		)
Other	1	220		—			2	232		—
Total Commercial and industrial	230	168,356		(6,856		)	202	134,187		(3,490		)
Commercial real estate:
Interest rate reduction	—	—		—			1	84		—
Amortization or maturity date change	19	25,027		(427		)	36	16,017		(723		)
Other	—	—		—			2	52		—
Total commercial real estate:	19	25,027		(427		)	39	16,153		(723		)
Automobile:
Interest rate reduction	5	58		1			3	64		5
Amortization or maturity date change	334	2,853		67			286	2,663		202
Chapter 7 bankruptcy	198	1,494		18			244	1,982		114
Other	—	—		—			—	—		—
Total Automobile	537	4,405		86			533	4,709		321
Home equity:
Interest rate reduction	9	506		6			9	627		26
Amortization or maturity date change	135	8,372		(754		)	127	6,401		(736		)
Chapter 7 bankruptcy	77	2,417		364			46	2,114		267
Other	12	512		—			—	—		—
Total Home equity	233	11,807		(384		)	182	9,142		(443		)
Residential mortgage:
Interest rate reduction	—	—		—			5	404		17
Amortization or maturity date change	81	8,296		(231		)	108	10,641		(420		)
Chapter 7 bankruptcy	25	1,981		(1		)	6	1,178		(49		)
Other	5	464		3			1	164		—
Total Residential mortgage	111	10,741		(229		)	120	12,387		(452		)
RV and marine finance:
Interest rate reduction	—	—		—			—	—		—
Amortization or maturity date change	10	150		4			—	—		—
Chapter 7 bankruptcy	34	544		6			—	—		—
Other	—	—		—			—	—		—
Total RV and marine finance	44	694		10			—	—		—
Other consumer:
Interest rate reduction	—	—		—			—	—		—
Amortization or maturity date change	2	21		—			1	4		—
Chapter 7 bankruptcy	2	8		—			—	—		—
Other	—	—		—			—	—		—
Total Other consumer	4	29		—			1	4		—
Total new troubled debt restructurings	1,178	$	221,059	$	(7,800	)	1,077	$	176,582	$	(4,787	)

	New Troubled Debt Restructurings During The Six-Month Period Ended (1)
	June 30, 2017						June 30, 2016
(dollar amounts in thousands)	Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)			Number of Contracts	Post-modification Outstanding Ending Balance		Financial effects of modification (2)
Commercial and industrial:
Interest rate reduction	2	$	37	$	6		2	$	39	$	(1	)
Amortization or maturity date change	464	280,543		(7,858		)	383	256,591		(2,918		)
Other	4	380		(27		)	10	1,090		(4		)
Total Commercial and industrial	470	280,960		(7,879		)	395	257,720		(2,923		)
Commercial real estate:
Interest rate reduction	—	—		—			1	84		—
Amortization or maturity date change	43	56,290		(815		)	60	49,812		(1,282		)
Other	—	—		—			4	315		16
Total commercial real estate:	43	56,290		(815		)	65	50,211		(1,266		)
Automobile:
Interest rate reduction	19	236		6			7	106		7
Amortization or maturity date change	811	7,154		178			707	6,564		422
Chapter 7 bankruptcy	438	3,316		47			561	4,544		229
Other	—	—		—			—	—		—
Total Automobile	1,268	10,706		231			1,275	11,214		658
Home equity:
Interest rate reduction	17	1,068		13			29	2,011		93
Amortization or maturity date change	241	13,868		(1,428		)	356	18,291		(2,018		)
Chapter 7 bankruptcy	164	6,036		1,402			145	5,711		1,000
Other	70	4,241		(326		)	—	—		—
Total Home equity	492	25,213		(339		)	530	26,013		(925		)
Residential mortgage:
Interest rate reduction	2	110		(9		)	10	1,061		(15		)
Amortization or maturity date change	180	19,367		(489		)	200	21,400		(997		)
Chapter 7 bankruptcy	49	4,672		(137		)	23	2,683		21
Other	21	2,384		17			1	164		—
Total Residential mortgage	252	26,533		(618		)	234	25,308		(991		)
RV and marine finance:
Interest rate reduction	—	—		—			—	—		—
Amortization or maturity date change	24	626		16			—	—		—
Chapter 7 bankruptcy	49	754		10			—	—		—
Other	—	—		—			—	—		—
Total RV and marine finance	73	1,380		26			—	—		—
Other consumer:
Interest rate reduction	1	78		2			—	—		—
Amortization or maturity date change	4	288		7			5	559		24
Chapter 7 bankruptcy	3	12		—			7	66		7
Other	—	—		—			—	—		—
Total Other consumer	8	378		9			12	625		31
Total new troubled debt restructurings	2,606	$	401,460	$	(9,385	)	2,511	$	371,091	$	(5,416	)

(1) TDRs may include multiple concessions and the disclosure classifications are based on the primary concession provided to the borrower.

(2)Amount represents the financial impact via provision for loan and lease losses as a result of the modificati

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AVAILABLE-FOR-SALE AND OTHER SECURITIES (Tables)

6 Months Ended

Jun. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Contractual maturities of investment securities

Listed below are the contractual maturities of available-for-sale and other securities at June 30, 2017 and December 31, 2016:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
U.S. Treasury, Federal agency, and other agency securities:
U.S. Treasury:
1 year or less	$	10,139	$	10,139	$	4,978	$	4,988
After 1 year through 5 years	502		505		502		509
After 5 years through 10 years	—		—		—		—
After 10 years	—		—		—		—
Total U.S. Treasury	10,641		10,644		5,480		5,497
Federal agencies: mortgage-backed securities:
1 year or less	—		—		—		—
After 1 year through 5 years	28,085		27,891		46,591		46,762
After 5 years through 10 years	200,334		199,224		173,941		176,404
After 10 years	10,536,086		10,396,940		10,630,929		10,450,176
Total Federal agencies: mortgage-backed securities	10,764,505		10,624,055		10,851,461		10,673,342
Other agencies:
1 year or less	4,103		4,142		4,302		4,367
After 1 year through 5 years	9,498		9,647		5,092		5,247
After 5 years through 10 years	86,049		86,502		63,618		63,928
After 10 years	—		—		—		—
Total other agencies	99,650		100,291		73,012		73,542
Total U.S. Treasury, Federal agency, and other agency securities	10,874,796		10,734,990		10,929,953		10,752,381
Municipal securities:
1 year or less	120,216		121,345		169,636		166,887
After 1 year through 5 years	1,113,974		1,123,450		933,893		933,903
After 5 years through 10 years	1,493,652		1,508,930		1,463,459		1,464,583
After 10 years	555,096		558,775		693,440		684,684
Total municipal securities	3,282,938		3,312,500		3,260,428		3,250,057
Asset-backed securities:
1 year or less	—		—		—		—
After 1 year through 5 years	80,018		80,177		80,700		80,560
After 5 years through 10 years	144,969		146,256		223,352		224,565
After 10 years	389,154		368,366		520,072		488,356
Total asset-backed securities	614,141		594,799		824,124		793,481
Corporate debt:
1 year or less	3,238		3,268		43,223		43,603
After 1 year through 5 years	64,369		65,808		78,430		80,196
After 5 years through 10 years	49,546		51,878		32,523		32,865
After 10 years	21,386		23,081		40,361		42,019
Total corporate debt	138,539		144,035		194,537		198,683
Other:
1 year or less	3,151		3,142		1,650		1,650
After 1 year through 5 years	800		790		2,302		2,283
After 5 years through 10 years	—		—		—		—
After 10 years	94		94		10		10
Nonmarketable equity securities	585,472		585,471		547,704		547,704
Mutual funds	11,184		11,184		15,286		15,286
Marketable equity securities	861		1,301		861		1,302
Total other	601,562		601,982		567,813		568,235
Total available-for-sale and other securities	$	15,511,976	$	15,388,306	$	15,776,855	$	15,562,837

Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income

The following tables provide amortized cost, fair value, and gross unrealized gains and losses recognized in OCI by investment category at June 30, 2017 and December 31, 2016:

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
June 30, 2017
U.S. Treasury	$	10,641	$	3	$	—		$	10,644
Federal agencies:
Mortgage-backed securities	10,764,505		8,652		(149,102		)	10,624,055
Other agencies	99,650		689		(48		)	100,291
Total U.S. Treasury, Federal agency securities	10,874,796		9,344		(149,150		)	10,734,990
Municipal securities	3,282,938		47,711		(18,149		)	3,312,500
Asset-backed securities	614,141		2,256		(21,598		)	594,799
Corporate debt	138,539		5,500		(4		)	144,035
Other securities	601,562		439		(19		)	601,982
Total available-for-sale and other securities	$	15,511,976	$	65,250	$	(188,920	)	$	15,388,306

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
December 31, 2016
U.S. Treasury	$	5,480	$	17	$	—		$	5,497
Federal agencies:
Mortgage-backed securities	10,851,461		12,548		(190,667		)	10,673,342
Other agencies	73,012		536		(6		)	73,542
Total U.S. Treasury, Federal agency securities	10,929,953		13,101		(190,673		)	10,752,381
Municipal securities	3,260,428		28,431		(38,802		)	3,250,057
Asset-backed securities	824,124		1,492		(32,135		)	793,481
Corporate debt	194,537		4,161		(15		)	198,683
Other securities	567,813		441		(19		)	568,235
Total available-for-sale and other securities	$	15,776,855	$	47,626	$	(261,644	)	$	15,562,837

Available for sale securities in an unrealized loss position table text block

The following tables provide detail on investment securities with unrealized gross losses aggregated by investment category and the length of time the individual securities have been in a continuous loss position, at June 30, 2017 and December 31, 2016:

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
June 30, 2017
Federal agencies:
Mortgage-backed securities	$	8,879,526	$	(147,900	)	$	42,504	$	(1,202	)	$	8,922,030	$	(149,102	)
Other agencies	12,793		(48		)	—		—			12,793		(48		)
Total Federal agency securities	8,892,319		(147,948		)	42,504		(1,202		)	8,934,823		(149,150		)
Municipal securities	702,379		(11,895		)	241,487		(6,254		)	943,866		(18,149		)
Asset-backed securities	177,834		(1,348		)	173,808		(20,250		)	351,642		(21,598		)
Corporate debt	595		(4		)	200		—			795		(4		)
Other securities	790		(10		)	1,491		(9		)	2,281		(19		)
Total temporarily impaired securities	$	9,773,917	$	(161,205	)	$	459,490	$	(27,715	)	$	10,233,407	$	(188,920	)

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
December 31, 2016
Federal agencies:
Mortgage-backed securities	$	8,908,470	$	(189,318	)	$	41,706	$	(1,349	)	$	8,950,176	$	(190,667	)
Other agencies	924		(6		)	—		—			924		(6		)
Total Federal agency securities	8,909,394		(189,324		)	41,706		(1,349		)	8,951,100		(190,673		)
Municipal securities	1,412,152		(29,175		)	272,292		(9,627		)	1,684,444		(38,802		)
Asset-backed securities	361,185		(3,043		)	178,924		(29,092		)	540,109		(32,135		)
Corporate debt	3,567		(15		)	200		—			3,767		(15		)
Other securities	790		(11		)	1,492		(8		)	2,282		(19		)
Total temporarily impaired securities	$	10,687,088	$	(221,568	)	$	494,614	$	(40,076	)	$	11,181,702	$	(261,644	)

Realized securities gains and losses

The following table is a summary of realized securities gains and losses for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Gross gains on sales of securities	$	3,814		$	3,391		$	4,359		$	3,391
Gross (losses) on sales of securities	(120		)	(2,659		)	(649		)	(2,659		)
Net gain on sales of securities	$	3,694		$	732		$	3,710		$	732
OTTI recognized in earnings	(3,559		)	(76		)	(3,583		)	(76		)
Net security gains (losses)	$	135		$	656		$	127		$	656

Trust Preferred Securities Data

The following table summarizes the relevant characteristics of the Company's CDO securities portfolio, which are included in asset-backed securities, at June 30, 2017. Each security is part of a pool of issuers and supports a more senior tranche of securities except for the MM Comm III securities which are the most senior class.

Collateralized Debt Obligation Securities

(dollar amounts in thousands)

Deal Name	Par Value		Amortized Cost		Fair Value		Unrealized Loss (2)			Lowest Credit Rating (3)	# of Issuers Currently Performing/ Remaining (4)	Actual Deferrals and Defaults as a % of Original Collateral	Expected Defaults as a % of Remaining Performing Collateral	Excess Subordination (5)
MM Comm III	4,509		4,308		3,581		(727		)	BB+	5/8	5	5	39
Pre TSL IX (1)	5,000		3,955		3,275		(680		)	C	27/37	16	8	11
Pre TSL XI (1)	25,000		19,239		15,867		(3,372		)	C	42/51	14	8	14
Reg Diversified	25,500		510		510		—			D	21/36	32	8	—
Tropic III	31,000		31,000		19,342		(11,658		)	BB	27/36	16	7	41
Total at June 30, 2017	$	91,009	$	59,012	$	42,575	$	(16,437	)
Total at December 31, 2016	$	137,197	$	101,210	$	76,003	$	(25,207	)

(1) Security was determined to have OTTI. As such, the amortized cost is net of recorded credit impairment.

(2) The majority of securities have been in a continuous loss position for 12 months or longer.

(3) For purposes of comparability, the lowest credit rating expressed is equivalent to Fitch ratings even where the lowest rating is based on another nationally recognized credit rating agency.

(4) Includes both banks and/or insurance companies.

(5) Excess subordination percentage represents the additional defaults in excess of both current and projected defaults that the CDO can absorb before the bond experiences credit impairment. Excess subordinated percentage is calculated by (a) determining what percentage of defaults a deal can experience before the bond has credit impairment, and (b) subtracting from this default breakage percentage both total current and expected future default percentages.

Schedule of other than temporary impairment

For the three-month and six-month periods ended June 30, 2017 and 2016, the following table summarizes by security type the total OTTI losses recognized in the Unaudited Condensed Consolidated Statements of Income for securities evaluated for impairment as described above.

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Available-for-sale and other securities:
Collateralized Debt Obligations	$	3,559	$	—	$	3,559	$	—
Municipal Securities	—		76		24		76
Total available-for-sale and other securities	$	3,559	$	76	$	3,583	$	76

The following table presents the OTTI recognized in earnings on debt securities held by Huntington for the three-month and six-month periods ended June 30, 2017 and 2016 as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016			2017			2016
Balance, beginning of period	$	7,262	$	18,368		$	11,796		$	18,368
Reductions from sales	—		(8,613		)	(4,558		)	(8,613		)
Additional credit losses	3,559		76			3,583			76
Balance, end of period	$	10,821	$	9,831		$	10,821		$	9,831

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HELD-TO-MATURITY SECURITIES (Tables)

6 Months Ended

Jun. 30, 2017

Held-to-maturity Securities [Abstract]

Contractual maturities of held-to-maturity securities

Listed below are the contractual maturities of held-to-maturity securities at June 30, 2017 and December 31, 2016:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Federal agencies: mortgage-backed securities:
1 year or less	$	—	$	—	$	—	$	—
After 1 year through 5 years	—		—		—		—
After 5 years through 10 years	70,527		70,355		41,261		40,791
After 10 years	7,634,775		7,616,513		7,157,083		7,139,943
Total Federal agencies: mortgage-backed securities	7,705,302		7,686,868		7,198,344		7,180,734
Other agencies:
1 year or less	—		—		—		—
After 1 year through 5 years	—		—		—		—
After 5 years through 10 years	376,837		376,750		398,341		399,452
After 10 years	191,592		190,149		204,083		201,180
Total other agencies	568,429		566,899		602,424		600,632
Total U.S. Government backed agencies	8,273,731		8,253,767		7,800,768		7,781,366
Municipal securities:
1 year or less	—		—		—		—
After 1 year through 5 years	—		—		—		—
After 5 years through 10 years	—		—		—		—
After 10 years	5,846		5,635		6,171		5,902
Total municipal securities	5,846		5,635		6,171		5,902
Total held-to-maturity securities	$	8,279,577	$	8,259,402	$	7,806,939	$	7,787,268

Amortized cost, gross unrealized gains and losses, and fair value by investment category

The following table provides amortized cost, gross unrealized gains and losses, and fair value by investment category at June 30, 2017 and December 31, 2016:

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
June 30, 2017
Federal agencies:
Mortgage-backed securities	$	7,705,302	$	17,950	$	(36,384	)	$	7,686,868
Other agencies	568,429		1,374		(2,904		)	566,899
Total U.S. Government backed agencies	8,273,731		19,324		(39,288		)	8,253,767
Municipal securities	5,846		—		(211		)	5,635
Total held-to-maturity securities	$	8,279,577	$	19,324	$	(39,499	)	$	8,259,402

			Unrealized
(dollar amounts in thousands)	Amortized Cost		Gross Gains		Gross Losses			Fair Value
December 31, 2016
Federal agencies:
Mortgage-backed securities	$	7,198,344	$	20,883	$	(38,493	)	$	7,180,734
Other agencies	602,424		1,690		(3,482		)	600,632
Total U.S. Government backed agencies	7,800,768		22,573		(41,975		)	7,781,366
Municipal securities	6,171		—		(269		)	5,902
Total held-to-maturity securities	$	7,806,939	$	22,573	$	(42,244	)	$	7,787,268

Investment securities in an unrealized loss position

The following tables provide detail on held-to-maturity securities with unrealized gross losses aggregated by investment category and the length of time the individual securities have been in a continuous loss position, at June 30, 2017 and December 31, 2016:

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
June 30, 2017
Federal agencies:
Mortgage-backed securities	$	4,606,283	$	(31,348	)	$	160,437	$	(5,036	)	$	4,766,720	$	(36,384	)
Other agencies	375,023		(2,904		)	—		—			375,023		(2,904		)
Total U.S. Government backed securities	4,981,306		(34,252		)	160,437		(5,036		)	5,141,743		(39,288		)
Municipal securities	5,635		(211		)	—		—			5,635		(211		)
Total temporarily impaired securities	$	4,986,941	$	(34,463	)	$	160,437	$	(5,036	)	$	5,147,378	$	(39,499	)

	Less than 12 Months					Over 12 Months					Total
(dollar amounts in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
December 31, 2016
Federal agencies:
Mortgage-backed securities	$	2,855,360	$	(31,470	)	$	186,226	$	(7,023	)	$	3,041,586	$	(38,493	)
Other agencies	413,207		(3,482		)	—		—			413,207		(3,482		)
Total U.S. Government backed securities	3,268,567		(34,952		)	186,226		(7,023		)	3,454,793		(41,975		)
Municipal securities	5,902		(269		)	—		—			5,902		(269		)
Total temporarily impaired securities	$	3,274,469	$	(35,221	)	$	186,226	$	(7,023	)	$	3,460,695	$	(42,244	)

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LOAN SALES AND SECURITIZATIONS (Tables)

6 Months Ended

Jun. 30, 2017

Transfers and Servicing [Abstract]

Summarizes activity relating to loans securitized sold with servicing retained

The following table summarizes activity relating to SBA loans sold with servicing retained for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
SBA loans sold with servicing retained	$	87,705	$	58,629	$	165,377	$	104,518
Pretax gains resulting from above loan sales (1)	7,109		4,662		12,927		8,183

(1) Recorded in gain on sale of loans.

The following table summarizes activity relating to residential mortgage loans sold with servicing retained for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Residential mortgage loans sold with servicing retained	$	798,399	$	715,589	$	1,645,752	$	1,348,055
Pretax gains resulting from above loan sales (1)	16,943		18,618		39,133		32,731

(1) Recorded in mortgage banking income.

Summarizes activity relating to loans sold with servicing retained using the fair value method

The following tables summarize the changes in MSRs recorded using either the fair value method or the amortization method for the three-month and six-month periods ended June 30, 2017 and 2016:

Fair Value Method:	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Fair value, beginning of period	$	13,307		$	14,819		$	13,747		$	17,585
Change in fair value during the period due to:
Time decay (1)	(217		)	(245		)	(448		)	(518		)
Payoffs (2)	(217		)	(465		)	(581		)	(969		)
Changes in valuation inputs or assumptions (3)	(345		)	(1,004		)	(190		)	(2,993		)
Fair value, end of period:	$	12,528		$	13,105		$	12,528		$	13,105
Weighted-average life (years)	5.7			5.1			5.7			5.1

(1) Represents decrease in value due to passage of time, including the impact from both regularly scheduled loan principal payments and partial loan paydowns.

(2) Represents decrease in value associated with loans that paid off during the period.

(3) Represents change in value resulting primarily from market-driven changes in interest rates and prepayment speeds.

Summarizes activity relating to loans sold with servicing retained using the amortization method

Amortization Method:	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Carrying value, beginning of period	$	177,812		$	127,275		$	172,466		$	143,133
New servicing assets created	8,218			7,277			17,853			13,386
Impairment (charge) / recovery	(2,806		)	(7,295		)	(1,007		)	(23,635		)
Amortization and other	(6,733		)	(5,965		)	(12,821		)	(11,592		)
Carrying value, end of period	$	176,491		$	121,292		$	176,491		$	121,292
Fair value, end of period	$	177,138		$	121,464		$	177,138		$	121,464
Weighted-average life (years)	7.1			6.1			7.1			6.1

Changes in the carrying value of automobile loan servicing rights for the three-month and six-month periods ended June 30, 2017 and 2016, and the fair value at the end of each period were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Carrying value, beginning of period	$	15,159		$	7,029		$	18,285		$	8,771
Amortization and other	(2,635		)	(1,571		)	(5,761		)	(3,313		)
Carrying value, end of period	$	12,524		$	5,458		$	12,524		$	5,458
Fair value, end of period	$	12,571		$	5,551		$	12,571		$	5,551
Weighted-average contractual life (years)	3.8			3.0			3.8			3.0

The following tables summarize the changes in the carrying value of the servicing asset for the three-month and six-month periods ended June 30, 2017 and 2016, and the fair value at the end of each period were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Carrying value, beginning of period	$	21,399		$	19,526		$	21,080		$	19,747
New servicing assets created	4,121			1,868			5,596			3,380
Amortization and other	(2,407		)	(1,782		)	(3,563		)	(3,515		)
Carrying value, end of period	$	23,113		$	19,612		$	23,113		$	19,612
Fair value, end of period	$	26,853		$	23,823		$	26,853		$	23,823
Weighted-average life (years)	3.3			3.3			3.3			3.3

Summary of key assumptions and the sensitivity of the servicing rights value to changes in the assumptions

A summary of key assumptions and the sensitivity of the automobile loan servicing rights value to changes in these assumptions at June 30, 2017 and December 31, 2016 follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	19.91	%	$	(688	)	$	(1,391	)	19.98	%	$	(1,047	)	$	(2,026	)
Spread over forward interest rate swap rates	500 bps		(17		)	(34		)	500 bps		(26		)	(53		)

For MSRs under the fair value method, a summary of key assumptions and the sensitivity of the MSR value at June 30, 2017 and December 31, 2016, to changes in these assumptions follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	11.40	%	$	(476	)	$	(919	)	10.90	%	$	(501	)	$	(970	)
Spread over forward interest rate swap rates	876 bps		(463		)	(874		)	536 bps		(454		)	(879		)

For MSRs under the amortization method, a summary of key assumptions and the sensitivity of the MSR value at June 30, 2017 and December 31, 2016, to changes in these assumptions follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	8.20	%	$	(4,731	)	$	(9,191	)	7.80	%	$	(4,510	)	$	(8,763	)
Spread over forward interest rate swap rates	1,084 bps		(6,566		)	(12,374		)	1,173 bps		(5,259		)	(10,195		)

A summary of key assumptions and the sensitivity of the SBA loan servicing rights value to changes in these assumptions at June 30, 2017 and December 31, 2016 follows:

	June 30, 2017								December 31, 2016
			Decline in fair value due to								Decline in fair value due to
(dollar amounts in thousands)	Actual		10% adverse change			20% adverse change			Actual		10% adverse change			20% adverse change
Constant prepayment rate (annualized)	7.50	%	$	(363	)	$	(721	)	7.40	%	$	(324	)	$	(644	)
Discount rate	15.00		(721		)	(1,411		)	15.00		(1,270		)	(1,870		)

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OTHER COMPREHENSIVE INCOME (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Components of other comprehensive income

The components of other comprehensive income for the three-month and six-month periods ended June 30, 2017 and 2016, were as follows:

	Three Months Ended June 30, 2017
	Tax (Expense)
(dollar amounts in thousands)	Pretax		Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	2,478	$	(876	)	$	1,602
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	53,285		(18,811		)	34,474
Less: Reclassification adjustment for net losses (gains) included in net income	3,988		(1,410		)	2,578
Net change in unrealized holding gains (losses) on available-for-sale debt securities	59,751		(21,097		)	38,654
Net change in unrealized holding gains (losses) on available-for-sale equity securities	—		—			—
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	1,220		(427		)	793
Less: Reclassification adjustment for net (gains) losses included in net income	427		(150		)	277
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	1,647		(577		)	1,070
Net change in pension and other post-retirement obligations	1,198		(419		)	779
Total other comprehensive income (loss)	$	62,596	$	(22,093	)	$	40,503

	Three Months Ended June 30, 2016
	Tax (Expense)
(dollar amounts in thousands)	Pretax			Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	1,032		$	(365	)	$	667
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	50,278			(18,234		)	32,044
Less: Reclassification adjustment for net losses (gains) included in net income	(2,294		)	811			(1,483		)
Net change in unrealized holding gains (losses) on available-for-sale debt securities	49,016			(17,788		)	31,228
Net change in unrealized holding gains (losses) on available-for-sale equity securities	66			(24		)	42
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	1,989			(696		)	1,293
Less: Reclassification adjustment for net (gains) losses included in net income	(248		)	89			(159		)
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	1,741			(607		)	1,134
Net change in pension and other post-retirement obligations	1,293			(453		)	840
Total other comprehensive income (loss)	$	52,116		$	(18,872	)	$	33,244

	Six Months Ended June 30, 2017
	Tax (expense)
(dollar amounts in thousands)	Pretax			Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	3,288		$	(1,162	)	$	2,126
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	62,282			(21,607		)	40,675
Less: Reclassification adjustment for net losses (gains) included in net income	9,862			(3,487		)	6,375
Net change in unrealized holding gains (losses) on available-for-sale debt securities	75,432			(26,256		)	49,176
Net change in unrealized holding gains (losses) on available-for-sale equity securities	—			—			—
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	(611		)	214			(397		)
Less: Reclassification adjustment for net (gains) losses included in net income	987			(346		)	641
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	376			(132		)	244
Net change in pension and other post-retirement obligations	1,906			(667		)	1,239
Total other comprehensive income (loss)	$	77,714		$	(27,055	)	$	50,659

	Six Months Ended June 30, 2016
	Tax (expense)
(dollar amounts in thousands)	Pretax			Benefit			After-tax
Noncredit-related impairment recoveries (losses) on debt securities not expected to be sold	$	(2,602	)	$	920		$	(1,682	)
Unrealized holding gains (losses) on available-for-sale debt securities arising during the period	130,746			(46,919		)	83,827
Less: Reclassification adjustment for net losses (gains) included in net income	(2,758		)	975			(1,783		)
Net change in unrealized holding gains (losses) on available-for-sale debt securities	125,386			(45,024		)	80,362
Net change in unrealized holding gains (losses) on available-for-sale equity securities	170			(60		)	110
Unrealized gains (losses) on derivatives used in cash flow hedging relationships arising during the period	16,218			(5,676		)	10,542
Less: Reclassification adjustment for net (gains) losses included in net income	(892		)	313			(579		)
Net change in unrealized gains (losses) on derivatives used in cash flow hedging relationships	15,326			(5,363		)	9,963
Net change in pension and other post-retirement obligations	2,586			(905		)	1,681
Total other comprehensive income (loss)	$	143,468		$	(51,352	)	$	92,116

Activity in accumulated other comprehensive income, net of tax

The following table presents activity in accumulated other comprehensive income (loss), net of tax, for the six-month periods ended June 30, 2017 and 2016:

(dollar amounts in thousands)	Unrealized gains and (losses) on debt securities (1)			Unrealized gains and (losses) on equity securities		Unrealized gains and (losses) on cash flow hedging derivatives			Unrealized gains (losses) for pension and other post- retirement obligations			Total
December 31, 2015	$	8,361		$	176	$	(3,948	)	$	(230,747	)	$	(226,158	)
Other comprehensive income before reclassifications	82,145			110		10,542			—			92,797
Amounts reclassified from accumulated OCI to earnings	(1,783		)	—		(579		)	1,681			(681		)
Period change	80,362			110		9,963			1,681			92,116
June 30, 2016	$	88,723		$	286	$	6,015		$	(229,066	)	$	(134,042	)
December 31, 2016	$	(192,764	)	$	287	$	(2,634	)	$	(205,905	)	$	(401,016	)
Other comprehensive income before reclassifications	42,801			—		(397		)	—			42,404
Amounts reclassified from accumulated OCI to earnings	6,375			—		641			1,239			8,255
Period change	49,176			—		244			1,239			50,659
June 30, 2017	$	(143,588	)	$	287	$	(2,390	)	$	(204,666	)	$	(350,357	)

Reclassification Out Of Accumulated OCI

The following table presents the reclassification adjustments out of accumulated OCI included in net income and the impacted line items as listed on the Unaudited Condensed Consolidated Statements of Income for the three-month and six-month periods ended June 30, 2017 and 2016:

	Reclassifications out of accumulated OCI
Accumulated OCI components	Amounts reclassified from accumulated OCI						Location of net gain (loss) reclassified from accumulated OCI into earnings
	Three Months Ended
(dollar amounts in thousands)	June 30, 2017			June 30, 2016
Gains (losses) on debt securities:
Amortization of unrealized gains (losses)	$	(2,284	)	$	740		Interest income - held-to-maturity securities - taxable
Realized gain (loss) on sale of securities	1,855			1,630			Noninterest income - net gains (losses) on sale of securities
OTTI recorded	(3,559		)	(76		)	Noninterest income - net gains (losses) on sale of securities
	(3,988		)	2,294			Total before tax
	1,410			(811		)	Tax (expense) benefit
	$	(2,578	)	$	1,483		Net of tax
Gains (losses) on cash flow hedging relationships:
Interest rate contracts	$	(427	)	$	248		Interest income - loans and leases
Interest rate contracts	—			—			Noninterest income - other income
	(427		)	248			Total before tax
	150			(89		)	Tax (expense) benefit
	$	(277	)	$	159		Net of tax
Amortization of defined benefit pension and post-retirement items:
Actuarial gains (losses)	$	(1,690	)	$	(1,785	)	Noninterest expense - personnel costs
Prior service credit	492			492			Noninterest expense - personnel costs
	(1,198		)	(1,293		)	Total before tax
	419			453			Tax (expense) benefit
	$	(779	)	$	(840	)	Net of tax

	Reclassifications out of accumulated OCI
Accumulated OCI components	Amounts reclassified from accumulated OCI						Location of net gain (loss) reclassified from accumulated OCI into earnings
	Six Months Ended
(dollar amounts in thousands)	June 30, 2017			June 30, 2016
Gains (losses) on debt securities:
Amortization of unrealized gains (losses)	$	(5,890	)	$	1,204		Interest income - held-to-maturity securities - taxable
Realized gain (loss) on sale of securities	(389		)	1,630			Noninterest income - net gains (losses) on sale of securities
OTTI recorded	(3,583		)	(76		)	Noninterest income - net gains (losses) on sale of securities
	(9,862		)	2,758			Total before tax
	3,487			(975		)	Tax (expense) benefit
	$	(6,375	)	$	1,783		Net of tax
Gains (losses) on cash flow hedging relationships:
Interest rate contracts	$	(987	)	$	893		Interest income - loans and leases
Interest rate contracts	—			(1		)	Noninterest income - other income
	(987		)	892			Total before tax
	346			(313		)	Tax (expense) benefit
	$	(641	)	$	579		Net of tax
Amortization of defined benefit pension and post-retirement items:
Actuarial gains (losses)	$	(2,890	)	$	(3,570	)	Noninterest expense - personnel costs
Prior service credit	984			984			Noninterest expense - personnel costs
	(1,906		)	(2,586		)	Total before tax
	667			905			Tax (expense) benefit
	$	(1,239	)	$	(1,681	)	Net of tax

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EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Basic and diluted earnings loss per share

The calculation of basic and diluted earnings per share for the three and six-month periods ended June 30, 2017 and 2016, was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands, except per share amounts)	2017			2016			2017			2016
Basic earnings per common share:
Net income	$	271,741		$	174,540		$	479,835		$	345,854
Preferred stock dividends	(18,889		)	(19,874		)	(37,767		)	(27,872		)
Net income available to common shareholders	$	252,852		$	154,666		$	442,068		$	317,982
Average common shares issued and outstanding	1,088,934			798,167			1,087,654			796,961
Basic earnings per common share	$	0.23		$	0.19		$	0.41		$	0.40
Diluted earnings per common share:
Net income available to common shareholders	$	252,852		$	154,666		$	442,068		$	317,982
Effect of assumed preferred stock conversion	—			—			—			—
Net income applicable to diluted earnings per share	$	252,852		$	154,666		$	442,068		$	317,982
Average common shares issued and outstanding	1,088,934			798,167			1,087,654			796,961
Dilutive potential common shares:
Stock options and restricted stock units and awards	16,329			9,785			17,734			10,085
Shares held in deferred compensation plans	3,108			2,282			3,030			2,178
Other	156			137			154			136
Dilutive potential common shares:	19,593			12,204			20,918			12,399
Total diluted average common shares issued and outstanding	1,108,527			810,371			1,108,572			809,360
Diluted earnings per common share	$	0.23		$	0.19		$	0.40		$	0.39

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BENEFIT PLANS (Tables)

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The following table shows the components of net periodic (benefit) cost for all plans:

	Pension Benefits								Post-Retirement Benefits
	Three Months Ended June 30,								Three Months Ended June 30,
(dollar amounts in thousands)	2017					2016			2017					2016
Service cost	$	640				$	1,025		$	21				$	—
Interest cost	7,478					6,748			99					54
Expected return on plan assets	(13,803		)			(10,224		)	—					—
Amortization of prior service cost	—					—			(492		)			(492		)
Amortization of (gain) loss	1,747					1,865			(54		)			(72		)
Settlements	2,500					3,400			—					—
Net periodic (benefit) cost	$	(1,438	)	(1	)	$	2,814		$	(426	)	(1	)	$	(510	)

(1) Includes expense associated with FirstMerit plans.

	Pension Benefits								Post-Retirement Benefits
	Six Months Ended June 30,								Six Months Ended June 30,
(dollar amounts in thousands)	2017					2016			2017					2016
Service cost	$	1,280				$	2,050		$	43				$	—
Interest cost	14,955					13,496			198					109
Expected return on plan assets	(27,606		)			(20,447		)	—					—
Amortization of prior service cost	—					—			(984		)			(984		)
Amortization of (gain) loss	3,494					3,729			(109		)			(144		)
Settlements	5,000					6,800			—					—
Net periodic (benefit) cost	$	(2,877	)	(1	)	$	5,628		$	(852	)	(1	)	$	(1,019	)

(1) Includes expense associated with FirstMerit plans.

Schedule of Costs of Retirement Plans

defined contribution plans during the second quarter 2017 and 2016 was $11 million and $8 million, respectively. For the six-month periods ended June 30, 2017 and 2016, expense related to the defined contribution plans were $22 million and $16 million, respectively.

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FAIR VALUES OF ASSETS AND LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value on a recurring basis

Assets and Liabilities measured at fair value on a recurring basis

Assets and liabilities measured at fair value on a recurring basis at June 30, 2017 and December 31, 2016 are summarized below:

	Fair Value Measurements at Reporting Date Using						Netting Adjustments (1)			June 30, 2017
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Assets
Loans held for sale	$	—	$	654,087	$	—	$	—		$	654,087
Loans held for investment	—		59,886		43,855		—			103,741
Trading account securities:
Federal agencies: Other agencies	—		6,868		—		—			6,868
Municipal securities	—		323		—		—			323
Other securities	86,560		1,016		—		—			87,576
	86,560		8,207		—		—			94,767
Available-for-sale and other securities:
U.S. Treasury securities	10,644		—		—		—			10,644
Federal agencies: Mortgage-backed	—		10,624,055		—		—			10,624,055
Federal agencies: Other agencies	—		100,291		—		—			100,291
Municipal securities	—		440,493		2,872,007		—			3,312,500
Asset-backed securities	—		552,224		42,575		—			594,799
Corporate debt	—		144,035		—		—			144,035
Other securities	12,485		4,026		—		—			16,511
	23,129		11,865,124		2,914,582		—			14,802,835
MSRs	—		—		12,528		—			12,528
Derivative assets	—		325,736		9,227		(144,951		)	190,012
Liabilities
Derivative liabilities	—		284,796		6,049		(212,487		)	78,358
Short-term borrowings	4,580		—		—		—			4,580

	Fair Value Measurements at Reporting Date Using						Netting Adjustments (1)			December 31, 2016
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Assets
Loans held for sale	$	—	$	438,224	$	—	$	—		$	438,224
Loans held for investment	—		34,439		47,880		—			82,319
Trading account securities:
Municipal securities	—		1,148		—		—			1,148
Other securities	132,147		—		—		—			132,147
	132,147		1,148		—		—			133,295
Available-for-sale and other securities:
U.S. Treasury securities	5,497		—		—		—			5,497
Federal agencies: Mortgage-backed	—		10,673,342		—		—			10,673,342
Federal agencies: Other agencies	—		73,542		—		—			73,542
Municipal securities	—		452,013		2,798,044		—			3,250,057
Asset-backed securities	—		717,478		76,003		—			793,481
Corporate debt	—		198,683		—		—			198,683
Other securities	16,588		3,943		—		—			20,531
	22,085		12,119,001		2,874,047		—			15,015,133
MSRs	—		—		13,747		—			13,747
Derivative assets	—		414,412		5,747		(181,940		)	238,219
Liabilities
Derivative liabilities	—		362,777		7,870		(272,361		)	98,286
Short-term borrowings	474		—		—		—			474

(1) Amounts represent the impact of legally enforceable master netting agreements that allow the Company to settle positive and negative positions and cash collateral held or placed with the same counterparties.

Rollforward of financial instruments measured on a recurring basis and classified as Level 3

	Level 3 Fair Value Measurements Three Months Ended June 30, 2017
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	13,307		$	2,694		$	2,867,652		$	59,492		$	44,219
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(2,124		)	—			—			—
Total gains/losses for the period:
Included in earnings	(779		)	2,608			(1,180		)	(3,557		)	1,493
Included in OCI	—			—			12,419			5,598			—
Purchases/originations	—			—			114,944			—			—
Sales	—			—			—			(18,594		)	—
Repayments	—			—			—			—			(1,857		)
Issues	—			—			—			—			—
Settlements	—			—			(121,828		)	(364		)	—
Closing balance	$	12,528		$	3,178		$	2,872,007		$	42,575		$	43,855
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(779	)	$	2,608		$	12,419		$	5,598		$	—

	Level 3 Fair Value Measurements Three Months Ended June 30, 2016
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	14,819		$	10,347		$	2,281,743		$	94,329		$	1,216
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(2,508		)	—			—			—
Total gains/losses for the period:
Included in earnings	(1,714		)	4,912			—			2			—
Included in OCI	—			—			7,486			5,842			—
Purchases/originations	—			—			46,457			—			—
Sales	—			—			(36,657		)	(27,794		)	—
Repayments	—			—			—			—			(291		)
Issues	—			—			—			—			—
Settlements	—			—			(61,054		)	(1,000		)	—
Closing balance	$	13,105		$	12,751		$	2,237,975		$	71,379		$	925
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(1,714	)	$	4,912		$	—		$	2		$	—

(1) Transfers out of Level 3 represent the settlement value of the derivative instruments (i.e. interest rate lock agreements) that were transferred to loans held for sale, which are classified as Level 2.

	Level 3 Fair Value Measurements Six Months Ended June 30, 2017
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	13,747		$	(2,123	)	$	2,798,044		$	76,003		$	47,880
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(2,457		)	—			—			—
Total gains/losses for the period:
Included in earnings	(1,219		)	7,758			(2,975		)	(3,528		)	1,430
Included in OCI	—			—			32,894			8,769			—
Purchases/originations	—			—			247,609			—			—
Sales	—			—			—			(37,728		)	—
Repayments	—			—			—			—			(5,455		)
Issues	—			—			—			—			—
Settlements	—			—			(203,565		)	(941		)	—
Closing balance	$	12,528		$	3,178		$	2,872,007		$	42,575		$	43,855
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(1,219	)	$	7,758		$	32,894		$	8,769		$	—

	Level 3 Fair Value Measurements Six Months Ended June 30, 2016
							Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments			Municipal securities			Asset- backed securities			Loans held for investment
Opening balance	$	17,585		$	6,056		$	2,095,551		$	100,337		$	1,748
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3 (1)	—			(3,423		)	—			—			—
Total gains/losses for the period:
Included in earnings	(4,480		)	10,118			—			2			—
Included in OCI	—			—			19,326			674			—
Purchases/originations	—			—			283,907			—			—
Sales	—			—			(36,657		)	(27,794		)	—
Repayments	—			—			—			—			(823		)
Issues	—			—			—			—			—
Settlements	—			—			(124,152		)	(1,840		)	—
Closing balance	$	13,105		$	12,751		$	2,237,975		$	71,379		$	925
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	$	(4,480	)	$	10,218		$	—		$	2		$	—

Classification of gains and losses due to changes in fair value, recorded in earnings for Level 3 assets and liabilities

The tables below summarize the classification of gains and losses due to changes in fair value, recorded in earnings for Level 3 assets and liabilities for the three-month and six-month periods ended June 30, 2017 and 2016:

	Level 3 Fair Value Measurements Three Months Ended June 30, 2017
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities			Asset- backed securities			Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(779	)	$	2,608	$	—		$	—		$	—
Securities gains (losses)	—			—		(1,180		)	(3,557		)	—
Interest and fee income	—			—		—			—			—
Noninterest income	—			—		—			—			1,493
Other expense	—			—		—			—			—
Total	$	(779	)	$	2,608	$	(1,180	)	$	(3,557	)	$	1,493

	Level 3 Fair Value Measurements Three Months Ended June 30, 2016
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities		Asset- backed securities		Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(1,714	)	$	4,912	$	—	$	—	$	—
Securities gains (losses)	—			—		—		—		—
Interest and fee income	—			—		—		—		—
Noninterest income	—			—		—		2		—
Other expense	—			—		—		—		—
Total	$	(1,714	)	$	4,912	$	—	$	2	$	—

	Level 3 Fair Value Measurements Six Months Ended June 30, 2017
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities			Asset- backed securities			Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(1,219	)	$	7,758	$	—		$	—		$	—
Securities gains (losses)	—			—		(2,975		)	(3,528		)	—
Interest and fee income	—			—		—			—			—
Noninterest income	—			—		—			—			1,430
Other expense	—			—		—			—			—
Total	$	(1,219	)	$	7,758	$	(2,975	)	$	(3,528	)	$	1,430

	Level 3 Fair Value Measurements Six Months Ended June 30, 2016
						Available-for-sale securities
(dollar amounts in thousands)	MSRs			Derivative instruments		Municipal securities		Asset- backed securities		Loans held for investment
Classification of gains and losses in earnings:
Mortgage banking income	$	(4,480	)	$	10,118	$	—	$	—	$	—
Securities gains (losses)	—			—		—		—		—
Interest and fee income	—			—		—		—		—
Noninterest income	—			—		—		2		—
Other expense	—			—		—		—		—
Total	$	(4,480	)	$	10,118	$	—	$	2	$	—

Assets and liabilities under the fair value option

The following table presents the fair value and aggregate principal balance of certain assets and liabilities under the fair value option:

	June 30, 2017
	Total Loans							Loans that are 90 or more days past due
(dollar amounts in thousands)	Fair value carrying amount		Aggregate unpaid principal		Difference			Fair value carrying amount		Aggregate unpaid principal		Difference
Assets
Loans held for sale	$	654,087	$	628,684	$	25,403		$	72	$	72	$	—
Loans held for investment	103,741		113,114		(9,373		)	13,039		15,447		(2,408		)

	December 31, 2016
	Total Loans							Loans that are 90 or more days past due
(dollar amounts in thousands)	Fair value carrying amount		Aggregate unpaid principal		Difference			Fair value carrying amount		Aggregate unpaid principal		Difference
Assets
Loans held for sale	$	438,224	$	433,760	$	4,464		$	—	$	—	$	—
Loans held for investment	82,319		91,998		(9,679		)	8,408		11,082		(2,674		)

The following tables present the net gains (losses) from fair value changes for the three-month and six-month periods ended June 30, 2017 and 2016:

	Net gains (losses) from fair value changes				Net gains (losses) from fair value changes
	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Assets
Loans held for sale	$	4,551	$	8,870	$	13,616	$	13,519
Loans held for investment	1,493		—		1,430		—

Assets measured at fair value on a nonrecurring basis

ssets measured at fair value on a nonrecurring basis were as follows:

			Fair Value Measurements Using
(dollar amounts in thousands)	Fair Value		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Total Gains/(Losses) Six Months Ended June 30, 2017
MSRs	$	175,454	$	—	$	—	$	175,454	$	(1,006	)
Impaired loans	36,118		—		—		36,118		(3,123		)
Other real estate owned	43,816		—		—		43,816		1,742

Quantitative information about significant unobservable level 3 fair value measurement inputs

	Quantitative Information about Level 3 Fair Value Measurements at June 30, 2017
(dollar amounts in thousands)	Fair Value		Valuation Technique	Significant Unobservable Input	Range (Weighted Average)
Measured at fair value on a recurring basis:
MSRs	$	12,528	Discounted cash flow	Constant prepayment rate	8.0% - 31.0% (11%)
				Spread over forward interest rate swap rates	3.0% - 10.0% (8.8%)
Derivative assets	9,227		Consensus Pricing	Net market price	-9.2% - 31.7% (1.8%)
Derivative liabilities	6,049			Estimated Pull through %	9.0% - 99.0% (78.0%)
Municipal securities	2,872,007		Discounted cash flow	Discount rate	0.0% - 10.3% (3.9%)
				Cumulative default	0.0% - 38.4% (2.7%)
				Loss given default	5.0% - 80.0% (23.2%)
Asset-backed securities	42,575		Discounted cash flow	Discount rate	6.9% - 12.3% (7.0%)
				Cumulative prepayment rate	0.0% - 72% (8.2%)
				Cumulative default	0.7% - 100% (10.2%)
				Loss given default	85% - 100% (96.6%)
				Cure given deferral	0.0% - 75% (37.7%)
Loans held for investment	43,855		Discounted cash flow	Discount rate	7.0% - 17.6% (6.6%)
Measured at fair value on a nonrecurring basis:
MSRs	175,454		Discounted cash flow	Constant prepayment rate	7.0% - 21.0% (8%)
				Spread over forward interest rate swap rates	3.0% - 20.0% 10.8%)
Impaired loans	36,118		Appraisal value	NA	NA
Other real estate owned	43,816		Appraisal value	NA	NA

	Quantitative Information about Level 3 Fair Value Measurements at December 31, 2016
(dollar amounts in thousands)	Fair Value		Valuation Technique	Significant Unobservable Input	Range (Weighted Average)
Measured at fair value on a recurring basis:
MSRs	$	13,747	Discounted cash flow	Constant prepayment rate	5.63% - 34.4% (10.9%)
				Spread over forward interest rate swap rates	3.0% - 9.2% (5.4%)
Derivative assets	5,747		Consensus Pricing	Net market price	-7.1% - 25.4% (1.1%)
Derivative liabilities	7,870			Estimated Pull through %	8.1% - 99.8% (76.9%)
Municipal securities	2,798,044		Discounted cash flow	Discount rate	0.0% - 10.0% (3.6%)
				Cumulative default	0.3% - 37.8% (4.0%)
				Loss given default	5.0% - 80.0% (24.1%)
Asset-backed securities	76,003		Discounted cash flow	Discount rate	5.0% - 12.0% (6.3%)
				Cumulative prepayment rate	0.0% - 73% (6.5%)
				Cumulative default	1.1% - 100% (11.2%)
				Loss given default	85% - 100% (96.3%)
				Cure given deferral	0.0% - 75.0% (36.2%)
Loans held for investment	47,880		Discounted cash flow	Constant prepayment rate	5.4% - 16.2% (5.6%)
Measured at fair value on a nonrecurring basis:
MSRs	171,309		Discounted cash flow	Constant prepayment rate	5.57% - 30.4% (7.8%)
				Spread over forward interest rate swap rates	4.2% - 20.0% (11.7%)
Impaired loans	53,818		Appraisal value	NA	NA
Other real estate owned	50,930		Appraisal value	NA	NA

Carrying amounts and estimated fair values of financial instruments

The following table provides the carrying amounts and estimated fair values of Huntington’s financial instruments that are carried either at fair value or cost at June 30, 2017 and December 31, 2016:

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial Assets
Cash and short-term assets	$	1,592,624	$	1,592,624	$	1,443,037	$	1,443,037
Trading account securities	94,767		94,767		133,295		133,295
Loans held for sale	748,077		752,800		512,951		515,640
Available-for-sale and other securities	15,388,306		15,388,306		15,562,837		15,562,837
Held-to-maturity securities	8,279,577		8,259,402		7,806,939		7,787,268
Net loans and direct financing leases	67,391,314		67,263,687		66,323,583		66,294,639
Derivatives	190,012		190,012		238,219		238,219
Financial Liabilities
Deposits	75,933,373		77,382,067		75,607,717		76,161,091
Short-term borrowings	4,552,877		4,552,877		3,692,654		3,692,654
Long-term debt	8,536,471		8,673,908		8,309,159		8,387,444
Derivatives	78,358		78,358		98,286		98,286

The following table presents the level in the fair value hierarchy for the estimated fair values of only Huntington’s financial instruments that are not already on the Unaudited Condensed Consolidated Balance Sheets at fair value at June 30, 2017 and December 31, 2016:

	Estimated Fair Value Measurements at Reporting Date Using						June 30, 2017
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Financial Assets
Held-to-maturity securities	$	—	$	8,259,402	$	—	$	8,259,402
Net loans and direct financing leases	—		—		67,263,687		67,263,687
Financial Liabilities
Deposits	—		73,621,776		3,760,291		77,382,067
Short-term borrowings	4,580		—		4,548,297		4,552,877
Long-term debt	—		8,278,588		395,320		8,673,908

	Estimated Fair Value Measurements at Reporting Date Using						December 31, 2016
(dollar amounts in thousands)	Level 1		Level 2		Level 3
Financial Assets
Held-to-maturity securities	$	—	$	7,787,268	$	—	$	7,787,268
Net loans and direct financing leases	—		—		66,294,639		66,294,639
Financial Liabilities
Deposits	—		72,319,328		3,841,763		76,161,091
Short-term borrowings	474		—		3,692,180		3,692,654
Long-term debt	—		7,980,176		407,268		8,387,444

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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Gross notional values of derivatives used in asset and liability management activities

The following table presents the gross notional values of derivatives used in Huntington’s asset and liability management activities at June 30, 2017, identified by the underlying interest rate-sensitive instruments:

(dollar amounts in thousands)	Fair Value Hedges		Cash Flow Hedges		Total
Instruments associated with:
Loans	$	—	$	1,925,000	$	1,925,000
Deposits	—		—		—
Subordinated notes	950,000		—		950,000
Long-term debt	6,725,000		—		6,725,000
Total notional value at June 30, 2017	$	7,675,000	$	1,925,000	$	9,600,000

Additional information about the interest rate swaps used in asset and liability management activities

The following table presents additional information about the interest rate swaps used in Huntington’s asset and liability management activities at June 30, 2017:

							Weighted-Average Rate
(dollar amounts in thousands)	Notional Value		Average Maturity (years)	Fair Value			Receive		Pay
Asset conversion swaps
Receive fixed—generic	$	1,925,000	0.3	$	(3,420	)	1.07	%	1.44	%
Liability conversion swaps
Receive fixed—generic	7,675,000		2.8	(46,490		)	1.54		1.19
Total swap portfolio at June 30, 2017	$	9,600,000	2.3	$	(49,910	)	1.44	%	1.24	%

Asset and liability derivatives included in accrued income and other assets

	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Asset		Liability		Asset		Liability
Derivatives designated as Hedging Instruments
Interest rate contracts	$	40,416	$	90,326	$	46,440	$	99,996
Derivatives not designated as Hedging Instruments
Interest rate contracts	192,000		114,889		213,587		143,976
Foreign exchange contracts	27,655		27,883		23,265		19,576
Commodities contracts	53,295		49,520		108,026		104,328
Equity contracts	10,728		5,694		9,775		—
Total Contracts	$	324,094	$	288,312	$	401,093	$	367,876

Increase or (decrease) to interest expense for derivatives designated as fair value hedges

The following table presents the change in fair value for derivatives designated as fair value hedges as well as the offsetting change in fair value on the hedged item for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017			2016
Interest rate contracts
Change in fair value of interest rate swaps hedging deposits (1)	$	—		$	—		$	(76	)	$	(82	)
Change in fair value of hedged deposits (1)	—			—			—			72
Change in fair value of interest rate swaps hedging subordinated notes (2)	2,277			4			(2,431		)	6,809
Change in fair value of hedged subordinated notes (2)	(2,235		)	(4		)	3,168			(6,809		)
Change in fair value of interest rate swaps hedging other long-term debt (2)	15,832			22,017			5,551			83,049
Change in fair value of hedged other long-term debt (2)	(16,913		)	(21,047		)	(8,378		)	(80,834		)

(1) Effective portion of the hedging relationship is recognized in Interest expense—deposits in the Unaudited Condensed Consolidated Statements of Income. Any resulting ineffective portion of the hedging relationship is recognized in noninterest income in the Unaudited Condensed Consolidated Statements of Income.

(2) Effective portion of the hedging relationship is recognized in Interest expense—subordinated notes and other long-term debt in the Unaudited Condensed Consolidated Statements of Income. Any resulting ineffective portion of the hedging relationship is recognized in noninterest income in the Unaudited Condensed Consolidated Statements of Income.

Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges

The following table presents the gains and (losses) recognized in OCI and the location in the Unaudited Condensed Consolidated Statements of Income of gains and (losses) reclassified from OCI into earnings for derivatives designated as effective cash flow hedges for the three-month and six-month periods ended June 30, 2017 and 2016:

Derivatives in cash flow hedging relationships	Amount of gain or (loss) recognized in OCI on derivatives (effective portion) (after-tax)				Location of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	Amount of (gain) or loss reclassified from accumulated OCI into earnings (effective portion)
	Three Months Ended June 30,					Three Months Ended June 30,
(dollar amounts in thousands)	2017		2016			2017		2016
Interest rate contracts
Loans	$	793	$	1,293	Interest and fee income - loans and leases	$	427	$	(248	)
Investment Securities	—		—		Noninterest income - other income	—		—
Total	$	793	$	1,293		$	427	$	(248	)

Derivatives in cash flow hedging relationships	Amount of gain or (loss) recognized in OCI on derivatives (effective portion) (after-tax)					Location of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	Amount of (gain) or loss reclassified from accumulated OCI into earnings (effective portion)
	Six Months Ended June 30,						Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016			2017		2016
Interest rate contracts
Loans	$	(397	)	$	10,542	Interest and fee income - loans and leases	$	987	$	(893	)
Investment Securities	—			—		Noninterest income - other income	—		1
	$	(397	)	$	10,542		$	987	$	(892	)

Gains and (losses) recognized in noninterest income on the ineffective portion on interest rate contracts for derivatives designated as fair value and cash flow hedges

The following table presents the gains and (losses) recognized in noninterest income for the ineffective portion of interest rate contracts for derivatives designated as cash flow hedges for the three and six-month periods ended June 30, 2017 and 2016:

Derivatives in cash flow hedging relationships	Three Months Ended June 30,					Six Months Ended June 30,
(dollar amounts in thousands)	2017			2016		2017			2016
Interest rate contracts
Loans	$	(31	)	$	421	$	(134	)	$	377

Derivative assets and liabilities used in mortgage banking activities [Table Text Block]

The following table summarizes the derivative assets and liabilities used in mortgage banking activities:

Derivatives used in mortgage banking activities	June 30, 2017				December 31, 2016
(dollar amounts in thousands)	Asset		Liability		Asset		Liability
Interest rate lock agreements	$	9,227	$	355	$	5,747	$	1,598
Forward trades and options	1,642		2,178		13,319		1,173
Total derivatives used in mortgage banking activities	$	10,869	$	2,533	$	19,066	$	2,771

Offsetting of financial liabilities and derivative liabilities

Offsetting of Financial Liabilities and Derivative Liabilities
				Gross amounts offset in the condensed consolidated balance sheets			Net amounts of liabilities presented in the condensed consolidated balance sheets		Gross amounts not offset in the condensed consolidated balance sheets
(dollar amounts in thousands)		Gross amounts of recognized liabilities							Financial instruments			Cash collateral delivered			Net amount
June 30, 2017	Derivatives	$	290,845	$	(212,487	)	$	78,358	$	—		$	(24,348	)	$	54,010
December 31, 2016	Derivatives	370,647		(272,361		)	98,286		(7,550		)	(23,943		)	66,793

Offsetting of financial assets and derivatives assets

The following tables present the gross amounts of these assets and liabilities with any offsets to arrive at the net amounts recognized in the Unaudited Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016:

Offsetting of Financial Liabilities and Derivative Assets
				Gross amounts offset in the condensed consolidated balance sheets			Net amounts of assets presented in the condensed consolidated balance sheets		Gross amounts not offset in the condensed consolidated balance sheets
(dollar amounts in thousands)		Gross amounts of recognized assets							Financial instruments			Cash collateral received			Net amount
June 30, 2017	Derivatives	$	334,963	$	(144,951	)	$	190,012	$	(5,009	)	$	(18,448	)	$	166,555
December 31, 2016	Derivatives	420,159		(181,940		)	238,219		(34,328		)	(5,428		)	198,463

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VIEs (Tables)

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Carrying amount and classification of the trusts assets and liabilities

The following tables provide a summary of the assets and liabilities included in Huntington’s Unaudited Condensed Consolidated Financial Statements, as well as the maximum exposure to losses, associated with its interests related to unconsolidated VIEs for which Huntington holds an interest, but is not the primary beneficiary, to the VIE at June 30, 2017, and December 31, 2016:

	June 30, 2017
(dollar amounts in thousands)	Total Assets		Total Liabilities		Maximum Exposure to Loss
2016-1 Automobile Trust	$	10,464	$	—	$	10,464
2015-1 Automobile Trust	2,046		—		2,046
Trust Preferred Securities	13,919		252,568		—
Low Income Housing Tax Credit Partnerships	615,691		327,793		615,691
Other Investments	110,318		55,026		110,318
Total	$	752,438	$	635,387	$	738,519

	December 31, 2016
(dollar amounts in thousands)	Total Assets		Total Liabilities		Maximum Exposure to Loss
2016-1 Automobile Trust	$	14,770	$	—	$	14,770
2015-1 Automobile Trust	2,227		—		2,227
Trust Preferred Securities	13,919		252,552		—
Low Income Housing Tax Credit Partnerships	576,880		292,721		576,880
Other Investments	79,195		42,316		79,195
Total	$	686,991	$	587,589	$	673,072

The following tables present the carrying amount and classification of the consolidated trusts’ assets and liabilities that were included in the Unaudited Condensed Consolidated Balance Sheets at June 30, 2017 and December 31, 2016:

	June 30, 2017
	Huntington Technology Funding Trust		Other Consolidated VIEs		Total
(dollar amounts in thousands)	Series 2014A
Assets:
Cash	$	1,566	$	—	$	1,566
Net loans and leases	43,039		—		43,039
Accrued income and other assets	—		271		271
Total assets	$	44,605	$	271	$	44,876
Liabilities:
Other long-term debt	$	36,040	$	—	$	36,040
Accrued interest and other liabilities	—		271		271
Total liabilities	36,040		271		36,311
Equity:
Beneficial Interest owned by third party	8,565		—		8,565
Total liabilities and equity	$	44,605	$	271	$	44,876

	December 31, 2016
	Huntington Technology Funding Trust		Other Consolidated VIEs		Total
(dollar amounts in thousands)	Series 2014A
Assets:
Cash	$	1,564	$	—	$	1,564
Net loans and leases	69,825		—		69,825
Accrued income and other assets	—		281		281
Total assets	$	71,389	$	281	$	71,670
Liabilities:
Other long-term debt	$	57,494	$	—	$	57,494
Accrued interest and other liabilities	—		281		281
Total liabilities	57,494		281		57,775
Equity:
Beneficial Interest owned by third party	13,895		—		13,895
Total liabilities and equity	$	71,389	$	281	$	71,670

Summary of Outstanding Trust Preferred Securities

A list of trust preferred securities outstanding at June 30, 2017 follows:

(dollar amounts in thousands)	Rate			Principal amount of subordinated note/ debenture issued to trust (1)		Investment in unconsolidated subsidiary
Huntington Capital I	1.87	%	(2)	$	69,730	$	6,186
Huntington Capital II	1.87		(3)	32,093		3,093
Sky Financial Capital Trust III	2.70		(4)	72,165		2,165
Sky Financial Capital Trust IV	2.55		(4)	74,320		2,320
Camco Financial Trust	3.69		(5)	4,260		155
Total				$	252,568	$	13,919

(1) Represents the principal amount of debentures issued to each trust, including unamortized original issue discount.

(2) Variable effective rate at June 30, 2017, based on three-month LIBOR +0.70%.

(3) Variable effective rate at June 30, 2017, based on three-month LIBOR +0.625%.

(4) Variable effective rate at June 30, 2017, based on three-month LIBOR +1.40%.

(5) Variable effective rate at June 30, 2017, based on three-month LIBOR +1.33%.

Affordable housing tax credit investments

The following table presents the balances of Huntington’s affordable housing tax credit investments and related unfunded commitments at June 30, 2017 and December 31, 2016:

(dollar amounts in thousands)	June 30, 2017			December 31, 2016
Affordable housing tax credit investments	$	942,769		$	877,237
Less: amortization	(327,078		)	(300,357		)
Net affordable housing tax credit investments	$	615,691		$	576,880
Unfunded commitments	$	327,793		$	292,721

The following table presents other information relating to Huntington’s affordable housing tax credit investments for the three-month and six-month periods ended June 30, 2017 and 2016:

	Three Months Ended June 30,				Six Months Ended June 30,
(dollar amounts in thousands)	2017		2016		2017		2016
Tax credits and other tax benefits recognized	$	22,671	$	18,150	$	45,955	$	36,434
Proportional amortization method
Tax credit amortization expense included in provision for income taxes	17,220		12,499		34,182		24,905
Equity method
Tax credit investment (gains) losses included in non-interest income	—		132		109		264

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COMMITMENTS AND CONTINGENT LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Contract amounts of various commitments to extend credit

In the ordinary course of business, Huntington makes various commitments to extend credit that are not reflected in the Unaudited Condensed Consolidated Financial Statements. The contract amounts of these financial agreements at June 30, 2017 and December 31, 2016, were as follows:

(dollar amounts in thousands)	June 30, 2017		December 31, 2016
Contract amount represents credit risk:
Commitments to extend credit
Commercial	$	15,684,661	$	15,190,056
Consumer	12,727,316		12,235,943
Commercial real estate	1,474,831		1,697,671
Standby letters-of-credit	559,903		637,182
Commercial letters-of-credit	11,952		4,610

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SEGMENT REPORTING (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Listed below is certain operating basis financial information reconciled to Huntington’s June 30, 2017, December 31, 2016, and June 30, 2016, reported results by business segment:

	Three Months Ended June 30,
Income Statements	Consumer & Business Banking		Commercial Banking			CREVF		RBHPCG			Treasury / Other			Huntington Consolidated
(dollar amounts in thousands)
2017
Net interest income	$	420,210	$	168,814		$	140,367	$	48,749		$	(33,628	)	$	744,512
Provision for (reduction in allowance) credit losses	17,000		(10,339		)	20,793		(2,477		)	1			24,978
Noninterest income	184,199		59,926			12,559		46,385			22,149			325,218
Noninterest expense	412,400		101,184			55,946		60,885			63,949			694,364
Income taxes	61,253		48,263			26,665		12,854			(70,388		)	78,647
Net income	$	113,756	$	89,632		$	49,522	$	23,872		$	(5,041	)	$	271,741
2016
Net interest income	$	284,896	$	106,971		$	95,617	$	35,499		$	(17,102	)	$	505,881
Provision for (reduction in allowance) credit losses	20,848		(5,630		)	9,740		(448		)	(1		)	24,509
Noninterest income	152,242		51,158			10,640		40,097			16,975			271,112
Noninterest expense	310,924		80,842			41,185		53,757			36,953			523,661
Income taxes	36,879		29,021			19,366		7,801			(38,784		)	54,283
Net income	$	68,487	$	53,896		$	35,966	$	14,486		$	1,705		$	174,540

	Six Months Ended June 30,
Income Statements	Consumer & Business Banking		Commercial Banking		CREVF			RBHPCG			Treasury / Other			Huntington Consolidated
(dollar amounts in thousands)
2017
Net interest income	$	828,936	$	343,285	$	279,700		$	95,492		$	(72,926	)	$	1,474,487
Provision for credit losses	50,181		11,798		30,342			295			—			92,616
Noninterest income	354,970		117,573		23,768			94,395			46,975			637,681
Noninterest expense	824,048		201,382		108,635			123,934			143,787			1,401,786
Income taxes	108,387		86,687		57,572			22,980			(137,695		)	137,931
Net income	$	201,290	$	160,991	$	106,919		$	42,678		$	(32,043	)	$	479,835
2016
Net interest income	$	562,423	$	212,240	$	191,214		$	70,503		$	(27,433	)	$	1,008,947
Provision for (reduction in allowance) credit losses	30,750		29,423		(6,909		)	(1,173		)	—			52,091
Noninterest income	284,002		95,484		17,950			79,403			36,140			512,979
Noninterest expense	616,981		159,050		80,922			109,172			48,616			1,014,741
Income taxes	69,543		41,738		47,303			14,667			(64,011		)	109,240
Net income	$	129,151	$	77,513	$	87,848		$	27,240		$	24,102		$	345,854

	Assets at				Deposits at
(dollar amounts in thousands)	June 30, 2017		December 31, 2016		June 30, 2017		December 31, 2016
Consumer & Business Banking	$	25,820,232	$	25,332,635	$	45,971,574	$	45,355,745
Commercial Banking	24,021,962		24,121,689		17,867,356		18,053,208
CREVF	24,431,788		23,576,832		1,943,670		1,893,072
RBHPCG	5,570,436		5,327,622		5,882,745		6,214,250
Treasury / Other	21,562,361		21,355,319		4,268,028		4,091,442
Total	$	101,406,779	$	99,714,097	$	75,933,373	$	75,607,717

Segment Disclosure of Assets and Deposits

	Assets at				Deposits at
(dollar amounts in thousands)	June 30, 2017		December 31, 2016		June 30, 2017		December 31, 2016
Consumer & Business Banking	$	25,820,232	$	25,332,635	$	45,971,574	$	45,355,745
Commercial Banking	24,021,962		24,121,689		17,867,356		18,053,208
CREVF	24,431,788		23,576,832		1,943,670		1,893,072
RBHPCG	5,570,436		5,327,622		5,882,745		6,214,250
Treasury / Other	21,562,361		21,355,319		4,268,028		4,091,442
Total	$	101,406,779	$	99,714,097	$	75,933,373	$	75,607,717

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details)	6 Months Ended
	Jun. 30, 2017 USD ($) reserve	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable net premium	$ 245,000,000		$ 120,000,000
Loans held for investment	103,741,000		82,319,000
Allowance for loan and lease losses	$ (667,996,000)	$ (672,580,000)	(638,413,000)	$ (623,064,000)	$ (613,719,000)	$ (597,843,000)
Number of days past due	30 days
Allowance number of reserves | reserve	2
Collateral for secured borrowings	$ 30,400,000,000
FirstMerit Corporation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	(970,000)		0
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	$ (474,576,000)	(480,308,000)	(451,091,000)	(424,507,000)	(422,441,000)	(398,753,000)
Threshold period past due for nonperforming status	90 days
Threshold outstanding balance for quarterly impairment evaluation	$ 1,000,000.0
Threshold period past due for write-off	90 days
Commercial | Commercial and Industrial | FirstMerit Corporation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	$ (970,000)		0
Commercial | Commercial Real Estate | FirstMerit Corporation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	0		0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	$ (193,420,000)	$ (192,272,000)	$ (187,322,000)	$ (198,557,000)	$ (191,278,000)	$ (199,090,000)
Threshold period past due for nonperforming status	120 days
Threshold period past due for write-off	120 days

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Loan and Lease Portfolio Composition (Details) - USD ($) $ in Thousands		Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Loan and Lease Portfolio
Commercial and industrial		$ 27,969,151		$ 28,058,712
Commercial real estate		7,145,151		7,300,901
Automobile		11,555,137		10,968,782
Home equity		9,965,534		10,105,774
Residential mortgage		8,237,297		7,724,961
Recreation Finance		2,177,732		1,846,447
Other consumer		1,009,308		956,419
Loans and leases	[1]	68,059,310		66,961,996
Allowance for loan and lease losses		(667,996)	$ (672,580)	(638,413)	$ (623,064)	$ (613,719)	$ (597,843)
Net loans and leases		$ 67,391,314		$ 66,323,583

[1] Amounts represent loans for which Huntington has elected the fair value option.

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Certain Loans Acquired Balances at Acquisition (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
FirstMerit Corporation
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Accretable yield	$ (36,509)	$ (37,372)	$ (36,669)

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Certain Loans Acquired Accretable Yield Roll (Details) - FirstMerit Corporation - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance, beginning of period	$ 37,372	$ 36,669
Accretion	(4,788)	(9,490)
Reclassification (to) from nonaccretable difference	3,925	9,330
Balance, end of period	$ 36,509	$ 36,509

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Certain Loans Acquired Ending and Unpaid Balances (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Ending Balance	$ 75,722		$ 102,380
Loans and Leases Receivable, Allowance	667,996	$ 672,580	638,413	$ 623,064	$ 613,719	$ 597,843
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	474,576	$ 480,308	451,091	$ 424,507	$ 422,441	$ 398,753
Commercial | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Ending Balance	54,942		68,338
Commercial | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Ending Balance	20,780		34,042
FirstMerit Corporation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Ending Balance	75,722		102,380
Purchased Credit Impaired, Unpaid Balance	116,838		156,351
Loans and Leases Receivable, Allowance	970		0
FirstMerit Corporation | Commercial | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Ending Balance	54,942		68,338
Purchased Credit Impaired, Unpaid Balance	81,934		100,031
Loans and Leases Receivable, Allowance	970		0
FirstMerit Corporation | Commercial | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchased Credit Impaired, Ending Balance	20,780		34,042
Purchased Credit Impaired, Unpaid Balance	34,904		56,320
Loans and Leases Receivable, Allowance	$ 0		$ 0

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Nonaccrual Loans by Loan Class (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total nonaccrual loans	$ 364,456	$ 423,003
Commercial | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total nonaccrual loans	195,279	234,184
Commercial | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total nonaccrual loans	16,763	20,508
Consumer | Automobile
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total nonaccrual loans	3,825	5,766
Consumer | Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total nonaccrual loans	67,940	71,798
Consumer | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total nonaccrual loans	80,306	90,502
Consumer | RV and Marine FInance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total nonaccrual loans	341	245
Consumer | Other Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total nonaccrual loans	$ 2	$ 0

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - NALs Past Due (Details) - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		$ 695,588	$ 718,203
Current		67,184,259	66,059,094
Purchased Credit Impaired		75,722	102,380
Consumer loans		103,741	82,319
Loans and leases	[1]	68,059,310	66,961,996
90 or more days past due and accruing		136,360	129,362
30-59 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		301,055	320,341
60-89 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		96,081	108,443
90 or more days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		298,452	289,419
Commercial | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		143,013	136,362
Current		27,771,196	27,854,012
Purchased Credit Impaired		54,942	68,338
Consumer loans		0	0
Loans and leases		27,969,151	28,058,712
90 or more days past due and accruing		21,501	18,148
Commercial | Commercial and Industrial | 30-59 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		44,796	42,052
Commercial | Commercial and Industrial | 60-89 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		13,608	20,136
Commercial | Commercial and Industrial | 90 or more days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		84,609	74,174
Commercial | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		38,614	54,048
Current		7,085,757	7,212,811
Purchased Credit Impaired		20,780	34,042
Consumer loans		0	0
Loans and leases		7,145,151	7,300,901
90 or more days past due and accruing		17,040	17,215
Commercial | Commercial Real Estate | 30-59 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		7,382	21,187
Commercial | Commercial Real Estate | 60-89 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		3,918	3,202
Commercial | Commercial Real Estate | 90 or more days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		27,314	29,659
Consumer | Automobile
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		92,557	103,913
Current		11,461,169	10,862,715
Purchased Credit Impaired		0	0
Consumer loans		1,411	2,154
Loans and leases		11,555,137	10,968,782
90 or more days past due and accruing		8,594	10,182
Consumer | Automobile | 30-59 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		68,600	76,283
Consumer | Automobile | 60-89 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		15,241	17,188
Consumer | Automobile | 90 or more days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		8,716	10,442
Consumer | Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		122,135	115,804
Current		9,840,922	9,986,697
Purchased Credit Impaired		0	0
Consumer loans		2,477	3,273
Loans and leases		9,965,534	10,105,774
90 or more days past due and accruing		18,459	11,508
Consumer | Home Equity | 30-59 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		44,513	38,899
Consumer | Home Equity | 60-89 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		16,463	23,903
Consumer | Home Equity | 90 or more days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		61,159	53,002
Consumer | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		268,948	276,611
Current		7,869,927	7,373,414
Purchased Credit Impaired		0	0
Consumer loans		98,422	74,936
Loans and leases		8,237,297	7,724,961
90 or more days past due and accruing		65,159	66,952
Consumer | Residential Mortgage | 30-59 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		117,779	122,469
Consumer | Residential Mortgage | 60-89 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		40,327	37,460
Consumer | Residential Mortgage | 90 or more days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		110,842	116,682
Consumer | RV and Marine FInance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		13,181	13,805
Current		2,163,346	1,831,123
Purchased Credit Impaired		0	0
Consumer loans		1,205	1,519
Loans and leases		2,177,732	1,846,447
90 or more days past due and accruing		2,464	1,462
Consumer | RV and Marine FInance | 30-59 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		8,072	10,009
Consumer | RV and Marine FInance | 60-89 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		2,443	2,230
Consumer | RV and Marine FInance | 90 or more days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		2,666	1,566
Consumer | Other Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		17,140	17,660
Current		991,942	938,322
Purchased Credit Impaired		0	0
Consumer loans		226	437
Loans and leases		1,009,308	956,419
90 or more days past due and accruing		3,143	3,895
Consumer | Other Consumer | 30-59 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		9,913	9,442
Consumer | Other Consumer | 60-89 Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		4,081	4,324
Consumer | Other Consumer | 90 or more days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		$ 3,146	$ 3,894

[1] Amounts represent loans for which Huntington has elected the fair value option.

XML

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Allowance For Credit Losses Roll Forward [Abstract]
ALLL balance, beginning of period	$ 672,580	$ 613,719	$ 638,413	$ 597,843
Loan charge-offs	(56,448)	(43,545)	(127,163)	(103,237)
Recoveries of loans previously charged-off	20,408	26,790	51,685	77,930
Provision for loan and lease losses	31,457	26,086	105,136	50,424
Allowance for loans sold or transferred to loans held for sale	(1)	14	(75)	104
ALLL balance, end of period	667,996	623,064	667,996	623,064
AULC Balance, beginning of period	91,838	75,325	97,879	72,081
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(6,479)	(1,577)	(12,520)	1,667
AULC Balance, end of period	85,359	73,748	85,359	73,748
ACL balance, end of period	753,355	696,812	753,355	696,812
Commercial
Allowance For Credit Losses Roll Forward [Abstract]
ALLL balance, beginning of period	480,308	422,441	451,091	398,753
Loan charge-offs	(15,103)	(16,933)	(38,773)	(45,882)
Recoveries of loans previously charged-off	5,787	13,904	23,604	53,815
Provision for loan and lease losses	3,585	5,095	38,729	17,821
Allowance for loans sold or transferred to loans held for sale	(1)	0	(75)	0
ALLL balance, end of period	474,576	424,507	474,576	424,507
AULC Balance, beginning of period	88,899	65,872	86,543	63,448
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(6,072)	(2,155)	(3,716)	269
AULC Balance, end of period	82,827	63,717	82,827	63,717
ACL balance, end of period	557,403	488,224	557,403	488,224
Consumer
Allowance For Credit Losses Roll Forward [Abstract]
ALLL balance, beginning of period	192,272	191,278	187,322	199,090
Loan charge-offs	(41,345)	(26,612)	(88,390)	(57,355)
Recoveries of loans previously charged-off	14,621	12,886	28,081	24,115
Provision for loan and lease losses	27,872	20,991	66,407	32,603
Allowance for loans sold or transferred to loans held for sale	0	14	0	104
ALLL balance, end of period	193,420	198,557	193,420	198,557
AULC Balance, beginning of period	2,939	9,453	11,336	8,633
Provision for (reduction in allowance) unfunded loan commitments and letters of credit	(407)	578	(8,804)	1,398
AULC Balance, end of period	2,532	10,031	2,532	10,031
ACL balance, end of period	$ 195,952	$ 208,588	$ 195,952	$ 208,588

XML

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	$ 27,969,151	$ 28,058,712
Commercial real estate	7,145,151	7,300,901
Automobile	11,555,137	10,968,782
Home equity	9,965,534	10,105,774
Residential mortgage	8,237,297	7,724,961
Other consumer	1,009,308	956,419
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	27,969,151	28,058,712
Commercial real estate	7,145,151	7,300,901
Commercial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	26,006,917	26,211,885
Commercial real estate	6,923,159	7,042,304
Commercial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	1,138,508	1,028,819
Commercial real estate	132,017	159,098
Commercial | OLEM
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	798,643	810,287
Commercial real estate	88,932	96,975
Commercial | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	25,083	7,721
Commercial real estate	1,043	2,524
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Automobile	11,553,726	10,966,628
Home equity	9,963,057	10,102,501
Residential mortgage	8,138,875	7,650,025
RV and marine finance	2,176,527	1,844,928
Other consumer	1,009,082	955,982
Consumer | Greater than 750
Accounts, Notes, Loans and Financing Receivable [Line Items]
Automobile	5,728,416	5,369,085
Home equity	6,296,801	6,280,328
Residential mortgage	4,945,403	4,662,777
RV and marine finance	1,287,480	1,064,143
Other consumer	386,659	346,867
Consumer | 650-749
Accounts, Notes, Loans and Financing Receivable [Line Items]
Automobile	4,202,063	4,043,611
Home equity	3,013,152	2,891,330
Residential mortgage	2,449,297	2,285,121
RV and marine finance	774,873	644,039
Other consumer	481,324	455,959
Consumer | Less Than 650
Accounts, Notes, Loans and Financing Receivable [Line Items]
Automobile	1,350,925	1,298,460
Home equity	619,661	637,560
Residential mortgage	610,720	615,067
RV and marine finance	85,844	72,995
Other consumer	135,161	133,243
Consumer | Other FICO score
Accounts, Notes, Loans and Financing Receivable [Line Items]
Automobile	272,322	255,472
Home equity	33,443	293,283
Residential mortgage	133,455	87,060
RV and marine finance	28,330	63,751
Other consumer	$ 5,938	$ 19,913

XML

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - ALLL Attributable to Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Portion of ALLL balance:
Attributable to loans collectively evaluated for impairment	$ 643,743		$ 616,867
Attributable to loans individually evaluated for impairment	23,283		21,546
Total ALLL balance	667,996	$ 672,580	638,413	$ 623,064	$ 613,719	$ 597,843
Portion of loan and lease ending balance:
Collectively evaluated for impairment	66,987,156		65,903,783
Individually evaluated for impairment	892,691		873,514
Financing Receivable Evaluated For Impairment	67,955,569		66,879,677
Commercial
Portion of ALLL balance:
Attributable to loans collectively evaluated for impairment	459,367		440,566
Attributable to loans individually evaluated for impairment	14,239		10,525
Total ALLL balance	474,576	480,308	451,091	424,507	422,441	398,753
Portion of loan and lease ending balance:
Collectively evaluated for impairment	34,597,081		34,841,609
Individually evaluated for impairment	441,499		415,624
Financing Receivable Evaluated For Impairment	35,114,302		35,359,613
Consumer
Portion of ALLL balance:
Attributable to loans collectively evaluated for impairment	184,376		176,301
Attributable to loans individually evaluated for impairment	9,044		11,021
Total ALLL balance	193,420	$ 192,272	187,322	$ 198,557	$ 191,278	$ 199,090
Portion of loan and lease ending balance:
Collectively evaluated for impairment	32,390,075		31,062,174
Individually evaluated for impairment	451,192		457,890
Financing Receivable Evaluated For Impairment	32,841,267		31,520,064
Purchased credit-impaired
Portion of ALLL balance:
Attributable to loans collectively evaluated for impairment	970
Portion of loan and lease ending balance:
Collectively evaluated for impairment	75,722		102,380
Purchased credit-impaired | Commercial
Portion of ALLL balance:
Attributable to loans collectively evaluated for impairment	970
Portion of loan and lease ending balance:
Collectively evaluated for impairment	75,722		102,380
Purchased credit-impaired | Consumer
Portion of ALLL balance:
Attributable to loans collectively evaluated for impairment	0
Portion of loan and lease ending balance:
Collectively evaluated for impairment	$ 0		$ 0

XML

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Automobile
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance of impaired loans with no allowance recorded	$ 0		$ 0		$ 0
Average balance of impaired loans with no allowance recorded	0	$ 0	0	$ 0
Interest income recognized on impaired loans with no allowance recorded	0	0	0	0
Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance of impaired loans with no allowance recorded	0		0		0
Average balance of impaired loans with no allowance recorded	0	0	0	0
Interest income recognized on impaired loans with no allowance recorded	0	0	0	0
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance of impaired loans with no allowance recorded	0		0		0
Average balance of impaired loans with no allowance recorded	0	1,298	0	1,350
Interest income recognized on impaired loans with no allowance recorded	0	109	0	111
RV and Marine FInance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance of impaired loans with no allowance recorded	0		0
Average balance of impaired loans with no allowance recorded	0		0
Interest income recognized on impaired loans with no allowance recorded	0		0
Commercial | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance of impaired loans with no allowance recorded	261,285		261,285		299,606
Unpaid principal balance of impaired loans with no allowance recorded	270,571		270,571		358,712
Average balance of impaired loans with no allowance recorded	262,631	289,138	268,041	284,128
Interest income recognized on impaired loans with no allowance recorded	4,852	2,392	9,352	4,623
Ending balance of impaired loans with allowance recorded	283,409		283,409		406,243
Unpaid principal balance of impaired loans with allowance recorded	342,188		342,188		448,121
Related Allowance	24,423		24,423		22,259
Impaired Financing Receivable, Average Recorded Investment	520,697	580,899	578,652	553,646
Impaired Financing Receivable, Interest Income, Accrual Method	6,854	4,131	13,260	8,452
Average balance of impaired loans with allowance recorded	258,066	291,761	310,611	269,518
Interest income recognized on impaired loans with allowance recorded	2,002	1,739	3,908	3,829
Loans considered impaired due to status as a TDR	115,000		115,000		293,000
Impaired Financing Receivable, Recorded Investment	544,694		544,694		705,849
Impaired Financing Receivable, Unpaid Principal Balance	612,759		612,759		806,833
Commercial | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance of impaired loans with no allowance recorded	76,463		76,463		88,817
Unpaid principal balance of impaired loans with no allowance recorded	106,248		106,248		126,152
Average balance of impaired loans with no allowance recorded	82,296	72,569	84,865	72,640
Interest income recognized on impaired loans with no allowance recorded	1,937	1,855	3,937	3,472
Ending balance of impaired loans with allowance recorded	34,270		34,270		97,238
Unpaid principal balance of impaired loans with allowance recorded	41,695		41,695		107,512
Related Allowance	2,340		2,340		3,434
Impaired Financing Receivable, Average Recorded Investment	121,049	130,926	143,428	142,141
Impaired Financing Receivable, Interest Income, Accrual Method	2,390	2,470	4,857	4,845
Average balance of impaired loans with allowance recorded	38,753	58,357	58,563	69,501
Interest income recognized on impaired loans with allowance recorded	453	615	920	1,373
Loans considered impaired due to status as a TDR	23,000		23,000		81,000
Impaired Financing Receivable, Recorded Investment	110,733		110,733		186,055
Impaired Financing Receivable, Unpaid Principal Balance	147,943		147,943		233,664
Consumer | Automobile
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance of impaired loans with no allowance recorded	0		0		0
Ending balance of impaired loans with allowance recorded	32,431		32,431		30,961
Unpaid principal balance of impaired loans with allowance recorded	32,642		32,642		31,298
Related Allowance	1,889		1,889		1,850
Impaired Financing Receivable, Average Recorded Investment	32,581	32,032	32,041	31,789
Impaired Financing Receivable, Interest Income, Accrual Method	546	524	1,080	1,102
Average balance of impaired loans with allowance recorded	32,581	32,032	32,041	31,789
Interest income recognized on impaired loans with allowance recorded	546	524	1,080	1,102
Impaired Financing Receivable, Recorded Investment	32,431		32,431		30,961
Impaired Financing Receivable, Unpaid Principal Balance	32,642		32,642		31,298
Consumer | Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance of impaired loans with no allowance recorded	0		0		0
Ending balance of impaired loans with allowance recorded	325,805		325,805		319,404
Unpaid principal balance of impaired loans with allowance recorded	357,738		357,738		352,722
Related Allowance	17,844		17,844		15,032
Impaired Financing Receivable, Average Recorded Investment	326,280	248,056	323,988	248,317
Impaired Financing Receivable, Interest Income, Accrual Method	3,977	2,962	7,927	5,930
Average balance of impaired loans with allowance recorded	326,280	248,056	323,988	248,317
Interest income recognized on impaired loans with allowance recorded	3,977	2,962	7,927	5,930
Impaired Financing Receivable, Recorded Investment	325,805		325,805		319,404
Impaired Financing Receivable, Unpaid Principal Balance	357,738		357,738		352,722
Consumer | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance of impaired loans with no allowance recorded	0		0		0
Ending balance of impaired loans with allowance recorded	329,050		329,050		327,753
Unpaid principal balance of impaired loans with allowance recorded	363,277		363,277		363,099
Related Allowance	11,578		11,578		12,849
Impaired Financing Receivable, Average Recorded Investment	339,289	353,787	335,444	358,674
Impaired Financing Receivable, Interest Income, Accrual Method	2,903	3,136	6,013	6,175
Average balance of impaired loans with allowance recorded	339,289	352,489	335,444	357,324
Interest income recognized on impaired loans with allowance recorded	2,903	3,027	6,013	6,064
Impaired Financing Receivable, Recorded Investment	329,050		329,050		327,753
Impaired Financing Receivable, Unpaid Principal Balance	363,277		363,277		363,099
Consumer | RV and Marine FInance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance of impaired loans with no allowance recorded	0		0		0
Unpaid principal balance of impaired loans with no allowance recorded					0
Average balance of impaired loans with no allowance recorded		0		0
Interest income recognized on impaired loans with no allowance recorded		0		0
Ending balance of impaired loans with allowance recorded	1,331		1,331		0
Unpaid principal balance of impaired loans with allowance recorded	1,355		1,355		0
Related Allowance	134		134		0
Impaired Financing Receivable, Average Recorded Investment	1,009	0	672	0
Impaired Financing Receivable, Interest Income, Accrual Method	23	0	34	0
Average balance of impaired loans with allowance recorded	1,009	0	672	0
Interest income recognized on impaired loans with allowance recorded	23	0	34	0
Impaired Financing Receivable, Recorded Investment	1,331		1,331		0
Impaired Financing Receivable, Unpaid Principal Balance	1,355		1,355		0
Consumer | Other Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance of impaired loans with no allowance recorded	0		0		0
Unpaid principal balance of impaired loans with no allowance recorded	0		0		0
Average balance of impaired loans with no allowance recorded	0	19	0	30
Interest income recognized on impaired loans with no allowance recorded	0	2	0	104
Ending balance of impaired loans with allowance recorded	4,126		4,126		3,897
Unpaid principal balance of impaired loans with allowance recorded	4,126		4,126		3,897
Related Allowance	253		253		260
Impaired Financing Receivable, Average Recorded Investment	4,186	4,831	4,090	4,784
Impaired Financing Receivable, Interest Income, Accrual Method	55	55	111	224
Average balance of impaired loans with allowance recorded	4,186	4,812	4,090	4,754
Interest income recognized on impaired loans with allowance recorded	55	$ 53	111	$ 120
Impaired Financing Receivable, Recorded Investment	4,126		4,126		3,897
Impaired Financing Receivable, Unpaid Principal Balance	$ 4,126		$ 4,126		$ 3,897

XML

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - TDRs (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract	Jun. 30, 2017 USD ($) contract	Jun. 30, 2016 USD ($) contract
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	1,178	1,077	2,606	2,511
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 221,059,000	$ 176,582,000	$ 401,460,000	$ 371,091,000
New Troubled Debt Restructuring, Financial effects of modification	$ 7,800,000	$ 4,787,000	$ 9,385,000	$ 5,416,000
Commercial | Interest rate reduction
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts	1	1	2	2
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 18,000	$ 22,000	$ 37,000	$ 39,000
New Troubled Debt Restructuring, Financial effects of modification	0	$ 0	(6,000)	$ 1,000
Commercial | Amortization or maturity date change
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract		199		383
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	168,118,000	$ 133,933,000	280,543,000	$ 256,591,000
New Troubled Debt Restructuring, Financial effects of modification	$ 6,856,000	$ 3,490,000	$ 7,858,000	$ 2,918,000
Commercial | Other
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	1	2	4	10
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 220,000	$ 232,000	$ 380,000	$ 1,090,000
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ 27,000	$ 4,000
Commercial | Commercial and Industrial
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	230	202	470	395
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 168,356,000	$ 134,187,000	$ 280,960,000	$ 257,720,000
New Troubled Debt Restructuring, Financial effects of modification	$ 6,856,000	$ 3,490,000	$ 7,879,000	$ 2,923,000
Commercial | Commercial and Industrial | Amortization or maturity date change
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	228		464
Commercial | Commercial Real Estate
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	19	39	43	65
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 25,027,000	$ 16,153,000	$ 56,290,000	$ 50,211,000
New Troubled Debt Restructuring, Financial effects of modification	$ 427,000	$ 723,000	$ 815,000	$ 1,266,000
Commercial | Commercial Real Estate | Interest rate reduction
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	0	1	0	1
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 0	$ 84,000	$ 0	$ 84,000
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ 0	$ 0
Commercial | Commercial Real Estate | Amortization or maturity date change
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	19	36	43	60
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 25,027,000	$ 16,017,000	$ 56,290,000	$ 49,812,000
New Troubled Debt Restructuring, Financial effects of modification	$ 427,000	$ 723,000	$ 815,000	$ 1,282,000
Commercial | Commercial Real Estate | Other
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	0	2	0	4
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 0	$ 52,000	$ 0	$ 315,000
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ 0	$ (16,000)
Consumer | Automobile
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	537	533	1,268	1,275
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 4,405,000	$ 4,709,000	$ 10,706,000	$ 11,214,000
New Troubled Debt Restructuring, Financial effects of modification	$ (86,000)	$ (321,000)	$ (231,000)	$ (658,000)
Consumer | Automobile | Interest rate reduction
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	5	3	19	7
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 58,000	$ 64,000	$ 236,000	$ 106,000
New Troubled Debt Restructuring, Financial effects of modification	$ (1,000)	$ (5,000)	$ (6,000)	$ (7,000)
Consumer | Automobile | Amortization or maturity date change
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	334	286	811	707
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 2,853,000	$ 2,663,000	$ 7,154,000	$ 6,564,000
New Troubled Debt Restructuring, Financial effects of modification	$ (67,000)	$ (202,000)	$ (178,000)	$ (422,000)
Consumer | Automobile | Chapter 7 bankruptcy
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	198	244	438	561
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 1,494,000	$ 1,982,000	$ 3,316,000	$ 4,544,000
New Troubled Debt Restructuring, Financial effects of modification	$ (18,000)	$ (114,000)	$ (47,000)	$ (229,000)
Consumer | Automobile | Other
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	0	0	0	0
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 0	$ 0	$ 0	$ 0
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ 0	$ 0
Consumer | Home Equity
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	233	182	492	530
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 11,807,000	$ 9,142,000	$ 25,213,000	$ 26,013,000
New Troubled Debt Restructuring, Financial effects of modification	$ 384,000	$ 443,000	$ 339,000	$ 925,000
Consumer | Home Equity | Interest rate reduction
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	9	9	17	29
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 506,000	$ 627,000	$ 1,068,000	$ 2,011,000
New Troubled Debt Restructuring, Financial effects of modification	$ (6,000)	$ (26,000)	$ (13,000)	$ (93,000)
Consumer | Home Equity | Amortization or maturity date change
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	135	127	241	356
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 8,372,000	$ 6,401,000	$ 13,868,000	$ 18,291,000
New Troubled Debt Restructuring, Financial effects of modification	$ 754,000	$ 736,000	$ 1,428,000	$ 2,018,000
Consumer | Home Equity | Chapter 7 bankruptcy
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	77	46	164	145
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 2,417,000	$ 2,114,000	$ 6,036,000	$ 5,711,000
New Troubled Debt Restructuring, Financial effects of modification	$ (364,000)	$ (267,000)	$ (1,402,000)	$ (1,000,000)
Consumer | Home Equity | Other
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	12	0	70	0
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 512,000	$ 0	$ 4,241,000	$ 0
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ 326,000	$ 0
Consumer | Residential Mortgage
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	111	120	252	234
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 10,741,000	$ 12,387,000	$ 26,533,000	$ 25,308,000
New Troubled Debt Restructuring, Financial effects of modification	$ 229,000	$ 452,000	$ 618,000	$ 991,000
Consumer | Residential Mortgage | Interest rate reduction
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	0	5	2	10
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 0	$ 404,000	$ 110,000	$ 1,061,000
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ (17,000)	$ 9,000	$ 15,000
Consumer | Residential Mortgage | Amortization or maturity date change
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	81	108	180	200
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 8,296,000	$ 10,641,000	$ 19,367,000	$ 21,400,000
New Troubled Debt Restructuring, Financial effects of modification	$ 231,000	$ 420,000	$ 489,000	$ 997,000
Consumer | Residential Mortgage | Chapter 7 bankruptcy
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	25	6	49	23
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 1,981,000	$ 1,178,000	$ 4,672,000	$ 2,683,000
New Troubled Debt Restructuring, Financial effects of modification	$ 1,000	$ 49,000	$ 137,000	$ (21,000)
Consumer | Residential Mortgage | Other
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	5	1	21	1
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 464,000	$ 164,000	$ 2,384,000	$ 164,000
New Troubled Debt Restructuring, Financial effects of modification	$ (3,000)	$ 0	$ (17,000)	$ 0
Consumer | RV and Marine FInance
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	44	0	73	0
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 694,000	$ 0	$ 1,380,000	$ 0
New Troubled Debt Restructuring, Financial effects of modification	$ (10,000)	$ 0	$ (26,000)	$ 0
Consumer | RV and Marine FInance | Interest rate reduction
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	0	0	0	0
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 0	$ 0	$ 0	$ 0
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ 0	$ 0
Consumer | RV and Marine FInance | Amortization or maturity date change
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	10	0	24	0
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 150,000	$ 0	$ 626,000	$ 0
New Troubled Debt Restructuring, Financial effects of modification	$ (4,000)	$ 0	$ (16,000)	$ 0
Consumer | RV and Marine FInance | Chapter 7 bankruptcy
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	34	0	49	0
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 544,000	$ 0	$ 754,000	$ 0
New Troubled Debt Restructuring, Financial effects of modification	$ (6,000)	$ 0	$ (10,000)	$ 0
Consumer | RV and Marine FInance | Other
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	0	0	0	0
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 0	$ 0	$ 0	$ 0
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ 0	$ 0
Consumer | Other Consumer
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	4	1	8	12
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 29,000	$ 4,000	$ 378,000	$ 625,000
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ (9,000)	$ (31,000)
Consumer | Other Consumer | Interest rate reduction
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	0	0	1	0
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 0	$ 0	$ 78,000	$ 0
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ (2,000)	$ 0
Consumer | Other Consumer | Amortization or maturity date change
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	2	1	4	5
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 21,000	$ 4,000	$ 288,000	$ 559,000
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ (7,000)	$ (24,000)
Consumer | Other Consumer | Chapter 7 bankruptcy
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	2	0	3	7
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 8,000	$ 0	$ 12,000	$ 66,000
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ 0	$ (7,000)
Consumer | Other Consumer | Other
Financing Receivable, Modifications [Line Items]
New Troubled Debt Restructuring, Number of Contracts | contract	0	0	0	0
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance	$ 0	$ 0	$ 0	$ 0
New Troubled Debt Restructuring, Financial effects of modification	$ 0	$ 0	$ 0	$ 0

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AVAILABLE-FOR-SALE AND OTHER SECURITIES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Available For Sale Securities Transferred To Held To Maturity Securities	$ 1,000.0		$ 1,000.0
Pledged investment securities to secure public and trust deposits, trading account liabilities, US Treasury demand notes and security repurchase agreements	5,400.0		5,400.0
Unrealized Net Losses Recognized In Oci At Time Of Transfer Of Available For Sale Securities Transferred To Held To Maturity Securities	13.5
Nonmarketable equity securities
Schedule of Available-for-sale Securities [Line Items]
Stock issued by Federal Reserve Banks included in other securities	298.0		298.0	$ 299.0
Federal Home Loan Bank of Cincinnati | Nonmarketable equity securities
Schedule of Available-for-sale Securities [Line Items]
Stock issued by the Federal Home Loan Bank included in other securities	287.0		$ 287.0	$ 249.0
Commercial
Schedule of Available-for-sale Securities [Line Items]
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets	$ 3.0	$ 2.0

XML

AVAILABLE-FOR-SALE AND OTHER SECURITIES - Contractual Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost	$ 15,511,976	$ 15,776,855
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale and other securities	15,388,306	15,562,837
U.S. Treasury
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost, Under 1 year	10,139	4,978
Amortized Cost, 1-5 years	502	502
Amortized Cost, 6-10 years	0	0
Amortized Cost, Over 10 years	0	0
Amortized Cost	10,641	5,480
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	10,139	4,988
Fair Value, 1-5 years	505	509
Fair Value, 6-10 years	0	0
Fair Value, Over 10 years	0	0
Available-for-sale and other securities	10,644	5,497
Federal agencies: Mortgage-backed securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost, Under 1 year	0	0
Amortized Cost, 1-5 years	28,085	46,591
Amortized Cost, 6-10 years	200,334	173,941
Amortized Cost, Over 10 years	10,536,086	10,630,929
Amortized Cost	10,764,505	10,851,461
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	0	0
Fair Value, 1-5 years	27,891	46,762
Fair Value, 6-10 years	199,224	176,404
Fair Value, Over 10 years	10,396,940	10,450,176
Available-for-sale and other securities	10,624,055	10,673,342
Federal agencies, Other agencies
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost, Under 1 year	4,103	4,302
Amortized Cost, 1-5 years	9,498	5,092
Amortized Cost, 6-10 years	86,049	63,618
Amortized Cost, Over 10 years	0	0
Amortized Cost	99,650	73,012
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	4,142	4,367
Fair Value, 1-5 years	9,647	5,247
Fair Value, 6-10 years	86,502	63,928
Fair Value, Over 10 years	0	0
Available-for-sale and other securities	100,291	73,542
Total U.S. Treasury, Federal agency securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost	10,874,796	10,929,953
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale and other securities	10,734,990	10,752,381
Municipal securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost, Under 1 year	120,216	169,636
Amortized Cost, 1-5 years	1,113,974	933,893
Amortized Cost, 6-10 years	1,493,652	1,463,459
Amortized Cost, Over 10 years	555,096	693,440
Amortized Cost	3,282,938	3,260,428
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	121,345	166,887
Fair Value, 1-5 years	1,123,450	933,903
Fair Value, 6-10 years	1,508,930	1,464,583
Fair Value, Over 10 years	558,775	684,684
Available-for-sale and other securities	3,312,500	3,250,057
Asset-backed securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost, Under 1 year	0	0
Amortized Cost, 1-5 years	80,018	80,700
Amortized Cost, 6-10 years	144,969	223,352
Amortized Cost, Over 10 years	389,154	520,072
Amortized Cost	614,141	824,124
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	0	0
Fair Value, 1-5 years	80,177	80,560
Fair Value, 6-10 years	146,256	224,565
Fair Value, Over 10 years	368,366	488,356
Available-for-sale and other securities	594,799	793,481
Corporate debt
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost, Under 1 year	3,238	43,223
Amortized Cost, 1-5 years	64,369	78,430
Amortized Cost, 6-10 years	49,546	32,523
Amortized Cost, Over 10 years	21,386	40,361
Amortized Cost	138,539	194,537
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	3,268	43,603
Fair Value, 1-5 years	65,808	80,196
Fair Value, 6-10 years	51,878	32,865
Fair Value, Over 10 years	23,081	42,019
Available-for-sale and other securities	144,035	198,683
Other securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost, Under 1 year	3,151	1,650
Amortized Cost, 1-5 years	800	2,302
Amortized Cost, 6-10 years	0	0
Amortized Cost, Over 10 years	94	10
Amortized Cost	601,562	567,813
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	3,142	1,650
Fair Value, 1-5 years	790	2,283
Fair Value, 6-10 years	0	0
Fair Value, Over 10 years	94	10
Available-for-sale and other securities	601,982	568,235
Nonmarketable equity securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost	585,472	547,704
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale and other securities	585,471	547,704
Mutual funds
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost	11,184	15,286
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale and other securities	11,184	15,286
Marketable equity securities
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Amortized Cost	861	861
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale and other securities	$ 1,301	$ 1,302

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AVAILABLE-FOR-SALE AND OTHER SECURITIES - Schedule of Amortized Cost, Fair Value, and Gross Unrealized Gains and Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 15,511,976	$ 15,776,855
Unrealized Gross Gains	65,250	47,626
Unrealized Gross Losses	(188,920)	(261,644)
Fair Value	15,388,306	15,562,837
U.S. Treasury
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	10,641	5,480
Unrealized Gross Gains	3	17
Unrealized Gross Losses	0	0
Fair Value	10,644	5,497
Federal agencies: Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	10,764,505	10,851,461
Unrealized Gross Gains	8,652	12,548
Unrealized Gross Losses	(149,102)	(190,667)
Fair Value	10,624,055	10,673,342
Federal agencies, Other agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	99,650	73,012
Unrealized Gross Gains	689	536
Unrealized Gross Losses	(48)	(6)
Fair Value	100,291	73,542
Total U.S. Treasury, Federal agency securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	10,874,796	10,929,953
Unrealized Gross Gains	9,344	13,101
Unrealized Gross Losses	(149,150)	(190,673)
Fair Value	10,734,990	10,752,381
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,282,938	3,260,428
Unrealized Gross Gains	47,711	28,431
Unrealized Gross Losses	(18,149)	(38,802)
Fair Value	3,312,500	3,250,057
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	614,141	824,124
Unrealized Gross Gains	2,256	1,492
Unrealized Gross Losses	(21,598)	(32,135)
Fair Value	594,799	793,481
Corporate debt
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	138,539	194,537
Unrealized Gross Gains	5,500	4,161
Unrealized Gross Losses	(4)	(15)
Fair Value	144,035	198,683
Other securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	601,562	567,813
Unrealized Gross Gains	439	441
Unrealized Gross Losses	(19)	(19)
Fair Value	$ 601,982	$ 568,235

XML

AVAILABLE-FOR-SALE AND OTHER SECURITIES AVAILABLE-FOR-SALE AND OTHER SECURITIES - Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value
Less than 12 Months	$ 9,773,917	$ 10,687,088
Over 12 Months	459,490	494,614
Total	10,233,407	11,181,702
Unrealized Losses
Less than 12 Months	(161,205)	(221,568)
Over 12 Months	(27,715)	(40,076)
Total	(188,920)	(261,644)
Federal agencies: Mortgage-backed securities
Fair Value
Less than 12 Months	8,879,526	8,908,470
Over 12 Months	42,504	41,706
Total	8,922,030	8,950,176
Unrealized Losses
Less than 12 Months	(147,900)	(189,318)
Over 12 Months	(1,202)	(1,349)
Total	(149,102)	(190,667)
Federal agencies, Other agencies
Fair Value
Less than 12 Months	12,793	924
Over 12 Months	0	0
Total	12,793	924
Unrealized Losses
Less than 12 Months	(48)	(6)
Over 12 Months	0	0
Total	(48)	(6)
Total U.S. Treasury, Federal agency securities
Fair Value
Less than 12 Months	8,892,319	8,909,394
Over 12 Months	42,504	41,706
Total	8,934,823	8,951,100
Unrealized Losses
Less than 12 Months	(147,948)	(189,324)
Over 12 Months	(1,202)	(1,349)
Total	(149,150)	(190,673)
Municipal securities
Fair Value
Less than 12 Months	702,379	1,412,152
Over 12 Months	241,487	272,292
Total	943,866	1,684,444
Unrealized Losses
Less than 12 Months	(11,895)	(29,175)
Over 12 Months	(6,254)	(9,627)
Total	(18,149)	(38,802)
Asset-backed securities
Fair Value
Less than 12 Months	177,834	361,185
Over 12 Months	173,808	178,924
Total	351,642	540,109
Unrealized Losses
Less than 12 Months	(1,348)	(3,043)
Over 12 Months	(20,250)	(29,092)
Total	(21,598)	(32,135)
Corporate debt
Fair Value
Less than 12 Months	595	3,567
Over 12 Months	200	200
Total	795	3,767
Unrealized Losses
Less than 12 Months	(4)	(15)
Over 12 Months	0	0
Total	(4)	(15)
Other securities
Fair Value
Less than 12 Months	790	790
Over 12 Months	1,491	1,492
Total	2,281	2,282
Unrealized Losses
Less than 12 Months	(10)	(11)
Over 12 Months	(9)	(8)
Total	$ (19)	$ (19)

XML

AVAILABLE-FOR-SALE AND OTHER SECURITIES AVAILABLE-FOR-SALE AND OTHER SECURITIES - Gross Realized Gains (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Gross gains on sales of securities	$ 3,814	$ 3,391	$ 4,359	$ 3,391
Gross (losses) on sales of securities	120	2,659	649	2,659
Net gain on sales of securities	3,694	732	3,710	732
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	(3,559)	(76)	(3,583)	(76)
Gain (Loss) on Sale of Investments	$ 135	$ 656	$ 127	$ 656

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AVAILABLE-FOR-SALE AND OTHER SECURITIES - Collateralized Debt Obligation (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Unrealized Gross Losses	$ (188,920)	$ (261,644)
Pooled Trust Preferred
Schedule of Available-for-sale Securities [Line Items]
Par Value	91,009	137,197
Amortized Cost	59,012	101,210
Fair Value	42,575	76,003
Unrealized Gross Losses	(16,437)	$ (25,207)
Pooled Trust Preferred | MM Comm III
Schedule of Available-for-sale Securities [Line Items]
Par Value	4,509
Amortized Cost	4,308
Fair Value	3,581
Unrealized Gross Losses	$ (727)
Actual Deferrals and Defaults as Percent of Original Collateral	5.00%
Expected Defaults as Percent of Remaining Performing Collateral	5.00%
Excess Subordination	39.00%
Pooled Trust Preferred | Pre TSL IX
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 5,000
Amortized Cost	3,955
Fair Value	3,275
Unrealized Gross Losses	$ (680)
Actual Deferrals and Defaults as Percent of Original Collateral	16.00%
Expected Defaults as Percent of Remaining Performing Collateral	8.00%
Excess Subordination	11.00%
Pooled Trust Preferred | Pre TSL XI
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 25,000
Amortized Cost	19,239
Fair Value	15,867
Unrealized Gross Losses	$ (3,372)
Actual Deferrals and Defaults as Percent of Original Collateral	14.00%
Expected Defaults as Percent of Remaining Performing Collateral	8.00%
Excess Subordination	14.00%
Pooled Trust Preferred | Reg Diversified
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 25,500
Amortized Cost	510
Fair Value	510
Unrealized Gross Losses	$ 0
Actual Deferrals and Defaults as Percent of Original Collateral	32.00%
Expected Defaults as Percent of Remaining Performing Collateral	8.00%
Excess Subordination	0.00%
Pooled Trust Preferred | Tropic III
Schedule of Available-for-sale Securities [Line Items]
Par Value	$ 31,000
Amortized Cost	31,000
Fair Value	19,342
Unrealized Gross Losses	$ (11,658)
Actual Deferrals and Defaults as Percent of Original Collateral	16.00%
Expected Defaults as Percent of Remaining Performing Collateral	7.00%
Excess Subordination	41.00%

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AVAILABLE-FOR-SALE AND OTHER SECURITIES AVAILABLE-FOR-SALE AND OTHER SECURITIES - Security Impairment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Impairment losses recognized in earnings on available-for-sale securities	$ 3,559	$ 76	$ 3,583	$ 76
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance, beginning of year	7,262	18,368	11,796	18,368
Reductions from sales	0	(8,613)	(4,558)	(8,613)
Additional credit losses	3,559	76	3,583	76
Balance, end of year	10,821	9,831	10,821	9,831
Trust Preferred Securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Impairment losses recognized in earnings on available-for-sale securities	3,559	0	3,559	0
Fixed Income Securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Impairment losses recognized in earnings on available-for-sale securities	$ 0	$ 76	$ 24	$ 76

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HELD-TO-MATURITY SECURITIES - Narrative (Details)	6 Months Ended
	Jun. 30, 2017 USD ($)
Held-to-maturity Securities [Abstract]
Other than temporary impairment losses, held-to-maturity securities	$ 0

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HELD-TO-MATURITY SECURITIES - Contractual Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Amortized Cost	$ 8,279,577	$ 7,806,939
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value	8,259,402	7,787,268
Federal agencies: Mortgage-backed securities
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Held-to-maturity Securities, Under 1 year	0	0
Held-to-maturity Securities, 1-5 years	0	0
Held-to-maturity Securities, 6-10 years	70,527	41,261
Held-to-maturity Securities, Over 10 years	7,634,775	7,157,083
Amortized Cost	7,705,302	7,198,344
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	0	0
Fair Value, 1-5 years	0	0
Fair Value, 6-10 years	70,355	40,791
Fair Value, Over 10 years	7,616,513	7,139,943
Fair Value	7,686,868	7,180,734
Federal agencies, Other agencies
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Held-to-maturity Securities, Under 1 year	0	0
Held-to-maturity Securities, 1-5 years	0	0
Held-to-maturity Securities, 6-10 years	376,837	398,341
Held-to-maturity Securities, Over 10 years	191,592	204,083
Amortized Cost	568,429	602,424
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	0	0
Fair Value, 1-5 years	0	0
Fair Value, 6-10 years	376,750	399,452
Fair Value, Over 10 years	190,149	201,180
Fair Value	566,899	600,632
Total U.S. Treasury, Federal agency securities
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Amortized Cost	8,273,731	7,800,768
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value	8,253,767	7,781,366
Municipal securities
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract]
Held-to-maturity Securities, Under 1 year	0	0
Held-to-maturity Securities, 1-5 years	0	0
Held-to-maturity Securities, 6-10 years	0	0
Held-to-maturity Securities, Over 10 years	5,846	6,171
Amortized Cost	5,846	6,171
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value, Under 1 year	0	0
Fair Value, 1-5 years	0	0
Fair Value, 6-10 years	0	0
Fair Value, Over 10 years	5,635	5,902
Fair Value	$ 5,635	$ 5,902

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HELD-TO-MATURITY SECURITIES - Amortized Cost, Gross Unrealized Gains and Losses, & Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 8,279,577	$ 7,806,939
Unrealized Gross Gains	19,324	22,573
Unrealized Gross Losses	(39,499)	(42,244)
Fair Value	8,259,402	7,787,268
Federal agencies: Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	7,705,302	7,198,344
Unrealized Gross Gains	17,950	20,883
Unrealized Gross Losses	(36,384)	(38,493)
Fair Value	7,686,868	7,180,734
Federal agencies, Other agencies
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	568,429	602,424
Unrealized Gross Gains	1,374	1,690
Unrealized Gross Losses	(2,904)	(3,482)
Fair Value	566,899	600,632
Total U.S. Treasury, Federal agency securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	8,273,731	7,800,768
Unrealized Gross Gains	19,324	22,573
Unrealized Gross Losses	(39,288)	(41,975)
Fair Value	8,253,767	7,781,366
Municipal securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	5,846	6,171
Unrealized Gross Gains	0	0
Unrealized Gross Losses	(211)	(269)
Fair Value	$ 5,635	$ 5,902

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HELD-TO-MATURITY SECURITIES - Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value
Less than 12 Months	$ 4,986,941	$ 3,274,469
Over 12 Months	160,437	186,226
Total	5,147,378	3,460,695
Unrealized Losses
Less than 12 Months	(34,463)	(35,221)
Over 12 Months	(5,036)	(7,023)
Total	(39,499)	(42,244)
Federal agencies: Mortgage-backed securities
Fair Value
Less than 12 Months	4,606,283	2,855,360
Over 12 Months	160,437	186,226
Total	4,766,720	3,041,586
Unrealized Losses
Less than 12 Months	(31,348)	(31,470)
Over 12 Months	(5,036)	(7,023)
Total	(36,384)	(38,493)
Federal agencies, Other agencies
Fair Value
Less than 12 Months	375,023	413,207
Over 12 Months	0	0
Total	375,023	413,207
Unrealized Losses
Less than 12 Months	(2,904)	(3,482)
Over 12 Months	0	0
Total	(2,904)	(3,482)
Total U.S. Treasury, Federal agency securities
Fair Value
Less than 12 Months	4,981,306	3,268,567
Over 12 Months	160,437	186,226
Total	5,141,743	3,454,793
Unrealized Losses
Less than 12 Months	(34,252)	(34,952)
Over 12 Months	(5,036)	(7,023)
Total	(39,288)	(41,975)
Municipal securities
Fair Value
Less than 12 Months	5,635	5,902
Over 12 Months	0	0
Total	5,635	5,902
Unrealized Losses
Less than 12 Months	(211)	(269)
Over 12 Months	0	0
Total	$ (211)	$ (269)

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LOAN SALES AND SECURITIZATIONS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Residential Mortgage
Servicing Assets at Fair Value [Line Items]
Servicing income	$ 14	$ 12
Unpaid principal balance of third party serviced loans	19,100		$ 18,900
Automobile
Servicing Assets at Fair Value [Line Items]
Servicing income	5	2
Unpaid principal balance of third party serviced loans	1,300		1,700
Small Business Association (SBA) Loan
Servicing Assets at Fair Value [Line Items]
Servicing income	3	$ 2
Unpaid principal balance of third party serviced loans	$ 1,200		$ 1,100

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LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio (Details) - Residential Mortgage - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Servicing Asset at Amortized Cost [Line Items]
Loans sold with servicing retained	$ 798,399	$ 715,589	$ 1,645,752	$ 1,348,055
Pretax gains resulting from above loan sales	$ 16,943	$ 18,618	$ 39,133	$ 32,731

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LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio, MSRs Fair Value Method (Details) - Residential Mortgage - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Servicing Asset at Fair Value, Amount [Roll Forward]
Fair value, beginning of period	$ 13,307	$ 14,819	$ 13,747	$ 17,585
Time decay	(217)	(245)	(448)	(518)
Payoffs	(217)	(465)	(581)	(969)
Changes in valuation inputs or assumptions	(345)	(1,004)	(190)	(2,993)
Fair value, end of period:	$ 12,528	$ 13,105	$ 12,528	$ 13,105
Fair value method
Servicing Asset at Fair Value, Amount [Roll Forward]
Weighted-average life (years)	5 years 8 months	5 years 1 month	5 years 8 months	5 years 1 month

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LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio, MSRs Amortization Method (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Fair value, end of period	$ 224,656		$ 224,656		$ 225,578
Residential Mortgage
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Carrying value, beginning of period	177,812	$ 127,275	172,466	$ 143,133
New servicing assets created	8,218	7,277	17,853	13,386
Impairment (charge) / recovery	(2,806)	(7,295)	(1,007)	(23,635)
Amortization and other	(6,733)	(5,965)	(12,821)	(11,592)
Carrying value, end of period	176,491	121,292	176,491	121,292
Fair value, end of period	$ 177,138	$ 121,464	$ 177,138	$ 121,464
Residential Mortgage | Amortization method
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Weighted-average life (years)	7 years 1 month	6 years 1 month	7 years 1 month	6 years 1 month

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LOAN SALES AND SECURITIZATIONS LOAN SALES AND SECURTIZIATIONS - Residential Mortgage Portfolio, MSRs Fair Value Method Key Assumptions (Details) - Fair value method - Residential Mortgage - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Servicing Assets at Fair Value [Line Items]
Constant prepayment rate (annualized), actual	11.40%	10.90%
Constant prepayment rate (annualized), 10% adverse change	$ (476)		$ (501)
Constant prepayment rate (annualized), 20% adverse change	$ (919)		(970)
Spread over forward interest rate swap rates, actual	8.76%	5.36%
Spread over forward interest rate swap rates, 10% adverse change	$ (463)		(454)
Spread over forward interest rate swap rates, 20% adverse change	$ (874)		$ (879)

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LOAN SALES AND SECURITIZATIONS - Residential Mortgage Portfolio, MSRs Amortization Method Key Assumptions (Details) - Amortization method - Residential Mortgage - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Servicing Asset at Amortized Cost [Line Items]
Constant prepayment rate (annualized), actual	8.20%	7.80%
Constant prepayment rate (annualized), 10% adverse change	$ (4,731)		$ (4,510)
Constant prepayment rate (annualized), 20% adverse change	$ (9,191)		(8,763)
Spread over forward interest rate swap rates, actual	10.84%	11.73%
Spread over forward interest rate swap rates, 10% adverse change	$ (6,566)		(5,259)
Spread over forward interest rate swap rates, 20% adverse change	$ (12,374)		$ (10,195)

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LOAN SALES AND SECURITIZATIONS - Automobile Loans, MSRs Amortization Method (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Fair value, end of period	$ 224,656		$ 224,656		$ 225,578
Automobile
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Carrying value, beginning of period	15,159	$ 7,029	18,285	$ 8,771
Amortization and other	(2,635)	(1,571)	(5,761)	(3,313)
Fair value, end of period	12,571	5,551	12,571	5,551
Carrying value, end of period	$ 12,524	$ 5,458	$ 12,524	$ 5,458
Automobile | Amortization method
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Weighted-average life (years)	3 years 9 months	3 years	3 years 9 months	3 years

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LOAN SALES AND SECURITIZATIONS - Automobile Loans, MSRs Amortizations Method Key Assumptions (Details) - Amortization method - Automobile - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Servicing Asset at Amortized Cost [Line Items]
Constant prepayment rate (annualized), actual	19.91%	19.98%
Constant prepayment rate (annualized), 10% adverse change	$ (688)		$ (1,047)
Constant prepayment rate (annualized), 20% adverse change	$ (1,391)		(2,026)
Spread over forward interest rate swap rates, actual	5.00%	5.00%
Spread over forward interest rate swap rates, 10% adverse change	$ (17)		(26)
Spread over forward interest rate swap rates, 20% adverse change	$ (34)		$ (53)

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LOAN SALES AND SECURITIZATIONS - Small Business Association Portfolio (Details) - Small Business Association (SBA) Loan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Transfer of Financial Assets Accounted for as Sales [Line Items]
Loans with servicing retained sold	$ 87,705	$ 58,629	$ 165,377	$ 104,518
Pretax gains resulting from above loan sales	$ 7,109	$ 4,662	$ 12,927	$ 8,183

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LOAN SALES AND SECURITIZATIONS - Small Business Association Portfolio, MSRs Amortization Method (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Fair value, end of period	$ 224,656		$ 224,656		$ 225,578
Small Business Association (SBA) Loan
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Carrying value, beginning of period	21,399	$ 19,526	21,080	$ 19,747
New servicing assets created	4,121	1,868	5,596	3,380
Amortization and other	(2,407)	(1,782)	(3,563)	(3,515)
Carrying value, end of period	23,113	19,612	23,113	19,612
Fair value, end of period	$ 26,853	$ 23,823	$ 26,853	$ 23,823
Weighted-average life (years)	3 years 4 months	3 years 4 months	3 years 3 months 18 days	3 years 4 months

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LOAN SALES AND SECURITIZATIONS - Small Business Association Portfolio, MSRs Amortization Method Key Assumptions (Details) - Small Business Association (SBA) Loan - Amortization method - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Servicing Asset at Amortized Cost [Line Items]
Constant prepayment rate (annualized), actual	7.50%	7.40%
Constant prepayment rate (annualized), 10% adverse change	$ (363)		$ (324)
Constant prepayment rate (annualized), 20% adverse change	$ (721)		(644)
Spread over forward interest rate swap rates, actual	15.00%	15.00%
Spread over forward interest rate swap rates, 10% adverse change	$ (721)		(1,270)
Spread over forward interest rate swap rates, 20% adverse change	$ (1,411)		$ (1,870)

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LONG-TERM DEBT (Details) - Senior Notes - USD ($)	3 Months Ended
	Jun. 30, 2017	Mar. 07, 2017
Huntington National Bank Senior Note Due March 2020, 2.375 Percent [Member]
Debt Instrument [Line Items]
Debt face amount		$ 700,000,000.0
Debt percent of value		99.994%
Debt stated interest rate		2.375%
Debt Instrument, Redemption Price, Percentage	100.00%
Huntington National Bank Senior Floating Rate Notes Due March 2020 [Member]
Debt Instrument [Line Items]
Debt face amount		$ 300,000,000.0
Debt percent of value		100.00%
Debt Instrument, Description of Variable Rate Basis	three month LIBOR
Debt Instrument, Basis Spread on Variable Rate	51.00%

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OTHER COMPREHENSIVE INCOME - Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Pretax
Other comprehensive income (loss), pretax	$ 62,596	$ 52,116	$ 77,714	$ 143,468
Tax (Expense) Benefit
Total other comprehensive income (loss), tax (expense) benefit	(22,093)	(18,872)	(27,055)	(51,352)
After-tax
Other comprehensive income (loss), net of tax	40,503	33,244	50,659	92,116
Accumulated OTTI
Pretax
Other comprehensive income (loss), pretax	2,478	1,032	3,288	(2,602)
Tax (Expense) Benefit
Total other comprehensive income (loss), tax (expense) benefit	(876)	(365)	(1,162)	920
After-tax
Other comprehensive income (loss), net of tax	1,602	667	2,126	(1,682)
Unrealized gains and (losses) on debt securities | Debt Securities
Pretax
Other comprehensive income (loss), before reclassifications, before tax	53,285	50,278	62,282	130,746
Reclassification adjustment, before tax	3,988	(2,294)	9,862	(2,758)
Tax (Expense) Benefit
Other comprehensive income (loss) before reclassifications, tax	(18,811)	(18,234)	(21,607)	(46,919)
Reclassification adjustment, tax	(1,410)	811	(3,487)	975
After-tax
Other comprehensive income (loss), before reclassifications, net of tax	34,474	32,044	40,675	83,827
Reclassification adjustment, net of tax	2,578	(1,483)	6,375	(1,783)
Unrealized gains and (losses) on debt securities and Accumulated OTTI | Debt Securities
Pretax
Other comprehensive income (loss), pretax	59,751	49,016	75,432	125,386
Tax (Expense) Benefit
Total other comprehensive income (loss), tax (expense) benefit	(21,097)	(17,788)	(26,256)	(45,024)
After-tax
Other comprehensive income (loss), net of tax	38,654	31,228	49,176	80,362
Unrealized gains and (losses) on debt securities and Accumulated OTTI | Equity Securities
Pretax
Other comprehensive income (loss), pretax	0	66	0	170
Tax (Expense) Benefit
Total other comprehensive income (loss), tax (expense) benefit	0	(24)	0	(60)
After-tax
Other comprehensive income (loss), net of tax	0	42	0	110
Unrealized gains and (losses) on cash flow hedging derivatives
Pretax
Other comprehensive income (loss), before reclassifications, before tax	1,220	1,989	(611)	16,218
Reclassification adjustment, before tax	427	(248)	987	(892)
Other comprehensive income (loss), pretax	1,647	1,741	376	15,326
Tax (Expense) Benefit
Other comprehensive income (loss) before reclassifications, tax	(427)	(696)	214	(5,676)
Reclassification adjustment, tax	(150)	89	(346)	313
Total other comprehensive income (loss), tax (expense) benefit	(577)	(607)	(132)	(5,363)
After-tax
Other comprehensive income (loss), before reclassifications, net of tax	793	1,293	(397)	10,542
Reclassification adjustment, net of tax	277	(159)	641	(579)
Other comprehensive income (loss), net of tax	1,070	1,134	244	9,963
Unrealized gains (losses) for pension and other post- retirement obligations
Pretax
Other comprehensive income (loss), pretax	1,198	1,293	1,906	2,586
Tax (Expense) Benefit
Total other comprehensive income (loss), tax (expense) benefit	(419)	(453)	(667)	(905)
After-tax
Other comprehensive income (loss), net of tax	$ 779	$ 840	$ 1,239	$ 1,681

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OTHER COMPREHENSIVE INCOME OTHER COMPREHENSIVE INCOME - AOCI Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period		$ 10,308,146	$ 6,594,606
Other comprehensive income before reclassifications		42,404	92,797
Amounts reclassified from accumulated OCI to earnings		8,255	(681)
Period change			92,116
Balance, end of period	$ 10,654,182	10,654,182	7,507,304
Unrealized gains and (losses) on debt securities | Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period		(192,764)	8,361
Other comprehensive income before reclassifications		42,801	82,145
Amounts reclassified from accumulated OCI to earnings		6,375	(1,783)
Period change	49,176		80,362
Balance, end of period	(143,588)	(143,588)	88,723
Unrealized gains and (losses) on debt securities | Equity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period		287	176
Other comprehensive income before reclassifications		0	110
Amounts reclassified from accumulated OCI to earnings		0	0
Period change	0		110
Balance, end of period	287	287	286
Unrealized gains and (losses) on cash flow hedging derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period		(2,634)	(3,948)
Other comprehensive income before reclassifications		(397)	10,542
Amounts reclassified from accumulated OCI to earnings		641	(579)
Period change	244		9,963
Balance, end of period	(2,390)	(2,390)	6,015
Unrealized gains (losses) for pension and other post- retirement obligations
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period		(205,905)	(230,747)
Other comprehensive income before reclassifications		0	0
Amounts reclassified from accumulated OCI to earnings		1,239	1,681
Period change	1,239		1,681
Balance, end of period	(204,666)	(204,666)	(229,066)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period		(401,016)	(226,158)
Period change	50,659
Balance, end of period	$ (350,357)	(350,357)	(134,042)
Reclassification out of Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net unrealized loss on securities transfer		$ (98,000)	$ (82,000)

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OTHER COMPREHENSIVE INCOME - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest income - held-to-maturity securities - taxable	$ 44,276	$ 35,420	$ 89,471	$ 72,209
Noninterest income - net gains (losses) on sale of securities	3,694	732	3,710	732
Interest income - loans and leases	699,838	469,770	1,375,772	933,192
Noninterest income - other income	44,219	36,187	84,954	66,319
Noninterest expense - personnel costs	(391,997)	(298,949)	(773,997)	(584,346)
Income before income taxes	350,388	228,823	617,766	455,094
Provision for income taxes	(78,647)	(54,283)	(137,931)	(109,240)
Net income applicable to common shares	252,852	154,666	442,068	317,982
Unrealized gains and (losses) on debt securities | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest income - held-to-maturity securities - taxable	(2,284)	740	(5,890)	1,204
Noninterest income - net gains (losses) on sale of securities	1,855	1,630	(389)	1,630
Accumulated OTTI | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Noninterest income - net gains (losses) on sale of securities	(3,559)	(76)	(3,583)	(76)
Unrealized gains and (losses) on debt securities and Accumulated OTTI | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(3,988)	2,294	(9,862)	2,758
Provision for income taxes	1,410	(811)	3,487	(975)
Net income applicable to common shares	(2,578)	1,483	(6,375)	1,783
Unrealized gains and (losses) on cash flow hedging derivatives | Interest Rate Contract | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest income - loans and leases	(427)	248	(987)	893
Noninterest income - other income	0	0	0	(1)
Income before income taxes	(427)	248	(987)	892
Provision for income taxes	150	(89)	346	(313)
Net income applicable to common shares	(277)	159	(641)	579
Amortization of defined benefit pension and post-retirement items: actuarial gains (losses) | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Noninterest expense - personnel costs	(1,690)	(1,785)	(2,890)	(3,570)
Amortization of defined benefit pension and post-retirement items: Prior service credit | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Noninterest expense - personnel costs	492	492	984	984
Unrealized gains (losses) for pension and other post- retirement obligations | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(1,198)	(1,293)	(1,906)	(2,586)
Provision for income taxes	419	453	667	905
Net income applicable to common shares	$ (779)	$ (840)	$ (1,239)	$ (1,681)

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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Basic earnings per common share:
Net income	$ 271,741	$ 174,540	$ 479,835	$ 345,854
Preferred stock dividends	(18,889)	(19,874)	(37,767)	(27,872)
Net income available to common shareholders	252,852	154,666	442,068	317,982
Effect of assumed preferred stock conversion	0	0	0	0
Net income applicable to diluted earnings per share	$ 252,852	$ 154,666	$ 442,068	$ 317,982
Average common shares issued and outstanding (in shares)	1,088,934	798,167	1,087,654	796,961
Basic earnings per common share (in usd per share)	$ 0.23	$ 0.19	$ 0.41	$ 0.40
Dilutive potential common shares:
Stock options and restricted stock units and awards	16,329	9,785	17,734	10,085
Shares held in deferred compensation plans	3,108	2,282	3,030	2,178
Other	156	137	154	136
Dilutive potential common shares:	19,593	12,204	20,918	12,399
Total diluted average common shares issued and outstanding (in shares)	1,108,527	810,371	1,108,572	809,360
Diluted earnings per common share (in usd per share)	$ 0.23	$ 0.19	$ 0.40	$ 0.39
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options outstanding to purchase common stock shares having antidilutive effect	2,600	4,700	1,800	4,000

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BENEFIT PLANS - Narrative (Details)	6 Months Ended
	Jun. 30, 2017 year
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Match - Base pay contributed to the plan	matches participant contributions, up to the first 4%
Base Pay Contributed To Plan Profit Sharing	profit-sharing contribution equal to 1% of eligible participants’ 2016
Post Retirement Benefits
Benefit Plans (Textuals) [Abstract]
Employees retirement age for health care and life insurance benefits under unfunded defined benefit post-retirement plan	55
Deferred Compensation Arrangement With Individual Requisite Service Period	10 years

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BENEFIT PLANS - Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Pension Benefits
Components of net periodic benefit expense [Abstract]
Service cost	$ 640	$ 1,025	$ 1,280	$ 2,050
Interest cost	7,478	6,748	14,955	13,496
Expected return on plan assets	(13,803)	(10,224)	(27,606)	(20,447)
Amortization of prior service cost	0	0	0	0
Amortization of gain (loss)	1,747	1,865	3,494	3,729
Settlements	2,500	3,400	5,000	6,800
Net periodic (benefit) cost	(1,438)	2,814	(2,877)	5,628
Post Retirement Benefits
Components of net periodic benefit expense [Abstract]
Service cost	21	0	43	0
Interest cost	99	54	198	109
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	(492)	(492)	(984)	(984)
Amortization of gain (loss)	(54)	(72)	(109)	(144)
Settlements	0	0	0	0
Net periodic (benefit) cost	$ (426)	$ (510)	$ (852)	$ (1,019)

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BENEFIT PLANS - Costs of Retirement Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost Recognized	$ 11	$ 8	$ 22	$ 16

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FAIR VALUES OF ASSETS AND LIABILITIES - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$ 654,087	$ 438,224
Mortgages Held-to-maturity, Fair Value Disclosure	103,741	82,319
Fair Value Measured On Recurring Basis Mortgages Held For Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held For Sale Unpaid Principal	628,684	433,760
Difference	25,403	4,464
Loans held for investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Difference	(9,373)	(9,679)
Mortgages Held-to-maturity, Fair Value Disclosure	103,741	82,319
Mortgages Held To Maturity Unpaid Principal	113,114	91,998
90 or more days | Fair Value Measured On Recurring Basis Mortgages Held For Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held For Sale Unpaid Principal	72	0
Difference	0	0
Loans held for sale	72	0
90 or more days | Loans held for investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Difference	(2,408)	(2,674)
Mortgages Held-to-maturity, Fair Value Disclosure	13,039	8,408
Mortgages Held To Maturity Unpaid Principal	$ 15,447	$ 11,082

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FAIR VALUES OF ASSETS AND LIABILITIES - Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets measured at fair value on a recurring basis
Loans held for investment	$ 103,741	$ 82,319
Consumer loans	103,741	82,319
Trading account securities	94,767	133,295
Available-for-sale and other securities	15,388,306	15,562,837
U.S. Treasury
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	10,644	5,497
Federal agencies: Mortgage-backed securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	10,624,055	10,673,342
Federal agencies, Other agencies
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	100,291	73,542
Municipal securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	3,312,500	3,250,057
Corporate debt
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	144,035	198,683
Recurring Basis
Assets measured at fair value on a recurring basis
Loans held for sale	654,087	438,224
Trading account securities	94,767	133,295
Available-for-sale and other securities	14,802,835	15,015,133
MSRs	12,528	13,747
Derivative assets netting	(144,951)	(181,940)
Net amounts of assets presented in the condensed consolidated balance sheets	190,012	238,219
Liabilities measured at fair value on a recurring basis
Gross amounts offset in the condensed consolidated balance sheets	(212,487)	(272,361)
Derivative liabilities	78,358	98,286
Short-term borrowings	4,580	474
Recurring Basis | U.S. Treasury
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	10,644	5,497
Recurring Basis | Federal agencies: Mortgage-backed securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	10,624,055	10,673,342
Recurring Basis | Federal agencies, Other agencies
Assets measured at fair value on a recurring basis
Trading account securities	6,868
Available-for-sale and other securities	100,291	73,542
Recurring Basis | Municipal securities
Assets measured at fair value on a recurring basis
Trading account securities	323	1,148
Available-for-sale and other securities	3,312,500	3,250,057
Recurring Basis | Asset-backed Securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	594,799	793,481
Recurring Basis | Corporate debt
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	144,035	198,683
Recurring Basis | Other Debt Obligations [Member]
Assets measured at fair value on a recurring basis
Trading account securities	87,576	132,147
Available-for-sale and other securities	16,511	20,531
Recurring Basis | Level 1
Assets measured at fair value on a recurring basis
Loans held for sale	0	0
Loans held for investment	0	0
Trading account securities	86,560	132,147
Available-for-sale and other securities	23,129	22,085
MSRs	0	0
Gross amounts of recognized assets	0	0
Liabilities measured at fair value on a recurring basis
Gross amounts of recognized liabilities	0	0
Short-term borrowings	4,580	474
Recurring Basis | Level 1 | U.S. Treasury
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	10,644	5,497
Recurring Basis | Level 1 | Federal agencies: Mortgage-backed securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	0	0
Recurring Basis | Level 1 | Federal agencies, Other agencies
Assets measured at fair value on a recurring basis
Trading account securities	0
Available-for-sale and other securities	0	0
Recurring Basis | Level 1 | Municipal securities
Assets measured at fair value on a recurring basis
Trading account securities	0	0
Available-for-sale and other securities	0	0
Recurring Basis | Level 1 | Asset-backed Securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	0	0
Recurring Basis | Level 1 | Corporate debt
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	0	0
Recurring Basis | Level 1 | Other Debt Obligations [Member]
Assets measured at fair value on a recurring basis
Trading account securities	86,560	132,147
Available-for-sale and other securities	12,485	16,588
Recurring Basis | Level 2
Assets measured at fair value on a recurring basis
Loans held for sale	654,087	438,224
Loans held for investment	59,886	34,439
Trading account securities	8,207	1,148
Available-for-sale and other securities	11,865,124	12,119,001
MSRs	0	0
Gross amounts of recognized assets	325,736	414,412
Liabilities measured at fair value on a recurring basis
Gross amounts of recognized liabilities	284,796	362,777
Short-term borrowings	0	0
Recurring Basis | Level 2 | U.S. Treasury
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	0	0
Recurring Basis | Level 2 | Federal agencies: Mortgage-backed securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	10,624,055	10,673,342
Recurring Basis | Level 2 | Federal agencies, Other agencies
Assets measured at fair value on a recurring basis
Trading account securities	6,868
Available-for-sale and other securities	100,291	73,542
Recurring Basis | Level 2 | Municipal securities
Assets measured at fair value on a recurring basis
Trading account securities	323	1,148
Available-for-sale and other securities	440,493	452,013
Recurring Basis | Level 2 | Asset-backed Securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	552,224	717,478
Recurring Basis | Level 2 | Corporate debt
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	144,035	198,683
Recurring Basis | Level 2 | Other Debt Obligations [Member]
Assets measured at fair value on a recurring basis
Trading account securities	1,016	0
Available-for-sale and other securities	4,026	3,943
Recurring Basis | Level 3
Assets measured at fair value on a recurring basis
Loans held for sale	0	0
Consumer loans	43,855	47,880
Trading account securities	0	0
Available-for-sale and other securities	2,914,582	2,874,047
MSRs	12,528	13,747
Gross amounts of recognized assets	9,227	5,747
Liabilities measured at fair value on a recurring basis
Gross amounts of recognized liabilities	6,049	7,870
Short-term borrowings	0	0
Recurring Basis | Level 3 | U.S. Treasury
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	0	0
Recurring Basis | Level 3 | Federal agencies: Mortgage-backed securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	0	0
Recurring Basis | Level 3 | Federal agencies, Other agencies
Assets measured at fair value on a recurring basis
Trading account securities	0
Available-for-sale and other securities	0	0
Recurring Basis | Level 3 | Municipal securities
Assets measured at fair value on a recurring basis
Trading account securities	0	0
Available-for-sale and other securities	2,872,007	2,798,044
Recurring Basis | Level 3 | Asset-backed Securities
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	42,575	76,003
Recurring Basis | Level 3 | Corporate debt
Assets measured at fair value on a recurring basis
Available-for-sale and other securities	0	0
Recurring Basis | Level 3 | Other Debt Obligations [Member]
Assets measured at fair value on a recurring basis
Trading account securities	0	0
Available-for-sale and other securities	$ 0	$ 0

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FAIR VALUES OF ASSETS AND LIABILITIES - Level 3 Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Derivative Instruments Level 3 Roll Forward:
Opening balance			$ (2,123)	$ 6,056
Transfers into Level 3			0	0
Transfers out of Level 3 (1)			(2,457)	(3,423)
Total gains/losses for the period:
Included in earnings			7,758	10,118
Included in OCI			0	0
Purchases/originations			0	0
Sales			0	0
Repayments			0	0
Issues			0	0
Settlements			0	0
Closing balance	$ 3,178	$ 12,751	3,178	12,751
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date			7,758	10,218
MSRs
Assets Level 3 Roll Forward:
Opening balance	13,307	14,819	13,747	17,585
Transfers into Level 3			0	0
Transfers out of Level 3 (1)			0	0
Total gains/losses for the period:
Included in earnings	(779)	(1,714)	(1,219)	(4,480)
Included in OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Repayments	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Closing balance	12,528	13,105	12,528	13,105
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	(779)	(1,714)	(1,219)	(4,480)
Net Derivative Instruments Level 3 Roll Forward:
Transfers into Level 3	0	0
Transfers out of Level 3 (1)	0	0
Derivative Instruments
Assets Level 3 Roll Forward:
Opening balance	2,694	10,347
Total gains/losses for the period:
Included in earnings	2,608	4,912
Included in OCI	0	0
Purchases	0	0
Sales	0	0
Repayments	0	0
Issuances	0	0
Settlements	0	0
Closing balance	3,178	12,751	3,178	12,751
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	2,608	4,912
Net Derivative Instruments Level 3 Roll Forward:
Transfers into Level 3	0	0
Transfers out of Level 3 (1)	2,124	2,508
Municipal securities
Assets Level 3 Roll Forward:
Opening balance	2,867,652	2,281,743	2,798,044	2,095,551
Transfers into Level 3			0	0
Transfers out of Level 3 (1)			0	0
Total gains/losses for the period:
Included in earnings	(1,180)	0	(2,975)	0
Included in OCI	12,419	7,486	32,894	19,326
Purchases	114,944	46,457	247,609	283,907
Sales	0	(36,657)	0	(36,657)
Repayments	0	0	0	0
Issuances	0	0	0	0
Settlements	(121,828)	(61,054)	(203,565)	(124,152)
Closing balance	2,872,007	2,237,975	2,872,007	2,237,975
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	12,419	0	32,894	0
Net Derivative Instruments Level 3 Roll Forward:
Transfers into Level 3	0	0
Transfers out of Level 3 (1)	0	0
Asset-backed Securities
Assets Level 3 Roll Forward:
Opening balance	59,492	94,329	76,003	100,337
Transfers into Level 3			0	0
Transfers out of Level 3 (1)			0	0
Total gains/losses for the period:
Included in earnings	(3,557)	2	(3,528)	2
Included in OCI	5,598	5,842	8,769	674
Purchases	0	0	0	0
Sales	(18,594)	(27,794)	(37,728)	(27,794)
Repayments	0	0	0	0
Issuances	0	0	0	0
Settlements	(364)	(1,000)	(941)	(1,840)
Closing balance	42,575	71,379	42,575	71,379
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	5,598	2	8,769	2
Net Derivative Instruments Level 3 Roll Forward:
Transfers into Level 3	0	0
Transfers out of Level 3 (1)	0	0
Automobile
Assets Level 3 Roll Forward:
Opening balance	44,219	1,216	47,880	1,748
Transfers into Level 3			0	0
Transfers out of Level 3 (1)			0	0
Total gains/losses for the period:
Included in earnings	1,493	0	1,430	0
Included in OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Repayments	(1,857)	(291)	(5,455)	(823)
Issuances	0	0	0	0
Settlements	0	0	0	0
Closing balance	43,855	925	43,855	925
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at end of the reporting date	0	0	$ 0	$ 0
Net Derivative Instruments Level 3 Roll Forward:
Transfers into Level 3	0	0
Transfers out of Level 3 (1)	$ 0	$ 0

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FAIR VALUES OF ASSETS AND LIABILITIES - Level 3 Classification of Gains/Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net derivative asset (liability), gain (loss) included in earnings			$ 7,758	$ 10,118
Mortgage banking income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net derivative asset (liability), gain (loss) included in earnings			7,758	10,118
Securities gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net derivative asset (liability), gain (loss) included in earnings			0	0
Interest and fee income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net derivative asset (liability), gain (loss) included in earnings			0	0
Noninterest income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net derivative asset (liability), gain (loss) included in earnings			0	0
MSRs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage banking income	$ 779	$ 1,714
Securities gains (losses)	0	0
Interest and fee income	0	0
Noninterest income	0	0
Total	(779)	(1,714)
Asset, gain (loss) included in earnings	(779)	(1,714)	(1,219)	(4,480)
MSRs | Mortgage banking income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			(1,219)	(4,480)
MSRs | Securities gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
MSRs | Interest and fee income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
MSRs | Noninterest income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
Derivative instruments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage banking income	(2,608)	(4,912)
Securities gains (losses)	0	0
Interest and fee income	0	0
Noninterest income	0	0
Total	2,608	4,912
Municipal securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage banking income	0	0
Securities gains (losses)	(1,180)	0
Interest and fee income	0	0
Noninterest income	0	0
Total	(1,180)	0
Asset, gain (loss) included in earnings	(1,180)	0	(2,975)	0
Municipal securities | Mortgage banking income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
Municipal securities | Securities gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			(2,975)	0
Municipal securities | Interest and fee income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
Municipal securities | Noninterest income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
Asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage banking income	0	0
Securities gains (losses)	(3,557)	0
Interest and fee income	0	0
Noninterest income	0	2
Total	(3,557)	2
Asset, gain (loss) included in earnings	(3,557)	2	(3,528)	2
Asset-backed Securities | Mortgage banking income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
Asset-backed Securities | Securities gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			(3,528)	0
Asset-backed Securities | Interest and fee income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
Asset-backed Securities | Noninterest income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	2
Automobile
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage banking income	0	0
Securities gains (losses)	0	0
Interest and fee income	0	0
Noninterest income	1,493	0
Total	1,493	0
Asset, gain (loss) included in earnings	$ 1,493	$ 0	1,430	0
Automobile | Mortgage banking income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
Automobile | Securities gains (losses)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
Automobile | Interest and fee income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			0	0
Automobile | Noninterest income
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Asset, gain (loss) included in earnings			$ 1,430	$ 0

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FAIR VALUES OF ASSETS AND LIABILITIES - Fair Value Option (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for investment	$ 103,741	$ 82,319
Loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale, aggregate unpaid principal	628,684	433,760
Difference	25,403	4,464
Loans held for investment
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for investment	103,741	82,319
Loans held for investment, aggregate unpaid principal	113,114	91,998
Difference	(9,373)	(9,679)
90 or more days | Loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale, fair value carrying amount	72	0
Loans held for sale, aggregate unpaid principal	72	0
Difference	0	0
90 or more days | Loans held for investment
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for investment	13,039	8,408
Loans held for investment, aggregate unpaid principal	15,447	11,082
Difference	$ (2,408)	$ (2,674)

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FAIR VALUES OF ASSETS AND LIABILITIES - Fair Value Option-Changs in Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Net gains (losses) from fair value changes	$ 4,551	$ 8,870	$ 13,616	$ 13,519
Consumer loans
Fair Value, Option, Quantitative Disclosures [Line Items]
Net gains (losses) from fair value changes	$ 1,493	$ 0	$ 1,430	$ 0

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FAIR VALUES OF ASSETS AND LIABILITIES - Non-Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 8,536,471	$ 8,309,159
Held-to-maturity securities	8,279,577	7,806,939
Assets measured at fair value on a nonrecurring basis
Net loans and direct financing leases	67,391,314	66,323,583
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	8,673,908	8,387,444
Held-to-maturity securities	8,259,402	7,787,268
Assets measured at fair value on a nonrecurring basis
Net loans and direct financing leases	67,263,687	66,294,639
Level 1 | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	0	0
Held-to-maturity securities	0	0
Assets measured at fair value on a nonrecurring basis
Net loans and direct financing leases	0	0
Level 2 | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	8,278,588	7,980,176
Held-to-maturity securities	8,259,402	7,787,268
Assets measured at fair value on a nonrecurring basis
Net loans and direct financing leases	0	0
Level 3 | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	395,320	407,268
Held-to-maturity securities	0	0
Assets measured at fair value on a nonrecurring basis
Net loans and direct financing leases	67,263,687	66,294,639
Nonrecurring Basis
Assets measured at fair value on a nonrecurring basis
Impaired loans		(53,818)
Nonrecurring Basis | Fair Value
Assets measured at fair value on a nonrecurring basis
MSRs	175,454
Impaired loans	(36,118)
Other real estate owned	(43,816)
Nonrecurring Basis | Total Gains/(Losses)
Assets measured at fair value on a nonrecurring basis
MSRs	(1,006)
Impaired loans	3,123
Other real estate owned	(1,742)
Nonrecurring Basis | Level 1 | Fair Value
Assets measured at fair value on a nonrecurring basis
MSRs	0
Impaired loans	0
Other real estate owned	0
Nonrecurring Basis | Level 2 | Fair Value
Assets measured at fair value on a nonrecurring basis
MSRs	0
Impaired loans	0
Other real estate owned	0
Nonrecurring Basis | Level 3
Assets measured at fair value on a nonrecurring basis
MSRs		$ 171,309
Nonrecurring Basis | Level 3 | Fair Value
Assets measured at fair value on a nonrecurring basis
MSRs	175,454
Impaired loans	(36,118)
Other real estate owned	$ (43,816)

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FAIR VALUES OF ASSETS AND LIABILITIES - Significant Unobservable Level 3 Inputs (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Available-for-sale and other securities	$ 15,388,306		$ 15,562,837
Consumer loans	103,741		82,319
Fair Value, Measurements, Recurring
Fair Value Disclosures [Abstract]
MSRs	12,528		13,747
Available-for-sale and other securities	14,802,835		15,015,133
Fair Value, Measurements, Recurring | Level 3
Fair Value Disclosures [Abstract]
MSRs	12,528		13,747
Gross amounts of recognized assets	9,227		5,747
Gross amounts of recognized liabilities	6,049		7,870
Available-for-sale and other securities	2,914,582		2,874,047
Consumer loans	43,855		47,880
Fair Value, Measurements, Nonrecurring
Fair Value Disclosures [Abstract]
Impaired loans Fair Value Disclosure			53,818
Accrued income and other assets Fair Value Disclosure			50,930
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value Disclosures [Abstract]
MSRs			171,309
Asset-backed Securities | Fair Value, Measurements, Recurring
Fair Value Disclosures [Abstract]
Available-for-sale and other securities	594,799		793,481
Asset-backed Securities | Fair Value, Measurements, Recurring | Level 3
Fair Value Disclosures [Abstract]
Available-for-sale and other securities	42,575		76,003
Municipal securities
Fair Value Disclosures [Abstract]
Available-for-sale and other securities	3,312,500		3,250,057
Municipal securities | Fair Value, Measurements, Recurring
Fair Value Disclosures [Abstract]
Available-for-sale and other securities	3,312,500		3,250,057
Municipal securities | Fair Value, Measurements, Recurring | Level 3
Fair Value Disclosures [Abstract]
Available-for-sale and other securities	$ 2,872,007		$ 2,798,044
Cost Approach Valuation Technique | Maximum | Fair Value, Measurements, Recurring | MSRs | Level 3
Fair Value Disclosures [Abstract]
Constant prepayment rate	31.00%	34.40%
Spread over forward interest rate swap rates	0.1	0.092
Cost Approach Valuation Technique | Maximum | Fair Value, Measurements, Recurring | Private label CMO | Level 3
Fair Value Disclosures [Abstract]
Discount rate	10.30%	10.00%
Cumulative default	38.40%	37.80%
Loss given default	80.00%	80.00%
Cost Approach Valuation Technique | Maximum | Fair Value, Measurements, Recurring | Asset-backed Securities | Level 3
Fair Value Disclosures [Abstract]
Discount rate	12.30%	12.00%
Cumulative prepayment rate	72.00%	73.00%
Cumulative default	100.00%	100.00%
Loss given default	100.00%	100.00%
Cure given deferral	75.00%	75.00%
Cost Approach Valuation Technique | Maximum | Fair Value, Measurements, Recurring | Loans held for investment | Level 3
Fair Value Disclosures [Abstract]
Discount rate	17.60%	16.20%
Cost Approach Valuation Technique | Maximum | Fair Value, Measurements, Nonrecurring | MSRs | Level 3
Fair Value Disclosures [Abstract]
Constant prepayment rate	21.00%	30.40%
Spread over forward interest rate swap rates	0.2	0.2
Cost Approach Valuation Technique | Minimum | Fair Value, Measurements, Recurring | MSRs | Level 3
Fair Value Disclosures [Abstract]
Constant prepayment rate	8.00%	5.63%
Spread over forward interest rate swap rates	0.030	0.030
Cost Approach Valuation Technique | Minimum | Fair Value, Measurements, Recurring | Private label CMO | Level 3
Fair Value Disclosures [Abstract]
Discount rate	0.00%	0.00%
Cumulative default	0.00%	0.30%
Loss given default	5.00%	5.00%
Cost Approach Valuation Technique | Minimum | Fair Value, Measurements, Recurring | Asset-backed Securities | Level 3
Fair Value Disclosures [Abstract]
Discount rate	6.90%	5.00%
Cumulative prepayment rate	0.00%	0.00%
Cumulative default	0.70%	1.10%
Loss given default	85.00%	85.00%
Cure given deferral	0.00%	0.00%
Cost Approach Valuation Technique | Minimum | Fair Value, Measurements, Recurring | Loans held for investment | Level 3
Fair Value Disclosures [Abstract]
Discount rate	7.00%	5.40%
Cost Approach Valuation Technique | Minimum | Fair Value, Measurements, Nonrecurring | MSRs | Level 3
Fair Value Disclosures [Abstract]
Constant prepayment rate	7.00%	5.57%
Spread over forward interest rate swap rates	0.03	0.042
Cost Approach Valuation Technique | Weighted Average | Fair Value, Measurements, Recurring | MSRs | Level 3
Fair Value Disclosures [Abstract]
Constant prepayment rate	11.00%	10.90%
Spread over forward interest rate swap rates	0.088	0.054
Cost Approach Valuation Technique | Weighted Average | Fair Value, Measurements, Recurring | Private label CMO | Level 3
Fair Value Disclosures [Abstract]
Discount rate	3.90%	3.60%
Cumulative default	2.70%	4.00%
Loss given default	23.20%	24.10%
Cost Approach Valuation Technique | Weighted Average | Fair Value, Measurements, Recurring | Asset-backed Securities | Level 3
Fair Value Disclosures [Abstract]
Discount rate	7.00%	6.30%
Cumulative prepayment rate	8.20%	6.50%
Cumulative default	10.20%	11.20%
Loss given default	96.60%	96.30%
Cure given deferral	37.70%	36.20%
Cost Approach Valuation Technique | Weighted Average | Fair Value, Measurements, Recurring | Loans held for investment | Level 3
Fair Value Disclosures [Abstract]
Discount rate	6.60%	5.60%
Cost Approach Valuation Technique | Weighted Average | Fair Value, Measurements, Nonrecurring | MSRs | Level 3
Fair Value Disclosures [Abstract]
Constant prepayment rate	8.00%	7.80%
Spread over forward interest rate swap rates	0.108	0.117
Market Approach Valuation Technique | Maximum | Fair Value, Measurements, Recurring | Derivative Instruments | Level 3
Fair Value Disclosures [Abstract]
Net market price	31.70%	25.40%
Estimated Pull through %	99.00%	99.80%
Market Approach Valuation Technique | Minimum | Fair Value, Measurements, Recurring | Derivative Instruments | Level 3
Fair Value Disclosures [Abstract]
Net market price	(9.20%)	(7.10%)
Estimated Pull through %	9.00%	8.10%
Market Approach Valuation Technique | Weighted Average | Fair Value, Measurements, Recurring | Derivative Instruments | Level 3
Fair Value Disclosures [Abstract]
Net market price	1.80%	1.10%
Estimated Pull through %	78.00%	7.70%

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FAIR VALUES OF ASSETS AND LIABILITIES - Balance Sheet Location (Details) - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
Financial Assets:
Trading account securities		$ 94,767	$ 133,295
Loans held for sale	[1]	748,077	512,951
Available-for-sale and other securities		15,388,306	15,562,837
Held-to-maturity securities, Total		8,279,577	7,806,939
Net loans and direct financing leases		67,391,314	66,323,583
Financial Liabilities:
Deposits		75,933,373	75,607,717
Short-term borrowings		4,552,877	3,692,654
Long-term borrowings		8,536,471	8,309,159
Reported Value Measurement
Financial Assets:
Cash and short-term assets		1,592,624	1,443,037
Trading account securities		94,767	133,295
Loans held for sale		748,077	512,951
Available-for-sale and other securities		15,388,306	15,562,837
Held-to-maturity securities, Total		8,279,577	7,806,939
Net loans and direct financing leases		67,391,314	66,323,583
Derivatives		190,012	238,219
Financial Liabilities:
Deposits		75,933,373	75,607,717
Short-term borrowings		4,552,877	3,692,654
Long-term borrowings		8,536,471	8,309,159
Derivatives		78,358	98,286
Fair Value
Financial Assets:
Cash and short-term assets		1,592,624	1,443,037
Trading account securities		94,767	133,295
Loans held for sale		752,800	515,640
Available-for-sale and other securities		15,388,306	15,562,837
Held-to-maturity securities, Total		8,259,402	7,787,268
Net loans and direct financing leases		67,263,687	66,294,639
Derivatives		190,012	238,219
Financial Liabilities:
Deposits		77,382,067	76,161,091
Short-term borrowings		4,552,877	3,692,654
Long-term borrowings		8,673,908	8,387,444
Derivatives		78,358	98,286
Fair Value | Level 1
Financial Assets:
Held-to-maturity securities, Total		0	0
Net loans and direct financing leases		0	0
Financial Liabilities:
Deposits		0	0
Short-term borrowings		4,580	474
Long-term borrowings		0	0
Fair Value | Level 2
Financial Assets:
Held-to-maturity securities, Total		8,259,402	7,787,268
Net loans and direct financing leases		0	0
Financial Liabilities:
Deposits		73,621,776	72,319,328
Short-term borrowings		0	0
Long-term borrowings		8,278,588	7,980,176
Fair Value | Level 3
Financial Assets:
Held-to-maturity securities, Total		0	0
Net loans and direct financing leases		67,263,687	66,294,639
Financial Liabilities:
Deposits		3,760,291	3,841,763
Short-term borrowings		4,548,297	3,692,180
Long-term borrowings		$ 395,320	$ 407,268

[1] Amounts represent loans for which Huntington has elected the fair value option.

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DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) group	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Derivative [Line Items]
Increase (decrease) to net interest income due to derivative adjustment	$ 6,000,000	$ 19,000,000	$ 16,000,000	$ 40,000,000
Gain (loss) to be reclassified during next 12 months, net	(2,000,000)		(2,000,000)
Purchase of interest rate caps and derivative financial instruments, notional value	9,600,000,000		9,600,000,000
Total notional amount corresponds to trading assets, fair value	1,000,000		1,000,000
Notional amount corresponds to trading liabilities, fair value (less than)	2,000,000		2,000,000
Credit risks from interest rate swaps used for trading purposes	156,000,000		$ 156,000,000		$ 196,000,000
Number of primary groups | group			2
Aggregate credit risk, net of collateral	44,000,000		$ 44,000,000		26,000,000
Investment securities and cash collateral pledged by Huntington	120,000,000		120,000,000
Investment securities and cash collateral pledged to Huntington	53,000,000		53,000,000
Swap
Derivative [Line Items]
Derivative Liability	6,000,000		6,000,000
Derivative used in trading activity
Derivative [Line Items]
Net derivative asset (liability)	80,000,000		80,000,000		80,000,000
Derivative financial instruments used by Huntington on behalf of customers including offsetting derivatives, notional value	21,000,000,000		21,000,000,000		21,000,000,000
Derivative used in Mortgage Banking Activities
Derivative [Line Items]
Purchase of interest rate caps and derivative financial instruments, notional value	228,000,000		228,000,000		300,000,000
Gains (losses) related to derivative instruments Included in total MSR	2,000,000	$ 6,000,000	1,000,000	$ 18,000,000
Share Swap Economic Hedge
Derivative [Line Items]
Purchase of interest rate caps and derivative financial instruments, notional value	28,000,000		28,000,000		$ 20,000,000
Derivative, Fair Value, Net	11,000,000		11,000,000
Deposits
Derivative [Line Items]
Purchase of interest rate caps and derivative financial instruments, notional value	0		0
Fair Value Hedging
Derivative [Line Items]
Purchase of interest rate caps and derivative financial instruments, notional value	7,675,000,000		7,675,000,000
Fair Value Hedging | Deposits
Derivative [Line Items]
Purchase of interest rate caps and derivative financial instruments, notional value	0		0
Cash Flow Hedging
Derivative [Line Items]
Purchase of interest rate caps and derivative financial instruments, notional value	1,925,000,000		1,925,000,000
Cash Flow Hedging | Deposits
Derivative [Line Items]
Purchase of interest rate caps and derivative financial instruments, notional value	$ 0		$ 0

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DERIVATIVE FINANCIAL INSTRUMENTS - Hedging Instruments (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 9,600,000,000
Accrued income and other assets
Asset derivatives included in accrued income and other assets
Interest rate contracts designated as hedging instruments	40,416,000	$ 46,440,000
Interest rate contracts not designated as hedging instruments	192,000,000	213,587,000
Foreign exchange contracts not designated as hedging instruments	27,655,000	23,265,000
Commodities contracts not designated as hedging instruments	53,295,000	108,026,000
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	10,728,000	9,775,000
Total contracts	324,094,000	401,093,000
Accrued expenses and other liabilities
Liability derivatives included in accrued expenses and other liabilities
Interest rate contracts designated as hedging instruments	90,326,000	99,996,000
Interest rate contracts not designated as hedging instruments	114,889,000	143,976,000
Foreign exchange contracts not designated as hedging instruments	27,883,000	19,576,000
Commodities contracts not designated as hedging instruments	49,520,000	104,328,000
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	5,694,000	0
Total contracts	288,312,000	367,876,000
Share Swap Economic Hedge [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 28,000,000	$ 20,000,000

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DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Management (Details)	Jun. 30, 2017 USD ($)
Notional Disclosures [Abstract]
Derivative, Notional Amount	$ 9,600,000,000
Fair Value Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	7,675,000,000
Cash Flow Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	1,925,000,000
Loan
Notional Disclosures [Abstract]
Derivative, Notional Amount	1,925,000,000
Loan | Fair Value Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	0
Loan | Cash Flow Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	1,925,000,000
Deposits
Notional Disclosures [Abstract]
Derivative, Notional Amount	0
Deposits | Fair Value Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	0
Deposits | Cash Flow Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	0
Subordinated notes
Notional Disclosures [Abstract]
Derivative, Notional Amount	950,000,000
Subordinated notes | Fair Value Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	950,000,000
Subordinated notes | Cash Flow Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	0
Other long-term debt
Notional Disclosures [Abstract]
Derivative, Notional Amount	6,725,000,000
Other long-term debt | Fair Value Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	6,725,000,000
Other long-term debt | Cash Flow Hedging
Notional Disclosures [Abstract]
Derivative, Notional Amount	$ 0

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DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Managemen Add Info (Details Add Info) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Additional information about the interest rate swaps used in companies Asset and Liability Management
Notional Value	$ 9,600,000
Average Maturity (years)	2 years 4 months
Fair Value	$ (49,910)
Weighted-Average Rate Receive	1.44%
Weighted-Average Rate Pay	1.24%
Asset conversion swaps - Receive Fixed - Generic
Additional information about the interest rate swaps used in companies Asset and Liability Management
Notional Value	$ 1,925,000
Average Maturity (years)	3 months 18 days
Fair Value	$ (3,420)
Weighted-Average Rate Receive	1.07%
Weighted-Average Rate Pay	1.44%
Liability conversion swaps - Receive Fixed - Generic
Additional information about the interest rate swaps used in companies Asset and Liability Management
Notional Value	$ 7,675,000
Average Maturity (years)	2 years 10 months
Fair Value	$ (46,490)
Weighted-Average Rate Receive	1.54%
Weighted-Average Rate Pay	1.19%

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DERIVATIVE FINANCIAL INSTRUMENTS - Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Cash Flow Hedging
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	$ 793	$ 1,293	$ (397)	$ 10,542
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	427	(248)	(987)	892
Deposits | Interest expense deposits
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	0	0	(76)	(82)
Hedged Deposits | Interest expense deposits
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	0	0	0	72
Subordinated notes | Interest expense subordinated notes and other long term debt
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	2,277	4	(2,431)	6,809
Hedged Subordinated notes | Interest expense subordinated notes and other long term debt
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	(2,235)	(4)	3,168	(6,809)
Other long-term debt | Interest expense subordinated notes and other long term debt
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	15,832	22,017	5,551	83,049
Hedged Other long term debt | Interest expense subordinated notes and other long term debt
Increase or (decrease) to interest expense for derivatives designated as fair value hedges
Increase or (decrease) to interest expense for derivatives designated as fair value hedges	(16,913)	(21,047)	(8,378)	(80,834)
Loan | Interest and fee income loans and leases | Cash Flow Hedging
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	793	1,293	(397)	10,542
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	427	(248)	(987)	893
Securities Investment | Interest and fee income investment securities | Cash Flow Hedging
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges
Amount of gain or (loss) recognized in OCI on derivatives (effective portion)	0	0	0	0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion)	$ 0	$ 0	$ 0	$ (1)

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DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value Hedges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Loan
Derivative Instruments, Gain (Loss) [Line Items]
Gains and (losses) recognized in noninterest income on the ineffective portion on interest rate contracts for derivatives designated as cash flow hedges	$ (31)	$ 421	$ (134)	$ 377

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DERIVATIVE FINANCIAL INSTRUMENTS - Mortgage Banking Activities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Interest rate lock agreements
Derivative assets:
Total derivative assets	$ 9,227		$ 9,227		$ 5,747
Derivative liabilities:
Total derivative liabilities	355		355		1,598
Forward trades and options
Derivative assets:
Total derivative assets	1,642		1,642		13,319
Derivative liabilities:
Total derivative liabilities	2,178		2,178		1,173
Derivative used in Mortgage Banking Activities
Derivatives, Fair Value [Line Items]
Gains losses related to derivative instruments Included in Mortgage securities	2,000	$ 6,000	1,000	$ 18,000
Derivative assets:
Total derivative assets	10,869		10,869		19,066
Derivative liabilities:
Total derivative liabilities	$ 2,533		$ 2,533		$ 2,771

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DERIVATIVE FINANCIAL INSTRUMENTS - Offsetting Assets (Details) - Derivative Contract - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Offsetting Derivative Assets [Abstract]
Gross amounts of recognized assets	$ 334,963	$ 420,159
Gross amounts offset in the condensed consolidated balance sheets	144,951	181,940
Net amounts of assets presented in the condensed consolidated balance sheets	190,012	238,219
Gross amounts not offset in the condensed consolidated balance sheets, Financial instruments	(5,009)	(34,328)
Gross amounts not offset in the condensed consolidated balance sheets, cash collateral received	(18,448)	(5,428)
Net amount	$ 166,555	$ 198,463

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DERIVATIVE FINANCIAL INSTRUMENTS - Offsetting Liabilities (Details) - Derivative Contract - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Offsetting Derivative Liabilities [Abstract]
Gross amounts of recognized liabilities	$ 290,845	$ 370,647
Gross amounts offset in the condensed consolidated balance sheets	(212,487)	(272,361)
Derivative liabilities	78,358	98,286
Gross amounts not offset in the condensed consolidated balance sheets, Financial instruments	0	(7,550)
Gross amounts not offset in the condensed consolidated balance sheets, Cash collateral received	(24,348)	(23,943)
Net amount	$ 54,010	$ 66,793

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VIEs - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Jun. 30, 2015
Trust 2016 Unconsolidated [Member]
Variable Interest Entity [Line Items]
Total of automobile loans transferred in securitization transactions	$ 1,500
2015-1 Automobile Trust
Variable Interest Entity [Line Items]
Total of automobile loans transferred in securitization transactions		$ 750

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VIEs - Consolidated (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets
Cash	$ 1,515,476	$ 1,384,770
Net loans and leases	67,391,314	66,323,583
Accrued income and other assets	2,016,488	2,062,976
Total assets	101,406,779	99,714,097
Liabilities
Long-term borrowings	8,536,471	8,309,159
Accrued interest and other liabilities	1,729,876	1,796,421
Total liabilities	90,752,597	89,405,951
Equity
Total liabilities and shareholders’ equity	101,406,779	99,714,097
Trust 2016 Unconsolidated [Member]
Variable Interest Entity [Line Items]
Total Assets	10,464	14,770
Total Liabilities	0	0
Maximum Exposure to Loss	10,464	14,770
Huntington Technology Funding Trust Series 2014A
Assets
Cash	1,566	1,564
Net loans and leases	43,039	69,825
Accrued income and other assets	0	0
Total assets	44,605	71,389
Liabilities
Long-term borrowings	36,040	57,494
Accrued interest and other liabilities	0	0
Total liabilities	36,040	57,494
Equity
Beneficial interest owned by third party	8,565	13,895
Total liabilities and shareholders’ equity	44,605	71,389
Franklin 2009 Trust
Assets
Cash	0	0
Net loans and leases	0	0
Accrued income and other assets	271	281
Total assets	271	281
Liabilities
Long-term borrowings	0	0
Accrued interest and other liabilities	271	281
Total liabilities	271	281
Equity
Beneficial interest owned by third party	0	0
Total liabilities and shareholders’ equity	271	281
Consolidated Trusts
Assets
Cash	1,566	1,564
Net loans and leases	43,039	69,825
Accrued income and other assets	271	281
Total assets	44,876	71,670
Liabilities
Long-term borrowings	36,040	57,494
Accrued interest and other liabilities	271	281
Total liabilities	36,311	57,775
Equity
Beneficial interest owned by third party	8,565	13,895
Total liabilities and shareholders’ equity	$ 44,876	$ 71,670

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VIEs - Unconsolidated VIEs (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Trust 2016 Unconsolidated [Member]
Variable Interest Entity [Line Items]
Total Assets	$ 10,464	$ 14,770
Total Liabilities	0	0
Maximum Exposure to Loss	10,464	14,770
2015-1 Automobile Trust
Variable Interest Entity [Line Items]
Total Assets	2,046	2,227
Total Liabilities	0	0
Maximum Exposure to Loss	2,046	2,227
Trust Preferred Securities
Variable Interest Entity [Line Items]
Total Assets	13,919	13,919
Total Liabilities	252,568	252,552
Maximum Exposure to Loss	0	0
Low Income Housing Tax Credit Partnerships
Variable Interest Entity [Line Items]
Total Assets	615,691	576,880
Total Liabilities	327,793	292,721
Maximum Exposure to Loss	615,691	576,880
Other Investments
Variable Interest Entity [Line Items]
Total Assets	110,318	79,195
Total Liabilities	55,026	42,316
Maximum Exposure to Loss	110,318	79,195
Total
Variable Interest Entity [Line Items]
Total Assets	752,438	686,991
Total Liabilities	635,387	587,589
Maximum Exposure to Loss	$ 738,519	$ 673,072

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VIEs - Trust preferred Securities (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2017 USD ($)
Summary of Outstanding Trust Preferred Securities
Principal amount of subordinated note/ debenture issued to trust	$ 252,568
Investment in unconsolidated subsidiary	$ 13,919
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]
Maximum year to defer payment of interest on Debenture	5 years
Huntington Capital I
Summary of Outstanding Trust Preferred Securities
Interest rate on Trust Preferred Securities	1.87%
Principal amount of subordinated note/ debenture issued to trust	$ 69,730
Investment in unconsolidated subsidiary	$ 6,186
Huntington Capital I | Three-Month LIBOR
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]
Rate spread over three month LIBOR	0.70%
Huntington Capital II
Summary of Outstanding Trust Preferred Securities
Interest rate on Trust Preferred Securities	1.87%
Principal amount of subordinated note/ debenture issued to trust	$ 32,093
Investment in unconsolidated subsidiary	$ 3,093
Huntington Capital II | Three-Month LIBOR
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]
Rate spread over three month LIBOR	0.625%
Sky Financial Capital Trust III
Summary of Outstanding Trust Preferred Securities
Interest rate on Trust Preferred Securities	2.70%
Principal amount of subordinated note/ debenture issued to trust	$ 72,165
Investment in unconsolidated subsidiary	$ 2,165
Sky Financial Capital Trust III | Three-Month LIBOR
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]
Rate spread over three month LIBOR	1.40%
Sky Financial Capital Trust IV
Summary of Outstanding Trust Preferred Securities
Interest rate on Trust Preferred Securities	2.55%
Principal amount of subordinated note/ debenture issued to trust	$ 74,320
Investment in unconsolidated subsidiary	$ 2,320
Camco Financial Trust
Summary of Outstanding Trust Preferred Securities
Interest rate on Trust Preferred Securities	3.69%
Principal amount of subordinated note/ debenture issued to trust	$ 4,260
Investment in unconsolidated subsidiary	$ 155
Camco Financial Trust | Three-Month LIBOR
Summary of Outstanding Trust Preferred Securities (Textuals) [Abstract]
Rate spread over three month LIBOR	1.33%

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VIEs - Low Income Housing Tax Credit Partnership (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Low Income Housing Tax Credit Partnerships
Variable Interest Entity [Line Items]
Affordable housing tax credit investments	$ 942,769		$ 942,769		$ 877,237
Less: amortization	(327,078)		(327,078)		(300,357)
Net affordable housing tax credit investments	615,691		615,691		576,880
Unfunded commitments	327,793		327,793		$ 292,721
Tax credits and other tax benefits recognized	22,671	$ 18,150	45,955	$ 36,434
Proportional Amortization Method
Variable Interest Entity [Line Items]
Tax credit amortization expense included in provision for income taxes	17,220	12,499	34,182	24,905
Equity Method
Variable Interest Entity [Line Items]
Tax credit investment (gains) losses included in non-interest income	$ 0	$ 132	$ 109	$ 264

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COMMITMENTS AND CONTINGENT LIABILITIES - Commitments to Extend Credit (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Commercial
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract amount represents credit risk	$ 15,684,661	$ 15,190,056
Consumer
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract amount represents credit risk	12,727,316	12,235,943
Commercial Real Estate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract amount represents credit risk	1,474,831	1,697,671
Standby Letters of Credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract amount represents credit risk	559,903	637,182
Commercial letters-of-credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract amount represents credit risk	$ 11,952	$ 4,610

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COMMITMENTS AND CONTINGENT LIABILITIES - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Sep. 30, 2015	Jun. 30, 2017	Dec. 31, 2016	Sep. 28, 2015
Loss Contingencies [Line Items]
Maturity period of majority of standby letters of credit			P2Y
Maturity period of Commercial letters of credit			P90D
Maturity period of forward contracts relating mortgage banking business			1 year
Cyberco Litigation
Loss Contingencies [Line Items]
Bankruptcy Court recommended judgment amount in Cyberco case, principal					$ 72,000,000
Loss contingency period increase (decrease)	$ (42,000,000)	$ 38,000,000
Standby Letters of Credit
Loss Contingencies [Line Items]
Carrying amount of deferred revenue associated with guarantees	8,000,000		$ 8,000,000	$ 8,000,000
Outstanding standby letters of credit	559,903,000		559,903,000	637,182,000
Commercial letters-of-credit
Loss Contingencies [Line Items]
Outstanding standby letters of credit	11,952,000		11,952,000	4,610,000
Commitments to Sell Loans
Loss Contingencies [Line Items]
Commitments to sell residential real estate loans	1,100,000,000		1,100,000,000	$ 819,000,000
Maximum
Loss Contingencies [Line Items]
Aggregate range of reasonably possible losses current legal proceedings	70,000,000		70,000,000
Minimum
Loss Contingencies [Line Items]
Aggregate range of reasonably possible losses current legal proceedings	0		$ 0
Cash [Member] | FirstMerit Overdraft Litigation [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount	9,000,000
Debt forgiveness [Member] | FirstMerit Overdraft Litigation [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount	7,000,000
Insurance Settlement [Member] | FirstMerit Overdraft Litigation [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount	$ 4,400,000

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SEGMENT REPORTING (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($) reporting_unit	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) segments business	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reporting segments | segments			4
Maximum business banking customer's revenue			$ 20,000
Number of business banking businesses | business			254,000
Net interest income	$ 744,512	$ 505,881	$ 1,474,487	$ 1,008,947
Provision (reduction in allowance) for credit losses	(24,978)	(24,509)	(92,616)	(52,091)
Noninterest income	325,218	271,112	637,681	512,979
Noninterest expense	694,364	523,661	1,401,786	1,014,741
Income taxes	78,647	54,283	137,931	109,240
Net income	271,741	174,540	479,835	345,854
Assets	101,406,779		101,406,779		$ 99,714,097
Deposits	75,933,373		75,933,373		75,607,717
Operating Segments | Consumer & Business Banking
Segment Reporting Information [Line Items]
Net interest income	420,210	284,896	828,936	562,423
Provision (reduction in allowance) for credit losses	(17,000)	(20,848)	(50,181)	(30,750)
Noninterest income	184,199	152,242	354,970	284,002
Noninterest expense	412,400	310,924	824,048	616,981
Income taxes	61,253	36,879	108,387	69,543
Net income	113,756	68,487	201,290	129,151
Assets	25,820,232		25,820,232		25,332,635
Deposits	$ 45,971,574		45,971,574		45,355,745
Operating Segments | Commercial Banking
Segment Reporting Information [Line Items]
Number of reporting units | reporting_unit	6
Net interest income	$ 168,814	106,971	343,285	212,240
Provision (reduction in allowance) for credit losses	10,339	5,630	(11,798)	(29,423)
Noninterest income	59,926	51,158	117,573	95,484
Noninterest expense	101,184	80,842	201,382	159,050
Income taxes	48,263	29,021	86,687	41,738
Net income	89,632	53,896	160,991	77,513
Assets	24,021,962		24,021,962		24,121,689
Deposits	17,867,356		17,867,356		18,053,208
Operating Segments | CREVF
Segment Reporting Information [Line Items]
Net interest income	140,367	95,617	279,700	191,214
Provision (reduction in allowance) for credit losses	(20,793)	(9,740)	(30,342)	6,909
Noninterest income	12,559	10,640	23,768	17,950
Noninterest expense	55,946	41,185	108,635	80,922
Income taxes	26,665	19,366	57,572	47,303
Net income	49,522	35,966	106,919	87,848
Assets	24,431,788		24,431,788		23,576,832
Deposits	1,943,670		1,943,670		1,893,072
Operating Segments | RBPCG
Segment Reporting Information [Line Items]
Net interest income	48,749	35,499	95,492	70,503
Provision (reduction in allowance) for credit losses	2,477	448	(295)	1,173
Noninterest income	46,385	40,097	94,395	79,403
Noninterest expense	60,885	53,757	123,934	109,172
Income taxes	12,854	7,801	22,980	14,667
Net income	23,872	14,486	42,678	27,240
Assets	5,570,436		5,570,436		5,327,622
Deposits	5,882,745		5,882,745		6,214,250
Treasury / Other
Segment Reporting Information [Line Items]
Net interest income	(33,628)	(17,102)	(72,926)	(27,433)
Provision (reduction in allowance) for credit losses	(1)	1	0	0
Noninterest income	22,149	16,975	46,975	36,140
Noninterest expense	63,949	36,953	143,787	48,616
Income taxes	(70,388)	(38,784)	(137,695)	(64,011)
Net income	(5,041)	$ 1,705	(32,043)	$ 24,102
Assets	21,562,361		21,562,361		21,355,319
Deposits	$ 4,268,028		$ 4,268,028		$ 4,091,442