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

For the quarterly period ending September 30, 2018

Commission File Number: 001-31486

_______________________________________________________________________________

WEBSTER FINANCIAL CORPORATION

(Exact name of registrant as specified in its charter)

 _______________________________________________________________________________

Delaware	06-1187536
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

145 Bank Street, Waterbury, Connecticut 06702

(Address and zip code of principal executive offices)

(203) 578-2202

(Registrant's telephone number, including area code)

______________________________________________________________________________

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 (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    ☑  Yes    ☐  No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). ☑  Yes    ☐  No

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

Large accelerated filer	☑	Accelerated filer	☐	Non-accelerated filer	☐	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 transaction period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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

The number of shares of common stock, par value $.01 per share, outstanding as of October 31, 2018 was 92,236,627.

INDEX

		Page No.
Forward-Looking Statements		ii
Key to Acronyms and Terms		iii
PART I – FINANCIAL INFORMATION
Item 1.	Financial Statements	1
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	43
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	73
Item 4.	Controls and Procedures	73
PART II – OTHER INFORMATION
Item 1.	Legal Proceedings	74
Item 1A.	Risk Factors	74
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	74
Item 3.	Defaults Upon Senior Securities	75
Item 4.	Mine Safety Disclosures	75
Item 5.	Other Information	75
Item 6.	Exhibits	75
EXHIBIT INDEX		75
SIGNATURES		76

i

WEBSTER FINANCIAL CORPORATION AND SUBSIDIARIES

FOWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements can be identified by words such as "believes," "anticipates," "expects," "intends," "targeted," "continue," "remain," "will," "should," "may," "plans," "estimates" and similar references to future periods; however, such words are not the exclusive means of identifying such statements. References to the "Company," " Webster," "we," "our," or "us" mean Webster Financial Corporation and its consolidated subsidiaries.

Examples of forward-looking statements include, but are not limited to:

▪ projections of revenues, expenses, income or loss, earnings or loss per share, and other financial items;

▪ statements of plans, objectives and expectations of Webster or its management or Board of Directors;

▪ statements of future economic performance; and

▪ statements of assumptions underlying such statements.

Forward-looking statements are based on Webster’s current expectations and assumptions regarding its business, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. Webster’s actual results may differ materially from those contemplated by the forward-looking statements, which are neither statements of historical fact nor guarantees or assurances of future performance.

Factors that could cause actual results to differ from those discussed in the forward-looking statements include, but are not limited to:

▪ local, regional, national and international economic conditions and the impact they may have on us and our customers;

▪ volatility and disruption in national and international financial markets;

▪ government intervention in the U.S. financial system;

▪ changes in the level of non-performing assets and charge-offs;

▪ changes in estimates of future reserve requirements based upon periodic review under relevant regulatory and accounting requirements;

▪ adverse conditions in the securities markets that lead to impairment in the value of securities in our investment portfolio;

▪ inflation, interest rate, securities market and monetary fluctuations;

▪ the timely development and acceptance of new products and services and perceived overall value of these products and services by customers;

▪ changes in consumer spending, borrowings and savings habits;

▪ technological changes and cyber-security matters;

▪ the ability to increase market share and control expenses;

▪ changes in the competitive environment among banks, financial holding companies and other financial services providers;

▪ the effect of changes in laws and regulations (including laws and regulations concerning taxes, banking, securities, insurance and healthcare) with which we and our subsidiaries must comply, including the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (Dodd-Frank Act), the final rules establishing a new comprehensive capital framework for U.S. banking organizations, and the Tax Cuts and Jobs Act of 2017 (Tax Act);

▪ the effect of changes in accounting policies and practices, as may be adopted by the regulatory agencies, as well as the Public Company Accounting Oversight Board, the Financial Accounting Standards Board (FASB) and other accounting standard setters;

▪ the costs and effects of legal and regulatory developments including the resolution of legal proceedings or regulatory or other governmental inquiries and the results of regulatory examinations or reviews; and

▪ our success at assessing and managing the risks involved in the foregoing items.

Any forward-looking statements made by the Company in this Quarterly Report on Form 10-Q speaks only as of the date they are made. Factors or events that could cause the Company’s actual results to differ may emerge from time to time, and it is not possible for the Company to predict all of them. The Company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by law.

ii

WEBSTER FINANCIAL CORPORATION AND SUBSIDIARIES

KEY TO ACRONYMS AND TERMS

Agency CMBS	Agency commercial mortgage-backed securities
Agency CMO	Agency collateralized mortgage obligations
Agency MBS	Agency mortgage-backed securities
ALCO	Asset/Liability Committee
ALLL	Allowance for loan and lease losses
AOCL	Accumulated other comprehensive loss, net of tax
ASC	Accounting Standards Codification
ASU or the Update	Accounting Standards Update
Basel III	Capital rules under a global regulatory framework developed by the Basel Committee on Banking Supervision
CET1 capital	Common Equity Tier 1 Capital, defined by Basel III capital rules
CLO	Collateralized loan obligation securities
CMBS	Non-agency commercial mortgage-backed securities
CME	Chicago Mercantile Exchange
Dodd-Frank Act	Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010
EGRRCPA	Economic Growth, Regulatory Relief, and Consumer Protection Act
FASB	Financial Accounting Standards Board
FDIC	Federal Deposit Insurance Corporation
FHLB	Federal Home Loan Bank
FICO	Fair Isaac Corporation
FRB	Federal Reserve Bank
FTP	Funds Transfer Pricing, a matched maturity funding concept
GAAP	U.S. Generally Accepted Accounting Principles
Holding Company	Webster Financial Corporation
HSA Bank	A division of Webster Bank, National Association
LEP	Loss emergence period
LGD	Loss given default
LPL	LPL Financial Holdings Inc.
NAV	Net asset value
NII	Net interest income
OCC	Office of the Comptroller of the Currency
OCI/OCL	Other comprehensive income (loss)
OREO	Other real estate owned
OTTI	Other-than-temporary impairment
PD	Probability of default
PPNR	Pre-tax, pre-provision net revenue
RPA	Risk participation agreement
SEC	United States Securities and Exchange Commission
SERP	Supplemental defined benefit retirement plan
Tax Act	Tax Cuts and Jobs Act of 2017
TDR	Troubled debt restructuring, defined in ASC 310-40 "Receivables-Troubled Debt Restructurings by Creditors"
VIE	Variable interest entity, defined in ASC 810-10 "Consolidation-Overall"
Webster Bank	Webster Bank, National Association, a wholly-owned subsidiary of Webster Financial Corporation
Webster or the Company	Webster Financial Corporation, collectively with its consolidated subsidiaries

iii

PART I. – FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

WEBSTER FINANCIAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

	September 30, 2018			December 31, 2017
(In thousands, except share data)	(Unaudited)
Assets:
Cash and due from banks	$	222,234		$	231,158
Interest-bearing deposits	99,746			25,628
Investment securities available-for-sale, at fair value	2,823,953			2,638,037
Investment securities held-to-maturity (fair value of $4,164,359 and $4,456,350)	4,332,458			4,487,392
Federal Home Loan Bank and Federal Reserve Bank stock	133,740			151,566
Loans held for sale, fair value option	17,137			20,888
Loans and leases	18,321,019			17,523,858
Allowance for loan and lease losses	(211,832		)	(199,994		)
Loans and leases, net	18,109,187			17,323,864
Deferred tax assets, net	92,910			92,630
Premises and equipment, net	128,507			130,001
Goodwill	538,373			538,373
Other intangible assets, net	26,726			29,611
Cash surrender value of life insurance policies	539,923			531,820
Accrued interest receivable and other assets	281,423			286,677
Total assets	$	27,346,317		$	26,487,645
Liabilities and shareholders' equity:
Deposits:
Non-interest-bearing	$	4,231,505		$	4,191,496
Interest-bearing	17,766,118			16,802,233
Total deposits	21,997,623			20,993,729
Securities sold under agreements to repurchase and other borrowings	564,488			643,269
Federal Home Loan Bank advances	1,441,884			1,677,105
Long-term debt	225,957			225,767
Accrued expenses and other liabilities	300,167			245,817
Total liabilities	24,530,119			23,785,687
Shareholders’ equity:
Preferred stock, $.01 par value; Authorized - 3,000,000 shares:
Series F issued and outstanding (6,000 shares)	145,037			145,056
Common stock, $.01 par value; Authorized - 200,000,000 shares:
Issued (93,680,724 and 93,680,291 shares)	937			937
Paid-in capital	1,114,848			1,122,164
Retained earnings	1,761,036			1,595,762
Treasury stock, at cost (1,536,554 and 1,658,526 shares)	(74,096		)	(70,430		)
Accumulated other comprehensive loss, net of tax	(131,564		)	(91,531		)
Total shareholders' equity	2,816,198			2,701,958
Total liabilities and shareholders' equity	$	27,346,317		$	26,487,645

See accompanying Notes to Condensed Consolidated Financial Statements.

1

WEBSTER FINANCIAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited)

	Three months ended September 30,						Nine months ended September 30,
(In thousands, except per share data)	2018			2017			2018			2017
Interest Income:
Interest and fees on loans and leases	$	215,448		$	181,130		$	616,488		$	523,394
Taxable interest and dividends on investments	47,646			43,819			142,361			136,167
Non-taxable interest on investment securities	5,061			5,765			15,428			17,103
Loans held for sale	208			307			498			826
Total interest income	268,363			231,021			774,775			677,490
Interest Expense:
Deposits	24,397			16,760			62,778			44,874
Securities sold under agreements to repurchase and other borrowings	3,084			3,847			10,722			10,970
Federal Home Loan Bank advances	7,685			6,894			23,437			22,543
Long-term debt	2,825			2,616			8,288			7,748
Total interest expense	37,991			30,117			105,225			86,135
Net interest income	230,372			200,904			669,550			591,355
Provision for loan and lease losses	10,500			10,150			32,000			27,900
Net interest income after provision for loan and lease losses	219,872			190,754			637,550			563,455
Non-interest Income:
Deposit service fees	40,601			38,321			121,911			113,519
Loan and lease related fees	10,782			6,346			24,111			19,898
Wealth and investment services	8,412			7,750			24,738			22,900
Mortgage banking activities	1,305			2,421			3,684			8,038
Increase in cash surrender value of life insurance policies	3,706			3,720			10,921			10,943
Impairment loss on investment securities recognized in earnings	—			—			—			(126		)
Other income	7,478			7,288			24,040			18,267
Total non-interest income	72,284			65,846			209,405			193,439
Non-interest Expense:
Compensation and benefits	96,640			88,395			284,457			262,288
Occupancy	14,502			14,744			45,489			46,957
Technology and equipment	24,553			22,580			73,019			66,646
Intangible assets amortization	961			1,002			2,885			3,085
Marketing	4,052			4,045			12,493			14,101
Professional and outside services	4,930			4,030			14,099			11,813
Deposit insurance	9,694			6,344			30,098			19,701
Other expense	23,451			20,683			68,317			65,435
Total non-interest expense	178,783			161,823			530,857			490,026
Income before income tax expense	113,373			94,777			316,098			266,868
Income tax expense	13,700			30,281			54,518			81,322
Net income	99,673			64,496			261,580			185,546
Preferred stock dividends and other	(2,213		)	(2,070		)	(6,540		)	(6,284		)
Earnings applicable to common shareholders	$	97,460		$	62,426		$	255,040		$	179,262
Earnings per common share:
Basic	$	1.06		$	0.68		$	2.77		$	1.95
Diluted	1.06			0.67			2.77			1.94

See accompanying Notes to Condensed Consolidated Financial Statements.

2

WEBSTER FINANCIAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

	Three months ended September 30,					Nine months ended September 30,
(In thousands)	2018			2017		2018			2017
Net income	$	99,673		$	64,496	$	261,580		$	185,546
Other comprehensive (loss) income (OCL) OCI, net of tax:
Total securities available-for-sale	(13,811		)	872		(50,481		)	1,847
Total derivative instruments	1,635			1,111		5,837			2,921
Total defined benefit pension and other postretirement benefit plans	2,548			1,001		4,611			3,127
Other comprehensive (loss) income, net of tax	(9,628		)	2,984		(40,033		)	7,895
Comprehensive income	$	90,045		$	67,480	$	221,547		$	193,441

See accompanying Notes to Condensed Consolidated Financial Statements.

3

WEBSTER FINANCIAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (Unaudited)

(In thousands, except per share data)	Preferred Stock			Common Stock		Paid-In Capital			Retained Earnings			Treasury Stock, at cost			Accumulated Other Comprehensive Loss, Net of Tax			Total Shareholders' Equity
Balance at December 31, 2017	$	145,056		$	937	$	1,122,164		$	1,595,762		$	(70,430	)	$	(91,531	)	$	2,701,958
Cumulative effect of changes in accounting principles	—			—		—			(1,362		)	—			—			(1,362		)
Net income	—			—		—			261,580			—			—			261,580
Other comprehensive loss, net of tax	—			—		—			—			—			(40,033		)	(40,033		)
Common stock dividends/equivalents $0.92 per share	—			—		99			(85,002		)	—			—			(84,903		)
Series F preferred stock dividends $995.3125 per share	—			—		—			(5,906		)	—			—			(5,906		)
Series F preferred stock dividends accrued adjustment	—			—		—			22			—			—			22
Stock-based compensation	—			—		(1,541		)	2,426			7,713			—			8,598
Exercise of stock options	—			—		(5,308		)	—			7,418			—			2,110
Stock units conversion to shares	—			—		(566		)	(6,484		)	7,050			—			—
Common shares acquired from stock compensation plan activity	—			—		—			—			(13,689		)	—			(13,689		)
Common stock repurchase program	—			—		—			—			(12,158		)	—			(12,158		)
Series F preferred stock issuance adjustment	(19		)	—		—			—			—			—			(19		)
Balance at September 30, 2018	$	145,037		$	937	$	1,114,848		$	1,761,036		$	(74,096	)	$	(131,564	)	$	2,816,198
(In thousands, except per share data)	Preferred Stock			Common Stock		Paid-In Capital			Retained Earnings			Treasury Stock, at cost			Accumulated Other Comprehensive Loss, Net of Tax			Total Shareholders' Equity
Balance at December 31, 2016	$	122,710		$	937	$	1,125,937		$	1,425,320		$	(70,899	)	$	(76,993	)	$	2,527,012
Net income	—			—		—			185,546			—			—			185,546
Other comprehensive income, net of tax	—			—		—			—			—			7,895			7,895
Common stock dividends/equivalents $0.77 per share	—			—		124			(71,096		)	—			—			(70,972		)
Series E preferred stock dividends $1,200.00 per share	—			—		—			(6,072		)	—			—			(6,072		)
Stock-based compensation	—			—		—			1,887			9,070			—			10,957
Exercise of stock options	—			—		(2,376		)	—			7,677			—			5,301
Common shares acquired from stock compensation plan activity	—			—		—			—			(9,295		)	—			(9,295		)
Common stock repurchase program	—			—		—			—			(11,585		)	—			(11,585		)
Balance at September 30, 2017	$	122,710		$	937	$	1,123,685		$	1,535,585		$	(75,032	)	$	(69,098	)	$	2,638,787

See accompanying Notes to Condensed Consolidated Financial Statements.

4

WEBSTER FINANCIAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Nine months ended September 30,
(In thousands)	2018			2017
Operating Activities:
Net income	$	261,580		$	185,546
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	32,000			27,900
Deferred tax expense (benefit)	13,138			(3,241		)
Depreciation and amortization	28,991			28,060
Amortization of premium/discount on earning assets and funding, net	38,905			33,338
Stock-based compensation	8,598			9,050
Gain on sale, net of write-down, on foreclosed and repossessed assets	(745		)	(551		)
Write-down, net on premises and equipment	295			218
Impairment loss on investment securities recognized in earnings	—			126
Increase in cash surrender value of life insurance policies	(10,921		)	(10,943		)
Gain from life insurance policies	(1,453		)	—
Mortgage banking activities	(3,684		)	(8,038		)
Proceeds from sale of loans held for sale	147,105			262,029
Origination of loans held for sale	(141,699		)	(227,435		)
Net decrease in derivative contract assets net of liabilities	130,250			11,235
Net increase in accrued interest receivable and other assets	(9,506		)	(19,405		)
Net increase in accrued expenses and other liabilities	3,529			12,386
Net cash provided by operating activities	496,383			300,275
Investing Activities:
Net (increase) decrease in interest-bearing deposits	(74,118		)	2,469
Purchases of available for sale investment securities	(760,575		)	(305,309		)
Proceeds from maturities and principal payments of available for sale investment securities	445,704			695,595
Purchases of held-to-maturity investment securities	(283,770		)	(887,240		)
Proceeds from maturities and principal payments of held-to-maturity investment securities	414,487			525,499
Net proceeds of Federal Home Loan Bank stock	17,826			58,306
Alternative investments return of capital, net	231			107
Net increase in loans	(826,400		)	(446,454		)
Proceeds from loans not originated for sale	674			7,445
Proceeds from life insurance policies	4,271			746
Proceeds from the sale of foreclosed and repossessed assets	7,046			5,651
Proceeds from the sale of premises and equipment	—			2,182
Additions to premises and equipment	(25,481		)	(20,034		)
Proceeds from redemption of other assets	—			7,581
Net cash used for investing activities	(1,080,105		)	(353,456		)
See accompanying Notes to Condensed Consolidated Financial Statements.

5

WEBSTER FINANCIAL CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited), continued
	Nine months ended September 30,
(In thousands)	2018			2017
Financing Activities:
Net increase in deposits	1,003,445			1,551,987
Proceeds from Federal Home Loan Bank advances	5,225,000			9,245,000
Repayments of Federal Home Loan Bank advances	(5,460,221		)	(10,580,218		)
Net decrease in securities sold under agreements to repurchase and other borrowings	(78,781		)	(46,624		)
Dividends paid to common shareholders	(85,002		)	(70,732		)
Dividends paid to preferred shareholders	(5,906		)	(6,072		)
Exercise of stock options	2,110			5,301
Common stock repurchase program	(12,158		)	(11,585		)
Common shares purchased related to stock compensation plan activity	(13,689		)	(9,295		)
Net cash provided by financing activities	574,798			77,762
Net (decrease) increase in cash and due from banks	(8,924		)	24,581
Cash and due from banks at beginning of period	231,158			190,663
Cash and due from banks at end of period	$	222,234		$	215,244
Supplemental disclosure of cash flow information:
Interest paid	$	104,861		$	85,242
Income taxes paid	51,237			78,832
Noncash investing and financing activities:
Transfer of loans and leases to foreclosed properties and repossessed assets	$	5,548		$	6,503
Transfer of loans from loans and leases to loans-held-for-sale	482			—

See accompanying Notes to Condensed Consolidated Financial Statements.

6

Note 1:Summary of Significant Accounting Policies

Nature of Operations

Webster Financial Corporation is a bank holding company and financial holding company under the Bank Holding Company Act, incorporated under the laws of Delaware in 1986 and headquartered in Waterbury, Connecticut. At September 30, 2018, Webster Financial Corporation's principal asset is all of the outstanding capital stock of Webster Bank, National Association (Webster Bank).

Webster delivers financial services to individuals, families, and businesses primarily within its regional footprint from New York to Massachusetts. Webster provides business and consumer banking, mortgage lending, financial planning, trust, and investment services through banking offices, ATMs, mobile banking, and its internet website (www.websterbank.com or www.wbst.com). Webster also offers equipment financing, commercial real estate lending, and asset-based lending primarily across the Northeast. On a nationwide basis, through its HSA Bank division, Webster Bank offers and administers health savings accounts, flexible spending accounts, health reimbursement accounts, and commuter benefits.

Basis of Presentation

The accounting and reporting policies of the Company that materially affect its financial statements conform with U.S. Generally Accepted Accounting Principles (GAAP). The accompanying unaudited Condensed Consolidated Financial Statements of the Company have been prepared in conformity with the instructions for Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all the information and notes required by GAAP for complete financial statements and should be read in conjunction with the Company's Consolidated Financial Statements, and Notes thereto, for the year ended December 31, 2017, included in the Company's Annual Report on Form 10-K filed with the U.S. Securities and Exchange Commission (SEC) on March 1, 2018.

Use of Estimates

The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities as of the date of the financial statements as well as income and expense during the period. Actual results could differ from those estimates. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for the full year or any future period.

Federal Deposit Insurance Corporation (FDIC) Assessment.

Reclassification of certain loans under existing and modified FDIC loan category classifications resulted in an obligation for additional FDIC premiums for the period June 30, 2015 through December 31, 2017. An initial accrual of approximately $7.2 million was made in the second quarter to establish an expected liability at June 30, 2018. During the third quarter, the Company made a $10.0 million payment to the FDIC to resolve its obligation.

Accounting Standards Adopted During 2018

Effective January 1, 2018, the following new Accounting Standards Updates (ASUs) were adopted by the Company:

ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.

The Update shortens the amortization period for certain investments in callable debt securities purchased at a premium by requiring that the premium be amortized to the earliest call date. Prior to adoption, the Company amortized the premium as a yield adjustment over the contractual life of such debt securities held within the portfolio. The Update accelerates the Company's recognition of premium amortization on those debt securities.

The Company adopted the Update during the first quarter of 2018 on a modified retrospective basis. As a result, the Company recorded a $2.8 million cumulative-effect adjustment directly to retained earnings as of January 1, 2018.

7

ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715) - Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.

The Update requires the Company to retrospectively report service cost as a part of compensation expense and the other components of net periodic benefit cost separately from service cost in the Company's consolidated financial statements. The Company previously included all components of net periodic benefit cost as a component of compensation and benefits expense. Upon adoption, only service cost remains in compensation and benefits expense, while the interest cost on benefit obligations, expected return on plan assets, amortization of prior service cost, and recognized net loss components of the net periodic benefit cost are included in other expense.

The Company adopted the Update during the first quarter of 2018 on a retrospective basis. As a result, the Company reclassified, for prior periods, the components of it's net periodic benefit costs other than the service cost component from compensation and benefits to other expense in the accompanying Condensed Consolidated Statements of Income. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

ASU No. 2016-15, Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments.

The Update addresses the following eight specific cash flow issues, with the objective of reducing the existing diversity in practice: debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle.

The Company adopted the Update during the first quarter of 2018 on a retrospective basis. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10) - Recognition and Measurement of Financial Assets and Financial Liabilities, and ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10) - Recognition and Measurement of Financial Assets and Financial Liabilities.

The Updates included targeted amendments in connection with the recognition, measurement, presentation, and disclosure of financial instruments. The main provisions require investments in equity securities to be measured at fair value through net income, unless they qualify for a practical expedient, and require fair value changes arising from changes in instrument-specific credit risk for financial liabilities that are measured under the fair value option to be recognized in other comprehensive income. The provisions also emphasized the existing requirement to use exit prices to measure fair value for disclosure purposes.

The Company adopted the Updates during the first quarter of 2018 primarily on a modified retrospective basis. As a result, the Company recorded a benefit of $1.4 million for a cumulative-effect adjustment directly to retained earnings as of January 1, 2018, due to a change in valuation method, from cost less impairment, to net asset value using the practical expedient. Also, the measurement alternative has been elected for equity securities, existing as of January 1, 2018, without readily determinable fair values on a prospective basis.

ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) and subsequent ASUs issued to clarify this Topic.

The Update, and subsequent related updates, establish a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most previous revenue recognition guidance, including industry-specific guidance. The Updates are intended to increase comparability across industries. The core principle of the revenue model is that a company will recognize revenue when it transfers control of goods or services to customers, at an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services.

The Company adopted the Updates during the first quarter of 2018 on a modified retrospective transition approach. The Company did not identify any material changes to the timing of revenue recognition. The Company is changing how it presents certain recurring revenue streams associated with wealth and investment services as other income, versus a contra expense. The adoption of this guidance did not have a material impact on the Company's financial condition or results of operations, and there was no cumulative effect adjustment to opening retained earnings as no material changes were identified in the timing of revenue recognition, however, additional disclosure has been incorporated in Note 17:Revenue from Contracts with Customers.

8

Accounting Standards Issued But Not Yet Adopted

The following list identifies ASUs applicable to the Company that have been issued by the FASB but are not yet effective:

ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract

The Update aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The updated guidance also requires an entity to amortize the capitalized implementation costs as an expense over the term of the hosting arrangement and to present in the same income statement line item as the fees associated with the hosting arrangement.

This Update is effective for the Company on January 1, 2020, with early adoption permitted. The Company does not intend to early adopt this Update. The Company will apply the amendments in this update prospectively to all implementation costs incurred after the date of adoption. The Company does not expect this Update to have a material impact on its consolidated financial statements.

ASU No. 2018-14, Compensation-Retirement Benefits - Defined Benefit Plan - General (Subtopic 715-20) - Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans  

The Update modifies the disclosure requirements for defined benefit pension plans and other postretirement plans. This updated guidance will be effective for the Company on January 1, 2021. The Company does not expect this Update to have a material impact on its consolidated financial statements.

ASU No. 2018-13, Fair Value Measurement (Topic 820) - Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement

The Update modifies the disclosure requirements on fair value measurements. The updated guidance will no longer require entities to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy. However, it will require public companies to disclose changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 measurements.

This Update is effective for the Company on January 1, 2020, and earlier adoption is permitted. The Company does not expect this Update to have a material impact on its consolidated financial statements.

ASU No. 2017-12, Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities.

The purpose of the Update is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. The update requires a modified retrospective transition method in which a Company will recognize a cumulative effect of the change on the opening balance for each affected component of equity in the financial statements as of the date of adoption.

The Update is effective for the Company on January 1, 2019. The Company does not expect the new guidance to have a material impact on its consolidated financial statements.

ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.

The Update simplifies quantitative goodwill impairment testing by requiring entities to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for any amount by which the carrying amount exceeds the reporting unit's fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit.

This changes current guidance by eliminating the second step of the goodwill impairment analysis which involves calculating the implied fair value of goodwill determined in the same manner as the amount of goodwill recognized in a business combination upon acquisition. Entities will still have the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary.

The Update is effective for the Company on January 1, 2020 and early adoption is permitted. The Update must be applied prospectively. The Company does not expect the new guidance to have a material impact on its consolidated financial statements.

9

ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments.

Current GAAP requires an incurred loss methodology for recognizing credit losses. This approach delays recognition until it is probable a loss has been incurred. Both financial institutions and users of their financial statements expressed concern that current GAAP restricts the ability to record credit losses that are expected, but do not yet meet the probable threshold.

The main objective of this Update is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. To achieve this objective, the amendments in this Update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to determine credit loss estimates.

The Change from an incurred loss method to an expected loss method represents a fundamental shift from existing GAAP and may result in a material increase to the Company's accounting for credit losses on financial instruments. To prepare for implementation of the new standard the Company has established a project lead and has empowered a cross functional steering committee comprised of members from different disciplines including Credit, Finance and Treasury as well as specific working groups to focus on key components of the development process. Through these working groups, the Company has begun to evaluate the effect that this Update will have on its financial statements and related disclosures. An implementation project plan has been created and is made up of targeted work streams focused on credit models, data management, treasury, and accounting. These work streams are collectively assessing required resources, use of existing and new models, and data availability. The Company expects that the new credit models will include additional assumptions used to calculate credit losses over the estimated life of the financial assets and will include expected future changes in macroeconomic conditions. The Company contracted with system solution providers and is in the process of implementing the selected solutions that will be used to run its credit loss models.

The Update is effective for the Company on January 1, 2020. The impact of adopting the Update is expected to be influenced by assessment of the composition, characteristics, and credit quality of our loan and securities portfolios as well as the economic conditions in effect at the adoption date. Therefore, we are unable to reasonably estimate the impact of adopting the Update at this time.

ASU No. 2016-02, Leases (Topic 842) and subsequent ASUs issued to amend this Topic.

The Update introduces a lessee model that requires substantially all leases to be recorded as assets and liabilities on the balance sheet and will require both quantitative and qualitative disclosures regarding key information about leasing arrangements. During Q3 2018, the FASB issued a subsequent Update which, among other issues, incorporates a new transition method option that would allow the Company to use the effective date, January 1, 2019 for the Company, as the date of initial application of the new leases standard and recognize cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Company currently expects to elect this transition method.

The Company is in the process of reviewing its existing leases, and certain service contracts for embedded leases, to evaluate the impact of these Updates on the consolidated financial statements. The Company has engaged a third party consultant to assist with the implementation efforts and has selected a third party software solution to assist with the accounting under these Updates.

The Updates are effective beginning January 1, 2019 and early adoption is permitted. The Company does not plan to early adopt, and the effect of the adoption will depend on the lease portfolio at the time of transition.

SEC’s Final Rule on Disclosure Update and Simplification

The Securities and Exchange Commission (the “SEC”) recently adopted the Final Rule, Disclosure Update and Simplification, that amends certain of the SEC’s disclosure requirements to reduce redundant, duplicative, or outdated disclosures due to changes in U.S. GAAP, International Financial Reporting Standards, or changes in technology or the business environment. While most of the amendments included in the SEC’s Final Rule eliminate certain disclosure requirements, one amendment will require expanded interim disclosures for stockholders’ equity and which would include disclosures of dividends per share for each class of share rather than only for common stock, as well as disclosure for changes in stockholders’ equity in interim periods. This Final Rule will be effective for all filings submitted on or after November 5, 2018. However, after the issuance of the Final Rule, the SEC published an interpretation that provides an extended transition period for companies to comply with the new interim disclosure requirement. The Company will comply with the new interim disclosure requirement when it files its first quarter 2019 Form 10-Q and does not expect the new disclosure requirement to have a material impact on its financial statements.

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Note 2:Variable Interest Entities

The Company has an investment interest in the following entities that meet the definition of a variable interest entity (VIE).

Consolidated

Rabbi Trust. The Company established a Rabbi Trust to meet the obligations due under its Deferred Compensation Plan for Directors and Officers and to mitigate the expense volatility of the aforementioned plan. The funding of the Rabbi Trust and the discontinuation of the Deferred Compensation Plan for Directors and Officers occurred during 2012.

Investments held in the Rabbi Trust primarily consist of mutual funds that invest in equity and fixed income securities. The Company is considered the primary beneficiary of the Rabbi Trust as it has the power to direct the activities of the Rabbi Trust that significantly affect the VIE's economic performance and it has the obligation to absorb losses of the VIE that could potentially be significant to the VIE.

The Company consolidates the invested assets of the trust along with the total deferred compensation obligations and includes them in accrued interest receivable and other assets, and accrued expenses and other liabilities, respectively, in the accompanying Condensed Consolidated Balance Sheets. Earnings in the Rabbi Trust, including appreciation or depreciation, are reflected as other non-interest income, and changes in the corresponding liability are reflected as compensation and benefits, in the accompanying Condensed Consolidated Statements of Income. See Note 13:Fair Value Measurements for additional information.

Non-Consolidated

Securitized Investments. The Company, through normal investment activities, makes passive investments in securities issued by VIEs for which Webster is not the manager. The investment securities consist of Agency CMO, Agency MBS, Agency CMBS, CMBS, and CLO. The Company has not provided financial or other support with respect to these investment securities other than its original investment. For these investment securities, the Company determined it is not the primary beneficiary due to the relative size of its investment in comparison to the principal amount of the structured securities issued by the VIEs, the level of credit subordination which reduces the Company’s obligation to absorb losses or right to receive benefits and its inability to direct the activities that most significantly impact the economic performance of the VIEs. The Company’s maximum exposure to loss is limited to the amount of its investment in the VIEs. See Note 3:Investment Securities for additional information.

Tax Credit - Finance Investments. The Company makes equity investments in entities that finance affordable housing and other community development projects and provide a return primarily through the realization of tax benefits. In most instances the investments require the funding of capital commitments in the future. While the Company's investment in an entity may exceed 50% of its outstanding equity interests, the entity is not consolidated as Webster is not involved in its management. For these investments, the Company determined it is not the primary beneficiary due to its inability to direct the activities that most significantly impact the economic performance of the VIEs. The Company applies the proportional amortization method to account for its investments in qualified affordable housing projects.

At September 30, 2018 and December 31, 2017, the aggregate carrying value of the Company's tax credit-finance investments were $30.0 million and $33.5 million, respectively. At September 30, 2018 and December 31, 2017, unfunded commitments have been recognized, totaling $10.7 million and $17.3 million, respectively, and are included in accrued expenses and other liabilities in the accompanying Condensed Consolidated Balance Sheets.

Webster Statutory Trust. The Company owns all the outstanding common stock of Webster Statutory Trust, a financial vehicle that has issued, and in the future may issue, trust preferred securities. The trust is a VIE in which the Company is not the primary beneficiary. The trust's only assets are junior subordinated debentures issued by the Company, which were acquired by the trust using the proceeds from the issuance of the trust preferred securities and common stock. The junior subordinated debentures are included in long-term debt in the accompanying Condensed Consolidated Balance Sheets, and the related interest expense is reported as interest expense on long-term debt in the accompanying Condensed Consolidated Statements of Income.

Other Investments. The Company invests in various alternative investments in which it holds a variable interest. These investments are non-public entities which cannot be redeemed since the Company’s investment is distributed as the underlying equity is liquidated. For these investments, the Company has determined it is not the primary beneficiary due to its inability to direct the activities that most significantly impact the economic performance of the VIEs.

At September 30, 2018 and December 31, 2017, the aggregate carrying value of the Company's other investments in VIEs were $16.4 million and $13.8 million, respectively, and the total exposure of the Company's other investments in VIEs, including unfunded commitments, were $28.7 million and $22.9 million, respectively.

The Company's equity interests in Tax Credit-Finance Investments, Webster Statutory Trust, and Other Investments are included in accrued interest receivable and other assets in the accompanying Condensed Consolidated Balance Sheets. For a description of the Company's accounting policy regarding the consolidation of VIEs, refer to Note 1 to the Consolidated Financial Statements included in its Form 10-K, for the year ended December 31, 2017.

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Note 3:Investment Securities

A summary of the amortized cost and fair value of investment securities is presented below:

	At September 30, 2018									At December 31, 2017
(In thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value		Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Available-for-sale:
U.S. Treasury Bills	$	9,215	$	—	$	(1	)	$	9,214	$	1,247	$	—	$	—		$	1,247
Agency CMO	254,549		79		(8,162		)	246,466		308,989		1,158		(3,814		)	306,333
Agency MBS	1,466,973		641		(57,883		)	1,409,731		1,124,960		2,151		(19,270		)	1,107,841
Agency CMBS	610,411		—		(39,862		)	570,549		608,276		—		(20,250		)	588,026
CMBS	404,104		850		(52		)	404,902		358,984		2,157		(74		)	361,067
CLO	127,743		202		(284		)	127,661		209,075		910		(134		)	209,851
Single issuer-trust preferred	—		—		—			—		7,096		—		(46		)	7,050
Corporate debt	56,032		361		(963		)	55,430		56,504		797		(679		)	56,622
Available-for-sale	$	2,929,027	$	2,133	$	(107,207	)	$	2,823,953	$	2,675,131	$	7,173	$	(44,267	)	$	2,638,037
Held-to-maturity:
Agency CMO	$	218,351	$	143	$	(9,192	)	$	209,302	$	260,114	$	664	$	(4,824	)	$	255,954
Agency MBS	2,535,043		8,256		(110,035		)	2,433,264		2,569,735		16,989		(37,442		)	2,549,282
Agency CMBS	672,505		—		(28,222		)	644,283		696,566		—		(10,011		)	686,555
Municipal bonds and notes	684,587		804		(26,487		)	658,904		711,381		8,584		(6,558		)	713,407
CMBS	221,969		380		(3,746		)	218,603		249,273		2,175		(620		)	250,828
Private Label MBS	3		—		—			3		323		1		—			324
Held-to-maturity	$	4,332,458	$	9,583	$	(177,682	)	$	4,164,359	$	4,487,392	$	28,413	$	(59,455	)	$	4,456,350

Other-Than-Temporary Impairment

The amount in the amortized cost columns in the table above includes other-than-temporary impairment (OTTI) related to certain CLO positions that were previously considered Covered Funds as defined by Section 619 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (Dodd-Frank Act), commonly known as the Volcker Rule. The Company has taken measures to bring its CLO positions into conformance with the Volcker Rule.

The following table presents activity for OTTI:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	1,103		$	3,231		$	1,364		$	3,243
Reduction for investment securities called	(281		)	(1,028		)	(542		)	(1,166		)
Additions for OTTI not previously recognized in earnings	—			—			—			126
Ending balance	$	822		$	2,203		$	822		$	2,203

To the extent that changes occur in interest rates, credit movements, or other factors that impact fair value and expected recovery of amortized cost of its investment securities, the Company may, in future periods, be required to recognize OTTI in earnings.

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Fair Value and Unrealized Losses

The following tables provide information on fair value and unrealized losses for the individual investment securities with an unrealized loss, aggregated by classification and length of time that the individual investment securities have been in a continuous unrealized loss position:

	At September 30, 2018
	Less Than Twelve Months					Twelve Months or Longer					Total
(Dollars in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			# of Holdings	Fair Value		Unrealized Losses
Available-for-sale:
U.S. Treasury Bills	$	9,214	$	(1	)	$	—	$	—		2	$	9,214	$	(1	)
Agency CMO	108,055		(2,046		)	123,570		(6,116		)	43	231,625		(8,162		)
Agency MBS	632,866		(13,665		)	751,739		(44,218		)	185	1,384,605		(57,883		)
Agency CMBS	28,075		(1,074		)	542,474		(38,788		)	37	570,549		(39,862		)
CMBS	68,695		(52		)	—		—			14	68,695		(52		)
CLO	41,156		(143		)	15,009		(141		)	3	56,165		(284		)
Single issuer-trust preferred	—		—			—		—			—	—		—
Corporate debt	8,862		(72		)	17,157		(891		)	5	26,019		(963		)
Available-for-sale in an unrealized loss position	$	896,923	$	(17,053	)	$	1,449,949	$	(90,154	)	289	$	2,346,872	$	(107,207	)
Held-to-maturity:
Agency CMO	$	31,749	$	(959	)	$	155,428	$	(8,233	)	26	$	187,177	$	(9,192	)
Agency MBS	757,451		(20,783		)	1,467,605		(89,252		)	274	2,225,056		(110,035		)
Agency CMBS	43,474		(697		)	600,808		(27,525		)	57	644,282		(28,222		)
Municipal bonds and notes	343,560		(11,463		)	216,401		(15,024		)	272	559,961		(26,487		)
CMBS	160,047		(3,256		)	17,152		(490		)	21	177,199		(3,746		)
Held-to-maturity in an unrealized loss position	$	1,336,281	$	(37,158	)	$	2,457,394	$	(140,524	)	650	$	3,793,675	$	(177,682	)

	At December 31, 2017
	Less Than Twelve Months					Twelve Months or Longer					Total
(Dollars in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			# of Holdings	Fair Value		Unrealized Losses
Available-for-sale:
U.S. Treasury Bills	$	—	$	—		$	—	$	—		—	$	—	$	—
Agency CMO	81,001		(449		)	119,104		(3,365		)	27	200,105		(3,814		)
Agency MBS	416,995		(2,920		)	606,021		(16,350		)	135	1,023,016		(19,270		)
Agency CMBS	54,182		(851		)	533,844		(19,399		)	36	588,026		(20,250		)
CMBS	23,869		(74		)	—		—			6	23,869		(74		)
CLO	56,335		(134		)	—		—			3	56,335		(134		)
Single issuer-trust preferred	7,050		(46		)	—		—			1	7,050		(46		)
Corporate debt	11,082		(395		)	6,265		(284		)	4	17,347		(679		)
Available-for-sale in an unrealized loss position	$	650,514	$	(4,869	)	$	1,265,234	$	(39,398	)	212	$	1,915,748	$	(44,267	)
Held-to-maturity:
Agency CMO	$	98,090	$	(1,082	)	$	106,775	$	(3,742	)	22	$	204,865	$	(4,824	)
Agency MBS	762,107		(4,555		)	1,197,839		(32,887		)	205	1,959,946		(37,442		)
Agency CMBS	576,770		(7,599		)	109,785		(2,412		)	56	686,555		(10,011		)
Municipal bonds and notes	6,432		(38		)	226,861		(6,520		)	92	233,293		(6,558		)
CMBS	92,670		(413		)	14,115		(207		)	13	106,785		(620		)
Held-to-maturity in an unrealized loss position	$	1,536,069	$	(13,687	)	$	1,655,375	$	(45,768	)	388	$	3,191,444	$	(59,455	)

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Impairment Analysis

The following impairment analysis summarizes the basis for evaluating if investment securities within the Company’s available-for-sale and held-to-maturity portfolios are impaired as of September 30, 2018. Unless otherwise noted for an investment security type, management does not intend to sell these investment securities and has determined, based upon available evidence, that it is more likely than not that the Company will not be required to sell these investment securities before the recovery of their amortized cost. As such, based on the following impairment analysis, the Company does not consider any of these investment securities, in unrealized loss positions, to be other-than-temporarily impaired at September 30, 2018.

Available-for-Sale Securities

Agency CMO. There were unrealized losses of $8.2 million on the Company’s investment in Agency CMO at September 30, 2018, compared to $3.8 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances decreased for this asset class since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Agency MBS. There were unrealized losses of $57.9 million on the Company’s investment in residential mortgage-backed securities issued by government agencies at September 30, 2018, compared to $19.3 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances increased for this asset class since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Agency CMBS. There were unrealized losses of $39.9 million on the Company's investment in commercial mortgage-backed securities issued by government agencies at September 30, 2018, compared to $20.3 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances increased for this asset class since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

CMBS. There were unrealized losses of $52 thousand on the Company’s investment in CMBS at September 30, 2018, compared to $74 thousand at December 31, 2017. Unrealized losses and balances were essentially unchanged for the portfolio of mainly floating rate CMBS at September 30, 2018 compared to December 31, 2017. Internal stress tests are performed on individual bonds to monitor potential losses under stress scenarios. Contractual cash flows for the bonds continue to perform as expected.

CLO. There were unrealized losses of $284 thousand on the Company’s investments in CLO at September 30, 2018 compared to $134 thousand unrealized losses at December 31, 2017. Unrealized losses remained insignificant while principal balances decreased from December 31, 2017. Contractual cash flows for the bonds continue to perform as expected.

Corporate debt. There were unrealized losses of $963 thousand on the Company's corporate debt portfolio at September 30, 2018, compared to $679 thousand at December 31, 2017. Unrealized losses and balances were essentially unchanged since December 31, 2017. The Company performs periodic credit reviews of the issuer to assess the likelihood for ultimate recovery of amortized cost. Contractual cash flows for the bonds continue to perform as expected.

Held-to-Maturity Securities

Agency CMO. There were unrealized losses of $9.2 million on the Company’s investment in Agency CMO at September 30, 2018, compared to $4.8 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances decreased since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Agency MBS. There were unrealized losses of $110.0 million on the Company’s investment in residential mortgage-backed securities issued by government agencies at September 30, 2018, compared to $37.4 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances were essentially unchanged for this asset class since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

14

Agency CMBS. There were unrealized losses of $28.2 million on the Company’s investment in commercial mortgage-backed securities issued by government agencies at September 30, 2018, compared to $10.0 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances decreased since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Municipal bonds and notes. There were unrealized losses of $26.5 million on the Company’s investment in municipal bonds and notes at September 30, 2018, compared to $6.6 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances decreased since December 31, 2017. The Company performs periodic credit reviews of the issuers and the securities are currently performing as expected.

CMBS. There were unrealized losses of $3.7 million on the Company’s investment in CMBS at September 30, 2018, compared to $0.6 million unrealized losses at December 31, 2017. Unrealized losses increased due to higher market rates on mainly seasoned fixed rate conduit transactions while principal balances decreased since December 31, 2017. Internal stress tests are performed on individual bonds to monitor potential losses under stress scenarios. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Sales of Available-for Sale Investment Securities

There were no sales during the three and nine months ended September 30, 2018 and 2017.

Contractual Maturities

The amortized cost and fair value of debt securities by contractual maturity are set forth below:

	At September 30, 2018
	Available-for-Sale				Held-to-Maturity
(In thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in one year or less	$	29,730	$	29,750	$	6,352	$	6,378
Due after one year through five years	31,012		31,092		4,244		4,272
Due after five through ten years	276,583		276,143		40,016		39,933
Due after ten years	2,591,702		2,486,968		4,281,846		4,113,776
Total debt securities	$	2,929,027	$	2,823,953	$	4,332,458	$	4,164,359

For the maturity schedule above, mortgage-backed securities and CLO, which are not due at a single maturity date, have been categorized based on the maturity date of the underlying collateral. Actual principal cash flows may differ from this maturity date presentation as borrowers have the right to prepay obligations with or without prepayment penalties.

At September 30, 2018, the Company had a carrying value of $1.1 billion in callable investment securities in its CMBS, CLO, and municipal bond portfolios. The Company considers prepayment risk in the evaluation of its interest rate risk profile. These maturities may not reflect actual durations, which may be impacted by prepayments.

Investment securities with a carrying value totaling $2.5 billion at September 30, 2018 and $2.4 billion December 31, 2017 were pledged to secure public funds, trust deposits, repurchase agreements, and for other purposes, as required or permitted by law.

15

Note 4:Loans and Leases

The following table summarizes loans and leases:

(In thousands)	At September 30, 2018		At December 31, 2017
Residential	$	4,415,063	$	4,490,878
Consumer	2,441,181		2,590,225
Commercial	6,174,396		5,368,694
Commercial Real Estate	4,771,325		4,523,828
Equipment Financing	519,054		550,233
Loans and leases (1) (2)	$	18,321,019	$	17,523,858

(1) Loans and leases include net deferred fees and net premiums/discounts of $13.6 million and $20.6 million at September 30, 2018 and December 31, 2017, respectively.

(2) At September 30, 2018 the Company had pledged $7.1 billion of eligible residential, consumer, and commercial loans as collateral to support borrowing capacity at the Federal Home Loan Bank (FHLB) of Boston and the Federal Reserve Bank (FRB) of Boston.

Loans and Leases Aging

The following tables summarize the aging of loans and leases:

	At September 30, 2018
(In thousands)	30-59 Days Past Due and Accruing		60-89 Days Past Due and Accruing		90 or More Days Past Due and Accruing		Non-accrual		Total Past Due and Non-accrual		Current		Total Loans and Leases
Residential	$	9,023	$	5,510	$	—	$	49,469	$	64,002	$	4,351,061	$	4,415,063
Consumer:
Home equity	9,519		3,442		—		35,174		48,135		2,165,340		2,213,475
Other consumer	1,819		898		—		1,490		4,207		223,499		227,706
Commercial:
Commercial non-mortgage	659		543		147		55,040		56,389		5,148,962		5,205,351
Asset-based	—		—		—		1,029		1,029		968,016		969,045
Commercial real estate:
Commercial real estate	2,715		35		—		7,254		10,004		4,564,320		4,574,324
Commercial construction	—		—		—		—		—		197,001		197,001
Equipment financing	1,371		3,617		—		3,339		8,327		510,727		519,054
Total	$	25,106	$	14,045	$	147	$	152,795	$	192,093	$	18,128,926	$	18,321,019

	At December 31, 2017
(In thousands)	30-59 Days Past Due and Accruing		60-89 Days Past Due and Accruing		90 or More Days Past Due and Accruing		Non-accrual		Total Past Due and Non-accrual		Current		Total Loans and Leases
Residential	$	8,643	$	5,146	$	—	$	44,481	$	58,270	$	4,432,608	$	4,490,878
Consumer:
Home equity	12,668		5,770		—		35,645		54,083		2,298,185		2,352,268
Other consumer	2,556		1,444		—		1,707		5,707		232,250		237,957
Commercial:
Commercial non-mortgage	5,212		603		644		39,214		45,673		4,488,242		4,533,915
Asset-based	—		—		—		589		589		834,190		834,779
Commercial real estate:
Commercial real estate	478		77		248		4,484		5,287		4,238,987		4,244,274
Commercial construction	—		—		—		—		—		279,554		279,554
Equipment financing	1,732		626		—		393		2,751		547,482		550,233
Total	$	31,289	$	13,666	$	892	$	126,513	$	172,360	$	17,351,498	$	17,523,858

Interest on non-accrual loans and leases that would have been recorded as additional interest income had the loans and leases been current in accordance with the original terms totaled $4.3 million and $2.8 million for the three months ended September 30, 2018 and 2017, respectively, and $7.9 million and $6.4 million for the nine months ended September 30, 2018 and 2017, respectively.

16

Allowance for Loan and Lease Losses

The following tables summarize the activity in, as well as the loan and lease balances that were evaluated for, the allowance for loan and lease losses (ALLL):

	At or for the three months ended September 30, 2018
	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	19,007		$	31,759		$	95,340		$	55,833		$	5,383		$	207,322
Provision (benefit) charged to expense	407			474			5,686			4,146			(213		)	10,500
Charge-offs	(874		)	(4,863		)	(740		)	(1,922		)	(136		)	(8,535		)
Recoveries	133			1,827			431			143			11			2,545
Balance, end of period	$	18,673		$	29,197		$	100,717		$	58,200		$	5,045		$	211,832

	At or for the three months ended September 30, 2017
(In thousands)	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	18,427		$	42,488		$	79,964		$	52,402		$	6,297		$	199,578
(Benefit) provision charged to expense	(348		)	(41		)	12,166			(2,129		)	502			10,150
Charge-offs	(585		)	(6,197		)	(3,002		)	(749		)	(121		)	(10,654		)
Recoveries	280			1,894			466			10			79			2,729
Balance, end of period	$	17,774		$	38,144		$	89,594		$	49,534		$	6,757		$	201,803

	At or for the nine months ended September 30, 2018
(In thousands)	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	19,058		$	36,190		$	89,533		$	49,407		$	5,806		$	199,994
Provision (benefit) charged to expense	1,316			2,967			17,596			10,678			(557		)	32,000
Charge-offs	(2,545		)	(14,844		)	(7,869		)	(2,039		)	(246		)	(27,543		)
Recoveries	844			4,884			1,457			154			42			7,381
Balance, end of period	$	18,673		$	29,197		$	100,717		$	58,200		$	5,045		$	211,832
Individually evaluated for impairment	$	4,319		$	1,428		$	10,491		$	1,544		$	15		$	17,797
Collectively evaluated for impairment	$	14,354		$	27,769		$	90,226		$	56,656		$	5,030		$	194,035
Loan and lease balances:
Individually evaluated for impairment	$	105,600		$	39,808		$	104,353		$	9,767		$	6,489		$	266,017
Collectively evaluated for impairment	4,309,463			2,401,373			6,070,043			4,761,558			512,565			18,055,002
Loans and leases	$	4,415,063		$	2,441,181		$	6,174,396		$	4,771,325		$	519,054		$	18,321,019

	At or for the nine months ended September 30, 2017
(In thousands)	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	23,226		$	45,233		$	71,905		$	47,477		$	6,479		$	194,320
(Benefit) provision charged to expense	(4,436		)	6,847			21,905			2,987			597			27,900
Charge-offs	(1,940		)	(18,273		)	(5,321		)	(951		)	(425		)	(26,910		)
Recoveries	924			4,337			1,105			21			106			6,493
Balance, end of period	$	17,774		$	38,144		$	89,594		$	49,534		$	6,757		$	201,803
Individually evaluated for impairment	$	4,925		$	1,689		$	10,844		$	290		$	38		$	17,786
Collectively evaluated for impairment	$	12,849		$	36,455		$	78,750		$	49,244		$	6,719		$	184,017
Loan and lease balances:
Individually evaluated for impairment	$	116,706		$	46,224		$	85,385		$	18,199		$	3,642		$	270,156
Collectively evaluated for impairment	4,382,735			2,520,759			5,262,918			4,446,718			563,135			17,176,265
Loans and leases	$	4,499,441		$	2,566,983		$	5,348,303		$	4,464,917		$	566,777		$	17,446,421

17

Impaired Loans and Leases

The following tables summarize impaired loans and leases:

	At September 30, 2018
(In thousands)	Unpaid Principal Balance		Total Recorded Investment		Recorded Investment No Allowance		Recorded Investment With Allowance		Related Valuation Allowance
Residential	$	115,959	$	105,600	$	66,484	$	39,116	$	4,319
Consumer - home equity	45,299		39,808		30,924		8,884		1,428
Commercial :
Commercial non-mortgage	117,223		103,324		65,968		37,356		10,491
Asset-based	1,074		1,029		1,029		—		—
Commercial real estate	12,239		9,767		2,561		7,206		1,544
Equipment financing	6,536		6,489		6,164		325		15
Total	$	298,330	$	266,017	$	173,130	$	92,887	$	17,797

	At December 31, 2017
(In thousands)	Unpaid Principal Balance		Total Recorded Investment		Recorded Investment No Allowance		Recorded Investment With Allowance		Related Valuation Allowance
Residential	$	125,352	$	114,295	$	69,759	$	44,536	$	4,805
Consumer - home equity	50,809		45,436		34,418		11,018		1,668
Commercial :
Commercial non-mortgage	79,900		71,882		27,313		44,569		9,786
Asset-based	3,272		589		589		—		—
Commercial real estate	11,994		11,226		6,387		4,839		272
Equipment financing	3,409		3,325		2,932		393		23
Total	$	274,736	$	246,753	$	141,398	$	105,355	$	16,554

The following table summarizes the average recorded investment and interest income recognized for impaired loans and leases:

	Three months ended September 30,												Nine months ended September 30,
	2018						2017						2018						2017
(In thousands)	Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income		Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income		Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income		Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income
Residential	$	107,618	$	923	$	301	$	118,841	$	1,027	$	285	$	109,948	$	2,852	$	819	$	118,065	$	3,133	$	986
Consumer - home equity	40,722		292		238		46,753		341		246		42,622		876		738		45,972		998		808
Commercial:
Commercial non-mortgage	94,618		847		—		81,816		249		—		87,603		2,257		—		64,932		704		—
Asset based	1,095		—		—		4,279		—		—		809		—		—		4,279		—		—
Commercial real estate:
Commercial real estate	11,222		30		—		20,249		96		—		10,497		164		—		20,647		329		—
Commercial construction	—		—		—		828		—		—		—		—		—		831		12		—
Equipment financing	6,337		41		—		4,895		30		—		4,907		112		—		5,031		168		—
Total	$	261,612	$	2,133	$	539	$	277,661	$	1,743	$	531	$	256,386	$	6,261	$	1,557	$	259,757	$	5,344	$	1,794

18

Credit Quality Indicators. To measure credit risk for the commercial, commercial real estate, and equipment financing portfolios, the Company employs a dual grade credit risk grading system for estimating the probability of default (PD) and the loss given default (LGD). The credit risk grade system assigns a rating to each borrower and to the facility, which together form a Composite Credit Risk Profile. The credit risk grade system categorizes borrowers by common financial characteristics that measure the credit strength of borrowers and facilities by common structural characteristics. The Composite Credit Risk Profile has ten grades, with each grade corresponding to a progressively greater risk of default. Grades (1) - (6) are considered pass ratings, and (7) - (10) are considered criticized, as defined by the regulatory agencies. Risk ratings, assigned to differentiate risk within the portfolio, are reviewed on an ongoing basis and revised to reflect changes in a borrower's current financial position and outlook, risk profile, and the related collateral and structural position. Loan officers review updated financial information on at least an annual basis for all pass rated loans to assess the accuracy of the risk grade. Criticized loans undergo more frequent reviews and enhanced monitoring.

A (7) Special Mention credit has the potential weakness that, if left uncorrected, may result in deterioration of the repayment prospects for the asset. An (8) Substandard asset has a well defined weakness that jeopardizes the full repayment of the debt. An asset rated (9) Doubtful has all of the same weaknesses as a substandard credit with the added characteristic that the weakness makes collection or liquidation in full, given current facts, conditions, and values, improbable. Assets classified as (10) Loss, in accordance with regulatory guidelines, are considered uncollectible and charged off.

The following table summarizes commercial, commercial real estate and equipment financing loans and leases segregated by risk rating exposure:

	Commercial				Commercial Real Estate				Equipment Financing
(In thousands)	At September 30, 2018		At December 31, 2017		At September 30, 2018		At December 31, 2017		At September 30, 2018		At December 31, 2017
(1) - (6) Pass	$	5,742,170	$	5,048,162	$	4,561,901	$	4,355,916	$	499,167	$	525,105
(7) Special Mention	188,905		104,594		105,778		62,065		1,574		8,022
(8) Substandard	236,246		206,883		103,646		105,847		18,313		17,106
(9) Doubtful	7,075		9,055		—		—		—		—
Total	$	6,174,396	$	5,368,694	$	4,771,325	$	4,523,828	$	519,054	$	550,233

For residential and consumer loans, the primary credit quality indicator that the Company considers is past due status. Other factors, such as, updated Fair Isaac Corporation (FICO) scores, employment status, collateral, geography, loans discharged in bankruptcy, and the status of first lien position loans on second lien position loans, may also be evaluated as credit quality indicators. On an ongoing basis for portfolio monitoring purposes, the Company estimates the current value of property secured as collateral for home equity and residential first mortgage lending products. The estimate is based on home price indices compiled by the S&P/Case-Shiller Home Price Indices. The real estate price data is applied to the loan portfolios taking into account the age of the most recent valuation and geographic area.

Troubled Debt Restructurings

The following table summarizes information for troubled debt restructurings (TDRs):

(Dollars in thousands)	At September 30, 2018		At December 31, 2017
Accrual status	$	145,219	$	147,113
Non-accrual status	95,154		74,291
Total recorded investment of TDRs	$	240,373	$	221,404
Specific reserves for TDRs included in the balance of ALLL	$	16,338	$	12,384
Additional funds committed to borrowers in TDR status	2,926		2,736

For the portion of TDRs deemed to be uncollectible, Webster charged off $1.1 million and $0.4 million for the three months ended September 30, 2018 and 2017, respectively, and $6.3 million, and $3.0 million for the nine months ended September 30, 2018 and 2017, respectively.

19

The following table provides information on the type of concession for loans and leases modified as TDRs:

	Three months ended September 30,						Nine months ended September 30,
	2018			2017			2018			2017
	Number of Loans and Leases	Post- Modification Recorded Investment(1)		Number of Loans and Leases	Post- Modification Recorded Investment(1)		Number of Loans and Leases	Post- Modification Recorded Investment(1)		Number of Loans and Leases	Post- Modification Recorded Investment(1)
(Dollars in thousands)
Residential
Extended Maturity	1	$	20	—	$	—	1	$	20	9	$	1,390
Adjusted Interest Rate	—	—		—	—		—	—		2	335
Maturity/Rate Combined	4	440		4	570		7	716		9	1,416
Other (2)	3	356		6	1,357		16	2,798		32	5,471
Consumer - home equity
Extended Maturity	1	148		2	158		3	341		8	822
Adjusted Interest Rate	—	—		1	247		—	—		1	247
Maturity/Rate Combined	3	170		2	399		6	618		13	3,212
Other (2)	5	258		12	839		30	1,951		55	3,733
Commercial non - mortgage
Extended Maturity	4	537		—	—		7	622		8	813
Maturity/Rate Combined	8	8,185		8	299		10	8,236		13	9,153
Other (2)	8	10,585		—	—		17	39,328		1	4
Commercial real estate
Extended Maturity	—	—		—	—		2	97		—	—
Maturity/Rate Combined	—	—		—	—		1	245		—	—
Other (2)	—	—		—	—		1	5,111		—	—
Total TDRs	37	$	20,699	35	$	3,869	101	$	60,083	151	$	26,596

(1) Post-modification balances approximate pre-modification balances. The aggregate amount of charge-offs as a result of the restructurings was not significant.

(2) Other includes covenant modifications, forbearance, loans discharged under Chapter 7 bankruptcy, or other concessions.

Loans and leases modified as TDRs within the previous 12 months and for which there was a payment default, consisted of 1 residential loan with an recorded investment of $241 thousand and 1 residential loan with an recorded investment $248 thousand for the three months ended September 30, 2018 and 2017, respectively, and 2 residential loans with an recorded investment of $261 thousand and 1 residential loan with an recorded investment $248 thousand for the nine months ended September 30, 2018 and 2017, respectively.

The recorded investment of TDRs in commercial, commercial real estate, and equipment financing segregated by risk rating exposure is as follows:

(In thousands)	At September 30, 2018		At December 31, 2017
(1) - (6) Pass	$	12,733	$	8,268
(7) Special Mention	334		355
(8) Substandard	74,822		53,050
(9) Doubtful	7,075		—
Total	$	94,964	$	61,673

20

Note 5:Transfers of Financial Assets

The Company sells financial assets in the normal course of business, primarily residential mortgage loans sold to government-sponsored enterprises through established programs and securitizations. Gains and losses from initial measurement and subsequent changes in fair value are recognized in earnings. The gain or loss on residential mortgage loans sold and the related origination fee income, as well as fair value adjustments to loans held-for-sale are included as mortgage banking activities in the accompanying Condensed Consolidated Statements of Income.

The Company may be required to repurchase a loan in the event of certain breaches of the representations and warranties, or in the event of default of the borrower within 90 days of sale, as provided for in the sale agreements. A reserve for loan repurchases provides for estimated losses pertaining to the potential repurchase of loans associated with the Company’s mortgage banking activities. The reserve reflects management’s evaluation of the identity of the counterparty, the vintage of the loans sold, the amount of open repurchase requests, specific loss estimates for each open request, the current level of loan losses in similar vintages held in the residential loan portfolio, and estimated recoveries on the underlying collateral. The reserve also reflects management’s expectation of losses from repurchase requests for which the Company has not yet been notified, as the performance of loans sold and the quality of the servicing provided by the acquirer also may impact the reserve. The provision recorded at the time of the loan sale is netted from the gain or loss recorded in mortgage banking activities, while any incremental provision, post loan sale, is recorded in other non-interest expense in the accompanying Condensed Consolidated Statements of Income.

The following table provides a summary of activity in the reserve for loan repurchases:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	674		$	843		$	872		$	790
Provision (benefit) charged to expense	18			25			(172		)	78
Repurchased loans and settlements charged off	(10		)	(18		)	(18		)	(18		)
Ending balance	$	682		$	850		$	682		$	850

The following table provides information for mortgage banking activities:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Residential mortgage loans held for sale:
Proceeds from sale	$	57,042		$	88,691		$	147,105		$	262,029
Loans sold with servicing rights retained	51,014			79,690			130,740			239,357
Net gain on sale	1,051			1,979			2,732			4,356
Ancillary fees	463			682			1,275			2,091
Fair value option adjustment	(209		)	(240		)	(323		)	1,591

The Company has retained servicing rights on residential mortgage loans totaling $2.5 billion at September 30, 2018 and $2.6 billion at December 31, 2017.

The following table presents the changes in carrying value for mortgage servicing assets:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	23,341		$	24,708		$	25,139		$	24,466
Additions	1,428			2,576			3,878			7,063
Amortization	(2,125		)	(2,144		)	(6,373		)	(6,389		)
Ending balance	$	22,644		$	25,140		$	22,644		$	25,140

Loan servicing fees, net of mortgage servicing rights amortization, were $0.3 million and $0.2 million for the three months ended September 30, 2018 and 2017, respectively, and $0.9 million and $0.6 million for the nine months ended September 30, 2018 and 2017, respectively, and are included as a component of loan related fees in the accompanying Condensed Consolidated Statements of Income.

See Note 13:Fair Value Measurements for additional fair value information on loans held for sale and mortgage servicing assets.

Additionally, loans not originated for sale were sold approximately at carrying value, for cash proceeds of $674 thousand for certain commercial loans and $7.4 million for certain residential loans for the nine months ended September 30, 2018 and 2017, respectively.

21

Note 6:Goodwill and Other Intangible Assets

Goodwill and other intangible assets by reportable segment consisted of the following:

	At September 30, 2018							At December 31, 2017
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Goodwill:
Community Banking						$	516,560						$	516,560
HSA Bank						21,813							21,813
Total goodwill						$	538,373						$	538,373
Other intangible assets:
HSA Bank - Core deposits	$	22,000	$	(10,283	)	$	11,717	$	22,000	$	(8,610	)	$	13,390
HSA Bank - Customer relationships	21,000		(5,991		)	15,009		21,000		(4,779		)	16,221
Total other intangible assets	$	43,000	$	(16,274	)	$	26,726	$	43,000	$	(13,389	)	$	29,611

As of September 30, 2018, the remaining estimated aggregate future amortization expense for intangible assets is as follows:

(In thousands)
Remainder of 2018	$	962
2019	3,847
2020	3,847
2021	3,847
2022	3,847
Thereafter	10,376

Note 7:Deposits

A summary of deposits by type follows:

(In thousands)	At September 30, 2018		At December 31, 2017
Non-interest-bearing:
Demand	$	4,231,505	$	4,191,496
Interest-bearing:
Health savings accounts	5,599,596		5,038,681
Checking	2,587,679		2,736,952
Money market	2,376,649		2,209,492
Savings	4,106,942		4,348,700
Time deposits	3,095,252		2,468,408
Total interest-bearing	17,766,118		16,802,233
Total deposits	$	21,997,623	$	20,993,729
Time deposits and interest-bearing checking, included in above balances, obtained through brokers	$	938,092	$	898,157
Time deposits, included in above balance, that exceed the FDIC limit	506,955		561,512
Deposit overdrafts reclassified as loan balances	1,761		2,210

The scheduled maturities of time deposits are as follows:

(In thousands)	At September 30, 2018
Remainder of 2018	$	683,421
2019	1,771,721
2020	437,240
2021	125,265
2022	49,295
Thereafter	28,310
Total time deposits	$	3,095,252

22

Note 8:Borrowings

Total borrowings of $2.2 billion at September 30, 2018 and $2.5 billion at December 31, 2017 are described in detail below.

The following table summarizes securities sold under agreements to repurchase and other borrowings:

	At September 30, 2018				At December 31, 2017
(In thousands)	Amount		Rate		Amount		Rate
Securities sold under agreements to repurchase (1):
Original maturity of one year or less	$	264,488	0.29	%	$	288,269	0.17	%
Original maturity of greater than one year, non-callable	100,000		2.50		300,000		3.10
Total securities sold under agreements to repurchase	364,488		0.89		588,269		1.66
Fed funds purchased	200,000		2.25		55,000		1.37
Securities sold under agreements to repurchase and other borrowings	$	564,488	1.37		$	643,269	1.64

(1) The Company has right of offset with respect to all repurchase agreement assets and liabilities. However, securities sold under agreements to repurchase represents the gross amount for these transactions, as only liabilities are outstanding for the periods presented.

Repurchase agreements are used as a source of borrowed funds and are collateralized by U.S. Government agency mortgage-backed securities. Repurchase agreement counterparties are limited to primary dealers in government securities and commercial or municipal customers through Webster’s Treasury Unit.

The following table provides information for FHLB advances:

	At September 30, 2018				At December 31, 2017
(Dollars in thousands)	Amount		Weighted- Average Contractual Coupon Rate		Amount		Weighted- Average Contractual Coupon Rate
Maturing within 1 year	$	948,731	2.18	%	$	1,150,000	1.48	%
After 1 but within 2 years	259,295		1.79		103,026		1.81
After 2 but within 3 years	75,000		1.51		215,000		1.73
After 3 but within 4 years	150,049		3.27		200,000		2.06		(1)
After 4 but within 5 years	193		1.69		170		—
After 5 years	8,616		2.64		8,909		2.65		(1)
FHLB advances and overall rate	$	1,441,884	2.19		$	1,677,105	1.61		(1)
Aggregate carrying value of assets pledged as collateral	$	6,773,182			$	6,402,066
Remaining borrowing capacity	3,018,052				2,600,624

(1) Weighted-average contractual coupon rates for December 31, 2017 are presented as revised for these classifications to correct an immaterial error in presentation. The percentages reported in the Company's 2017 Annual Report on Form 10-K were: After 3 but within 4 years - 4.13%; After 5 years - 1.96%; and overall rate - 1.85%.

Webster Bank is in compliance with FHLB collateral requirements for the periods presented. Eligible collateral, primarily certain residential and commercial real estate loans, has been pledged to secure FHLB advances.

The following table summarizes long-term debt:

(Dollars in thousands)		At September 30, 2018			At December 31, 2017
4.375%	Senior fixed-rate notes due February 15, 2024	$	150,000		$	150,000
Junior subordinated debt Webster Statutory Trust I floating-rate notes due September 17, 2033 (1)		77,320			77,320
Total notes and subordinated debt		227,320			227,320
Discount on senior fixed-rate notes		(638		)	(727		)
Debt issuance cost on senior fixed-rate notes		(725		)	(826		)
Long-term debt		$	225,957		$	225,767

(1) The interest rate on Webster Statutory Trust I floating-rate notes, which varies quarterly based on 3-month London Interbank Offered Rate plus 2.95%, was 5.28% at September 30, 2018 and 4.55% at December 31, 2017.

23

Note 9:Accumulated Other Comprehensive Loss, Net of Tax

The following tables summarize the changes in accumulated other comprehensive loss, net of tax (AOCL) by component:

	Three months ended September 30, 2018												Nine months ended September 30, 2018
(In thousands)	Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total			Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total
Beginning balance	$	(64,617	)	$	(10,814	)	$	(46,505	)	$	(121,936	)	$	(27,947	)	$	(15,016	)	$	(48,568	)	$	(91,531	)
(OCL) OCI before reclassifications	(13,811		)	197			—			(13,614		)	(50,481		)	1,620			—			(48,861		)
Amounts reclassified from AOCL	—			1,438			2,548			3,986			—			4,217			4,611			8,828
Net current-period OCI/(OCL)	(13,811		)	1,635			2,548			(9,628		)	(50,481		)	5,837			4,611			(40,033		)
Ending balance	$	(78,428	)	$	(9,179	)	$	(43,957	)	$	(131,564	)	$	(78,428	)	$	(9,179	)	$	(43,957	)	$	(131,564	)

	Three months ended September 30, 2017												Nine months ended September 30, 2017
(In thousands)	Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total			Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total
Beginning balance	$	(14,501	)	$	(15,258	)	$	(42,323	)	$	(72,082	)	$	(15,476	)	$	(17,068	)	$	(44,449	)	$	(76,993	)
OCI/(OCL) before reclassifications	872			(34		)	—			838			1,847			(445		)	—			1,402
Amounts reclassified from AOCL	—			1,145			1,001			2,146			—			3,366			3,127			6,493
Net current-period OCI	872			1,111			1,001			2,984			1,847			2,921			3,127			7,895
Ending balance	$	(13,629	)	$	(14,147	)	$	(41,322	)	$	(69,098	)	$	(13,629	)	$	(14,147	)	$	(41,322	)	$	(69,098	)

The following tables provide information for the items reclassified from AOCL:

(In thousands)	Three months ended September 30,						Nine months ended September 30,						Associated Line Item in the Condensed Consolidated Statements of Income
AOCL Components	2018			2017			2018			2017
Derivative instruments:
Cash flow hedges	$	(1,932	)	$	(1,810	)	$	(5,664	)	$	(5,316	)	Total interest expense
Tax benefit	494			665			1,447			1,950			Income tax expense
Net of tax	$	(1,438	)	$	(1,145	)	$	(4,217	)	$	(3,366	)
Defined benefit pension and other postretirement benefit plans:
Amortization of net loss	$	(3,431	)	$	(1,587	)	$	(6,209	)	$	(4,959	)	(1)
Tax benefit	883			586			1,598			1,832			Income tax expense
Net of tax	$	(2,548	)	$	(1,001	)	$	(4,611	)	$	(3,127	)

(1) These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost, see Note 14 - Retirement Benefit Plans for further details.

24

Note 10:Regulatory Matters

Capital Requirements

Webster Financial Corporation is subject to regulatory capital requirements administered by the Federal Reserve System, while Webster Bank is subject to regulatory capital requirements administered by the Office of the Comptroller of the Currency (OCC). Regulatory authorities can initiate certain mandatory actions if Webster Financial Corporation or Webster Bank fail to meet minimum capital requirements, which could have a direct material effect on the Company’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, both Webster Financial Corporation and Webster Bank must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. These quantitative measures require minimum amounts and ratios to ensure capital adequacy.

Basel III total risk-based capital is comprised of three categories: CET1 capital, additional Tier 1 capital, and Tier 2 capital. CET1 capital includes common shareholders' equity, less deductions for goodwill, other intangibles, and certain deferred tax adjustments. Common shareholders' equity, for purposes of CET1 capital, excludes AOCL components as permitted by the opt-out election taken by Webster upon adoption of Basel III. Tier 1 capital is comprised of CET1 capital plus perpetual preferred stock, while Tier 2 capital includes qualifying subordinated debt and qualifying allowance for credit losses, that together equal total capital.

The following table provides information on the capital ratios for Webster Financial Corporation and Webster Bank:

	At September 30, 2018
	Actual				Minimum Requirement				Well Capitalized
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
Webster Financial Corporation
CET1 risk-based capital	$	2,215,456	11.23	%	$	887,910	4.5	%	$	1,282,537	6.5	%
Total risk-based capital	2,652,270		13.44		1,578,507		8.0		1,973,133		10.0
Tier 1 risk-based capital	2,360,493		11.96		1,183,880		6.0		1,578,507		8.0
Tier 1 leverage capital	2,360,493		8.89		1,061,977		4.0		1,327,471		5.0
Webster Bank
CET1 risk-based capital	$	2,137,249	10.84	%	$	887,232	4.5	%	$	1,281,558	6.5	%
Total risk-based capital	2,351,706		11.93		1,577,302		8.0		1,971,628		10.0
Tier 1 risk-based capital	2,137,249		10.84		1,182,977		6.0		1,577,302		8.0
Tier 1 leverage capital	2,137,249		8.05		1,061,427		4.0		1,326,784		5.0

	At December 31, 2017
	Actual				Minimum Requirement				Well Capitalized
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
Webster Financial Corporation
CET1 risk-based capital	$	2,093,116	11.14	%	$	845,389	4.5	%	$	1,221,118	6.5	%
Total risk-based capital	2,517,848		13.40		1,502,914		8.0		1,878,643		10.0
Tier 1 risk-based capital	2,238,172		11.91		1,127,186		6.0		1,502,914		8.0
Tier 1 leverage capital	2,238,172		8.63		1,036,817		4.0		1,296,021		5.0
Webster Bank
CET1 risk-based capital	$	2,114,224	11.26	%	$	844,693	4.5	%	$	1,220,113	6.5	%
Total risk-based capital	2,316,580		12.34		1,501,677		8.0		1,877,097		10.0
Tier 1 risk-based capital	2,114,224		11.26		1,126,258		6.0		1,501,677		8.0
Tier 1 leverage capital	2,114,224		8.14		1,038,442		4.0		1,298,052		5.0

Dividend Restrictions

Webster Financial Corporation is dependent upon dividends from Webster Bank to provide funds for its cash requirements, including payments of dividends to shareholders. Banking regulations may limit the amount of dividends that may be paid. Approval by regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of Webster Bank to fall below specified minimum levels, or if dividends declared exceed the net income for that year combined with the undistributed net income for the preceding two years. In addition, the Office of the Comptroller of the Currency (OCC) has discretion to prohibit any otherwise permitted capital distribution on general safety and soundness grounds. Dividends paid by Webster Bank to Webster Financial Corporation totaled $220 million during the nine months ended September 30, 2018 compared to $80 million during the nine months ended September 30, 2017.

Cash Restrictions

Webster Bank is required by Federal Reserve System regulations to hold cash reserve balances on hand or with the Federal Reserve Bank. Pursuant to this requirement, Webster Bank held $98.6 million and $82.3 million at September 30, 2018 and December 31, 2017, respectively.

25

Note 11:Earnings Per Common Share

Reconciliation of the calculation of basic and diluted earnings per common share follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2018		2017		2018		2017
Earnings for basic and diluted earnings per common share:
Net income	$	99,673	$	64,496	$	261,580	$	185,546
Less: Preferred stock dividends	1,968		2,024		5,884		6,072
Net income available to common shareholders	97,705		62,472		255,696		179,474
Less: Earnings applicable to participating securities	245		46		656		212
Earnings applicable to common shareholders	$	97,460	$	62,426	$	255,040	$	179,262
Shares:
Weighted-average common shares outstanding - basic	91,959		92,125		91,912		92,003
Effect of dilutive securities:
Stock options and restricted stock	243		372		303		403
Warrants	6		6		6		6
Weighted-average common shares outstanding - diluted	92,208		92,503		92,221		92,412
Earnings per common share:
Basic	$	1.06	$	0.68	$	2.77	$	1.95
Diluted	1.06		0.67		2.77		1.94

Potential common shares from non-participating restricted stock, of 97 thousand and 80 thousand for the three months ended September 30, 2018 and 2017, respectively, and 54 thousand and 61 thousand for the nine months ended September 30, 2018 and 2017, respectively, are excluded from the effect of dilutive securities because, due to performance conditions, they would have been anti-dilutive.

26

Note 12:Derivative Financial Instruments

Risk Management Objective of Using Derivatives

Webster manages economic risks, such as interest rate, liquidity, and credit risks by managing the amount, sources, and duration of its debt funding in conjunction with the use of interest rate derivative financial instruments. Webster enters into interest rate derivatives to mitigate the exposure related to business activities that result in the future receipt or payment of, both known and uncertain, cash amounts that are impacted by interest rates. The primary objective for using interest rate derivatives is to add stability to interest expense by managing exposure to interest rate movements. To accomplish this objective, Webster uses interest rate swaps and interest rate caps as part of its interest rate risk management strategy.

Interest rate swaps and interest rate caps designated as cash flow hedges are designed to manage the risk associated with a forecasted event or an uncertain variable-rate cash flow. Forward-settle interest rate swaps protect the Company against adverse fluctuations in interest rates by reducing its exposure to variability in cash flows relating to interest payments on forecasted debt issuances. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of variable amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for payment of an up-front premium.

Cash flow hedges are used to regulate the variable cash flows associated with existing variable-rate debt and forecasted issuances of debt. Derivative instruments designated as cash flow hedges are recorded on the balance sheet at fair value. The effective portion of the change in fair value of the derivatives which are designated as cash flow hedges, and that qualify for hedge accounting, is recorded to AOCL and is reclassified into earnings in the subsequent periods that the hedged forecasted transaction affects earnings. The ineffective portion of the change in fair value of these derivatives, attributable to the difference in the effective date of the hedge and the effective date of the debt issuance, is recognized directly in earnings. During the periods presented, there was no ineffectiveness to be recognized in earnings.

Certain fixed-rate obligations can be exposed to a change in fair value attributable to changes in benchmark interest rates. On occasion, interest rate swaps will be used to manage this exposure. An interest rate swap which involves the receipt of fixed-rate amounts from a counterparty in exchange for Webster making variable-rate payments over the life of the agreement, without the exchange of the underlying notional amount, is designated as a fair value hedge. For a qualifying derivative designated as a fair value hedge, the gain or loss on the derivative, as well as the gain or loss on the hedged item, is recognized in interest expense. During the periods presented, Webster did not have any interest rate derivative financial instruments designated as fair value hedges and as a result, there was no impact to interest expense.

Additionally, in order to address certain other risk management matters, the Company also utilizes derivative instruments that do not qualify for hedge accounting. These derivative instruments, which are recorded on the balance sheet at fair value, with changes in fair value recognized each period as other non-interest income in the accompanying Condensed Consolidated Statements of Income, are described in the following paragraphs.

Interest rate swap and cap contracts are sold to commercial and other customers who wish to modify loan interest rate sensitivity. These contracts are offset with dealer counterparty transactions structured with matching terms, which results in minimal impact on earnings, except for fee income earned in such transactions. All contracts eligible for clearing are cleared through Chicago Mercantile Exchange (CME). In accordance with its amended rulebook, CME legally characterizes variation margin payments made to and received from CME as settlement of derivatives rather than as collateral against derivatives.

Risk participation agreements (RPAs) are entered into as financial guarantees of performance on interest rate swap derivatives. The purchased (asset) or sold (liability) guarantee allows the Company to participate-in (fee received) or participate-out (fee paid) the risk associated with certain derivative positions executed with the borrower by the lead bank in a loan syndication.

Other derivatives include foreign currency forward contracts related to lending arrangements and customer hedging activity, a VISA equity swap transaction, and mortgage banking derivatives such as mortgage-backed securities related to residential loan commitments and loans held for sale. Mortgage banking derivatives are utilized by Webster in its efforts to manage risk of loss associated with its mortgage loan commitments and mortgage loans held for sale. Prior to closing and funding certain single-family residential mortgage loans interest rate lock commitments are generally extended to the borrowers. During the period from commitment date to closing date, Webster is subject to the risk that market rates of interest may change. If market rates rise, investors generally will pay less to purchase such loans causing a reduction in the anticipated gain on sale of the loans, or possibly resulting in a loss. In an effort to mitigate such risk, forward delivery sales commitments are established under which Webster agrees to deliver whole mortgage loans to various investors or issue mortgage-backed securities. Mandatory forward commitments establish the price to be received upon the sale of the related mortgage loan, thereby mitigating certain interest rate risk. There is, however, still certain execution risk specifically related to Webster’s ability to close and deliver to its investors the mortgage loans it has committed to sell.

27

Balance Sheet Impact of Derivative Instruments

The following table presents the notional amounts and fair value of derivative positions:

	At September 30, 2018								At December 31, 2017
	Asset Derivatives				Liability Derivatives				Asset Derivatives				Liability Derivatives
(In thousands)	Notional Amounts		Fair Value		Notional Amounts		Fair Value		Notional Amounts		Fair Value		Notional Amounts		Fair Value
Designated as cash flow hedging instruments:
Positions subject to a master netting agreement (1)
Interest rate derivatives (2)	$	325,000	$	4,951	$	—	$	—	$	325,000	$	2,770	$	—	$	—
Not designated as hedging instruments:
Positions subject to a master netting agreement (1)
Interest rate derivatives (2)	3,852,438		13,226		76,789		215		2,791,760		5,977		721,048		1,968
Mortgage banking derivatives (3)	52,067		223		3,063		7		28,497		421		39,230		110
Other	24,879		199		23,927		435		7,914		258		30,328		419
Positions not subject to a master netting agreement (4)
Interest rate derivatives	677,679		3,090		3,242,821		83,142		1,366,299		23,009		2,146,518		25,631
RPAs	84,702		19		100,294		43		93,713		80		116,882		111
Other	6,918		300		2,517		47		—		—		2,073		184
Total not designated as hedging instruments	4,698,683		17,057		3,449,411		83,889		4,288,183		29,745		3,056,079		28,423
Gross derivative instruments, before netting	$	5,023,683	22,008		$	3,449,411	83,889		$	4,613,183	32,515		$	3,056,079	28,423
Less: Legally enforceable master netting agreements			586				586				2,245				2,245
Less: Cash collateral posted			17,709				—				6,704				—
Total derivative instruments, after netting			$	3,713			$	83,303			$	23,566			$	26,178

(1) The Company has elected to report derivative positions subject to a legally enforceable master netting agreement on a net basis, net of cash collateral. Refer to the Offsetting Derivatives section of this footnote for additional information.

(2) Balances related to CME are presented as a single unit of account. Notional amounts of interest rate swaps cleared through CME include; $2.7 billion and $1.9 billion for asset derivatives and $47 million and $595 million for liability derivatives at September 30, 2018 and December 31, 2017, respectively, with related fair values of approximately zero.

(3) Notional amounts include mandatory forward commitments of $33.0 million, while notional amounts do not include approved floating rate commitments of $9.1 million, at September 30, 2018.

(4) Fair value of assets are included in accrued interest receivable and other assets, while, fair value of liabilities are included in accrued expenses and other liabilities, in the accompanying Condensed Consolidated Balance Sheets.

Income Statement Impact of Derivative Instruments

The following table presents the effect on the income statement from derivative positions:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Designated as cash flow hedging instruments:
Interest rate derivatives (1)	$	1,667		$	1,928		$	5,158		$	5,953
Not designated as hedging instruments:
Interest rate derivatives (2)	$	1,623		$	2,955		$	7,372		$	5,850
RPAs	22			51			117			157
Mortgage banking derivatives	(26		)	(219		)	(95		)	(1,886		)
Other (2)	(226		)	(756		)	1,113			(1,748		)
Total not designated as hedging instruments (2) (3)	$	1,393		$	2,031		$	8,507		$	2,373

(1) The impact from interest rate derivatives designated as hedging instruments is included in interest expense on borrowings in the accompanying Condensed Consolidated Statements of Income.

(2) Amounts for 2017 are presented as revised to include impact of accrued interest for net customer swap arrangements.

(3) The impact from the total not designated as hedging instruments is included in other non-interest income in the accompanying Condensed Consolidated Statements of Income.

28

Amounts for the effective portion of changes in the fair value of derivatives qualifying for hedge accounting treatment are reclassified to interest expense as interest payments are made on Webster's variable-rate debt. Over the next twelve months, the Company estimates that $264 thousand will be reclassified from AOCL as an increase to interest income.

Webster records gains and losses related to hedge terminations to AOCL. These balances are subsequently amortized into interest expense over the respective terms of the hedged debt instruments. At September 30, 2018, the remaining unamortized loss on the termination of cash flow hedges is $10.1 million. Over the next twelve months, the Company estimates that $4.3 million will be reclassified from AOCL as an increase to interest expense.

Additional information about cash flow hedge activity impacting AOCL, and the related amounts reclassified to interest expense is provided in Note 9:Accumulated Other Comprehensive Loss, Net of Tax. Information about the valuation methods used to measure the fair value of derivatives is provided in Note 13:Fair Value Measurements.

Offsetting Derivatives

Non-cleared derivatives subject to a legally enforceable master netting agreement are reported on a net basis, net of cash collateral. Net gain positions are recorded as assets and are included in accrued interest receivable and other assets, while, net loss positions are recorded as liabilities and are included in accrued expenses and other liabilities, in the accompanying Condensed Consolidated Balance Sheets.

The following table presents the transition from a gross basis to net basis, due to the application of counterparty netting agreements:

	At September 30, 2018								At December 31, 2017
(In thousands)	Gross Amount		Relationship Offset		Cash Collateral Offset		Net Amount		Gross Amount		Relationship Offset		Cash Collateral Offset		Net Amount
Derivative instrument gains:
Hedge accounting	$	4,951	$	—	$	4,951	$	—	$	2,770	$	91	$	2,679	$	—
Non-hedge accounting	13,425		586		12,758		81		6,222		2,154		4,025		43
Total assets	$	18,376	$	586	$	17,709	$	81	$	8,992	$	2,245	$	6,704	$	43
Derivative instrument losses:
Hedge accounting	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Non-hedge accounting	651		586		—		65		2,387		2,245		—		142
Total liabilities	$	651	$	586	$	—	$	65	$	2,387	$	2,245	$	—	$	142

Counterparty Credit Risk

Use of derivative contracts may expose Webster Bank to counterparty credit risk. The Company has International Swaps and Derivatives Association Master Agreements, including a Credit Support Annex, with all derivative counterparties.

In accordance with counterparty credit agreements and derivative clearing rules, the Company had approximately $80.0 million in net margin collateral received from financial counterparties or the derivative clearing organization at September 30, 2018, comprised of $36.3 million in initial margin posted, $98.2 million in settlement-to-market received, and $18.1 million in collateral-to-market received. Collateral levels for approved financial institution counterparties are monitored daily and adjusted as necessary. In the event of default, should the collateral not be returned, the exposure would be offset by terminating the transaction.

The Company regularly evaluates the credit risk of its counterparties, taking into account the likelihood of default, net exposures, and remaining contractual life, among other related factors. Credit risk exposure is mitigated as transactions with customers are generally secured by the same collateral of the underlying transactions being hedged. The Company's net current credit exposure relating to interest rate derivatives with Webster Bank customers was $3.1 million at September 30, 2018. In addition, the Company monitors potential future exposure, representing its best estimate of exposure to remaining contractual maturity. The potential future exposure relating to interest rate derivatives with Webster Bank customers totaled $31.7 million at September 30, 2018.

29

Note 13:Fair Value Measurements

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is best determined using quoted market prices. However, in many instances, quoted market prices are not available. In such instances, fair values are determined using appropriate valuation techniques. Various assumptions and observable inputs must be relied upon in applying these techniques. Accordingly, categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. As such, the fair value estimates may not be realized in an immediate transfer of the respective asset or liability.

Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the entire holdings or any part of a particular financial instrument. Fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These factors are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates.

Fair Value Hierarchy

The three levels within the fair value hierarchy are as follows:

• Level 1: Valuation is based upon unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

• Level 2: Fair value is calculated using significant inputs other than quoted market prices that are directly or indirectly observable for the asset or liability. The valuation may rely on quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit ratings,) or inputs that are derived principally or corroborated by market data, by correlation, or other means.

• Level 3: Inputs for determining the fair value of the respective assets or liabilities are not observable. Level 3 valuations are reliant upon pricing models and techniques that require significant management judgment or estimation.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Available-for-Sale Investment Securities. When quoted prices are available in an active market, the Company classifies investment securities within Level 1 of the valuation hierarchy. U.S. Treasury Bills are classified within Level 1 of the fair value hierarchy.

When quoted market prices are not available, the Company employs an independent pricing service that utilizes matrix pricing to calculate fair value. Such fair value measurements consider observable data such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayments speeds, credit information, and respective terms and conditions for debt instruments. Management maintains procedures to monitor the pricing service's results and establishes processes to challenge their valuations, or methodology, that appear unusual or unexpected. Available-for-Sale investment securities which include Agency CMO, Agency MBS, Agency CMBS, CMBS, CLO, and corporate debt, are classified within Level 2 of the fair value hierarchy.

Derivative Instruments. Foreign exchange contracts are valued based on unadjusted quoted prices in active markets and classified within Level 1 of the fair value hierarchy.

All other derivative instruments are valued using third-party valuation software, which considers the present value of cash flows discounted using observable forward rate assumptions. The resulting fair values are validated against valuations performed by independent third parties and are classified within Level 2 of the fair value hierarchy. In determining if any fair value adjustment related to credit risk is required, Webster evaluates the credit risk of its counterparties by considering factors such as the likelihood of default by the counterparties, its net exposures, the remaining contractual life, as well as the amount of collateral securing the position. The change in value of derivative assets and liabilities attributable to credit risk was not significant during the reported periods.

Webster reviews its counterparty exposure on a regular basis, and, when necessary, appropriate business actions are taken to mitigate the exposure. When determining fair value, Webster applies the portfolio exception with respect to measuring counterparty credit risk for all of its derivative transactions subject to a master netting arrangement. The CME rulebook legally characterizes variation margin payments for over-the-counter derivatives as settlements rather than collateral, which impacts Webster's counterparty relationship with CME, resulting in the fair value of the instrument including cash collateral to be represented as a single unit of account.

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Mortgage Banking Derivatives. Forward sales of mortgage loans and mortgage-backed securities are utilized by the Company in its efforts to manage risk of loss associated with its mortgage loan commitments and mortgage loans held for sale. Prior to closing and funding certain single-family residential mortgage loans, an interest rate lock commitment is generally extended to the borrower. During the period from commitment date to closing date, the Company is subject to the risk that market rates of interest may change. If market rates rise, investors generally will pay less to purchase such loans resulting in a reduction in the gain on sale of the loans or, possibly, a loss. In an effort to mitigate such risk, forward delivery sales commitments are established, under which the Company agrees to deliver whole mortgage loans to various investors or into issuances of mortgage-backed securities. The fair value of mortgage banking derivatives is determined based on current market prices for similar assets in the secondary market and, therefore, classified within Level 2 of the fair value hierarchy.

Originated Loans Held For Sale. Residential mortgage loans typically are classified as held for sale upon origination based on management's intent to sell such loans. The Company has elected to measure originated loans held for sale under the fair value option of Accounting Standards Codification (ASC) Topic 825 "Financial Instruments," on a loan-by-loan basis. The fair value of residential mortgage loans held for sale is based on quoted market prices of similar loans sold in conjunction with securitization transactions. Accordingly, these loans are classified within Level 2 of the fair value hierarchy.

The following table presents the fair value, unpaid principal balance, and accrual status, of assets accounted for under the fair value option:

	At September 30, 2018							At December 31, 2017
(In thousands)	Fair Value		Unpaid Principal Balance		Difference			Fair Value		Unpaid Principal Balance		Difference
Originated loans held for sale	$	17,137	$	17,288	$	(151	)	$	20,888	$	20,346	$	542

Electing to measure originated loans held for sale at fair value reduces certain timing differences and better matches changes in the value of these assets with changes in the value of the derivatives used as an economic hedge on these assets.

Investments Held in Rabbi Trust. Investments held in the Rabbi Trust primarily include mutual funds that invest in equity and fixed income securities. Shares of mutual funds are valued based on unadjusted market prices in active markets for the underlying shares held in the mutual funds. Therefore, investments held in the Rabbi Trust are classified within Level 1 of the fair value hierarchy. Webster has elected to measure the investments held in the Rabbi Trust at fair value. The cost basis of the investments held in the Rabbi Trust is $2.0 million at September 30, 2018.

Alternative Investments. Equity investments have a readily determinable fair value when quoted prices are available in an active market. The Company classifies alternative investments with a readily determinable fair value within Level 1 of the fair value hierarchy.

Equity investments that do not have a readily available fair value may qualify for net asset value (NAV) measurement based on specific requirements. The Company's alternative investments accounted for at NAV consist of investments in non-public entities that generally cannot be redeemed since the Company’s investments are distributed as the underlying equity is liquidated. Alternative investments recorded at NAV are not classified within the fair value hierarchy. At September 30, 2018, these alternative investments had a remaining unfunded commitment of $1.1 million.

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Summaries of the fair values of assets and liabilities measured at fair value on a recurring basis are as follows:

	At September 30, 2018
(In thousands)	Level 1		Level 2		Level 3		NAV		Total
Financial assets held at fair value:
U.S. Treasury Bills	$	9,214	$	—	$	—	$	—	$	9,214
Agency CMO	—		246,466		—		—		246,466
Agency MBS	—		1,409,731		—		—		1,409,731
Agency CMBS	—		570,549		—		—		570,549
CMBS	—		404,902		—		—		404,902
CLO	—		127,661		—		—		127,661
Single issuer-trust preferred	—		—		—		—		—
Corporate debt	—		55,430		—		—		55,430
Total available-for-sale investment securities	9,214		2,814,739		—		—		2,823,953
Gross derivative instruments, before netting (1)	498		21,510		—		—		22,008
Originated loans held for sale	—		17,137		—		—		17,137
Investments held in Rabbi Trust	4,930		—		—		—		4,930
Alternative investments	—		—		—		2,073		2,073
Total financial assets held at fair value	$	14,642	$	2,853,386	$	—	$	2,073	$	2,870,101
Financial liabilities held at fair value:
Gross derivative instruments, before netting (1)	$	462	$	83,427	$	—	$	—	$	83,889

	At December 31, 2017
(In thousands)	Level 1		Level 2		Level 3		NAV		Total
Financial assets held at fair value:
U.S. Treasury Bills	$	1,247	$	—	$	—	$	—	$	1,247
Agency CMO	—		306,333		—		—		306,333
Agency MBS	—		1,107,841		—		—		1,107,841
Agency CMBS	—		588,026		—		—		588,026
CMBS	—		361,067		—		—		361,067
CLO	—		209,851		—		—		209,851
Single issuer-trust preferred	—		7,050		—		—		7,050
Corporate debt	—		56,622		—		—		56,622
Total available-for-sale investment securities	1,247		2,636,790		—		—		2,638,037
Gross derivative instruments, before netting (1)	258		32,257		—		—		32,515
Originated loans held for sale	—		20,888		—		—		20,888
Investments held in Rabbi Trust	4,801		—		—		—		4,801
Alternative investments	—		—		—		3,495		3,495
Total financial assets held at fair value	$	6,306	$	2,689,935	$	—	$	3,495	$	2,699,736
Financial liabilities held at fair value:
Gross derivative instruments, before netting (1)	$	587	$	27,836	$	—	$	—	$	28,423

(1) For information relating to the impact of netting derivative assets and derivative liabilities as well as the impact from offsetting cash collateral paid to the same derivative counterparties see Note 12:Derivative Financial Instruments.

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Assets Measured at Fair Value on a Non-Recurring Basis

Certain assets are measured at fair value on a non-recurring basis; that is, the assets are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances, for example, when there is evidence of impairment. The following is a description of valuation methodologies used for assets measured on a non-recurring basis.

Alternative Investments. The measurement alternative has been elected for alternative investments without readily determinable fair values that do not qualify for the NAV practical expedient. The measurement alternative requires investments to be accounted for at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. These alternative investments are investments in non-public entities that generally cannot be redeemed since the investment is distributed as the underlying equity is liquidated. Accordingly, these alternative investments are classified within Level 2 of the fair value hierarchy. The carrying amount of these alternative investments was $3.6 million at September 30, 2018. No reduction for impairments, or adjustments due to observable price changes, was identified during the three or nine months ended September 30, 2018.

Transferred Loans Held For Sale. Certain loans are transferred to loans held for sale once a decision has been made to sell such loans. These loans are accounted for at the lower of cost or market and are considered to be recognized at fair value when they are recorded at below cost. This activity primarily consists of commercial loans with observable inputs and is classified within Level 2. On the occasion that these loans should include adjustments for changes in loan characteristics using unobservable inputs, the loans would be classified within Level 3.

Collateral Dependent Impaired Loans and Leases. Impaired loans and leases for which repayment is expected to be provided solely by the value of the underlying collateral are considered collateral dependent and are valued based on the estimated fair value of such collateral using customized discounting criteria. As such, collateral dependent impaired loans and leases are classified as Level 3 of the fair value hierarchy.

Other Real Estate Owned and Repossessed Assets. The total book value of other real estate owned (OREO) and repossessed assets was $5.3 million at September 30, 2018. OREO and repossessed assets are accounted for at the lower of cost or market and are considered to be recognized at fair value when they are recorded at below cost. The fair value of OREO is based on independent appraisals or internal valuation methods, less estimated selling costs. The valuation may consider available pricing guides, auction results, and price opinions. Certain assets require assumptions about factors that are not observable in an active market in the determination of fair value; as such, OREO and repossessed assets are classified within Level 3 of the fair value hierarchy.

At September 30, 2018, there were no significant assets measured at fair value on a non-recurring basis.Fair Value of Financial Instruments and Servicing Assets

The Company is required to disclose the estimated fair value of, financial instruments, both assets and liabilities, for which it is practicable to estimate fair value, as well as servicing assets. The following is a description of valuation methodologies used for those assets and liabilities.

Cash, Due from Banks, and Interest-bearing Deposits. The carrying amount of cash, due from banks, and interest-bearing deposits is used to approximate fair value, given the short time frame to maturity and, as such, these assets do not present unanticipated credit concerns. Cash, due from banks, and interest-bearing deposits are classified within Level 1 of the fair value hierarchy.

Held-to-Maturity Investment Securities. When quoted market prices are not available, the Company employs an independent pricing service that utilizes matrix pricing to calculate fair value. Such fair value measurements consider observable data such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayments speeds, credit information, and respective terms and conditions for debt instruments. Management maintains procedures to monitor the pricing service's results and establishes processes to challenge their valuations, or methodology, that appear unusual or unexpected. Held-to-Maturity investment securities, which include Agency CMO, Agency MBS, Agency CMBS, CMBS, municipal bonds and notes, and private label MBS securities, are classified within Level 2 of the fair value hierarchy.

Loans and Leases, net. The estimated fair value of loans and leases held for investment is calculated using a discounted cash flow method, using future prepayments and market interest rates inclusive of an illiquidity premium for comparable loans and leases. The associated cash flows are adjusted for credit and other potential losses. Fair value for impaired loans and leases is estimated using the net present value of the expected cash flows. Loans and leases are classified within Level 3 of the fair value hierarchy.

Deposit Liabilities. The fair value of demand deposits, savings accounts, and certain money market deposits is the amount payable on demand at the reporting date. Deposit liabilities are classified within Level 2 of the fair value hierarchy.

Time Deposits. The fair value of a fixed-maturity certificate of deposit is estimated using the rates currently offered for deposits of similar remaining maturities. Time deposits are classified within Level 2 of the fair value hierarchy.

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Securities Sold Under Agreements to Repurchase and Other Borrowings. The carrying value is an estimate of fair value for those securities sold under agreements to repurchase and other borrowings that mature within 90 days. Fair value of all other borrowings is estimated using discounted cash flow analysis based on current market rates adjusted, as appropriate, for associated credit risks. Securities sold under agreements to repurchase and other borrowings are classified within Level 2 of the fair value hierarchy.

Federal Home Loan Bank Advances and Long-Term Debt. The fair value of FHLB advances and long-term debt is estimated using a discounted cash flow technique. Discount rates are matched with the time period of the expected cash flow and are adjusted, as appropriate, to reflect credit risk. FHLB advances and long-term debt are classified within Level 2 of the fair value hierarchy.

Mortgage Servicing Assets. Mortgage servicing assets are accounted for at cost and subsequently measured under the amortization method. Mortgage servicing assets are subject to impairment testing and considered to be recognized at fair value when they are recorded at below cost. Amortization, and impairment charges, if any, are included as a component of other non-interest income in the accompanying Condensed Consolidated Statements of Income. Fair value is calculated as the present value of estimated future net servicing income and relies on market based assumptions for loan prepayment speeds, servicing costs, discount rates, and other economic factors; as such, the primary risk inherent in valuing mortgage servicing assets is the impact of fluctuating interest rates on the servicing revenue stream. Mortgage servicing assets are classified within Level 3 of the fair value hierarchy.

The estimated fair values of selected financial instruments and servicing assets are as follows:

	At September 30, 2018				At December 31, 2017
(In thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Level 2
Held-to-maturity investment securities	$	4,332,458	$	4,164,359	$	4,487,392	$	4,456,350
Level 3
Loans and leases, net	18,109,187		17,913,452		17,323,864		17,211,619
Mortgage servicing assets	22,644		48,661		25,139		45,309
Liabilities:
Level 2
Deposit liabilities	$	18,902,371	$	18,902,371	$	18,525,321	$	18,525,321
Time deposits	3,095,252		3,067,487		2,468,408		2,455,245
Securities sold under agreements to repurchase and other borrowings	564,488		564,396		643,269		644,084
FHLB advances	1,441,884		1,439,155		1,677,105		1,678,070
Long-term debt (1)	225,957		229,336		225,767		234,359

(1) Adjustments to the carrying amount of long-term debt for unamortized discount and debt issuance cost on senior fixed-rate notes are not included for determination of fair value, see Note 8:Borrowings.

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Note 14:Retirement Benefit Plans

Defined benefit pension and other postretirement benefits

The following table summarizes the components of net periodic benefit cost:

	Three months ended September 30,
	2018							2017
(In thousands)	Pension Plan			SERP		Other Benefits		Pension Plan			SERP		Other Benefits
Service cost	$	—		$	—	$	—	$	12		$	—	$	—
Interest cost on benefit obligations	1,857			35		20		1,829			96		19
Expected return on plan assets	(3,178		)	—		—		(3,074		)	—		—
Amortization of prior service cost	—			—		—		—			—		—
Recognized net loss	1,160			2,271		—		1,466			136		(15		)
Net periodic benefit cost	$	(161	)	$	2,306	$	20	$	233		$	232	$	4

	Nine months ended September 30,
	2018							2017
(In thousands)	Pension Plan			SERP		Other Benefits		Pension Plan			SERP		Other Benefits
Service cost	$	—		$	—	$	—	$	37		$	—	$	—
Interest cost on benefit obligations	5,577			201		59		5,486			281		69
Expected return on plan assets	(9,538		)	—		—		(9,222		)	—		—
Amortization of prior service cost	—			—		—		—			—		—
Recognized net loss	3,480			2,729		—		4,398			561		—
Net periodic benefit cost	$	(481	)	$	2,930	$	59	$	699		$	842	$	69

The components of net periodic benefit cost, other than the service cost component, are included as a component of other expense reflected in non-interest expense in the accompanying Condensed Consolidated Statements of Income.

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Note 15:Share-Based Plans

Stock compensation plans

Webster maintains stock compensation plans under which restricted stock, restricted stock units, non-qualified stock options, incentive stock options, or stock appreciation rights may be granted to employees and directors. The Company believes these share awards better align the interests of its employees with those of its shareholders. Stock compensation cost is recognized over the required service vesting period for the awards, based on the grant-date fair value, net of estimated forfeitures, and is included as a component of compensation and benefits reflected in non-interest expense.

Stock compensation expense of $2.7 million and $3.0 million for the three months ended September 30, 2018 and 2017, respectively, and $8.6 million and $9.1 million for the nine months ended September 30, 2018 and 2017, respectively, related to restricted stock awards, was recognized in the accompanying Condensed Consolidated Statements of Income.

At September 30, 2018 there was $16.4 million of unrecognized stock compensation expense for restricted stock expected to be recognized over a weighted-average period of 2.0 years.

The following table provides a summary of the stock compensation plans activity for the nine months ended September 30, 2018:

	Restricted Stock Awards Outstanding						Stock Options Outstanding
	Time-Based			Performance-Based
	Number of Shares	Weighted-Average Grant Date Fair Value		Number of Shares	Weighted-Average Grant Date Fair Value		Number  of Shares	Weighted-Average Exercise Price
Outstanding, at January 1, 2018	207,800	$	43.16	78,916	$	45.35	673,039	$	18.75
Granted	145,382	58.36		75,707	55.82		—	—
Vested restricted stock awards (1)	129,445	44.80		55,112	46.08		—	—
Forfeited	8,041	52.53		13,847	51.19		—	—
Exercised options	—	—		—	—		180,247	11.71
Outstanding and exercisable, at September 30, 2018	215,696	51.91		85,664	53.19		492,792	21.33

(1) Vested for purposes of recording compensation expense.

Time-based restricted stock. Time-based restricted stock awards vest over the applicable service period ranging from 1 to 3 years. The number of time-based awards that may be granted to an eligible individual in a calendar year is limited to 100,000 shares. Compensation expense is recorded over the vesting period based on a fair value, which is measured using the Company's common stock closing price at the date of grant.

Performance-based restricted stock. Performance-based restricted stock awards vest after a 3 year performance period. The awards vest with a share quantity dependent on that performance, in a range from 0 to 150%. The performance criteria for 50% of the shares granted in 2018 is based upon Webster's ranking for total shareholder return versus Webster's compensation peer group companies and the remaining 50% is based upon Webster's average of return on equity during the 3 year vesting period. The compensation peer group companies are utilized because they represent the financial institutions that best compare with Webster. The Company records compensation expense over the vesting period, based on a fair value calculated using the Monte-Carlo simulation model, which allows for the incorporation of the performance condition for the 50% of the performance-based shares tied to total shareholder return versus the compensation peer group, and based on a fair value of the market price on the date of grant for the remaining 50% of the performance-based shares tied to Webster's return on equity. Compensation expense is subject to adjustment based on management's assessment of Webster's return on equity performance relative to the target number of shares condition.

Stock options. Stock option awards have an exercise price equal to the market price of Webster Financial Corporation's stock on the date of grant. Each option grants the holder the right to acquire a share of Webster Financial Corporation common stock over a contractual life of up to 10 years. All awarded options have vested. There were 458,904 non-qualified stock options and 33,888 incentive stock options outstanding at September 30, 2018.

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Note 16:Segment Reporting

Webster’s operations are organized into three reportable segments that represent its primary businesses - Commercial Banking, HSA Bank, and Community Banking. These three segments reflect how executive management responsibilities are assigned, the primary businesses, the products and services provided, the type of customer served, and how discrete financial information is currently evaluated. The Corporate Treasury unit of the Company, along with the amounts required to reconcile profitability metrics to amounts reported in accordance with GAAP, are included in the Corporate and Reconciling category.

Description of Segment Reporting Methodology

Webster’s reportable segment results are intended to reflect each segment as if it were a stand-alone business. Webster uses an internal profitability reporting system to generate information by operating segment, which is based on a series of management estimates and allocations regarding funds transfer pricing, provision for loan and lease losses, non-interest expense, income taxes, and equity capital. These estimates and allocations, certain of which are subjective in nature, are periodically reviewed and refined. Changes in estimates and allocations that affect the reported results of any operating segment do not affect the consolidated financial position or results of operations of Webster as a whole. The full profitability measurement reports, which are prepared for each operating segment, reflect non-GAAP reporting methodologies. The differences between full profitability and GAAP results are reconciled in the Corporate and Reconciling category.

Webster allocates interest income and interest expense to each business, while also transferring the primary interest rate risk exposures to the Corporate and Reconciling category, using a matched maturity funding concept called Funds Transfer Pricing (FTP). The allocation process considers the specific interest rate risk and liquidity risk of financial instruments and other assets and liabilities in each line of business. The matched maturity funding concept considers the origination date and the earlier of the maturity date or the repricing date of a financial instrument to assign an FTP rate for loans and deposits originated each day. Loans are assigned an FTP rate for funds used and deposits are assigned an FTP rate for funds provided. This process is executed by the Company’s Financial Planning and Analysis division and is overseen by the Company's Asset/Liability Committee (ALCO).

Webster allocates the provision for loan and lease losses to each segment based on management’s estimate of the inherent loss content in each of the specific loan and lease portfolios.

Webster allocates a majority of non-interest expense to each reportable segment using a full-absorption costing process. Costs, including corporate overhead, are analyzed, pooled by process, and assigned to the appropriate reportable segment. A $10.0 million charge related to additional FDIC premiums pertaining to prior periods' deposit insurance assessments and related interest is included in the Corporate and Reconciling category for the nine months ended September 30, 2018. See Note 1 to the Condensed Consolidated Financial Statements included in Item 1 of this report for additional information.

Beginning in 2018, income tax expense is estimated for each reportable segment individually. The 2017 income tax expense was estimated for all segments using the consolidated effective tax rate. This change in the estimate of income tax expense reflects an estimate of full profitability for each of the individual business segments based on the nature of their operations.

The following table presents total assets for Webster's reportable segments and the Corporate and Reconciling category:

(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling		Consolidated Total
At September 30, 2018	$	10,327,878	$	71,172	$	8,730,295	$	8,216,972	$	27,346,317
At December 31, 2017	9,350,028		76,308		8,909,671		8,151,638		26,487,645

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The following tables present the operating results, including all appropriate allocations, for Webster’s reportable segments and the Corporate and Reconciling category:

	Three months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	91,243	$	36,731	$	101,952	$	446		$	230,372
Provision (benefit) for loan and lease losses	8,207		—		2,293		—			10,500
Net interest income (expense) after provision for loan and lease losses	83,036		36,731		99,659		446			219,872
Non-interest income	18,305		22,159		26,848		4,972			72,284
Non-interest expense	44,506		30,753		95,769		7,755			178,783
Income (loss) before income tax expense	56,835		28,137		30,738		(2,337		)	113,373
Income tax expense (benefit)	13,981		7,316		6,117		(13,714		)	13,700
Net income (loss)	$	42,854	$	20,821	$	24,621	$	11,377		$	99,673

	Three months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking			Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	81,925	$	26,713	$	96,859		$	(4,593	)	$	200,904
Provision (benefit) for loan and lease losses	12,073		—		(1,923		)	—			10,150
Net interest income (expense) after provision for loan and lease losses	69,852		26,713		98,782			(4,593		)	190,754
Non-interest income	13,207		19,371		27,079			6,189			65,846
Non-interest expense	38,339		27,222		92,478			3,784			161,823
Income (loss) before income tax expense	44,720		18,862		33,383			(2,188		)	94,777
Income tax expense (benefit)	14,363		6,006		10,605			(693		)	30,281
Net income (loss)	$	30,357	$	12,856	$	22,778		$	(1,495	)	$	64,496

	Nine months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	264,353	$	104,920	$	302,782	$	(2,505	)	$	669,550
Provision for loan and lease losses	26,300		—		5,700		—			32,000
Net interest income (expense) after provision for loan and lease losses	238,053		104,920		297,082		(2,505		)	637,550
Non-interest income	48,662		67,710		78,421		14,612			209,405
Non-interest expense	128,730		93,488		287,795		20,844			530,857
Income (loss) before income tax expense	157,985		79,142		87,708		(8,737		)	316,098
Income tax expense (benefit)	38,864		20,577		17,454		(22,377		)	54,518
Net income	$	119,121	$	58,565	$	70,254	$	13,640		$	261,580

	Nine months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking			Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	239,118	$	76,339	$	286,351		$	(10,453	)	$	591,355
Provision (benefit) for loan and lease losses	29,562		—		(1,662		)	—			27,900
Net interest income (expense) after provision for loan and lease losses	209,556		76,339		288,013			(10,453		)	563,455
Non-interest income	39,163		58,392		80,516			15,368			193,439
Non-interest expense	113,767		84,211		281,979			10,069			490,026
Income (loss) before income tax expense	134,952		50,520		86,550			(5,154		)	266,868
Income tax expense (benefit)	41,125		15,395		26,374			(1,572		)	81,322
Net income (loss)	$	93,827	$	35,125	$	60,176		$	(3,582	)	$	185,546

38

Note 17:Revenue from Contracts with Customers

The Company adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606), and the subsequent clarifying ASUs, effective January 1, 2018. The Updates are applicable to the Company's deposit service fees, wealth and investment services, and an insignificant component of other income included within non-interest income in the accompanying Condensed Consolidated Statements of Income.

The Company's revenue associated with net interest income, and certain non-interest income line items (loan and lease related fees, mortgage banking activities, increase in cash surrender value of life insurance policies, gain on sale of investment securities, net, impairment loss on securities recognized in earnings, and a majority of other income), are not within the scope of Topic 606. As a result, a substantial amount of the Company's revenue is not affected.

Under the updated guidance, for in-scope revenue streams, the Company identifies the performance obligations included in the contracts with customers, determines the transaction price, allocates the transaction price to the performance, as applicable, and recognizes revenue when performance obligations are satisfied. The Company's existing recognition practices are largely consistent with the updated guidance.

The following tables present the disaggregation by operating segment and major revenue stream, with disaggregated revenue reconciled to segment revenue as presented in Note 16:Segment Reporting:

	Three months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	3,211	$	21,294	$	16,107	$	(11	)	$	40,601
Wealth and investment services	2,577		—		5,843		(8		)	8,412
Other income	—		865		352		—			1,217
Revenue from contracts with customers	5,788		22,159		22,302		(19		)	50,230
Non-interest income within the scope of other GAAP topics	12,517		—		4,546		4,991			22,054
Total non-interest income	$	18,305	$	22,159	$	26,848	$	4,972		$	72,284

	Three months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	3,119	$	18,658	$	16,435	$	109		$	38,321
Wealth and investment services	2,471		—		5,288		(9		)	7,750
Other income	—		713		216		—			929
Revenue from contracts with customers	5,590		19,371		21,939		100			47,000
Non-interest income within the scope of other GAAP topics	7,617		—		5,140		6,089			18,846
Total non-interest income	$	13,207	$	19,371	$	27,079	$	6,189		$	65,846

39

	Nine months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	9,613	$	65,112	$	47,079	$	107		$	121,911
Wealth and investment services	7,703		—		17,060		(25		)	24,738
Other income	—		2,598		1,485		—			4,083
Revenue from contracts with customers	17,316		67,710		65,624		82			150,732
Non-interest income within the scope of other GAAP topics	31,346		—		12,797		14,530			58,673
Total non-interest income	$	48,662	$	67,710	$	78,421	$	14,612		$	209,405

	Nine months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	9,012	$	56,176	$	48,046	$	285		$	113,519
Wealth and investment services	7,288		—		15,638		(26		)	22,900
Other income	—		2,216		603		—			2,819
Revenue from contracts with customers	16,300		58,392		64,287		259			139,238
Non-interest income within the scope of other GAAP topics	22,863		—		16,229		15,109			54,201
Total non-interest income	$	39,163	$	58,392	$	80,516	$	15,368		$	193,439

Deposit service fees

Deposit service fees predominately consist of fees earned from deposit accounts and interchange revenue. Fees earned from deposit accounts relate to event-driven services and periodic account maintenance activities. Webster's obligations for event-driven services are satisfied at the time the service is delivered, while the obligations for maintenance services is satisfied monthly. Interchange fees are assessed as the performance obligation is satisfied, which is at the point in time the card transaction is authorized.

Wealth and investment services

Wealth and investment services consists of fees earned from investment and securities-related services, trust and other related services. Obligations for wealth and investment services are generally satisfied over time through a time-based measurement of progress, but certain obligations may be satisfied at points in time for activities that are transactional in nature.

40

Note 18:Commitments and Contingencies

Credit-Related Financial Instruments

The Company offers credit-related financial instruments in the normal course of business to meet certain financing needs of its customers, that involve off-balance sheet risk. These transactions may include an unused commitment to extend credit, standby letter of credit, or commercial letter of credit. Such transactions involve, to varying degrees, elements of credit risk.

The following table summarizes the outstanding amounts of credit-related financial instruments with off-balance sheet risk:

(In thousands)	At September 30, 2018		At December 31, 2017
Commitments to extend credit	$	5,683,275	$	5,567,687
Standby letter of credit	185,859		195,902
Commercial letter of credit	36,393		43,200
Total credit-related financial instruments with off-balance sheet risk	$	5,905,527	$	5,806,789

Commitments to Extend Credit. The Company makes commitments under various terms to lend funds to customers at a future point in time. These commitments include revolving credit arrangements, term loan commitments, and short-term borrowing agreements. Most of these loans have fixed expiration dates or other termination clauses where a fee may be required. Since commitments routinely expire without being funded, or after required availability of collateral occurs, the total commitment amount does not necessarily represent future liquidity requirements.

Standby Letter of Credit. A standby letter of credit commits the Company to make payments on behalf of customers if certain specified future events occur. The Company has recourse against the customer for any amount required to be paid to a third party under a standby letter of credit, which is often part of a larger credit agreement under which security is provided. Historically, a large percentage of standby letters of credit expire without being funded. The contractual amount of a standby letter of credit represents the maximum amount of potential future payments the Company could be required to make, and is the Company's maximum credit risk.

Commercial Letter of Credit. A commercial letter of credit is issued to facilitate either domestic or foreign trade arrangements for customers. As a general rule, drafts are committed to be drawn when the goods underlying the transaction are in transit. Similar to a standby letter of credit, a commercial letter of credit is often secured by an underlying security agreement including the assets or inventory to which they relate.

These commitments subject the Company to potential exposure in excess of the amounts recorded in the financial statements, and therefore, management maintains a specific reserve for unfunded credit commitments. This reserve is reported as a component of accrued expenses and other liabilities in the accompanying Condensed Consolidated Balance Sheets.

The following table provides a summary of activity in the reserve for unfunded credit commitments:

	Three months ended September 30,				Nine months ended September 30,
(In thousands)	2018		2017		2018		2017
Beginning balance	$	2,596	$	2,544	$	2,362	$	2,287
Provision charged to expense	28		—		262		257
Ending balance	$	2,624	$	2,544	$	2,624	$	2,544

Litigation

Webster is involved in routine legal proceedings occurring in the ordinary course of business and is subject to loss contingencies related to such litigation and claims arising therefrom. Webster evaluates these contingencies based on information currently available, including advice of counsel and assessment of available insurance coverage. Webster establishes an accrual for litigation and claims when a loss contingency is considered probable and the related amount is reasonably estimable. This accrual is periodically reviewed and may be adjusted as circumstances change. Webster also estimates certain loss contingencies for possible litigation and claims, whether or not there is an accrued probable loss. Webster believes it has defenses to all the claims asserted against it in existing litigation matters and intends to defend itself in all matters.

Based upon its current knowledge, after consultation with counsel and after taking into consideration its current litigation accrual, Webster believes that at September 30, 2018 any reasonably possible losses, in addition to amounts accrued, are not material to Webster’s consolidated financial condition. However, in light of the uncertainties involved in such actions and proceedings, there is no assurance that the ultimate resolution of these matters will not significantly exceed the amounts currently accrued by Webster or that the Company’s litigation accrual will not need to be adjusted in future periods. Such an outcome could be material to the Company’s operating results in a particular period, depending on, among other factors, the size of the loss or liability imposed and the level of the Company’s income for that period.

41

Note 19:Subsequent Events

The Company has evaluated events from the date of the Condensed Consolidated Financial Statements and accompanying Notes thereto, September 30, 2018, through the issuance of this Quarterly Report on Form 10-Q and determined that no significant events were identified requiring recognition or disclosure, except as identified below.

The sale of six banking center locations closed on October 5, 2018. Deposits of approximately $105 million were transfered with the banking centers, while the Company retained lending and investment services relationships.

42

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion should be read in conjunction with the Company’s Consolidated Financial Statements and Notes thereto, for the year ended December 31, 2017, included in the Company's Annual Report on Form 10-K, filed with the SEC on March 1, 2018, and in conjunction with the Condensed Consolidated Financial Statements and Notes thereto included in Item 1 of this report. Operating results for the nine months ended September 30, 2018 are not necessarily indicative of the results for the full year ending December 31, 2018, or any future period.

Regulatory Developments

On May 24, 2018, the President signed into law the Economic Growth, Regulatory Relief, and Consumer Protection Act (the EGRRCPA) which, among other things, amended certain provisions of the Dodd-Frank Act. The EGRRCPA provides limited regulatory relief to certain financial institutions while preserving the existing framework under which U.S. financial institutions are regulated. Together with the interagency statement regarding the impact of the EGRRCPA released by the FRB, the FDIC, and the OCC on July 6, 2018, the EGRRCPA relieves the Company from the requirement to conduct annual company-run stress testing for the Company and Webster Bank. In addition to amending the Dodd Frank Act, the EGRRCPA also includes certain additional banking-related, consumer protection, and securities law-related provisions. The Company expects to continue to evaluate the potential impact of the EGRRCPA as it is further implemented by the regulators.  

Application of Critical Accounting Policies and Accounting Estimates

The Company’s significant accounting policies are described in Note 1 to the Consolidated Financial Statements included in its 2017 Annual Report on Form 10-K. Modifications to significant accounting policies made during the year are described in Note 1 to the Condensed Consolidated Financial Statements included in Item 1 of this report. The preparation of the Condensed Consolidated Financial Statements in accordance with GAAP and practices generally applicable to the financial services industry requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses, and to disclose contingent assets and liabilities. Actual results could differ from those estimates.

Management has identified the Company's most critical accounting policies as:

• allowance for loan and lease losses;

• fair value measurements for valuation of investments;

• evaluation for impairment of goodwill; and

• assessing the realizability of deferred tax assets and the measurement of uncertain tax positions.

These particular significant accounting policies are considered most critical in that they are important to the Company’s financial condition and results, and they require management’s subjective and complex judgment as a result of the need to make estimates about the effects of matters that are inherently uncertain. The accounting policies and estimates, including the nature of the estimates and types of assumptions used, are described throughout Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations included in Webster's 2017 Form 10-K, and Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations, of this report.

43

Results of Operations

Selected financial highlights are presented in the following table:

	At or for the three months ended September 30,						At or for the nine months ended September 30,
(In thousands, except per share and ratio data)	2018			2017			2018			2017
Earnings:
Net interest income	$	230,372		$	200,904		$	669,550		$	591,355
Provision for loan and lease losses	10,500			10,150			32,000			27,900
Total non-interest income	72,284			65,846			209,405			193,439
Total non-interest expense	178,783			161,823			530,857			490,026
Net income	99,673			64,496			261,580			185,546
Earnings applicable to common shareholders	97,460			62,426			255,040			179,262
Share Data:
Weighted-average common shares outstanding - diluted	92,208			92,503			92,221			92,412
Diluted earnings per common share	$	1.06		$	0.67		$	2.77		$	1.94
Dividends and dividend equivalents declared per common share	0.33			0.26			0.92			0.77
Dividends declared per preferred share	328.13			400.00			995.31			1,200.00
Book value per common share	28.96			27.34			28.96			27.34
Tangible book value per common share (non-GAAP)	22.83			21.16			22.83			21.16
Selected Ratios:
Net interest margin	3.61		%	3.30		%	3.54		%	3.27		%
Return on average assets (annualized basis)	1.47			0.98			1.30			0.95
Return on average common shareholders' equity (annualized basis)	14.74			9.95			13.05			9.67
CET1 risk-based capital	11.23			10.99			11.23			10.99
Tangible common equity ratio (non-GAAP)	7.86			7.55			7.86			7.55
Return on average tangible common shareholders' equity (annualized basis) (non-GAAP)	18.88			12.99			16.81			12.71
Efficiency ratio (non-GAAP)	57.41			59.18			58.29			60.62

Providing the non-GAAP financial measures identified in the preceding table provide investors with information useful in understanding the Company's financial performance, performance trends and financial position. These measures are used by management for internal planning and forecasting purposes, as well as by securities analysts, investors and other interested parties to compare peer company operating performance. Management believes that the presentation, together with the accompanying reconciliations provides a complete understanding of the factors and trends affecting the Company's business and allows investors to view its performance in a similar manner. These non-GAAP financial measures should not be considered a substitute for GAAP basis measures and results. Because non-GAAP financial measures are not standardized, it may not be possible to compare these measures with other companies that present measures having the same or similar names.

44

The following tables reconcile the non-GAAP financial measures with financial measures defined by GAAP:

	At September 30,
(Dollars and shares in thousands, except per share data)	2018			2017
Tangible book value per common share (non-GAAP):
Shareholders' equity (GAAP)	$	2,816,198		$	2,638,787
Less: Preferred stock (GAAP)	145,037			122,710
Goodwill and other intangible assets (GAAP)	565,099			568,962
Tangible common shareholders' equity (non-GAAP)	$	2,106,062		$	1,947,115
Common shares outstanding	92,230			92,034
Tangible book value per common share (non-GAAP)	$	22.83		$	21.16
Tangible common equity ratio (non-GAAP):
Tangible common shareholders' equity (non-GAAP)	$	2,106,062		$	1,947,115
Total Assets (GAAP)	$	27,346,317		$	26,350,182
Less: Goodwill and other intangible assets (GAAP)	565,099			568,962
Tangible assets (non-GAAP)	$	26,781,218		$	25,781,220
Tangible common equity ratio (non-GAAP)	7.86		%	7.55		%

	Three months ended September 30,						Nine months ended September 30,
(Dollars in thousands)	2018			2017			2018			2017
Return on average tangible common shareholders' equity (non-GAAP):
Net income (GAAP)	$	99,673		$	64,496		$	261,580		$	185,546
Less: Preferred stock dividends (GAAP)	1,968			2,024			5,884			6,072
Add: Intangible assets amortization, tax-effected (GAAP)	759			651			2,279			2,005
Income adjusted for preferred stock dividends and intangible assets amortization (non-GAAP)	$	98,464		$	63,123		$	257,975		$	181,479
Income adjusted for preferred stock dividends and intangible assets amortization, annualized (non-GAAP)	$	393,856		$	252,492		$	343,967		$	241,972
Average shareholders' equity (non-GAAP)	$	2,796,809		$	2,635,312		$	2,758,190		$	2,597,574
Less: Average preferred stock (non-GAAP)	145,037			122,710			145,078			122,710
Average goodwill and other intangible assets (non-GAAP)	565,559			569,538			566,535			570,562
Average tangible common shareholders' equity (non-GAAP)	$	2,086,213		$	1,943,064		$	2,046,577		$	1,904,302
Return on average tangible common shareholders' equity (non-GAAP)	18.88		%	12.99		%	16.81		%	12.71		%
Efficiency ratio (non-GAAP):
Non-interest expense (GAAP)	$	178,783		$	161,823		$	530,857		$	490,026
Less: Foreclosed property activity (GAAP)	(309		)	(72		)	(330		)	(141		)
Intangible assets amortization (GAAP)	961			1,002			2,885			3,085
Other expense (non-GAAP) (1)	2,959			213			11,558			2,923
Non-interest expense (non-GAAP)	$	175,172		$	160,680		$	516,744		$	484,159
Net interest income (GAAP)	$	230,372		$	200,904		$	669,550		$	591,355
Add: Tax-equivalent adjustment (non-GAAP)	2,172			4,340			6,619			12,509
Non-interest income (GAAP)	72,284			65,846			209,405			193,439
Other (non-GAAP) (1)	308			431			962			1,377
Income (non-GAAP)	$	305,136		$	271,521		$	886,536		$	798,680
Efficiency ratio (non-GAAP)	57.41		%	59.18		%	58.29		%	60.62		%

(1) Other expense includes facility optimization charges, while other income includes low income housing tax credits and impairment loss on investment securities. In addition, other expense amounts for the three and nine months ended September 30, 2018 include a charge relating to additional FDIC premiums for the period June 30, 2015 through December 31, 2017.

45

Financial Performance

Comparison to Prior Year Quarter

For the three months ended September 30, 2018, income before income tax expense of $113.4 million increased $18.6 million, or 19.6%, compared to the three months ended September 30, 2017. Net interest income increased 14.7%, the provision for loan and lease losses increased 3.4%, non-interest income increased 9.8%, and non-interest expense increased 10.5%.

After income tax expense of $13.7 million and $30.3 million for the three months ended September 30, 2018 and 2017, respectively, net income was $99.7 million and diluted earnings per share was $1.06 for the three months ended September 30, 2018 compared to net income of $64.5 million and diluted earnings per share of $0.67 for the three months ended September 30, 2017.

Comparison to Prior Year to Date

For the nine months ended September 30, 2018, income before income tax expense of $316.1 million increased $49.2 million, or 18.4%, compared to the nine months ended September 30, 2017. Net interest income increased 13.2%, the provision for loan and lease losses increased 14.7%, non-interest income increased 8.3%, and non-interest expense increased 8.3%.

After income tax expense of $54.5 million and $81.3 million for the nine months ended September 30, 2018 and 2017, respectively, net income was $261.6 million and diluted earnings per share was $2.77 for the nine months ended September 30, 2018 compared to net income of $185.5 million and diluted earnings per share of $1.94 for the nine months ended September 30, 2017.

46

The following tables summarize daily average balances, interest, yield/rate, and net interest margin on a fully tax-equivalent basis:

	Three months ended September 30,
	2018							2017
(Dollars in thousands)	Average Balance		Interest			Yield/ Rate		Average Balance		Interest			Yield/ Rate
Assets
Interest-earning assets:
Loans and leases	$	18,060,842	$	216,065		4.71	%	$	17,364,519	$	182,269		4.14	%
Investment securities (based upon historical amortized cost)	7,104,625		52,342			2.91		6,994,661		51,130			2.92
FHLB and FRB stock	126,558		1,586			4.97		135,943		1,482			4.33
Interest-bearing deposits	72,157		334			1.81		58,193		173			1.17
Loans held for sale	20,291		208			4.10		34,939		307			3.51
Total interest-earning assets	25,384,473		$	270,535		4.20	%	24,588,255		$	235,361		3.78	%
Non-interest-earning assets	1,663,012							1,721,591
Total Assets	$	27,047,485						$	26,309,846
Liabilities and Shareholders' Equity
Interest-bearing liabilities:
Demand deposits	$	4,257,448	$	—		—	%	$	4,201,723	$	—		—	%
Health savings accounts	5,576,417		2,793			0.20		4,870,620		2,449			0.20
Interest-bearing checking, money market and savings	9,135,736		9,827			0.43		9,707,053		7,780			0.32
Time deposits	2,935,663		11,777			1.59		2,155,743		6,531			1.20
Total deposits	21,905,264		24,397			0.44		20,935,139		16,760			0.32
Securities sold under agreements to repurchase and other borrowings	729,154		3,084			1.66		904,854		3,847			1.66
FHLB advances	1,155,768		7,685			2.60		1,362,165		6,894			1.98
Long-term debt	225,926		2,825			5.00		225,673		2,616			4.64
Total borrowings	2,110,848		13,594			2.53		2,492,692		13,357			2.11
Total interest-bearing liabilities	24,016,112		$	37,991		0.63	%	23,427,831		$	30,117		0.51	%
Non-interest-bearing liabilities	234,564							246,703
Total liabilities	24,250,676							23,674,534
Preferred stock	145,037							122,710
Common shareholders' equity	2,651,772							2,512,602
Total shareholders' equity	2,796,809							2,635,312
Total Liabilities and Shareholders' Equity	$	27,047,485						$	26,309,846
Tax-equivalent net interest income			$	232,544						$	205,244
Less: Tax-equivalent adjustments			(2,172		)					(4,340		)
Net interest income			$	230,372						$	200,904
Net interest margin						3.61	%						3.30	%

47

	Nine months ended September 30,
	2018							2017
(Dollars in thousands)	Average Balance		Interest			Yield/ Rate		Average Balance		Interest			Yield/ Rate
Assets
Interest-earning assets:
Loans and leases	$	17,901,888	$	618,419		4.58	%	$	17,225,217	$	526,419		4.05	%
Investment securities (based upon historical amortized cost)	7,135,037		157,108			2.91		7,031,738		157,550			2.98
FHLB and FRB stock	130,947		4,587			4.68		160,911		4,732			3.93
Interest-bearing deposits	63,807		782			1.62		63,684		472			0.98
Loans held for sale	17,292		498			3.84		31,373		826			3.51
Total interest-earning assets	25,248,971		$	781,394		4.09	%	24,512,923		$	689,999		3.73	%
Non-interest-earning assets	1,645,331							1,666,080
Total Assets	$	26,894,302						$	26,179,003
Liabilities and Shareholders' Equity
Interest-bearing liabilities:
Demand deposits	$	4,177,004	$	—		—	%	$	4,039,738	$	—		—	%
Health savings accounts	5,508,325		8,152			0.20		4,810,038		7,133			0.20
Interest-bearing checking, money market and savings	9,172,498		25,399			0.37		9,505,187		19,599			0.28
Time deposits	2,710,917		29,227			1.44		2,079,021		18,142			1.17
Total deposits	21,568,744		62,778			0.39		20,433,984		44,874			0.29
Securities sold under agreements to repurchase and other borrowings	824,203		10,722			1.72		884,975		10,970			1.63
FHLB advances	1,288,410		23,437			2.40		1,829,175		22,543			1.63
Long-term debt	225,863		8,288			4.89		225,607		7,748			4.58
Total borrowings	2,338,476		42,447			2.40		2,939,757		41,261			1.85
Total interest-bearing liabilities	23,907,220		$	105,225		0.59	%	23,373,741		$	86,135		0.49	%
Non-interest-bearing liabilities	228,892							207,688
Total liabilities	24,136,112							23,581,429
Preferred stock	145,078							122,710
Common shareholders' equity	2,613,112							2,474,864
Total shareholders' equity	2,758,190							2,597,574
Total Liabilities and Shareholders' Equity	$	26,894,302						$	26,179,003
Tax-equivalent net interest income			$	676,169						$	603,864
Less: Tax-equivalent adjustments			(6,619		)					(12,509		)
Net interest income			$	669,550						$	591,355
Net interest margin						3.54	%						3.27	%

48

Net interest income and net interest margin are impacted by the level of interest rates, mix of assets earning and liabilities paying those interest rates, and the volume of interest-earning assets and interest-bearing liabilities. These conditions are influenced by changes in economic conditions that impact interest rate policy, competitive conditions that impact loan and deposit pricing strategies, as well as the extent of interest lost to non-performing assets.

Net interest income is the difference between interest income on earning assets, such as loans and investments, and interest expense on liabilities, such as deposits and borrowings, which are used to fund those assets. Net interest income is the Company's largest source of revenue, representing 76.2% of total revenue for the nine months ended September 30, 2018. Net interest margin is the ratio of tax-equivalent net interest income to average earning assets for the period.

Webster manages the risk of changes in interest rates on net interest income and net interest margin through ALCO and through related interest rate risk monitoring and management policies. ALCO meets at least monthly to make decisions on the investment and funding portfolios based on the economic outlook, its interest rate expectations, the portfolio risk position, and other factors.

Four main tools are used for managing interest rate risk:

• the size, duration and credit risk of the investment portfolio;

• the size and duration of the wholesale funding portfolio;

• off-balance sheet interest rate contracts; and

• the pricing and structure of loans and deposits.

The Federal Open Market Committee has gradually raised the federal funds rate target range eight times since December 31, 2015. Effective September 27, 2018, the target range was increased to 2.00-2.25% as compared to 1.25-1.50% at December 31, 2017. See the "Asset/Liability Management and Market Risk" section for further discussion of Webster’s interest rate risk position.

Net Interest Income

Comparison to Prior Year Quarter

Net interest income totaled $230.4 million for the three months ended September 30, 2018 compared to $200.9 million for the three months ended September 30, 2017, an increase of $29.5 million.

Net interest margin increased 31 basis points to 3.61% for the three months ended September 30, 2018 from 3.30% for the three months ended September 30, 2017. On a fully tax-equivalent basis, net interest income increased $27.3 million when compared to the same period in 2017. The increase for the three months ended September 30, 2018 was primarily the result of strong loan growth at increased yields, partially offset by an increase in the cost of deposits other than health savings accounts.

Comparison to Prior Year to Date

Net interest income totaled $669.6 million for the nine months ended September 30, 2018 compared to $591.4 million for the nine months ended September 30, 2017, an increase of $78.2 million.

Net interest margin increased 27 basis points to 3.54% for the nine months ended September 30, 2018 from 3.27% for the nine months ended September 30, 2017. On a fully tax-equivalent basis, net interest income increased $72.3 million when compared to the same period in 2017. The increase for the nine months ended September 30, 2018 was primarily the result of strong loan growth at increased yields, partially offset by an increase in the cost of deposits other than health savings accounts.

49

Changes in Net Interest Income

The following table presents the components of the change in net interest income attributable to changes in rate and volume, and reflects net interest income on a fully tax-equivalent basis:

	Three months ended September 30,								Nine months ended September 30,
	2018 vs. 2017 Increase (decrease) due to								2018 vs. 2017 Increase (decrease) due to
(In thousands)	Rate (1)		Volume			Total			Rate (1)			Volume			Total
Interest on interest-earning assets:
Loans and leases	$	25,611	$	8,185		$	33,796		$	69,318		$	22,681		$	91,999
Loans held for sale	30		(128		)	(98		)	44			(371		)	(327		)
Investments (2)	872		604			1,476			(1,956		)	1,679			(277		)
Total interest income	$	26,513	$	8,661		$	35,174		$	67,406		$	23,989		$	91,395
Interest on interest-bearing liabilities:
Deposits	$	5,650	$	1,987		$	7,637		$	12,873		$	5,031		$	17,904
Borrowings	2,401		(2,164		)	237			9,496			(8,310		)	1,186
Total interest expense	$	8,051	$	(177	)	$	7,874		$	22,369		$	(3,279	)	$	19,090
Net change in net interest income	$	18,462	$	8,838		$	27,300		$	45,037		$	27,268		$	72,305

(1) The change attributable to mix, a combined impact of rate and volume, is included with the change due to rate.

(2) Investments include: Investment securities, FHLB and FRB stock, and Interest-bearing deposits.

Average loans and leases for the nine months ended September 30, 2018 increased $0.7 billion compared to the average for the nine months ended September 30, 2017. The loan and lease portfolio comprised 70.9% of the average interest-earning assets at September 30, 2018 compared to 70.3% of the average interest-earning assets at September 30, 2017. The loan and lease portfolio yield increased 53 basis points to 4.58% for the nine months ended September 30, 2018 compared to the loan and lease portfolio yield of 4.05% for the nine months ended September 30, 2017. The increase in the yield on the average loan and lease portfolio is due to variable rate loans resetting higher. Additionally, rising interest rates resulted in a reduction in variable rate loans at their floors.

Average investments for the nine months ended September 30, 2018 increased $73.5 million compared to the average for the nine months ended September 30, 2017. The investments portfolio comprised 29.0% of the average interest-earning assets at September 30, 2018 compared to 29.6% of the average interest-earning assets at September 30, 2017. The investments portfolio yield decreased 3 basis points to 2.96% for the nine months ended September 30, 2018 compared to the investments portfolio yield of 2.99% for the nine months ended September 30, 2017. The decrease in investments portfolio yield is primarily due to the negative effect from the Tax Act on tax exempt securities.

Average total deposits for the nine months ended September 30, 2018 increased $1.1 billion compared to the average for the nine months ended September 30, 2017. The increase is comprised of an increase of $0.1 billion in non-interest-bearing deposits and an increase of $1.0 billion in interest-bearing deposits. The increase in average interest-bearing deposits was primarily due to health savings account deposit and time deposit growth. The average cost of deposits increased 10 basis points to 0.39% for the nine months ended September 30, 2018 from 0.29% for the nine months ended September 30, 2017. The average cost of deposits increased due to a change in mix from an increase in certificate of deposit accounts as well as selected deposit product rate increases. Higher cost time deposits increased, to 15.6% for the nine months ended September 30, 2018 from 12.7% for the nine months ended September 30, 2017, as a percentage to total interest-bearing deposits.

Average total borrowings for the nine months ended September 30, 2018 decreased $601.3 million compared to the average for the nine months ended September 30, 2017. Average securities sold under agreements to repurchase and other borrowings decreased $60.8 million, and average FHLB advances decreased $540.8 million as utilization of advances maturing within one year declined. The average cost of borrowings increased 55 basis points to 2.40% for the nine months ended September 30, 2018 from 1.85% for the nine months ended September 30, 2017. The increase in average cost of borrowings was primarily due to increases in the federal funds rate.

Cash flow hedges impacted the average cost of borrowings as follows:

	Three months ended September 30,				Nine months ended September 30,
(In thousands)	2018		2017		2018		2017
Interest rate swaps on FHLB advances	$	1,513	$	1,657	$	4,656	$	5,139
Interest rate swaps on senior fixed-rate notes	76		76		229		229
Interest rate swaps on brokered/certificates of deposits	78		195		273		585
Net increase to interest expense on borrowings	$	1,667	$	1,928	$	5,158	$	5,953

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Provision for Loan and Lease Losses

The provision for loan and lease losses is the expense necessary to maintain the allowance for loan and lease losses at levels appropriate to absorb estimated credit losses in the loan and lease portfolio.

Comparison to Prior Year Quarter

The provision for loan and lease losses was $10.5 million for the three months ended September 30, 2018, which increased $0.4 million compared to the three months ended September 30, 2017. The increase in provision for loan and lease losses was primarily due to loan growth. Total net charge-offs was $6.0 million and $7.9 million for the three months ended September 30, 2018 and 2017, respectively. The decrease in net charge-offs was primarily due to consumer lending activity.

Comparison to Prior Year to Date

The provision for loan and lease losses was $32.0 million for the nine months ended September 30, 2018, which increased $4.1 million compared to the nine months ended September 30, 2017. The increase in provision for loan and lease losses was primarily due to loan growth. Total net charge-offs was $20.2 million and $20.4 million for the nine months ended September 30, 2018 and 2017, respectively. The decrease in net charge-offs was primarily due to consumer lending activity.

Allowance for Loan and Lease Losses

The ALLL is a significant accounting estimate that is determined through periodic and systematic detailed reviews of the Company's loan and lease portfolio. The ALLL is determined based on an analysis which assesses the inherent risk for probable losses within the portfolio. Significant judgments and estimates are necessary in the determination of the ALLL. Significant judgments include, among others, loan risk ratings and classifications, the probability of loan defaults, the net loss exposure in the event of loan defaults, the loss emergence period, the determination and measurement of impaired loans, and other quantitative and qualitative considerations.

At September 30, 2018, the ALLL totaled $211.8 million, or 1.16% of total loans and leases, as compared to $200.0 million, or 1.14% of total loans and leases, at December 31, 2017.

See the "Loans and Leases" through "Allowance for Loan and Lease Losses Methodology" sections for further details.

51

Non-Interest Income

	Three months ended September 30,									Nine months ended September 30,
					Increase (decrease)										Increase (decrease)
(Dollars in thousands)	2018		2017		Amount			Percent		2018		2017			Amount			Percent
Deposit service fees	$	40,601	$	38,321	$	2,280		5.9	%	$	121,911	$	113,519		$	8,392		7.4	%
Loan and lease related fees	10,782		6,346		4,436			69.9		24,111		19,898			4,213			21.2
Wealth and investment services	8,412		7,750		662			8.5		24,738		22,900			1,838			8.0
Mortgage banking activities	1,305		2,421		(1,116		)	(46.1	)	3,684		8,038			(4,354		)	(54.2	)
Increase in cash surrender value of life insurance policies	3,706		3,720		(14		)	(0.4	)	10,921		10,943			(22		)	(0.2	)
Impairment loss on investment securities recognized in earnings	—		—		—			—		—		(126		)	126			100.0
Other income	7,478		7,288		190			2.6		24,040		18,267			5,773			31.6
Total non-interest income	$	72,284	$	65,846	$	6,438		9.8		$	209,405	$	193,439		$	15,966		8.3

Comparison to Prior Year Quarter

Total non-interest income for the three months ended September 30, 2018 was $72.3 million, an increase of $6.4 million, or 9.8%, compared to $65.8 million for the three months ended September 30, 2017. The increase is primarily attributable to higher deposit service fees and loan and lease related fees, slightly offset by lower mortgage banking activities.

Deposit service fees totaled $40.6 million for the three months ended September 30, 2018, compared to $38.3 million for the three months ended September 30, 2017. The increase was a result of higher check card interchange and account service charges driven by health savings account growth.

Loan and lease related fees totaled $10.8 million for the three months ended September 30, 2018, compared to $6.3 million for the three months ended September 30, 2017. The increase was a result of higher loan syndication fees.

Mortgage banking activities totaled $1.3 million for the three months ended September 30, 2018, compared to $2.4 million for the three months ended September 30, 2017. The decrease was a result of lower originations.

Comparison to Prior Year to Date

Total non-interest income for the nine months ended September 30, 2018 was $209.4 million, an increase of $16.0 million, or 8.3%, compared to $193.4 million for the nine months ended September 30, 2017. The increase is primarily attributable to higher deposit service fees, loan and lease related fees, and other income, somewhat offset by lower mortgage banking activities.

Deposit service fees totaled $121.9 million for the nine months ended September 30, 2018, compared to $113.5 million for the nine months ended September 30, 2017. The increase was a result of increased checking account service charges, and higher check card interchange and account service charges driven by health savings account growth and usage activity.

Loan and lease related fees totaled $24.1 million for the nine months ended September 30, 2018, compared to $19.9 million for the nine months ended September 30, 2017. The increase was a result of higher loan syndication fees.

Mortgage banking activities totaled $3.7 million for the nine months ended September 30, 2018, compared to $8.0 million for the nine months ended September 30, 2017. The decrease was a result of lower originations and lower volume in loans held for sale.

Other income totaled $24.0 million for the nine months ended September 30, 2018, compared to $18.3 million for the nine months ended September 30, 2017. The increase was due to an increase in treasury derivative gains and break-funding revenue.

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Non-Interest Expense

	Three months ended September 30,									Nine months ended September 30,
					Increase (decrease)									Increase (decrease)
(Dollars in thousands)	2018		2017		Amount			Percent		2018		2017		Amount			Percent
Compensation and benefits	$	96,640	$	88,395	$	8,245		9.3	%	$	284,457	$	262,288	$	22,169		8.5	%
Occupancy	14,502		14,744		(242		)	(1.6	)	45,489		46,957		(1,468		)	(3.1	)
Technology and equipment	24,553		22,580		1,973			8.7		73,019		66,646		6,373			9.6
Intangible assets amortization	961		1,002		(41		)	(4.1	)	2,885		3,085		(200		)	(6.5	)
Marketing	4,052		4,045		7			0.2		12,493		14,101		(1,608		)	(11.4	)
Professional and outside services	4,930		4,030		900			22.3		14,099		11,813		2,286			19.4
Deposit insurance	9,694		6,344		3,350			52.8		30,098		19,701		10,397			52.8
Other expense	23,451		20,683		2,768			13.4		68,317		65,435		2,882			4.4
Total non-interest expense	$	178,783	$	161,823	$	16,960		10.5		$	530,857	$	490,026	$	40,831		8.3

Comparison to Prior Year Quarter

Total non-interest expense for the three months ended September 30, 2018 was $178.8 million, an increase of $17.0 million, or 10.5%, compared to $161.8 million for the three months ended September 30, 2017. The increase is primarily attributable to compensation and benefits, technology and equipment, and deposit insurance.

Compensation and benefits totaled $96.6 million for the three months ended September 30, 2018, compared to $88.4 million for the three months ended September 30, 2017. The increase was due to strategic hires, annual merit increases, and higher medical costs.

Technology and equipment totaled $24.6 million for the three months ended September 30, 2018, compared to $22.6 million for the three months ended September 30, 2017. The increase was due to higher depreciation and service contracts to support strategic and infrastructure projects.

Deposit insurance totaled $9.7 million for the three months ended September 30, 2018, compared to $6.3 million for the three months ended September 30, 2017. The increase was primarily due to an additional accrual of $2.8 million related to the additional FDIC premiums for prior periods' deposit insurance assessments and related interest. See Note 1 to the Condensed Consolidated Financial Statements included in Item 1 of this report for additional information.

Comparison to Prior Year to Date

Total non-interest expense for the nine months ended September 30, 2018 was $530.9 million, an increase of $40.8 million, or 8.3%, compared to $490.0 million for the nine months ended September 30, 2017. The increase is primarily attributable to compensation and benefits, technology and equipment, and deposit insurance.

Compensation and benefits totaled $284.5 million for the nine months ended September 30, 2018, compared to $262.3 million for the nine months ended September 30, 2017. The increase was due to strategic hires, annual merit increases, and higher medical costs.

Technology and equipment totaled $73.0 million for the nine months ended September 30, 2018, compared to $66.6 million for the nine months ended September 30, 2017. The increase was due to higher depreciation and service contracts to support strategic and infrastructure projects.

Deposit insurance totaled $30.1 million for the nine months ended September 30, 2018, compared to $19.7 million for the nine months ended September 30, 2017. The increase was primarily due to $10.0 million related to the additional FDIC premiums for prior periods' deposit insurance assessments and related interest. See Note 1 to the Condensed Consolidated Financial Statements included in Item 1 of this report for additional information.

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Income Taxes

Webster recognized income tax expense of $13.7 million and $54.5 million reflecting effective tax rates of 12.1% and 17.2% for the three and nine months ended September 30, 2018, respectively, compared to $30.3 million and $81.3 million reflecting 31.9% and 30.5%, for the three and nine months ended September 30, 2017, respectively.

The decreases in both tax expense and the effective tax rates for both the three and nine months ended September 30, 2018 as compared to the same periods in 2017 reflect the reduction of the U.S. corporate tax rate effective in 2018 as a result of the Tax Act as well as increases in net tax benefits specific to the periods in 2018 as compared to 2017.

The Company recognized $12.6 million and $17.1 million of net tax benefits specific to the three and nine months ended September 30, 2018, respectively, compared to $0.8 million and $6.1 million specific to the three and nine months ended September 30, 2017, respectively. The increases in 2018 as compared to 2017 principally reflect the recognition of benefits from tax planning of $8.5 million for both the three and nine months ended September 30, 2018. In addition, $1.2 million and $2.4 million for the three and nine months ended September 30, 2018, respectively, is attributable to the charges recognized during the respective periods relating to additional FDIC premiums for the period June 30, 2015 through December 31, 2017.

For additional information on Webster's income taxes, including deferred tax assets and uncertain tax positions, see Note 8 - Income Taxes in the Notes to Consolidated Financial Statements contained in Webster's 2017 Form 10-K.

54

Segment Reporting

Webster’s operations are organized into three reportable segments that represent its primary businesses - Commercial Banking, HSA Bank, and Community Banking. These three segments reflect how executive management responsibilities are assigned, the primary businesses, the products and services provided, the type of customer served, and how discrete financial information is currently evaluated. The Corporate Treasury unit of the Company, along with adjustments required to reconcile profitability metrics to amounts reported in accordance with GAAP, are included in the Corporate and Reconciling category.

Commercial Banking is comprised of Commercial Banking and Private Banking operating segments.

Commercial Banking provides commercial and industrial lending and leasing, commercial real estate lending, and treasury and payment solutions. Specifically, Webster Bank deploys lending through middle market, commercial real estate, equipment financing, asset-based lending and specialty lending units. These groups utilize a relationship approach model throughout its footprint when providing lending, deposit, and cash management services to middle market companies. In addition, Commercial Banking serves as a referral source to the other lines of business.

Private Banking provides local, full relationship banking that serves high net worth clients, not-for-profit organizations, and business clients for asset management, financial planning services, trust services, loan products, and deposit products. These client relationships generate fee revenue on assets under management or administration, while a majority of the relationships also include lending and/or deposit accounts which provide net interest income and other ancillary fees.

HSA Bank offers a comprehensive consumer directed healthcare solution that includes, health savings accounts, health reimbursement accounts, flexible spending accounts, and other financial solutions. Health savings accounts are used in conjunction with high deductible health plans in order to facilitate tax advantages for account holders with respect to health care spending and retirement savings, in accordance with applicable laws. Health savings accounts are offered through employers for the benefit of their employees or directly to individual consumers and are distributed nationwide directly as well as through national and regional insurance carriers, benefit consultants and financial advisors.

HSA Bank deposits provide long duration low-cost funding that is used to minimize the Company’s use of wholesale funding in support of the Company’s loan growth. As such, net interest income represents the difference between a funding credit allocation, reflecting the value of the duration funding, and the interest paid on deposits. In addition, non-interest revenue is generated predominantly through service fees and interchange income.

Community Banking is comprised of Personal Banking and Business Banking operating segments.

Through a distribution network, consisting of 163 banking centers and 326 ATMs, a customer care center, and a full range of web and mobile-based banking services, it serves consumer and business customers primarily throughout southern New England and into Westchester County, New York.

Personal Banking offers consumer deposit and fee-based services, residential mortgages, home equity lines/loans, unsecured consumer loans, and credit card products. In addition, investment and securities-related services, including brokerage and investment advice is offered through a strategic partnership with LPL Financial Holdings Inc. (LPL), a broker dealer registered with the SEC, a registered investment advisor under federal and applicable state laws, a member of the Financial Industry Regulatory Authority, and a member of the Securities Investor Protection Corporation. Webster Bank has employees located throughout its banking center network, who, through LPL, are registered representatives.

Business Banking offers credit, deposit, and cash flow management products to businesses and professional service firms with annual revenues of up to $25 million. This group builds broad customer relationships through business bankers and business certified banking center managers, supported by a team of customer care center bankers and industry and product specialists.

Description of Segment Reporting Methodology

Webster’s reportable segment results are intended to reflect each segment as if it were a stand-alone business. Webster uses an internal profitability reporting system to generate information by operating segment, which is based on a series of management estimates and allocations regarding funds transfer pricing, provision for loan and lease losses, non-interest expense, income taxes, and equity capital. These estimates and allocations, certain of which are subjective in nature, are periodically reviewed and refined. Changes in estimates and allocations that affect the reported results of any operating segment do not affect the consolidated financial position or results of operations of Webster as a whole. The full profitability measurement reports, which are prepared for each operating segment, reflect non-GAAP reporting methodologies. The differences between full profitability and GAAP results are reconciled in the Corporate and Reconciling category.

55

Webster allocates interest income and interest expense to each business, while also transferring the primary interest rate risk exposures to the Corporate and Reconciling category, using a matched maturity funding concept called FTP. The allocation process considers the specific interest rate risk and liquidity risk of financial instruments and other assets and liabilities in each line of business. The matched maturity funding concept considers the origination date and the earlier of the maturity date or the repricing date of a financial instrument to assign an FTP rate for loans and deposits originated each day. Loans are assigned an FTP rate for funds used and deposits are assigned an FTP rate for funds provided. This process is executed by the Company’s Financial Planning and Analysis division and is overseen by the Company's ALCO.

Webster allocates the provision for loan and lease losses to each reportable segment based on management’s estimate of the inherent loss content in each of the specific loan and lease portfolios. Management believes the reserve level is adequate to cover inherent losses in each reportable segment. For additional discussion related to asset quality metrics, see the "Asset Quality" section elsewhere within this report.

Webster allocates a majority of non-interest expense to each reportable segment using a full-absorption costing process. Costs, including corporate overhead, are analyzed, pooled by process, and assigned to the appropriate reportable segment. A $10.0 million charge related to an accrual for additional FDIC premiums and related interest, for the nine months ended September 30, 2018, is included in the Corporate and Reconciling category. See Note 1 to the Condensed Consolidated Financial Statements included in Item 1 of this report for additional information.

Beginning in 2018, income tax expense is estimated for each reportable segment individually. The 2017 income tax expense was estimated for all segments using the consolidated effective tax rate. This change in the estimate of income tax expense reflects an estimate of full profitability for each of the individual business segments based on the nature of their operations.

The following tables present net income (loss), selected balance sheet information, and assets under administration/management for Webster’s reportable segments and the Corporate and Reconciling category for the periods presented:

	Three months ended September 30,					Nine months ended September 30,
(In thousands)	2018		2017			2018		2017
Net income (loss):
Commercial Banking	$	42,854	$	30,357		$	119,121	$	93,827
HSA Bank	20,821		12,856			58,565		35,125
Community Banking	24,621		22,778			70,254		60,176
Corporate and Reconciling	11,377		(1,495		)	13,640		(3,582		)
Consolidated Total	$	99,673	$	64,496		$	261,580	$	185,546

	At September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling		Consolidated Total
Total assets	$	10,327,878	$	71,172	$	8,730,295	$	8,216,972	$	27,346,317
Loans and leases	10,289,003		112		8,031,904		—		18,321,019
Goodwill	—		21,813		516,560		—		538,373
Deposits	4,251,039		5,599,596		11,798,484		348,504		21,997,623
Not included in above amounts:
Assets under administration/management	2,142,819		1,599,075		3,596,591		—		7,338,485
	At December 31, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling		Consolidated Total
Total assets	$	9,350,028	$	76,308	$	8,909,671	$	8,151,638	$	26,487,645
Loans and leases	9,323,376		328		8,200,154		—		17,523,858
Goodwill	—		21,813		516,560		—		538,373
Deposits	4,122,608		5,038,681		11,476,334		356,106		20,993,729
Not included in above amounts:
Assets under administration/management	2,039,375		1,268,402		3,376,185		—		6,683,962

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Commercial Banking

Operating Results:

	Three months ended September 30,				Nine months ended September 30,
(In thousands)	2018		2017		2018		2017
Net interest income	$	91,243	$	81,925	$	264,353	$	239,118
Provision for loan and lease losses	8,207		12,073		26,300		29,562
Net interest income after provision	83,036		69,852		238,053		209,556
Non-interest income	18,305		13,207		48,662		39,163
Non-interest expense	44,506		38,339		128,730		113,767
Income before income taxes	56,835		44,720		157,985		134,952
Income tax expense	13,981		14,363		38,864		41,125
Net income	$	42,854	$	30,357	$	119,121	$	93,827

Comparison to Prior Year Quarter

Net income increased $12.5 million for the three months ended September 30, 2018 as compared to the same period in 2017. Net interest income increased $9.3 million, primarily due to loan growth and higher loan and deposit margins. The provision for loan and lease losses decreased $3.9 million. While asset quality remained stable, the three months ended September 30, 2017 included increased provision levels compared to the current quarter in connection with our annual ALLL model refresh. Non-interest income increased $5.1 million primarily due to greater syndication fees and client interest rate hedging activity in the quarter as compared to prior year. Non-interest expense increased $6.2 million, primarily due to investments in people and infrastructure.

Comparison to Prior Year to Date

Net income increased $25.3 million for the nine months ended September 30, 2018 as compared to the same period in 2017. Net interest income increased $25.2 million, primarily due to loan growth and higher loan and deposit margins. The provision for loan and lease losses decreased $3.3 million. While asset quality remained stable, the nine months ended September 30, 2017 included increased provision levels compared to the current period in connection with our annual ALLL model refresh. Non-interest income increased $9.5 million, primarily due to greater syndication fees and client interest rate hedging activity in the period as compared to prior year. Non-interest expense increased $15.0 million, primarily due to investments in people and infrastructure.

Selected Balance Sheet Information and Assets Under Administration/Management:

(In thousands)	At September 30, 2018		At December 31, 2017
Total assets	$	10,327,878	$	9,350,028
Loans and leases	10,289,003		9,323,376
Deposits	4,251,039		4,122,608
Not included in above amounts:
Assets under administration/management	2,142,819		2,039,375

Loans and leases increased $965.6 million at September 30, 2018 compared to December 31, 2017. Loan originations in the nine months ended September 30, 2018 and 2017 were $3.1 billion and $2.3 billion, respectively.

Deposits increased $128.4 million at September 30, 2018 compared to December 31, 2017, primarily due to seasonality of Government deposits.

Through Private Banking, Commercial Banking held approximately $462.0 million and $357.5 million in assets under administration at September 30, 2018 and December 31, 2017, respectively. In addition, Commercial Banking held $1.7 billion in assets under management at September 30, 2018 and December 31, 2017.

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HSA Bank

Operating Results:

	Three months ended September 30,				Nine months ended September 30,
(In thousands)	2018		2017		2018		2017
Net interest income	$	36,731	$	26,713	$	104,920	$	76,339
Non-interest income	22,159		19,371		67,710		58,392
Non-interest expense	30,753		27,222		93,488		84,211
Income before income taxes	28,137		18,862		79,142		50,520
Income tax expense	7,316		6,006		20,577		15,395
Net income	$	20,821	$	12,856	$	58,565	$	35,125

Comparison to Prior Year Quarter

Net income increased $8.0 million for the three months ended September 30, 2018 as compared to the same period in 2017. Net interest income increased $10.0 million, primarily due to growth in deposits and improved deposit spreads. Non-interest income increased $2.8 million due to increased account growth. Non-interest expense increased $3.5 million primarily due to account growth and continued investment in the business including expanded distribution.

Comparison to Prior Year to Date

Net income increased $23.4 million for the nine months ended September 30, 2018 as compared to the same period in 2017. Net interest income increased $28.6 million, primarily due to growth in deposits and improved deposit spreads. Non-interest income increased $9.3 million due to increased account growth. Non-interest expense increased $9.3 million primarily due to account growth as well as continued investment in the business including expanded distribution.

Selected Balance Sheet Information and Assets Under Administration:

(In thousands)	At September 30, 2018		At December 31, 2017
Total assets	$	71,172	$	76,308
Deposits	5,599,596		5,038,681
Not included in above amounts:
Assets under administration	1,599,075		1,268,402

Deposits increased $560.9 million at September 30, 2018 compared to December 31, 2017, due to an increase in new accounts as well as organic growth in existing account balances.

Additionally, HSA Bank had $1.6 billion in assets under administration through linked brokerage accounts at September 30, 2018 compared to $1.3 billion at December 31, 2017. The $330.7 million increase in linked brokerage balances is driven by investment account growth, continued net contributions by account holders and changes in market value of investments.

At September 30, 2018, there were $7.2 billion in total footings, comprised of $5.6 billion in deposit balances and $1.6 billion in assets under administration.

58

Community Banking

Operating Results:

	Three months ended September 30,					Nine months ended September 30,
(In thousands)	2018		2017			2018		2017
Net interest income	$	101,952	$	96,859		$	302,782	$	286,351
Provision (benefit) for loan and lease losses	2,293		(1,923		)	5,700		(1,662		)
Net interest income after provision	99,659		98,782			297,082		288,013
Non-interest income	26,848		27,079			78,421		80,516
Non-interest expense	95,769		92,478			287,795		281,979
Income before income taxes	30,738		33,383			87,708		86,550
Income tax expense	6,117		10,605			17,454		26,374
Net income	$	24,621	$	22,778		$	70,254	$	60,176

Comparison to Prior Year Quarter

Net income increased $1.8 million for the three months ended September 30, 2018 as compared to the same period in 2017. Net interest income increased $5.1 million, primarily due to growth in deposit balances, coupled with improved interest rate spreads on deposits. The provision for loan and lease losses increased $4.2 million The increase in provision is primarily due to changes in loan balances and asset quality. Non-interest income decreased $0.2 million primarily driven by lower mortgage production and related returns on mortgage banking activities, partially offset by growth in fees from investment services and fees from interest rate hedging activities. Non-interest expense increased $3.3 million as a result of higher compensation expenses, investments in technology; partially offset by reductions in marketing, loan production-related expenses, and other expense categories.

Comparison to Prior Year to Date

Net income increased $10.1 million for the nine months ended September 30, 2018 as compared to the same period in 2017. Net interest income increased $16.4 million, primarily due to growth in deposit balances as well as improved interest rate spreads on deposits. The provision for loan and lease losses increased $7.4 million. The increase in provision is primarily due to changes in loan balances and asset quality. Non-interest income decreased $2.1 million primarily resulting from decreased returns on mortgage banking activities related to lower mortgage production, partially offset by growth in fees from investment services and other miscellaneous fee income. Non-interest expense increased $5.8 million as a result of higher compensation expenses, investments in technology and risk management; partially offset by lower marketing-related expenses, and reductions in other expense categories.

Selected Balance Sheet Information and Assets Under Administration:

(In thousands)	At September 30, 2018		At December 31, 2017
Total assets	$	8,730,295	$	8,909,671
Loans	8,031,904		8,200,154
Deposits	11,798,484		11,476,334
Not included in above amounts:
Assets under administration	3,596,591		3,376,185

Loans decreased $168.3 million at September 30, 2018 compared to December 31, 2017. The net lower loan balances are related to decreases in residential mortgages, home equity and unsecured personal loans as principal paydowns exceeded new originations; partially offset by growth in business banking loan balances.

Loan originations in the nine months ended September 30, 2018 and 2017 were $1.0 billion and $1.5 billion, respectively. The $511.9 million decrease in originations was driven by a decrease in residential mortgages, home equity and other consumer loans.

Deposits increased $322.2 million at September 30, 2018 compared to December 31, 2017 due to growth in time and demand deposits influenced by higher market interest rates; partially offset by lower balances in money market, savings and interest -bearing checkng accounts.

Additionally, at September 30, 2018 and December 31, 2017, Webster Bank's investment services division held $3.6 billion and $3.4 billion of assets under administration, respectively, in its strategic partnership with LPL.

59

Financial Condition

Webster had total assets of $27.3 billion at September 30, 2018 and $26.5 billion at December 31, 2017 as:

• loans and leases of $18.1 billion, net of ALLL of $211.8 million, at September 30, 2018 increased $0.8 billion compared to loans and leases of $17.3 billion, net of ALLL of $200.0 million, at December 31, 2017, while;

• total deposits of $22.0 billion at September 30, 2018 increased $1.0 billion compared to total deposits of $21.0 billion at December 31, 2017, the result of a 5.7% increase, in interest bearing deposits due to growth in health savings accounts and time deposits.

At September 30, 2018, total shareholders' equity of $2.8 billion increased $114.2 million compared to total shareholders' equity of $2.7 billion at December 31, 2017. Changes in shareholders' equity for the nine months ended September 30, 2018 include:

• an increase of $261.6 million in net income;

• an increase of $8.6 million related to share-based award activity, partially offset by;

• a reduction of $25.8 million for purchases of treasury stock at cost, and;

• reductions of $84.9 million in common dividends and $5.9 million in preferred dividends.

The quarterly cash dividend to shareholders was increased to $0.33 per common share effective April 23, 2018. See the selected financial highlights under the "Results of Operations" section and Note 10:Regulatory Matters in the Notes to Condensed Consolidated Financial Statements contained elsewhere in this report for information on regulatory capital levels and ratios.

Investment Securities

Webster Bank's investment securities are managed within regulatory guidelines and corporate policy, which include limitations on aspects such as concentrations in and type of investments as well as minimum risk ratings per type of security. The OCC may establish additional individual limits on a certain type of investment if the concentration in such investment presents a safety and soundness concern. In addition to Webster Bank, Webster Financial Corporation (the Holding Company) also may directly hold investment securities from time-to-time. At September 30, 2018, the Company had no holdings in obligations of individual states, counties, or municipalities which exceeded 10% of consolidated shareholders’ equity.

Webster maintains, through its Corporate Treasury Unit, investment securities that are primarily used to provide a source of liquidity for operating needs, to generate interest income, and as a means to manage interest-rate risk. Investment securities are classified into two major categories, available-for-sale and held-to-maturity. Available-for-sale currently consists of U.S Treasury Bills, Agency CMO, Agency MBS, Agency CMBS, CMBS, CLO, and Corporate debt. Held-to-maturity currently consists of Agency CMO, Agency MBS, Agency CMBS, municipal bonds and notes, CMBS, and private label MBS.

The combined carrying value of investment securities totaled $7.2 billion at September 30, 2018 and $7.1 billion at December 31, 2017.

• Available-for-sale investment securities increased by $185.9 million, primarily due to principal purchase activity for Agency MBS and CMBS more than offsetting principal paydowns throughout the portfolio. The tax-equivalent yield in the portfolio was 2.86% for the nine months ended September 30, 2018 compared to 2.75% for the nine months ended September 30, 2017.

• Held-to-maturity investment securities decreased by $154.9 million, primarily due to principal paydowns throughout the portfolio exceeding purchase activity for Agency MBS and municipal bonds and notes. The tax-equivalent yield in the portfolio was 2.94% for the nine months ended September 30, 2018 compared to 3.13% for the nine months ended September 30, 2017.

The Company held $6.1 billion in investment securities that are in an unrealized loss position at September 30, 2018. Approximately $2.2 billion of this total has been in an unrealized loss position for less than twelve months, while the remainder, $3.9 billion, has been in an unrealized loss position for twelve months or longer. These investment securities were evaluated by management and were determined not to be other than temporarily impaired. The Company does not have the intent to sell these investment securities, and it is more likely than not that it will not have to sell these investment securities before the recovery of their cost basis. To the extent that credit movements and other related factors influence the fair value of its investment securities, the Company may be required to record impairment charges for OTTI in future periods. The total unrealized loss was $284.9 million at September 30, 2018.

60

The following table summarizes the amortized cost and fair value of investment securities:

	At September 30, 2018									At December 31, 2017
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale:
U.S. Treasury Bills	$	9,215	$	—	$	(1	)	$	9,214	$	1,247	$	—	$	—		$	1,247
Agency CMO	254,549		79		(8,162		)	246,466		308,989		1,158		(3,814		)	306,333
Agency MBS	1,466,973		641		(57,883		)	1,409,731		1,124,960		2,151		(19,270		)	1,107,841
Agency CMBS	610,411		—		(39,862		)	570,549		608,276		—		(20,250		)	588,026
CMBS	404,104		850		(52		)	404,902		358,984		2,157		(74		)	361,067
CLO	127,743		202		(284		)	127,661		209,075		910		(134		)	209,851
Single issuer-trust preferred	—		—		—			—		7,096		—		(46		)	7,050
Corporate debt	56,032		361		(963		)	55,430		56,504		797		(679		)	56,622
Available-for-sale	$	2,929,027	$	2,133	$	(107,207	)	$	2,823,953	$	2,675,131	$	7,173	$	(44,267	)	$	2,638,037
Held-to-maturity:
Agency CMO	$	218,351	$	143	$	(9,192	)	$	209,302	$	260,114	$	664	$	(4,824	)	$	255,954
Agency MBS	2,535,043		8,256		(110,035		)	2,433,264		2,569,735		16,989		(37,442		)	2,549,282
Agency CMBS	672,505		—		(28,222		)	644,283		696,566		—		(10,011		)	686,555
Municipal bonds and notes	684,587		804		(26,487		)	658,904		711,381		8,584		(6,558		)	713,407
CMBS	221,969		380		(3,746		)	218,603		249,273		2,175		(620		)	250,828
Private Label MBS	3		—		—			3		323		1		—			324
Held-to-maturity	$	4,332,458	$	9,583	$	(177,682	)	$	4,164,359	$	4,487,392	$	28,413	$	(59,455	)	$	4,456,350

The benchmark 10-year U.S. Treasury rate increased to 3.05% at September 30, 2018 from 2.41% at December 31, 2017. Webster Bank has the ability to use its investment securities, as well as interest-rate financial instruments within internal policy guidelines, to hedge and manage interest-rate risk as part of its asset/liability strategy. See Note 12:Derivative Financial Instruments in the Notes to Condensed Consolidated Financial Statements contained elsewhere in this report for additional information concerning derivative financial instruments.

Alternative Investments

The Company has investments in private equity funds and other non-marketable investments, which include ownership in other equity ventures. These investments, which totaled $21.0 million at September 30, 2018 and $18.0 million at December 31, 2017, are included in other assets in the accompanying Condensed Consolidated Balance Sheets. The Company recognized a net gain of $0.3 million and $0.6 million for the three months ended September 30, 2018 and 2017, respectively, and a net gain of $2.2 million and $2.3 million for the nine months ended September 30, 2018 and 2017, respectively. These amounts are included in other non-interest income in the accompanying Condensed Consolidated Statements of Income.

See Note 13:Fair Value Measurements in the Notes to Condensed Consolidated Financial Statements contained elsewhere in this report for a discussion on fair value accounting of alternative investments.

See the "Supervision and Regulation" section of Item 1. Business, contained in Webster's 2017 Form 10-K, for information on Covered Funds, as defined by the Volcker Rule.

61

Loans and Leases

The following table provides the composition of loans and leases:

	At September 30, 2018				At December 31, 2017
(Dollars in thousands)	Amount			%	Amount		%
Residential	$	4,388,442		24.0	$	4,464,651	25.5
Consumer:
Home equity	2,198,103			12.0	2,336,846		13.3
Other consumer	227,440			1.2	237,695		1.4
Total consumer	2,425,543			13.2	2,574,541		14.7
Commercial:
Commercial non-mortgage	5,228,326			28.5	4,551,580		26.0
Asset-based	971,853			5.3	837,490		4.8
Total commercial	6,200,179			33.8	5,389,070		30.8
Commercial real estate:
Commercial real estate	4,581,185			25.0	4,249,549		24.3
Commercial construction	196,985			1.1	279,531		1.6
Total commercial real estate	4,778,170			26.1	4,529,080		25.8
Equipment financing	515,132			2.8	545,877		3.1
Unamortized premiums	14,644			0.1	15,316		0.1
Deferred fees	(1,091		)	—	5,323		—
Total loans and leases	$	18,321,019		100.0	$	17,523,858	100.0

Total residential loans were $4.4 billion at September 30, 2018, a decrease of $76.2 million from December 31, 2017. The net decrease is a result of net principal paydowns exceeding the originations to the portfolio.

Total consumer loans were $2.4 billion at September 30, 2018, a decrease of $149.0 million from December 31, 2017. The net decrease is primarily due to continued net principal paydowns within the home equity lines and auto loan portfolios exceeding originations.

Total commercial loans were $6.2 billion at September 30, 2018, an increase of $811.1 million from December 31, 2017. The net increase primarily related to originations of $2.1 billion, partially offset by payments and payoffs.

Total commercial real estate loans were $4.8 billion at September 30, 2018, a increase of $249.1 million from December 31, 2017. The increase is a result of originations of $1.1 billion, partially offset by payments and payoffs.

Equipment financing loans and leases were $515.1 million at September 30, 2018, a decrease of $30.7 million from December 31, 2017. The net decrease was primarily related to amortization and higher prepayments, partially offset by originations of $123.8 million.

Asset Quality

Management maintains asset quality within established risk tolerance levels through its underwriting standards, servicing, and management of loan and lease performance. Loans and leases, particularly where a heightened risk of loss has been identified, are regularly monitored to mitigate further deterioration which could potentially impact key measures of asset quality in future periods. Past due loans and leases, non-performing assets, and credit loss levels are considered to be key measures of asset quality.

The following table provides key asset quality ratios:

	At September 30, 2018		At December 31, 2017
Non-performing loans and leases as a percentage of loans and leases	0.83	%	0.72	%
Non-performing assets as a percentage of loans and leases plus OREO	0.86		0.76
Non-performing assets as a percentage of total assets	0.58		0.50
ALLL as a percentage of non-performing loans and leases	138.76		158.00
ALLL as a percentage of loans and leases	1.16		1.14
Net charge-offs as a percentage of average loans and leases (1)	0.15		0.20
Ratio of ALLL to net charge-offs (1)	7.88x		5.68x

(1) Calculated for the September 30, 2018 period based on the year-to-date net charge-offs, annualized.

62

Potential Problem Loans and Leases

Potential problem loans and leases are defined by management as certain loans and leases that, for:

• commercial, commercial real estate, and equipment financing are performing loans and leases classified as Substandard and have a well-defined weakness that could jeopardize the full repayment of the debt; and

• residential and consumer are performing loans 60-89 days past due and accruing.

Potential problem loans and leases exclude past due 90 days or more and accruing, non-accrual, and TDR classifications.

Management monitors potential problem loans and leases due to a higher degree of risk associated them. The current expectation of probable losses is included in the ALLL, however management cannot predict whether these potential problem loans and leases ultimately will become non-performing or result in a loss. The Company had potential problem loans and leases of $268.9 million at September 30, 2018 compared to $271.5 million at December 31, 2017.

Past Due Loans and Leases

The following table provides information regarding loans and leases past due 30 days or more and accruing income:

	At September 30, 2018			At December 31, 2017
(Dollars in thousands)	Amount		% (1)	Amount		% (1)
Residential	$	14,499	0.33	$	13,771	0.31
Consumer:
Home equity	12,917		0.59	18,397		0.79
Other consumer	2,714		1.19	3,997		1.68
Commercial non-mortgage	1,198		0.02	5,809		0.13
Commercial real estate	2,746		0.06	551		0.01
Equipment financing	4,988		0.97	2,358		0.43
Loans and leases past due 30-89 days	39,062		0.21	44,883		0.26
Commercial non-mortgage	139		—	644		0.01
Commercial Real Estate	—		—	243		—
Loans and leases past due 90 days and accruing	139		—	887		0.01
Total	39,201		0.21	45,770		0.26
Deferred costs and unamortized premiums, net	97			77
Total loans and leases past due 30 days or more and accruing income	$	39,298		$	45,847

(1) Represents the principal balance of loans and leases past due 30 days or more and accruing income as a percentage of the outstanding principal balance within the comparable loan and lease category.

The balance of loans and leases past due 30 days or more and accruing income decreased $6.5 million at September 30, 2018 compared to December 31, 2017. Decreases in consumer and commercial non-mortgage were partially offset by increases in commercial real estate and equipment financing. The ratio of loans and leases past due 30 days or more and accruing income as a percentage of loans and leases declined to 0.21% at September 30, 2018 as compared to 0.26% at December 31, 2017.

63

Non-performing Assets

The following table provides information regarding non-performing assets:

	At September 30, 2018			At December 31, 2017
(Dollars in thousands)	Amount		% (1)	Amount			% (1)
Residential	$	49,348	1.12	$	44,407		0.99
Consumer:
Home equity	35,132		1.60	35,601			1.52
Other consumer	1,489		0.65	1,706			0.72
Total consumer	36,621		1.51	37,307			1.45
Commercial:
Commercial non-mortgage	55,027		1.05	39,402			0.87
Asset-based loans	1,066		0.11	589			0.07
Total commercial	56,093		0.90	39,991			0.74
Commercial real estate:
Commercial real estate	7,255		0.16	4,484			0.11
Commercial construction	—		—	—			—
Total commercial real estate	7,255		0.15	4,484			0.10
Equipment financing	3,339		0.65	393			0.07
Total non-accrual loans and leases	152,656		0.83	126,582			0.72
Deferred costs and unamortized premiums, net	139			(69		)
Total recorded investment in non-accrual loans and leases (2)	$	152,795		$	126,513
Total non-accrual loans and leases	$	152,656		$	126,582
Foreclosed and repossessed assets:
Residential and consumer	5,228			5,759
Equipment financing	83			305
Total foreclosed and repossessed assets	5,311			6,064
Total non-performing assets	$	157,967		$	132,646

(1) Represents the principal balance of non-accrual loans and leases as a percentage of the outstanding principal balance within the comparable loan and lease category.

(2) Includes non-accrual TDRs of $95.2 million at September 30, 2018 and $74.3 million at December 31, 2017.

Non-performing assets increased $25.3 million at September 30, 2018 compared to December 31, 2017. The increase in non-performing assets at September 30, 2018 is primarily due to commercial non-mortgage, commercial real estate and equipment finance portfolios. As a result, overall non-performing assets as a percentage of total assets increased to 0.58% at September 30, 2018 as compared to 0.50% at December 31, 2017.

The following table provides detail of non-performing loan and lease activity:

	Nine months ended September 30,
(In thousands)	2018			2017
Beginning balance	$	126,582		$	134,035
Additions	90,121			104,693
Paydowns/draws	(37,998		)	(48,187		)
Charge-offs	(21,036		)	(21,002		)
Other reductions	(5,013		)	(5,891		)
Ending balance	$	152,656		$	163,648

64

Impaired Loans and Leases

Loans and leases are considered impaired when, based on current information and events, it is probable the Company will be unable to collect all amounts due in accordance with the original contractual terms of the loan agreement, including scheduled principal and interest payments. Impairment is evaluated on a pooled basis for smaller-balance homogeneous residential, consumer loans and small business loans. Commercial, commercial real estate, and equipment financing loans and leases over a specific dollar amount and all TDR are evaluated individually for impairment.

At September 30, 2018, there were 1,521 impaired loans and leases with a recorded investment balance of $266.0 million, which included loans and leases of $92.9 million with an impairment allowance of $17.8 million. This compares to 1,606 impaired loans and leases with a recorded investment balance of $246.8 million, which included loans and leases of $105.4 million, with an impairment allowance of $16.6 million at December 31, 2017. For additional information, see Note 4:Loans and Leases in the Notes to Condensed Consolidated Financial Statements contained elsewhere in this report.

Troubled Debt Restructurings

A modified loan is considered a TDR when two conditions are met: (i) the borrower is experiencing financial difficulties; and (ii) the modification constitutes a concession. Modified terms are dependent upon the financial position and needs of the individual borrower. The Company considers all aspects of the restructuring in determining whether a concession has been granted, including the debtor's ability to access market rate funds. In general, a concession exists when the modified terms of the loan are more attractive to the borrower than standard market terms. Common modifications include material changes in covenants, pricing, and forbearance. Loans for which the borrower has been discharged under Chapter 7 bankruptcy are considered collateral dependent TDRs and thus, impaired at the date of discharge and charged down to the fair value of collateral less cost to sell.

The Company’s policy is to place consumer loan TDRs, except those that were performing prior to TDR status, on non-accrual status for a minimum period of six months. Commercial TDRs are evaluated on a case-by-case basis for determination of accrual status. Loans qualify for return to accrual status once they have demonstrated performance with the restructured terms of the loan agreement for a minimum of six months. Initially, all TDRs are reported as impaired. Generally, a TDR is classified as an impaired loan and reported as a TDR for the remaining life of the loan. Impaired and TDR classification may be removed if the borrower demonstrates compliance with the modified terms for a minimum of six months and through one fiscal year-end, and the restructuring agreement specifies a market rate of interest equal to that which would be provided to a borrower with similar credit at the time of restructuring. In the limited circumstance that a loan is removed from TDR classification, it is the Company’s policy to continue to base its measure of loan impairment on the contractual terms specified by the loan agreement.

The following tables provide information for TDRs:

	Nine months ended September 30,
(In thousands)	2018			2017
Beginning balance	$	221,404		$	223,528
Additions	59,624			25,604
Paydowns/draws	(32,089		)	(25,277		)
Charge-offs	(6,286		)	(2,999		)
Transfers to OREO	(2,280		)	(2,506		)
Ending balance	$	240,373		$	218,350

(In thousands)	At September 30, 2018		At December 31, 2017
Accrual status	$	145,219	$	147,113
Non-accrual status	95,154		74,291
Total recorded investment of TDRs	$	240,373	$	221,404
Specific reserves for TDRs included in the balance of ALLL	$	16,338	$	12,384
Additional funds committed to borrowers in TDR status	2,926		2,736

Overall, TDR balances increased $19.0 million at September 30, 2018 compared to December 31, 2017, while the specific reserves for TDRs increased from year end, reflective of management’s current assessment of reserve requirements.

65

Allowance for Loan and Lease Losses Methodology

The ALLL policy is considered a critical accounting policy. Executive management reviews and advises on the adequacy of the ALLL reserve, which is maintained at a level deemed sufficient by management to cover probable losses inherent within the loan and lease portfolios.

The quarterly process for estimating probable losses is based on predictive models, to measure the current risk profile of loan portfolio and combines other quantitative and qualitative factors together with the impairment reserve to determine the overall reserve requirement. Management's judgment and assumptions influence loss estimates and ALLL balances. Quantitative and qualitative factors that management considers include factors such as the nature and volume of portfolio growth, national and regional economic conditions and trends, other internal performance metrics, and how each of these factors is expected to impact near term loss trends. While actual future conditions and realized losses may vary significantly from assumptions, management believes the ALLL is adequate at September 30, 2018.

The Company’s methodology for assessing an appropriate level of the ALLL includes three key elements:

• Impaired loans and leases are either analyzed on an individual or pooled basis and assessed for specific reserves measured based on the present value of expected future cash flows discounted at the effective interest rate of the loan or lease, except that as a practical expedient, impairment may be measured based on a loan or lease's observable market price, or the fair value of the collateral, if the loan or lease is collateral dependent. A loan or lease is collateral dependent if the repayment of the loan or lease is expected to be provided solely by the underlying collateral. The Company considers the pertinent facts and circumstances for each impaired loan or lease when selecting the appropriate method to measure impairment and evaluates, on a quarterly basis, each selection to ensure its continued appropriateness.

• Loans and leases that are not considered impaired and have similar risk characteristics, are segmented into homogeneous pools and modeled using quantitative methods. The Company's loss estimate for its commercial portfolios utilizes an expected loss methodology that is based on probability of default (PD) and LGD models. The PD and LGD models are based on borrower and facility risk ratings assigned to each loan and are updated throughout the year as a borrower's financial condition changes. PD and LGD models are derived using the Company's portfolio specific historic data and are refreshed annually. Residential and consumer portfolio loss estimates are based on roll rate models that utilize the Company's historic delinquency and default data. For each segmentation the loss estimates incorporate a loss emergence period (LEP) model which represents an amount of time between when a loss event first occurs to when it is charged-off. An LEP is determined for each loan type based on the Company's historical experience and is reassessed at least annually.

• The Company also considers qualitative factors, consistent with interagency regulatory guidance, that are not explicitly factored in the quantitative models but that can have an incremental or regressive impact on losses incurred in the current loan and lease portfolio.

Commercial loans are underwritten after evaluating and understanding the borrower’s ability to operate and service its debt. Underwriting standards are designed to focus on and support the promotion of relationships rather than transactional banking. Once it is determined that the borrower’s management possesses sound ethics and solid business acumen, the Company examines current and projected cash flows to determine the ability of the borrower to repay obligations as agreed. Commercial and industrial loans are primarily made based on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. Management regularly monitors the cash flows of borrowers as results may not be as expected, and the collateral securing these loans may fluctuate in value. Most commercial and industrial loans are secured by the assets being financed and may incorporate personal guarantees of the principals.

Commercial real estate loans are subject to underwriting standards and processes similar to commercial and industrial loans, in addition to those specific to real estate loans. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Repayment of these loans is largely dependent on the successful operation of the property securing the loan, the market in which the property is located, and the tenants of the property securing the loan. The properties securing the Company’s commercial real estate portfolio are diverse in terms of type and geographic location, which reduces the Company's exposure to adverse economic events that may affect a particular market. Management monitors and evaluates commercial real estate loans based on collateral, geography, and risk grade criteria. Commercial real estate loans may be adversely affected by conditions in the real estate markets or in the general economy. The Company also utilizes third-party experts to provide insight and guidance about economic conditions and trends affecting its commercial real estate loan portfolio.

Commercial construction loans have unique risk characteristics and are provided to experienced developers/sponsors with strong track records of successful completion and sound financial condition and are underwritten utilizing feasibility studies, independent appraisals, sensitivity analysis of absorption and lease rates, and financial analysis of the developers and property owners. Commercial construction loans are generally based upon estimates of costs and value associated with the complete project. Estimates may be subject to change as the construction project proceeds. In addition, these loans often include partial or full completion guarantees. Sources of repayment for these types of loans may be pre-committed permanent loans from approved long-term lenders, sales of developed property, or an interim loan commitment from the Company until permanent financing is obtained. Management closely monitors these loans with on-site inspections by third-party professionals and the Company's internal staff.

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Policies and procedures are in place to manage consumer loan risk and are developed and modified, as needed. Policies and procedures, coupled with relatively small loan amounts, and predominately collateralized structures spread across many individual borrowers, minimize risk. Trend and outlook reports are reviewed by management on a regular basis. Underwriting factors for mortgage and home equity loans include the borrower’s FICO score, the loan amount relative to property value, and the borrower’s debt to income level and are also influenced by regulatory requirements. Additionally, Webster Bank originates both qualified mortgage and non-qualified mortgage loans as defined by the Consumer Financial Protection Bureau rules.

At September 30, 2018 the ALLL was $211.8 million compared to $200.0 million at December 31, 2017. The increase of $11.8 million in the reserve at September 30, 2018 compared to December 31, 2017 is primarily due to growth in commercial banking. The ALLL reserve remains adequate to cover inherent losses in the loan and lease portfolios. ALLL as a percentage of loans and leases, also known as the reserve coverage, increased to 1.16% at September 30, 2018 from 1.14% at December 31, 2017, reflecting an updated assessment of inherent losses and impaired reserves. ALLL as a percentage of non-performing loans and leases decreased to 138.76% at September 30, 2018 from 158.00% at December 31, 2017.

The following table provides an allocation of the ALLL by portfolio segment:

	At September 30, 2018			At December 31, 2017
(Dollars in thousands)	Amount		% (1)	Amount		% (1)
Residential	$	18,673	0.42	$	19,058	0.42
Consumer	29,197		1.20	36,190		1.40
Commercial	100,717		1.63	89,533		1.67
Commercial real estate	58,200		1.22	49,407		1.09
Equipment financing	5,045		0.97	5,806		1.06
Total ALLL	$	211,832	1.16	$	199,994	1.14

(1) Percentage represents allocated ALLL to total loans and leases within the comparable category. The allocation of a portion of the ALLL to one category of loans and leases does not preclude its availability to absorb losses in other categories.

The following table provides detail of activity in the ALLL:

	At or for the three months ended September 30,						At or for the nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	207,322		$	199,578		$	199,994		$	194,320
Provision	10,500			10,150			32,000			27,900
Charge-offs:
Residential	(874		)	(585		)	(2,545		)	(1,940		)
Consumer	(4,863		)	(6,197		)	(14,844		)	(18,273		)
Commercial	(740		)	(3,002		)	(7,869		)	(5,321		)
Commercial real estate	(1,922		)	(749		)	(2,039		)	(951		)
Equipment financing	(136		)	(121		)	(246		)	(425		)
Total charge-offs	(8,535		)	(10,654		)	(27,543		)	(26,910		)
Recoveries:
Residential	133			280			844			924
Consumer	1,827			1,894			4,884			4,337
Commercial	431			466			1,457			1,105
Commercial real estate	143			10			154			21
Equipment financing	11			79			42			106
Total recoveries	2,545			2,729			7,381			6,493
Net charge-offs	(5,990		)	(7,925		)	(20,162		)	(20,417		)
Ending balance	$	211,832		$	201,803		$	211,832		$	201,803

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The following table provides a summary of net charge-offs (recoveries) to average loans and leases by category:

	Three months ended September 30,						Nine months ended September 30,
	2018			2017			2018			2017
(Dollars in thousands)	Amount		% (1)	Amount		% (1)	Amount		% (1)	Amount		% (1)
Residential	$	741	0.07	$	305	0.03	$	1,701	0.05	$	1,016	0.03
Consumer	3,036		0.49	4,303		0.67	9,960		0.53	13,936		0.71
Commercial	309		0.02	2,536		0.19	6,412		0.15	4,216		0.11
Commercial real estate	1,779		0.15	739		0.07	1,885		0.05	930		0.03
Equipment financing	125		0.10	42		0.03	204		0.05	319		0.07
Net charge-offs	$	5,990	0.13	$	7,925	0.18	$	20,162	0.15	$	20,417	0.16

(1) Net charge-offs (recoveries) to average loans and leases, percentage calculated based on period-to-date activity, annualized.

Net charge-offs decreased $1.9 million for the three months ended September 30, 2018 and $0.3 million for the nine months ended September 30, 2018 as compared to the same periods in 2017. The decrease for the three months ended September 30, 2018 is due to declines in both commercial and consumer charge-offs while the decrease for the nine months ended September 30, 2018 is due to a decrease in consumer charge-offs partly offset by an increase in commercial charge-offs. To assist management with its review, reports related to loan production, loan quality, concentrations of credit, loan delinquencies, non-performing loans, and potential problem loans are generated by loan reporting systems.

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Sources of Funds and Liquidity

Sources of Funds. The primary source of Webster Bank’s cash flow for use in lending and meeting its general operational needs is deposits. Operating activities, such as loan and mortgage-backed securities repayments, and other investment securities sale proceeds and maturities, also provide cash flow. While scheduled loan and investment security repayments are a relatively stable source of funds, loan and investment security prepayments and deposit inflows are influenced by prevailing interest rates and local economic conditions and are inherently uncertain. Additional sources of funds are provided by FHLB advances or other borrowings.

Federal Home Loan Bank and Federal Reserve Bank Stock. Webster Bank is a member of the Federal Home Loan Bank System, which consists of eleven district Federal Home Loan Banks, each subject to the supervision and regulation of the Federal Housing Finance Agency. An activity-based FHLB capital stock investment is required in order for Webster Bank to access advances and other extensions of credit for sources of funds and liquidity purposes. The FHLB capital stock investment is restricted in that there is no market for it, and it can only be redeemed by the FHLB. The FHLB has initiated a process to redeem the holdings of its member banks in excess of their membership and activity requirements, based on current conditions. As a result, Webster Bank held $83.0 million of FHLB capital stock at September 30, 2018 compared to $100.9 million at December 31, 2017, for its membership and for outstanding advances and other extensions of credit. On August 2, 2018, the FHLB paid a cash dividend equal to an annual yield of 5.87%.

Additionally, Webster Bank is required to hold FRB stock equal to 6% of its capital and surplus of which 50% is paid. The remaining 50% is subject to call when deemed necessary by the FRB. The FRB capital stock investment is restricted in that there is no market for it, and it can only be redeemed by the FRB. At both September 30, 2018 and December 31, 2017, Webster Bank held $50.7 million of FRB capital stock. A semi-annual dividend payment from the FRB is calculated as the lesser of three percent or yield of the 10-year Treasury note auctioned at the last auction held prior to the payment of the dividend.

Deposits. Webster Bank offers a wide variety of deposit products for checking and savings (including: ATM and debit card use, direct deposit, ACH payments, combined statements, mobile banking services, internet-based banking, bank by mail, as well as overdraft protection via line of credit or transfer from another deposit account) designed to meet the transactional, savings, and investment needs for both consumer and business customers throughout its primary market area. Webster Bank manages the flow of funds in its deposit accounts and provides a variety of accounts and rates consistent with FDIC regulations. Webster Bank’s Retail Pricing Committee and its Commercial and Institutional Liability Pricing Committee meet regularly to determine pricing and marketing initiatives.

Total deposits were $22.0 billion at September 30, 2018 compared to $21.0 billion at December 31, 2017. The increase is predominately related to an increase in health savings accounts of $560.9 million and time deposits of $626.8 million. See Note 7:Deposits in the Notes to Condensed Consolidated Financial Statements contained elsewhere in this report for additional information.

Borrowings. Borrowings primarily consist of FHLB advances which are utilized as a source of funding for liquidity and interest rate risk management purposes. At September 30, 2018 and December 31, 2017, FHLB advances totaled $1.4 billion and $1.7 billion, respectively. Webster Bank had additional borrowing capacity from the FHLB of approximately $3.0 billion at September 30, 2018 and $2.6 billion at December 31, 2017. Webster Bank also had additional borrowing capacity at the FRB of approximately $0.5 billion at both September 30, 2018 and December 31, 2017.

Securities sold under agreements to repurchase, whereby securities are delivered to counterparties under an agreement to repurchase the securities at a fixed price in the future, to a lesser extent, are also utilized as a source of funding. Unpledged investment securities of $4.4 billion at September 30, 2018 could have been used for collateral on borrowings such as repurchase agreements or, alternatively, to increase borrowing capacity by approximately $4.0 billion at the FHLB or approximately $4.2 billion at the FRB. In addition, Webster Bank may utilize term and overnight Fed funds to meet short-term liquidity needs. The Company also maintains long-term debt consisting of senior fixed-rate notes maturing in 2024 and junior subordinated notes maturing in 2033.

Total borrowed funds were $2.2 billion at September 30, 2018 compared to $2.5 billion at December 31, 2017. Borrowings represented 8.2% and 9.6% of total assets at September 30, 2018 and December 31, 2017, respectively. The decrease in borrowings was the result of deposits growing faster than loans which allowed for a lower usage of FHLB advances. For additional information, see Note 8:Borrowings in the Notes to Condensed Consolidated Financial Statements contained elsewhere in this report.

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Liquidity. Webster meets its cash flow requirements at an efficient cost under various operating environments through proactive liquidity management at both the Holding Company and Webster Bank. Liquidity comes from a variety of cash flow sources such as operating activities, including principal and interest payments on loans and investments, or financing activities, including unpledged investment securities, which can be sold or utilized to secure funding, and new deposits. Webster is committed to maintaining a strong, increasing base of core deposits, consisting of demand, checking, savings, health savings, and money market accounts, to support growth in its loan and lease portfolio. Liquidity is reviewed and managed in order to maintain stable, cost effective funding to promote overall balance sheet strength. Net cash provided by operating activities was $496.4 million for the nine months ended September 30, 2018 as compared to $300.3 million for the nine months ended September 30, 2017. The increase is most significantly a result of collateral settlement of derivative contracts during the current period.

Holding Company Liquidity. The primary source of liquidity at the Holding Company is dividends from Webster Bank. Webster Bank paid $220 million in dividends to the Holding Company during the nine months ended September 30, 2018. To a lesser extent, investment income, net proceeds from investment sales, borrowings, and public offerings may provide additional liquidity. The main uses of liquidity are the payment of principal and interest to holders of senior notes and capital securities, the payment of dividends to preferred and common shareholders, repurchases of its common stock, and purchases of available-for-sale investment securities. There are certain restrictions on the payment of dividends by Webster Bank to the Holding Company, which are described in the section captioned "Supervision and Regulation" in Item 1 of Webster’s 2017 Form 10-K. At September 30, 2018, there was $308.6 million of retained earnings available for the payment of dividends by Webster Bank to the Holding Company.

The Company has a common stock repurchase program authorized by the Board of Directors, with $91.7 million of remaining repurchase authority at September 30, 2018. In addition, Webster periodically acquires common shares outside of the repurchase program related to stock compensation plan activity. The Company records the purchase of shares of common stock at cost based on the settlement date for these transactions. During the nine months ended September 30, 2018, a total of 441,521 shares of common stock were repurchased for approximately $25.9 million, of which 215,000 shares were purchased under the common stock repurchase program at a cost of approximately $12.2 million, and 226,521 shares were purchased, at market prices, related to stock compensation plan activity for a cost of approximately $13.7 million.

Webster Bank Liquidity. Webster Bank's primary source of funding is core deposits. The primary use of this funding is for loan portfolio growth. Including time deposits, Webster Bank had a loan to total deposit ratio of 83.3% and 83.5% at September 30, 2018 and December 31, 2017, respectively.

Webster Bank is required by OCC regulations to maintain liquidity sufficient to ensure safe and sound operations. Whether liquidity is adequate, as assessed by the OCC, depends on such factors as the overall asset/liability structure, market conditions, competition, and the nature of the institution’s deposit and loan customers. Webster Bank exceeded all regulatory liquidity requirements as of September 30, 2018. The Company has a detailed liquidity contingency plan designed to respond to liquidity concerns in a prompt and comprehensive manner. The plan is designed to provide early detection of potential problems and details specific actions required to address liquidity stress scenarios.

Applicable OCC regulations require Webster Bank, as a commercial bank, to satisfy certain minimum leverage and risk-based capital requirements. As an OCC regulated commercial institution, it is also subject to a minimum tangible capital requirement. As of September 30, 2018, Webster Bank was in compliance with all applicable capital requirements and exceeded the FDIC requirements for a well-capitalized institution. See Note 10:Regulatory Matters in the Notes to Condensed Consolidated Financial Statements contained elsewhere in this report for a further discussion of regulatory requirements applicable to Webster Financial Corporation and Webster Bank.

The liquidity position of the Company is continuously monitored, and adjustments are made to the balance between sources and uses of funds as deemed appropriate. Management is not aware of any events that are reasonably likely to have a material adverse effect on the Company’s liquidity, capital resources, or operations. In addition, management is not aware of any regulatory recommendations regarding liquidity, which, if implemented, would have a material adverse effect on the Company.

Off-Balance Sheet Arrangements

Webster engages in a variety of financial transactions that, in accordance with GAAP, are not recorded in the financial statements or are recorded in amounts that differ from the notional amounts. Such transactions are utilized in the normal course of business, for general corporate purposes or for customer financing needs. Corporate purpose transactions are structured to manage credit, interest rate, and liquidity risks, or to optimize capital. Customer transactions are structured to manage their funding requirements or facilitate certain trade arrangements. These transactions give rise to, in varying degrees, elements of credit, interest rate, and liquidity risk. For the nine months ended September 30, 2018, Webster did not engage in any off-balance sheet transactions that would have a material effect on its financial condition. For additional information, see Note 18:Commitments and Contingencies in the Notes to Condensed Consolidated Financial Statements contained elsewhere in this report.

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Asset/Liability Management and Market Risk

An effective asset/liability management process must balance the risks and rewards from both short and long-term interest rate risks in determining management strategy and action. To facilitate and manage this process, interest rate sensitivity is monitored on an ongoing basis by ALCO. With the latest increase in the federal funds rate target range, interest rates have risen sufficiently for the -200 basis points scenario to be re-instituted effective September 30, 2018.

The following table summarizes the estimated impact that gradual parallel changes in income of 100 and 200 basis points might have on Webster's net interest income (NII) over a twelve month period, starting September 30, 2018 and December 31, 2017 for each subsequent twelve month period as compared to NII assuming no change in interest rates:

NII	-200bp	-100bp	+100bp	+200bp
September 30, 2018	(11.0)%	(4.6)%	3.0%	5.7%
December 31, 2017	N/A	(5.9)%	3.4%	6.4%

The following table summarizes the estimated impact that gradual parallel changes in interest rates of 100 and 200 basis points might have on Webster's pre-tax, pre-provision net revenue (PPNR) over a twelve month period, starting September 30, 2018 and December 31, 2017 for each subsequent twelve month period as compared to PPNR assuming no change in interest rates:

PPNR	-200bp	-100bp	+100bp	+200bp
September 30, 2018	(17.6)%	(7.8)%	4.6%	8.6%
December 31, 2017	N/A	(10.4)%	5.3%	9.9%

Interest rates are assumed to change up or down in a parallel fashion, and NII and PPNR results in each scenario are compared to a flat rate scenario as a base. The flat rate scenario holds the end of period yield curve constant over a twelve month forecast horizon. The flat rate scenario as of September 30, 2018 and December 31, 2017 assumed a Fed Funds rate of 2.25% and 1.50% respectively. This increase in rates resulted in higher NII and PPNR. Asset sensitivity for both NII and PPNR was lower as of September 30, 2018 when compared to December 31, 2017, primarily due to this increase in flat rate scenario income and an increase in fixed mortgage rates which lowered forecast prepayments in mortgage-related investments as well as the maturity and roll forward of long-term, fixed-rate borrowings.

Webster can also hold futures, options, and forward foreign currency contracts to minimize the price volatility of certain assets and liabilities. Changes in the market value of these positions are recognized in earnings.

The following table summarizes the estimated impact that yield curve twists or immediate non-parallel changes in interest rates might have on Webster’s NII for the subsequent twelve month period starting September 30, 2018 and December 31, 2017:

	Short End of the Yield Curve				Long End of the Yield Curve
NII	-100bp	-50bp	+50bp	+100bp	-100bp	-50bp	+50bp	+100bp
September 30, 2018	(7.4)%	(3.4)%	1.8%	3.6%	(3.1)%	(1.4)%	1.0%	1.8%
December 31, 2017	(8.5)%	(4.3)%	2.0%	3.9%	(3.9)%	(1.7)%	1.3%	2.3%

The following table summarizes the estimated impact that immediate non-parallel changes in interest rates might have on Webster’s PPNR for the subsequent twelve month period starting September 30, 2018 and December 31, 2017:

	Short End of the Yield Curve				Long End of the Yield Curve
PPNR	-100bp	-50bp	+50bp	+100bp	-100bp	-50bp	+50bp	+100bp
September 30, 2018	(12.3)%	(5.6)%	2.6%	5.2%	(4.5)%	(2.2)%	1.8%	3.2%
December 31, 2017	(14.8)%	(7.5)%	2.9%	5.7%	(4.8)%	(2.2)%	2.2%	4.0%

The non-parallel scenarios are modeled with the short end of the yield curve moving up or down 50 and 100 basis points, while the long end of the yield curve remains unchanged and vice versa. The short end of the yield curve is defined as terms of less than eighteen months, and the long end as terms of greater than eighteen months. The results above reflect the annualized impact of immediate rate changes.

Sensitivity to increases in the short end of the yield curve for NII and PPNR are less positive as of September 30, 2018 when compared to December 31, 2017 due primarily to higher earnings from higher starting rates and to the maturity and roll forward of long-term fixed-rate borrowings. Sensitivity to decreases in the short end of the yield curve for NII and PPNR are less negative from December 31, 2017 due to the higher rate environment as of September 30, 2018 and the impact of deposit floors. As of September 30, 2018, Webster has greater ability to decrease deposit expense which results in less negative sensitivity results. As market rates have risen, Webster has increased selected deposit rates. NII and PPNR were less sensitive to changes in the long end of the yield curve as of September 30, 2018 when compared to December 31, 2017 due primarily to increased fixed mortgage rates and the reduction in forecast prepayment speeds in mortgage-related investments.

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The following table summarizes the estimated economic value of assets, liabilities, and off-balance sheet contracts at September 30, 2018 and December 31, 2017 and the projected change to economic values if interest rates instantaneously increase or decrease by 100 basis points:

(Dollars in thousands)	Book Value		Estimated Economic Value		Estimated Economic Value Change
					-100 bp			+100 bp
September 30, 2018
Assets	$	27,346,317	$	26,572,536	$	563,121		$	(650,043	)
Liabilities	24,530,119		22,653,216		705,993			(606,331		)
Net	$	2,816,198	$	3,919,320	$	(142,872	)	$	(43,712	)
Net change as % base net economic value					(3.6		)%	(1.1		)%
December 31, 2017
Assets	$	26,487,645	$	25,971,043	$	505,148		$	(631,744	)
Liabilities	23,785,687		22,509,322		729,967			(624,789		)
Net	$	2,701,958	$	3,461,721	$	(224,819	)	$	(6,955	)
Net change as % base net economic value					(6.5		)%	(0.2		)%

Changes in economic value can be best described using duration. Duration is a measure of the price sensitivity of financial instruments for small changes in interest rates. For fixed-rate instruments, it can also be thought of as the weighted-average expected time to receive future cash flows. For floating-rate instruments, it can be thought of as the weighted-average expected time until the next rate reset. The longer the duration, the greater the price sensitivity for given changes in interest rates. Floating-rate instruments may have durations as short as one day and, therefore, have very little price sensitivity due to changes in interest rates. Increases in interest rates typically reduce the value of fixed-rate assets as future discounted cash flows are worth less at higher discount rates. A liability's value decreases for the same reason in a rising rate environment. A reduction in value of a liability is a benefit to Webster.

Duration gap is the difference between the duration of assets and the duration of liabilities. A duration gap near zero implies that the balance sheet is matched and would exhibit no change in estimated economic value for a small change in interest rates. Webster's duration gap was negative 0.7 years at September 30, 2018. At December 31, 2017, the duration gap was negative 0.9 years. A negative duration gap implies that liabilities are longer than assets and, therefore, they have more price sensitivity than assets and will reset their interest rates slower than assets. Consequently, Webster's net estimated economic value would generally be expected to increase when interest rates rise as the benefit of the decreased value of liabilities would more than offset the decreased value of assets. The opposite would generally be expected to occur when interest rates fall. Earnings would also generally be expected to increase when interest rates rise and decrease when interest rates fall over the longer term absent the effects of new business booked in the future. The change in Webster's duration gap is due primarily to the higher starting interest rates and the resulting decrease in forecast prepayment assumptions in mortgage-related investments and roll forward and maturities of borrowings.

These estimates assume that management does not take any action to mitigate any positive or negative effects from changing interest rates. The earnings and economic values estimates are subject to factors that could cause actual results to differ. Management believes that Webster's interest rate risk position at September 30, 2018 represents a reasonable level of risk given the current interest rate outlook. Management, as always, is prepared to act in the event that interest rates do change rapidly.

For a detailed description of the Company's asset/liability management process, refer to the section captioned "Asset/Liability Management and Market Risk" in Item 7. Management's Discussion And Analysis Of Financial Condition And Results Of Operations included in its Form 10-K for the year ended December 31, 2017.

Impact of Inflation and Changing Prices

The Condensed Consolidated Financial Statements and related data presented herein have been prepared in accordance with GAAP, which requires the measurement of financial position and operating results in terms of historical dollars without considering changes in the relative purchasing power of money over time due to inflation.

Unlike most industrial companies, substantially all of the assets and liabilities of a banking institution are monetary in nature. As a result, interest rates have a more significant impact on Webster's performance than the effects of general levels of inflation. Interest rates do not necessarily move in the same direction or in the same magnitude as the price of goods and services.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The required information is set forth above, in Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations, see the section captioned "Asset/Liability Management and Market Risk," which is incorporated herein by reference.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

The Company has performed an evaluation, under the supervision and with the participation of the Company's management, including its Chief Executive Officer and Chief Financial Officer, of the effectiveness of the Company's disclosure controls and procedures, as defined in Rules 13a-15(e) or 15d-15(e) of the Securities Exchange Act of 1934. Based on this evaluation, the Company's Chief Executive Officer and Chief Financial Officer concluded that the Company's disclosure controls and procedures for recording, processing, summarizing, and reporting the information the Company is required to disclose in the reports it files under the Securities Exchange Act of 1934, within the time periods specified in SEC rules and forms, were effective as of September 30, 2018.

Changes in Internal Control over Financial Reporting

There were no changes made to the Company's internal control over financial reporting that occurred during the period covered by this report that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

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PART II - OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

From time to time, Webster and its subsidiaries are subject to certain legal proceedings and claims in the ordinary course of business. Management presently believes that the ultimate outcome of these proceedings, individually and in the aggregate, will not be material to Webster or its consolidated financial position. Webster establishes an accrual for specific legal matters when it determines that the likelihood of an unfavorable outcome is probable and the loss is reasonably estimable. Legal proceedings are subject to inherent uncertainties, and unfavorable rulings could occur that could cause Webster to adjust its litigation accrual or could have, individually or in the aggregate, a material adverse effect on its business, financial condition, or operating results.

ITEM 1A. RISK FACTORS

During the nine months ended September 30, 2018, there were no material changes to the risk factors previously disclosed in Webster's Annual Report on Form 10-K for the year ended December 31, 2017.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Issuer Purchases of Equity Securities

The following table provides information with respect to any purchase of equity securities of Webster Financial Corporation's common stock made by or on behalf of Webster or any "affiliated purchaser," as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934, during the three months ended September 30, 2018:

Period	Total Number of Shares Purchased (1)	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Dollar Amount Available for Repurchase Under the Plans or Programs (1)		Total Number of Warrants Purchased (2)	Average Price Paid Per Warrant
July	81,831	$	63.70	—	$	91,745,715	—	$	—
August	419	67.52		—	91,745,715		—	—
September	5,554	64.12		—	91,745,715		—	—
Total	87,804	63.74		—	91,745,715		—	—

(1) On October 24, 2017, the Company's Board of Directors approved a common stock repurchase program which authorizes management to repurchase, in open market or privately negotiated transactions, subject to market conditions and other factors, up to a maximum of $100 million of common stock. The program will remain in effect until fully utilized or until modified, superseded, or terminated.

All 87,804 shares purchased during the three months ended September 30, 2018 were related to stock compensation plan activity and acquired at market prices, outside of the repurchase program.

(2) On June 3, 2011, the Company announced that, with approval from its Board of Directors, it had repurchased a significant number of the warrants issued as part of Webster's participation in the U.S. Treasury's Capital Purchase Program in a public auction conducted on behalf of the U.S. Treasury. The Board approved plan provides for additional repurchases from time-to-time, as permitted by securities laws and other legal requirements. There remain 8,152 outstanding warrants to purchase a share (1:1) of the Company's common stock, which carry an exercise price of $18.28 per share and expire on November 21, 2018.

Restrictions on Dividends

Holders of the Company's common stock are entitled to receive such dividends as the Board of Directors may declare out of funds legally available for such payments. Also, as a bank holding company, the ability to declare and pay dividends is dependent on certain federal regulatory considerations. See Note 10:Regulatory Matters in the Notes to Condensed Consolidated Financial Statements contained elsewhere in this report for additional information.

The Company has 6,000,000 outstanding Depository Shares, each representing 1/1000th interest in a share of 5.25% Series F Non-Cumulative Perpetual Preferred Stock, par value $.01 per share, with a liquidation preference of $25,000 per share (or $25 per depository share). The Series F Preferred Stock is redeemable at Webster's option, in whole or in part, on December 15, 2022, or any dividend payment date thereafter, or in whole but not in part, upon a "regulatory capital treatment event" as defined in the Prospectus Supplement. The terms of the Series F Preferred Stock prohibit the Company from declaring or paying any cash dividends on its common stock, unless Webster has declared and paid full dividends on the Series F Preferred Stock for the most recently completed dividend period.

74

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

Not applicable

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable

ITEM 5. OTHER INFORMATION

Not applicable

ITEM 6. EXHIBITS

The following is the exhibit index.

Exhibit Number	Exhibit Description	Exhibit Included	Incorporated by Reference
			Form	Exhibit	Filing Date
3	Certificate of Incorporation and Bylaws.
3.1	Fourth Amended and Restated Certificate of Incorporation		10-Q	3.1	8/9/2016
3.2	Certificate of Designations establishing the rights of the Company's 8.50% Series A Non-Cumulative Perpetual Convertible Preferred Stock		8-K	3.1	6/11/2008
3.3	Certificate of Designations establishing the rights of the Company's Fixed Rate Cumulative Perpetual Preferred Stock, Series B		8-K	3.1	11/24/2008
3.4	Certificate of Designations establishing the rights of the Company's Perpetual Participating Preferred Stock, Series C		8-K	3.1	7/31/2009
3.5	Certificate of Designations establishing the rights of the Company's Non-Voting Perpetual Participating Preferred Stock, Series D		8-K	3.2	7/31/2009
3.6	Certificate of Designations establishing the rights of the Company's 6.40% Series E Non-Cumulative Perpetual Preferred Stock		8-A12B	3.3	12/4/2012
3.7	Certificate of Designations establishing the rights of the Company's 5.25% Series F Non-Cumulative Perpetual Preferred Stock		8-A12B	3.3	12/12/2017
3.8	Bylaws, as amended effective June 9, 2014		8-K	3.1	6/12/2014
10.25	Change in Control Agreement, dated July 16, 2018, between Webster Financial Corporation, and Karen Higgins-Carter		10-Q	10.25	8/3/2018
10.26	Non-Solicitation Agreement, dated July 16, 2018, by and between Webster Financial Corporation and Karen Higgins-Carter	X
31.1	Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, signed by the Chief Executive Officer.	X
31.2	Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, signed by the Chief Financial Officer.	X
32.1	Written statement pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, signed by the Chief Executive Officer.	X(1)
32.2	Written statement pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, signed by the Chief Financial Officer.	X(1)
101.INS	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embeded within the Inline XBRL document
101.SCH	XBRL Taxonomy Extension Schema Document	X
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document	X
101.DEF	XBRL Taxonomy Extension Definitions Linkbase Document	X
101.LAB	XBRL Taxonomy Extension Label Linkbase Document	X
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document	X

(1) This exhibit is furnished herewith and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liability of that section, and shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934.

75

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.

		WEBSTER FINANCIAL CORPORATION
		Registrant
Date: November 5, 2018	By:	/s/ John R. Ciulla
		John R. Ciulla
		President and Chief Executive Officer
		(Principal Executive Officer)
Date: November 5, 2018	By:	/s/ Glenn I. MacInnes
		Glenn I. MacInnes
		Executive Vice President and Chief Financial Officer
		(Principal Financial Officer)
Date: November 5, 2018	By:	/s/ Albert J. Wang
		Albert J. Wang
		Senior Vice President and Chief Accounting Officer
		(Principal Accounting Officer)

76

EX-10.26

EXHIBIT 10.26

NON-SOLICITATION AGREEMENT

NON-SOLICITATION AGREEMENT (this "Agreement") by and between Webster Financial Corporation, a Delaware corporation (the "Company"), and Karen Higgins-Carter (the "Executive"), dated as of July 16, 2018 (the "Effective Date").

WHEREAS, in consideration of the Company providing the Executive with change in control severance protection pursuant to the Change in Control Agreement between the Executive and the Company to be effective as of <Effective Date> (the "Change in Control Agreement"), the Executive is entering into this Agreement, which contains provisions that obligate the Executive to comply with certain restrictive covenants while employed by the Company and thereafter; and

NOW, THEREFORE, in consideration of the premises and mutual covenants contained herein and for other good and valuable consideration, the receipt of which is mutually acknowledged, the Company and the Executive (individually a "Party" and together the "Parties") agree as follows:

I. Covenants.

(a) Confidential Information. While employed by the Company and thereafter, the Executive shall hold in a fiduciary capacity for the benefit of the Company all secret or confidential information, knowledge or data relating to the Company or any of its affiliates and their respective businesses, which shall have been obtained by the Executive during the Executive's employment by the Company or any of its affiliates and which shall not be or become public knowledge (other than by acts by the Executive or representatives of the

Executive in violation of this Agreement). After termination of the Executive's employment with

the Company for any reason, the Executive shall not, without the prior written consent of the Company or as may otherwise be required by law or legal process: (i) communicate or divulge any such information, knowledge or data to anyone other than the Company and those

designated by it; or (ii) use to the Executive's advantage or to the detriment of the Company any

such information, knowledge or data. Notwithstanding any provision of this Agreement to the contrary, nothing contained herein is intended to, or shall be interpreted in a manner that does, limit or restrict the Executive from exercising any legally protected whistleblower rights (including pursuant to Rule 21 F under the Securities Exchange Act of 1934).

(b) Non-Recruitment of Employees. During the period of the Executive's employment with the Company and its subsidiaries and the additional period ending on the first anniversary of the date of termination of the Executive's employment for any reason (the "Restricted Period"), the Executive shall not, without the prior written consent of the Company, directly or indirectly, (i) offer employment (or a consulting, agency, independent contractor or other similar paid position) to any person who is or was at any time during the six months prior to such offer an employee, representative, officer or director of the Company or any of its subsidiaries or (ii) induce, encourage or solicit any such person to accept employment (or any aforesaid position) with any company or entity with which the Executive is then employed or otherwise affiliated. Further, during the Restricted Period, the Executive shall not encourage or

induce any employee, representative, officer or director of the Company or any of its subsidiaries

to cease their relationship with the Company or any of its subsidiaries for any reason. This Section I (b) shall not apply to solicitation, recruitment, encouragement, inducement or termination during the period of Executive's employment with the Company and on behalf of the Company or any of its subsidiaries.

(c) No Solicitation of Clients or Customers. During the Restricted Period, the Executive shall not, directly or indirectly, for the purpose of providing services or products that are competitive with those provided by the Company and its subsidiaries solicit the business of (i) any active client or customer of the Company or any of its subsidiaries, or (ii) any person or entity who is or was at any time during the six months prior to such solicitation a client or customer of the Company or any of its subsidiaries.

(d) Remedies. The Executive acknowledges and agrees that the terms of Section I: (i) are reasonable in light of all of the circumstances, (ii) are sufficiently limited to protect the legitimate interests of the Company and its subsidiaries, (iii) impose no undue hardship on the Executive and (iv) are not injurious to the public. The Executive further acknowledges and

agrees that: (A) the Executive's breach of the provisions of Section I will cause the Company

irreparable harm, which likely cannot be adequately compensated by money damages, and (8) if the Company elects to prevent the Executive from breaching such provisions by obtaining an injunction against the Executive, there is a reasonable probability of the Company's eventual success on the merits. The Executive consents and agrees that if the Executive commits any such breach or threatens to commit any breach, the Company shall be entitled to temporary, preliminary, and/or permanent injunctive relief from a court of competent jurisdiction, without posting any bond or other security and without the necessity of proof of actual damage, in addition to, and not in lieu of, such other remedies as may be available to the Company for such breach, including the recovery of money damages. If any of the provisions of Section I are determined to be wholly or partially unenforceable, the Executive hereby agrees that this Agreement or any provision hereof may be reformed so that it is enforceable to the maximum extent permitted by law; and in the case when such provision is not capable of being reformed, it shall be severed and all remaining provisions of this Agreement shall be enforced. If any of the provisions of this Section I are determined to be wholly or partially unenforceable in any jurisdiction, such determination shall not be a bar to or in any way diminish the Company's right to enforce any such covenant in any other jurisdiction.

2. Successors.

(a) This Agreement is personal to the Executive and without the prior written consent of the Company shall not be assignable by the Executive other than by will or the laws of descent and distribution. This Agreement shall inure to the benefit of and be binding upon the Company and its successors and assigns. For purposes hereof, the term "affiliate" shall mean any entity controlled by, controlling or under common control with the Company.

(b) As used in this Agreement, "Company" shall mean the Company as hereinbefore defined and any successor to its business and/or assets as aforesaid which assumes and agrees to perform this Agreement by operation of law, or otherwise.

3. Miscellaneous.

(a) This Agreement shall be governed by and construed in accordance with the laws of the State of Connecticut, without reference to principles of conflict oflaws. The Parties hereto irrevocably agree to submit to the jurisdiction and venue of the courts of the State of

Connecticut, in any action or proceeding brought with respect to or in connection with this

Agreement. The captions of this Agreement are not part of the provisions hereof and shall have no force or effect. This Agreement may not be amended or modified otherwise than by a written agreement executed by the Parties hereto or their respective successors and legal representatives.

(b) All notices and other communications hereunder shall be in writing and shall be given by hand delivery to the other Party or by registered or certified mail, return receipt requested, postage prepaid, addressed as follows:

If to the Executive:

At the most recent address on file for the Executive at the Company. If to the Company:

Webster Financial Corporation

Webster Plaza

145 Bank Street

Waterbury, Connecticut 06702

Attention: General Counsel

or to such other address as either Party shall have furnished to the other in writing in accordance herewith. Notice and communications shall be effective when actually received by the addressee.

(c) The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

(d) The Company's failure to insist upon strict compliance with any provision of this Agreement or the failure to assert any right the Company may have hereunder shall not be deemed to be a waiver of such provision or right or any other provision or right of this Agreement.

(e) From and after the Effective Date, this Agreement shall supersede any other agreement between the Parties with respect to the subject matter hereof. This Agreement shall terminate and be ofno further force and effect from and after the "Effective Date" of the Change in Control Agreement (as the term "Effective Date" is defined in the Change in Control Agreement).

IN WITNESS WHEREOF, the Executive has hereunto set the Executive's hand and, pursuant to the authorization from the Compensation Committee of its Board of Directors, the Company has caused these presents to be executed in its name and on its behalf, all as of the day and year first above written.

/s/ Karen Higgins-Clarke

    EXECUTIVE

WEBSTER FINANCIAL CORPORATION

By: /s/ John R. Ciulla

Name: John R. Ciulla

Title: President & CEO

EX-31.1

EXHIBIT 31.1

CERTIFICATION

I, John R. Ciulla, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Webster Financial Corporation;

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: November 5, 2018

/s/ John R. Ciulla

John R. Ciulla

President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION

I, Glenn I. MacInnes, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Webster Financial Corporation;

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: November 5, 2018

/s/ Glenn I. MacInnes

Glenn I. MacInnes

Executive Vice President and Chief Financial Officer

(Principal Financial Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Webster Financial Corporation (the “Company”) hereby certifies that, to his knowledge on the date hereof:

(a) the Form 10-Q Report of the Company for the quarter ended September 30, 2018 filed on the date hereof with the Securities and Exchange Commission (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

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

Date: November 5, 2018

/s/ John R. Ciulla

John R. Ciulla

President and Chief Executive Officer

Pursuant to Securities and Exchange Commission Release 33-8238, dated June 5, 2003, this certification is being furnished and shall not be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended or incorporated by reference in any registration statement of the Company filed under the Securities Act of 1933, as amended, except to the extent that the Company specifically incorporates it by reference.

A signed original of this written statement required by Section 906 of the Sarbanes Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

EXHIBIT 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Webster Financial Corporation (the “Company”) hereby certifies that, to his knowledge on the date hereof:

(a) the Form 10-Q Report of the Company for the quarter ended September 30, 2018 filed on the date hereof with the Securities and Exchange Commission (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

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

Date: November 5, 2018

/s/ Glenn I. MacInnes

Glenn I. MacInnes

Executive Vice President and Chief Financial Officer

(Principal Financial Officer)

Pursuant to Securities and Exchange Commission Release 33-8238, dated June 5, 2003, this certification is being furnished and shall not be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended or incorporated by reference in any registration statement of the Company filed under the Securities Act of 1933, as amended, except to the extent that the Company specifically incorporates it by reference.

A signed original of this written statement required by Section 906 of the Sarbanes Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 31, 2018
Document and Entity Information [Abstract]
Document Period End Date	Sep. 30, 2018
Document Type	10-Q
Amendment Flag	false
Entity Registrant Name	WEBSTER FINANCIAL CORPORATION
Entity Common Stock, Shares Outstanding		92,236,627
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Trading Symbol	WBS
Entity Central Index Key	0000801337
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets:
Cash and due from banks	$ 222,234	$ 231,158
Interest-bearing deposits	99,746	25,628
Investment securities available-for-sale, at fair value	2,823,953	2,638,037
Investment securities held-to-maturity (fair value of $4,164,359 and $4,456,350)	4,332,458	4,487,392
Federal Home Loan Bank and Federal Reserve Bank stock	133,740	151,566
Loans held for sale, fair value option	17,137	20,888
Loans and leases	18,321,019	17,523,858
Allowance for loan and lease losses	(211,832)	(199,994)
Loans and leases, net	18,109,187	17,323,864
Deferred tax assets, net	92,910	92,630
Premises and equipment, net	128,507	130,001
Goodwill	538,373	538,373
Other intangible assets, net	26,726	29,611
Cash surrender value of life insurance policies	539,923	531,820
Accrued interest receivable and other assets	281,423	286,677
Total assets	27,346,317	26,487,645
Liabilities and shareholders' equity:
Noninterest-bearing Deposit Liabilities	4,231,505	4,191,496
Interest-bearing Deposit Liabilities	17,766,118	16,802,233
Total deposits	21,997,623	20,993,729
Securities sold under agreements to repurchase and other borrowings	564,488	643,269
Federal Home Loan Bank advances	1,441,884	1,677,105
Long-term debt	225,957	225,767
Accrued expenses and other liabilities	300,167	245,817
Total liabilities	24,530,119	23,785,687
Shareholders’ equity:
Common stock, $.01 par value: Authorized - 200,000,000 shares: Issued (93,651,601 shares)	937	937
Paid-in capital	1,114,848	1,122,164
Retained earnings	1,761,036	1,595,762
Treasury stock, at cost (1,536,554 and 1,658,526 shares)	(74,096)	(70,430)
Accumulated other comprehensive loss, net of tax	(131,564)	(91,531)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,816,198	2,701,958
Total liabilities and shareholders' equity	27,346,317	26,487,645
Series F Preferred Stock [Member]
Shareholders’ equity:
Preferred stock, $.01 par value; Authorized - 3,000,000 shares: Series E issued and outstanding (5,060 shares)	$ 145,037	$ 145,056

XML

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Securities held-to-maturity ,fair value	$ 4,164,359	$ 4,456,350
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	3,000,000	3,000,000
Preferred stock, shares issued (in shares)	6,000	5,060
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)		93,680,291
Treasury stock ,shares (in shares)	1,536,554	1,658,526
Common Stock [Member]
Common stock, shares issued (in shares)	93,680,724

XML

Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest Income:
Interest and fees on loans and leases	$ 215,448	$ 181,130	$ 616,488	$ 523,394
Taxable interest and dividends on investments	47,646	43,819	142,361	136,167
Non-taxable interest on investment securities	5,061	5,765	15,428	17,103
Loans held for sale	208	307	498	826
Total interest income	268,363	231,021	774,775	677,490
Interest Expense:
Deposits	24,397	16,760	62,778	44,874
Securities sold under agreements to repurchase and other borrowings	3,084	3,847	10,722	10,970
Federal Home Loan Bank advances	7,685	6,894	23,437	22,543
Long-term debt	2,825	2,616	8,288	7,748
Total interest expense	37,991	30,117	105,225	86,135
Net interest income	230,372	200,904	669,550	591,355
Provision for loan and lease losses	10,500	10,150	32,000	27,900
Net interest income after provision for loan and lease losses	219,872	190,754	637,550	563,455
Non-interest Income:
Deposit service fees	40,601	38,321	121,911	113,519
Loan and lease related fees	10,782	6,346	24,111	19,898
Wealth and investment services	8,412	7,750	24,738	22,900
Mortgage banking activities	1,305	2,421	3,684	8,038
Increase in cash surrender value of life insurance policies	3,706	3,720	10,921	10,943
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	0	0	0	(126)
Other income	7,478	7,288	24,040	18,267
Total non-interest income	72,284	65,846	209,405	193,439
Non-interest Expense:
Compensation and benefits	96,640	88,395	284,457	262,288
Occupancy	14,502	14,744	45,489	46,957
Technology and equipment	24,553	22,580	73,019	66,646
Intangible assets amortization	961	1,002	2,885	3,085
Marketing	4,052	4,045	12,493	14,101
Professional and outside services	4,930	4,030	14,099	11,813
Deposit insurance	9,694	6,344	30,098	19,701
Other expense	23,451	20,683	68,317	65,435
Total non-interest expense	178,783	161,823	530,857	490,026
Income (loss) before income tax expense	113,373	94,777	316,098	266,868
Income tax expense	13,700	30,281	54,518	81,322
Net income	99,673	64,496	261,580	185,546
Preferred stock dividends and other	(2,213)	(2,070)	(6,540)	(6,284)
Earnings applicable to common shareholders	$ 97,460	$ 62,426	$ 255,040	$ 179,262
Earnings per common share:
Basic (in dollars per share)	$ 1.06	$ 0.68	$ 2.77	$ 1.95
Diluted (in dollars per share)	$ 1.06	$ 0.67	$ 2.77	$ 1.94

XML

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 99,673	$ 64,496	$ 261,580	$ 185,546
Other comprehensive (loss) income (OCL) OCI, net of tax:
Total securities available-for-sale	(13,811)	872	(50,481)	1,847
Total derivative instruments	1,635	1,111	5,837	2,921
Total defined benefit pension and other postretirement benefit plans	2,548	1,001	4,611	3,127
Other comprehensive (loss) income, net of tax	(9,628)	2,984	(40,033)	7,895
Comprehensive income	$ 90,045	$ 67,480	$ 221,547	$ 193,441

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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Series E Preferred Stock [Member]	Series F Preferred Stock [Member]	Preferred Stock [Member]	Preferred Stock [Member] Series F Preferred Stock [Member]	Common Stock [Member]	Paid-In Capital [Member]	Retained Earnings [Member]	Retained Earnings [Member] Series E Preferred Stock [Member]	Retained Earnings [Member] Series F Preferred Stock [Member]	Treasury Stock, at cost [Member]	AOCI Attributable to Parent [Member]
Beginning Balance at Dec. 31, 2016	$ 2,527,012			$ 122,710		$ 937	$ 1,125,937	$ 1,425,320			$ (70,899)	$ (76,993)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	185,546							185,546
Other comprehensive loss, net of tax	7,895											7,895
Dividends and dividend equivalents declared on common stock	(70,972)						124	(71,096)
Dividends on preferred stock		$ (6,072)							$ (6,072)
Stock-based compensation	10,957						0	1,887			9,070
Exercise of stock options	5,301						(2,376)				7,677
Common shares acquired from stock compensation plan activity	(9,295)										(9,295)
Common stock repurchase program	(11,585)										(11,585)
Ending Balance at Sep. 30, 2017	2,638,787			122,710		937	1,123,685	1,535,585			(75,032)	(69,098)
Beginning Balance at Jun. 30, 2017												(72,082)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	64,496
Other comprehensive loss, net of tax	2,984											2,984
Ending Balance at Sep. 30, 2017	2,638,787			122,710		937	1,123,685	1,535,585			(75,032)	(69,098)
Beginning Balance at Dec. 31, 2017	2,701,958			145,056		937	1,122,164	1,595,762			(70,430)	(91,531)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	261,580							261,580
Other comprehensive loss, net of tax	(40,033)											(40,033)
Dividends and dividend equivalents declared on common stock	(84,903)						99	(85,002)
Dividends on preferred stock		$ 22	$ (5,906)						$ 22	$ (5,906)
Stock-based compensation	8,598						(1,541)	2,426			7,713
Exercise of stock options	2,110						(5,308)				7,418
Stock Issued During Period, Value, Conversion of Units	0						(566)	(6,484)			7,050
Common shares acquired from stock compensation plan activity	(13,689)										(13,689)
Common stock repurchase program	(12,158)										(12,158)
Ending Balance at Sep. 30, 2018	2,816,198			145,037		937	1,114,848	1,761,036			(74,096)	(131,564)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, Other			$ (19)		$ (19)
Beginning Balance at Jun. 30, 2018												(121,936)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	99,673
Other comprehensive loss, net of tax	(9,628)											(9,628)
Ending Balance at Sep. 30, 2018	2,816,198			$ 145,037		$ 937	$ 1,114,848	1,761,036			$ (74,096)	$ (131,564)
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (1,362)							$ (1,362)

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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Dividends on common stock and dividend equivalents declared (in dollars per share)	$ 0.92	$ 0.77
Series E Preferred Stock [Member]
Dividends on preferred stock (in dollars per share)		$ 1,200
Series F Preferred Stock [Member]
Dividends on preferred stock (in dollars per share)	$ 995.3125

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating Activities:
Net income	$ 261,580	$ 185,546
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	32,000	27,900
Deferred tax expense (benefit)	13,138	(3,241)
Depreciation and amortization	28,991	28,060
Amortization of premium/discount on earning assets and funding, net	38,905	33,338
Stock-based compensation	8,598	9,050
Gain on sale, net of write-down, on foreclosed and repossessed assets	(745)	(551)
Write-down, net on premises and equipment	295	218
Impairment loss on investment securities recognized in earnings	0	126
Increase in cash surrender value of life insurance policies	(10,921)	(10,943)
Gain from life insurance policies	(1,453)	0
Mortgage banking activities	(3,684)	(8,038)
Proceeds from sale of loans held for sale	147,105	262,029
Origination of loans held for sale	(141,699)	(227,435)
Net decrease in derivative contract assets net of liabilities	130,250	11,235
Net increase in accrued interest receivable and other assets	(9,506)	(19,405)
Net increase in accrued expenses and other liabilities	3,529	12,386
Net cash provided by operating activities	496,383	300,275
Investing Activities:
Net (increase) decrease in interest-bearing deposits	(74,118)	2,469
Purchases of available for sale investment securities	(760,575)	(305,309)
Proceeds from maturities and principal payments of available for sale investment securities	445,704	695,595
Purchases of held-to-maturity investment securities	(283,770)	(887,240)
Proceeds from maturities and principal payments of held-to-maturity investment securities	414,487	525,499
Net proceeds of Federal Home Loan Bank stock	17,826	58,306
Alternative investments return of capital, net	231	107
Net increase in loans	(826,400)	(446,454)
Proceeds from loans not originated for sale	674	7,445
Proceeds from life insurance policies	4,271	746
Proceeds from the sale of foreclosed and repossessed assets	7,046	5,651
Proceeds from the sale of premises and equipment	0	2,182
Additions to premises and equipment	(25,481)	(20,034)
Proceeds from redemption of other assets	0	7,581
Net cash used for investing activities	(1,080,105)	(353,456)
Financing Activities:
Net increase in deposits	1,003,445	1,551,987
Proceeds from Federal Home Loan Bank advances	5,225,000	9,245,000
Repayments of Federal Home Loan Bank advances	(5,460,221)	(10,580,218)
Net decrease in securities sold under agreements to repurchase and other borrowings	(78,781)	(46,624)
Dividends paid to common shareholders	(85,002)	(70,732)
Dividends paid to preferred shareholders	(5,906)	(6,072)
Exercise of stock options	2,110	5,301
Common stock repurchase program	(12,158)	(11,585)
Common shares purchased related to stock compensation plan activity	(13,689)	(9,295)
Net cash (used for) provided by financing activities	574,798	77,762
Net decrease in cash and due from banks	(8,924)	24,581
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Beginning of Period	231,158	190,663
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents End of Period	222,234	215,244
Supplemental disclosure of cash flow information:
Interest paid	104,861	85,242
Income taxes paid	51,237	78,832
Noncash investing and financing activities:
Real Estate Owned, Transfer to Real Estate Owned	5,548	6,503
Transfer of loans from portfolio to loans-held-for-sale	$ 482	$ 0

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation and Significant Accounting Policies [Text Block]

Summary of Significant Accounting Policies

Nature of Operations

Webster Financial Corporation is a bank holding company and financial holding company under the Bank Holding Company Act, incorporated under the laws of Delaware in 1986 and headquartered in Waterbury, Connecticut. At September 30, 2018, Webster Financial Corporation's principal asset is all of the outstanding capital stock of Webster Bank, National Association (Webster Bank).

Webster delivers financial services to individuals, families, and businesses primarily within its regional footprint from New York to Massachusetts. Webster provides business and consumer banking, mortgage lending, financial planning, trust, and investment services through banking offices, ATMs, mobile banking, and its internet website (www.websterbank.com or www.wbst.com). Webster also offers equipment financing, commercial real estate lending, and asset-based lending primarily across the Northeast. On a nationwide basis, through its HSA Bank division, Webster Bank offers and administers health savings accounts, flexible spending accounts, health reimbursement accounts, and commuter benefits.

Basis of Presentation

The accounting and reporting policies of the Company that materially affect its financial statements conform with U.S. Generally Accepted Accounting Principles (GAAP). The accompanying unaudited Condensed Consolidated Financial Statements of the Company have been prepared in conformity with the instructions for Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all the information and notes required by GAAP for complete financial statements and should be read in conjunction with the Company's Consolidated Financial Statements, and Notes thereto, for the year ended December 31, 2017, included in the Company's Annual Report on Form 10-K filed with the U.S. Securities and Exchange Commission (SEC) on March 1, 2018.

Use of Estimates

The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities as of the date of the financial statements as well as income and expense during the period. Actual results could differ from those estimates. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for the full year or any future period.

Federal Deposit Insurance Corporation (FDIC) Assessment.

Reclassification of certain loans under existing and modified FDIC loan category classifications resulted in an obligation for additional FDIC premiums for the period June 30, 2015 through December 31, 2017. An initial accrual of approximately $7.2 million was made in the second quarter to establish an expected liability at June 30, 2018. During the third quarter, the Company made a $10.0 million payment to the FDIC to resolve its obligation.

Accounting Standards Adopted During 2018

Effective January 1, 2018, the following new Accounting Standards Updates (ASUs) were adopted by the Company:

ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.

The Update shortens the amortization period for certain investments in callable debt securities purchased at a premium by requiring that the premium be amortized to the earliest call date. Prior to adoption, the Company amortized the premium as a yield adjustment over the contractual life of such debt securities held within the portfolio. The Update accelerates the Company's recognition of premium amortization on those debt securities.

The Company adopted the Update during the first quarter of 2018 on a modified retrospective basis. As a result, the Company recorded a $2.8 million cumulative-effect adjustment directly to retained earnings as of January 1, 2018.

ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715) - Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.

The Update requires the Company to retrospectively report service cost as a part of compensation expense and the other components of net periodic benefit cost separately from service cost in the Company's consolidated financial statements. The Company previously included all components of net periodic benefit cost as a component of compensation and benefits expense. Upon adoption, only service cost remains in compensation and benefits expense, while the interest cost on benefit obligations, expected return on plan assets, amortization of prior service cost, and recognized net loss components of the net periodic benefit cost are included in other expense.

The Company adopted the Update during the first quarter of 2018 on a retrospective basis. As a result, the Company reclassified, for prior periods, the components of it's net periodic benefit costs other than the service cost component from compensation and benefits to other expense in the accompanying Condensed Consolidated Statements of Income. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

ASU No. 2016-15, Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments.

The Update addresses the following eight specific cash flow issues, with the objective of reducing the existing diversity in practice: debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle.

The Company adopted the Update during the first quarter of 2018 on a retrospective basis. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10) - Recognition and Measurement of Financial Assets and Financial Liabilities, and ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10) - Recognition and Measurement of Financial Assets and Financial Liabilities.

The Updates included targeted amendments in connection with the recognition, measurement, presentation, and disclosure of financial instruments. The main provisions require investments in equity securities to be measured at fair value through net income, unless they qualify for a practical expedient, and require fair value changes arising from changes in instrument-specific credit risk for financial liabilities that are measured under the fair value option to be recognized in other comprehensive income. The provisions also emphasized the existing requirement to use exit prices to measure fair value for disclosure purposes.

The Company adopted the Updates during the first quarter of 2018 primarily on a modified retrospective basis. As a result, the Company recorded a benefit of $1.4 million for a cumulative-effect adjustment directly to retained earnings as of January 1, 2018, due to a change in valuation method, from cost less impairment, to net asset value using the practical expedient. Also, the measurement alternative has been elected for equity securities, existing as of January 1, 2018, without readily determinable fair values on a prospective basis.

ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) and subsequent ASUs issued to clarify this Topic.

The Update, and subsequent related updates, establish a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most previous revenue recognition guidance, including industry-specific guidance. The Updates are intended to increase comparability across industries. The core principle of the revenue model is that a company will recognize revenue when it transfers control of goods or services to customers, at an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services.

The Company adopted the Updates during the first quarter of 2018 on a modified retrospective transition approach. The Company did not identify any material changes to the timing of revenue recognition. The Company is changing how it presents certain recurring revenue streams associated with wealth and investment services as other income, versus a contra expense. The adoption of this guidance did not have a material impact on the Company's financial condition or results of operations, and there was no cumulative effect adjustment to opening retained earnings as no material changes were identified in the timing of revenue recognition, however, additional disclosure has been incorporated in Note 17:Revenue from Contracts with Customers.

Accounting Standards Issued But Not Yet Adopted

The following list identifies ASUs applicable to the Company that have been issued by the FASB but are not yet effective:

ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract

The Update aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The updated guidance also requires an entity to amortize the capitalized implementation costs as an expense over the term of the hosting arrangement and to present in the same income statement line item as the fees associated with the hosting arrangement.

This Update is effective for the Company on January 1, 2020, with early adoption permitted. The Company does not intend to early adopt this Update. The Company will apply the amendments in this update prospectively to all implementation costs incurred after the date of adoption. The Company does not expect this Update to have a material impact on its consolidated financial statements.

ASU No. 2018-14, Compensation-Retirement Benefits - Defined Benefit Plan - General (Subtopic 715-20) - Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans  

The Update modifies the disclosure requirements for defined benefit pension plans and other postretirement plans. This updated guidance will be effective for the Company on January 1, 2021. The Company does not expect this Update to have a material impact on its consolidated financial statements.

ASU No. 2018-13, Fair Value Measurement (Topic 820) - Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement

The Update modifies the disclosure requirements on fair value measurements. The updated guidance will no longer require entities to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy. However, it will require public companies to disclose changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 measurements.

This Update is effective for the Company on January 1, 2020, and earlier adoption is permitted. The Company does not expect this Update to have a material impact on its consolidated financial statements.

ASU No. 2017-12, Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities.

The purpose of the Update is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. The update requires a modified retrospective transition method in which a Company will recognize a cumulative effect of the change on the opening balance for each affected component of equity in the financial statements as of the date of adoption.

The Update is effective for the Company on January 1, 2019. The Company does not expect the new guidance to have a material impact on its consolidated financial statements.

ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.

The Update simplifies quantitative goodwill impairment testing by requiring entities to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for any amount by which the carrying amount exceeds the reporting unit's fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit.

This changes current guidance by eliminating the second step of the goodwill impairment analysis which involves calculating the implied fair value of goodwill determined in the same manner as the amount of goodwill recognized in a business combination upon acquisition. Entities will still have the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary.

The Update is effective for the Company on January 1, 2020 and early adoption is permitted. The Update must be applied prospectively. The Company does not expect the new guidance to have a material impact on its consolidated financial statements.

ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments.

Current GAAP requires an incurred loss methodology for recognizing credit losses. This approach delays recognition until it is probable a loss has been incurred. Both financial institutions and users of their financial statements expressed concern that current GAAP restricts the ability to record credit losses that are expected, but do not yet meet the probable threshold.

The main objective of this Update is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. To achieve this objective, the amendments in this Update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to determine credit loss estimates.

The Change from an incurred loss method to an expected loss method represents a fundamental shift from existing GAAP and may result in a material increase to the Company's accounting for credit losses on financial instruments. To prepare for implementation of the new standard the Company has established a project lead and has empowered a cross functional steering committee comprised of members from different disciplines including Credit, Finance and Treasury as well as specific working groups to focus on key components of the development process. Through these working groups, the Company has begun to evaluate the effect that this Update will have on its financial statements and related disclosures. An implementation project plan has been created and is made up of targeted work streams focused on credit models, data management, treasury, and accounting. These work streams are collectively assessing required resources, use of existing and new models, and data availability. The Company expects that the new credit models will include additional assumptions used to calculate credit losses over the estimated life of the financial assets and will include expected future changes in macroeconomic conditions. The Company contracted with system solution providers and is in the process of implementing the selected solutions that will be used to run its credit loss models.

The Update is effective for the Company on January 1, 2020. The impact of adopting the Update is expected to be influenced by assessment of the composition, characteristics, and credit quality of our loan and securities portfolios as well as the economic conditions in effect at the adoption date. Therefore, we are unable to reasonably estimate the impact of adopting the Update at this time.

ASU No. 2016-02, Leases (Topic 842) and subsequent ASUs issued to amend this Topic.

The Update introduces a lessee model that requires substantially all leases to be recorded as assets and liabilities on the balance sheet and will require both quantitative and qualitative disclosures regarding key information about leasing arrangements. During Q3 2018, the FASB issued a subsequent Update which, among other issues, incorporates a new transition method option that would allow the Company to use the effective date, January 1, 2019 for the Company, as the date of initial application of the new leases standard and recognize cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Company currently expects to elect this transition method.

The Company is in the process of reviewing its existing leases, and certain service contracts for embedded leases, to evaluate the impact of these Updates on the consolidated financial statements. The Company has engaged a third party consultant to assist with the implementation efforts and has selected a third party software solution to assist with the accounting under these Updates.

The Updates are effective beginning January 1, 2019 and early adoption is permitted. The Company does not plan to early adopt, and the effect of the adoption will depend on the lease portfolio at the time of transition.

SEC’s Final Rule on Disclosure Update and Simplification

The Securities and Exchange Commission (the “SEC”) recently adopted the Final Rule, Disclosure Update and Simplification, that amends certain of the SEC’s disclosure requirements to reduce redundant, duplicative, or outdated disclosures due to changes in U.S. GAAP, International Financial Reporting Standards, or changes in technology or the business environment. While most of the amendments included in the SEC’s Final Rule eliminate certain disclosure requirements, one amendment will require expanded interim disclosures for stockholders’ equity and which would include disclosures of dividends per share for each class of share rather than only for common stock, as well as disclosure for changes in stockholders’ equity in interim periods. This Final Rule will be effective for all filings submitted on or after November 5, 2018. However, after the issuance of the Final Rule, the SEC published an interpretation that provides an extended transition period for companies to comply with the new interim disclosure requirement. The Company will comply with the new interim disclosure requirement when it files its first quarter 2019 Form 10-Q and does not expect the new disclosure requirement to have a material impact on its financial statements.

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Variable Interest Entities

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Variable Interest Entities

Variable Interest Entities

The Company has an investment interest in the following entities that meet the definition of a variable interest entity (VIE).

Consolidated

Rabbi Trust. The Company established a Rabbi Trust to meet the obligations due under its Deferred Compensation Plan for Directors and Officers and to mitigate the expense volatility of the aforementioned plan. The funding of the Rabbi Trust and the discontinuation of the Deferred Compensation Plan for Directors and Officers occurred during 2012.

Investments held in the Rabbi Trust primarily consist of mutual funds that invest in equity and fixed income securities. The Company is considered the primary beneficiary of the Rabbi Trust as it has the power to direct the activities of the Rabbi Trust that significantly affect the VIE's economic performance and it has the obligation to absorb losses of the VIE that could potentially be significant to the VIE.

The Company consolidates the invested assets of the trust along with the total deferred compensation obligations and includes them in accrued interest receivable and other assets, and accrued expenses and other liabilities, respectively, in the accompanying Condensed Consolidated Balance Sheets. Earnings in the Rabbi Trust, including appreciation or depreciation, are reflected as other non-interest income, and changes in the corresponding liability are reflected as compensation and benefits, in the accompanying Condensed Consolidated Statements of Income. See Note 13:Fair Value Measurements for additional information.

Non-Consolidated

Securitized Investments. The Company, through normal investment activities, makes passive investments in securities issued by VIEs for which Webster is not the manager. The investment securities consist of Agency CMO, Agency MBS, Agency CMBS, CMBS, and CLO. The Company has not provided financial or other support with respect to these investment securities other than its original investment. For these investment securities, the Company determined it is not the primary beneficiary due to the relative size of its investment in comparison to the principal amount of the structured securities issued by the VIEs, the level of credit subordination which reduces the Company’s obligation to absorb losses or right to receive benefits and its inability to direct the activities that most significantly impact the economic performance of the VIEs. The Company’s maximum exposure to loss is limited to the amount of its investment in the VIEs. See Note 3:Investment Securities for additional information.

Tax Credit - Finance Investments. The Company makes equity investments in entities that finance affordable housing and other community development projects and provide a return primarily through the realization of tax benefits. In most instances the investments require the funding of capital commitments in the future. While the Company's investment in an entity may exceed 50% of its outstanding equity interests, the entity is not consolidated as Webster is not involved in its management. For these investments, the Company determined it is not the primary beneficiary due to its inability to direct the activities that most significantly impact the economic performance of the VIEs. The Company applies the proportional amortization method to account for its investments in qualified affordable housing projects.

At September 30, 2018 and December 31, 2017, the aggregate carrying value of the Company's tax credit-finance investments were $30.0 million and $33.5 million, respectively. At September 30, 2018 and December 31, 2017, unfunded commitments have been recognized, totaling $10.7 million and $17.3 million, respectively, and are included in accrued expenses and other liabilities in the accompanying Condensed Consolidated Balance Sheets.

Webster Statutory Trust. The Company owns all the outstanding common stock of Webster Statutory Trust, a financial vehicle that has issued, and in the future may issue, trust preferred securities. The trust is a VIE in which the Company is not the primary beneficiary. The trust's only assets are junior subordinated debentures issued by the Company, which were acquired by the trust using the proceeds from the issuance of the trust preferred securities and common stock. The junior subordinated debentures are included in long-term debt in the accompanying Condensed Consolidated Balance Sheets, and the related interest expense is reported as interest expense on long-term debt in the accompanying Condensed Consolidated Statements of Income.

Other Investments. The Company invests in various alternative investments in which it holds a variable interest. These investments are non-public entities which cannot be redeemed since the Company’s investment is distributed as the underlying equity is liquidated. For these investments, the Company has determined it is not the primary beneficiary due to its inability to direct the activities that most significantly impact the economic performance of the VIEs.

At September 30, 2018 and December 31, 2017, the aggregate carrying value of the Company's other investments in VIEs were $16.4 million and $13.8 million, respectively, and the total exposure of the Company's other investments in VIEs, including unfunded commitments, were $28.7 million and $22.9 million, respectively.

The Company's equity interests in Tax Credit-Finance Investments, Webster Statutory Trust, and Other Investments are included in accrued interest receivable and other assets in the accompanying Condensed Consolidated Balance Sheets. For a description of the Company's accounting policy regarding the consolidation of VIEs, refer to Note 1 to the Consolidated Financial Statements included in its Form 10-K, for the year ended December 31, 2017.

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Investment Securities

9 Months Ended

Sep. 30, 2018

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment Securities

A summary of the amortized cost and fair value of investment securities is presented below:

	At September 30, 2018									At December 31, 2017
(In thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value		Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Available-for-sale:
U.S. Treasury Bills	$	9,215	$	—	$	(1	)	$	9,214	$	1,247	$	—	$	—		$	1,247
Agency CMO	254,549		79		(8,162		)	246,466		308,989		1,158		(3,814		)	306,333
Agency MBS	1,466,973		641		(57,883		)	1,409,731		1,124,960		2,151		(19,270		)	1,107,841
Agency CMBS	610,411		—		(39,862		)	570,549		608,276		—		(20,250		)	588,026
CMBS	404,104		850		(52		)	404,902		358,984		2,157		(74		)	361,067
CLO	127,743		202		(284		)	127,661		209,075		910		(134		)	209,851
Single issuer-trust preferred	—		—		—			—		7,096		—		(46		)	7,050
Corporate debt	56,032		361		(963		)	55,430		56,504		797		(679		)	56,622
Available-for-sale	$	2,929,027	$	2,133	$	(107,207	)	$	2,823,953	$	2,675,131	$	7,173	$	(44,267	)	$	2,638,037
Held-to-maturity:
Agency CMO	$	218,351	$	143	$	(9,192	)	$	209,302	$	260,114	$	664	$	(4,824	)	$	255,954
Agency MBS	2,535,043		8,256		(110,035		)	2,433,264		2,569,735		16,989		(37,442		)	2,549,282
Agency CMBS	672,505		—		(28,222		)	644,283		696,566		—		(10,011		)	686,555
Municipal bonds and notes	684,587		804		(26,487		)	658,904		711,381		8,584		(6,558		)	713,407
CMBS	221,969		380		(3,746		)	218,603		249,273		2,175		(620		)	250,828
Private Label MBS	3		—		—			3		323		1		—			324
Held-to-maturity	$	4,332,458	$	9,583	$	(177,682	)	$	4,164,359	$	4,487,392	$	28,413	$	(59,455	)	$	4,456,350

Other-Than-Temporary Impairment

The amount in the amortized cost columns in the table above includes other-than-temporary impairment (OTTI) related to certain CLO positions that were previously considered Covered Funds as defined by Section 619 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (Dodd-Frank Act), commonly known as the Volcker Rule. The Company has taken measures to bring its CLO positions into conformance with the Volcker Rule.

The following table presents activity for OTTI:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	1,103		$	3,231		$	1,364		$	3,243
Reduction for investment securities called	(281		)	(1,028		)	(542		)	(1,166		)
Additions for OTTI not previously recognized in earnings	—			—			—			126
Ending balance	$	822		$	2,203		$	822		$	2,203

To the extent that changes occur in interest rates, credit movements, or other factors that impact fair value and expected recovery of amortized cost of its investment securities, the Company may, in future periods, be required to recognize OTTI in earnings.

Fair Value and Unrealized Losses

The following tables provide information on fair value and unrealized losses for the individual investment securities with an unrealized loss, aggregated by classification and length of time that the individual investment securities have been in a continuous unrealized loss position:

	At September 30, 2018
	Less Than Twelve Months					Twelve Months or Longer					Total
(Dollars in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			# of Holdings	Fair Value		Unrealized Losses
Available-for-sale:
U.S. Treasury Bills	$	9,214	$	(1	)	$	—	$	—		2	$	9,214	$	(1	)
Agency CMO	108,055		(2,046		)	123,570		(6,116		)	43	231,625		(8,162		)
Agency MBS	632,866		(13,665		)	751,739		(44,218		)	185	1,384,605		(57,883		)
Agency CMBS	28,075		(1,074		)	542,474		(38,788		)	37	570,549		(39,862		)
CMBS	68,695		(52		)	—		—			14	68,695		(52		)
CLO	41,156		(143		)	15,009		(141		)	3	56,165		(284		)
Single issuer-trust preferred	—		—			—		—			—	—		—
Corporate debt	8,862		(72		)	17,157		(891		)	5	26,019		(963		)
Available-for-sale in an unrealized loss position	$	896,923	$	(17,053	)	$	1,449,949	$	(90,154	)	289	$	2,346,872	$	(107,207	)
Held-to-maturity:
Agency CMO	$	31,749	$	(959	)	$	155,428	$	(8,233	)	26	$	187,177	$	(9,192	)
Agency MBS	757,451		(20,783		)	1,467,605		(89,252		)	274	2,225,056		(110,035		)
Agency CMBS	43,474		(697		)	600,808		(27,525		)	57	644,282		(28,222		)
Municipal bonds and notes	343,560		(11,463		)	216,401		(15,024		)	272	559,961		(26,487		)
CMBS	160,047		(3,256		)	17,152		(490		)	21	177,199		(3,746		)
Held-to-maturity in an unrealized loss position	$	1,336,281	$	(37,158	)	$	2,457,394	$	(140,524	)	650	$	3,793,675	$	(177,682	)

	At December 31, 2017
	Less Than Twelve Months					Twelve Months or Longer					Total
(Dollars in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			# of Holdings	Fair Value		Unrealized Losses
Available-for-sale:
U.S. Treasury Bills	$	—	$	—		$	—	$	—		—	$	—	$	—
Agency CMO	81,001		(449		)	119,104		(3,365		)	27	200,105		(3,814		)
Agency MBS	416,995		(2,920		)	606,021		(16,350		)	135	1,023,016		(19,270		)
Agency CMBS	54,182		(851		)	533,844		(19,399		)	36	588,026		(20,250		)
CMBS	23,869		(74		)	—		—			6	23,869		(74		)
CLO	56,335		(134		)	—		—			3	56,335		(134		)
Single issuer-trust preferred	7,050		(46		)	—		—			1	7,050		(46		)
Corporate debt	11,082		(395		)	6,265		(284		)	4	17,347		(679		)
Available-for-sale in an unrealized loss position	$	650,514	$	(4,869	)	$	1,265,234	$	(39,398	)	212	$	1,915,748	$	(44,267	)
Held-to-maturity:
Agency CMO	$	98,090	$	(1,082	)	$	106,775	$	(3,742	)	22	$	204,865	$	(4,824	)
Agency MBS	762,107		(4,555		)	1,197,839		(32,887		)	205	1,959,946		(37,442		)
Agency CMBS	576,770		(7,599		)	109,785		(2,412		)	56	686,555		(10,011		)
Municipal bonds and notes	6,432		(38		)	226,861		(6,520		)	92	233,293		(6,558		)
CMBS	92,670		(413		)	14,115		(207		)	13	106,785		(620		)
Held-to-maturity in an unrealized loss position	$	1,536,069	$	(13,687	)	$	1,655,375	$	(45,768	)	388	$	3,191,444	$	(59,455	)

Impairment Analysis

The following impairment analysis summarizes the basis for evaluating if investment securities within the Company’s available-for-sale and held-to-maturity portfolios are impaired as of September 30, 2018. Unless otherwise noted for an investment security type, management does not intend to sell these investment securities and has determined, based upon available evidence, that it is more likely than not that the Company will not be required to sell these investment securities before the recovery of their amortized cost. As such, based on the following impairment analysis, the Company does not consider any of these investment securities, in unrealized loss positions, to be other-than-temporarily impaired at September 30, 2018.

Available-for-Sale Securities

Agency CMO. There were unrealized losses of $8.2 million on the Company’s investment in Agency CMO at September 30, 2018, compared to $3.8 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances decreased for this asset class since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Agency MBS. There were unrealized losses of $57.9 million on the Company’s investment in residential mortgage-backed securities issued by government agencies at September 30, 2018, compared to $19.3 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances increased for this asset class since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Agency CMBS. There were unrealized losses of $39.9 million on the Company's investment in commercial mortgage-backed securities issued by government agencies at September 30, 2018, compared to $20.3 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances increased for this asset class since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

CMBS. There were unrealized losses of $52 thousand on the Company’s investment in CMBS at September 30, 2018, compared to $74 thousand at December 31, 2017. Unrealized losses and balances were essentially unchanged for the portfolio of mainly floating rate CMBS at September 30, 2018 compared to December 31, 2017. Internal stress tests are performed on individual bonds to monitor potential losses under stress scenarios. Contractual cash flows for the bonds continue to perform as expected.

CLO. There were unrealized losses of $284 thousand on the Company’s investments in CLO at September 30, 2018 compared to $134 thousand unrealized losses at December 31, 2017. Unrealized losses remained insignificant while principal balances decreased from December 31, 2017. Contractual cash flows for the bonds continue to perform as expected.

Corporate debt. There were unrealized losses of $963 thousand on the Company's corporate debt portfolio at September 30, 2018, compared to $679 thousand at December 31, 2017. Unrealized losses and balances were essentially unchanged since December 31, 2017. The Company performs periodic credit reviews of the issuer to assess the likelihood for ultimate recovery of amortized cost. Contractual cash flows for the bonds continue to perform as expected.

Held-to-Maturity Securities

Agency CMO. There were unrealized losses of $9.2 million on the Company’s investment in Agency CMO at September 30, 2018, compared to $4.8 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances decreased since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Agency MBS. There were unrealized losses of $110.0 million on the Company’s investment in residential mortgage-backed securities issued by government agencies at September 30, 2018, compared to $37.4 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances were essentially unchanged for this asset class since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Agency CMBS. There were unrealized losses of $28.2 million on the Company’s investment in commercial mortgage-backed securities issued by government agencies at September 30, 2018, compared to $10.0 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances decreased since December 31, 2017. These investments are issued by a government or government sponsored agency and therefore, are backed by certain government guarantees, either direct or implicit. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Municipal bonds and notes. There were unrealized losses of $26.5 million on the Company’s investment in municipal bonds and notes at September 30, 2018, compared to $6.6 million at December 31, 2017. Unrealized losses increased due to higher market rates while principal balances decreased since December 31, 2017. The Company performs periodic credit reviews of the issuers and the securities are currently performing as expected.

CMBS. There were unrealized losses of $3.7 million on the Company’s investment in CMBS at September 30, 2018, compared to $0.6 million unrealized losses at December 31, 2017. Unrealized losses increased due to higher market rates on mainly seasoned fixed rate conduit transactions while principal balances decreased since December 31, 2017. Internal stress tests are performed on individual bonds to monitor potential losses under stress scenarios. There has been no change in the credit quality, and the contractual cash flows are performing as expected.

Sales of Available-for Sale Investment Securities

There were no sales during the three and nine months ended September 30, 2018 and 2017.

Contractual Maturities

The amortized cost and fair value of debt securities by contractual maturity are set forth below:

	At September 30, 2018
	Available-for-Sale				Held-to-Maturity
(In thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in one year or less	$	29,730	$	29,750	$	6,352	$	6,378
Due after one year through five years	31,012		31,092		4,244		4,272
Due after five through ten years	276,583		276,143		40,016		39,933
Due after ten years	2,591,702		2,486,968		4,281,846		4,113,776
Total debt securities	$	2,929,027	$	2,823,953	$	4,332,458	$	4,164,359

For the maturity schedule above, mortgage-backed securities and CLO, which are not due at a single maturity date, have been categorized based on the maturity date of the underlying collateral. Actual principal cash flows may differ from this maturity date presentation as borrowers have the right to prepay obligations with or without prepayment penalties.

At September 30, 2018, the Company had a carrying value of $1.1 billion in callable investment securities in its CMBS, CLO, and municipal bond portfolios. The Company considers prepayment risk in the evaluation of its interest rate risk profile. These maturities may not reflect actual durations, which may be impacted by prepayments.

Investment securities with a carrying value totaling $2.5 billion at September 30, 2018 and $2.4 billion December 31, 2017 were pledged to secure public funds, trust deposits, repurchase agreements, and for other purposes, as required or permitted by law.

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Loans and Leases

9 Months Ended

Sep. 30, 2018

Loans and Leases Receivable Disclosure [Abstract]

Loans and Leases

Loans and Leases

The following table summarizes loans and leases:

(In thousands)	At September 30, 2018		At December 31, 2017
Residential	$	4,415,063	$	4,490,878
Consumer	2,441,181		2,590,225
Commercial	6,174,396		5,368,694
Commercial Real Estate	4,771,325		4,523,828
Equipment Financing	519,054		550,233
Loans and leases (1) (2)	$	18,321,019	$	17,523,858

(1) Loans and leases include net deferred fees and net premiums/discounts of $13.6 million and $20.6 million at September 30, 2018 and December 31, 2017, respectively.

(2) At September 30, 2018 the Company had pledged $7.1 billion of eligible residential, consumer, and commercial loans as collateral to support borrowing capacity at the Federal Home Loan Bank (FHLB) of Boston and the Federal Reserve Bank (FRB) of Boston.

Loans and Leases Aging

The following tables summarize the aging of loans and leases:

	At September 30, 2018
(In thousands)	30-59 Days Past Due and Accruing		60-89 Days Past Due and Accruing		90 or More Days Past Due and Accruing		Non-accrual		Total Past Due and Non-accrual		Current		Total Loans and Leases
Residential	$	9,023	$	5,510	$	—	$	49,469	$	64,002	$	4,351,061	$	4,415,063
Consumer:
Home equity	9,519		3,442		—		35,174		48,135		2,165,340		2,213,475
Other consumer	1,819		898		—		1,490		4,207		223,499		227,706
Commercial:
Commercial non-mortgage	659		543		147		55,040		56,389		5,148,962		5,205,351
Asset-based	—		—		—		1,029		1,029		968,016		969,045
Commercial real estate:
Commercial real estate	2,715		35		—		7,254		10,004		4,564,320		4,574,324
Commercial construction	—		—		—		—		—		197,001		197,001
Equipment financing	1,371		3,617		—		3,339		8,327		510,727		519,054
Total	$	25,106	$	14,045	$	147	$	152,795	$	192,093	$	18,128,926	$	18,321,019

	At December 31, 2017
(In thousands)	30-59 Days Past Due and Accruing		60-89 Days Past Due and Accruing		90 or More Days Past Due and Accruing		Non-accrual		Total Past Due and Non-accrual		Current		Total Loans and Leases
Residential	$	8,643	$	5,146	$	—	$	44,481	$	58,270	$	4,432,608	$	4,490,878
Consumer:
Home equity	12,668		5,770		—		35,645		54,083		2,298,185		2,352,268
Other consumer	2,556		1,444		—		1,707		5,707		232,250		237,957
Commercial:
Commercial non-mortgage	5,212		603		644		39,214		45,673		4,488,242		4,533,915
Asset-based	—		—		—		589		589		834,190		834,779
Commercial real estate:
Commercial real estate	478		77		248		4,484		5,287		4,238,987		4,244,274
Commercial construction	—		—		—		—		—		279,554		279,554
Equipment financing	1,732		626		—		393		2,751		547,482		550,233
Total	$	31,289	$	13,666	$	892	$	126,513	$	172,360	$	17,351,498	$	17,523,858

Interest on non-accrual loans and leases that would have been recorded as additional interest income had the loans and leases been current in accordance with the original terms totaled $4.3 million and $2.8 million for the three months ended September 30, 2018 and 2017, respectively, and $7.9 million and $6.4 million for the nine months ended September 30, 2018 and 2017, respectively.

Allowance for Loan and Lease Losses

The following tables summarize the activity in, as well as the loan and lease balances that were evaluated for, the allowance for loan and lease losses (ALLL):

	At or for the three months ended September 30, 2018
	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	19,007		$	31,759		$	95,340		$	55,833		$	5,383		$	207,322
Provision (benefit) charged to expense	407			474			5,686			4,146			(213		)	10,500
Charge-offs	(874		)	(4,863		)	(740		)	(1,922		)	(136		)	(8,535		)
Recoveries	133			1,827			431			143			11			2,545
Balance, end of period	$	18,673		$	29,197		$	100,717		$	58,200		$	5,045		$	211,832

	At or for the three months ended September 30, 2017
(In thousands)	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	18,427		$	42,488		$	79,964		$	52,402		$	6,297		$	199,578
(Benefit) provision charged to expense	(348		)	(41		)	12,166			(2,129		)	502			10,150
Charge-offs	(585		)	(6,197		)	(3,002		)	(749		)	(121		)	(10,654		)
Recoveries	280			1,894			466			10			79			2,729
Balance, end of period	$	17,774		$	38,144		$	89,594		$	49,534		$	6,757		$	201,803

	At or for the nine months ended September 30, 2018
(In thousands)	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	19,058		$	36,190		$	89,533		$	49,407		$	5,806		$	199,994
Provision (benefit) charged to expense	1,316			2,967			17,596			10,678			(557		)	32,000
Charge-offs	(2,545		)	(14,844		)	(7,869		)	(2,039		)	(246		)	(27,543		)
Recoveries	844			4,884			1,457			154			42			7,381
Balance, end of period	$	18,673		$	29,197		$	100,717		$	58,200		$	5,045		$	211,832
Individually evaluated for impairment	$	4,319		$	1,428		$	10,491		$	1,544		$	15		$	17,797
Collectively evaluated for impairment	$	14,354		$	27,769		$	90,226		$	56,656		$	5,030		$	194,035
Loan and lease balances:
Individually evaluated for impairment	$	105,600		$	39,808		$	104,353		$	9,767		$	6,489		$	266,017
Collectively evaluated for impairment	4,309,463			2,401,373			6,070,043			4,761,558			512,565			18,055,002
Loans and leases	$	4,415,063		$	2,441,181		$	6,174,396		$	4,771,325		$	519,054		$	18,321,019

	At or for the nine months ended September 30, 2017
(In thousands)	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	23,226		$	45,233		$	71,905		$	47,477		$	6,479		$	194,320
(Benefit) provision charged to expense	(4,436		)	6,847			21,905			2,987			597			27,900
Charge-offs	(1,940		)	(18,273		)	(5,321		)	(951		)	(425		)	(26,910		)
Recoveries	924			4,337			1,105			21			106			6,493
Balance, end of period	$	17,774		$	38,144		$	89,594		$	49,534		$	6,757		$	201,803
Individually evaluated for impairment	$	4,925		$	1,689		$	10,844		$	290		$	38		$	17,786
Collectively evaluated for impairment	$	12,849		$	36,455		$	78,750		$	49,244		$	6,719		$	184,017
Loan and lease balances:
Individually evaluated for impairment	$	116,706		$	46,224		$	85,385		$	18,199		$	3,642		$	270,156
Collectively evaluated for impairment	4,382,735			2,520,759			5,262,918			4,446,718			563,135			17,176,265
Loans and leases	$	4,499,441		$	2,566,983		$	5,348,303		$	4,464,917		$	566,777		$	17,446,421

Impaired Loans and Leases

The following tables summarize impaired loans and leases:

	At September 30, 2018
(In thousands)	Unpaid Principal Balance		Total Recorded Investment		Recorded Investment No Allowance		Recorded Investment With Allowance		Related Valuation Allowance
Residential	$	115,959	$	105,600	$	66,484	$	39,116	$	4,319
Consumer - home equity	45,299		39,808		30,924		8,884		1,428
Commercial :
Commercial non-mortgage	117,223		103,324		65,968		37,356		10,491
Asset-based	1,074		1,029		1,029		—		—
Commercial real estate	12,239		9,767		2,561		7,206		1,544
Equipment financing	6,536		6,489		6,164		325		15
Total	$	298,330	$	266,017	$	173,130	$	92,887	$	17,797

	At December 31, 2017
(In thousands)	Unpaid Principal Balance		Total Recorded Investment		Recorded Investment No Allowance		Recorded Investment With Allowance		Related Valuation Allowance
Residential	$	125,352	$	114,295	$	69,759	$	44,536	$	4,805
Consumer - home equity	50,809		45,436		34,418		11,018		1,668
Commercial :
Commercial non-mortgage	79,900		71,882		27,313		44,569		9,786
Asset-based	3,272		589		589		—		—
Commercial real estate	11,994		11,226		6,387		4,839		272
Equipment financing	3,409		3,325		2,932		393		23
Total	$	274,736	$	246,753	$	141,398	$	105,355	$	16,554

The following table summarizes the average recorded investment and interest income recognized for impaired loans and leases:

	Three months ended September 30,												Nine months ended September 30,
	2018						2017						2018						2017
(In thousands)	Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income		Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income		Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income		Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income
Residential	$	107,618	$	923	$	301	$	118,841	$	1,027	$	285	$	109,948	$	2,852	$	819	$	118,065	$	3,133	$	986
Consumer - home equity	40,722		292		238		46,753		341		246		42,622		876		738		45,972		998		808
Commercial:
Commercial non-mortgage	94,618		847		—		81,816		249		—		87,603		2,257		—		64,932		704		—
Asset based	1,095		—		—		4,279		—		—		809		—		—		4,279		—		—
Commercial real estate:
Commercial real estate	11,222		30		—		20,249		96		—		10,497		164		—		20,647		329		—
Commercial construction	—		—		—		828		—		—		—		—		—		831		12		—
Equipment financing	6,337		41		—		4,895		30		—		4,907		112		—		5,031		168		—
Total	$	261,612	$	2,133	$	539	$	277,661	$	1,743	$	531	$	256,386	$	6,261	$	1,557	$	259,757	$	5,344	$	1,794

Credit Quality Indicators. To measure credit risk for the commercial, commercial real estate, and equipment financing portfolios, the Company employs a dual grade credit risk grading system for estimating the probability of default (PD) and the loss given default (LGD). The credit risk grade system assigns a rating to each borrower and to the facility, which together form a Composite Credit Risk Profile. The credit risk grade system categorizes borrowers by common financial characteristics that measure the credit strength of borrowers and facilities by common structural characteristics. The Composite Credit Risk Profile has ten grades, with each grade corresponding to a progressively greater risk of default. Grades (1) - (6) are considered pass ratings, and (7) - (10) are considered criticized, as defined by the regulatory agencies. Risk ratings, assigned to differentiate risk within the portfolio, are reviewed on an ongoing basis and revised to reflect changes in a borrower's current financial position and outlook, risk profile, and the related collateral and structural position. Loan officers review updated financial information on at least an annual basis for all pass rated loans to assess the accuracy of the risk grade. Criticized loans undergo more frequent reviews and enhanced monitoring.

A (7) Special Mention credit has the potential weakness that, if left uncorrected, may result in deterioration of the repayment prospects for the asset. An (8) Substandard asset has a well defined weakness that jeopardizes the full repayment of the debt. An asset rated (9) Doubtful has all of the same weaknesses as a substandard credit with the added characteristic that the weakness makes collection or liquidation in full, given current facts, conditions, and values, improbable. Assets classified as (10) Loss, in accordance with regulatory guidelines, are considered uncollectible and charged off.

The following table summarizes commercial, commercial real estate and equipment financing loans and leases segregated by risk rating exposure:

	Commercial				Commercial Real Estate				Equipment Financing
(In thousands)	At September 30, 2018		At December 31, 2017		At September 30, 2018		At December 31, 2017		At September 30, 2018		At December 31, 2017
(1) - (6) Pass	$	5,742,170	$	5,048,162	$	4,561,901	$	4,355,916	$	499,167	$	525,105
(7) Special Mention	188,905		104,594		105,778		62,065		1,574		8,022
(8) Substandard	236,246		206,883		103,646		105,847		18,313		17,106
(9) Doubtful	7,075		9,055		—		—		—		—
Total	$	6,174,396	$	5,368,694	$	4,771,325	$	4,523,828	$	519,054	$	550,233

For residential and consumer loans, the primary credit quality indicator that the Company considers is past due status. Other factors, such as, updated Fair Isaac Corporation (FICO) scores, employment status, collateral, geography, loans discharged in bankruptcy, and the status of first lien position loans on second lien position loans, may also be evaluated as credit quality indicators. On an ongoing basis for portfolio monitoring purposes, the Company estimates the current value of property secured as collateral for home equity and residential first mortgage lending products. The estimate is based on home price indices compiled by the S&P/Case-Shiller Home Price Indices. The real estate price data is applied to the loan portfolios taking into account the age of the most recent valuation and geographic area.

Troubled Debt Restructurings

The following table summarizes information for troubled debt restructurings (TDRs):

(Dollars in thousands)	At September 30, 2018		At December 31, 2017
Accrual status	$	145,219	$	147,113
Non-accrual status	95,154		74,291
Total recorded investment of TDRs	$	240,373	$	221,404
Specific reserves for TDRs included in the balance of ALLL	$	16,338	$	12,384
Additional funds committed to borrowers in TDR status	2,926		2,736

For the portion of TDRs deemed to be uncollectible, Webster charged off $1.1 million and $0.4 million for the three months ended September 30, 2018 and 2017, respectively, and $6.3 million, and $3.0 million for the nine months ended September 30, 2018 and 2017, respectively.

The following table provides information on the type of concession for loans and leases modified as TDRs:

	Three months ended September 30,						Nine months ended September 30,
	2018			2017			2018			2017
	Number of Loans and Leases	Post- Modification Recorded Investment(1)		Number of Loans and Leases	Post- Modification Recorded Investment(1)		Number of Loans and Leases	Post- Modification Recorded Investment(1)		Number of Loans and Leases	Post- Modification Recorded Investment(1)
(Dollars in thousands)
Residential
Extended Maturity	1	$	20	—	$	—	1	$	20	9	$	1,390
Adjusted Interest Rate	—	—		—	—		—	—		2	335
Maturity/Rate Combined	4	440		4	570		7	716		9	1,416
Other (2)	3	356		6	1,357		16	2,798		32	5,471
Consumer - home equity
Extended Maturity	1	148		2	158		3	341		8	822
Adjusted Interest Rate	—	—		1	247		—	—		1	247
Maturity/Rate Combined	3	170		2	399		6	618		13	3,212
Other (2)	5	258		12	839		30	1,951		55	3,733
Commercial non - mortgage
Extended Maturity	4	537		—	—		7	622		8	813
Maturity/Rate Combined	8	8,185		8	299		10	8,236		13	9,153
Other (2)	8	10,585		—	—		17	39,328		1	4
Commercial real estate
Extended Maturity	—	—		—	—		2	97		—	—
Maturity/Rate Combined	—	—		—	—		1	245		—	—
Other (2)	—	—		—	—		1	5,111		—	—
Total TDRs	37	$	20,699	35	$	3,869	101	$	60,083	151	$	26,596

(1) Post-modification balances approximate pre-modification balances. The aggregate amount of charge-offs as a result of the restructurings was not significant.

(2) Other includes covenant modifications, forbearance, loans discharged under Chapter 7 bankruptcy, or other concessions.

Loans and leases modified as TDRs within the previous 12 months and for which there was a payment default, consisted of 1 residential loan with an recorded investment of $241 thousand and 1 residential loan with an recorded investment $248 thousand for the three months ended September 30, 2018 and 2017, respectively, and 2 residential loans with an recorded investment of $261 thousand and 1 residential loan with an recorded investment $248 thousand for the nine months ended September 30, 2018 and 2017, respectively.

The recorded investment of TDRs in commercial, commercial real estate, and equipment financing segregated by risk rating exposure is as follows:

(In thousands)	At September 30, 2018		At December 31, 2017
(1) - (6) Pass	$	12,733	$	8,268
(7) Special Mention	334		355
(8) Substandard	74,822		53,050
(9) Doubtful	7,075		—
Total	$	94,964	$	61,673

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Transfers of Financial Assets

9 Months Ended

Sep. 30, 2018

Transfers and Servicing [Abstract]

Transfers of Financial Assets

Transfers of Financial Assets

The Company sells financial assets in the normal course of business, primarily residential mortgage loans sold to government-sponsored enterprises through established programs and securitizations. Gains and losses from initial measurement and subsequent changes in fair value are recognized in earnings. The gain or loss on residential mortgage loans sold and the related origination fee income, as well as fair value adjustments to loans held-for-sale are included as mortgage banking activities in the accompanying Condensed Consolidated Statements of Income.

The Company may be required to repurchase a loan in the event of certain breaches of the representations and warranties, or in the event of default of the borrower within 90 days of sale, as provided for in the sale agreements. A reserve for loan repurchases provides for estimated losses pertaining to the potential repurchase of loans associated with the Company’s mortgage banking activities. The reserve reflects management’s evaluation of the identity of the counterparty, the vintage of the loans sold, the amount of open repurchase requests, specific loss estimates for each open request, the current level of loan losses in similar vintages held in the residential loan portfolio, and estimated recoveries on the underlying collateral. The reserve also reflects management’s expectation of losses from repurchase requests for which the Company has not yet been notified, as the performance of loans sold and the quality of the servicing provided by the acquirer also may impact the reserve. The provision recorded at the time of the loan sale is netted from the gain or loss recorded in mortgage banking activities, while any incremental provision, post loan sale, is recorded in other non-interest expense in the accompanying Condensed Consolidated Statements of Income.

The following table provides a summary of activity in the reserve for loan repurchases:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	674		$	843		$	872		$	790
Provision (benefit) charged to expense	18			25			(172		)	78
Repurchased loans and settlements charged off	(10		)	(18		)	(18		)	(18		)
Ending balance	$	682		$	850		$	682		$	850

The following table provides information for mortgage banking activities:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Residential mortgage loans held for sale:
Proceeds from sale	$	57,042		$	88,691		$	147,105		$	262,029
Loans sold with servicing rights retained	51,014			79,690			130,740			239,357
Net gain on sale	1,051			1,979			2,732			4,356
Ancillary fees	463			682			1,275			2,091
Fair value option adjustment	(209		)	(240		)	(323		)	1,591

The Company has retained servicing rights on residential mortgage loans totaling $2.5 billion at September 30, 2018 and $2.6 billion at December 31, 2017.

The following table presents the changes in carrying value for mortgage servicing assets:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	23,341		$	24,708		$	25,139		$	24,466
Additions	1,428			2,576			3,878			7,063
Amortization	(2,125		)	(2,144		)	(6,373		)	(6,389		)
Ending balance	$	22,644		$	25,140		$	22,644		$	25,140

Loan servicing fees, net of mortgage servicing rights amortization, were $0.3 million and $0.2 million for the three months ended September 30, 2018 and 2017, respectively, and $0.9 million and $0.6 million for the nine months ended September 30, 2018 and 2017, respectively, and are included as a component of loan related fees in the accompanying Condensed Consolidated Statements of Income.

See Note 13:Fair Value Measurements for additional fair value information on loans held for sale and mortgage servicing assets.

Additionally, loans not originated for sale were sold approximately at carrying value, for cash proceeds of $674 thousand for certain commercial loans and $7.4 million for certain residential loans for the nine months ended September 30, 2018 and 2017, respectively.

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Goodwill and Other Intangible Assets

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

Goodwill and other intangible assets by reportable segment consisted of the following:

	At September 30, 2018							At December 31, 2017
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Goodwill:
Community Banking						$	516,560						$	516,560
HSA Bank						21,813							21,813
Total goodwill						$	538,373						$	538,373
Other intangible assets:
HSA Bank - Core deposits	$	22,000	$	(10,283	)	$	11,717	$	22,000	$	(8,610	)	$	13,390
HSA Bank - Customer relationships	21,000		(5,991		)	15,009		21,000		(4,779		)	16,221
Total other intangible assets	$	43,000	$	(16,274	)	$	26,726	$	43,000	$	(13,389	)	$	29,611

As of September 30, 2018, the remaining estimated aggregate future amortization expense for intangible assets is as follows:

(In thousands)
Remainder of 2018	$	962
2019	3,847
2020	3,847
2021	3,847
2022	3,847
Thereafter	10,376

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Deposits

9 Months Ended

Sep. 30, 2018

Banking and Thrift [Abstract]

Deposits

A summary of deposits by type follows:

(In thousands)	At September 30, 2018		At December 31, 2017
Non-interest-bearing:
Demand	$	4,231,505	$	4,191,496
Interest-bearing:
Health savings accounts	5,599,596		5,038,681
Checking	2,587,679		2,736,952
Money market	2,376,649		2,209,492
Savings	4,106,942		4,348,700
Time deposits	3,095,252		2,468,408
Total interest-bearing	17,766,118		16,802,233
Total deposits	$	21,997,623	$	20,993,729
Time deposits and interest-bearing checking, included in above balances, obtained through brokers	$	938,092	$	898,157
Time deposits, included in above balance, that exceed the FDIC limit	506,955		561,512
Deposit overdrafts reclassified as loan balances	1,761		2,210

The scheduled maturities of time deposits are as follows:

(In thousands)	At September 30, 2018
Remainder of 2018	$	683,421
2019	1,771,721
2020	437,240
2021	125,265
2022	49,295
Thereafter	28,310
Total time deposits	$	3,095,252

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Borrowings

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Borrowings

Borrowings

Total borrowings of $2.2 billion at September 30, 2018 and $2.5 billion at December 31, 2017 are described in detail below.

The following table summarizes securities sold under agreements to repurchase and other borrowings:

	At September 30, 2018				At December 31, 2017
(In thousands)	Amount		Rate		Amount		Rate
Securities sold under agreements to repurchase (1):
Original maturity of one year or less	$	264,488	0.29	%	$	288,269	0.17	%
Original maturity of greater than one year, non-callable	100,000		2.50		300,000		3.10
Total securities sold under agreements to repurchase	364,488		0.89		588,269		1.66
Fed funds purchased	200,000		2.25		55,000		1.37
Securities sold under agreements to repurchase and other borrowings	$	564,488	1.37		$	643,269	1.64

(1) The Company has right of offset with respect to all repurchase agreement assets and liabilities. However, securities sold under agreements to repurchase represents the gross amount for these transactions, as only liabilities are outstanding for the periods presented.

Repurchase agreements are used as a source of borrowed funds and are collateralized by U.S. Government agency mortgage-backed securities. Repurchase agreement counterparties are limited to primary dealers in government securities and commercial or municipal customers through Webster’s Treasury Unit.

The following table provides information for FHLB advances:

	At September 30, 2018				At December 31, 2017
(Dollars in thousands)	Amount		Weighted- Average Contractual Coupon Rate		Amount		Weighted- Average Contractual Coupon Rate
Maturing within 1 year	$	948,731	2.18	%	$	1,150,000	1.48	%
After 1 but within 2 years	259,295		1.79		103,026		1.81
After 2 but within 3 years	75,000		1.51		215,000		1.73
After 3 but within 4 years	150,049		3.27		200,000		2.06		(1)
After 4 but within 5 years	193		1.69		170		—
After 5 years	8,616		2.64		8,909		2.65		(1)
FHLB advances and overall rate	$	1,441,884	2.19		$	1,677,105	1.61		(1)
Aggregate carrying value of assets pledged as collateral	$	6,773,182			$	6,402,066
Remaining borrowing capacity	3,018,052				2,600,624

(1) Weighted-average contractual coupon rates for December 31, 2017 are presented as revised for these classifications to correct an immaterial error in presentation. The percentages reported in the Company's 2017 Annual Report on Form 10-K were: After 3 but within 4 years - 4.13%; After 5 years - 1.96%; and overall rate - 1.85%.

Webster Bank is in compliance with FHLB collateral requirements for the periods presented. Eligible collateral, primarily certain residential and commercial real estate loans, has been pledged to secure FHLB advances.

The following table summarizes long-term debt:

(Dollars in thousands)		At September 30, 2018			At December 31, 2017
4.375%	Senior fixed-rate notes due February 15, 2024	$	150,000		$	150,000
Junior subordinated debt Webster Statutory Trust I floating-rate notes due September 17, 2033 (1)		77,320			77,320
Total notes and subordinated debt		227,320			227,320
Discount on senior fixed-rate notes		(638		)	(727		)
Debt issuance cost on senior fixed-rate notes		(725		)	(826		)
Long-term debt		$	225,957		$	225,767

(1)

The interest rate on Webster Statutory Trust I floating-rate notes, which varies quarterly based on 3-month London Interbank Offered Rate plus 2.95%, was 5.28% at September 30, 2018 and 4.55% at December 31, 2017.

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Accumulated Other Comprehensive Loss, Net of Tax

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Accumulated Other Comprehensive Loss, Net of Tax

Accumulated Other Comprehensive Loss, Net of Tax

The following tables summarize the changes in accumulated other comprehensive loss, net of tax (AOCL) by component:

	Three months ended September 30, 2018												Nine months ended September 30, 2018
(In thousands)	Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total			Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total
Beginning balance	$	(64,617	)	$	(10,814	)	$	(46,505	)	$	(121,936	)	$	(27,947	)	$	(15,016	)	$	(48,568	)	$	(91,531	)
(OCL) OCI before reclassifications	(13,811		)	197			—			(13,614		)	(50,481		)	1,620			—			(48,861		)
Amounts reclassified from AOCL	—			1,438			2,548			3,986			—			4,217			4,611			8,828
Net current-period OCI/(OCL)	(13,811		)	1,635			2,548			(9,628		)	(50,481		)	5,837			4,611			(40,033		)
Ending balance	$	(78,428	)	$	(9,179	)	$	(43,957	)	$	(131,564	)	$	(78,428	)	$	(9,179	)	$	(43,957	)	$	(131,564	)

	Three months ended September 30, 2017												Nine months ended September 30, 2017
(In thousands)	Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total			Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total
Beginning balance	$	(14,501	)	$	(15,258	)	$	(42,323	)	$	(72,082	)	$	(15,476	)	$	(17,068	)	$	(44,449	)	$	(76,993	)
OCI/(OCL) before reclassifications	872			(34		)	—			838			1,847			(445		)	—			1,402
Amounts reclassified from AOCL	—			1,145			1,001			2,146			—			3,366			3,127			6,493
Net current-period OCI	872			1,111			1,001			2,984			1,847			2,921			3,127			7,895
Ending balance	$	(13,629	)	$	(14,147	)	$	(41,322	)	$	(69,098	)	$	(13,629	)	$	(14,147	)	$	(41,322	)	$	(69,098	)

The following tables provide information for the items reclassified from AOCL:

(In thousands)	Three months ended September 30,						Nine months ended September 30,						Associated Line Item in the Condensed Consolidated Statements of Income
AOCL Components	2018			2017			2018			2017
Derivative instruments:
Cash flow hedges	$	(1,932	)	$	(1,810	)	$	(5,664	)	$	(5,316	)	Total interest expense
Tax benefit	494			665			1,447			1,950			Income tax expense
Net of tax	$	(1,438	)	$	(1,145	)	$	(4,217	)	$	(3,366	)
Defined benefit pension and other postretirement benefit plans:
Amortization of net loss	$	(3,431	)	$	(1,587	)	$	(6,209	)	$	(4,959	)	(1)
Tax benefit	883			586			1,598			1,832			Income tax expense
Net of tax	$	(2,548	)	$	(1,001	)	$	(4,611	)	$	(3,127	)

(1) These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost, see Note 14 - Retirement Benefit Plans for further details.

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Regulatory Matters

9 Months Ended

Sep. 30, 2018

Regulatory Capital Requirements [Abstract]

Regulatory Matters

Regulatory Matters

Capital Requirements

Webster Financial Corporation is subject to regulatory capital requirements administered by the Federal Reserve System, while Webster Bank is subject to regulatory capital requirements administered by the Office of the Comptroller of the Currency (OCC). Regulatory authorities can initiate certain mandatory actions if Webster Financial Corporation or Webster Bank fail to meet minimum capital requirements, which could have a direct material effect on the Company’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, both Webster Financial Corporation and Webster Bank must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. These quantitative measures require minimum amounts and ratios to ensure capital adequacy.

Basel III total risk-based capital is comprised of three categories: CET1 capital, additional Tier 1 capital, and Tier 2 capital. CET1 capital includes common shareholders' equity, less deductions for goodwill, other intangibles, and certain deferred tax adjustments. Common shareholders' equity, for purposes of CET1 capital, excludes AOCL components as permitted by the opt-out election taken by Webster upon adoption of Basel III. Tier 1 capital is comprised of CET1 capital plus perpetual preferred stock, while Tier 2 capital includes qualifying subordinated debt and qualifying allowance for credit losses, that together equal total capital.

The following table provides information on the capital ratios for Webster Financial Corporation and Webster Bank:

	At September 30, 2018
	Actual				Minimum Requirement				Well Capitalized
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
Webster Financial Corporation
CET1 risk-based capital	$	2,215,456	11.23	%	$	887,910	4.5	%	$	1,282,537	6.5	%
Total risk-based capital	2,652,270		13.44		1,578,507		8.0		1,973,133		10.0
Tier 1 risk-based capital	2,360,493		11.96		1,183,880		6.0		1,578,507		8.0
Tier 1 leverage capital	2,360,493		8.89		1,061,977		4.0		1,327,471		5.0
Webster Bank
CET1 risk-based capital	$	2,137,249	10.84	%	$	887,232	4.5	%	$	1,281,558	6.5	%
Total risk-based capital	2,351,706		11.93		1,577,302		8.0		1,971,628		10.0
Tier 1 risk-based capital	2,137,249		10.84		1,182,977		6.0		1,577,302		8.0
Tier 1 leverage capital	2,137,249		8.05		1,061,427		4.0		1,326,784		5.0

	At December 31, 2017
	Actual				Minimum Requirement				Well Capitalized
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
Webster Financial Corporation
CET1 risk-based capital	$	2,093,116	11.14	%	$	845,389	4.5	%	$	1,221,118	6.5	%
Total risk-based capital	2,517,848		13.40		1,502,914		8.0		1,878,643		10.0
Tier 1 risk-based capital	2,238,172		11.91		1,127,186		6.0		1,502,914		8.0
Tier 1 leverage capital	2,238,172		8.63		1,036,817		4.0		1,296,021		5.0
Webster Bank
CET1 risk-based capital	$	2,114,224	11.26	%	$	844,693	4.5	%	$	1,220,113	6.5	%
Total risk-based capital	2,316,580		12.34		1,501,677		8.0		1,877,097		10.0
Tier 1 risk-based capital	2,114,224		11.26		1,126,258		6.0		1,501,677		8.0
Tier 1 leverage capital	2,114,224		8.14		1,038,442		4.0		1,298,052		5.0

Dividend Restrictions

Webster Financial Corporation is dependent upon dividends from Webster Bank to provide funds for its cash requirements, including payments of dividends to shareholders. Banking regulations may limit the amount of dividends that may be paid. Approval by regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of Webster Bank to fall below specified minimum levels, or if dividends declared exceed the net income for that year combined with the undistributed net income for the preceding two years. In addition, the Office of the Comptroller of the Currency (OCC) has discretion to prohibit any otherwise permitted capital distribution on general safety and soundness grounds. Dividends paid by Webster Bank to Webster Financial Corporation totaled $220 million during the nine months ended September 30, 2018 compared to $80 million during the nine months ended September 30, 2017.

Cash Restrictions

Webster Bank is required by Federal Reserve System regulations to hold cash reserve balances on hand or with the Federal Reserve Bank. Pursuant to this requirement, Webster Bank held $98.6 million and $82.3 million at September 30, 2018 and December 31, 2017, respectively.

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Earnings Per Common Share

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings Per Common Share

Reconciliation of the calculation of basic and diluted earnings per common share follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2018		2017		2018		2017
Earnings for basic and diluted earnings per common share:
Net income	$	99,673	$	64,496	$	261,580	$	185,546
Less: Preferred stock dividends	1,968		2,024		5,884		6,072
Net income available to common shareholders	97,705		62,472		255,696		179,474
Less: Earnings applicable to participating securities	245		46		656		212
Earnings applicable to common shareholders	$	97,460	$	62,426	$	255,040	$	179,262
Shares:
Weighted-average common shares outstanding - basic	91,959		92,125		91,912		92,003
Effect of dilutive securities:
Stock options and restricted stock	243		372		303		403
Warrants	6		6		6		6
Weighted-average common shares outstanding - diluted	92,208		92,503		92,221		92,412
Earnings per common share:
Basic	$	1.06	$	0.68	$	2.77	$	1.95
Diluted	1.06		0.67		2.77		1.94

Potential common shares from non-participating restricted stock, of 97 thousand and 80 thousand for the three months ended September 30, 2018 and 2017, respectively, and 54 thousand and 61 thousand for the nine months ended September 30, 2018 and 2017, respectively, are excluded from the effect of dilutive securities because, due to performance conditions, they would have been anti-dilutive.

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Derivative Financial Instruments

9 Months Ended

Sep. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Derivative Financial Instruments

Risk Management Objective of Using Derivatives

Webster manages economic risks, such as interest rate, liquidity, and credit risks by managing the amount, sources, and duration of its debt funding in conjunction with the use of interest rate derivative financial instruments. Webster enters into interest rate derivatives to mitigate the exposure related to business activities that result in the future receipt or payment of, both known and uncertain, cash amounts that are impacted by interest rates. The primary objective for using interest rate derivatives is to add stability to interest expense by managing exposure to interest rate movements. To accomplish this objective, Webster uses interest rate swaps and interest rate caps as part of its interest rate risk management strategy.

Interest rate swaps and interest rate caps designated as cash flow hedges are designed to manage the risk associated with a forecasted event or an uncertain variable-rate cash flow. Forward-settle interest rate swaps protect the Company against adverse fluctuations in interest rates by reducing its exposure to variability in cash flows relating to interest payments on forecasted debt issuances. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Interest rate caps designated as cash flow hedges involve the receipt of variable amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for payment of an up-front premium.

Cash flow hedges are used to regulate the variable cash flows associated with existing variable-rate debt and forecasted issuances of debt. Derivative instruments designated as cash flow hedges are recorded on the balance sheet at fair value. The effective portion of the change in fair value of the derivatives which are designated as cash flow hedges, and that qualify for hedge accounting, is recorded to AOCL and is reclassified into earnings in the subsequent periods that the hedged forecasted transaction affects earnings. The ineffective portion of the change in fair value of these derivatives, attributable to the difference in the effective date of the hedge and the effective date of the debt issuance, is recognized directly in earnings. During the periods presented, there was no ineffectiveness to be recognized in earnings.

Certain fixed-rate obligations can be exposed to a change in fair value attributable to changes in benchmark interest rates. On occasion, interest rate swaps will be used to manage this exposure. An interest rate swap which involves the receipt of fixed-rate amounts from a counterparty in exchange for Webster making variable-rate payments over the life of the agreement, without the exchange of the underlying notional amount, is designated as a fair value hedge. For a qualifying derivative designated as a fair value hedge, the gain or loss on the derivative, as well as the gain or loss on the hedged item, is recognized in interest expense. During the periods presented, Webster did not have any interest rate derivative financial instruments designated as fair value hedges and as a result, there was no impact to interest expense.

Additionally, in order to address certain other risk management matters, the Company also utilizes derivative instruments that do not qualify for hedge accounting. These derivative instruments, which are recorded on the balance sheet at fair value, with changes in fair value recognized each period as other non-interest income in the accompanying Condensed Consolidated Statements of Income, are described in the following paragraphs.

Interest rate swap and cap contracts are sold to commercial and other customers who wish to modify loan interest rate sensitivity. These contracts are offset with dealer counterparty transactions structured with matching terms, which results in minimal impact on earnings, except for fee income earned in such transactions. All contracts eligible for clearing are cleared through Chicago Mercantile Exchange (CME). In accordance with its amended rulebook, CME legally characterizes variation margin payments made to and received from CME as settlement of derivatives rather than as collateral against derivatives.

Risk participation agreements (RPAs) are entered into as financial guarantees of performance on interest rate swap derivatives. The purchased (asset) or sold (liability) guarantee allows the Company to participate-in (fee received) or participate-out (fee paid) the risk associated with certain derivative positions executed with the borrower by the lead bank in a loan syndication.

Other derivatives include foreign currency forward contracts related to lending arrangements and customer hedging activity, a VISA equity swap transaction, and mortgage banking derivatives such as mortgage-backed securities related to residential loan commitments and loans held for sale. Mortgage banking derivatives are utilized by Webster in its efforts to manage risk of loss associated with its mortgage loan commitments and mortgage loans held for sale. Prior to closing and funding certain single-family residential mortgage loans interest rate lock commitments are generally extended to the borrowers. During the period from commitment date to closing date, Webster is subject to the risk that market rates of interest may change. If market rates rise, investors generally will pay less to purchase such loans causing a reduction in the anticipated gain on sale of the loans, or possibly resulting in a loss. In an effort to mitigate such risk, forward delivery sales commitments are established under which Webster agrees to deliver whole mortgage loans to various investors or issue mortgage-backed securities. Mandatory forward commitments establish the price to be received upon the sale of the related mortgage loan, thereby mitigating certain interest rate risk. There is, however, still certain execution risk specifically related to Webster’s ability to close and deliver to its investors the mortgage loans it has committed to sell.

Balance Sheet Impact of Derivative Instruments

The following table presents the notional amounts and fair value of derivative positions:

	At September 30, 2018								At December 31, 2017
	Asset Derivatives				Liability Derivatives				Asset Derivatives				Liability Derivatives
(In thousands)	Notional Amounts		Fair Value		Notional Amounts		Fair Value		Notional Amounts		Fair Value		Notional Amounts		Fair Value
Designated as cash flow hedging instruments:
Positions subject to a master netting agreement (1)
Interest rate derivatives (2)	$	325,000	$	4,951	$	—	$	—	$	325,000	$	2,770	$	—	$	—
Not designated as hedging instruments:
Positions subject to a master netting agreement (1)
Interest rate derivatives (2)	3,852,438		13,226		76,789		215		2,791,760		5,977		721,048		1,968
Mortgage banking derivatives (3)	52,067		223		3,063		7		28,497		421		39,230		110
Other	24,879		199		23,927		435		7,914		258		30,328		419
Positions not subject to a master netting agreement (4)
Interest rate derivatives	677,679		3,090		3,242,821		83,142		1,366,299		23,009		2,146,518		25,631
RPAs	84,702		19		100,294		43		93,713		80		116,882		111
Other	6,918		300		2,517		47		—		—		2,073		184
Total not designated as hedging instruments	4,698,683		17,057		3,449,411		83,889		4,288,183		29,745		3,056,079		28,423
Gross derivative instruments, before netting	$	5,023,683	22,008		$	3,449,411	83,889		$	4,613,183	32,515		$	3,056,079	28,423
Less: Legally enforceable master netting agreements			586				586				2,245				2,245
Less: Cash collateral posted			17,709				—				6,704				—
Total derivative instruments, after netting			$	3,713			$	83,303			$	23,566			$	26,178

(1) The Company has elected to report derivative positions subject to a legally enforceable master netting agreement on a net basis, net of cash collateral. Refer to the Offsetting Derivatives section of this footnote for additional information.

(2) Balances related to CME are presented as a single unit of account. Notional amounts of interest rate swaps cleared through CME include; $2.7 billion and $1.9 billion for asset derivatives and $47 million and $595 million for liability derivatives at September 30, 2018 and December 31, 2017, respectively, with related fair values of approximately zero.

(3) Notional amounts include mandatory forward commitments of $33.0 million, while notional amounts do not include approved floating rate commitments of $9.1 million, at September 30, 2018.

(4) Fair value of assets are included in accrued interest receivable and other assets, while, fair value of liabilities are included in accrued expenses and other liabilities, in the accompanying Condensed Consolidated Balance Sheets.

Income Statement Impact of Derivative Instruments

The following table presents the effect on the income statement from derivative positions:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Designated as cash flow hedging instruments:
Interest rate derivatives (1)	$	1,667		$	1,928		$	5,158		$	5,953
Not designated as hedging instruments:
Interest rate derivatives (2)	$	1,623		$	2,955		$	7,372		$	5,850
RPAs	22			51			117			157
Mortgage banking derivatives	(26		)	(219		)	(95		)	(1,886		)
Other (2)	(226		)	(756		)	1,113			(1,748		)
Total not designated as hedging instruments (2) (3)	$	1,393		$	2,031		$	8,507		$	2,373

(1) The impact from interest rate derivatives designated as hedging instruments is included in interest expense on borrowings in the accompanying Condensed Consolidated Statements of Income.

(2) Amounts for 2017 are presented as revised to include impact of accrued interest for net customer swap arrangements.

(3) The impact from the total not designated as hedging instruments is included in other non-interest income in the accompanying Condensed Consolidated Statements of Income.

Amounts for the effective portion of changes in the fair value of derivatives qualifying for hedge accounting treatment are reclassified to interest expense as interest payments are made on Webster's variable-rate debt. Over the next twelve months, the Company estimates that $264 thousand will be reclassified from AOCL as an increase to interest income.

Webster records gains and losses related to hedge terminations to AOCL. These balances are subsequently amortized into interest expense over the respective terms of the hedged debt instruments. At September 30, 2018, the remaining unamortized loss on the termination of cash flow hedges is $10.1 million. Over the next twelve months, the Company estimates that $4.3 million will be reclassified from AOCL as an increase to interest expense.

Additional information about cash flow hedge activity impacting AOCL, and the related amounts reclassified to interest expense is provided in Note 9:Accumulated Other Comprehensive Loss, Net of Tax. Information about the valuation methods used to measure the fair value of derivatives is provided in Note 13:Fair Value Measurements.

Offsetting Derivatives

Non-cleared derivatives subject to a legally enforceable master netting agreement are reported on a net basis, net of cash collateral. Net gain positions are recorded as assets and are included in accrued interest receivable and other assets, while, net loss positions are recorded as liabilities and are included in accrued expenses and other liabilities, in the accompanying Condensed Consolidated Balance Sheets.

The following table presents the transition from a gross basis to net basis, due to the application of counterparty netting agreements:

	At September 30, 2018								At December 31, 2017
(In thousands)	Gross Amount		Relationship Offset		Cash Collateral Offset		Net Amount		Gross Amount		Relationship Offset		Cash Collateral Offset		Net Amount
Derivative instrument gains:
Hedge accounting	$	4,951	$	—	$	4,951	$	—	$	2,770	$	91	$	2,679	$	—
Non-hedge accounting	13,425		586		12,758		81		6,222		2,154		4,025		43
Total assets	$	18,376	$	586	$	17,709	$	81	$	8,992	$	2,245	$	6,704	$	43
Derivative instrument losses:
Hedge accounting	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Non-hedge accounting	651		586		—		65		2,387		2,245		—		142
Total liabilities	$	651	$	586	$	—	$	65	$	2,387	$	2,245	$	—	$	142

Counterparty Credit Risk

Use of derivative contracts may expose Webster Bank to counterparty credit risk. The Company has International Swaps and Derivatives Association Master Agreements, including a Credit Support Annex, with all derivative counterparties.

In accordance with counterparty credit agreements and derivative clearing rules, the Company had approximately $80.0 million in net margin collateral received from financial counterparties or the derivative clearing organization at September 30, 2018, comprised of $36.3 million in initial margin posted, $98.2 million in settlement-to-market received, and $18.1 million in collateral-to-market received. Collateral levels for approved financial institution counterparties are monitored daily and adjusted as necessary. In the event of default, should the collateral not be returned, the exposure would be offset by terminating the transaction.

The Company regularly evaluates the credit risk of its counterparties, taking into account the likelihood of default, net exposures, and remaining contractual life, among other related factors. Credit risk exposure is mitigated as transactions with customers are generally secured by the same collateral of the underlying transactions being hedged. The Company's net current credit exposure relating to interest rate derivatives with Webster Bank customers was $3.1 million at September 30, 2018. In addition, the Company monitors potential future exposure, representing its best estimate of exposure to remaining contractual maturity. The potential future exposure relating to interest rate derivatives with Webster Bank customers totaled $31.7 million at September 30, 2018.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is best determined using quoted market prices. However, in many instances, quoted market prices are not available. In such instances, fair values are determined using appropriate valuation techniques. Various assumptions and observable inputs must be relied upon in applying these techniques. Accordingly, categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. As such, the fair value estimates may not be realized in an immediate transfer of the respective asset or liability.

Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the entire holdings or any part of a particular financial instrument. Fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These factors are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates.

Fair Value Hierarchy

The three levels within the fair value hierarchy are as follows:

• Level 1: Valuation is based upon unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

• Level 2: Fair value is calculated using significant inputs other than quoted market prices that are directly or indirectly observable for the asset or liability. The valuation may rely on quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit ratings,) or inputs that are derived principally or corroborated by market data, by correlation, or other means.

• Level 3: Inputs for determining the fair value of the respective assets or liabilities are not observable. Level 3 valuations are reliant upon pricing models and techniques that require significant management judgment or estimation.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Available-for-Sale Investment Securities. When quoted prices are available in an active market, the Company classifies investment securities within Level 1 of the valuation hierarchy. U.S. Treasury Bills are classified within Level 1 of the fair value hierarchy.

When quoted market prices are not available, the Company employs an independent pricing service that utilizes matrix pricing to calculate fair value. Such fair value measurements consider observable data such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayments speeds, credit information, and respective terms and conditions for debt instruments. Management maintains procedures to monitor the pricing service's results and establishes processes to challenge their valuations, or methodology, that appear unusual or unexpected. Available-for-Sale investment securities which include Agency CMO, Agency MBS, Agency CMBS, CMBS, CLO, and corporate debt, are classified within Level 2 of the fair value hierarchy.

Derivative Instruments. Foreign exchange contracts are valued based on unadjusted quoted prices in active markets and classified within Level 1 of the fair value hierarchy.

All other derivative instruments are valued using third-party valuation software, which considers the present value of cash flows discounted using observable forward rate assumptions. The resulting fair values are validated against valuations performed by independent third parties and are classified within Level 2 of the fair value hierarchy. In determining if any fair value adjustment related to credit risk is required, Webster evaluates the credit risk of its counterparties by considering factors such as the likelihood of default by the counterparties, its net exposures, the remaining contractual life, as well as the amount of collateral securing the position. The change in value of derivative assets and liabilities attributable to credit risk was not significant during the reported periods.

Webster reviews its counterparty exposure on a regular basis, and, when necessary, appropriate business actions are taken to mitigate the exposure. When determining fair value, Webster applies the portfolio exception with respect to measuring counterparty credit risk for all of its derivative transactions subject to a master netting arrangement. The CME rulebook legally characterizes variation margin payments for over-the-counter derivatives as settlements rather than collateral, which impacts Webster's counterparty relationship with CME, resulting in the fair value of the instrument including cash collateral to be represented as a single unit of account.

Mortgage Banking Derivatives. Forward sales of mortgage loans and mortgage-backed securities are utilized by the Company in its efforts to manage risk of loss associated with its mortgage loan commitments and mortgage loans held for sale. Prior to closing and funding certain single-family residential mortgage loans, an interest rate lock commitment is generally extended to the borrower. During the period from commitment date to closing date, the Company is subject to the risk that market rates of interest may change. If market rates rise, investors generally will pay less to purchase such loans resulting in a reduction in the gain on sale of the loans or, possibly, a loss. In an effort to mitigate such risk, forward delivery sales commitments are established, under which the Company agrees to deliver whole mortgage loans to various investors or into issuances of mortgage-backed securities. The fair value of mortgage banking derivatives is determined based on current market prices for similar assets in the secondary market and, therefore, classified within Level 2 of the fair value hierarchy.

Originated Loans Held For Sale. Residential mortgage loans typically are classified as held for sale upon origination based on management's intent to sell such loans. The Company has elected to measure originated loans held for sale under the fair value option of Accounting Standards Codification (ASC) Topic 825 "Financial Instruments," on a loan-by-loan basis. The fair value of residential mortgage loans held for sale is based on quoted market prices of similar loans sold in conjunction with securitization transactions. Accordingly, these loans are classified within Level 2 of the fair value hierarchy.

The following table presents the fair value, unpaid principal balance, and accrual status, of assets accounted for under the fair value option:

	At September 30, 2018							At December 31, 2017
(In thousands)	Fair Value		Unpaid Principal Balance		Difference			Fair Value		Unpaid Principal Balance		Difference
Originated loans held for sale	$	17,137	$	17,288	$	(151	)	$	20,888	$	20,346	$	542

Electing to measure originated loans held for sale at fair value reduces certain timing differences and better matches changes in the value of these assets with changes in the value of the derivatives used as an economic hedge on these assets.

Investments Held in Rabbi Trust. Investments held in the Rabbi Trust primarily include mutual funds that invest in equity and fixed income securities. Shares of mutual funds are valued based on unadjusted market prices in active markets for the underlying shares held in the mutual funds. Therefore, investments held in the Rabbi Trust are classified within Level 1 of the fair value hierarchy. Webster has elected to measure the investments held in the Rabbi Trust at fair value. The cost basis of the investments held in the Rabbi Trust is $2.0 million at September 30, 2018.

Alternative Investments. Equity investments have a readily determinable fair value when quoted prices are available in an active market. The Company classifies alternative investments with a readily determinable fair value within Level 1 of the fair value hierarchy.

Equity investments that do not have a readily available fair value may qualify for net asset value (NAV) measurement based on specific requirements. The Company's alternative investments accounted for at NAV consist of investments in non-public entities that generally cannot be redeemed since the Company’s investments are distributed as the underlying equity is liquidated. Alternative investments recorded at NAV are not classified within the fair value hierarchy. At September 30, 2018, these alternative investments had a remaining unfunded commitment of $1.1 million.

Summaries of the fair values of assets and liabilities measured at fair value on a recurring basis are as follows:

	At September 30, 2018
(In thousands)	Level 1		Level 2		Level 3		NAV		Total
Financial assets held at fair value:
U.S. Treasury Bills	$	9,214	$	—	$	—	$	—	$	9,214
Agency CMO	—		246,466		—		—		246,466
Agency MBS	—		1,409,731		—		—		1,409,731
Agency CMBS	—		570,549		—		—		570,549
CMBS	—		404,902		—		—		404,902
CLO	—		127,661		—		—		127,661
Single issuer-trust preferred	—		—		—		—		—
Corporate debt	—		55,430		—		—		55,430
Total available-for-sale investment securities	9,214		2,814,739		—		—		2,823,953
Gross derivative instruments, before netting (1)	498		21,510		—		—		22,008
Originated loans held for sale	—		17,137		—		—		17,137
Investments held in Rabbi Trust	4,930		—		—		—		4,930
Alternative investments	—		—		—		2,073		2,073
Total financial assets held at fair value	$	14,642	$	2,853,386	$	—	$	2,073	$	2,870,101
Financial liabilities held at fair value:
Gross derivative instruments, before netting (1)	$	462	$	83,427	$	—	$	—	$	83,889

	At December 31, 2017
(In thousands)	Level 1		Level 2		Level 3		NAV		Total
Financial assets held at fair value:
U.S. Treasury Bills	$	1,247	$	—	$	—	$	—	$	1,247
Agency CMO	—		306,333		—		—		306,333
Agency MBS	—		1,107,841		—		—		1,107,841
Agency CMBS	—		588,026		—		—		588,026
CMBS	—		361,067		—		—		361,067
CLO	—		209,851		—		—		209,851
Single issuer-trust preferred	—		7,050		—		—		7,050
Corporate debt	—		56,622		—		—		56,622
Total available-for-sale investment securities	1,247		2,636,790		—		—		2,638,037
Gross derivative instruments, before netting (1)	258		32,257		—		—		32,515
Originated loans held for sale	—		20,888		—		—		20,888
Investments held in Rabbi Trust	4,801		—		—		—		4,801
Alternative investments	—		—		—		3,495		3,495
Total financial assets held at fair value	$	6,306	$	2,689,935	$	—	$	3,495	$	2,699,736
Financial liabilities held at fair value:
Gross derivative instruments, before netting (1)	$	587	$	27,836	$	—	$	—	$	28,423

(1) For information relating to the impact of netting derivative assets and derivative liabilities as well as the impact from offsetting cash collateral paid to the same derivative counterparties see Note 12:Derivative Financial Instruments.

Assets Measured at Fair Value on a Non-Recurring Basis

Certain assets are measured at fair value on a non-recurring basis; that is, the assets are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances, for example, when there is evidence of impairment. The following is a description of valuation methodologies used for assets measured on a non-recurring basis.

Alternative Investments. The measurement alternative has been elected for alternative investments without readily determinable fair values that do not qualify for the NAV practical expedient. The measurement alternative requires investments to be accounted for at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. These alternative investments are investments in non-public entities that generally cannot be redeemed since the investment is distributed as the underlying equity is liquidated. Accordingly, these alternative investments are classified within Level 2 of the fair value hierarchy. The carrying amount of these alternative investments was $3.6 million at September 30, 2018. No reduction for impairments, or adjustments due to observable price changes, was identified during the three or nine months ended September 30, 2018.

Transferred Loans Held For Sale. Certain loans are transferred to loans held for sale once a decision has been made to sell such loans. These loans are accounted for at the lower of cost or market and are considered to be recognized at fair value when they are recorded at below cost. This activity primarily consists of commercial loans with observable inputs and is classified within Level 2. On the occasion that these loans should include adjustments for changes in loan characteristics using unobservable inputs, the loans would be classified within Level 3.

Collateral Dependent Impaired Loans and Leases. Impaired loans and leases for which repayment is expected to be provided solely by the value of the underlying collateral are considered collateral dependent and are valued based on the estimated fair value of such collateral using customized discounting criteria. As such, collateral dependent impaired loans and leases are classified as Level 3 of the fair value hierarchy.

Other Real Estate Owned and Repossessed Assets. The total book value of other real estate owned (OREO) and repossessed assets was $5.3 million at September 30, 2018. OREO and repossessed assets are accounted for at the lower of cost or market and are considered to be recognized at fair value when they are recorded at below cost. The fair value of OREO is based on independent appraisals or internal valuation methods, less estimated selling costs. The valuation may consider available pricing guides, auction results, and price opinions. Certain assets require assumptions about factors that are not observable in an active market in the determination of fair value; as such, OREO and repossessed assets are classified within Level 3 of the fair value hierarchy.

At September 30, 2018, there were no significant assets measured at fair value on a non-recurring basis.Fair Value of Financial Instruments and Servicing Assets

The Company is required to disclose the estimated fair value of, financial instruments, both assets and liabilities, for which it is practicable to estimate fair value, as well as servicing assets. The following is a description of valuation methodologies used for those assets and liabilities.

Cash, Due from Banks, and Interest-bearing Deposits. The carrying amount of cash, due from banks, and interest-bearing deposits is used to approximate fair value, given the short time frame to maturity and, as such, these assets do not present unanticipated credit concerns. Cash, due from banks, and interest-bearing deposits are classified within Level 1 of the fair value hierarchy.

Held-to-Maturity Investment Securities. When quoted market prices are not available, the Company employs an independent pricing service that utilizes matrix pricing to calculate fair value. Such fair value measurements consider observable data such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayments speeds, credit information, and respective terms and conditions for debt instruments. Management maintains procedures to monitor the pricing service's results and establishes processes to challenge their valuations, or methodology, that appear unusual or unexpected. Held-to-Maturity investment securities, which include Agency CMO, Agency MBS, Agency CMBS, CMBS, municipal bonds and notes, and private label MBS securities, are classified within Level 2 of the fair value hierarchy.

Loans and Leases, net. The estimated fair value of loans and leases held for investment is calculated using a discounted cash flow method, using future prepayments and market interest rates inclusive of an illiquidity premium for comparable loans and leases. The associated cash flows are adjusted for credit and other potential losses. Fair value for impaired loans and leases is estimated using the net present value of the expected cash flows. Loans and leases are classified within Level 3 of the fair value hierarchy.

Deposit Liabilities. The fair value of demand deposits, savings accounts, and certain money market deposits is the amount payable on demand at the reporting date. Deposit liabilities are classified within Level 2 of the fair value hierarchy.

Time Deposits. The fair value of a fixed-maturity certificate of deposit is estimated using the rates currently offered for deposits of similar remaining maturities. Time deposits are classified within Level 2 of the fair value hierarchy.

Securities Sold Under Agreements to Repurchase and Other Borrowings. The carrying value is an estimate of fair value for those securities sold under agreements to repurchase and other borrowings that mature within 90 days. Fair value of all other borrowings is estimated using discounted cash flow analysis based on current market rates adjusted, as appropriate, for associated credit risks. Securities sold under agreements to repurchase and other borrowings are classified within Level 2 of the fair value hierarchy.

Federal Home Loan Bank Advances and Long-Term Debt. The fair value of FHLB advances and long-term debt is estimated using a discounted cash flow technique. Discount rates are matched with the time period of the expected cash flow and are adjusted, as appropriate, to reflect credit risk. FHLB advances and long-term debt are classified within Level 2 of the fair value hierarchy.

Mortgage Servicing Assets. Mortgage servicing assets are accounted for at cost and subsequently measured under the amortization method. Mortgage servicing assets are subject to impairment testing and considered to be recognized at fair value when they are recorded at below cost. Amortization, and impairment charges, if any, are included as a component of other non-interest income in the accompanying Condensed Consolidated Statements of Income. Fair value is calculated as the present value of estimated future net servicing income and relies on market based assumptions for loan prepayment speeds, servicing costs, discount rates, and other economic factors; as such, the primary risk inherent in valuing mortgage servicing assets is the impact of fluctuating interest rates on the servicing revenue stream. Mortgage servicing assets are classified within Level 3 of the fair value hierarchy.

The estimated fair values of selected financial instruments and servicing assets are as follows:

	At September 30, 2018				At December 31, 2017
(In thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Level 2
Held-to-maturity investment securities	$	4,332,458	$	4,164,359	$	4,487,392	$	4,456,350
Level 3
Loans and leases, net	18,109,187		17,913,452		17,323,864		17,211,619
Mortgage servicing assets	22,644		48,661		25,139		45,309
Liabilities:
Level 2
Deposit liabilities	$	18,902,371	$	18,902,371	$	18,525,321	$	18,525,321
Time deposits	3,095,252		3,067,487		2,468,408		2,455,245
Securities sold under agreements to repurchase and other borrowings	564,488		564,396		643,269		644,084
FHLB advances	1,441,884		1,439,155		1,677,105		1,678,070
Long-term debt (1)	225,957		229,336		225,767		234,359

(1)

Adjustments to the carrying amount of long-term debt for unamortized discount and debt issuance cost on senior fixed-rate notes are not included for determination of fair value, see Note 8:Borrowings.

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Retirement Benefit Plans

9 Months Ended

Sep. 30, 2018

Retirement Benefits [Abstract]

Retirement Benefit Plans

Retirement Benefit Plans

Defined benefit pension and other postretirement benefits

The following table summarizes the components of net periodic benefit cost:

	Three months ended September 30,
	2018							2017
(In thousands)	Pension Plan			SERP		Other Benefits		Pension Plan			SERP		Other Benefits
Service cost	$	—		$	—	$	—	$	12		$	—	$	—
Interest cost on benefit obligations	1,857			35		20		1,829			96		19
Expected return on plan assets	(3,178		)	—		—		(3,074		)	—		—
Amortization of prior service cost	—			—		—		—			—		—
Recognized net loss	1,160			2,271		—		1,466			136		(15		)
Net periodic benefit cost	$	(161	)	$	2,306	$	20	$	233		$	232	$	4

	Nine months ended September 30,
	2018							2017
(In thousands)	Pension Plan			SERP		Other Benefits		Pension Plan			SERP		Other Benefits
Service cost	$	—		$	—	$	—	$	37		$	—	$	—
Interest cost on benefit obligations	5,577			201		59		5,486			281		69
Expected return on plan assets	(9,538		)	—		—		(9,222		)	—		—
Amortization of prior service cost	—			—		—		—			—		—
Recognized net loss	3,480			2,729		—		4,398			561		—
Net periodic benefit cost	$	(481	)	$	2,930	$	59	$	699		$	842	$	69

The components of net periodic benefit cost, other than the service cost component, are included as a component of other expense reflected in non-interest expense in the accompanying Condensed Consolidated Statements of Income.

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Share-Based Plans

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Plans

Share-Based Plans

Stock compensation plans

Webster maintains stock compensation plans under which restricted stock, restricted stock units, non-qualified stock options, incentive stock options, or stock appreciation rights may be granted to employees and directors. The Company believes these share awards better align the interests of its employees with those of its shareholders. Stock compensation cost is recognized over the required service vesting period for the awards, based on the grant-date fair value, net of estimated forfeitures, and is included as a component of compensation and benefits reflected in non-interest expense.

Stock compensation expense of $2.7 million and $3.0 million for the three months ended September 30, 2018 and 2017, respectively, and $8.6 million and $9.1 million for the nine months ended September 30, 2018 and 2017, respectively, related to restricted stock awards, was recognized in the accompanying Condensed Consolidated Statements of Income.

At September 30, 2018 there was $16.4 million of unrecognized stock compensation expense for restricted stock expected to be recognized over a weighted-average period of 2.0 years.

The following table provides a summary of the stock compensation plans activity for the nine months ended September 30, 2018:

	Restricted Stock Awards Outstanding						Stock Options Outstanding
	Time-Based			Performance-Based
	Number of Shares	Weighted-Average Grant Date Fair Value		Number of Shares	Weighted-Average Grant Date Fair Value		Number  of Shares	Weighted-Average Exercise Price
Outstanding, at January 1, 2018	207,800	$	43.16	78,916	$	45.35	673,039	$	18.75
Granted	145,382	58.36		75,707	55.82		—	—
Vested restricted stock awards (1)	129,445	44.80		55,112	46.08		—	—
Forfeited	8,041	52.53		13,847	51.19		—	—
Exercised options	—	—		—	—		180,247	11.71
Outstanding and exercisable, at September 30, 2018	215,696	51.91		85,664	53.19		492,792	21.33

(1) Vested for purposes of recording compensation expense.

Time-based restricted stock. Time-based restricted stock awards vest over the applicable service period ranging from 1 to 3 years. The number of time-based awards that may be granted to an eligible individual in a calendar year is limited to 100,000 shares. Compensation expense is recorded over the vesting period based on a fair value, which is measured using the Company's common stock closing price at the date of grant.

Performance-based restricted stock. Performance-based restricted stock awards vest after a 3 year performance period. The awards vest with a share quantity dependent on that performance, in a range from 0 to 150%. The performance criteria for 50% of the shares granted in 2018 is based upon Webster's ranking for total shareholder return versus Webster's compensation peer group companies and the remaining 50% is based upon Webster's average of return on equity during the 3 year vesting period. The compensation peer group companies are utilized because they represent the financial institutions that best compare with Webster. The Company records compensation expense over the vesting period, based on a fair value calculated using the Monte-Carlo simulation model, which allows for the incorporation of the performance condition for the 50% of the performance-based shares tied to total shareholder return versus the compensation peer group, and based on a fair value of the market price on the date of grant for the remaining 50% of the performance-based shares tied to Webster's return on equity. Compensation expense is subject to adjustment based on management's assessment of Webster's return on equity performance relative to the target number of shares condition.

Stock options. Stock option awards have an exercise price equal to the market price of Webster Financial Corporation's stock on the date of grant. Each option grants the holder the right to acquire a share of Webster Financial Corporation common stock over a contractual life of up to 10 years. All awarded options have vested. There were 458,904 non-qualified stock options and 33,888 incentive stock options outstanding at September 30, 2018.

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Segment Reporting

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Segment Reporting

Segment Reporting

Webster’s operations are organized into three reportable segments that represent its primary businesses - Commercial Banking, HSA Bank, and Community Banking. These three segments reflect how executive management responsibilities are assigned, the primary businesses, the products and services provided, the type of customer served, and how discrete financial information is currently evaluated. The Corporate Treasury unit of the Company, along with the amounts required to reconcile profitability metrics to amounts reported in accordance with GAAP, are included in the Corporate and Reconciling category.

Description of Segment Reporting Methodology

Webster’s reportable segment results are intended to reflect each segment as if it were a stand-alone business. Webster uses an internal profitability reporting system to generate information by operating segment, which is based on a series of management estimates and allocations regarding funds transfer pricing, provision for loan and lease losses, non-interest expense, income taxes, and equity capital. These estimates and allocations, certain of which are subjective in nature, are periodically reviewed and refined. Changes in estimates and allocations that affect the reported results of any operating segment do not affect the consolidated financial position or results of operations of Webster as a whole. The full profitability measurement reports, which are prepared for each operating segment, reflect non-GAAP reporting methodologies. The differences between full profitability and GAAP results are reconciled in the Corporate and Reconciling category.

Webster allocates interest income and interest expense to each business, while also transferring the primary interest rate risk exposures to the Corporate and Reconciling category, using a matched maturity funding concept called Funds Transfer Pricing (FTP). The allocation process considers the specific interest rate risk and liquidity risk of financial instruments and other assets and liabilities in each line of business. The matched maturity funding concept considers the origination date and the earlier of the maturity date or the repricing date of a financial instrument to assign an FTP rate for loans and deposits originated each day. Loans are assigned an FTP rate for funds used and deposits are assigned an FTP rate for funds provided. This process is executed by the Company’s Financial Planning and Analysis division and is overseen by the Company's Asset/Liability Committee (ALCO).

Webster allocates the provision for loan and lease losses to each segment based on management’s estimate of the inherent loss content in each of the specific loan and lease portfolios.

Webster allocates a majority of non-interest expense to each reportable segment using a full-absorption costing process. Costs, including corporate overhead, are analyzed, pooled by process, and assigned to the appropriate reportable segment. A $10.0 million charge related to additional FDIC premiums pertaining to prior periods' deposit insurance assessments and related interest is included in the Corporate and Reconciling category for the nine months ended September 30, 2018. See Note 1 to the Condensed Consolidated Financial Statements included in Item 1 of this report for additional information.

Beginning in 2018, income tax expense is estimated for each reportable segment individually. The 2017 income tax expense was estimated for all segments using the consolidated effective tax rate. This change in the estimate of income tax expense reflects an estimate of full profitability for each of the individual business segments based on the nature of their operations.

The following table presents total assets for Webster's reportable segments and the Corporate and Reconciling category:

(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling		Consolidated Total
At September 30, 2018	$	10,327,878	$	71,172	$	8,730,295	$	8,216,972	$	27,346,317
At December 31, 2017	9,350,028		76,308		8,909,671		8,151,638		26,487,645

The following tables present the operating results, including all appropriate allocations, for Webster’s reportable segments and the Corporate and Reconciling category:

	Three months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	91,243	$	36,731	$	101,952	$	446		$	230,372
Provision (benefit) for loan and lease losses	8,207		—		2,293		—			10,500
Net interest income (expense) after provision for loan and lease losses	83,036		36,731		99,659		446			219,872
Non-interest income	18,305		22,159		26,848		4,972			72,284
Non-interest expense	44,506		30,753		95,769		7,755			178,783
Income (loss) before income tax expense	56,835		28,137		30,738		(2,337		)	113,373
Income tax expense (benefit)	13,981		7,316		6,117		(13,714		)	13,700
Net income (loss)	$	42,854	$	20,821	$	24,621	$	11,377		$	99,673

	Three months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking			Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	81,925	$	26,713	$	96,859		$	(4,593	)	$	200,904
Provision (benefit) for loan and lease losses	12,073		—		(1,923		)	—			10,150
Net interest income (expense) after provision for loan and lease losses	69,852		26,713		98,782			(4,593		)	190,754
Non-interest income	13,207		19,371		27,079			6,189			65,846
Non-interest expense	38,339		27,222		92,478			3,784			161,823
Income (loss) before income tax expense	44,720		18,862		33,383			(2,188		)	94,777
Income tax expense (benefit)	14,363		6,006		10,605			(693		)	30,281
Net income (loss)	$	30,357	$	12,856	$	22,778		$	(1,495	)	$	64,496

	Nine months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	264,353	$	104,920	$	302,782	$	(2,505	)	$	669,550
Provision for loan and lease losses	26,300		—		5,700		—			32,000
Net interest income (expense) after provision for loan and lease losses	238,053		104,920		297,082		(2,505		)	637,550
Non-interest income	48,662		67,710		78,421		14,612			209,405
Non-interest expense	128,730		93,488		287,795		20,844			530,857
Income (loss) before income tax expense	157,985		79,142		87,708		(8,737		)	316,098
Income tax expense (benefit)	38,864		20,577		17,454		(22,377		)	54,518
Net income	$	119,121	$	58,565	$	70,254	$	13,640		$	261,580

	Nine months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking			Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	239,118	$	76,339	$	286,351		$	(10,453	)	$	591,355
Provision (benefit) for loan and lease losses	29,562		—		(1,662		)	—			27,900
Net interest income (expense) after provision for loan and lease losses	209,556		76,339		288,013			(10,453		)	563,455
Non-interest income	39,163		58,392		80,516			15,368			193,439
Non-interest expense	113,767		84,211		281,979			10,069			490,026
Income (loss) before income tax expense	134,952		50,520		86,550			(5,154		)	266,868
Income tax expense (benefit)	41,125		15,395		26,374			(1,572		)	81,322
Net income (loss)	$	93,827	$	35,125	$	60,176		$	(3,582	)	$	185,546

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Revenue from Contracts with Customers Revenue from Contracts with customers

9 Months Ended

Sep. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

Revenue from Contracts with Customers

The Company adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606), and the subsequent clarifying ASUs, effective January 1, 2018. The Updates are applicable to the Company's deposit service fees, wealth and investment services, and an insignificant component of other income included within non-interest income in the accompanying Condensed Consolidated Statements of Income.

The Company's revenue associated with net interest income, and certain non-interest income line items (loan and lease related fees, mortgage banking activities, increase in cash surrender value of life insurance policies, gain on sale of investment securities, net, impairment loss on securities recognized in earnings, and a majority of other income), are not within the scope of Topic 606. As a result, a substantial amount of the Company's revenue is not affected.

Under the updated guidance, for in-scope revenue streams, the Company identifies the performance obligations included in the contracts with customers, determines the transaction price, allocates the transaction price to the performance, as applicable, and recognizes revenue when performance obligations are satisfied. The Company's existing recognition practices are largely consistent with the updated guidance.

The following tables present the disaggregation by operating segment and major revenue stream, with disaggregated revenue reconciled to segment revenue as presented in Note 16:Segment Reporting:

	Three months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	3,211	$	21,294	$	16,107	$	(11	)	$	40,601
Wealth and investment services	2,577		—		5,843		(8		)	8,412
Other income	—		865		352		—			1,217
Revenue from contracts with customers	5,788		22,159		22,302		(19		)	50,230
Non-interest income within the scope of other GAAP topics	12,517		—		4,546		4,991			22,054
Total non-interest income	$	18,305	$	22,159	$	26,848	$	4,972		$	72,284

	Three months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	3,119	$	18,658	$	16,435	$	109		$	38,321
Wealth and investment services	2,471		—		5,288		(9		)	7,750
Other income	—		713		216		—			929
Revenue from contracts with customers	5,590		19,371		21,939		100			47,000
Non-interest income within the scope of other GAAP topics	7,617		—		5,140		6,089			18,846
Total non-interest income	$	13,207	$	19,371	$	27,079	$	6,189		$	65,846

	Nine months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	9,613	$	65,112	$	47,079	$	107		$	121,911
Wealth and investment services	7,703		—		17,060		(25		)	24,738
Other income	—		2,598		1,485		—			4,083
Revenue from contracts with customers	17,316		67,710		65,624		82			150,732
Non-interest income within the scope of other GAAP topics	31,346		—		12,797		14,530			58,673
Total non-interest income	$	48,662	$	67,710	$	78,421	$	14,612		$	209,405

	Nine months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	9,012	$	56,176	$	48,046	$	285		$	113,519
Wealth and investment services	7,288		—		15,638		(26		)	22,900
Other income	—		2,216		603		—			2,819
Revenue from contracts with customers	16,300		58,392		64,287		259			139,238
Non-interest income within the scope of other GAAP topics	22,863		—		16,229		15,109			54,201
Total non-interest income	$	39,163	$	58,392	$	80,516	$	15,368		$	193,439

Deposit service fees

Deposit service fees predominately consist of fees earned from deposit accounts and interchange revenue. Fees earned from deposit accounts relate to event-driven services and periodic account maintenance activities. Webster's obligations for event-driven services are satisfied at the time the service is delivered, while the obligations for maintenance services is satisfied monthly. Interchange fees are assessed as the performance obligation is satisfied, which is at the point in time the card transaction is authorized.

Wealth and investment services

Wealth and investment services consists of fees earned from investment and securities-related services, trust and other related services. Obligations for wealth and investment services are generally satisfied over time through a time-based measurement of progress, but certain obligations may be satisfied at points in time for activities that are transactional in nature.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Credit-Related Financial Instruments

The Company offers credit-related financial instruments in the normal course of business to meet certain financing needs of its customers, that involve off-balance sheet risk. These transactions may include an unused commitment to extend credit, standby letter of credit, or commercial letter of credit. Such transactions involve, to varying degrees, elements of credit risk.

The following table summarizes the outstanding amounts of credit-related financial instruments with off-balance sheet risk:

(In thousands)	At September 30, 2018		At December 31, 2017
Commitments to extend credit	$	5,683,275	$	5,567,687
Standby letter of credit	185,859		195,902
Commercial letter of credit	36,393		43,200
Total credit-related financial instruments with off-balance sheet risk	$	5,905,527	$	5,806,789

Commitments to Extend Credit. The Company makes commitments under various terms to lend funds to customers at a future point in time. These commitments include revolving credit arrangements, term loan commitments, and short-term borrowing agreements. Most of these loans have fixed expiration dates or other termination clauses where a fee may be required. Since commitments routinely expire without being funded, or after required availability of collateral occurs, the total commitment amount does not necessarily represent future liquidity requirements.

Standby Letter of Credit. A standby letter of credit commits the Company to make payments on behalf of customers if certain specified future events occur. The Company has recourse against the customer for any amount required to be paid to a third party under a standby letter of credit, which is often part of a larger credit agreement under which security is provided. Historically, a large percentage of standby letters of credit expire without being funded. The contractual amount of a standby letter of credit represents the maximum amount of potential future payments the Company could be required to make, and is the Company's maximum credit risk.

Commercial Letter of Credit. A commercial letter of credit is issued to facilitate either domestic or foreign trade arrangements for customers. As a general rule, drafts are committed to be drawn when the goods underlying the transaction are in transit. Similar to a standby letter of credit, a commercial letter of credit is often secured by an underlying security agreement including the assets or inventory to which they relate.

These commitments subject the Company to potential exposure in excess of the amounts recorded in the financial statements, and therefore, management maintains a specific reserve for unfunded credit commitments. This reserve is reported as a component of accrued expenses and other liabilities in the accompanying Condensed Consolidated Balance Sheets.

The following table provides a summary of activity in the reserve for unfunded credit commitments:

	Three months ended September 30,				Nine months ended September 30,
(In thousands)	2018		2017		2018		2017
Beginning balance	$	2,596	$	2,544	$	2,362	$	2,287
Provision charged to expense	28		—		262		257
Ending balance	$	2,624	$	2,544	$	2,624	$	2,544

Litigation

Webster is involved in routine legal proceedings occurring in the ordinary course of business and is subject to loss contingencies related to such litigation and claims arising therefrom. Webster evaluates these contingencies based on information currently available, including advice of counsel and assessment of available insurance coverage. Webster establishes an accrual for litigation and claims when a loss contingency is considered probable and the related amount is reasonably estimable. This accrual is periodically reviewed and may be adjusted as circumstances change. Webster also estimates certain loss contingencies for possible litigation and claims, whether or not there is an accrued probable loss. Webster believes it has defenses to all the claims asserted against it in existing litigation matters and intends to defend itself in all matters.

Based upon its current knowledge, after consultation with counsel and after taking into consideration its current litigation accrual, Webster believes that at September 30, 2018 any reasonably possible losses, in addition to amounts accrued, are not material to Webster’s consolidated financial condition. However, in light of the uncertainties involved in such actions and proceedings, there is no assurance that the ultimate resolution of these matters will not significantly exceed the amounts currently accrued by Webster or that the Company’s litigation accrual will not need to be adjusted in future periods. Such an outcome could be material to the Company’s operating results in a particular period, depending on, among other factors, the size of the loss or liability imposed and the level of the Company’s income for that period.

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Subsequent Events (Notes)

9 Months Ended

Sep. 30, 2018

Subsequent Events [Abstract]

Subsequent Events [Text Block]

Subsequent Events

The Company has evaluated events from the date of the Condensed Consolidated Financial Statements and accompanying Notes thereto, September 30, 2018, through the issuance of this Quarterly Report on Form 10-Q and determined that no significant events were identified requiring recognition or disclosure, except as identified below.

The sale of six banking center locations closed on October 5, 2018. Deposits of approximately $105 million were transfered with the banking centers, while the Company retained lending and investment services relationships.

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

The accounting and reporting policies of the Company that materially affect its financial statements conform with U.S. Generally Accepted Accounting Principles (GAAP). The accompanying unaudited Condensed Consolidated Financial Statements of the Company have been prepared in conformity with the instructions for Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all the information and notes required by GAAP for complete financial statements and should be read in conjunction with the Company's Consolidated Financial Statements, and Notes thereto, for the year ended December 31, 2017, included in the Company's Annual Report on Form 10-K filed with the U.S. Securities and Exchange Commission (SEC) on March 1, 2018.

Use of Estimates

The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities as of the date of the financial statements as well as income and expense during the period. Actual results could differ from those estimates. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for the full year or any future period

New Accounting Pronouncements, Policy [Policy Text Block]

Accounting Standards Adopted During 2018

Effective January 1, 2018, the following new Accounting Standards Updates (ASUs) were adopted by the Company:

ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.

The Update shortens the amortization period for certain investments in callable debt securities purchased at a premium by requiring that the premium be amortized to the earliest call date. Prior to adoption, the Company amortized the premium as a yield adjustment over the contractual life of such debt securities held within the portfolio. The Update accelerates the Company's recognition of premium amortization on those debt securities.

The Company adopted the Update during the first quarter of 2018 on a modified retrospective basis. As a result, the Company recorded a $2.8 million cumulative-effect adjustment directly to retained earnings as of January 1, 2018.

ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715) - Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.

The Update requires the Company to retrospectively report service cost as a part of compensation expense and the other components of net periodic benefit cost separately from service cost in the Company's consolidated financial statements. The Company previously included all components of net periodic benefit cost as a component of compensation and benefits expense. Upon adoption, only service cost remains in compensation and benefits expense, while the interest cost on benefit obligations, expected return on plan assets, amortization of prior service cost, and recognized net loss components of the net periodic benefit cost are included in other expense.

The Company adopted the Update during the first quarter of 2018 on a retrospective basis. As a result, the Company reclassified, for prior periods, the components of it's net periodic benefit costs other than the service cost component from compensation and benefits to other expense in the accompanying Condensed Consolidated Statements of Income. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

ASU No. 2016-15, Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments.

The Update addresses the following eight specific cash flow issues, with the objective of reducing the existing diversity in practice: debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle.

The Company adopted the Update during the first quarter of 2018 on a retrospective basis. The adoption of this guidance did not have a material impact on the Company's consolidated financial statements.

ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10) - Recognition and Measurement of Financial Assets and Financial Liabilities, and ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments - Overall (Subtopic 825-10) - Recognition and Measurement of Financial Assets and Financial Liabilities.

The Updates included targeted amendments in connection with the recognition, measurement, presentation, and disclosure of financial instruments. The main provisions require investments in equity securities to be measured at fair value through net income, unless they qualify for a practical expedient, and require fair value changes arising from changes in instrument-specific credit risk for financial liabilities that are measured under the fair value option to be recognized in other comprehensive income. The provisions also emphasized the existing requirement to use exit prices to measure fair value for disclosure purposes.

The Company adopted the Updates during the first quarter of 2018 primarily on a modified retrospective basis. As a result, the Company recorded a benefit of $1.4 million for a cumulative-effect adjustment directly to retained earnings as of January 1, 2018, due to a change in valuation method, from cost less impairment, to net asset value using the practical expedient. Also, the measurement alternative has been elected for equity securities, existing as of January 1, 2018, without readily determinable fair values on a prospective basis.

ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) and subsequent ASUs issued to clarify this Topic.

The Update, and subsequent related updates, establish a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most previous revenue recognition guidance, including industry-specific guidance. The Updates are intended to increase comparability across industries. The core principle of the revenue model is that a company will recognize revenue when it transfers control of goods or services to customers, at an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services.

The Company adopted the Updates during the first quarter of 2018 on a modified retrospective transition approach. The Company did not identify any material changes to the timing of revenue recognition. The Company is changing how it presents certain recurring revenue streams associated with wealth and investment services as other income, versus a contra expense. The adoption of this guidance did not have a material impact on the Company's financial condition or results of operations, and there was no cumulative effect adjustment to opening retained earnings as no material changes were identified in the timing of revenue recognition, however, additional disclosure has been incorporated in Note 17:Revenue from Contracts with Customers.

Accounting Standards Issued But Not Yet Adopted

The following list identifies ASUs applicable to the Company that have been issued by the FASB but are not yet effective:

ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract

The Update aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The updated guidance also requires an entity to amortize the capitalized implementation costs as an expense over the term of the hosting arrangement and to present in the same income statement line item as the fees associated with the hosting arrangement.

This Update is effective for the Company on January 1, 2020, with early adoption permitted. The Company does not intend to early adopt this Update. The Company will apply the amendments in this update prospectively to all implementation costs incurred after the date of adoption. The Company does not expect this Update to have a material impact on its consolidated financial statements.

ASU No. 2018-14, Compensation-Retirement Benefits - Defined Benefit Plan - General (Subtopic 715-20) - Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans  

The Update modifies the disclosure requirements for defined benefit pension plans and other postretirement plans. This updated guidance will be effective for the Company on January 1, 2021. The Company does not expect this Update to have a material impact on its consolidated financial statements.

ASU No. 2018-13, Fair Value Measurement (Topic 820) - Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement

The Update modifies the disclosure requirements on fair value measurements. The updated guidance will no longer require entities to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy. However, it will require public companies to disclose changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 measurements.

This Update is effective for the Company on January 1, 2020, and earlier adoption is permitted. The Company does not expect this Update to have a material impact on its consolidated financial statements.

ASU No. 2017-12, Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities.

The purpose of the Update is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. The update requires a modified retrospective transition method in which a Company will recognize a cumulative effect of the change on the opening balance for each affected component of equity in the financial statements as of the date of adoption.

The Update is effective for the Company on January 1, 2019. The Company does not expect the new guidance to have a material impact on its consolidated financial statements.

ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.

The Update simplifies quantitative goodwill impairment testing by requiring entities to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for any amount by which the carrying amount exceeds the reporting unit's fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit.

This changes current guidance by eliminating the second step of the goodwill impairment analysis which involves calculating the implied fair value of goodwill determined in the same manner as the amount of goodwill recognized in a business combination upon acquisition. Entities will still have the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary.

The Update is effective for the Company on January 1, 2020 and early adoption is permitted. The Update must be applied prospectively. The Company does not expect the new guidance to have a material impact on its consolidated financial statements.

ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments.

Current GAAP requires an incurred loss methodology for recognizing credit losses. This approach delays recognition until it is probable a loss has been incurred. Both financial institutions and users of their financial statements expressed concern that current GAAP restricts the ability to record credit losses that are expected, but do not yet meet the probable threshold.

The main objective of this Update is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. To achieve this objective, the amendments in this Update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to determine credit loss estimates.

The Change from an incurred loss method to an expected loss method represents a fundamental shift from existing GAAP and may result in a material increase to the Company's accounting for credit losses on financial instruments. To prepare for implementation of the new standard the Company has established a project lead and has empowered a cross functional steering committee comprised of members from different disciplines including Credit, Finance and Treasury as well as specific working groups to focus on key components of the development process. Through these working groups, the Company has begun to evaluate the effect that this Update will have on its financial statements and related disclosures. An implementation project plan has been created and is made up of targeted work streams focused on credit models, data management, treasury, and accounting. These work streams are collectively assessing required resources, use of existing and new models, and data availability. The Company expects that the new credit models will include additional assumptions used to calculate credit losses over the estimated life of the financial assets and will include expected future changes in macroeconomic conditions. The Company contracted with system solution providers and is in the process of implementing the selected solutions that will be used to run its credit loss models.

The Update is effective for the Company on January 1, 2020. The impact of adopting the Update is expected to be influenced by assessment of the composition, characteristics, and credit quality of our loan and securities portfolios as well as the economic conditions in effect at the adoption date. Therefore, we are unable to reasonably estimate the impact of adopting the Update at this time.

ASU No. 2016-02, Leases (Topic 842) and subsequent ASUs issued to amend this Topic.

The Update introduces a lessee model that requires substantially all leases to be recorded as assets and liabilities on the balance sheet and will require both quantitative and qualitative disclosures regarding key information about leasing arrangements. During Q3 2018, the FASB issued a subsequent Update which, among other issues, incorporates a new transition method option that would allow the Company to use the effective date, January 1, 2019 for the Company, as the date of initial application of the new leases standard and recognize cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Company currently expects to elect this transition method.

The Company is in the process of reviewing its existing leases, and certain service contracts for embedded leases, to evaluate the impact of these Updates on the consolidated financial statements. The Company has engaged a third party consultant to assist with the implementation efforts and has selected a third party software solution to assist with the accounting under these Updates.

The Updates are effective beginning January 1, 2019 and early adoption is permitted. The Company does not plan to early adopt, and the effect of the adoption will depend on the lease portfolio at the time of transition.

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Investment Securities (Tables)

9 Months Ended

Sep. 30, 2018

Investments, Debt and Equity Securities [Abstract]

Summary of Investment Securities

A summary of the amortized cost and fair value of investment securities is presented below:

	At September 30, 2018									At December 31, 2017
(In thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value		Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Available-for-sale:
U.S. Treasury Bills	$	9,215	$	—	$	(1	)	$	9,214	$	1,247	$	—	$	—		$	1,247
Agency CMO	254,549		79		(8,162		)	246,466		308,989		1,158		(3,814		)	306,333
Agency MBS	1,466,973		641		(57,883		)	1,409,731		1,124,960		2,151		(19,270		)	1,107,841
Agency CMBS	610,411		—		(39,862		)	570,549		608,276		—		(20,250		)	588,026
CMBS	404,104		850		(52		)	404,902		358,984		2,157		(74		)	361,067
CLO	127,743		202		(284		)	127,661		209,075		910		(134		)	209,851
Single issuer-trust preferred	—		—		—			—		7,096		—		(46		)	7,050
Corporate debt	56,032		361		(963		)	55,430		56,504		797		(679		)	56,622
Available-for-sale	$	2,929,027	$	2,133	$	(107,207	)	$	2,823,953	$	2,675,131	$	7,173	$	(44,267	)	$	2,638,037
Held-to-maturity:
Agency CMO	$	218,351	$	143	$	(9,192	)	$	209,302	$	260,114	$	664	$	(4,824	)	$	255,954
Agency MBS	2,535,043		8,256		(110,035		)	2,433,264		2,569,735		16,989		(37,442		)	2,549,282
Agency CMBS	672,505		—		(28,222		)	644,283		696,566		—		(10,011		)	686,555
Municipal bonds and notes	684,587		804		(26,487		)	658,904		711,381		8,584		(6,558		)	713,407
CMBS	221,969		380		(3,746		)	218,603		249,273		2,175		(620		)	250,828
Private Label MBS	3		—		—			3		323		1		—			324
Held-to-maturity	$	4,332,458	$	9,583	$	(177,682	)	$	4,164,359	$	4,487,392	$	28,413	$	(59,455	)	$	4,456,350

Summary of Changes in OTTI

The following table presents activity for OTTI:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	1,103		$	3,231		$	1,364		$	3,243
Reduction for investment securities called	(281		)	(1,028		)	(542		)	(1,166		)
Additions for OTTI not previously recognized in earnings	—			—			—			126
Ending balance	$	822		$	2,203		$	822		$	2,203

Summary of Gross Unrealized Losses not Considered OTTI

The following tables provide information on fair value and unrealized losses for the individual investment securities with an unrealized loss, aggregated by classification and length of time that the individual investment securities have been in a continuous unrealized loss position:

	At September 30, 2018
	Less Than Twelve Months					Twelve Months or Longer					Total
(Dollars in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			# of Holdings	Fair Value		Unrealized Losses
Available-for-sale:
U.S. Treasury Bills	$	9,214	$	(1	)	$	—	$	—		2	$	9,214	$	(1	)
Agency CMO	108,055		(2,046		)	123,570		(6,116		)	43	231,625		(8,162		)
Agency MBS	632,866		(13,665		)	751,739		(44,218		)	185	1,384,605		(57,883		)
Agency CMBS	28,075		(1,074		)	542,474		(38,788		)	37	570,549		(39,862		)
CMBS	68,695		(52		)	—		—			14	68,695		(52		)
CLO	41,156		(143		)	15,009		(141		)	3	56,165		(284		)
Single issuer-trust preferred	—		—			—		—			—	—		—
Corporate debt	8,862		(72		)	17,157		(891		)	5	26,019		(963		)
Available-for-sale in an unrealized loss position	$	896,923	$	(17,053	)	$	1,449,949	$	(90,154	)	289	$	2,346,872	$	(107,207	)
Held-to-maturity:
Agency CMO	$	31,749	$	(959	)	$	155,428	$	(8,233	)	26	$	187,177	$	(9,192	)
Agency MBS	757,451		(20,783		)	1,467,605		(89,252		)	274	2,225,056		(110,035		)
Agency CMBS	43,474		(697		)	600,808		(27,525		)	57	644,282		(28,222		)
Municipal bonds and notes	343,560		(11,463		)	216,401		(15,024		)	272	559,961		(26,487		)
CMBS	160,047		(3,256		)	17,152		(490		)	21	177,199		(3,746		)
Held-to-maturity in an unrealized loss position	$	1,336,281	$	(37,158	)	$	2,457,394	$	(140,524	)	650	$	3,793,675	$	(177,682	)

	At December 31, 2017
	Less Than Twelve Months					Twelve Months or Longer					Total
(Dollars in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			# of Holdings	Fair Value		Unrealized Losses
Available-for-sale:
U.S. Treasury Bills	$	—	$	—		$	—	$	—		—	$	—	$	—
Agency CMO	81,001		(449		)	119,104		(3,365		)	27	200,105		(3,814		)
Agency MBS	416,995		(2,920		)	606,021		(16,350		)	135	1,023,016		(19,270		)
Agency CMBS	54,182		(851		)	533,844		(19,399		)	36	588,026		(20,250		)
CMBS	23,869		(74		)	—		—			6	23,869		(74		)
CLO	56,335		(134		)	—		—			3	56,335		(134		)
Single issuer-trust preferred	7,050		(46		)	—		—			1	7,050		(46		)
Corporate debt	11,082		(395		)	6,265		(284		)	4	17,347		(679		)
Available-for-sale in an unrealized loss position	$	650,514	$	(4,869	)	$	1,265,234	$	(39,398	)	212	$	1,915,748	$	(44,267	)
Held-to-maturity:
Agency CMO	$	98,090	$	(1,082	)	$	106,775	$	(3,742	)	22	$	204,865	$	(4,824	)
Agency MBS	762,107		(4,555		)	1,197,839		(32,887		)	205	1,959,946		(37,442		)
Agency CMBS	576,770		(7,599		)	109,785		(2,412		)	56	686,555		(10,011		)
Municipal bonds and notes	6,432		(38		)	226,861		(6,520		)	92	233,293		(6,558		)
CMBS	92,670		(413		)	14,115		(207		)	13	106,785		(620		)
Held-to-maturity in an unrealized loss position	$	1,536,069	$	(13,687	)	$	1,655,375	$	(45,768	)	388	$	3,191,444	$	(59,455	)

Summary of Debt Securities by Contractual Maturity

The amortized cost and fair value of debt securities by contractual maturity are set forth below:

	At September 30, 2018
	Available-for-Sale				Held-to-Maturity
(In thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in one year or less	$	29,730	$	29,750	$	6,352	$	6,378
Due after one year through five years	31,012		31,092		4,244		4,272
Due after five through ten years	276,583		276,143		40,016		39,933
Due after ten years	2,591,702		2,486,968		4,281,846		4,113,776
Total debt securities	$	2,929,027	$	2,823,953	$	4,332,458	$	4,164,359

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Loans and Leases (Tables)

9 Months Ended

Sep. 30, 2018

Loans and Leases Receivable Disclosure [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

The following table summarizes loans and leases:

(In thousands)	At September 30, 2018		At December 31, 2017
Residential	$	4,415,063	$	4,490,878
Consumer	2,441,181		2,590,225
Commercial	6,174,396		5,368,694
Commercial Real Estate	4,771,325		4,523,828
Equipment Financing	519,054		550,233
Loans and leases (1) (2)	$	18,321,019	$	17,523,858

(1) Loans and leases include net deferred fees and net premiums/discounts of $13.6 million and $20.6 million at September 30, 2018 and December 31, 2017, respectively.

(2)

At September 30, 2018 the Company had pledged $7.1 billion of eligible residential, consumer, and commercial loans as collateral to support borrowing capacity at the Federal Home Loan Bank (FHLB) of Boston and the Federal Reserve Bank (FRB) of Boston.

Past Due Financing Receivables

The following tables summarize the aging of loans and leases:

	At September 30, 2018
(In thousands)	30-59 Days Past Due and Accruing		60-89 Days Past Due and Accruing		90 or More Days Past Due and Accruing		Non-accrual		Total Past Due and Non-accrual		Current		Total Loans and Leases
Residential	$	9,023	$	5,510	$	—	$	49,469	$	64,002	$	4,351,061	$	4,415,063
Consumer:
Home equity	9,519		3,442		—		35,174		48,135		2,165,340		2,213,475
Other consumer	1,819		898		—		1,490		4,207		223,499		227,706
Commercial:
Commercial non-mortgage	659		543		147		55,040		56,389		5,148,962		5,205,351
Asset-based	—		—		—		1,029		1,029		968,016		969,045
Commercial real estate:
Commercial real estate	2,715		35		—		7,254		10,004		4,564,320		4,574,324
Commercial construction	—		—		—		—		—		197,001		197,001
Equipment financing	1,371		3,617		—		3,339		8,327		510,727		519,054
Total	$	25,106	$	14,045	$	147	$	152,795	$	192,093	$	18,128,926	$	18,321,019

	At December 31, 2017
(In thousands)	30-59 Days Past Due and Accruing		60-89 Days Past Due and Accruing		90 or More Days Past Due and Accruing		Non-accrual		Total Past Due and Non-accrual		Current		Total Loans and Leases
Residential	$	8,643	$	5,146	$	—	$	44,481	$	58,270	$	4,432,608	$	4,490,878
Consumer:
Home equity	12,668		5,770		—		35,645		54,083		2,298,185		2,352,268
Other consumer	2,556		1,444		—		1,707		5,707		232,250		237,957
Commercial:
Commercial non-mortgage	5,212		603		644		39,214		45,673		4,488,242		4,533,915
Asset-based	—		—		—		589		589		834,190		834,779
Commercial real estate:
Commercial real estate	478		77		248		4,484		5,287		4,238,987		4,244,274
Commercial construction	—		—		—		—		—		279,554		279,554
Equipment financing	1,732		626		—		393		2,751		547,482		550,233
Total	$	31,289	$	13,666	$	892	$	126,513	$	172,360	$	17,351,498	$	17,523,858

Activity In Allowance For Losses

The following tables summarize the activity in, as well as the loan and lease balances that were evaluated for, the allowance for loan and lease losses (ALLL):

	At or for the three months ended September 30, 2018
	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	19,007		$	31,759		$	95,340		$	55,833		$	5,383		$	207,322
Provision (benefit) charged to expense	407			474			5,686			4,146			(213		)	10,500
Charge-offs	(874		)	(4,863		)	(740		)	(1,922		)	(136		)	(8,535		)
Recoveries	133			1,827			431			143			11			2,545
Balance, end of period	$	18,673		$	29,197		$	100,717		$	58,200		$	5,045		$	211,832

	At or for the three months ended September 30, 2017
(In thousands)	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	18,427		$	42,488		$	79,964		$	52,402		$	6,297		$	199,578
(Benefit) provision charged to expense	(348		)	(41		)	12,166			(2,129		)	502			10,150
Charge-offs	(585		)	(6,197		)	(3,002		)	(749		)	(121		)	(10,654		)
Recoveries	280			1,894			466			10			79			2,729
Balance, end of period	$	17,774		$	38,144		$	89,594		$	49,534		$	6,757		$	201,803

	At or for the nine months ended September 30, 2018
(In thousands)	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	19,058		$	36,190		$	89,533		$	49,407		$	5,806		$	199,994
Provision (benefit) charged to expense	1,316			2,967			17,596			10,678			(557		)	32,000
Charge-offs	(2,545		)	(14,844		)	(7,869		)	(2,039		)	(246		)	(27,543		)
Recoveries	844			4,884			1,457			154			42			7,381
Balance, end of period	$	18,673		$	29,197		$	100,717		$	58,200		$	5,045		$	211,832
Individually evaluated for impairment	$	4,319		$	1,428		$	10,491		$	1,544		$	15		$	17,797
Collectively evaluated for impairment	$	14,354		$	27,769		$	90,226		$	56,656		$	5,030		$	194,035
Loan and lease balances:
Individually evaluated for impairment	$	105,600		$	39,808		$	104,353		$	9,767		$	6,489		$	266,017
Collectively evaluated for impairment	4,309,463			2,401,373			6,070,043			4,761,558			512,565			18,055,002
Loans and leases	$	4,415,063		$	2,441,181		$	6,174,396		$	4,771,325		$	519,054		$	18,321,019

	At or for the nine months ended September 30, 2017
(In thousands)	Residential			Consumer			Commercial			Commercial Real Estate			Equipment Financing			Total
ALLL:
Balance, beginning of period	$	23,226		$	45,233		$	71,905		$	47,477		$	6,479		$	194,320
(Benefit) provision charged to expense	(4,436		)	6,847			21,905			2,987			597			27,900
Charge-offs	(1,940		)	(18,273		)	(5,321		)	(951		)	(425		)	(26,910		)
Recoveries	924			4,337			1,105			21			106			6,493
Balance, end of period	$	17,774		$	38,144		$	89,594		$	49,534		$	6,757		$	201,803
Individually evaluated for impairment	$	4,925		$	1,689		$	10,844		$	290		$	38		$	17,786
Collectively evaluated for impairment	$	12,849		$	36,455		$	78,750		$	49,244		$	6,719		$	184,017
Loan and lease balances:
Individually evaluated for impairment	$	116,706		$	46,224		$	85,385		$	18,199		$	3,642		$	270,156
Collectively evaluated for impairment	4,382,735			2,520,759			5,262,918			4,446,718			563,135			17,176,265
Loans and leases	$	4,499,441		$	2,566,983		$	5,348,303		$	4,464,917		$	566,777		$	17,446,421

Impaired Loans

The following tables summarize impaired loans and leases:

	At September 30, 2018
(In thousands)	Unpaid Principal Balance		Total Recorded Investment		Recorded Investment No Allowance		Recorded Investment With Allowance		Related Valuation Allowance
Residential	$	115,959	$	105,600	$	66,484	$	39,116	$	4,319
Consumer - home equity	45,299		39,808		30,924		8,884		1,428
Commercial :
Commercial non-mortgage	117,223		103,324		65,968		37,356		10,491
Asset-based	1,074		1,029		1,029		—		—
Commercial real estate	12,239		9,767		2,561		7,206		1,544
Equipment financing	6,536		6,489		6,164		325		15
Total	$	298,330	$	266,017	$	173,130	$	92,887	$	17,797

	At December 31, 2017
(In thousands)	Unpaid Principal Balance		Total Recorded Investment		Recorded Investment No Allowance		Recorded Investment With Allowance		Related Valuation Allowance
Residential	$	125,352	$	114,295	$	69,759	$	44,536	$	4,805
Consumer - home equity	50,809		45,436		34,418		11,018		1,668
Commercial :
Commercial non-mortgage	79,900		71,882		27,313		44,569		9,786
Asset-based	3,272		589		589		—		—
Commercial real estate	11,994		11,226		6,387		4,839		272
Equipment financing	3,409		3,325		2,932		393		23
Total	$	274,736	$	246,753	$	141,398	$	105,355	$	16,554

The following table summarizes the average recorded investment and interest income recognized for impaired loans and leases:

	Three months ended September 30,												Nine months ended September 30,
	2018						2017						2018						2017
(In thousands)	Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income		Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income		Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income		Average Recorded Investment		Accrued Interest Income		Cash Basis Interest Income
Residential	$	107,618	$	923	$	301	$	118,841	$	1,027	$	285	$	109,948	$	2,852	$	819	$	118,065	$	3,133	$	986
Consumer - home equity	40,722		292		238		46,753		341		246		42,622		876		738		45,972		998		808
Commercial:
Commercial non-mortgage	94,618		847		—		81,816		249		—		87,603		2,257		—		64,932		704		—
Asset based	1,095		—		—		4,279		—		—		809		—		—		4,279		—		—
Commercial real estate:
Commercial real estate	11,222		30		—		20,249		96		—		10,497		164		—		20,647		329		—
Commercial construction	—		—		—		828		—		—		—		—		—		831		12		—
Equipment financing	6,337		41		—		4,895		30		—		4,907		112		—		5,031		168		—
Total	$	261,612	$	2,133	$	539	$	277,661	$	1,743	$	531	$	256,386	$	6,261	$	1,557	$	259,757	$	5,344	$	1,794

Financing Receivable Credit Quality Indicators

The following table summarizes commercial, commercial real estate and equipment financing loans and leases segregated by risk rating exposure:

	Commercial				Commercial Real Estate				Equipment Financing
(In thousands)	At September 30, 2018		At December 31, 2017		At September 30, 2018		At December 31, 2017		At September 30, 2018		At December 31, 2017
(1) - (6) Pass	$	5,742,170	$	5,048,162	$	4,561,901	$	4,355,916	$	499,167	$	525,105
(7) Special Mention	188,905		104,594		105,778		62,065		1,574		8,022
(8) Substandard	236,246		206,883		103,646		105,847		18,313		17,106
(9) Doubtful	7,075		9,055		—		—		—		—
Total	$	6,174,396	$	5,368,694	$	4,771,325	$	4,523,828	$	519,054	$	550,233

Troubled Debt Restructurings on Financing Receivables

Troubled Debt Restructurings

The following table summarizes information for troubled debt restructurings (TDRs):

(Dollars in thousands)	At September 30, 2018		At December 31, 2017
Accrual status	$	145,219	$	147,113
Non-accrual status	95,154		74,291
Total recorded investment of TDRs	$	240,373	$	221,404
Specific reserves for TDRs included in the balance of ALLL	$	16,338	$	12,384
Additional funds committed to borrowers in TDR status	2,926		2,736

For the portion of TDRs deemed to be uncollectible, Webster charged off $1.1 million and $0.4 million for the three months ended September 30, 2018 and 2017, respectively, and $6.3 million, and $3.0 million for the nine months ended September 30, 2018 and 2017, respectively.

The following table provides information on the type of concession for loans and leases modified as TDRs:

	Three months ended September 30,						Nine months ended September 30,
	2018			2017			2018			2017
	Number of Loans and Leases	Post- Modification Recorded Investment(1)		Number of Loans and Leases	Post- Modification Recorded Investment(1)		Number of Loans and Leases	Post- Modification Recorded Investment(1)		Number of Loans and Leases	Post- Modification Recorded Investment(1)
(Dollars in thousands)
Residential
Extended Maturity	1	$	20	—	$	—	1	$	20	9	$	1,390
Adjusted Interest Rate	—	—		—	—		—	—		2	335
Maturity/Rate Combined	4	440		4	570		7	716		9	1,416
Other (2)	3	356		6	1,357		16	2,798		32	5,471
Consumer - home equity
Extended Maturity	1	148		2	158		3	341		8	822
Adjusted Interest Rate	—	—		1	247		—	—		1	247
Maturity/Rate Combined	3	170		2	399		6	618		13	3,212
Other (2)	5	258		12	839		30	1,951		55	3,733
Commercial non - mortgage
Extended Maturity	4	537		—	—		7	622		8	813
Maturity/Rate Combined	8	8,185		8	299		10	8,236		13	9,153
Other (2)	8	10,585		—	—		17	39,328		1	4
Commercial real estate
Extended Maturity	—	—		—	—		2	97		—	—
Maturity/Rate Combined	—	—		—	—		1	245		—	—
Other (2)	—	—		—	—		1	5,111		—	—
Total TDRs	37	$	20,699	35	$	3,869	101	$	60,083	151	$	26,596

(1) Post-modification balances approximate pre-modification balances. The aggregate amount of charge-offs as a result of the restructurings was not significant.

(2) Other includes covenant modifications, forbearance, loans discharged under Chapter 7 bankruptcy, or other concessions.

Loans and leases modified as TDRs within the previous 12 months and for which there was a payment default, consisted of 1 residential loan with an recorded investment of $241 thousand and 1 residential loan with an recorded investment $248 thousand for the three months ended September 30, 2018 and 2017, respectively, and 2 residential loans with an recorded investment of $261 thousand and 1 residential loan with an recorded investment $248 thousand for the nine months ended September 30, 2018 and 2017, respectively.

The recorded investment of TDRs in commercial, commercial real estate, and equipment financing segregated by risk rating exposure is as follows:

(In thousands)	At September 30, 2018		At December 31, 2017
(1) - (6) Pass	$	12,733	$	8,268
(7) Special Mention	334		355
(8) Substandard	74,822		53,050
(9) Doubtful	7,075		—
Total	$	94,964	$	61,673

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Transfers of Financial Assets (Tables)

9 Months Ended

Sep. 30, 2018

Transfers and Servicing [Abstract]

Schedule Of Reserve For Loan Repurchases Table

The following table provides a summary of activity in the reserve for loan repurchases:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	674		$	843		$	872		$	790
Provision (benefit) charged to expense	18			25			(172		)	78
Repurchased loans and settlements charged off	(10		)	(18		)	(18		)	(18		)
Ending balance	$	682		$	850		$	682		$	850

The following table provides a summary of activity in the reserve for unfunded credit commitments:

	Three months ended September 30,				Nine months ended September 30,
(In thousands)	2018		2017		2018		2017
Beginning balance	$	2,596	$	2,544	$	2,362	$	2,287
Provision charged to expense	28		—		262		257
Ending balance	$	2,624	$	2,544	$	2,624	$	2,544

Transfer of Financial Assets Accounted for as Sales [Table Text Block]

The following table provides information for mortgage banking activities:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Residential mortgage loans held for sale:
Proceeds from sale	$	57,042		$	88,691		$	147,105		$	262,029
Loans sold with servicing rights retained	51,014			79,690			130,740			239,357
Net gain on sale	1,051			1,979			2,732			4,356
Ancillary fees	463			682			1,275			2,091
Fair value option adjustment	(209		)	(240		)	(323		)	1,591

Servicing Asset at Amortized Cost [Table Text Block]

The following table presents the changes in carrying value for mortgage servicing assets:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	23,341		$	24,708		$	25,139		$	24,466
Additions	1,428			2,576			3,878			7,063
Amortization	(2,125		)	(2,144		)	(6,373		)	(6,389		)
Ending balance	$	22,644		$	25,140		$	22,644		$	25,140

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Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

Goodwill and other intangible assets by reportable segment consisted of the following:

	At September 30, 2018							At December 31, 2017
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Goodwill:
Community Banking						$	516,560						$	516,560
HSA Bank						21,813							21,813
Total goodwill						$	538,373						$	538,373
Other intangible assets:
HSA Bank - Core deposits	$	22,000	$	(10,283	)	$	11,717	$	22,000	$	(8,610	)	$	13,390
HSA Bank - Customer relationships	21,000		(5,991		)	15,009		21,000		(4,779		)	16,221
Total other intangible assets	$	43,000	$	(16,274	)	$	26,726	$	43,000	$	(13,389	)	$	29,611

Schedule Of Expected Amortization Expense, Next Four Years

As of September 30, 2018, the remaining estimated aggregate future amortization expense for intangible assets is as follows:

(In thousands)
Remainder of 2018	$	962
2019	3,847
2020	3,847
2021	3,847
2022	3,847
Thereafter	10,376

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Deposits (Tables)

9 Months Ended

Sep. 30, 2018

Banking and Thrift [Abstract]

Deposit Liabilities, Type [Table Text Block]

A summary of deposits by type follows:

(In thousands)	At September 30, 2018		At December 31, 2017
Non-interest-bearing:
Demand	$	4,231,505	$	4,191,496
Interest-bearing:
Health savings accounts	5,599,596		5,038,681
Checking	2,587,679		2,736,952
Money market	2,376,649		2,209,492
Savings	4,106,942		4,348,700
Time deposits	3,095,252		2,468,408
Total interest-bearing	17,766,118		16,802,233
Total deposits	$	21,997,623	$	20,993,729
Time deposits and interest-bearing checking, included in above balances, obtained through brokers	$	938,092	$	898,157
Time deposits, included in above balance, that exceed the FDIC limit	506,955		561,512
Deposit overdrafts reclassified as loan balances	1,761		2,210

Time Deposit Maturities [Table Text Block]

The scheduled maturities of time deposits are as follows:

(In thousands)	At September 30, 2018
Remainder of 2018	$	683,421
2019	1,771,721
2020	437,240
2021	125,265
2022	49,295
Thereafter	28,310
Total time deposits	$	3,095,252

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Borrowings (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Schedule of Repurchase Agreements

The following table summarizes securities sold under agreements to repurchase and other borrowings:

	At September 30, 2018				At December 31, 2017
(In thousands)	Amount		Rate		Amount		Rate
Securities sold under agreements to repurchase (1):
Original maturity of one year or less	$	264,488	0.29	%	$	288,269	0.17	%
Original maturity of greater than one year, non-callable	100,000		2.50		300,000		3.10
Total securities sold under agreements to repurchase	364,488		0.89		588,269		1.66
Fed funds purchased	200,000		2.25		55,000		1.37
Securities sold under agreements to repurchase and other borrowings	$	564,488	1.37		$	643,269	1.64

Federal Home Loan Bank, Advances

The following table provides information for FHLB advances:

	At September 30, 2018				At December 31, 2017
(Dollars in thousands)	Amount		Weighted- Average Contractual Coupon Rate		Amount		Weighted- Average Contractual Coupon Rate
Maturing within 1 year	$	948,731	2.18	%	$	1,150,000	1.48	%
After 1 but within 2 years	259,295		1.79		103,026		1.81
After 2 but within 3 years	75,000		1.51		215,000		1.73
After 3 but within 4 years	150,049		3.27		200,000		2.06		(1)
After 4 but within 5 years	193		1.69		170		—
After 5 years	8,616		2.64		8,909		2.65		(1)
FHLB advances and overall rate	$	1,441,884	2.19		$	1,677,105	1.61		(1)
Aggregate carrying value of assets pledged as collateral	$	6,773,182			$	6,402,066
Remaining borrowing capacity	3,018,052				2,600,624

(1)

Weighted-average contractual coupon rates for December 31, 2017 are presented as revised for these classifications to correct an immaterial error in presentation. The percentages reported in the Company's 2017 Annual Report on Form 10-K were: After 3 but within 4 years - 4.13%; After 5 years - 1.96%; and overall rate - 1.85%.

Schedule of Long-term Debt Instruments

The following table summarizes long-term debt:

(Dollars in thousands)		At September 30, 2018			At December 31, 2017
4.375%	Senior fixed-rate notes due February 15, 2024	$	150,000		$	150,000
Junior subordinated debt Webster Statutory Trust I floating-rate notes due September 17, 2033 (1)		77,320			77,320
Total notes and subordinated debt		227,320			227,320
Discount on senior fixed-rate notes		(638		)	(727		)
Debt issuance cost on senior fixed-rate notes		(725		)	(826		)
Long-term debt		$	225,957		$	225,767

(1)

The interest rate on Webster Statutory Trust I floating-rate notes, which varies quarterly based on 3-month London Interbank Offered Rate plus 2.95%, was 5.28% at September 30, 2018 and 4.55% at December 31, 2017.

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Accumulated Other Comprehensive Loss, Net of Tax (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Loss by Component

The following tables summarize the changes in accumulated other comprehensive loss, net of tax (AOCL) by component:

	Three months ended September 30, 2018												Nine months ended September 30, 2018
(In thousands)	Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total			Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total
Beginning balance	$	(64,617	)	$	(10,814	)	$	(46,505	)	$	(121,936	)	$	(27,947	)	$	(15,016	)	$	(48,568	)	$	(91,531	)
(OCL) OCI before reclassifications	(13,811		)	197			—			(13,614		)	(50,481		)	1,620			—			(48,861		)
Amounts reclassified from AOCL	—			1,438			2,548			3,986			—			4,217			4,611			8,828
Net current-period OCI/(OCL)	(13,811		)	1,635			2,548			(9,628		)	(50,481		)	5,837			4,611			(40,033		)
Ending balance	$	(78,428	)	$	(9,179	)	$	(43,957	)	$	(131,564	)	$	(78,428	)	$	(9,179	)	$	(43,957	)	$	(131,564	)

	Three months ended September 30, 2017												Nine months ended September 30, 2017
(In thousands)	Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total			Securities Available For Sale			Derivative Instruments			Defined Benefit Pension and Other Postretirement Benefit Plans			Total
Beginning balance	$	(14,501	)	$	(15,258	)	$	(42,323	)	$	(72,082	)	$	(15,476	)	$	(17,068	)	$	(44,449	)	$	(76,993	)
OCI/(OCL) before reclassifications	872			(34		)	—			838			1,847			(445		)	—			1,402
Amounts reclassified from AOCL	—			1,145			1,001			2,146			—			3,366			3,127			6,493
Net current-period OCI	872			1,111			1,001			2,984			1,847			2,921			3,127			7,895
Ending balance	$	(13,629	)	$	(14,147	)	$	(41,322	)	$	(69,098	)	$	(13,629	)	$	(14,147	)	$	(41,322	)	$	(69,098	)

Schedule of Accumulated Other Comprehensive Loss

The following tables provide information for the items reclassified from AOCL:

(In thousands)	Three months ended September 30,						Nine months ended September 30,						Associated Line Item in the Condensed Consolidated Statements of Income
AOCL Components	2018			2017			2018			2017
Derivative instruments:
Cash flow hedges	$	(1,932	)	$	(1,810	)	$	(5,664	)	$	(5,316	)	Total interest expense
Tax benefit	494			665			1,447			1,950			Income tax expense
Net of tax	$	(1,438	)	$	(1,145	)	$	(4,217	)	$	(3,366	)
Defined benefit pension and other postretirement benefit plans:
Amortization of net loss	$	(3,431	)	$	(1,587	)	$	(6,209	)	$	(4,959	)	(1)
Tax benefit	883			586			1,598			1,832			Income tax expense
Net of tax	$	(2,548	)	$	(1,001	)	$	(4,611	)	$	(3,127	)

(1) These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost, see Note 14 - Retirement Benefit Plans for further details.

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Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 2018

Regulatory Capital Requirements [Abstract]

Information On The Capital Ratios

The following table provides information on the capital ratios for Webster Financial Corporation and Webster Bank:

	At September 30, 2018
	Actual				Minimum Requirement				Well Capitalized
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
Webster Financial Corporation
CET1 risk-based capital	$	2,215,456	11.23	%	$	887,910	4.5	%	$	1,282,537	6.5	%
Total risk-based capital	2,652,270		13.44		1,578,507		8.0		1,973,133		10.0
Tier 1 risk-based capital	2,360,493		11.96		1,183,880		6.0		1,578,507		8.0
Tier 1 leverage capital	2,360,493		8.89		1,061,977		4.0		1,327,471		5.0
Webster Bank
CET1 risk-based capital	$	2,137,249	10.84	%	$	887,232	4.5	%	$	1,281,558	6.5	%
Total risk-based capital	2,351,706		11.93		1,577,302		8.0		1,971,628		10.0
Tier 1 risk-based capital	2,137,249		10.84		1,182,977		6.0		1,577,302		8.0
Tier 1 leverage capital	2,137,249		8.05		1,061,427		4.0		1,326,784		5.0

	At December 31, 2017
	Actual				Minimum Requirement				Well Capitalized
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
Webster Financial Corporation
CET1 risk-based capital	$	2,093,116	11.14	%	$	845,389	4.5	%	$	1,221,118	6.5	%
Total risk-based capital	2,517,848		13.40		1,502,914		8.0		1,878,643		10.0
Tier 1 risk-based capital	2,238,172		11.91		1,127,186		6.0		1,502,914		8.0
Tier 1 leverage capital	2,238,172		8.63		1,036,817		4.0		1,296,021		5.0
Webster Bank
CET1 risk-based capital	$	2,114,224	11.26	%	$	844,693	4.5	%	$	1,220,113	6.5	%
Total risk-based capital	2,316,580		12.34		1,501,677		8.0		1,877,097		10.0
Tier 1 risk-based capital	2,114,224		11.26		1,126,258		6.0		1,501,677		8.0
Tier 1 leverage capital	2,114,224		8.14		1,038,442		4.0		1,298,052		5.0

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Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Earnings Per Share Basic And Diluted

Reconciliation of the calculation of basic and diluted earnings per common share follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2018		2017		2018		2017
Earnings for basic and diluted earnings per common share:
Net income	$	99,673	$	64,496	$	261,580	$	185,546
Less: Preferred stock dividends	1,968		2,024		5,884		6,072
Net income available to common shareholders	97,705		62,472		255,696		179,474
Less: Earnings applicable to participating securities	245		46		656		212
Earnings applicable to common shareholders	$	97,460	$	62,426	$	255,040	$	179,262
Shares:
Weighted-average common shares outstanding - basic	91,959		92,125		91,912		92,003
Effect of dilutive securities:
Stock options and restricted stock	243		372		303		403
Warrants	6		6		6		6
Weighted-average common shares outstanding - diluted	92,208		92,503		92,221		92,412
Earnings per common share:
Basic	$	1.06	$	0.68	$	2.77	$	1.95
Diluted	1.06		0.67		2.77		1.94

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Potential common shares from non-participating restricted stock, of 97 thousand and 80 thousand for the three months ended September 30, 2018 and 2017, respectively, and 54 thousand and 61 thousand for the nine months ended September 30, 2018 and 2017, respectively, are excluded from the effect of dilutive securities because, due to performance conditions, they would have been anti-dilutive.

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Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Value Of Derivative Financial Instruments Designated As Cash Flow Hedges

The following table presents the notional amounts and fair value of derivative positions:

	At September 30, 2018								At December 31, 2017
	Asset Derivatives				Liability Derivatives				Asset Derivatives				Liability Derivatives
(In thousands)	Notional Amounts		Fair Value		Notional Amounts		Fair Value		Notional Amounts		Fair Value		Notional Amounts		Fair Value
Designated as cash flow hedging instruments:
Positions subject to a master netting agreement (1)
Interest rate derivatives (2)	$	325,000	$	4,951	$	—	$	—	$	325,000	$	2,770	$	—	$	—
Not designated as hedging instruments:
Positions subject to a master netting agreement (1)
Interest rate derivatives (2)	3,852,438		13,226		76,789		215		2,791,760		5,977		721,048		1,968
Mortgage banking derivatives (3)	52,067		223		3,063		7		28,497		421		39,230		110
Other	24,879		199		23,927		435		7,914		258		30,328		419
Positions not subject to a master netting agreement (4)
Interest rate derivatives	677,679		3,090		3,242,821		83,142		1,366,299		23,009		2,146,518		25,631
RPAs	84,702		19		100,294		43		93,713		80		116,882		111
Other	6,918		300		2,517		47		—		—		2,073		184
Total not designated as hedging instruments	4,698,683		17,057		3,449,411		83,889		4,288,183		29,745		3,056,079		28,423
Gross derivative instruments, before netting	$	5,023,683	22,008		$	3,449,411	83,889		$	4,613,183	32,515		$	3,056,079	28,423
Less: Legally enforceable master netting agreements			586				586				2,245				2,245
Less: Cash collateral posted			17,709				—				6,704				—
Total derivative instruments, after netting			$	3,713			$	83,303			$	23,566			$	26,178

(1) The Company has elected to report derivative positions subject to a legally enforceable master netting agreement on a net basis, net of cash collateral. Refer to the Offsetting Derivatives section of this footnote for additional information.

(2) Balances related to CME are presented as a single unit of account. Notional amounts of interest rate swaps cleared through CME include; $2.7 billion and $1.9 billion for asset derivatives and $47 million and $595 million for liability derivatives at September 30, 2018 and December 31, 2017, respectively, with related fair values of approximately zero.

(3)

Notional amounts include mandatory forward commitments of $33.0 million, while notional amounts do not include approved floating rate commitments of $9.1 million, at September 30, 2018.

Other Derivatives Not Designated For Hedge Accounting

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Designated as cash flow hedging instruments:
Interest rate derivatives (1)	$	1,667		$	1,928		$	5,158		$	5,953
Not designated as hedging instruments:
Interest rate derivatives (2)	$	1,623		$	2,955		$	7,372		$	5,850
RPAs	22			51			117			157
Mortgage banking derivatives	(26		)	(219		)	(95		)	(1,886		)
Other (2)	(226		)	(756		)	1,113			(1,748		)
Total not designated as hedging instruments (2) (3)	$	1,393		$	2,031		$	8,507		$	2,373

Offsetting Liabilities

The following table presents the transition from a gross basis to net basis, due to the application of counterparty netting agreements:

	At September 30, 2018								At December 31, 2017
(In thousands)	Gross Amount		Relationship Offset		Cash Collateral Offset		Net Amount		Gross Amount		Relationship Offset		Cash Collateral Offset		Net Amount
Derivative instrument gains:
Hedge accounting	$	4,951	$	—	$	4,951	$	—	$	2,770	$	91	$	2,679	$	—
Non-hedge accounting	13,425		586		12,758		81		6,222		2,154		4,025		43
Total assets	$	18,376	$	586	$	17,709	$	81	$	8,992	$	2,245	$	6,704	$	43
Derivative instrument losses:
Hedge accounting	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Non-hedge accounting	651		586		—		65		2,387		2,245		—		142
Total liabilities	$	651	$	586	$	—	$	65	$	2,387	$	2,245	$	—	$	142

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Option, Disclosures

The following table presents the fair value, unpaid principal balance, and accrual status, of assets accounted for under the fair value option:

	At September 30, 2018							At December 31, 2017
(In thousands)	Fair Value		Unpaid Principal Balance		Difference			Fair Value		Unpaid Principal Balance		Difference
Originated loans held for sale	$	17,137	$	17,288	$	(151	)	$	20,888	$	20,346	$	542

Electing to measure originated loans held for sale at fair value reduces certain timing differences and better matches changes in the value of these assets with changes in the value of the derivatives used as an economic hedge on these assets.

Fair Value Of Assets And Liabilities Measured On Recurring Basis

Summaries of the fair values of assets and liabilities measured at fair value on a recurring basis are as follows:

	At September 30, 2018
(In thousands)	Level 1		Level 2		Level 3		NAV		Total
Financial assets held at fair value:
U.S. Treasury Bills	$	9,214	$	—	$	—	$	—	$	9,214
Agency CMO	—		246,466		—		—		246,466
Agency MBS	—		1,409,731		—		—		1,409,731
Agency CMBS	—		570,549		—		—		570,549
CMBS	—		404,902		—		—		404,902
CLO	—		127,661		—		—		127,661
Single issuer-trust preferred	—		—		—		—		—
Corporate debt	—		55,430		—		—		55,430
Total available-for-sale investment securities	9,214		2,814,739		—		—		2,823,953
Gross derivative instruments, before netting (1)	498		21,510		—		—		22,008
Originated loans held for sale	—		17,137		—		—		17,137
Investments held in Rabbi Trust	4,930		—		—		—		4,930
Alternative investments	—		—		—		2,073		2,073
Total financial assets held at fair value	$	14,642	$	2,853,386	$	—	$	2,073	$	2,870,101
Financial liabilities held at fair value:
Gross derivative instruments, before netting (1)	$	462	$	83,427	$	—	$	—	$	83,889

	At December 31, 2017
(In thousands)	Level 1		Level 2		Level 3		NAV		Total
Financial assets held at fair value:
U.S. Treasury Bills	$	1,247	$	—	$	—	$	—	$	1,247
Agency CMO	—		306,333		—		—		306,333
Agency MBS	—		1,107,841		—		—		1,107,841
Agency CMBS	—		588,026		—		—		588,026
CMBS	—		361,067		—		—		361,067
CLO	—		209,851		—		—		209,851
Single issuer-trust preferred	—		7,050		—		—		7,050
Corporate debt	—		56,622		—		—		56,622
Total available-for-sale investment securities	1,247		2,636,790		—		—		2,638,037
Gross derivative instruments, before netting (1)	258		32,257		—		—		32,515
Originated loans held for sale	—		20,888		—		—		20,888
Investments held in Rabbi Trust	4,801		—		—		—		4,801
Alternative investments	—		—		—		3,495		3,495
Total financial assets held at fair value	$	6,306	$	2,689,935	$	—	$	3,495	$	2,699,736
Financial liabilities held at fair value:
Gross derivative instruments, before netting (1)	$	587	$	27,836	$	—	$	—	$	28,423

(1)

For information relating to the impact of netting derivative assets and derivative liabilities as well as the impact from offsetting cash collateral paid to the same derivative counterparties see Note 12:Derivative Financial Instruments.

Schedule Of Valuation Methodology And Unobservable Inputs

assets measured at fair value on a non-recurring basis.

Summary Of Estimated Fair Values Of Significant Financial Instruments

The estimated fair values of selected financial instruments and servicing assets are as follows:

	At September 30, 2018				At December 31, 2017
(In thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Level 2
Held-to-maturity investment securities	$	4,332,458	$	4,164,359	$	4,487,392	$	4,456,350
Level 3
Loans and leases, net	18,109,187		17,913,452		17,323,864		17,211,619
Mortgage servicing assets	22,644		48,661		25,139		45,309
Liabilities:
Level 2
Deposit liabilities	$	18,902,371	$	18,902,371	$	18,525,321	$	18,525,321
Time deposits	3,095,252		3,067,487		2,468,408		2,455,245
Securities sold under agreements to repurchase and other borrowings	564,488		564,396		643,269		644,084
FHLB advances	1,441,884		1,439,155		1,677,105		1,678,070
Long-term debt (1)	225,957		229,336		225,767		234,359

(1)

Adjustments to the carrying amount of long-term debt for unamortized discount and debt issuance cost on senior fixed-rate notes are not included for determination of fair value, see Note 8:Borrowings.

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Retirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2018

Retirement Benefits [Abstract]

Summary of Net Periodic Benefit Cost

The following table summarizes the components of net periodic benefit cost:

	Three months ended September 30,
	2018							2017
(In thousands)	Pension Plan			SERP		Other Benefits		Pension Plan			SERP		Other Benefits
Service cost	$	—		$	—	$	—	$	12		$	—	$	—
Interest cost on benefit obligations	1,857			35		20		1,829			96		19
Expected return on plan assets	(3,178		)	—		—		(3,074		)	—		—
Amortization of prior service cost	—			—		—		—			—		—
Recognized net loss	1,160			2,271		—		1,466			136		(15		)
Net periodic benefit cost	$	(161	)	$	2,306	$	20	$	233		$	232	$	4

	Nine months ended September 30,
	2018							2017
(In thousands)	Pension Plan			SERP		Other Benefits		Pension Plan			SERP		Other Benefits
Service cost	$	—		$	—	$	—	$	37		$	—	$	—
Interest cost on benefit obligations	5,577			201		59		5,486			281		69
Expected return on plan assets	(9,538		)	—		—		(9,222		)	—		—
Amortization of prior service cost	—			—		—		—			—		—
Recognized net loss	3,480			2,729		—		4,398			561		—
Net periodic benefit cost	$	(481	)	$	2,930	$	59	$	699		$	842	$	69

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Share-Based Plans (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Activity

The following table provides a summary of the stock compensation plans activity for the nine months ended September 30, 2018:

	Restricted Stock Awards Outstanding						Stock Options Outstanding
	Time-Based			Performance-Based
	Number of Shares	Weighted-Average Grant Date Fair Value		Number of Shares	Weighted-Average Grant Date Fair Value		Number  of Shares	Weighted-Average Exercise Price
Outstanding, at January 1, 2018	207,800	$	43.16	78,916	$	45.35	673,039	$	18.75
Granted	145,382	58.36		75,707	55.82		—	—
Vested restricted stock awards (1)	129,445	44.80		55,112	46.08		—	—
Forfeited	8,041	52.53		13,847	51.19		—	—
Exercised options	—	—		—	—		180,247	11.71
Outstanding and exercisable, at September 30, 2018	215,696	51.91		85,664	53.19		492,792	21.33

(1)

Vested for purposes of recording compensation expense.

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Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Operating Results And Total Assets Reportable Segments

The following table presents total assets for Webster's reportable segments and the Corporate and Reconciling category:

(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling		Consolidated Total
At September 30, 2018	$	10,327,878	$	71,172	$	8,730,295	$	8,216,972	$	27,346,317
At December 31, 2017	9,350,028		76,308		8,909,671		8,151,638		26,487,645

The following tables present the operating results, including all appropriate allocations, for Webster’s reportable segments and the Corporate and Reconciling category:

	Three months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	91,243	$	36,731	$	101,952	$	446		$	230,372
Provision (benefit) for loan and lease losses	8,207		—		2,293		—			10,500
Net interest income (expense) after provision for loan and lease losses	83,036		36,731		99,659		446			219,872
Non-interest income	18,305		22,159		26,848		4,972			72,284
Non-interest expense	44,506		30,753		95,769		7,755			178,783
Income (loss) before income tax expense	56,835		28,137		30,738		(2,337		)	113,373
Income tax expense (benefit)	13,981		7,316		6,117		(13,714		)	13,700
Net income (loss)	$	42,854	$	20,821	$	24,621	$	11,377		$	99,673

	Three months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking			Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	81,925	$	26,713	$	96,859		$	(4,593	)	$	200,904
Provision (benefit) for loan and lease losses	12,073		—		(1,923		)	—			10,150
Net interest income (expense) after provision for loan and lease losses	69,852		26,713		98,782			(4,593		)	190,754
Non-interest income	13,207		19,371		27,079			6,189			65,846
Non-interest expense	38,339		27,222		92,478			3,784			161,823
Income (loss) before income tax expense	44,720		18,862		33,383			(2,188		)	94,777
Income tax expense (benefit)	14,363		6,006		10,605			(693		)	30,281
Net income (loss)	$	30,357	$	12,856	$	22,778		$	(1,495	)	$	64,496

	Nine months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	264,353	$	104,920	$	302,782	$	(2,505	)	$	669,550
Provision for loan and lease losses	26,300		—		5,700		—			32,000
Net interest income (expense) after provision for loan and lease losses	238,053		104,920		297,082		(2,505		)	637,550
Non-interest income	48,662		67,710		78,421		14,612			209,405
Non-interest expense	128,730		93,488		287,795		20,844			530,857
Income (loss) before income tax expense	157,985		79,142		87,708		(8,737		)	316,098
Income tax expense (benefit)	38,864		20,577		17,454		(22,377		)	54,518
Net income	$	119,121	$	58,565	$	70,254	$	13,640		$	261,580

	Nine months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking			Corporate and Reconciling			Consolidated Total
Net interest income (expense)	$	239,118	$	76,339	$	286,351		$	(10,453	)	$	591,355
Provision (benefit) for loan and lease losses	29,562		—		(1,662		)	—			27,900
Net interest income (expense) after provision for loan and lease losses	209,556		76,339		288,013			(10,453		)	563,455
Non-interest income	39,163		58,392		80,516			15,368			193,439
Non-interest expense	113,767		84,211		281,979			10,069			490,026
Income (loss) before income tax expense	134,952		50,520		86,550			(5,154		)	266,868
Income tax expense (benefit)	41,125		15,395		26,374			(1,572		)	81,322
Net income (loss)	$	93,827	$	35,125	$	60,176		$	(3,582	)	$	185,546

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Revenue from Contracts with Customers Disaggregation of Revenue (Tables)

9 Months Ended

Sep. 30, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

The following tables present the disaggregation by operating segment and major revenue stream, with disaggregated revenue reconciled to segment revenue as presented in Note 16:Segment Reporting:

	Three months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	3,211	$	21,294	$	16,107	$	(11	)	$	40,601
Wealth and investment services	2,577		—		5,843		(8		)	8,412
Other income	—		865		352		—			1,217
Revenue from contracts with customers	5,788		22,159		22,302		(19		)	50,230
Non-interest income within the scope of other GAAP topics	12,517		—		4,546		4,991			22,054
Total non-interest income	$	18,305	$	22,159	$	26,848	$	4,972		$	72,284

	Three months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	3,119	$	18,658	$	16,435	$	109		$	38,321
Wealth and investment services	2,471		—		5,288		(9		)	7,750
Other income	—		713		216		—			929
Revenue from contracts with customers	5,590		19,371		21,939		100			47,000
Non-interest income within the scope of other GAAP topics	7,617		—		5,140		6,089			18,846
Total non-interest income	$	13,207	$	19,371	$	27,079	$	6,189		$	65,846

	Nine months ended September 30, 2018
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	9,613	$	65,112	$	47,079	$	107		$	121,911
Wealth and investment services	7,703		—		17,060		(25		)	24,738
Other income	—		2,598		1,485		—			4,083
Revenue from contracts with customers	17,316		67,710		65,624		82			150,732
Non-interest income within the scope of other GAAP topics	31,346		—		12,797		14,530			58,673
Total non-interest income	$	48,662	$	67,710	$	78,421	$	14,612		$	209,405

	Nine months ended September 30, 2017
(In thousands)	Commercial Banking		HSA Bank		Community Banking		Corporate and Reconciling			Consolidated Total
Major Revenue Streams
Deposit service fees	$	9,012	$	56,176	$	48,046	$	285		$	113,519
Wealth and investment services	7,288		—		15,638		(26		)	22,900
Other income	—		2,216		603		—			2,819
Revenue from contracts with customers	16,300		58,392		64,287		259			139,238
Non-interest income within the scope of other GAAP topics	22,863		—		16,229		15,109			54,201
Total non-interest income	$	39,163	$	58,392	$	80,516	$	15,368		$	193,439

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Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Outstanding Financial Instruments Contract Amounts Represent Credit Risk

The following table summarizes the outstanding amounts of credit-related financial instruments with off-balance sheet risk:

(In thousands)	At September 30, 2018		At December 31, 2017
Commitments to extend credit	$	5,683,275	$	5,567,687
Standby letter of credit	185,859		195,902
Commercial letter of credit	36,393		43,200
Total credit-related financial instruments with off-balance sheet risk	$	5,905,527	$	5,806,789

Reserve For Unfunded Credit Commitments

The following table provides a summary of activity in the reserve for loan repurchases:

	Three months ended September 30,						Nine months ended September 30,
(In thousands)	2018			2017			2018			2017
Beginning balance	$	674		$	843		$	872		$	790
Provision (benefit) charged to expense	18			25			(172		)	78
Repurchased loans and settlements charged off	(10		)	(18		)	(18		)	(18		)
Ending balance	$	682		$	850		$	682		$	850

The following table provides a summary of activity in the reserve for unfunded credit commitments:

	Three months ended September 30,				Nine months ended September 30,
(In thousands)	2018		2017		2018		2017
Beginning balance	$	2,596	$	2,544	$	2,362	$	2,287
Provision charged to expense	28		—		262		257
Ending balance	$	2,624	$	2,544	$	2,624	$	2,544

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Summary of Significant Accounting Policies Change in Accounting Estimate (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Change in Accounting Estimate [Line Items]
Deposit insurance	$ 9,694	$ 6,344		$ 30,098	$ 19,701
Corporate, Non-Segment [Member]
Change in Accounting Estimate [Line Items]
Deposit insurance				10,000
Corporate, Non-Segment [Member] | Regulatory Reviews of Filings [Member]
Change in Accounting Estimate [Line Items]
Deposit insurance			$ 7,200	$ 10,000

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Summary of Significant Accounting Policies New Accounting Pronouncements or Change in Accounting Principle (Details) $ in Millions	Sep. 30, 2018 USD ($)
ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ (2.8)
ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 1.4

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Variable Interest Entities (Variable Interest Entity, Consolidated, Carrying Amount, Assets) (Details) - Variable Interest Entity, Not Primary Beneficiary [Member] - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Other Assets [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets	$ 30.0	$ 33.5
Accounts Payable and Accrued Liabilities [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities	10.7	17.3
Other Investments [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets	16.4	13.8
Unfunded Loan Commitment [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 28.7	$ 22.9

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Investment Securities (Summary Of Investment Securities) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	$ 2,929,027	$ 2,675,131
Unrealized Gains	2,133	7,173
Unrealized Losses	(107,207)	(44,267)
Fair Value	2,823,953	2,638,037
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Amortized Cost	4,332,458	4,487,392
Unrealized Gains	9,583	28,413
Unrealized Losses	(177,682)	(59,455)
Fair Value	4,164,359	4,456,350
US Treasury Bill Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	9,215	1,247
Unrealized Gains	0	0
Unrealized Losses	(1)	0
Fair Value	9,214	1,247
Agency CMO [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	254,549	308,989
Unrealized Gains	79	1,158
Unrealized Losses	(8,162)	(3,814)
Fair Value	246,466	306,333
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Amortized Cost	218,351	260,114
Unrealized Gains	143	664
Unrealized Losses	(9,192)	(4,824)
Fair Value	209,302	255,954
Agency MBS [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	1,466,973	1,124,960
Unrealized Gains	641	2,151
Unrealized Losses	(57,883)	(19,270)
Fair Value	1,409,731	1,107,841
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Amortized Cost	2,535,043	2,569,735
Unrealized Gains	8,256	16,989
Unrealized Losses	(110,035)	(37,442)
Fair Value	2,433,264	2,549,282
Agency CMBS [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	610,411	608,276
Unrealized Gains	0	0
Unrealized Losses	(39,862)	(20,250)
Fair Value	570,549	588,026
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Amortized Cost	672,505	696,566
Unrealized Gains	0	0
Unrealized Losses	(28,222)	(10,011)
Fair Value	644,283	686,555
Non-agency CMBS [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	404,104	358,984
Unrealized Gains	850	2,157
Unrealized Losses	(52)	(74)
Fair Value	404,902	361,067
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Amortized Cost	221,969	249,273
Unrealized Gains	380	2,175
Unrealized Losses	(3,746)	(620)
Fair Value	218,603	250,828
CLO [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	127,743	209,075
Unrealized Gains	202	910
Unrealized Losses	(284)	(134)
Fair Value	127,661	209,851
Single issuer trust preferred securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	0	7,096
Unrealized Gains	0	0
Unrealized Losses	0	(46)
Fair Value	0	7,050
Corporate debt securities [Member]
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	56,032	56,504
Unrealized Gains	361	797
Unrealized Losses	(963)	(679)
Fair Value	55,430	56,622
Municipal bonds and notes [Member]
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Amortized Cost	684,587	711,381
Unrealized Gains	804	8,584
Unrealized Losses	(26,487)	(6,558)
Fair Value	658,904	713,407
Private Label MBS [Member]
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Amortized Cost	3	323
Unrealized Gains	0	1
Unrealized Losses	0	0
Fair Value	$ 3	$ 324

XML

Investment Securities (Other Than Temporary Impairment Credit Losses Recognized In Earnings) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance of OTTI, beginning of period	$ 1,103	$ 3,231	$ 1,364	$ 3,243
Reduction for securities sold, called	(281)	(1,028)	(542)	(1,166)
Balance of OTTI, end of period	822	2,203	822	2,203
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses	$ 0	$ 0	$ 0	$ 126

XML

Investment Securities (Summary Of Gross Unrealized Losses Not Considered OTTI) (Detail) $ in Thousands	Sep. 30, 2018 USD ($) holding	Dec. 31, 2017 USD ($) holding
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 896,923	$ 650,514
Available for sale, Unrealized Losses - Less Than Twelve Months	(17,053)	(4,869)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,449,949	1,265,234
Available for sale, Unrealized Losses - Twelve Months or Longer	$ (90,154)	$ (39,398)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | holding	289	212
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 2,346,872	$ 1,915,748
Available for sale, Unrealized Losses - Total	(107,207)	(44,267)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	1,336,281	1,536,069
Held-to-maturity, Unrealized Losses - Less Than Twelve Months	(37,158)	(13,687)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	2,457,394	1,655,375
Held-to-maturity, Unrealized Losses, Twelve Months or Longer	$ (140,524)	$ (45,768)
Held-to-maturity, Number of Holdings - Total | holding	650	388
Held-to-maturity, Fair Value - Total	$ 3,793,675	$ 3,191,444
Held-to-maturity, Unrealized Losses - Total	(177,682)	(59,455)
US Treasury Bill Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	9,214
Available for sale, Unrealized Losses - Less Than Twelve Months	$ (1)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | holding	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 9,214
Available for sale, Unrealized Losses - Total	(1)
Agency CMO [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	108,055	81,001
Available for sale, Unrealized Losses - Less Than Twelve Months	(2,046)	(449)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	123,570	119,104
Available for sale, Unrealized Losses - Twelve Months or Longer	$ (6,116)	$ (3,365)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | holding	43	27
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 231,625	$ 200,105
Available for sale, Unrealized Losses - Total	(8,162)	(3,814)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	31,749	98,090
Held-to-maturity, Unrealized Losses - Less Than Twelve Months	(959)	(1,082)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	155,428	106,775
Held-to-maturity, Unrealized Losses, Twelve Months or Longer	$ (8,233)	$ (3,742)
Held-to-maturity, Number of Holdings - Total | holding	26	22
Held-to-maturity, Fair Value - Total	$ 187,177	$ 204,865
Held-to-maturity, Unrealized Losses - Total	(9,192)	(4,824)
Agency MBS [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	632,866	416,995
Available for sale, Unrealized Losses - Less Than Twelve Months	(13,665)	(2,920)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	751,739	606,021
Available for sale, Unrealized Losses - Twelve Months or Longer	$ (44,218)	$ (16,350)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | holding	185	135
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 1,384,605	$ 1,023,016
Available for sale, Unrealized Losses - Total	(57,883)	(19,270)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	757,451	762,107
Held-to-maturity, Unrealized Losses - Less Than Twelve Months	(20,783)	(4,555)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	1,467,605	1,197,839
Held-to-maturity, Unrealized Losses, Twelve Months or Longer	$ (89,252)	$ (32,887)
Held-to-maturity, Number of Holdings - Total | holding	274	205
Held-to-maturity, Fair Value - Total	$ 2,225,056	$ 1,959,946
Held-to-maturity, Unrealized Losses - Total	(110,035)	(37,442)
Agency CMBS [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	28,075	54,182
Available for sale, Unrealized Losses - Less Than Twelve Months	(1,074)	(851)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	542,474	533,844
Available for sale, Unrealized Losses - Twelve Months or Longer	$ (38,788)	$ (19,399)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | holding	37	36
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 570,549	$ 588,026
Available for sale, Unrealized Losses - Total	(39,862)	(20,250)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	43,474	576,770
Held-to-maturity, Unrealized Losses - Less Than Twelve Months	(697)	(7,599)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	600,808	109,785
Held-to-maturity, Unrealized Losses, Twelve Months or Longer	$ (27,525)	$ (2,412)
Held-to-maturity, Number of Holdings - Total | holding	57	56
Held-to-maturity, Fair Value - Total	$ 644,282	$ 686,555
Held-to-maturity, Unrealized Losses - Total	(28,222)	(10,011)
Non-agency CMBS [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	68,695	23,869
Available for sale, Unrealized Losses - Less Than Twelve Months	$ (52)	$ (74)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | holding	14	6
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 68,695	$ 23,869
Available for sale, Unrealized Losses - Total	(52)	(74)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	160,047	92,670
Held-to-maturity, Unrealized Losses - Less Than Twelve Months	(3,256)	(413)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	17,152	14,115
Held-to-maturity, Unrealized Losses, Twelve Months or Longer	$ (490)	$ (207)
Held-to-maturity, Number of Holdings - Total | holding	21	13
Held-to-maturity, Fair Value - Total	$ 177,199	$ 106,785
Held-to-maturity, Unrealized Losses - Total	(3,746)	(620)
CLO [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	41,156	56,335
Available for sale, Unrealized Losses - Less Than Twelve Months	(143)	$ (134)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	15,009
Available for sale, Unrealized Losses - Twelve Months or Longer	$ (141)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | holding	3	3
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 56,165	$ 56,335
Available for sale, Unrealized Losses - Total	(284)	(134)
Single issuer trust preferred securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		7,050
Available for sale, Unrealized Losses - Less Than Twelve Months		$ (46)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | holding		1
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		$ 7,050
Available for sale, Unrealized Losses - Total		(46)
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	8,862	11,082
Available for sale, Unrealized Losses - Less Than Twelve Months	(72)	(395)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	17,157	6,265
Available for sale, Unrealized Losses - Twelve Months or Longer	$ (891)	$ (284)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | holding	5	4
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 26,019	$ 17,347
Available for sale, Unrealized Losses - Total	(963)	(679)
Municipal bonds and notes [Member]
Schedule of Investments [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	343,560	6,432
Held-to-maturity, Unrealized Losses - Less Than Twelve Months	(11,463)	(38)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	216,401	226,861
Held-to-maturity, Unrealized Losses, Twelve Months or Longer	$ (15,024)	$ (6,520)
Held-to-maturity, Number of Holdings - Total | holding	272	92
Held-to-maturity, Fair Value - Total	$ 559,961	$ 233,293
Held-to-maturity, Unrealized Losses - Total	$ (26,487)	$ (6,558)

XML

Investment Securities (Summary Of Debt Securities By Contractual Maturity) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract]
Available-for-sale, Amortized Cost - Due in one year or less	$ 29,730
Available-for-sale, Amortized Cost - Due after one year through five years	31,012
Available-for-sale, Amortized Cost - Due after five through ten years	276,583
Available-for-sale, Amortized Cost - Due after ten years	2,591,702
Available-for-sale, Amortized Cost - Total debt securities	2,929,027	$ 2,675,131
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale, Fair Value - Due in one year or less	29,750
Available-for-sale, Fair Value - Due after one year through five years	31,092
Available-for-sale, Fair Value - Due after five through ten years	276,143
Available-for-sale, Fair Value - Due after ten years	2,486,968
Debt Securities, Available-for-sale	2,823,953	2,638,037
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Held-to-maturity, Amortized Cost - Due in one year or less	6,352
Held-to-maturity, Amortized Cost - Due after one year through five years	4,244
Held-to-maturity, Amortized Cost - Due after five through ten years	40,016
Held-to-maturity, Amortized Cost - Due after ten years	4,281,846
Amortized Cost	4,332,458	4,487,392
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Held to maturity, Fair Value - Due in one year or less	6,378
Held-to-maturity, Fair Value - Due after one year through five years	4,272
Held to maturity, Fair Value - Due after five through ten years	39,933
Held to maturity, Fair Value - Due after ten years	4,113,776
Fair Value	$ 4,164,359	$ 4,456,350

XML

Investment Securities Investment Securities (Narrative) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Abstract]
Unrealized Losses	$ (107,207)	$ (44,267)
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Unrealized Losses	(177,682)	(59,455)
Investment securities available-for-sale, at fair value	2,823,953	2,638,037
Pledged Financial Instruments, Not Separately Reported, Securities	2,500,000
Agency CMO [Member]
Debt Securities, Available-for-sale [Abstract]
Unrealized Losses	(8,162)	(3,814)
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Unrealized Losses	(9,192)	(4,824)
Agency MBS [Member]
Debt Securities, Available-for-sale [Abstract]
Unrealized Losses	(57,883)	(19,270)
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Unrealized Losses	(110,035)	(37,442)
Agency CMBS [Member]
Debt Securities, Available-for-sale [Abstract]
Unrealized Losses	(39,862)	(20,250)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		20,300
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Unrealized Losses	(28,222)	(10,011)
Non-agency CMBS [Member]
Debt Securities, Available-for-sale [Abstract]
Unrealized Losses	(52)	(74)
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Unrealized Losses	(3,746)	(620)
CLO [Member]
Debt Securities, Available-for-sale [Abstract]
Unrealized Losses	(284)	(134)
Single issuer trust preferred securities [Member]
Debt Securities, Available-for-sale [Abstract]
Unrealized Losses	0	(46)
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Abstract]
Unrealized Losses	(963)	(679)
Municipal Bonds [Member]
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Unrealized Losses	(26,487)	$ (6,558)
Callable at the option of the counterparty [Member]
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Investment securities available-for-sale, at fair value	$ 1,100,000

XML

Investment Securities (Narrative) (Summary Of Realized Gain (Loss) on Investments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Gain (Loss) on Investments [Line Items]
Proceeds from Sale of Debt Securities, Available-for-sale	$ 0	$ 0	$ 0	$ 0

XML

Loans and Leases (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 18,321,019	$ 17,523,858	$ 17,446,421
Unamortized premiums	13,600	20,600
Pledged Financial Instruments, Not Separately Reported, Loans Receivable Pledged as Collateral	7,100,000
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	4,415,063	4,490,878	4,499,441
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	2,441,181	2,590,225	2,566,983
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	6,174,396	5,368,694	5,348,303
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	4,771,325	4,523,828	4,464,917
Finance Leases Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 519,054	$ 550,233	$ 566,777

XML

Loans and Leases (Summary Of Loan And Lease Portfolio Aging By Class Of Loan) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 192,093	$ 172,360
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	147	892
Financing Receivable, Recorded Investment, Nonaccrual Status	152,795	126,513
Financing Receivable, Recorded Investment, Current	18,128,926	17,351,498
Loans and leases	18,321,019	17,523,858	$ 17,446,421
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	25,106	31,289
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	14,045	13,666
Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	64,002	58,270
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	49,469	44,481
Financing Receivable, Recorded Investment, Current	4,351,061	4,432,608
Loans and leases	4,415,063	4,490,878	4,499,441
Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	9,023	8,643
Residential Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	5,510	5,146
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	2,441,181	2,590,225	2,566,983
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	48,135	54,083
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	35,174	35,645
Financing Receivable, Recorded Investment, Current	2,165,340	2,298,185
Loans and leases	2,213,475	2,352,268
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	9,519	12,668
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3,442	5,770
Consumer Portfolio Segment [Member] | Consumer Borrower [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,207	5,707
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	1,490	1,707
Financing Receivable, Recorded Investment, Current	223,499	232,250
Loans and leases	227,706	237,957
Consumer Portfolio Segment [Member] | Consumer Borrower [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,819	2,556
Consumer Portfolio Segment [Member] | Consumer Borrower [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	898	1,444
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	6,174,396	5,368,694	5,348,303
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	56,389	45,673
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	147	644
Financing Receivable, Recorded Investment, Nonaccrual Status	55,040	39,214
Financing Receivable, Recorded Investment, Current	5,148,962	4,488,242
Loans and leases	5,205,351	4,533,915
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	659	5,212
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	543	603
Commercial Portfolio Segment [Member] | Asset Based Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,029	589
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	1,029	589
Financing Receivable, Recorded Investment, Current	968,016	834,190
Loans and leases	969,045	834,779
Commercial Portfolio Segment [Member] | Asset Based Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Commercial Portfolio Segment [Member] | Asset Based Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and leases	4,771,325	4,523,828	4,464,917
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Financing Receivable, Recorded Investment, Current	197,001	279,554
Loans and leases	197,001	279,554
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	10,004	5,287
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	248
Financing Receivable, Recorded Investment, Nonaccrual Status	7,254	4,484
Financing Receivable, Recorded Investment, Current	4,564,320	4,238,987
Loans and leases	4,574,324	4,244,274
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	2,715	478
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	35	77
Finance Leases Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	8,327	2,751
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	3,339	393
Financing Receivable, Recorded Investment, Current	510,727	547,482
Loans and leases	519,054	550,233	$ 566,777
Finance Leases Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,371	1,732
Finance Leases Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 3,617	$ 626

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Loans and Leases (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Loans and Leases Receivable Disclosure [Abstract]
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	$ 4.3	$ 2.8	$ 7.9	$ 6.4
Write-down of TDR's	$ (1.1)	$ (0.4)	$ (6.3)	$ (3.0)

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Loans and Leases (Allowance For Loan And Lease Losses By Portfolio Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	$ 1,100	$ 400	$ 6,300	$ 3,000
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	207,322	199,578	199,994	194,320
Provision (benefit) charged to expense	10,500	10,150	32,000	27,900
Charge-offs	(8,535)	(10,654)	(27,543)	(26,910)
Recoveries	2,545	2,729	7,381	6,493
Balance, end of period	207,322	199,578	199,994	194,320	$ 211,832	$ 199,994	$ 201,803
ALLL, Individually evaluated for impairment					17,797		17,786
ALLL, Collectively evaluated for impairment					194,035		184,017
Loan and lease balances, Individually evaluated for impairment					266,017		270,156
Loan and lease balances, Collectively evaluated for impairment					18,055,002		17,176,265
Loans and leases					18,321,019	17,523,858	17,446,421
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	19,007	18,427	19,058	23,226
Provision (benefit) charged to expense	407	(348)	1,316	(4,436)
Charge-offs	(874)	(585)	(2,545)	(1,940)
Recoveries	133	280	844	924
Balance, end of period	19,007	18,427	19,058	23,226	18,673	19,058	17,774
ALLL, Individually evaluated for impairment					4,319		4,925
ALLL, Collectively evaluated for impairment					14,354		12,849
Loan and lease balances, Individually evaluated for impairment					105,600		116,706
Loan and lease balances, Collectively evaluated for impairment					4,309,463		4,382,735
Loans and leases					4,415,063	4,490,878	4,499,441
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	31,759	42,488	36,190	45,233
Provision (benefit) charged to expense	474	(41)	2,967	6,847
Charge-offs	(4,863)	(6,197)	(14,844)	(18,273)
Recoveries	1,827	1,894	4,884	4,337
Balance, end of period	31,759	42,488	36,190	45,233	29,197	36,190	38,144
ALLL, Individually evaluated for impairment					1,428		1,689
ALLL, Collectively evaluated for impairment					27,769		36,455
Loan and lease balances, Individually evaluated for impairment					39,808		46,224
Loan and lease balances, Collectively evaluated for impairment					2,401,373		2,520,759
Loans and leases					2,441,181	2,590,225	2,566,983
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	95,340	79,964	89,533	71,905
Provision (benefit) charged to expense	5,686	12,166	17,596	21,905
Charge-offs	(740)	(3,002)	(7,869)	(5,321)
Recoveries	431	466	1,457	1,105
Balance, end of period	95,340	79,964	89,533	71,905	100,717	89,533	89,594
ALLL, Individually evaluated for impairment					10,491		10,844
ALLL, Collectively evaluated for impairment					90,226		78,750
Loan and lease balances, Individually evaluated for impairment					104,353		85,385
Loan and lease balances, Collectively evaluated for impairment					6,070,043		5,262,918
Loans and leases					6,174,396	5,368,694	5,348,303
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	55,833	52,402	49,407	47,477
Provision (benefit) charged to expense	4,146	(2,129)	10,678	2,987
Charge-offs	(1,922)	(749)	(2,039)	(951)
Recoveries	143	10	154	21
Balance, end of period	55,833	52,402	49,407	47,477	58,200	49,407	49,534
ALLL, Individually evaluated for impairment					1,544		290
ALLL, Collectively evaluated for impairment					56,656		49,244
Loan and lease balances, Individually evaluated for impairment					9,767		18,199
Loan and lease balances, Collectively evaluated for impairment					4,761,558		4,446,718
Loans and leases					4,771,325	4,523,828	4,464,917
Finance Leases Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	5,383	6,297	5,806	6,479
Provision (benefit) charged to expense	(213)	502	(557)	597
Charge-offs	(136)	(121)	(246)	(425)
Recoveries	11	79	42	106
Balance, end of period	$ 5,383	$ 6,297	$ 5,806	$ 6,479	5,045	5,806	6,757
ALLL, Individually evaluated for impairment					15		38
ALLL, Collectively evaluated for impairment					5,030		6,719
Loan and lease balances, Individually evaluated for impairment					6,489		3,642
Loan and lease balances, Collectively evaluated for impairment					512,565		563,135
Loans and leases					$ 519,054	$ 550,233	$ 566,777

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Loans and Leases (Impaired Loans And Leases By Class) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 298,330	$ 274,736
Total Recorded Investment	266,017	246,753
Recorded Investment No Allowance	173,130	141,398
Recorded Investment With Allowance	92,887	105,355
Related Valuation Allowance	17,797	16,554
Residential Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	115,959	125,352
Total Recorded Investment	105,600	114,295
Recorded Investment No Allowance	66,484	69,759
Recorded Investment With Allowance	39,116	44,536
Related Valuation Allowance	4,319	4,805
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance		50,809
Total Recorded Investment		45,436
Recorded Investment No Allowance		34,418
Recorded Investment With Allowance		11,018
Related Valuation Allowance		1,668
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	45,299
Total Recorded Investment	39,808
Recorded Investment No Allowance	30,924
Recorded Investment With Allowance	8,884
Related Valuation Allowance	1,428
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	117,223	79,900
Total Recorded Investment	103,324	71,882
Recorded Investment No Allowance	65,968	27,313
Recorded Investment With Allowance	37,356	44,569
Related Valuation Allowance	10,491	9,786
Commercial Portfolio Segment [Member] | Asset Based Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,074	3,272
Total Recorded Investment	1,029	589
Recorded Investment No Allowance	1,029	589
Recorded Investment With Allowance	0	0
Related Valuation Allowance	0	0
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	12,239	11,994
Total Recorded Investment	9,767	11,226
Recorded Investment No Allowance	2,561	6,387
Recorded Investment With Allowance	7,206	4,839
Related Valuation Allowance	1,544	272
Finance Leases Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	6,536	3,409
Total Recorded Investment	6,489	3,325
Recorded Investment No Allowance	6,164	2,932
Recorded Investment With Allowance	325	393
Related Valuation Allowance	$ 15	$ 23

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Loans and Leases (Interest Income From Impaired Loans And Leases, By Class) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 261,612	$ 277,661	$ 256,386	$ 259,757
Accrued Interest Income	2,133	1,743	6,261	5,344
Cash Basis Interest Income	539	531	1,557	1,794
Residential Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	107,618	118,841	109,948	118,065
Accrued Interest Income	923	1,027	2,852	3,133
Cash Basis Interest Income	301	285	819	986
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	40,722	46,753	42,622	45,972
Accrued Interest Income	292	341	876	998
Cash Basis Interest Income	238	246	738	808
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	94,618	81,816	87,603	64,932
Accrued Interest Income	847	249	2,257	704
Cash Basis Interest Income	0	0	0	0
Commercial Portfolio Segment [Member] | Asset Based Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	1,095	4,279	809	4,279
Accrued Interest Income	0	0	0	0
Cash Basis Interest Income	0	0	0	0
Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	11,222	20,249	10,497	20,647
Accrued Interest Income	30	96	164	329
Cash Basis Interest Income	0	0	0	0
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	0	828	0	831
Accrued Interest Income	0	0	0	12
Cash Basis Interest Income	0	0	0	0
Finance Leases Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	6,337	4,895	4,907	5,031
Accrued Interest Income	41	30	112	168
Cash Basis Interest Income	$ 0	$ 0	$ 0	$ 0

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Loans and Leases (Commercial, Commercial Real Estate Loans And Equipment Financing Loans Segregated By Risk Rating Exposure) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	$ 18,321,019	$ 17,523,858	$ 17,446,421
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	6,174,396	5,368,694	5,348,303
Commercial Portfolio Segment [Member] | (1) - (6) Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	5,742,170	5,048,162
Commercial Portfolio Segment [Member] | (7) Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	188,905	104,594
Commercial Portfolio Segment [Member] | (8) Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	236,246	206,883
Commercial Portfolio Segment [Member] | (9) Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	7,075	9,055
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	4,771,325	4,523,828	4,464,917
Commercial Real Estate Portfolio Segment [Member] | (1) - (6) Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	4,561,901	4,355,916
Commercial Real Estate Portfolio Segment [Member] | (7) Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	105,778	62,065
Commercial Real Estate Portfolio Segment [Member] | (8) Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	103,646	105,847
Commercial Real Estate Portfolio Segment [Member] | (9) Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	0	0
Finance Leases Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	519,054	550,233	$ 566,777
Finance Leases Portfolio Segment [Member] | (1) - (6) Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	499,167	525,105
Finance Leases Portfolio Segment [Member] | (7) Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	1,574	8,022
Finance Leases Portfolio Segment [Member] | (8) Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	18,313	17,106
Finance Leases Portfolio Segment [Member] | (9) Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases	$ 0	$ 0

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Loans and Leases (Summary Of The Recorded Investment Of Company's TDRs) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Total recorded investment of TDRs	$ 240,373		$ 221,404
Specific reserves for TDRs included in the balance of ALLL	211,832	$ 207,322	199,994	$ 201,803	$ 199,578	$ 194,320
Additional funds committed to borrowers in TDR status	2,926		2,736
Performing Financial Instruments [Member]
Financing Receivable, Modifications [Line Items]
Total recorded investment of TDRs	145,219		147,113
Nonperforming Financial Instruments [Member]
Financing Receivable, Modifications [Line Items]
Total recorded investment of TDRs	95,154		74,291
Nonperforming Financial Instruments [Member] | Troubled Debt Restructures [Member]
Financing Receivable, Modifications [Line Items]
Specific reserves for TDRs included in the balance of ALLL	$ 16,338		$ 12,384

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Loans and Leases (Information on How Loans and Leases were Modified as a TDR) (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) loan	Sep. 30, 2017 USD ($) loan	Sep. 30, 2018 USD ($) loan	Sep. 30, 2017 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	37	35	101	151
Post-Modification Recorded Investment | $	$ 20,699	$ 3,869	$ 60,083	$ 26,596
Home Equity Loan [Member] | Contractual Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	0	1
Post-Modification Recorded Investment | $	$ 0	$ 247
Residential Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	1	0	1	9
Post-Modification Recorded Investment | $	$ 20	$ 0	$ 20	$ 1,390
Residential Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	0	0	0	2
Post-Modification Recorded Investment | $	$ 0	$ 0	$ 0	$ 335
Residential Portfolio Segment [Member] | Maturity/Rate Combined [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	4	4	7	9
Post-Modification Recorded Investment | $	$ 440	$ 570	$ 716	$ 1,416
Residential Portfolio Segment [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	3	6	16	32
Post-Modification Recorded Investment | $	$ 356	$ 1,357	$ 2,798	$ 5,471
Consumer Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan			0	1
Post-Modification Recorded Investment | $			$ 0	$ 247
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	1	2	3	8
Post-Modification Recorded Investment | $	$ 148	$ 158	$ 341	$ 822
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Maturity/Rate Combined [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	3	2	6	13
Post-Modification Recorded Investment | $	$ 170	$ 399	$ 618	$ 3,212
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	5	12	30	55
Post-Modification Recorded Investment | $	$ 258	$ 839	$ 1,951	$ 3,733
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	4	0	7	8
Post-Modification Recorded Investment | $	$ 537	$ 0	$ 622	$ 813
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member] | Maturity/Rate Combined [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	8	8	10	13
Post-Modification Recorded Investment | $	$ 8,185	$ 299	$ 8,236	$ 9,153
Commercial Portfolio Segment [Member] | Commercial and Industrial Sector [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	8	0	17	1
Post-Modification Recorded Investment | $	$ 10,585	$ 0	$ 39,328	$ 4
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	0	0	2	0
Post-Modification Recorded Investment | $	$ 0	$ 0	$ 97	$ 0
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member] | Maturity/Rate Combined [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	0	0	1	0
Post-Modification Recorded Investment | $	$ 0	$ 0	$ 245	$ 0
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	0	0	1	0
Post-Modification Recorded Investment | $	$ 0	$ 0	$ 5,111	$ 0

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Loans and Leases (Information on Loans and Leases Modified as TDR within the Previous 12 Months with payment default) (Narrative) (Detail) - Residential Portfolio Segment [Member] $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	1	2	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 241		$ 261	$ 248

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Loans and Leases (Investments in TDRs, Segregated by Risk Rating Exposure) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
Total recorded investment of TDRs	$ 240,373	$ 221,404
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member]
Financing Receivable, Modifications [Line Items]
Total recorded investment of TDRs	94,964	61,673
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member] | (1) - (6) Pass [Member]
Financing Receivable, Modifications [Line Items]
Total recorded investment of TDRs	12,733	8,268
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member] | (7) Special Mention [Member]
Financing Receivable, Modifications [Line Items]
Total recorded investment of TDRs	334	355
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member] | (8) Substandard [Member]
Financing Receivable, Modifications [Line Items]
Total recorded investment of TDRs	74,822	53,050
Commerial, Commercial Real Estate, Equipment Financing TDR's [Member] | (9) Doubtful [Member]
Financing Receivable, Modifications [Line Items]
Total recorded investment of TDRs	$ 7,075	$ 0

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Transfers of Financial Assets (Reserve for loan repurchases) (Detail) - SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 674	$ 843	$ 872	$ 790
Provision (benefit) charged to expense	18	25	(172)	78
Repurchased loans and settlements charged off	(10)	(18)	(18)	(18)
Ending balance	$ 682	$ 850	$ 682	$ 850

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Transfers of Financial Assets (Loans sold) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net gain on sale	$ 1,305	$ 2,421	$ 3,684	$ 8,038
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale	57,042	88,691	147,105	262,029
Loans sold with servicing rights retained	51,014	79,690	130,740	239,357
Net gain on sale	1,051	1,979	2,732	4,356
Ancillary Fee Income Generated by Servicing Financial Assets, Amount	463	682	1,275	2,091
Fair value option adjustment	$ (209)	$ (240)	$ (323)	$ 1,591

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Transfers of Financial Assets (Mortgage Servicing Assets) (Narrative) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Proceeds from loans not originated for sale			$ 674	$ 7,445
Residential Mortgage [Member]
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Retained servicing rights	$ 2,500,000		2,500,000		$ 2,600,000
Contractually Specified Servicing Fees, Amount	$ 300	$ 200	900	600
Proceeds from loans not originated for sale				$ 7,400
Commercial Loan [Member]
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Proceeds from loans not originated for sale			$ 674

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Transfers of Financial Assets Servicing Assets at Amortized Cost Roll Forward (Details) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Beginning Balance	$ 23,341	$ 24,708	$ 25,139	$ 24,466
Additions	1,428	2,576	3,878	7,063
Amortization	(2,125)	(2,144)	(6,373)	(6,389)
Ending Balance	$ 22,644	$ 25,140	$ 22,644	$ 25,140

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Goodwill and Other Intangible Assets (Gross Carrying Value And Accumulated Amortization Of Other Intangible Assets) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 538,373	$ 538,373
Gross Carrying Amount	43,000	43,000
Accumulated Amortization	(16,274)	(13,389)
Net Carrying Amount	26,726	29,611
HSA Bank [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	21,813	21,813
Community Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	516,560	516,560
Core Deposits [Member] | HSA Bank [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,000	22,000
Accumulated Amortization	(10,283)	(8,610)
Net Carrying Amount	11,717	13,390
Customer Relationships [Member] | HSA Bank [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,000	21,000
Accumulated Amortization	(5,991)	(4,779)
Net Carrying Amount	$ 15,009	$ 16,221

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Goodwill and Other Intangible Assets (Schedule Of Expected Future Amortization Expense) (Detail) $ in Thousands	Sep. 30, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2018	$ 962
2019	3,847
2020	3,847
2021	3,847
2022	3,847
Thereafter	$ 10,376

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Deposits (Summary Of Deposits) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Non-interest-bearing:
Demand	$ 4,231,505	$ 4,191,496
Interest-bearing:
HSA	5,599,596	5,038,681
Checking	2,587,679	2,736,952
Money market	2,376,649	2,209,492
Savings	4,106,942	4,348,700
Time deposits	3,095,252	2,468,408
Total interest-bearing	17,766,118	16,802,233
Total deposits	21,997,623	20,993,729
Time deposits and interest-bearing checking, included in above balances, obtained through brokers	938,092	898,157
Time deposits, included in above balance, that exceed the FDIC limit	506,955	561,512
Deposit overdrafts reclassified as loan balances	$ 1,761	$ 2,210

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Deposits (Scheduled Maturities Of Time Deposits) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Remainder of 2017	$ 683,421
2018	1,771,721
2019	437,240
2020	125,265
2021	49,295
Thereafter	28,310
Total time deposits	$ 3,095,252	$ 2,468,408

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Borrowings Borrowings - (Narrative) (Details) - USD ($) $ in Billions	Sep. 30, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Total borrowings	$ 2.2	$ 2.5

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Borrowings (Summary Of Securities Sold Under Agreements To Repurchase And Other Borrowings) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	$ 364,488	$ 588,269
Fed funds purchased	200,000	55,000
Securities sold under agreements to repurchase and other borrowings	$ 564,488	$ 643,269
Securities Sold under Agreements to Repurchase [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time	0.89%	1.66%
Federal Funds Purchased [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time	2.25%	1.37%
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time	1.37%	1.64%
Original maturity of one year or less [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	$ 264,488	$ 288,269
Original maturity of one year or less [Member] | Securities Sold under Agreements to Repurchase [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time	0.29%	0.17%
Original maturity of greater than one year, non-callable [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	$ 100,000	$ 300,000
Original maturity of greater than one year, non-callable [Member] | Securities Sold under Agreements to Repurchase [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time	2.50%	3.10%

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Borrowings (Federal Home Loan Advances) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances, Weighted Average Interest Rate [Abstract]
FHLB advances maturing within 1 year, Weighted Average Contractual Coupon Rate (as a percent)	2.18%	1.48%
FHLB advances maturing after 1 but within 2 years, Weighted Average Contractual Coupon Rate (as a percent)	1.79%	1.81%
FHLB advances maturing after 2 but within 3 years, Weighted Average Contractual Coupon Rate (as a percent)	1.51%	1.73%
FHLB advances maturing after 3 but within 4 years, Weighted Average Contractual Coupon Rate (as a percent)	3.27%	2.06%
FHLB advances maturing after 4 but within 5 years, Weighted Average Contractual Coupon Rate (as a percent)	1.69%	0.00%
FHLB advances maturing after 5 years, Weighted Average Contractual Coupon Rate (as a percent)	2.64%	2.65%
Federal Home Loan Bank, Advances, Weighted Average Contractual Coupon Rate (as a percent)	2.19%	1.61%
Federal Home Loan Bank, Advances, Maturity, Rolling Year [Abstract]
FHLB advances maturing within 1 year, Total Outstanding	$ 948,731	$ 1,150,000
FHLB advances maturing after 1 but within 2 years, Total Outstanding	259,295	103,026
FHLB advances maturing after 2 but within 3 years, Total Outstanding	75,000	215,000
FHLB advances maturing after 3 but within 4 years, Total Outstanding	150,049	200,000
FHLB advances maturing after 4 but within 5 years, Total Outstanding	193	170
FHLB advances maturing after 5 years, Total Outstanding	8,616	8,909
Federal Home Loan Bank, Advances	1,441,884	1,677,105
Pledged Financial Instruments, Not Separately Reported, Loans Receivable, for Federal Home Loan Bank Debt	6,773,182	6,402,066
Remaining borrowing capacity	$ 3,018,052	$ 2,600,624
Previously Reported [Member]
Federal Home Loan Bank, Advances, Weighted Average Interest Rate [Abstract]
FHLB advances maturing after 3 but within 4 years, Weighted Average Contractual Coupon Rate (as a percent)		4.13%
FHLB advances maturing after 5 years, Weighted Average Contractual Coupon Rate (as a percent)		1.96%
Federal Home Loan Bank, Advances, Weighted Average Contractual Coupon Rate (as a percent)		1.85%

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Borrowings (Long Term Debt) (Details) - USD ($)		Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Notes and subordinated debt		$ 227,320,000	$ 227,320,000
Debt issuance cost on senior fixed-rates		(725,000)	(826,000)
Long-term debt		$ 225,957,000	$ 225,767,000
Variable interest rate		5.28%	4.55%
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		2.95%
Long-term Debt [Member]
Debt Instrument [Line Items]
Discount on senior fixed-rate notes		$ (638,000)	$ (727,000)
4.375% Senior fixed-rate notes due February 15, 2024 [Member]
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)		4.375%
Notes and subordinated debt		$ 150,000,000	150,000,000
Junior subordinated debt Webster Statutory Trust I floating-rate notes due September 17, 2033 [Member]
Debt Instrument [Line Items]
Notes and subordinated debt	[1]	$ 77,320,000	$ 77,320,000

[1] The interest rate on Webster Statutory Trust I floating-rate notes, which varies quarterly based on 3-month London Interbank Offered Rate plus 2.95%, was 5.28% at September 30, 2018 and 4.55% at December 31, 2017.

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Accumulated Other Comprehensive Loss, Net of Tax (Schedule of Other Comprehensive Income (Loss)) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			$ 2,701,958	$ 2,527,012
Other comprehensive income (loss), net of tax	$ (9,628)	$ 2,984	(40,033)	7,895
Ending Balance	2,816,198	2,638,787	2,816,198	2,638,787
Available For Sale and Transferred Securities [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(64,617)	(14,501)	(27,947)	(15,476)
(OCL) OCI before reclassifications	(13,811)	872	(50,481)	1,847
Amounts reclassified from AOCL	0	0	0	0
Other comprehensive income (loss), net of tax	(13,811)	872	(50,481)	1,847
Ending Balance	(78,428)	(13,629)	(78,428)	(13,629)
Derivative Instruments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(10,814)	(15,258)	(15,016)	(17,068)
(OCL) OCI before reclassifications	197	(34)	1,620	(445)
Amounts reclassified from AOCL	1,438	1,145	4,217	3,366
Other comprehensive income (loss), net of tax	1,635	1,111	5,837	2,921
Ending Balance	(9,179)	(14,147)	(9,179)	(14,147)
Defined Benefit Pension and Other Postretirement Benefit Plans [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(46,505)	(42,323)	(48,568)	(44,449)
(OCL) OCI before reclassifications	0	0	0	0
Amounts reclassified from AOCL	2,548	1,001	4,611	3,127
Other comprehensive income (loss), net of tax	2,548	1,001	4,611	3,127
Ending Balance	(43,957)	(41,322)	(43,957)	(41,322)
AOCI Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(121,936)	(72,082)	(91,531)	(76,993)
(OCL) OCI before reclassifications	(13,614)	838	(48,861)	1,402
Amounts reclassified from AOCL	3,986	2,146	8,828	6,493
Other comprehensive income (loss), net of tax	(9,628)	2,984	(40,033)	7,895
Ending Balance	$ (131,564)	$ (69,098)	$ (131,564)	$ (69,098)

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Accumulated Other Comprehensive Loss, Net of Tax (Schedule of Accumulated Other Comprehensive Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	$ (13,700)	$ (30,281)	$ (54,518)	$ (81,322)
Earnings applicable to common shareholders	97,460	62,426	255,040	179,262
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	0	0	0	0
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	(1,438)	(1,145)	(4,217)	(3,366)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of accumualted comprehensive income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	494	665	1,447	1,950
Earnings applicable to common shareholders	(1,438)	(1,145)	(4,217)	(3,366)
Total interest expense	(1,932)	(1,810)	(5,664)	(5,316)
Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(3,431)	(1,587)	(6,209)	(4,959)
Defined benefit pension and postretirement benefit plans [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	883	586	1,598	1,832
Net of tax	$ (2,548)	$ (1,001)	$ (4,611)	$ (3,127)

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Regulatory Matters (Information On The Capital Ratios) (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier One Capital	$ 2,215,456		$ 2,093,116
Common Equity Tier One Capital Ratio	11.23%		11.14%
Common Equity Tier One Capital Required for Capital Adequacy	$ 887,910		$ 845,389
Common Equity Tier One Capital Required to be Well-Capitalized	1,282,537		1,221,118
Total risk-based capital, Actual Amount	$ 2,652,270		$ 2,517,848
Total risk-based capital, Actual Ratio	13.44%		13.40%
Total risk-based capital, Capital Requirements, Minimum Amount	$ 1,578,507		$ 1,502,914
Total risk-based capital, Capital Requirements, Minimum Ratio	8.00%		8.00%
Total risk-based capital, Capital Requirements, Well Capitalized Amount	$ 1,973,133		$ 1,878,643
Total risk-based capital, Capital Requirements, Well Capitalized Ratio	10.00%		10.00%
Tier 1 capital, Actual Amount	$ 2,360,493		$ 2,238,172
Tier 1 capital, Actual Ratio	11.96%		11.91%
Tier 1 capital, Capital Requirements, Minimum Amount	$ 1,183,880		$ 1,127,186
Tier 1 capital, Capital Requirements, Minimum Ratio	6.00%		6.00%
Tier 1 capital, Capital Requirements, Well Capitalized Amount	$ 1,578,507		$ 1,502,914
Tier 1 capital, Capital Requirements, Well Capitalized Ratio	8.00%		8.00%
Tier 1 leverage capital ratio, Actual Amount	$ 2,360,493		$ 2,238,172
Tier 1 leverage capital ratio, Actual Ratio	8.89%		8.63%
Tier 1 leverage capital ratio, Capital Requirements, Minimum Amount	$ 1,061,977		$ 1,036,817
Tier 1 leverage capital ratio, Capital Requirements, Minimum Ratio	4.00%		4.00%
Tier 1 leverage capital ratio, Capital Requirements, Well Capitalized Amount	$ 1,327,471		$ 1,296,021
Tier 1 leverage capital ratio, Capital Requirements, Well Capitalized Ratio	5.00%		5.00%
Dividends paid	$ 220,000	$ 80,000
Subsidiaries [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier One Capital	$ 2,137,249		$ 2,114,224
Common Equity Tier One Capital Ratio	10.84%		11.26%
Common Equity Tier One Capital Required for Capital Adequacy	$ 887,232		$ 844,693
Common Equity Tier One Capital Required to be Well-Capitalized	1,281,558		1,220,113
Total risk-based capital, Actual Amount	$ 2,351,706		$ 2,316,580
Total risk-based capital, Actual Ratio	11.93%		12.34%
Total risk-based capital, Capital Requirements, Minimum Amount	$ 1,577,302		$ 1,501,677
Total risk-based capital, Capital Requirements, Minimum Ratio	8.00%		8.00%
Total risk-based capital, Capital Requirements, Well Capitalized Amount	$ 1,971,628		$ 1,877,097
Total risk-based capital, Capital Requirements, Well Capitalized Ratio	10.00%		10.00%
Tier 1 capital, Actual Amount	$ 2,137,249		$ 2,114,224
Tier 1 capital, Actual Ratio	10.84%		11.26%
Tier 1 capital, Capital Requirements, Minimum Amount	$ 1,182,977		$ 1,126,258
Tier 1 capital, Capital Requirements, Minimum Ratio	6.00%		6.00%
Tier 1 capital, Capital Requirements, Well Capitalized Amount	$ 1,577,302		$ 1,501,677
Tier 1 capital, Capital Requirements, Well Capitalized Ratio	8.00%		8.00%
Tier 1 leverage capital ratio, Actual Amount	$ 2,137,249		$ 2,114,224
Tier 1 leverage capital ratio, Actual Ratio	8.05%		8.14%
Tier 1 leverage capital ratio, Capital Requirements, Minimum Amount	$ 1,061,427		$ 1,038,442
Tier 1 leverage capital ratio, Capital Requirements, Minimum Ratio	4.00%		4.00%
Tier 1 leverage capital ratio, Capital Requirements, Well Capitalized Amount	$ 1,326,784		$ 1,298,052
Tier 1 leverage capital ratio, Capital Requirements, Well Capitalized Ratio	5.00%		5.00%
Cash Pass-through Reserve, Federal Home Loan Bank	$ 98,600		$ 82,300
Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier One Capital Ratio	4.50%		4.50%
Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets [Member] | Subsidiaries [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier One Capital Ratio	4.50%		4.50%
Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier One Capital Ratio	6.50%		6.50%
Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets [Member] | Subsidiaries [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier One Capital Ratio	6.50%		6.50%

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Earnings Per Common Share (Earnings Per Share Basic And Diluted) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings for basic and diluted earnings per common share:
Net income	$ 99,673	$ 64,496	$ 261,580	$ 185,546
Less: Preferred stock dividends	1,968	2,024	5,884	6,072
Undistributed Earnings, Basic	97,705	62,472	255,696	179,474
Net income available to common shareholders	97,705	62,472	255,696	179,474
Less: Earnings applicable to participating securities	245	46	656	212
Less: Earnings applicable to participating securities	245	46	656	212
Earnings applicable to common shareholders	97,460	62,426	255,040	179,262
Earnings applicable to common shareholders	$ 97,460	$ 62,426	$ 255,040	$ 179,262
Shares:
Weighted average common shares outstanding - basic (in shares)	91,959	92,125	91,912	92,003
Effect of dilutive securities:
Stock options and restricted stock (in shares)	243	372	303	403
Warrants (in shares)	6	6	6	6
Weighted-average common shares outstanding - diluted (in shares)	92,208	92,503	92,221	92,412
Earnings per common share:
Basic (in dollars per share)	$ 1.06	$ 0.68	$ 2.77	$ 1.95
Diluted (in dollars per share)	$ 1.06	$ 0.67	$ 2.77	$ 1.94

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Earnings Per Common Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Restricted stock (due to performance conditions on non-participating shares) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	97	80	54	61

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Derivative Financial Instruments (Schedule fair value of derivative instruments) (Detail) - USD ($)		Sep. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Derivative instrument assets, Gross Amount		$ 18,376,000	$ 8,992,000
Asset Derivatives, Fair Value, Less: Cash collateral posted		36,300,000
Derivative Asset		81,000	43,000
Liability Derivatives, Fair Value, Gross Liability		651,000	2,387,000
Derivative liability		65,000	142,000
CME [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset		0
Subject to and not subject to Master Netting Agreements [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts		5,023,683,000	4,613,183,000
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		22,008,000	32,515,000
Asset Derivatives, Fair Value, Less: Legally enforceable master netting agreements		586,000	2,245,000
Asset Derivatives, Fair Value, Less: Cash collateral posted		17,709,000	6,704,000
Derivative Asset		3,713,000	23,566,000
Liability Derivatives, Notional Amount		3,449,411,000	3,056,079,000
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		83,889,000	28,423,000
Liability Derivatives, Fair Value, Less: Legally enforceable master netting agreements		586,000	2,245,000
Liability Derivatives, Fair Value, Less: Cash collateral posted		0	0
Derivative liability		83,303,000	26,178,000
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative instrument assets, Gross Amount		4,951,000	2,770,000
Asset Derivatives, Fair Value, Less: Legally enforceable master netting agreements		0	91,000
Asset Derivatives, Fair Value, Less: Cash collateral posted		4,951,000	2,679,000
Derivative Asset		0	0
Liability Derivatives, Fair Value, Gross Liability		0	0
Liability Derivatives, Fair Value, Less: Legally enforceable master netting agreements		0	0
Liability Derivatives, Fair Value, Less: Cash collateral posted		0	0
Derivative liability		0	0
Designated as Hedging Instrument [Member] | Derivatives Subject to Master Netting Arrangement or Similar Arrangement [Member] | Interest rate derivatives [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	[1]	325,000,000	325,000,000
Derivative instrument assets, Gross Amount	[1]	4,951,000	2,770,000
Liability Derivatives, Notional Amount	[1]	0	0
Liability Derivatives, Fair Value, Gross Liability	[1]	0	0
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative instrument assets, Gross Amount		13,425,000	6,222,000
Asset Derivatives, Fair Value, Less: Legally enforceable master netting agreements		586,000	2,154,000
Asset Derivatives, Fair Value, Less: Cash collateral posted		12,758,000	4,025,000
Derivative Asset		81,000	43,000
Liability Derivatives, Fair Value, Gross Liability		651,000	2,387,000
Liability Derivatives, Fair Value, Less: Legally enforceable master netting agreements		586,000	2,245,000
Liability Derivatives, Fair Value, Less: Cash collateral posted		0	0
Derivative liability		65,000	142,000
Not Designated as Hedging Instrument [Member] | CME [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	[1]	2,700,000,000	1,900,000,000
Liability Derivatives, Notional Amount	[1]	47,000,000	595,000,000
Not Designated as Hedging Instrument [Member] | Derivatives Subject to Master Netting Arrangement or Similar Arrangement [Member] | Interest rate derivatives [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	[1]	3,852,438,000	2,791,760,000
Derivative instrument assets, Gross Amount	[1]	13,226,000	5,977,000
Liability Derivatives, Notional Amount	[1]	76,789,000	721,048,000
Liability Derivatives, Fair Value, Gross Liability	[1]	215,000	1,968,000
Not Designated as Hedging Instrument [Member] | Derivatives Subject to Master Netting Arrangement or Similar Arrangement [Member] | Mortgage Banking Derivatives [Member] | RPA-Out [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts		52,067,000	28,497,000
Derivative instrument assets, Gross Amount		223,000	421,000
Not Designated as Hedging Instrument [Member] | Derivatives Subject to Master Netting Arrangement or Similar Arrangement [Member] | Mortgage Banking Derivatives [Member] | RPA-In [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Notional Amount		3,063,000	39,230,000
Liability Derivatives, Fair Value, Gross Liability		7,000	110,000
Not Designated as Hedging Instrument [Member] | Derivatives Subject to Master Netting Arrangement or Similar Arrangement [Member] | Other [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	[1]	24,879,000	7,914,000
Derivative instrument assets, Gross Amount	[1]	199,000	258,000
Liability Derivatives, Notional Amount	[1]	23,927,000	30,328,000
Liability Derivatives, Fair Value, Gross Liability	[1]	435,000	419,000
Not Designated as Hedging Instrument [Member] | Derivatives Not Subject to Master Netting Arrangement or Similar Arrangement [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts		4,698,683,000	4,288,183,000
Asset Derivatives, Fair Value, Positions not subject to master netting agreement		17,057,000	29,745,000
Liability Derivatives, Notional Amount		3,449,411,000	3,056,079,000
Liability Derivatives, Fair Value, Positions not subject to master netting agreement		83,889,000	28,423,000
Not Designated as Hedging Instrument [Member] | Derivatives Not Subject to Master Netting Arrangement or Similar Arrangement [Member] | Interest rate derivatives [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts		677,679,000	1,366,299,000
Asset Derivatives, Fair Value, Positions not subject to master netting agreement		3,090,000	23,009,000
Liability Derivatives, Notional Amount		3,242,821,000	2,146,518,000
Liability Derivatives, Fair Value, Positions not subject to master netting agreement		83,142,000	25,631,000
Not Designated as Hedging Instrument [Member] | Derivatives Not Subject to Master Netting Arrangement or Similar Arrangement [Member] | RPAs [Member] | RPA-Out [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts		84,702,000	93,713,000
Asset Derivatives, Fair Value, Positions not subject to master netting agreement		19,000	80,000
Not Designated as Hedging Instrument [Member] | Derivatives Not Subject to Master Netting Arrangement or Similar Arrangement [Member] | RPAs [Member] | RPA-In [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Notional Amount		100,294,000	116,882,000
Liability Derivatives, Fair Value, Positions not subject to master netting agreement		43,000	111,000
Not Designated as Hedging Instrument [Member] | Derivatives Not Subject to Master Netting Arrangement or Similar Arrangement [Member] | Other [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts		6,918,000	0
Asset Derivatives, Fair Value, Positions not subject to master netting agreement		300,000	0
Liability Derivatives, Notional Amount		2,517,000	2,073,000
Liability Derivatives, Fair Value, Positions not subject to master netting agreement		47,000	$ 184,000
Loan Origination Commitments [Member]
Derivatives, Fair Value [Line Items]
Other Commitment		33,000,000.0
Interest Rate Lock Commitments [Member]
Derivatives, Fair Value [Line Items]
Other Commitment		$ 9,100,000

[1] o report derivative positions subject to a legally enforceable master netting agreement on a net basis, net of cash collateral. Refer to the Offsetting Derivatives section of this footnote for additional information.

XML

Derivative Financial Instruments (Schedule of the changes in the fair value of non-hedge accounting derivatives) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 1,393	$ 2,031	$ 8,507	$ 2,373
Interest Rate Derivatives [Member] | Operating Expense [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	1,667	1,928	5,158	5,953
Interest Rate Derivatives [Member] | Operating Expense [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	1,623	2,955	7,372	5,850
RPA [Member] | Operating Expense [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	22	51	117	157
Mortgage Banking Derivatives [Member] | Operating Expense [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	(26)	(219)	(95)	(1,886)
Other [Member] | Operating Expense [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ (226)	$ (756)	$ 1,113	$ (1,748)

XML

Derivative Financial Instruments (AOCI Related to Cash Flow Hedges) (Narrative) (Detail) - Cash Flow Hedging [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Estimate of amount to be reclassified from AOCL	$ (4,300)
Remaining unamortized gain (loss) on termination of cash flow hedges	(10,100)
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Estimate of amount to be reclassified from AOCL	$ (264)

XML

Derivative Financial Instruments (Offsetting Derivatives) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Derivative [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 1,393	$ 2,031	$ 8,507	$ 2,373
Derivative instrument assets, Gross Amount	18,376		18,376		$ 8,992
Derivative instrument asset, Amount Offset	36,300		36,300
Derivative Asset	81		81		43
Liability Derivatives, Fair Value, Gross Liability	651		651		2,387
Derivative liability	65		65		142
Hedge Accounting Positions [Member]
Derivative [Line Items]
Derivative instrument assets, Gross Amount	4,951		4,951		2,770
Derivative instrument asset, Amount Offset, Total	0		0		(91)
Derivative instrument asset, Amount Offset	4,951		4,951		2,679
Derivative Asset	0		0		0
Liability Derivatives, Fair Value, Gross Liability	0		0		0
Derivative instrument liability, Amount Offset, Total	0		0		0
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0		0		0
Derivative liability	0		0		0
Non-Hedged Accounting Positions [Member]
Derivative [Line Items]
Derivative instrument assets, Gross Amount	13,425		13,425		6,222
Derivative instrument asset, Amount Offset, Total	(586)		(586)		(2,154)
Derivative instrument asset, Amount Offset	12,758		12,758		4,025
Derivative Asset	81		81		43
Liability Derivatives, Fair Value, Gross Liability	651		651		2,387
Derivative instrument liability, Amount Offset, Total	(586)		(586)		(2,245)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0		0		0
Derivative liability	65		65		142
Subject to and not subject to Master Netting Agreements [Member]
Derivative [Line Items]
Derivative instrument asset, Amount Offset, Total	(586)		(586)		(2,245)
Derivative instrument asset, Amount Offset	17,709		17,709		6,704
Derivative Asset	3,713		3,713		23,566
Derivative instrument liability, Amount Offset, Total	(586)		(586)		(2,245)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0		0		0
Derivative liability	83,303		83,303		$ 26,178
Interest Rate Derivatives [Member] | Operating Expense [Member] | Hedge Accounting Positions [Member]
Derivative [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	1,667	1,928	5,158	5,953
Interest Rate Derivatives [Member] | Operating Expense [Member] | Non-Hedged Accounting Positions [Member]
Derivative [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 1,623	$ 2,955	$ 7,372	$ 5,850

XML

Derivative Financial Instruments (Counterparty Credit Risk Narrative) (Detail) $ in Millions	Sep. 30, 2018 USD ($)
Derivative [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	$ 3.1
Valuation, Market Approach [Member]
Derivative [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	$ 31.7

XML

Derivative Financial Instruments Offsetting Liabilities (Details) $ in Millions	Sep. 30, 2018 USD ($)
Offsetting Liabilities [Line Items]
Derivative instrument asset, Amount Offset	$ 36.3
Derivative, Collateral, Right to Reclaim Cash	(80.0)
Exchange Cleared [Member]
Offsetting Liabilities [Line Items]
Derivative, Collateral, Right to Reclaim Cash	(98.2)
Over the Counter [Member]
Offsetting Liabilities [Line Items]
Derivative, Collateral, Right to Reclaim Cash	$ (18.1)

XML

Fair Value Measurements (Narrative) (Detail) $ in Millions	Sep. 30, 2018 USD ($)
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Book value of other real estate owned (OREO) and repossessed assets	$ 5.3
Rabbi Trust [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	2.0
Alternative investments [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	$ 3.6

XML

Fair Value Measurements (Fair Value Assets And Liabilities Measured On Recurring and Nonrecurring Basis) (Detail) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Financial assets held at fair value:
Debt Securities, Available-for-sale		$ 2,823,953	$ 2,638,037
Investment securities available-for-sale, at fair value		2,823,953	2,638,037
Derivative Asset		81	43
Loans Held-for-sale, Fair Value Disclosure		17,137	20,888
Financial liabilities held at fair value:
Derivative liability		65	142
US Treasury Bill Securities [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		9,214	1,247
Agency CMO [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		246,466	306,333
Agency MBS [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		1,409,731	1,107,841
Agency CMBS [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		570,549	588,026
Non-agency CMBS [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		404,902	361,067
CLO [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		127,661	209,851
Single issuer trust preferred securities [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		0	7,050
Corporate debt securities [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		55,430	56,622
Fair Value, Measurements, Recurring [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		2,823,953
Investment securities available-for-sale, at fair value			2,638,037
Alternative Investment		2,073	3,495
Total financial assets held at fair value		2,870,101	2,699,736
Financial liabilities held at fair value:
Derivative liability	[1]	83,889	28,423
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets For Identical Assets (Level 1) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		9,214
Investment securities available-for-sale, at fair value			1,247
Alternative Investment		0	0
Total financial assets held at fair value		14,642	6,306
Financial liabilities held at fair value:
Derivative liability	[1]	462	587
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		2,814,739
Investment securities available-for-sale, at fair value			2,636,790
Alternative Investment		0	0
Total financial assets held at fair value		2,853,386	2,689,935
Financial liabilities held at fair value:
Derivative liability	[1]	83,427	27,836
Fair Value, Measurements, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Investment securities available-for-sale, at fair value			0
Alternative Investment		2,073	3,495
Total financial assets held at fair value		2,073	3,495
Financial liabilities held at fair value:
Derivative liability			0
Fair Value, Measurements, Recurring [Member] | Derivative instruments [Member]
Financial assets held at fair value:
Derivative Asset	[1]	22,008	32,515
Fair Value, Measurements, Recurring [Member] | Derivative instruments [Member] | Quoted Prices in Active Markets For Identical Assets (Level 1) [Member]
Financial assets held at fair value:
Derivative Asset	[1]	498	258
Fair Value, Measurements, Recurring [Member] | Derivative instruments [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Derivative Asset	[1]	21,510	32,257
Fair Value, Measurements, Recurring [Member] | Derivative instruments [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Derivative Asset			0
Fair Value, Measurements, Recurring [Member] | Investments Held In Rabbi Trust [Member]
Financial assets held at fair value:
Other assets		4,930	4,801
Fair Value, Measurements, Recurring [Member] | Investments Held In Rabbi Trust [Member] | Quoted Prices in Active Markets For Identical Assets (Level 1) [Member]
Financial assets held at fair value:
Other assets		4,930	4,801
Fair Value, Measurements, Recurring [Member] | Investments Held In Rabbi Trust [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Other assets			0
Fair Value, Measurements, Recurring [Member] | Loan Origination Commitments [Member]
Financial assets held at fair value:
Loans Held-for-sale, Fair Value Disclosure		17,137	20,888
Fair Value, Measurements, Recurring [Member] | Loan Origination Commitments [Member] | Quoted Prices in Active Markets For Identical Assets (Level 1) [Member]
Financial assets held at fair value:
Loans Held-for-sale, Fair Value Disclosure		0	0
Fair Value, Measurements, Recurring [Member] | Loan Origination Commitments [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Loans Held-for-sale, Fair Value Disclosure		17,137	20,888
Fair Value, Measurements, Recurring [Member] | Loan Origination Commitments [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Loans Held-for-sale, Fair Value Disclosure		0
Fair Value, Measurements, Recurring [Member] | US Treasury Bill Securities [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		9,214
Investment securities available-for-sale, at fair value			1,247
Fair Value, Measurements, Recurring [Member] | US Treasury Bill Securities [Member] | Quoted Prices in Active Markets For Identical Assets (Level 1) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		9,214
Investment securities available-for-sale, at fair value			1,247
Fair Value, Measurements, Recurring [Member] | US Treasury Bill Securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Agency CMO [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		246,466
Investment securities available-for-sale, at fair value			306,333
Fair Value, Measurements, Recurring [Member] | Agency CMO [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		246,466
Investment securities available-for-sale, at fair value			306,333
Fair Value, Measurements, Recurring [Member] | Agency CMO [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Agency MBS [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		1,409,731
Investment securities available-for-sale, at fair value			1,107,841
Fair Value, Measurements, Recurring [Member] | Agency MBS [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		1,409,731
Investment securities available-for-sale, at fair value			1,107,841
Fair Value, Measurements, Recurring [Member] | Agency MBS [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Agency CMBS [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		570,549
Investment securities available-for-sale, at fair value			588,026
Fair Value, Measurements, Recurring [Member] | Agency CMBS [Member] | Quoted Prices in Active Markets For Identical Assets (Level 1) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		0
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Agency CMBS [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		570,549
Investment securities available-for-sale, at fair value			588,026
Fair Value, Measurements, Recurring [Member] | Agency CMBS [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		0
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Agency CMBS [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		0
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Non-agency CMBS [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		404,902
Investment securities available-for-sale, at fair value			361,067
Fair Value, Measurements, Recurring [Member] | Non-agency CMBS [Member] | Quoted Prices in Active Markets For Identical Assets (Level 1) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		0
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Non-agency CMBS [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		404,902
Investment securities available-for-sale, at fair value			361,067
Fair Value, Measurements, Recurring [Member] | Non-agency CMBS [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		0
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Non-agency CMBS [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		0
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | CLO [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		127,661
Investment securities available-for-sale, at fair value			209,851
Fair Value, Measurements, Recurring [Member] | CLO [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		127,661
Investment securities available-for-sale, at fair value			209,851
Fair Value, Measurements, Recurring [Member] | CLO [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Single issuer trust preferred securities [Member]
Financial assets held at fair value:
Investment securities available-for-sale, at fair value			7,050
Fair Value, Measurements, Recurring [Member] | Single issuer trust preferred securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Investment securities available-for-sale, at fair value			7,050
Fair Value, Measurements, Recurring [Member] | Single issuer trust preferred securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Investment securities available-for-sale, at fair value			0
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		55,430
Investment securities available-for-sale, at fair value			56,622
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets held at fair value:
Debt Securities, Available-for-sale		$ 55,430
Investment securities available-for-sale, at fair value			56,622
Fair Value, Measurements, Recurring [Member] | Corporate debt securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Financial assets held at fair value:
Investment securities available-for-sale, at fair value			$ 0

[1] or information relating to the impact of netting derivative assets and derivative liabilities as well as the impact from offsetting cash collateral paid to the same derivative counterparties see Note 12:Derivative Financial Instruments.

XML

Fair Value Measurements Fair Value Option, Disclosures (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$ 17,137	$ 20,888
Fair Value, Option, Loans Held as Assets, Aggregate Difference	(151)	542
loans held for sale [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans and Leases Receivable, Gross, Consumer, Real Estate	$ 17,288	$ 20,346

XML

Fair Value Measurements (Summary Of Estimated Fair Values Of Significant Financial Instruments) (Detail) - USD ($) $ in Thousands		Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale		$ 17,137		$ 20,888
Mortgage servicing assets, Carrying Amount		22,644	$ 23,341	25,139	$ 25,140	$ 24,708	$ 24,466
Fair Value, Measurements, Nonrecurring [Member] | Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and leases, net		18,109,187		17,323,864
Securities sold under agreements to repurchase and other borrowings		564,488		643,269
FHLB advances	[1]	1,441,884		1,677,105
Long-term debt	[1]	225,957		225,767
Fair Value, Measurements, Nonrecurring [Member] | Reported Value Measurement [Member] | Deposits Liabilities, other than time deposits [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deposits		18,902,371		18,525,321
Fair Value, Measurements, Nonrecurring [Member] | Reported Value Measurement [Member] | Time Deposits [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deposits		3,095,252		2,468,408
Fair Value, Measurements, Nonrecurring [Member] | Reported Value Measurement [Member] | Held-to-maturity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity investment securities		4,332,458		4,487,392
Fair Value, Measurements, Nonrecurring [Member] | Reported Value Measurement [Member] | Residential Mortgage [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing assets, Carrying Amount		22,644		25,139
Fair Value, Measurements, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities sold under agreements to repurchase and other borrowings		564,396		644,084
FHLB advances	[1]	1,439,155		1,678,070
Long-term debt	[1]	229,336		234,359
Fair Value, Measurements, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and leases, net		17,913,452		17,211,619
Fair Value, Measurements, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Deposits Liabilities, other than time deposits [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deposits		18,902,371		18,525,321
Fair Value, Measurements, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Time Deposits [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deposits		3,067,487		2,455,245
Fair Value, Measurements, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Held-to-maturity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held-to-maturity investment securities		4,164,359		4,456,350
Fair Value, Measurements, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | Residential Mortgage [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing assets, Fair value		$ 48,661		$ 45,309

[1] djustments to the carrying amount of long-term debt for unamortized discount and debt issuance cost on senior fixed-rate notes are not included for determination of fair value, see Note 8:Borrowings.

XML

Retirement Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 12	$ 0	$ 37
Interest cost on benefit obligations	1,857	1,829	5,577	5,486
Expected return on plan assets	(3,178)	(3,074)	(9,538)	(9,222)
Amortization of prior service cost	0	0	0	0
Recognized net loss	1,160	1,466	3,480	4,398
Net periodic benefit cost	(161)	233	(481)	699
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost on benefit obligations	35	96	201	281
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Recognized net loss	2,271	136	2,729	561
Net periodic benefit cost	2,306	232	2,930	842
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost on benefit obligations	20	19	59	69
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Recognized net loss	0	(15)	0	0
Net periodic benefit cost	$ 20	$ 4	$ 59	$ 69

XML

Share-Based Plans (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 2.7	$ 3.0	$ 8.6	$ 9.1
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock compensation expense	$ 16.4		$ 16.4
Weighted average recognition period			2 years
Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	100,000		100,000
Time Based Restricted Stock Awards [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			1 year
Time Based Restricted Stock Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			3 years
Performance-Based Restricted Stock Awards Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			3 years
Vesting range (as a percent)			50.00%
Performance-Based Restricted Stock Awards Shares [Member] | Minimum [Member] | Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting range (as a percent)			0.00%
Performance-Based Restricted Stock Awards Shares [Member] | Maximum [Member] | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting range (as a percent)			150.00%
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	492,792		492,792		673,039
Employee Stock Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award (in years)			P10Y
Non-Qualified Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	458,904		458,904
Incentive Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	33,888		33,888

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Share-Based Plans (Summary of Restricted Stock and Stock Option Activity) (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense		$ 2.7	$ 3.0	$ 8.6	$ 9.1
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted stock, Outstanding at beginning of period (in shares)				207,800
Restricted stock, Granted (in shares)				145,382
Restricted stock, Vested restricted stock awards (in shares)	[1]			129,445
Restricted stock, Forfeited (in shares)				8,041
Restricted stock, Outstanding at end of period (in shares)		215,696		215,696
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Restricted stock, at beginning of period, Weighted-average Grant Date Fair Value (in dollars per share)				$ 43.16
Restricted stock, Granted (in dollars per share)				58.36
Restricted stock, Vested restricted stock awards (in dollars per share)	[1]			44.80
Restricted stock, Forfeited (in dollars per share)				52.53
Restricted stock, at end of period, Weighted-average Grant Date Fair Value (in dollars per share)		$ 51.91		$ 51.91
Performance-Based Restricted Stock Awards Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted stock, Outstanding at beginning of period (in shares)				78,916
Restricted stock, Granted (in shares)				75,707
Restricted stock, Vested restricted stock awards (in shares)	[1]			55,112
Restricted stock, Forfeited (in shares)				13,847
Restricted stock, Outstanding at end of period (in shares)		85,664		85,664
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Restricted stock, at beginning of period, Weighted-average Grant Date Fair Value (in dollars per share)				$ 45.35
Restricted stock, Granted (in dollars per share)				55.82
Restricted stock, Vested restricted stock awards (in dollars per share)	[1]			46.08
Restricted stock, Forfeited (in dollars per share)				51.19
Restricted stock, at end of period, Weighted-average Grant Date Fair Value (in dollars per share)		$ 53.19		$ 53.19
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, at beginning of period, Number of Shares				673,039
Options granted, Number of Shares				0
Exercised options, Number of Shares				180,247
Options forfeited, Number of Shares				0
Options outstanding, at end of period, Number of Shares		492,792		492,792
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Options, at beginning of period, Weighted-average Exercise Price (in dollars per share)				$ 18.75
Options granted, Weighted-Average Exercise Price (in dollars per share)				0
Exercised options, Weighted-Average Exercise Price (in dollars per share)				11.71
Options forfeited, Weighted-Average Exercise Price (in dollars per share)				0
Options, at end of period, Weighted-average Exercise Price (in dollars per share)		$ 21.33		$ 21.33

[1] ested for purposes of recording compensation expense.

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Segment Reporting (Operating Results and Total Assets Reportable Segments) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total Assets	$ 27,346,317		$ 27,346,317		$ 26,487,645
Net interest income (expense)	230,372	$ 200,904	669,550	$ 591,355
Provision for Loan and Lease Losses	10,500	10,150	32,000	27,900
Net interest income after provision for loan and lease losses	219,872	190,754	637,550	563,455
Noninterest Income	72,284	65,846	209,405	193,439
Total non-interest expense	178,783	161,823	530,857	490,026
Income (loss) before income tax expense	113,373	94,777	316,098	266,868
Income tax expense	13,700	30,281	54,518	81,322
Net income	99,673	64,496	261,580	185,546
Operating Segments [Member] | Commercial Banking [Member]
Segment Reporting Information [Line Items]
Total Assets	10,327,878		10,327,878		9,350,028
Net interest income (expense)	91,243	81,925	264,353	239,118
Provision for Loan and Lease Losses	8,207	12,073	26,300	29,562
Net interest income after provision for loan and lease losses	83,036	69,852	238,053	209,556
Noninterest Income	18,305	13,207	48,662	39,163
Total non-interest expense	44,506	38,339	128,730	113,767
Income (loss) before income tax expense	56,835	44,720	157,985	134,952
Income tax expense	13,981	14,363	38,864	41,125
Net income	42,854	30,357	119,121	93,827
Operating Segments [Member] | HSA Bank [Member]
Segment Reporting Information [Line Items]
Total Assets	71,172		71,172		76,308
Net interest income (expense)	36,731	26,713	104,920	76,339
Provision for Loan and Lease Losses	0	0	0	0
Net interest income after provision for loan and lease losses	36,731	26,713	104,920	76,339
Noninterest Income	22,159	19,371	67,710	58,392
Total non-interest expense	30,753	27,222	93,488	84,211
Income (loss) before income tax expense	28,137	18,862	79,142	50,520
Income tax expense	7,316	6,006	20,577	15,395
Net income	20,821	12,856	58,565	35,125
Operating Segments [Member] | Community Banking [Member]
Segment Reporting Information [Line Items]
Total Assets	8,730,295		8,730,295		8,909,671
Net interest income (expense)	101,952	96,859	302,782	286,351
Provision for Loan and Lease Losses	2,293	(1,923)	5,700	(1,662)
Net interest income after provision for loan and lease losses	99,659	98,782	297,082	288,013
Noninterest Income	26,848	27,079	78,421	80,516
Total non-interest expense	95,769	92,478	287,795	281,979
Income (loss) before income tax expense	30,738	33,383	87,708	86,550
Income tax expense	6,117	10,605	17,454	26,374
Net income	24,621	22,778	70,254	60,176
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Total Assets	8,216,972		8,216,972		$ 8,151,638
Net interest income (expense)	446	(4,593)	(2,505)	(10,453)
Provision for Loan and Lease Losses	0	0	0	0
Net interest income after provision for loan and lease losses	446	(4,593)	(2,505)	(10,453)
Noninterest Income	4,972	6,189	14,612	15,368
Total non-interest expense	7,755	3,784	20,844	10,069
Income (loss) before income tax expense	(2,337)	(2,188)	(8,737)	(5,154)
Income tax expense	(13,714)	(693)	(22,377)	(1,572)
Net income	$ 11,377	$ (1,495)	$ 13,640	$ (3,582)

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Segment Reporting Segment Reporting Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) Segment	Sep. 30, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | Segment			3
Deposit insurance	$ 9,694	$ 6,344	$ 30,098	$ 19,701
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Deposit insurance			$ 10,000

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Revenue from Contracts with Customers Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 50,230	$ 47,000	$ 150,732	$ 139,238
Noninterest Income	72,284	65,846	209,405	193,439
Deposit service fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	40,601	38,321	121,911	113,519
Wealth and investment services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8,412	7,750	24,738	22,900
Other non interest income [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,217	929	4,083	2,819
Non-interest income within the scope of other GAAP topics [Member]
Disaggregation of Revenue [Line Items]
Noninterest Income	22,054	18,846	58,673	54,201
Operating Segments [Member] | Commercial Banking [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	5,788	5,590	17,316	16,300
Noninterest Income	18,305	13,207	48,662	39,163
Operating Segments [Member] | Commercial Banking [Member] | Deposit service fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,211	3,119	9,613	9,012
Operating Segments [Member] | Commercial Banking [Member] | Wealth and investment services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,577	2,471	7,703	7,288
Operating Segments [Member] | Commercial Banking [Member] | Other non interest income [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Operating Segments [Member] | Commercial Banking [Member] | Non-interest income within the scope of other GAAP topics [Member]
Disaggregation of Revenue [Line Items]
Noninterest Income	12,517	7,617	31,346	22,863
Operating Segments [Member] | Community Banking [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	22,302	21,939	65,624	64,287
Noninterest Income	26,848	27,079	78,421	80,516
Operating Segments [Member] | Community Banking [Member] | Deposit service fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	16,107	16,435	47,079	48,046
Operating Segments [Member] | Community Banking [Member] | Wealth and investment services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	5,843	5,288	17,060	15,638
Operating Segments [Member] | Community Banking [Member] | Other non interest income [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	352	216	1,485	603
Operating Segments [Member] | Community Banking [Member] | Non-interest income within the scope of other GAAP topics [Member]
Disaggregation of Revenue [Line Items]
Noninterest Income	4,546	5,140	12,797	16,229
Operating Segments [Member] | HSA Bank [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	22,159	19,371	67,710	58,392
Noninterest Income	22,159	19,371	67,710	58,392
Operating Segments [Member] | HSA Bank [Member] | Deposit service fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	21,294	18,658	65,112	56,176
Operating Segments [Member] | HSA Bank [Member] | Wealth and investment services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Operating Segments [Member] | HSA Bank [Member] | Other non interest income [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	865	713	2,598	2,216
Operating Segments [Member] | HSA Bank [Member] | Non-interest income within the scope of other GAAP topics [Member]
Disaggregation of Revenue [Line Items]
Noninterest Income	0	0	0	0
Corporate, Non-Segment [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(19)	100	82	259
Noninterest Income	4,972	6,189	14,612	15,368
Corporate, Non-Segment [Member] | Deposit service fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(11)	109	107	285
Corporate, Non-Segment [Member] | Wealth and investment services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(8)	(9)	(25)	(26)
Corporate, Non-Segment [Member] | Other non interest income [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Corporate, Non-Segment [Member] | Non-interest income within the scope of other GAAP topics [Member]
Disaggregation of Revenue [Line Items]
Noninterest Income	$ 4,991	$ 6,089	$ 14,530	$ 15,109

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Commitments and Contingencies (Outstanding Financial Instruments Contract Amounts Represent Credit Risk) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Total credit-related financial instruments with off-balance sheet risk	$ 5,905,527	$ 5,806,789
Standby letter of credit [Member]
Loss Contingencies [Line Items]
Total credit-related financial instruments with off-balance sheet risk	185,859	195,902
Commercial letter of credit [Member]
Loss Contingencies [Line Items]
Total credit-related financial instruments with off-balance sheet risk	36,393	43,200
Commitments to extend credit [Member]
Loss Contingencies [Line Items]
Total credit-related financial instruments with off-balance sheet risk	$ 5,683,275	$ 5,567,687

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(Reserve for Unfunded Commitments) (Detail) - SEC Schedule, 12-09, Allowance, Credit Loss [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 2,596	$ 2,544	$ 2,362	$ 2,287
Provision charged to expense	28	0	262	257
Ending balance	$ 2,624	$ 2,544	$ 2,624	$ 2,544

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Subsequent Events Discontinued Operations and Disposal Groups (Details) - Sale of Banking Centers [Member] - Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] $ in Millions	Sep. 30, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operations Number of Banking Centers	6
Disposal Group, Including Discontinued Operation, Deposits	$ 105