10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended: September 30, 2023

☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from             to

Commission file number: 001-31343

Associated Banc-Corp

(Exact name of registrant as specified in its charter)

Wisconsin	39-1098068
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

433 Main Street
Green Bay,	Wisconsin	54301
(Address of principal executive offices)		(Zip Code)

(920) 491-7500

(Registrant’s telephone number, including area code)

(not applicable)

(Former name, former address and former fiscal year, if changed since last report)

Securities Registered Pursuant to Section 12(b) of the Act:

Title of each class	Trading symbol(s)	Name of each exchange on which registered
Common stock, par value $0.01 per share	ASB	New York Stock Exchange
Depositary Shrs, each representing 1/40th intrst in a shr of 5.875% Non-Cum. Perp Pref Stock, Srs E	ASB PrE	New York Stock Exchange
Depositary Shrs, each representing 1/40th intrst in a shr of 5.625% Non-Cum. Perp Pref Stock, Srs F	ASB PrF	New York Stock Exchange
6.625% Fixed-Rate Reset Subordinated Notes due 2033	ASBA	New York Stock Exchange

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 (§ 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 transition 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 Rule 12b-2 of the Exchange Act).

Yes  ☐        No  ☑

APPLICABLE ONLY TO CORPORATE ISSUERS:

The number of shares outstanding of registrant’s common stock, par value $0.01 per share, at October 23, 2023 was 150,939,712.

1

ASSOCIATED BANC-CORP

Table of Contents

		Page
PART I. Financial Information
	Item 1. Financial Statements (Unaudited):	5
	Consolidated Balance Sheets	5
	Consolidated Statements of Income	6
	Consolidated Statements of Comprehensive Income	7
	Consolidated Statements of Changes in Stockholders’ Equity	8
	Consolidated Statements of Cash Flows	10
	Notes to Consolidated Financial Statements	12
	Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	49
	Item 3. Quantitative and Qualitative Disclosures About Market Risk	73
	Item 4. Controls and Procedures	74
PART II. Other Information
	Item 1. Legal Proceedings	75
	Item 1A. Risk Factors	75
	Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	75
	Item 5. Other Information	75
	Item 6. Exhibits	76
	Signatures	77

2

ASSOCIATED BANC-CORP

Commonly Used Terms

The following listing provides a reference of common acronyms, abbreviations, and other defined terms used throughout the document:

ACLL	Allowance for Credit Losses on Loans
AFS	Available for Sale
ALCO	Asset / Liability Committee
ASU	Accounting Standards Update
the Bank	Associated Bank, National Association
Basel III	International framework established by the Basel Committee on Banking Supervision for the regulation of capital and liquidity
bp	basis point(s)
BTFP	Bank Term Funding Program
Call Report	Consolidated Reports of Condition and Income
CDs	Certificates of Deposit
CDIs	Core Deposit Intangibles
CECL	Current Expected Credit Losses
CET1	Common Equity Tier 1
CFPB	Consumer Financial Protection Bureau
Corporation / our	Associated Banc-Corp collectively with all of its subsidiaries and affiliates
CRA	Community Reinvestment Act
CRE	Commercial Real Estate
EAR	Earnings at Risk
Exchange Act	Securities Exchange Act of 1934, as amended
FASB	Financial Accounting Standards Board
FDIC	Federal Deposit Insurance Corporation
Federal Reserve	Board of Governors of the Federal Reserve System
FFELP	Federal Family Education Loan Program
FHLB	Federal Home Loan Bank
FHLMC	Federal Home Loan Mortgage Corporation
FICO	Fair Isaac Corporation, provider of a broad-based risk score to aid in credit decisions
FNMA	Federal National Mortgage Association
FTEs	Full-time equivalent employees
FTP	Funds Transfer Pricing
GAAP	Generally Accepted Accounting Principles
GNMA	Government National Mortgage Association
GSEs	Government-Sponsored Enterprises
HTM	Held to Maturity
LOCOM	Lower of Cost or Market
LTV	Loan-to-Value
Moody's	Moody’s Investors Service
MSRs	Mortgage Servicing Rights
MVE	Market Value of Equity
NAV	Measured at fair value using Net Asset Value per share (or its equivalent) as a practical expedient
Net Free Funds	Noninterest-bearing sources of funds
NPAs	Nonperforming Assets
OCI	Other Comprehensive Income
OREO	Other Real Estate Owned

3

Parent Company	Associated Banc-Corp individually
RAP	Retirement Account Plan - the Corporation's noncontributory defined benefit retirement plan
Repurchase Agreements	Securities sold under agreements to repurchase
Restricted Stock Awards	Restricted common stock and restricted common stock units to certain key employees
Retirement Eligible Colleagues	Colleagues whose retirement meets the early retirement or normal retirement definitions under the applicable equity compensation plan
ROCET1	Return on Common Equity Tier 1
SBA	Small Business Administration
SEC	U.S. Securities and Exchange Commission
Series E Preferred Stock	The Corporation's 5.875% Non-Cumulative Perpetual Preferred Stock, Series E, liquidation preference $1,000 per share
Series F Preferred Stock	The Corporation's 5.625% Non-Cumulative Perpetual Preferred Stock, Series F, liquidation preference $1,000 per share
SOFR	Secured Overnight Finance Rate
TDRs	Troubled Debt Restructurings
YTD	Year-to-Date

4

PART I - FINANCIAL INFORMATION
ITEM 1.	Financial Statements:

ASSOCIATED BANC-CORP

Consolidated Balance Sheets

	Sep 30, 2023		Dec 31, 2022
(In thousands, except share and per share data)	(Unaudited)		(Audited)
Assets
Cash and due from banks	$	388,694	$	436,952
Interest-bearing deposits in other financial institutions	323,130		156,693
Federal funds sold and securities purchased under agreements to resell	965		27,810
AFS investment securities, at fair value	3,491,679		2,742,025
HTM investment securities, net, at amortized cost	3,900,415		3,960,398
Equity securities	35,937		25,216
FHLB and Federal Reserve Bank stocks, at cost	268,698		295,496
Residential loans held for sale	54,790		20,383
Loans	30,193,187		28,799,569
Allowance for loan losses	(345,795)		(312,720)
Loans, net	29,847,392		28,486,849
Tax credit and other investments	256,905		276,773
Premises and equipment, net	373,017		376,906
Bank and corporate owned life insurance	679,775		676,530
Goodwill	1,104,992		1,104,992
Other intangible assets, net	42,674		49,282
Mortgage servicing rights, net	89,131		77,351
Interest receivable	171,119		144,449
Other assets	608,068		547,621
Total assets	$	41,637,381	$	39,405,727
Liabilities and stockholders' equity
Noninterest-bearing demand deposits	$	6,422,994	$	7,760,811
Interest-bearing deposits	25,700,332		21,875,343
Total deposits	32,123,326		29,636,154
Federal funds purchased and securities sold under agreements to repurchase	451,644		585,139
Commercial paper	—		20,798
FHLB advances	3,733,041		4,319,861
Other long-term funding	529,459		248,071
Allowance for unfunded commitments	34,776		38,776
Accrued expenses and other liabilities	637,491		541,438
Total liabilities	$	37,509,738	$	35,390,237
Stockholders’ equity
Preferred equity	$	194,112	$	194,112
Common equity
Common stock	$	1,752	$	1,752
Surplus	1,711,454		1,712,733
Retained earnings	3,074,014		2,904,882
Accumulated other comprehensive (loss)	(339,140)		(272,799)
Treasury stock, at cost	(514,549)		(525,190)
Total common equity	3,933,531		3,821,378
Total stockholders’ equity	4,127,643		4,015,490
Total liabilities and stockholders’ equity	$	41,637,381	$	39,405,727
Preferred shares authorized (par value $1.00 per share)	750,000		750,000
Preferred shares issued and outstanding	200,000		200,000
Common shares authorized (par value $0.01 per share)	250,000,000		250,000,000
Common shares issued	175,216,409		175,216,409
Common shares outstanding	150,951,209		150,444,019

Numbers may not sum due to rounding.

See accompanying notes to consolidated financial statements.

5

Item 1. Financial Statements Continued:

ASSOCIATED BANC-CORP

Consolidated Statements of Income (Unaudited)

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
(In thousands, except per share data)	2023		2022		2023		2022
Interest income
Interest and fees on loans	$	447,912	$	275,666	$	1,262,538	$	643,239
Interest and dividends on investment securities
Taxable	38,210		19,221		104,197		54,009
Tax-exempt	15,941		16,538		47,960		49,025
Other interest	6,575		3,284		17,990		7,696
Total interest income	508,637		314,708		1,432,685		753,969
Interest expense
Interest on deposits	193,131		26,000		464,749		37,590
Interest on federal funds purchased and securities sold under agreements to repurchase	3,100		756		8,504		1,200
Interest on other short-term funding	—		1		1		2
Interest on FHLB advances	48,143		20,792		147,365		38,663
Interest on long-term funding	10,019		2,722		25,895		8,182
Total interest expense	254,394		50,270		646,514		85,637
Net interest income	254,244		264,439		786,171		668,332
Provision for credit losses	21,943		16,998		62,014		13,006
Net interest income after provision for credit losses	232,301		247,440		724,157		655,326
Noninterest income
Wealth management fees	20,828		19,984		61,499		63,719
Service charges and deposit account fees	12,864		15,029		38,230		48,392
Card-based fees	11,510		11,479		33,492		32,847
Other fee-based revenue	4,509		4,487		13,249		12,613
Capital markets, net	5,368		7,675		15,544		24,331
Mortgage banking, net	6,501		2,098		17,814		16,635
Bank and corporate owned life insurance	2,047		1,827		6,882		8,004
Asset gains, net	625		18		590		1,883
Investment securities gains (losses), net	(11)		5,664		55		5,676
Other	2,339		2,527		6,841		6,613
Total noninterest income	66,579		70,788		194,195		220,713
Noninterest expense
Personnel	117,159		118,243		347,669		335,720
Technology	26,172		22,694		73,990		65,401
Occupancy	14,125		13,717		42,775		43,948
Business development and advertising	7,100		6,778		20,054		17,388
Equipment	5,016		4,921		14,921		14,841
Legal and professional	4,461		4,159		13,149		14,118
Loan and foreclosure costs	2,049		1,631		4,822		5,121
FDIC assessment	9,150		5,800		25,575		16,300
Other intangible amortization	2,203		2,203		6,608		6,608
Other	8,771		15,645		24,726		31,057
Total noninterest expense	196,205		195,791		574,291		550,503
Income before income taxes	102,674		122,438		344,061		325,536
Income tax expense	19,426		26,163		70,299		68,176
Net income	83,248		96,275		273,762		257,360
Preferred stock dividends	2,875		2,875		8,625		8,625
Net income available to common equity	$	80,373	$	93,400	$	265,137	$	248,735
Earnings per common share
Basic	$	0.53	$	0.62	$	1.76	$	1.66
Diluted	$	0.53	$	0.62	$	1.75	$	1.65
Average common shares outstanding
Basic	150,035		149,321		149,929		149,063
Diluted	151,014		150,262		150,971		150,205

Numbers may not sum due to rounding.

See accompanying notes to consolidated financial statements.

6

Item 1. Financial Statements Continued:

ASSOCIATED BANC-CORP

Consolidated Statements of Comprehensive Income (Unaudited)

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net income	$	83,248	$	96,275	$	273,762	$	257,360
Other comprehensive (loss), net of tax
AFS investment securities
Net unrealized (losses)	(56,924)		(100,092)		(69,512)		(268,413)
Unrealized (losses) on AFS securities transferred to HTM securities	—		—		—		(67,604)
Amortization of net unrealized losses on AFS securities transferred to HTM securities	2,327		2,888		6,883		7,269
Reclassification adjustment for net (gains) realized in net income	—		—		—		(12)
Income tax benefit	13,928		24,810		15,879		83,906
Other comprehensive (loss) on AFS securities	(40,669)		(72,394)		(46,751)		(244,854)
Cash flow hedge derivatives
Net unrealized (losses)	(13,592)		—		(33,976)		—
Reclassification adjustment for net losses realized in net income	4,516		—		9,097		—
Income tax benefit	2,315		—		5,488		—
Other comprehensive (loss) on cash flow hedge derivatives	(6,762)		—		(19,391)		—
Defined benefit pension and postretirement obligations
Amortization of prior service cost	(81)		(82)		(244)		(244)
Amortization of actuarial (gain) loss	(7)		347		15		494
Income tax benefit (expense)	23		(474)		31		(470)
Other comprehensive (loss) on pension and postretirement obligations	(66)		(209)		(198)		(221)
Total other comprehensive (loss)	(47,497)		(72,603)		(66,340)		(245,074)
Comprehensive income	$	35,751	$	23,672	$	207,422	$	12,286

Numbers may not sum due to rounding.

See accompanying notes to consolidated financial statements.

7

Item 1. Financial Statements Continued:    

ASSOCIATED BANC-CORP

Consolidated Statements of Changes in Stockholders’ Equity (Unaudited)

(In thousands, except per share data)	Preferred Equity		Common Stock		Surplus		Retained Earnings		Accumulated Other Comprehensive  (Loss)		Treasury Stock		Total
Balance, December 31, 2022	$	194,112	$	1,752	$	1,712,733	$	2,904,882	$	(272,799)	$	(525,190)	$	4,015,490
Comprehensive income:
Net income	—		—		—		103,360		—		—		103,360
Other comprehensive income	—		—		—		—		39,211		—		39,211
Comprehensive income													142,571
Common stock issued:
Stock-based compensation plans, net	—		—		(12,612)		—		—		14,379		1,766
Purchase of treasury stock, stock-based compensation plans	—		—		—		—		—		(5,362)		(5,362)
Cash dividends:
Common stock, $0.21 per share	—		—		—		(32,013)		—		—		(32,013)
Preferred stock(a)	—		—		—		(2,875)		—		—		(2,875)
Stock-based compensation expense, net	—		—		6,086		—		—		—		6,086
Balance, March 31, 2023	$	194,112	$	1,752	$	1,706,206	$	2,973,354	$	(233,588)	$	(516,173)	$	4,125,663
Comprehensive income:
Net income	—		—		—		87,154		—		—		87,154
Other comprehensive (loss)	—		—		—		—		(58,054)		—		(58,054)
Comprehensive income													29,100
Common stock issued:
Stock-based compensation plans, net	—		—		(1,677)		—		—		1,770		93
Purchase of treasury stock, stock-based compensation plans	—		—		—		—		—		(884)		(884)
Cash dividends:
Common stock, $0.21 per share	—		—		—		(31,996)		—		—		(31,996)
Preferred stock(a)	—		—		—		(2,875)		—		—		(2,875)
Stock-based compensation expense, net	—		—		3,773		—		—		—		3,773
Balance, June 30, 2023	$	194,112	$	1,752	$	1,708,303	$	3,025,637	$	(291,642)	$	(515,287)	$	4,122,874
Comprehensive income:
Net income	—		—		—		83,248		—		—		83,248
Other comprehensive (loss)	—		—		—		—		(47,497)		—		(47,497)
Comprehensive income													35,751
Common stock issued:
Stock-based compensation plans, net	—		—		(497)		—		—		999		503
Purchase of treasury stock, stock-based compensation plans	—		—		—		—		—		(261)		(261)
Cash dividends:
Common stock, $0.21 per share	—		—		—		(31,996)		—		—		(31,996)
Preferred stock(a)	—		—		—		(2,875)		—		—		(2,875)
Stock-based compensation expense, net	—		—		3,648		—		—		—		3,648
Balance, September 30, 2023	$	194,112	$	1,752	$	1,711,454	$	3,074,014	$	(339,140)	$	(514,549)	$	4,127,643

Numbers may not sum due to rounding.

(a) Series E, $0.3671875 per share; and Series F, $0.3515625 per share.

8

(In thousands, except per share data)	Preferred Equity		Common Stock		Surplus		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Treasury Stock		Total
Balance, December 31, 2021	$	193,195	$	1,752	$	1,713,851	$	2,672,601	$	(10,317)	$	(546,229)	$	4,024,853
Change in accounting principle(a)	—		—		—		1,713		—		—		1,713
Total stockholders' equity at beginning of period, as adjusted	193,195		1,752		1,713,851		2,674,314		(10,317)		(546,229)		4,026,566
Comprehensive (loss):
Net income	—		—		—		74,262		—		—		74,262
Other comprehensive (loss)	—		—		—		—		(126,708)		—		(126,708)
Comprehensive (loss)													(52,445)
Common stock issued:
Stock-based compensation plans, net	—		—		(11,911)		—		—		18,565		6,654
Purchase of treasury stock, stock-based compensation plans	—		—		—		—		—		(5,193)		(5,193)
Cash dividends:
Common stock, $0.20 per share	—		—		—		(30,583)		—		—		(30,583)
Preferred stock(b)	—		—		—		(2,875)		—		—		(2,875)
Stock-based compensation expense, net	—		—		6,164		—		—		—		6,164
Balance, March 31, 2022	$	193,195	$	1,752	$	1,708,104	$	2,715,118	$	(137,024)	$	(532,858)	$	3,948,287
Comprehensive income:
Net income	—		—		—		86,824		—		—		86,824
Other comprehensive (loss)	—		—		—		—		(45,764)		—		(45,764)
Comprehensive income													41,060
Common stock issued:
Stock-based compensation plans, net	—		—		(1,771)		—		—		1,910		139
Purchase of treasury stock, stock-based compensation plans	—		—		—		—		—		(884)		(884)
Cash dividends:
Common stock, $0.20 per share	—		—		—		(30,331)		—		—		(30,331)
Preferred stock(b)	—		—		—		(2,875)		—		—		(2,875)
Stock-based compensation expense, net	—		—		3,986		—		—		—		3,986
Balance, June 30, 2022	$	193,195	$	1,752	$	1,710,319	$	2,768,736	$	(182,788)	$	(531,832)	$	3,959,382
Comprehensive income:
Net income	—		—		—		96,275		—		—		96,275
Other comprehensive (loss)	—		—		—		—		(72,603)		—		(72,603)
Comprehensive income													23,672
Common stock issued:
Stock-based compensation plans, net	—		—		(3,274)		—		—		4,540		1,266
Purchase of treasury stock, stock-based compensation plans	—		—		—		—		—		(181)		(181)
Cash dividends:
Common stock, $0.20 per share	—		—		—		(30,342)		—		—		(30,342)
Preferred stock(b)	—		—		—		(2,875)		—		—		(2,875)
Stock-based compensation expense, net	—		—		3,030		—		—		—		3,030
Other	916		—		—		(916)		—		—		—
Balance, September 30, 2022	$	194,112	$	1,752	$	1,710,075	$	2,830,877	$	(255,391)	$	(527,473)	$	3,953,952

Numbers may not sum due to rounding.

(a) MSRs at December 31, 2021 were carried at LOCOM. On January 1, 2022, the Corporation made the irrevocable election to account for MSRs at fair value.

(b) Series E, $0.3671875 per share; and Series F, $0.3515625 per share.

See accompanying notes to consolidated financial statements.

9

Item 1. Financial Statements Continued:

ASSOCIATED BANC-CORP

Consolidated Statements of Cash Flows (Unaudited)

	Nine Months Ended Sep 30,
($ in thousands)	2023		2022
Cash flows from operating activities
Net income	$	273,762	$	257,360
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	62,014		13,006
Depreciation and amortization	34,703		33,743
Change in MSRs valuation	(14,658)		(22,348)
Amortization of other intangible assets	6,608		6,608
Amortization and accretion on earning assets, funding, and other, net	27,394		13,280
Net amortization of tax credit investments	25,830		25,916
(Gains) on sales of investment securities, net	—		(260)
Asset (gains), net	(590)		(1,883)
Loss on mortgage banking activities, net	2,154		5,712
Mortgage loans originated and acquired for sale	(283,469)		(535,694)
Proceeds from sales of mortgage loans held for sale	254,619		620,352
Changes in certain assets and liabilities:
(Increase) in interest receivable	(26,670)		(35,254)
Increase in interest payable	69,461		1,795
(Decrease) in expense payable	(22,632)		(17,994)
Increase in net derivative position	3,721		320,972
Net change in other assets and other liabilities	(34,137)		37,018
Net cash provided by operating activities	378,110		722,330
Cash flows from investing activities
Net (increase) in loans	(1,436,901)		(3,595,331)
Purchases of:
AFS securities	(1,109,501)		(510,301)
HTM securities	(41,524)		(245,826)
FHLB and Federal Reserve Bank stocks and equity securities	(114,985)		(112,157)
Proceeds from:
Sales of AFS securities	—		1,061
Sale of FHLB and Federal Reserve Bank stocks and equity securities	131,272		259
Prepayments, calls, and maturities of AFS securities	288,313		392,275
Prepayments, calls, and maturities of HTM securities	101,847		153,163
Sales, prepayments, calls, and maturities of other assets	20,224		31,732
Premises, equipment, and software, net of disposals	(43,541)		(45,441)
Net change in tax credit and alternative investments	(19,615)		(50,386)
Net cash (used in) investing activities	(2,224,411)		(3,980,951)
Cash flows from financing activities
Net increase in deposits	2,487,225		732,347
Net (decrease) in short-term funding	(154,292)		(69,902)
Net increase (decrease) in short-term FHLB advances	(580,000)		2,583,000
Repayment of long-term FHLB advances	(568)		(413,523)
Proceeds from long-term FHLB advances	1,369		1,356
Proceeds from issuance of long-term funding	292,740		—
(Repayment) proceeds of finance lease principal	(64)		327
Proceeds from issuance of common stock for stock-based compensation plans	2,362		8,059
Purchase of treasury stock, stock-based compensation plans	(6,507)		(6,259)
Cash dividends on common stock	(96,005)		(91,256)
Cash dividends on preferred stock	(8,625)		(8,625)
Net cash provided by financing activities	1,937,635		2,735,525
Net increase (decrease) in cash and cash equivalents	91,334		(523,096)
Cash and cash equivalents at beginning of period	621,455		1,025,515
Cash and cash equivalents at end of period(a)	$	712,789	$	502,419

Numbers may not sum due to rounding.

(a) No restricted cash due to the Federal Reserve reducing the required reserve ratio to zero.

10

ASSOCIATED BANC-CORP

Consolidated Statements of Cash Flows (Unaudited)

	Nine Months Ended Sep 30,
($ in thousands)	2023		2022
Supplemental disclosures of cash flow information
Cash paid for interest	$	576,221	$	83,337
Cash paid for income and franchise taxes	68,382		6,087
Loans and bank premises transferred to OREO	5,917		5,052
Capitalized mortgage servicing rights	2,477		6,316
Loans transferred into held for sale from portfolio, net	6,833		1,789
Transfer of AFS securities to HTM securities	—		1,621,990
Unsettled trades to purchase securities	—		4,130
Write-up of equity securities without readily determinable fair values	—		5,690
Fair value adjustments on hedged long-term FHLB advances and subordinated debt	18,652		14,703
Fair value adjustments on foreign currency exchange forwards	3,308		10,610
Fair value adjustment on cash flow hedges	(19,391)		—

11

Item 1. Financial Statements Continued:

ASSOCIATED BANC-CORP

Notes to Consolidated Financial Statements

These interim consolidated financial statements have been prepared according to the rules and regulations of the SEC and, therefore, certain information and footnote disclosures normally presented in accordance with GAAP have been omitted or abbreviated. The information contained on the consolidated financial statements and footnotes in Associated Banc-Corp's 2022 Annual Report on Form 10-K should be referred to in connection with the reading of these unaudited interim consolidated financial statements.

Note 1 Basis of Presentation

In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the financial position, results of operations and comprehensive income, changes in stockholders’ equity, and cash flows of the Corporation and Parent Company for the periods presented, and all such adjustments are of a normal recurring nature. The consolidated financial statements include the accounts of all subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the full year.

In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and revenues and expenses for the period. Actual results could differ significantly from those estimates. Estimates that are particularly susceptible to significant change include the determination of the ACLL. Management has evaluated subsequent events for potential recognition or disclosure.

Within the tables presented, certain columns and rows may not sum due to the use of rounded numbers for disclosure purposes.

Note 2 Summary of Significant Accounting Policies

The accounting and reporting policies of the Corporation conform to U.S. GAAP and to general practice within the financial services industry. A discussion of these policies can be found in Note 1 Summary of Significant Accounting Policies included in the Corporation’s 2022 Annual Report on Form 10-K.

New Accounting Pronouncements Adopted

Standard	Description	Date of adoption	Effect on financial statements
ASU 2022-02 Financial Instruments-Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures	The FASB issued these amendments to eliminate accounting guidance for TDRs by creditors in Subtopic 310-40, Receivables-Troubled Debt Restructurings by Creditors, while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty, and to require that an entity disclose current-period gross writeoffs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments-Credit Losses-Measured at Amortized Cost. The amendments in this Update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, and should be applied prospectively, except as provided in the next sentence. For the transition method related to the recognition and measurement of TDRs, an entity has the option to apply a modified retrospective transition method, resulting in a cumulative-effect adjustment to retained earnings in the period of adoption. Early adoption is permitted if an entity has adopted the amendments in Update 2016-03, including adoption in an interim period.	1st Quarter 2023	Adoption of this amendment did not have a material impact on the Corporation's results of operation, financial position or liquidity, but resulted in additional disclosure requirements related to gross charge offs by vintage year and the removal of TDR disclosures, replaced by additional disclosures on the types of modifications of loans to borrowers experiencing financial difficulties. The Corporation has adopted this update prospectively.

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Future Accounting Pronouncements

The expected impact of applicable material accounting pronouncements recently issued or proposed but not yet required to be adopted are discussed in the table below. To the extent that the adoption of new accounting standards materially affects the Corporation's financial condition, results of operations, liquidity or disclosures, the impacts are discussed in the applicable sections of this financial review.

Standard	Description	Date of anticipated adoption	Effect on financial statements
ASU 2023-02 Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method	The amendments in this update permit reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. A reporting entity may make an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. The amendments in this update also remove certain guidance for Qualified Affordable Housing Project investments and require the application of the delayed equity contribution guidance to all tax equity investments. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and must be applied on either a modified retrospective or a retrospective basis. Early adoption is permitted in any interim period, however if adopted in an interim period the entity shall adopt the amendments in this update as of the beginning of the fiscal year that includes the interim period.	1st Quarter 2024	The Corporation is currently evaluating the impact on its results of operation, financial position, liquidity, and disclosures.

Note 3 Earnings Per Common Share

Earnings per common share are calculated utilizing the two-class method. Basic earnings per common share are calculated by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding. Diluted earnings per common share are calculated by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding adjusted for the dilutive effect of common stock awards (outstanding stock options and unvested restricted stock awards). Presented below are the calculations for basic and diluted earnings per common share:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands, except per share data)	2023		2022		2023		2022
Net income	$	83,248	$	96,275	$	273,762	$	257,360
Preferred stock dividends	(2,875)		(2,875)		(8,625)		(8,625)
Net income available to common equity	$	80,373	$	93,400	$	265,137	$	248,735
Common shareholder dividends	(31,806)		(30,149)		(95,417)		(90,647)
Unvested share-based payment awards	(190)		(194)		(588)		(609)
Undistributed earnings	$	48,377	$	63,057	$	169,132	$	157,479
Undistributed earnings allocated to common shareholders	$	48,090	$	62,648	$	168,136	$	156,454
Undistributed earnings allocated to unvested share-based payment awards	287		409		996		1,025
Undistributed earnings	$	48,377	$	63,057	$	169,132	$	157,479
Basic
Distributed earnings to common shareholders	$	31,806	$	30,149	$	95,417	$	90,647
Undistributed earnings allocated to common shareholders	48,090		62,648		168,136		156,454
Total common shareholders earnings, basic	$	79,896	$	92,796	$	263,553	$	247,102
Diluted
Distributed earnings to common shareholders	$	31,806	$	30,149	$	95,417	$	90,647
Undistributed earnings allocated to common shareholders	48,090		62,648		168,136		156,454
Total common shareholders earnings, diluted	$	79,896	$	92,796	$	263,553	$	247,102
Weighted average common shares outstanding	150,035		149,321		149,929		149,063
Effect of dilutive common stock awards	980		942		1,042		1,141
Diluted weighted average common shares outstanding	151,014		150,262		150,971		150,205
Basic earnings per common share	$	0.53	$	0.62	$	1.76	$	1.66
Diluted earnings per common share	$	0.53	$	0.62	$	1.75	$	1.65

Approximately 4 million and 3 million anti-dilutive common stock shares were excluded from the earnings per common share calculation for the three months ended September 30, 2023 and 2022, respectively, and approximately 3 million anti-dilutive

13

common stock shares were excluded from the earnings per common share calculation for both the nine months ended September 30, 2023 and 2022.

Note 4 Stock-Based Compensation

The fair values of stock options and restricted stock awards are amortized as compensation expense on a straight-line basis over the vesting period of the grants. For colleagues who meet the definition of retirement eligible under the 2017 Incentive Compensation Plan and the 2020 Incentive Compensation Plan, expenses related to stock options and restricted stock awards are fully recognized on the date the colleague meets the definition of normal or early retirement. Compensation expense recognized is included in personnel expense on the consolidated statements of income.

A summary of the Corporation’s stock option activity for the nine months ended September 30, 2023 is presented below:

Stock Options	Shares(a)	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value(a)
Outstanding at December 31, 2022	3,994	$	21.06	5.11 years	$	10,525
Exercised	61	17.04
Forfeited or expired	10	23.45
Outstanding at September 30, 2023	3,923	$	21.12	4.41 years	$	107
Options Exercisable at September 30, 2023	3,709	$	21.30	4.29 years	$	81

(a) In thousands

Intrinsic value represents the amount by which the fair market value of the underlying stock exceeds the exercise price of the stock option. For the nine months ended September 30, 2023, the intrinsic value of stock options exercised was approximately $272,000, compared to $3 million for the nine months ended September 30, 2022. For the nine months ended September 30, 2023, the total fair value of stock options vested was approximately $955,000 compared to $2 million for the nine months ended September 30, 2022.

The Corporation recognized compensation expense for the vesting of stock options of approximately $265,000 for the nine months ended September 30, 2023, compared to approximately $587,000 for the nine months ended September 30, 2022. At September 30, 2023, the Corporation had approximately $113,000 of unrecognized compensation expense related to stock options that is expected to be recognized over the remaining requisite service periods that extend predominately through the first quarter of 2024.

The Corporation also has issued time-based and performance-based restricted stock awards under the 2017 Incentive Compensation Plan and subsequent 2020 Incentive Compensation Plan. Performance awards are based on performance goals determined by the Compensation and Benefits Committee of the Corporation's Board of Directors, with vesting ranging from a minimum of 0% to a maximum of 150% of the target award. Performance awards are valued utilizing a Monte Carlo simulation model to estimate fair value of the awards at the grant date.

The following table summarizes information about the Corporation’s restricted stock awards activity for the nine months ended September 30, 2023:

Restricted Stock	Shares(a)	Weighted Average Grant Date Fair Value
Outstanding at December 31, 2022	2,303	$	20.81
Granted	830	22.47
Vested	771	21.01
Forfeited	35	22.10
Outstanding at September 30, 2023	2,327	$	21.32

(a) In thousands

The Corporation amortizes the expense related to restricted stock awards as compensation expense over the vesting period specified in the grant's award agreement. Performance-based restricted stock awards granted during 2022 and 2023 will cliff-vest after the three year performance period has ended. Service-based restricted stock awards granted during 2022 and 2023 will generally vest ratably over a period of four years. Expense for restricted stock awards of $14 million was recorded for the nine months ended September 30, 2023, compared to $13 million for the nine months ended September 30, 2022. Included in compensation expense for the first nine months of 2023 was $3 million of expense for the accelerated vesting of restricted stock awards granted to retirement eligible colleagues. The Corporation had $23 million of unrecognized compensation costs related to restricted stock awards at September 30, 2023 that are expected to be recognized over the remaining requisite service periods that extend predominately through the first quarter of 2027.

14

The Corporation has the ability to issue shares from treasury or new shares upon the exercise of stock options or the granting of restricted stock awards. The Board of Directors has authorized management to repurchase shares of the Corporation’s common stock, to be made available for issuance in connection with the Corporation’s employee incentive plans and for other corporate purposes. The repurchase of shares, if any, will be based on market and investment opportunities, capital levels, growth prospects, and regulatory constraints. Such repurchases may occur from time to time in open market purchases, block transactions, private transactions, accelerated share repurchase programs, or similar facilities.

Note 5 Investment Securities

Investment securities are designated as AFS, HTM, or equity on the consolidated balance sheets at the time of purchase. The amortized cost and fair values of AFS and HTM securities at September 30, 2023 were as follows:

($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	$	124,555	$	—	$	(15,531)	$	109,024
Agency securities	15,000		—		(1,410)		13,590
Obligations of state and political subdivisions (municipal securities)	226,808		—		(16,492)		210,317
Residential mortgage-related securities:
FNMA/FHLMC	1,678,641		115		(241,997)		1,436,759
GNMA	1,416,569		—		(31,898)		1,384,670
Commercial mortgage-related securities:
FNMA/FHLMC	18,779		—		(2,625)		16,154
GNMA	188,667		—		(12,193)		176,474
Asset backed securities:
FFELP	140,881		83		(2,450)		138,514
SBA	3,299		9		(46)		3,261
Other debt securities	3,000		—		(85)		2,915
Total AFS investment securities	$	3,816,198	$	207	$	(324,727)	$	3,491,679
HTM investment securities
U.S. Treasury securities	$	999	$	—	$	(51)	$	948
Obligations of state and political subdivisions (municipal securities)	1,700,162		12		(279,659)		1,420,516
Residential mortgage-related securities:
FNMA/FHLMC	956,107		28,038		(220,577)		763,567
GNMA	50,489		15		(5,192)		45,312
Private-label	349,410		10,228		(85,120)		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	782,291		13,329		(206,522)		589,097
GNMA	61,025		421		(9,506)		51,940
Total HTM investment securities	$	3,900,483	$	52,043	$	(806,627)	$	3,145,898

15

The amortized cost and fair values of AFS and HTM securities at December 31, 2022 were as follows:

($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	$	124,441	$	—	$	(15,063)	$	109,378
Agency securities	15,000		—		(1,468)		13,532
Obligations of state and political subdivisions (municipal securities)	235,693		96		(5,074)		230,714
Residential mortgage-related securities:
FNMA/FHLMC	1,820,642		404		(216,436)		1,604,610
GNMA	502,537		314		(5,255)		497,596
Commercial mortgage-related securities:
FNMA/FHLMC	19,038		—		(1,896)		17,142
GNMA	115,031		—		(4,569)		110,462
Asset backed securities:
FFELP	157,138		—		(5,947)		151,191
SBA	4,512		15		(51)		4,477
Other debt securities	3,000		—		(78)		2,922
Total AFS investment securities	$	2,997,032	$	830	$	(255,837)	$	2,742,025
HTM investment securities
U.S. Treasury securities	$	999	$	—	$	(62)	$	936
Obligations of state and political subdivisions (municipal securities)	1,732,351		1,994		(182,697)		1,551,647
Residential mortgage-related securities:
FNMA/FHLMC	961,231		31,301		(175,760)		816,771
GNMA	52,979		85		(3,436)		49,628
Private-label	364,728		11,697		(72,920)		303,505
Commercial mortgage-related securities:
FNMA/FHLMC	778,796		15,324		(178,281)		615,839
GNMA	69,369		577		(7,254)		62,691
Total HTM investment securities	$	3,960,451	$	60,978	$	(620,411)	$	3,401,018

Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The expected maturities of AFS and HTM securities at September 30, 2023, are shown below:

	AFS					HTM
($ in thousands)	Amortized Cost		Fair Value			Amortized Cost		Fair Value
Due in one year or less	$	7,436	$	7,368		$	16,715	$	16,673
Due after one year through five years	190,843		170,918			47,774		46,115
Due after five years through ten years	136,473		125,923			155,329		144,145
Due after ten years	34,611		31,636			1,481,344		1,214,531
Total debt securities	369,363		335,846			1,701,161		1,421,464
Residential mortgage-related securities:
FNMA/FHLMC	1,678,641		1,436,759			956,107		763,567
GNMA	1,416,569		1,384,670			50,489		45,312
Private-label	—		—			349,410		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	18,779		16,154			782,291		589,097
GNMA	188,667		176,474			61,025		51,940
Asset backed securities:
FFELP	140,881		138,514			—		—
SBA	3,299		3,261			—		—
Total investment securities	$	3,816,198	$	3,491,679		$	3,900,483	$	3,145,898
Ratio of fair value to amortized cost			91.5		%			80.7		%

16

On a quarterly basis, the Corporation refreshes the credit quality of each HTM security. The following table summarizes the credit quality indicators of HTM securities at amortized cost at September 30, 2023:

($ in thousands)	AAA		AA		A		Not Rated		Total
U.S. Treasury securities	$	999	$	—	$	—	$	—	$	999
Obligations of state and political subdivisions (municipal securities)	769,052		923,707		6,248		1,156		1,700,162
Residential mortgage-related securities:
FNMA/FHLMC	956,107		—		—		—		956,107
GNMA	50,489		—		—		—		50,489
Private-label	349,410		—		—		—		349,410
Commercial mortgage-related securities:
FNMA/FHLMC	782,291		—		—		—		782,291
GNMA	61,025		—		—		—		61,025
Total HTM securities	$	2,969,372	$	923,707	$	6,248	$	1,156	$	3,900,483

The following table summarizes the credit quality indicators of HTM securities at amortized cost at December 31, 2022:

($ in thousands)	AAA		AA		A		Not Rated		Total
U.S. Treasury securities	$	999	$	—	$	—	$	—	$	999
Obligations of state and political subdivisions (municipal securities)	806,529		917,059		7,604		1,158		1,732,351
Residential mortgage-related securities:
FNMA/FHLMC	961,231		—		—		—		961,231
GNMA	52,979		—		—		—		52,979
Private-label	364,728		—		—		—		364,728
Commercial mortgage-related securities:
FNMA/FHLMC	778,796		—		—		—		778,796
GNMA	69,369		—		—		—		69,369
Total HTM securities	$	3,034,630	$	917,059	$	7,604	$	1,158	$	3,960,451

The following table summarizes gross realized gains and losses on AFS securities, net write-up of equity securities, and proceeds from the sale of AFS investment securities for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Gross realized gains on AFS securities	$	—	$	—	$	—	$	21
Gross realized (losses) on AFS securities	—		—		—		(8)
Gain on sale and net write-up (down) of equity securities	(11)		5,664		55		5,664
Investment securities gains (losses), net	$	(11)	$	5,664	$	55	$	5,676
Proceeds from sales of AFS investment securities	$	—	$	—	$	—	$	1,061

During the third quarter of 2022, the Corporation sold its Visa Class B restricted shares obtained in the acquisition of First Staunton, which were carried at a zero-cost basis. The remaining shares, which are carried at fair value, were subsequently written up to reflect the new observable price resulting from that sale.

Investment securities with a carrying value of $1.6 billion and $2.3 billion at September 30, 2023 and December 31, 2022, respectively, were pledged as required to secure certain deposits or for other purposes.

Accrued interest receivable on HTM securities totaled $16 million and $19 million at September 30, 2023 and December 31, 2022, respectively. Accrued interest receivable on AFS securities totaled $14 million and $9 million at September 30, 2023 and December 31, 2022, respectively. Accrued interest receivable on both HTM and AFS securities is included in interest receivable on the consolidated balance sheets. There was no interest income reversed for investments going into nonaccrual at both September 30, 2023 and December 31, 2022.

A security is considered past due once it is 30 days past due under the terms of the agreement. At both September 30, 2023 and December 31, 2022, the Corporation had no past due HTM securities.

The allowance for credit losses on HTM securities was approximately $67,000 at September 30, 2023 and approximately $54,000 at December 31, 2022, attributable entirely to the Corporation's municipal securities, included in HTM investment securities, net, at amortized cost on the consolidated balance sheets. The Corporation also holds U.S. Treasury, municipal, and mortgage-related securities issued by the U.S. government or a GSE which are backed by the full faith and credit of the U.S. government and private-label residential mortgage-related securities that have credit enhancement which covers the first 15% of losses and, as a result, no allowance for credit losses has been recorded related to these securities.

17

The following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position, at September 30, 2023:

	Less than 12 months					12 months or more					Total
($ in thousands)	Number of Securities	Unrealized (Losses)		Fair Value		Number of Securities	Unrealized (Losses)		Fair Value		Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	—	$	—	$	—	7	$	(15,531)	$	109,024	$	(15,531)	$	109,024
Agency securities	—	—		—		1	(1,410)		13,590		(1,410)		13,590
Obligations of state and political subdivisions (municipal securities)	229	(6,575)		108,953		182	(9,916)		100,413		(16,492)		209,367
Residential mortgage-related securities:
FNMA/FHLMC	20	(1,390)		24,258		107	(240,606)		1,394,562		(241,997)		1,418,820
GNMA	75	(27,131)		1,271,478		17	(4,767)		61,087		(31,898)		1,332,565
Commercial mortgage-related securities:
FNMA/FHLMC	—	—		—		1	(2,625)		16,154		(2,625)		16,154
GNMA	9	(5,848)		100,659		33	(6,345)		75,815		(12,193)		176,474
Asset backed securities:
FFELP	—	—		—		14	(2,450)		129,503		(2,450)		129,503
SBA	2	(1)		620		7	(46)		1,525		(46)		2,144
Other debt securities	1	(21)		979		2	(63)		1,937		(85)		2,915
Total	336	$	(40,967)	$	1,506,947	371	$	(283,760)	$	1,903,609	$	(324,727)	$	3,410,556
HTM investment securities
U.S. Treasury securities	—	$	—	$	—	1	$	(51)	$	948	$	(51)	$	948
Obligations of state and political subdivisions (municipal securities)	586	(48,660)		663,360		567	(230,998)		743,274		(279,659)		1,406,634
Residential mortgage-related securities:
FNMA/FHLMC	31	(2,239)		37,996		92	(218,338)		725,539		(220,577)		763,535
GNMA	8	(466)		11,058		78	(4,726)		34,253		(5,192)		45,312
Private-label	—	—		—		18	(85,120)		274,518		(85,120)		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	2	(2,746)		24,130		43	(203,776)		564,968		(206,522)		589,097
GNMA	—	—		—		13	(9,506)		51,940		(9,506)		51,940
Total	627	$	(54,112)	$	736,544	812	$	(752,515)	$	2,395,440	$	(806,627)	$	3,131,984

18

For comparative purposes, the following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2022:

	Less than 12 months					12 months or more					Total
($ in thousands)	Number of Securities	Unrealized (Losses)		Fair Value		Number of Securities	Unrealized (Losses)		Fair Value		Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	—	$	—	$	—	7	$	(15,063)	$	109,378	$	(15,063)	$	109,378
Agency securities	—	—		—		1	(1,468)		13,532		(1,468)		13,532
Obligations of state and political subdivisions (municipal securities)	358	(5,066)		201,260		4	(8)		1,916		(5,074)		203,176
Residential mortgage-related securities:
FNMA/FHLMC	24	(31,266)		260,986		84	(185,170)		1,321,420		(216,436)		1,582,406
GNMA	23	(4,415)		220,276		2	(840)		11,096		(5,255)		231,372
Commercial mortgage-related securities:
FNMA/FHLMC	1	(1,896)		17,142		—	—		—		(1,896)		17,142
GNMA	33	(3,920)		101,036		4	(649)		9,426		(4,569)		110,462
Asset backed securities:
FFELP	3	(1,668)		44,304		12	(4,278)		106,887		(5,947)		151,191
SBA	2	(1)		417		6	(50)		2,057		(51)		2,474
Other debt securities	2	(30)		1,970		1	(49)		951		(78)		2,922
Total	446	$	(48,263)	$	847,391	121	$	(207,575)	$	1,576,665	$	(255,837)	$	2,424,055
HTM investment securities
U.S. Treasury securities	1	$	(62)	$	936	—	$	—	$	—	$	(62)	$	936
Obligations of state and political subdivisions (municipal securities)	771	(96,282)		1,079,216		156	(86,415)		231,022		(182,697)		1,310,238
Residential mortgage-related securities:
FNMA/FHLMC	79	(18,925)		143,201		22	(156,836)		671,570		(175,760)		814,770
GNMA	81	(3,436)		44,476		—	—		—		(3,436)		44,476
Private-label	3	(9,509)		58,733		15	(63,411)		244,772		(72,920)		303,505
Commercial mortgage-related securities:
FNMA/FHLMC	4	(3,814)		20,338		39	(174,467)		576,911		(178,281)		597,249
GNMA	8	(2,528)		34,612		6	(4,726)		28,080		(7,254)		62,691
Total	947	$	(134,556)	$	1,381,511	238	$	(485,855)	$	1,752,354	$	(620,411)	$	3,133,865

The Corporation reviews the AFS investment securities portfolio on a quarterly basis to monitor its credit exposure. A determination as to whether a security’s decline in fair value is the result of credit risk takes into consideration numerous factors and the relative significance of any single factor can vary by security. Some factors the Corporation may consider in this impairment analysis include the extent to which the security has been in an unrealized loss position, the change in security rating, financial condition and near-term prospects of the issuer, as well as the security and industry specific economic conditions.

Based on the Corporation’s evaluation, management does not believe any unrealized losses at September 30, 2023 represent credit deterioration as these unrealized losses are primarily attributable to changes in interest rates and the current market conditions. The Corporation does not intend to sell, nor does it believe that it will be required to sell, the securities in an unrealized loss position before recovery of their amortized cost basis.

FHLB and Federal Reserve Bank stocks: The Corporation is required to maintain Federal Reserve Bank stock and FHLB stock as a member bank of both the Federal Reserve System and the FHLB, and in amounts as required by these institutions. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other marketable equity securities and their fair value is equal to amortized cost. The Corporation had FHLB stock of $182 million and $209 million at September 30, 2023 and December 31, 2022, respectively. The Corporation had Federal Reserve Bank stock of $87 million at both September 30, 2023 and December 31, 2022. Accrued interest receivable on FHLB stock totaled $3 million at both September 30, 2023 and December 31, 2022. There was approximately $958,000 of accrued interest receivable on Federal Reserve Bank Stock at September 30, 2023 and none at December 31, 2022. Accrued interest receivable on both FHLB stock and Federal Reserve Bank stock is included in interest receivable on the consolidated balance sheets.

19

Equity Securities

Equity securities with readily determinable fair values: The Corporation's portfolio of equity securities with readily determinable fair values is primarily comprised of CRA Qualified Investment mutual funds and other mutual funds. The Corporation had equity securities with readily determinable fair values of $7 million at September 30, 2023 and $6 million at December 31, 2022.

Equity securities without readily determinable fair values: The Corporation's portfolio of equity securities without readily determinable fair values, which primarily consists of Visa Class B restricted shares and an investment in a private SBA loan fund, was carried at $29 million and $19 million at September 30, 2023 and December 31, 2022, respectively.

Note 6 Loans

The period end loan composition was as follows:

($ in thousands)	Sep 30, 2023		Dec 31, 2022
Commercial and industrial	$	10,099,068	$	9,759,454
Commercial real estate — owner occupied	1,054,969		991,722
Commercial and business lending	11,154,037		10,751,176
Commercial real estate — investor	5,218,980		5,080,344
Real estate construction	2,130,719		2,155,222
Commercial real estate lending	7,349,699		7,235,565
Total commercial	18,503,736		17,986,742
Residential mortgage	8,782,645		8,511,550
Auto finance	2,007,164		1,382,073
Home equity	623,650		624,353
Other consumer	275,993		294,851
Total consumer	11,689,451		10,812,828
Total loans	$	30,193,187	$	28,799,569

Accrued interest receivable on loans totaled $136 million at September 30, 2023, and $113 million at December 31, 2022, and is included in interest receivable on the consolidated balance sheets. Interest accrued but not received is reversed against interest income when a loan is placed on nonaccrual. The amount of accrued interest reversed was approximately $347,000 and $1 million for the three and nine months ended September 30, 2023, respectively, and approximately $189,000 and $328,000 for the three and nine months ended September 30, 2022, respectively.

20

The following table presents loans by credit quality indicator by origination year at September 30, 2023:

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		YTD 2023		2022		2021		2020		2019		Prior		Total
Commercial and industrial:
Risk rating:
Pass	$	477	$	2,065,717	$	1,775,767	$	2,516,155	$	1,427,787	$	549,748	$	481,866	$	895,313	$	9,712,353
Special mention	39		26,400		39		39,694		8,731		3,667		—		26,136		104,666
Potential problem	829		72,533		311		51,502		57,611		20,222		4,434		623		207,237
Nonaccrual	14,756		—		13,945		20,299		18,898		21,617		—		53		74,812
Commercial and industrial	$	16,101	$	2,164,649	$	1,790,062	$	2,627,650	$	1,513,027	$	595,254	$	486,300	$	922,126	$	10,099,068
Commercial real estate - owner occupied:
Risk rating:
Pass	$	—	$	17,557	$	133,133	$	182,517	$	196,057	$	104,786	$	142,602	$	229,321	$	1,005,973
Special mention	—		421		—		2,000		7,666		2,446		4,737		—		17,269
Potential problem	—		—		748		1,177		3,334		1,205		1,807		19,520		27,792
Nonaccrual	—		—		—		1,568		2,260		—		—		108		3,936
Commercial real estate - owner occupied	$	—	$	17,978	$	133,882	$	187,262	$	209,317	$	108,436	$	149,146	$	248,950	$	1,054,969
Commercial and business lending:
Risk rating:
Pass	$	477	$	2,083,273	$	1,908,900	$	2,698,672	$	1,623,845	$	654,533	$	624,468	$	1,124,635	$	10,718,325
Special mention	39		26,821		39		41,694		16,396		6,112		4,737		26,136		121,935
Potential problem	829		72,533		1,060		52,679		60,945		21,427		6,242		20,143		235,029
Nonaccrual	14,756		—		13,945		21,868		21,158		21,617		—		161		78,748
Commercial and business lending	$	16,101	$	2,182,627	$	1,923,943	$	2,814,912	$	1,722,344	$	703,689	$	635,446	$	1,171,075	$	11,154,037
Commercial real estate - investor:
Risk rating:
Pass	$	—	$	157,976	$	500,154	$	1,278,072	$	1,181,060	$	687,373	$	459,677	$	634,704	$	4,899,015
Special mention	—		—		9,400		54,103		26,330		—		64,801		5,608		160,243
Potential problem	—		—		6,425		5,842		4,771		69,079		10,903		51,820		148,840
Nonaccrual	—		—		—		—		—		—		—		10,882		10,882
Commercial real estate - investor	$	—	$	157,976	$	515,979	$	1,338,016	$	1,212,162	$	756,452	$	535,381	$	703,014	$	5,218,980
Real estate construction:
Risk rating:
Pass	$	—	$	27,872	$	251,100	$	1,008,428	$	716,123	$	91,982	$	11,970	$	23,141	$	2,130,617
Nonaccrual	—		—		—		—		—		—		—		103		103
Real estate construction	$	—	$	27,872	$	251,100	$	1,008,428	$	716,123	$	91,982	$	11,970	$	23,244	$	2,130,719
Commercial real estate lending:
Risk rating:
Pass	$	—	$	185,848	$	751,254	$	2,286,500	$	1,897,183	$	779,355	$	471,646	$	657,845	$	7,029,632
Special mention	—		—		9,400		54,103		26,330		—		64,801		5,608		160,243
Potential problem	—		—		6,425		5,842		4,771		69,079		10,903		51,820		148,840
Nonaccrual	—		—		—		—		—		—		—		10,985		10,985
Commercial real estate lending	$	—	$	185,848	$	767,080	$	2,346,445	$	1,928,284	$	848,434	$	547,351	$	726,258	$	7,349,699
Total commercial:
Risk rating:
Pass	$	477	$	2,269,121	$	2,660,154	$	4,985,172	$	3,521,028	$	1,433,889	$	1,096,114	$	1,782,480	$	17,747,957
Special mention	39		26,821		9,439		95,797		42,727		6,112		69,538		31,744		282,178
Potential problem	829		72,533		7,485		58,521		65,716		90,506		17,144		71,963		383,869
Nonaccrual	14,756		—		13,945		21,868		21,158		21,617		—		11,146		89,732
Total commercial	$	16,101	$	2,368,474	$	2,691,023	$	5,161,357	$	3,650,628	$	1,552,123	$	1,182,797	$	1,897,334	$	18,503,736

21

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		YTD 2023		2022		2021		2020		2019		Prior		Total
Residential mortgage:
Risk rating:
Pass	$	—	$	—	$	294,499	$	1,725,855	$	2,176,722	$	1,585,071	$	757,087	$	2,176,012	$	8,715,245
Potential problem	—		—		—		80		—		77		347		744		1,247
Nonaccrual	—		—		142		3,098		7,003		7,506		6,742		41,662		66,153
Residential mortgage	$	—	$	—	$	294,640	$	1,729,032	$	2,183,725	$	1,592,654	$	764,176	$	2,218,418	$	8,782,645
Auto finance:
Risk rating:
Pass	$	—	$	—	$	885,528	$	1,031,283	$	82,447	$	204	$	614	$	202	$	2,000,278
Special mention	—		—		601		1,436		316		—		—		—		2,353
Nonaccrual	—		—		452		3,551		527		—		4		—		4,533
Auto finance	$	—	$	—	$	886,581	$	1,036,271	$	83,289	$	204	$	617	$	202	$	2,007,164
Home equity:
Risk rating:
Pass	$	7,318	$	514,431	$	4,986	$	35,751	$	1,671	$	1,450	$	4,703	$	51,693	$	614,685
Special mention	343		102		—		40		73		—		55		542		811
Potential problem	11		—		—		—		—		—		45		192		236
Nonaccrual	832		67		—		68		105		99		373		7,205		7,917
Home equity	$	8,504	$	514,599	$	4,986	$	35,859	$	1,849	$	1,549	$	5,175	$	59,631	$	623,650
Other consumer:
Risk rating:
Pass	$	99	$	193,494	$	5,521	$	3,933	$	2,772	$	1,234	$	514	$	67,749	$	275,217
Special mention	17		520		—		—		16		14		2		2		553
Nonaccrual	81		66		11		1		8		73		11		52		222
Other consumer	$	197	$	194,079	$	5,532	$	3,934	$	2,797	$	1,321	$	527	$	67,803	$	275,993
Total consumer:
Risk rating:
Pass	$	7,417	$	707,925	$	1,190,534	$	2,796,822	$	2,263,612	$	1,587,959	$	762,917	$	2,295,656	$	11,605,425
Special mention	360		621		601		1,476		405		14		57		543		3,717
Potential problem	11		—		—		80		—		77		392		935		1,483
Nonaccrual	913		133		604		6,718		7,644		7,679		7,129		48,919		78,826
Total consumer	$	8,701	$	708,679	$	1,191,739	$	2,805,096	$	2,271,661	$	1,595,728	$	770,495	$	2,346,054	$	11,689,451
Total loans:
Risk rating:
Pass	$	7,894	$	2,977,046	$	3,850,688	$	7,781,993	$	5,784,640	$	3,021,848	$	1,859,031	$	4,078,136	$	29,353,382
Special mention	398		27,442		10,039		97,273		43,132		6,126		69,595		32,288		285,895
Potential problem	841		72,533		7,485		58,600		65,716		90,583		17,536		72,899		385,352
Nonaccrual	15,669		133		14,549		28,585		28,801		29,295		7,129		60,065		168,558
Total loans	$	24,802	$	3,077,153	$	3,882,762	$	7,966,452	$	5,922,289	$	3,147,851	$	1,953,292	$	4,243,388	$	30,193,187

(a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination.

22

The following table presents loans by credit quality indicator by origination year at December 31, 2022:

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		2022		2021		2020		2019		2018		Prior		Total
Commercial and industrial:
Risk rating:
Pass	$	1,423	$	1,938,777	$	3,245,546	$	2,367,008	$	567,833	$	573,120	$	330,642	$	432,906	$	9,455,833
Special mention	—		93,209		3,411		23,607		—		—		19		32,497		152,744
Potential problem	447		24,549		41,400		4,193		21,887		38,169		218		6,133		136,549
Nonaccrual	3,926		—		5,210		—		9,119		—		—		—		14,329
Commercial and industrial	$	5,796	$	2,056,535	$	3,295,567	$	2,394,809	$	598,839	$	611,289	$	330,879	$	471,535	$	9,759,454
Commercial real estate - owner occupied:
Risk rating:
Pass	$	—	$	12,447	$	211,645	$	225,627	$	163,965	$	160,370	$	73,487	$	97,420	$	944,961
Special mention	—		—		—		—		1,136		1,491		9,713		—		12,339
Potential problem	—		1,325		1,238		11,141		5,523		10,769		370		4,055		34,422
Commercial real estate - owner occupied	$	—	$	13,772	$	212,883	$	236,769	$	170,624	$	172,630	$	83,570	$	101,475	$	991,722
Commercial and business lending:
Risk rating:
Pass	$	1,423	$	1,951,224	$	3,457,191	$	2,592,636	$	731,798	$	733,490	$	404,129	$	530,326	$	10,400,794
Special mention	—		93,209		3,411		23,607		1,136		1,491		9,732		32,497		165,083
Potential problem	447		25,874		42,638		15,335		27,410		48,938		589		10,188		170,971
Nonaccrual	3,926		—		5,210		—		9,119		—		—		—		14,329
Commercial and business lending	$	5,796	$	2,070,307	$	3,508,450	$	2,631,578	$	769,463	$	783,919	$	414,449	$	573,010	$	10,751,176
Commercial real estate - investor:
Risk rating:
Pass	$	38,412	$	106,280	$	1,633,094	$	1,419,000	$	683,121	$	530,444	$	262,858	$	210,299	$	4,845,096
Special mention	—		—		61,968		24,149		7,361		9,400		—		10,455		113,333
Potential problem	—		—		16,147		21,303		27,635		1,333		19,017		7,099		92,535
Nonaccrual	—		—		2,177		25,668		—		—		—		1,535		29,380
Commercial real estate - investor	$	38,412	$	106,280	$	1,713,387	$	1,490,120	$	718,117	$	541,177	$	281,875	$	229,387	$	5,080,344
Real estate construction:
Risk rating:
Pass	$	—	$	29,892	$	900,593	$	913,107	$	241,230	$	12,062	$	2,226	$	9,775	$	2,108,885
Special mention	—		—		—		—		12,174		33,087		—		—		45,261
Potential problem	—		—		—		—		970		—		—		—		970
Nonaccrual	—		—		—		—		—		—		—		105		105
Real estate construction	$	—	$	29,892	$	900,593	$	913,107	$	254,374	$	45,149	$	2,226	$	9,880	$	2,155,222
Commercial real estate lending:
Risk rating:
Pass	$	38,412	$	136,173	$	2,533,687	$	2,332,107	$	924,351	$	542,505	$	265,083	$	220,073	$	6,953,981
Special mention	—		—		61,968		24,149		19,535		42,487		—		10,455		158,595
Potential problem	—		—		16,147		21,303		28,605		1,333		19,017		7,099		93,505
Nonaccrual	—		—		2,177		25,668		—		—		—		1,640		29,485
Commercial real estate lending	$	38,412	$	136,173	$	2,613,980	$	2,403,227	$	972,492	$	586,326	$	284,101	$	239,267	$	7,235,565

23

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		2022		2021		2020		2019		2018		Prior		Total
Total commercial:
Risk rating:
Pass	$	39,835	$	2,087,396	$	5,990,879	$	4,924,743	$	1,656,149	$	1,275,996	$	669,213	$	750,399	$	17,354,774
Special mention	—		93,209		65,379		47,756		20,671		43,978		9,732		42,952		323,677
Potential problem	447		25,874		58,785		36,638		56,016		50,271		19,606		17,287		264,476
Nonaccrual	3,926		—		7,387		25,668		9,119		—		—		1,640		43,814
Total commercial	$	44,208	$	2,206,480	$	6,122,430	$	5,034,805	$	1,741,955	$	1,370,245	$	698,550	$	812,278	$	17,986,742
Residential mortgage:
Risk rating:
Pass	$	—	$	—	$	1,410,566	$	2,184,125	$	1,716,663	$	817,164	$	370,724	$	1,951,406	$	8,450,648
Special mention	—		—		—		284		96		—		—		63		444
Potential problem	—		—		455		71		—		738		29		685		1,978
Nonaccrual	—		—		8,506		3,851		6,219		3,744		5,014		31,145		58,480
Residential mortgage	$	—	$	—	$	1,419,527	$	2,188,332	$	1,722,979	$	821,645	$	375,768	$	1,983,299	$	8,511,550
Auto finance:
Risk rating:
Pass	$	—	$	—	$	1,271,205	$	106,102	$	333	$	1,267	$	446	$	61	$	1,379,414
Special mention	—		—		1,052		118		—		—		—		—		1,170
Nonaccrual	—		—		1,149		331		—		9		—		—		1,490
Auto finance	$	—	$	—	$	1,273,406	$	106,551	$	333	$	1,276	$	446	$	61	$	1,382,073
Home equity:
Risk rating:
Pass	$	7,254	$	508,212	$	31,389	$	6,508	$	2,112	$	6,197	$	6,966	$	54,827	$	616,211
Special mention	47		102		—		—		—		—		47		310		458
Potential problem	—		15		—		—		—		34		2		146		197
Nonaccrual	1,590		—		306		102		131		307		319		6,322		7,487
Home equity	$	8,891	$	508,329	$	31,695	$	6,610	$	2,243	$	6,538	$	7,333	$	61,605	$	624,353
Other consumer:
Risk rating:
Pass	$	64	$	199,942	$	7,429	$	5,256	$	2,468	$	1,238	$	174	$	77,611	$	294,117
Special mention	6		490		11		—		5		5		—		25		537
Nonaccrual	78		56		11		21		10		56		10		34		197
Other consumer	$	147	$	200,488	$	7,452	$	5,276	$	2,482	$	1,300	$	184	$	77,670	$	294,851
Total consumer:
Risk rating:
Pass	$	7,318	$	708,154	$	2,720,589	$	2,301,991	$	1,721,576	$	825,866	$	378,310	$	2,083,904	$	10,740,390
Special mention	52		592		1,063		403		101		5		47		398		2,609
Potential problem	—		15		455		71		—		772		31		831		2,175
Nonaccrual	1,668		56		9,973		4,304		6,360		4,116		5,343		37,501		67,654
Total consumer	$	9,038	$	708,817	$	2,732,080	$	2,306,769	$	1,728,037	$	830,759	$	383,731	$	2,122,635	$	10,812,828
Total loans:
Risk rating:
Pass	$	47,152	$	2,795,551	$	8,711,468	$	7,226,734	$	3,377,725	$	2,101,861	$	1,047,522	$	2,834,303	$	28,095,164
Special mention	52		93,801		66,443		48,159		20,772		43,983		9,778		43,350		326,286
Potential problem	447		25,889		59,240		36,709		56,016		51,043		19,637		18,118		266,651
Nonaccrual	5,595		56		17,360		29,972		15,479		4,116		5,343		39,141		111,467
Total loans	$	53,246	$	2,915,297	$	8,854,510	$	7,341,574	$	3,469,992	$	2,201,004	$	1,082,280	$	2,934,912	$	28,799,569

(a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination.

24

The following table presents gross charge offs by origination year at September 30, 2023:

			Gross Charge Offs by Origination Year
($ in thousands)	Rev Loans Amortized Cost Basis		YTD 2023		2022		2021		2020		2019		Prior		Total
Commercial and industrial	$	2,760	$	401	$	5,695	$	13,264	$	5,900	$	—	$	3,795	$	31,816
Commercial and business lending	2,760		401		5,695		13,264		5,900		—		3,795		31,816
Commercial real estate-investor	—		—		—		—		—		—		242		242
Real estate construction	—		—		—		—		—		—		25		25
Commercial real estate lending	—		—		—		—		—		—		266		266
Total commercial	2,760		401		5,695		13,264		5,900		—		4,062		32,082
Residential mortgage	—		—		128		22		148		7		410		714
Auto finance	—		254		3,355		442		—		5		—		4,056
Home equity	12		—		43		45		—		22		147		269
Other consumer	3,351		—		149		124		29		12		106		3,769
Total consumer	3,363		254		3,674		633		177		45		662		8,809
Total gross charge offs	$	6,124	$	655	$	9,369	$	13,897	$	6,077	$	45	$	4,724	$	40,891

Factors that are important to managing overall credit quality are sound loan underwriting and administration, systematic monitoring of existing loans and commitments, effective loan review on an ongoing basis, early identification of potential problems, and appropriate policies for ACLL, nonaccrual loans, and charge offs.

For commercial loans, management has determined the pass credit quality indicator to include credits exhibiting acceptable financial statements, cash flow, and leverage. If any risk exists, it is mitigated by the loan structure, collateral, monitoring, or control. For consumer loans, performing loans include credits performing in accordance with the original contractual terms.

Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Special mention credits have potential weaknesses that warrant specific attention from management. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the credit. Accruing loan modifications could be pass or special mention, depending on the risk rating on the loan. Potential problem loans are considered inadequately protected by the current net worth and paying capacity of the obligor or the collateral pledged. These loans generally have a well-defined weakness, or weaknesses, which may jeopardize liquidation of the debt, and are characterized by the distinct possibility the Corporation will sustain some loss if the deficiencies are not corrected. Management has determined commercial loan relationships in nonaccrual status, and commercial and consumer loan relationships with their terms restructured in a loan modification, meet the criteria to be individually evaluated. Commercial loans classified as special mention, potential problem, and nonaccrual are reviewed at a minimum on a quarterly basis, while pass credits, which are performing rated credits, are generally reviewed on an annual basis or more frequently if the loan renewal is less than one year or if otherwise warranted.

The following table presents loans by past due status at September 30, 2023:

	Accruing
($ in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90+ Days Past Due		Nonaccrual(a)(b)		Total
Commercial and industrial	$	10,022,308	$	671	$	835	$	441	$	74,812	$	10,099,068
Commercial real estate - owner occupied	1,049,156		1,877		—		—		3,936		1,054,969
Commercial and business lending	11,071,464		2,548		835		441		78,748		11,154,037
Commercial real estate - investor	5,197,977		10,120		1		—		10,882		5,218,980
Real estate construction	2,130,606		10		—		—		103		2,130,719
Commercial real estate lending	7,328,583		10,130		1		—		10,985		7,349,699
Total commercial	18,400,047		12,678		836		441		89,732		18,503,736
Residential mortgage	8,704,840		11,652		—		—		66,153		8,782,645
Auto finance	1,985,943		14,335		2,353		—		4,533		2,007,164
Home equity	612,045		2,876		811		—		7,917		623,650
Other consumer	272,175		1,255		625		1,715		222		275,993
Total consumer	11,575,003		30,118		3,789		1,715		78,826		11,689,451
Total loans	$	29,975,051	$	42,797	$	4,626	$	2,156	$	168,558	$	30,193,187

(a) Of the total nonaccrual loans, $114 million, or 68%, were current with respect to payment at September 30, 2023.

(b) No interest income was recognized on nonaccrual loans for the three and nine months ended September 30, 2023. In addition, there were $65 million of nonaccrual loans for which there was no related ACLL at September 30, 2023.

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The following table presents loans by past due status at December 31, 2022:

	Accruing
($ in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90+ Days  Past Due		Nonaccrual(a)(b)		Total
Commercial and industrial	$	9,738,561	$	716	$	5,566	$	282	$	14,329	$	9,759,454
Commercial real estate - owner occupied	991,493		218		12		—		—		991,722
Commercial and business lending	10,730,053		934		5,578		282		14,329		10,751,176
Commercial real estate - investor	5,049,897		1,067		—		—		29,380		5,080,344
Real estate construction	2,155,077		39		—		—		105		2,155,222
Commercial real estate lending	7,204,975		1,105		—		—		29,485		7,235,565
Total commercial	17,935,028		2,040		5,578		282		43,814		17,986,742
Residential mortgage	8,443,072		9,811		63		124		58,480		8,511,550
Auto finance	1,371,176		8,238		1,170		—		1,490		1,382,073
Home equity	611,259		5,149		458		—		7,487		624,353
Other consumer	291,722		1,018		592		1,322		197		294,851
Total consumer	10,717,229		24,216		2,283		1,446		67,654		10,812,828
Total loans	$	28,652,257	$	26,256	$	7,861	$	1,728	$	111,467	$	28,799,569

(a) Of the total nonaccrual loans, $64 million, or 58%, were current with respect to payment at December 31, 2022.

(b) No interest income was recognized on nonaccrual loans for the year ended December 31, 2022. In addition, there were $11 million of nonaccrual loans for which there was no related ACLL at December 31, 2022.

Loan Modifications and Troubled Debt Restructurings

Under ASU 2022-02, effective January 1, 2023, loan modifications are reported if concessions have been granted to borrowers that are experiencing financial difficulty. Information on these loan modifications originated after the effective date is presented according to the new accounting guidance. Reporting periods prior to the adoption of ASU 2022-02 present information on TDRs under the previous disclosure requirements.

The following tables show the composition of loan modifications made to borrowers experiencing financial difficulty by the loan portfolio and type of concessions granted during the nine months ended September 30, 2023. Each of the types of concessions granted comprised less than 1% of their respective classes of loan portfolios at September 30, 2023.

	Interest Rate Concession
($ in thousands)	Amortized Cost
Commercial and industrial	$	234
Auto	169
Home equity	77
Other consumer	1,243
Total loans modified	$	1,724

	Term Extension
($ in thousands)	Amortized Cost
Residential mortgage	$	208
Home equity	26
Total loans modified	$	234

	Combination - Interest Rate Concession and Term Extension
($ in thousands)	Amortized Cost
Residential mortgage	$	830
Home equity	262
Total loans modified	$	1,092

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The following tables summarize, by loan portfolio, the financial effect of the Corporation's loan modifications on the modified loans as of September 30, 2023:

Interest Rate Concession
Loan Type	Financial Effect, Weighted Average Contractual Interest Rate (Decrease) Increase
Commercial and industrial	(18)	%
Auto	(4)	%
Home equity	—	%
Other consumer	(21)	%
Weighted average of total loans modified	(10)	%

Term Extension
Loan Type	Financial Effect, Weighted Average Term Increase(a)
Residential mortgage	26 months
Home equity	78 months
Weighted average of total loans modified	32 months

(a) During the nine months ended September 30, 2023, term extensions changed the weighted average term on modified loans from 297 to 328 months.

The Corporation closely monitors the performance of loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table depicts the performance of loans that have been modified in the nine months ended September 30, 2023:

	Payment Status (Amortized Cost Basis)
($ in thousands)	Current		30-89 Days Past Due		90+ Days Past Due		Nonaccrual
Commercial and industrial	$	234	$	—	$	—	$	—
Residential mortgage	81		126		—		832
Auto	169		—		—		—
Home equity	236		—		—		130
Other consumer	1,243		—		—		—
Total loans modified	$	1,963	$	126	$	—	$	961

The following table provides the amortized cost of loan modifications by loan portfolio and type of concession that were modified in the previous nine months and subsequently had a payment default, as of September 30, 2023:

	Amortized Cost of Loan Modifications that Subsequently Defaulted
($ in thousands)	Interest Rate Concession		Term Extension		Combination Interest Rate Reduction and Term Extension
Residential mortgage	$	—	$	208	$	206
Home equity	—		—		18
Total loans modified	$	—	$	208	$	224

The following table presents nonaccrual and performing restructured loans by loan portfolio at December 31, 2022:

($ in thousands)	Performing Restructured Loans		Nonaccrual Restructured Loans(a)
Commercial and industrial	$	12,453	$	—
Commercial real estate — owner occupied	316		—
Commercial real estate — investor	128		2,074
Real estate construction	195		9
Residential mortgage	16,829		17,117
Home equity	2,148		927
Other consumer	798		—
Total restructured loans	$	32,868	$	20,127

(a) Nonaccrual restructured loans have been included within nonaccrual loans.

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The following table provides the number of loans modified in a TDR by loan portfolio, the recorded investment, and unpaid principal balance for the nine months ended September 30, 2022:

($ in thousands)	Number of Loans	Recorded Investment(a)		Unpaid Principal Balance(b)
Commercial and industrial	2	$	265	$	265
Commercial real estate — investor	1	547		573
Residential mortgage	44	9,641		9,833
Home equity	12	390		412
Total loans modified	59	$	10,844	$	11,083

(a) Represents post-modification outstanding recorded investment.
(b) Represents pre-modification outstanding recorded investment.

During the nine months ended September 30, 2022, restructured loan modifications of commercial loans primarily included maturity date extensions and payment schedule modifications. Restructured loan modifications of consumer loans for the nine months ended September 30, 2022 primarily included maturity date extensions, interest rate concessions, non-reaffirmed Chapter 7 bankruptcies, or a combination of these concessions.

The following table provides the number of loans modified during the previous twelve months which subsequently defaulted during the nine months ended September 30, 2022, and the recorded investment in these restructured loans at the time of default as of September 30, 2022:

	Nine Months Ended September 30, 2022
($ in thousands)	Number of Loans	Recorded Investment
Residential mortgage	4	$	1,178

The nature and extent of the impairment of modified loans, including those which have experienced a subsequent payment default, are considered in the determination of an appropriate level of the ACLL.

Allowance for Credit Losses on Loans

The ACLL is comprised of the allowance for loan losses and the allowance for unfunded commitments. The level of the ACLL represents management’s estimate of an amount appropriate to provide for expected lifetime credit losses in the loan portfolio at the balance sheet date. The expected lifetime credit losses are the product of multiplying the Corporation's estimates of probability of default, loss given default, and the individual loan level exposure at default on an undiscounted basis. A main factor in the determination of the ACLL is the economic forecast. The forecast the Corporation used for September 30, 2023 was the Moody's baseline scenario from August 2023, which was reviewed against the September 2023 baseline scenario with no material updates made, over a 2 year reasonable and supportable period with straight-line reversion to the historical losses over the second year of the period. The allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb expected lifetime losses related to unfunded credit facilities (including unfunded loan commitments and letters of credit). See Note 11 for additional information on the change in the allowance for unfunded commitments.

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The following table presents a summary of the changes in the ACLL by portfolio segment for the nine months ended September 30, 2023:

($ in thousands)	Dec 31, 2022		Charge offs		Recoveries		Net Charge offs		Provision for credit losses		Sep 30, 2023		ACLL / Loans
Allowance for loan losses
Commercial and industrial	$	119,076	$	(31,816)	$	2,322	$	(29,494)	$	34,710	$	124,292
Commercial real estate — owner occupied	9,475		—		8		8		1,976		11,459
Commercial and business lending	128,551		(31,816)		2,329		(29,487)		36,686		135,751
Commercial real estate — investor	54,398		(242)		2,789		2,547		10,520		67,466
Real estate construction	45,589		(25)		42		18		6,128		51,734
Commercial real estate lending	99,986		(266)		2,831		2,565		16,648		119,200
Total commercial	228,538		(32,082)		5,161		(26,921)		53,334		254,951
Residential mortgage	38,298		(714)		357		(358)		2,496		40,437
Auto finance	19,619		(4,056)		783		(3,273)		6,654		23,000
Home equity	14,875		(269)		921		652		(413)		15,114
Other consumer	11,390		(3,769)		744		(3,025)		3,928		12,293
Total consumer	84,182		(8,809)		2,805		(6,004)		12,666		90,844
Total loans	$	312,720	$	(40,891)	$	7,965	$	(32,925)	$	66,000	$	345,795
Allowance for unfunded commitments
Commercial and industrial	$	12,997	$	—	$	—	$	—	$	(2,365)	$	10,632
Commercial real estate — owner occupied	103		—		—		—		15		119
Commercial and business lending	13,101		—		—		—		(2,350)		10,751
Commercial real estate — investor	710		—		—		—		39		749
Real estate construction	20,583		—		—		—		(1,000)		19,583
Commercial real estate lending	21,292		—		—		—		(961)		20,331
Total commercial	34,393		—		—		—		(3,311)		31,082
Home equity	2,699		—		—		—		(17)		2,682
Other consumer	1,683		—		—		—		(672)		1,011
Total consumer	4,382		—		—		—		(689)		3,693
Total loans	$	38,776	$	—	$	—	$	—	$	(4,000)	$	34,776
Allowance for credit losses on loans
Commercial and industrial	$	132,073	$	(31,816)	$	2,322	$	(29,494)	$	32,345	$	134,924	1.34	%
Commercial real estate — owner occupied	9,579		—		8		8		1,991		11,578		1.10	%
Commercial and business lending	141,652		(31,816)		2,329		(29,487)		34,336		146,502		1.31	%
Commercial real estate — investor	55,108		(242)		2,789		2,547		10,560		68,214		1.31	%
Real estate construction	66,171		(25)		42		18		5,128		71,317		3.35	%
Commercial real estate lending	121,279		(266)		2,831		2,565		15,687		139,531		1.90	%
Total commercial	262,931		(32,082)		5,161		(26,921)		50,023		286,033		1.55	%
Residential mortgage	38,298		(714)		357		(358)		2,496		40,437		0.46	%
Auto finance	19,619		(4,056)		783		(3,273)		6,654		23,000		1.15	%
Home equity	17,574		(269)		921		652		(430)		17,797		2.85	%
Other consumer	13,073		(3,769)		744		(3,025)		3,256		13,304		4.82	%
Total consumer	88,565		(8,809)		2,805		(6,004)		11,977		94,538		0.81	%
Total loans	$	351,496	$	(40,891)	$	7,965	$	(32,925)	$	62,000	$	380,571	1.26	%

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The following table presents a summary of the changes in the ACLL by portfolio segment for the year ended December 31, 2022:

($ in thousands)	Dec 31, 2021		Charge offs		Recoveries		Net Charge offs		Provision for credit losses		Dec 31, 2022		ACLL / Loans
Allowance for loan losses
Commercial and industrial	$	89,857	$	(4,491)	$	5,282	$	791	$	28,428	$	119,076
Commercial real estate — owner occupied	11,473		—		13		13		(2,011)		9,475
Commercial and business lending	101,330		(4,491)		5,295		804		26,418		128,551
Commercial real estate — investor	72,803		(50)		50		—		(18,405)		54,398
Real estate construction	37,643		(48)		106		58		7,887		45,589
Commercial real estate lending	110,446		(98)		156		58		(10,518)		99,986
Total commercial	211,776		(4,588)		5,451		862		15,900		228,538
Residential mortgage	40,787		(567)		908		341		(2,830)		38,298
Auto finance	1,999		(1,041)		98		(943)		18,563		19,619
Home equity	14,011		(587)		1,385		798		66		14,875
Other consumer	11,441		(3,363)		1,010		(2,353)		2,301		11,390
Total consumer	68,239		(5,558)		3,401		(2,157)		18,100		84,182
Total loans	$	280,015	$	(10,146)	$	8,852	$	(1,294)	$	34,000	$	312,720
Allowance for unfunded commitments
Commercial and industrial	$	18,459	$	—	$	—	$	—	$	(5,462)	$	12,997
Commercial real estate — owner occupied	208		—		—		—		(105)		103
Commercial and business lending	18,667		—		—		—		(5,566)		13,101
Commercial real estate — investor	936		—		—		—		(226)		710
Real estate construction	15,586		—		—		—		4,997		20,583
Commercial real estate lending	16,522		—		—		—		4,770		21,292
Total commercial	35,189		—		—		—		(796)		34,393
Home equity	2,592		—		—		—		107		2,699
Other consumer	1,995		—		—		—		(311)		1,683
Total consumer	4,587		—		—		—		(204)		4,382
Total loans	$	39,776	$	—	$	—	$	—	$	(1,000)	$	38,776
Allowance for credit losses on loans
Commercial and industrial	$	108,316	$	(4,491)	$	5,282	$	791	$	22,967	$	132,073	1.35	%
Commercial real estate — owner occupied	11,681		—		13		13		(2,115)		9,579		0.97	%
Commercial and business lending	119,997		(4,491)		5,295		804		20,852		141,652		1.32	%
Commercial real estate — investor	73,739		(50)		50		—		(18,631)		55,108		1.08	%
Real estate construction	53,229		(48)		106		58		12,884		66,171		3.07	%
Commercial real estate lending	126,968		(98)		156		58		(5,748)		121,279		1.68	%
Total commercial	246,965		(4,588)		5,451		862		15,104		262,931		1.46	%
Residential mortgage	40,787		(567)		908		341		(2,830)		38,298		0.45	%
Auto finance	1,999		(1,041)		98		(943)		18,563		19,619		1.42	%
Home equity	16,603		(587)		1,385		798		173		17,574		2.81	%
Other consumer	13,436		(3,363)		1,010		(2,353)		1,990		13,073		4.43	%
Total consumer	72,825		(5,558)		3,401		(2,157)		17,896		88,565		0.82	%
Total loans	$	319,791	$	(10,146)	$	8,852	$	(1,294)	$	33,000	$	351,496	1.22	%

Note 7 Goodwill and Other Intangible Assets

Goodwill

Goodwill is not amortized but is instead subject to impairment tests on at least an annual basis, and more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount.

The Corporation conducted its most recent annual impairment testing in May 2023, utilizing a qualitative assessment. Factors that management considered in this assessment included macroeconomic conditions, industry and market considerations, overall financial performance of the Corporation and each reporting unit (both current and projected), changes in management strategy, and changes in the composition or carrying amount of net assets. In addition, management considered the changes in both the Corporation's common stock price and in the KBW Nasdaq Regional Banking Index (KRX), as well as the Corporation's earnings per common share trend over the past year. Based on these assessments, management concluded that it is

30

more likely than not that the estimated fair value exceeded the carrying value (including goodwill) for each reporting unit. Therefore, a step one quantitative analysis was not required. There have been no events since the May 2023 impairment test that have changed the Corporation's impairment assessment conclusion. There were no impairment charges recorded in 2022 or the first nine months of 2023.

The Corporation had goodwill of $1.1 billion at both September 30, 2023 and December 31, 2022.

Core Deposit Intangibles

The Corporation has CDIs which are amortized. Changes in the gross carrying amount, accumulated amortization, and net book value for CDIs were as follows:

($ in thousands)	Nine Months Ended September 30, 2023		Year Ended Dec 31, 2022
Core deposit intangibles
Gross carrying amount at the beginning of period	$	88,109	$	88,109
Accumulated amortization	(45,435)		(38,827)
Net book value	$	42,674	$	49,282
Amortization during the period	$	6,608	$	8,811

Mortgage Servicing Rights

The Corporation sells residential mortgage loans in the secondary market and typically retains the right to service the loans sold. MSRs are not traded in active markets. As a result, a cash flow model is used to determine fair value. Key assumptions and estimates, projected prepayment speeds, assumed servicing costs, ancillary income, costs to service delinquent loans, costs of foreclosure, and discount rates with option-adjusted spreads, are used in measuring the fair value of the MSRs asset. These assumptions are considered significant unobservable inputs. See Note 11 for a discussion of the recourse provisions on sold residential mortgage loans. See Note 12 which further discusses fair value measurement relative to the MSRs asset.

A summary of changes in the balance of the MSRs asset under the fair value measurement method for the nine months ended September 30, 2023 and the year ended December 31, 2022 is as follows:

($ in thousands)	Nine Months Ended September 30, 2023			Year Ended Dec 31, 2022
Mortgage servicing rights
Mortgage servicing rights at beginning of period	$	77,351		$	54,862
Cumulative effect of accounting methodology change	N/A			2,296
Balance at beginning of period, adjusted	$	77,351		$	57,158
Additions	2,477			7,279
Paydowns	(5,354)			(9,350)
Valuation:
Change in fair value model assumptions	8,338			5,715
Changes in fair value of asset	6,320			16,549
Mortgage servicing rights at end of period	$	89,131		$	77,351
Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)	$	6,451,969		$	6,711,820
Mortgage servicing rights to servicing portfolio	1.38		%	1.15		%

The projections of amortization expense for CDIs and decay for MSRs are based on existing asset balances, the current interest rate environment, and prepayment speeds as of September 30, 2023. The actual expense the Corporation recognizes in any given period may be significantly different depending upon acquisition or sale activities, changes in interest rates, prepayment speeds, market conditions, regulatory requirements, and events or circumstances that indicate the carrying amount of an asset may not be recoverable. The following table shows the estimated future amortization expense for CDIs and decay for MSRs:

($ in thousands)	Core Deposit Intangibles		Mortgage Servicing Rights
Three months ended December 31, 2023	$	2,203	$	3,630
2024	8,811		13,789
2025	8,811		12,373
2026	8,811		11,111
2027	8,811		9,768
2028	3,485		8,641
Beyond 2028	1,742		29,819
Total estimated amortization expense and MSRs decay	$	42,674	$	89,131

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Note 8 Short and Long-Term Funding

The following table presents the components of short-term funding (funding with original contractual maturities of one year or less), and long-term funding (funding with original contractual maturities greater than one year):

($ in thousands)	Sep 30, 2023		Dec 31, 2022
Short-term funding
Federal funds purchased	$	300,000	$	344,170
Securities sold under agreements to repurchase	151,644		240,969
Federal funds purchased and securities sold under agreements to repurchase	451,644		585,139
Commercial paper	—		20,798
Total short-term funding	$	451,644	$	605,937
Long-term funding
Corporation subordinated notes, at par	$	550,000	$	250,000
Discount and capitalized costs	(8,027)		(544)
Subordinated debt fair value hedge(a)	(12,919)		(1,855)
Finance leases	405		469
Total long-term funding	$	529,459	$	248,071
Total short and long-term funding, excluding FHLB advances	$	981,103	$	854,007
FHLB advances
Short-term FHLB advances	$	2,545,000	$	3,125,000
Long-term FHLB advances	1,209,938		1,209,170
FHLB advances fair value hedge(a)	(21,897)		(14,308)
Total FHLB advances	$	3,733,041	$	4,319,861
Total short and long-term funding	$	4,714,145	$	5,173,869

(a) For additional information on the fair value hedges, see Note 9.

Securities Sold Under Agreements to Repurchase

The Corporation enters into agreements under which it sells securities subject to an obligation to repurchase the same or similar securities. Under these arrangements, the Corporation may transfer legal control over the assets but still retain effective control through an agreement that both entitles and obligates the Corporation to repurchase the assets. The obligation to repurchase the securities is reflected as a liability on the Corporation’s consolidated balance sheets, while the securities underlying the repurchase agreements remain in the respective investment securities asset accounts (i.e., there is no offsetting or netting of the investment securities assets with the repurchase agreement liabilities).

The Corporation utilizes repurchase agreements to facilitate the needs of its customers. The fair value of securities pledged to secure repurchase agreements may decline. At September 30, 2023, the Corporation had pledged securities valued at 164% of the gross outstanding balance of repurchase agreements to manage this risk.

The remaining contractual maturity of the securities sold under agreements to repurchase on the consolidated balance sheets as of September 30, 2023 and December 31, 2022 are presented in the following table:

	Overnight and Continuous
($ in thousands)	Sep 30, 2023		Dec 31, 2022
Repurchase agreements
Agency mortgage-related securities	$	151,644	$	240,969

Long-Term Funding

Subordinated Notes 

In November 2014, the Corporation issued $250 million of 10-year subordinated notes, due January 2025, and callable October 2024. The subordinated notes have a fixed coupon interest rate of 4.25% and were issued at a discount.

In February 2023, the Corporation issued $300 million of 10-year subordinated notes, due March 1, 2033 and redeemable (i) on the reset date of March 1, 2028 and on any interest payment date thereafter, (ii) at any time on or after the three month period prior to the maturity date, and (iii) upon the occurrence of a Regulatory Capital Treatment Event (as defined in the Global Note). The subordinated notes have a fixed coupon interest rate of 6.625% until the reset date, after which the rate will be equal to the Five-Year U.S. Treasury Rate as of the reset date plus 2.812% per annum. The notes were issued at a discount.

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Finance Leases

Finance leases are used in conjunction with branch operations. See Note 16 for additional disclosure regarding the Corporation’s leases.

Note 9 Derivative and Hedging Activities

The Corporation is exposed to certain risk arising from both its business operations and economic conditions. The Corporation principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Corporation manages economic risks, including interest rate, liquidity, foreign currency, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Corporation enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the values of which are determined by interest rates and/or foreign currency exchange rates. The Corporation's derivative financial instruments are used to manage differences in the amount, timing, and duration of the Corporation's known or expected cash receipts and its known or expected cash payments principally related to the Corporation's assets.

The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amounts to be exchanged between the counterparties. The Corporation is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. To mitigate the counterparty risk, contracts generally contain language outlining collateral pledging requirements for each counterparty. For non-centrally cleared derivatives, collateral must be posted when the market value exceeds certain mutually agreed upon threshold limits. Securities and cash are often pledged as collateral. The Corporation pledged $95 million and $92 million of investment securities as collateral at September 30, 2023 and December 31, 2022, respectively. Cash is often pledged as collateral for derivatives that are not centrally cleared. The Corporation had no required cash collateral at September 30, 2023, compared to $3 million at December 31, 2022.

To qualify for hedge accounting, a hedging relationship must be highly effective at mitigating the risk associated with the exposure being hedged. The Corporation performs effectiveness assessments of its derivative financial instruments prospectively at inception and both prospectively and retrospectively quarterly thereafter. The initial prospective assessment is performed on a quantitative basis unless the hedging relationship meets certain conditions, and subsequent assessments are performed on a quantitative basis unless certain conditions are met where a qualitative basis may be used. If it is determined that a derivative financial instrument is not highly effective at hedging the designated exposure, hedge accounting is discontinued.

Federal regulations require the Corporation to clear all compound SOFR interest rate swaps through a clearing house, if possible. For derivatives cleared through central clearing houses, the variation margin payments are legally characterized as daily settlements of the derivative rather than collateral. The Corporation's clearing agent for interest rate derivative contracts that are centrally cleared through the Chicago Mercantile Exchange and the London Clearing House settles the variation margin daily. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. Depending on the net position, the fair value is reported in other assets or accrued expenses and other liabilities on the consolidated balance sheets. The daily settlement of the derivative exposure does not change or reset the contractual terms of the instrument.

Fair Value Hedges of Interest Rate Risk

The Corporation is exposed to changes in the fair value of its fixed-rate debt due to changes in benchmark interest rates. The Corporation uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rates. Interest rate swaps designated as fair value hedges involve receiving payment of fixed-rate amounts from a counterparty in exchange for the Corporation paying variable-rate payments over the life of the agreements without the exchange of the underlying notional amount.

For derivatives designated and that qualify as fair value hedges, as allowed under U.S. GAAP, the Corporation applied the "shortcut" method of accounting, which permits the assumption of perfect effectiveness. The gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in interest expense. These items, along with the net interest from the derivative, are reported in the same income statement line as the fixed-rate debt expense.

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Fair Value Hedges of Foreign Currency Exchange Rate Risk

The Corporation is exposed to changes in the fair value of its foreign currency denominated loans due to changes in foreign currency exchange rates. The Corporation uses foreign currency exchange forward contracts to manage its exposure to changes in fair value on these foreign currency denominated loans.

To assess effectiveness of the foreign currency exchange forward contracts, the Corporation has elected to utilize the critical terms match method. Under the critical terms match method, if the hedging relationship meets certain criteria, it allows the Corporation to assume that the hedging relationship is perfectly effective, eliminating the quantitative aspect of assessing effectiveness. The gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in capital markets, net.

Cash Flow Hedges of Interest Rate Risk

The Corporation is exposed to variability in cash flows on its floating rate assets due to changes in benchmark interest rates. The Corporation uses interest rate swaps to hedge certain forecasted transactions for the variability in cash flows attributable to the contractually specified interest rate in order to add stability to net interest income and to manage its exposure to interest rate movements. Interest rate swaps designated as cash flow hedges involve receiving fixed-rate amounts from a counterparty in exchange for the Corporation making variable-rate payments over the life of the agreements without the exchange of the underlying notional amount. These items, along with the net interest from the derivative, are reported in the same income statement line as the interest income from the floating-rate assets.

To assess effectiveness of interest rate swaps, the Corporation performs a quantitative analysis using a period by period regression method. When the relationship between the hedged item and hedging instrument is highly effective at achieving offsetting changes in cash flows attributable to the hedged risk, changes in the fair value of these cash flow hedges are recorded in accumulated other comprehensive income (loss) and are subsequently reclassified to interest income as interest payments are made on such variable rate loans.

Derivatives to Accommodate Customer Needs

The Corporation facilitates customer borrowing activity by entering into various derivative contracts which are designated as free standing derivative contracts. Free standing derivative products are entered into primarily for the benefit of commercial customers seeking to manage their exposures to interest rate risk and foreign currency. These derivative contracts are not designated against specific assets and liabilities on the consolidated balance sheets or forecasted transactions and, therefore, do not qualify for hedge accounting treatment. Such derivative contracts are carried at fair value in other assets and accrued expenses and other liabilities on the consolidated balance sheets with changes in the fair value recorded as a component of capital markets, net, and typically include interest rate-related instruments (swaps and caps) and foreign currency exchange forwards. See Note 10 for additional information and disclosures on balance sheet offsetting.

Interest rate-related and other instruments: The Corporation provides interest rate risk management services to commercial customers, primarily interest rate swaps and caps. The Corporation’s market risk from unfavorable movements in interest rates related to these derivative contracts is generally economically hedged by concurrently entering into offsetting derivative contracts. The offsetting derivative contracts have identical notional values, terms, and indices, except in rare circumstances where the indices are not identical which creates a negligible basis mismatch. The Corporation also enters into credit risk participation agreements with financial institution counterparties for interest rate swaps related to loans as either a participant or a lead bank. The risk participation agreements entered into by the Corporation as a participant bank provide credit protection to the financial institution counterparty should the borrower fail to perform on its interest rate derivative contract with that financial institution.

Foreign currency exchange forwards: The Corporation provides foreign currency exchange services to customers, primarily forward contracts. The Corporation's customers enter into a foreign currency exchange forward with the Corporation as a means for them to mitigate exchange rate risk. The Corporation mitigates its risk by then entering into an offsetting foreign currency exchange derivative contract.

Mortgage Derivatives

Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments are recorded in other assets and accrued expenses and other liabilities on the consolidated balance sheets with the changes in fair value recorded as a component of mortgage banking, net on the consolidated statements of income.

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Interest rate-related instruments for MSRs hedge: The fair value of the Corporation's MSRs asset changes in response to changes in primary mortgage loan rates and other assumptions. To mitigate the earnings volatility caused by changes in the fair value of MSRs, the Corporation designates certain financial instruments as an economic hedge. Changes in the fair value of these instruments are generally expected to partially offset changes in the fair value of MSRs and are recorded in other assets and accrued expenses and other liabilities on the consolidated balance sheets with the changes in fair value recorded as a component of mortgage banking, net on the consolidated statements of income.

The following table presents the total notional amounts and gross fair values of the Corporation’s derivatives, as well as the balance sheet netting adjustments as of September 30, 2023 and December 31, 2022. The derivative assets and liabilities are presented on a gross basis prior to the application of bilateral collateral and master netting agreements, but after the variation margin payments with central clearing organizations have been applied as settlement, as applicable. Total derivative assets and liabilities are adjusted to take into consideration the effects of legally enforceable master netting agreements and cash collateral received or paid as of September 30, 2023 and December 31, 2022. The resulting net derivative asset and liability fair values are included in other assets and accrued expenses and other liabilities, respectively, on the consolidated balance sheets.

	Sep 30, 2023								Dec 31, 2022
	Asset				Liability				Asset				Liability
($ in thousands)	Notional Amount		Fair Value		Notional Amount		Fair Value		Notional Amount		Fair Value		Notional Amount		Fair Value
Designated as hedging instruments:
Interest rate-related instruments	$	1,150,000	$	2,109	$	1,700,000	$	21,520	$	900,000	$	4,349	$	1,150,000	$	1,260
Foreign currency exchange forwards	353,217		2,886		70,019		134		261,595		416		167,088		972
Total designated as hedging instruments			4,995				21,654				4,765				2,233
Not designated as hedging instruments:
Interest rate-related and other instruments	3,022,150		140,414		6,320,192		294,062		4,246,823		62,401		4,599,391		251,398
Foreign currency exchange forwards	74,245		1,751		63,309		1,393		68,570		437		34,240		402
Mortgage banking(a)(b)	43,436		1,213		84,000		—		21,265		86		33,000		46
Total not designated as hedging instruments			143,379				295,455				62,925				251,847
Gross derivatives before netting			148,373				317,109				67,690				254,079
Less: Legally enforceable master netting agreements			1,252				1,252				2,788				2,788
Less: Cash collateral pledged/received			88,207				—				26,898				217
Total derivative instruments, after netting			$	58,915			$	315,857			$	38,003			$	251,073

(a) The notional amount of the mortgage derivative asset includes interest rate lock commitments, while the notional amount of the mortgage derivative liability includes forward commitments.
(b) At September 30, 2023, the mortgage derivative asset included approximately $806,000 of forward commitments fair value.

The following table presents amounts that were recorded on the consolidated balance sheets related to cumulative basis adjustments for fair value hedges:

	Line Item in the Consolidated Balance Sheets in Which the Hedged Item is Included
	Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)		Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)
($ in thousands)	September 30, 2023				December 31, 2022
Other long-term funding	$	(537,081)	$	12,919	$	(248,145)	$	1,855
FHLB advances	(578,103)		21,897		(585,692)		14,308
Total	$	(1,115,185)	$	34,815	$	(833,837)	$	16,163

(a) Excludes hedged items where only foreign currency risk is the designated hedged risk. At September 30, 2023 and December 31, 2022, the carrying amount excluded for foreign currency denominated loans was $423 million and $429 million, respectively.

The Corporation terminated its $500 million fair value hedge during the fourth quarter of 2019. At September 30, 2023, the amortized cost basis of the closed portfolios which had previously been used in the terminated hedging relationship was $292 million and is included in loans on the consolidated balance sheets. This amount includes $1 million of hedging adjustments on the discontinued hedging relationships, which are not presented in the table above.

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The tables below identify the effect of fair value and cash flow hedge accounting on the Corporation's consolidated statements of income for the three and nine months ended September 30, 2023 and 2022:

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value and Cash Flow Hedging Relationships
	Three months ended Sep 30,								Nine Months Ended Sep 30,
	2023				2022				2023				2022
($ in thousands)	Interest Income		Interest Expense		Interest Income		Interest Expense		Interest Income		Interest Expense		Interest Income		Interest Expense
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value or cash flow hedges are recorded(a)	$	(4,589)	$	5,195	$	(120)	$	(380)	$	(9,286)	$	12,039	$	(428)	$	(380)
The effects of fair value and cash flow hedging: Impact on fair value hedging relationships in Subtopic 815-20
Interest contracts:
Hedged items	(74)		(9,001)		(120)		(14,703)		(189)		(18,652)		(428)		(14,703)
Derivatives designated as hedging instruments(a)	(4,516)		14,196		—		14,323		(9,097)		30,691		—		14,323

(a) Includes net settlements on the derivatives.

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value Hedging Relationships
	Three months ended Sep 30,				Nine Months Ended Sep 30,
	2023		2022		2023		2022
($ in thousands)	Capital Markets, Net		Capital Markets, Net		Capital Markets, Net		Capital Markets, Net
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value hedges are recorded	$	—	$	—	$	—	$	—
The effects of fair value hedging: Impact on fair value hedging relationships in Subtopic 815-20
Foreign currency contracts:
Hedged items	(11,575)		(29,846)		(2,186)		(40,346)
Derivatives designated as hedging instruments	11,575		29,846		2,186		40,346

The following table presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Interest rate-related instruments designated as cash flow hedging instruments
Amount of (loss) recognized in OCI on cash flow hedge derivative(a)	$	(13,592)	$	—	$	(33,976)	$	—
Amount of loss reclassified from accumulated other comprehensive income (loss) into interest income(a)	4,516		—		9,097		—

(a) The entirety of (losses) recognized in OCI as well as the losses reclassified from accumulated other comprehensive income (loss) into interest income were included components in the assessment of hedge effectiveness.

Amounts reported in accumulated other comprehensive income (loss) related to cash flow hedge derivatives are reclassified to interest income as interest payments are made on the hedged variable interest rate assets. The Corporation estimates that $18 million will be reclassified as a decrease to interest income over the next 12 months. This amount could differ from amounts actually recognized due to changes in interest rates, hedge de-designations, or the addition of other hedges subsequent to September 30, 2023. The maximum length of time over which the Corporation is hedging its exposure to the variability in future cash flows is 38 months as of September 30, 2023.

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The table below identifies the effect of derivatives not designated as hedging instruments on the Corporation's consolidated statements of income for the three and nine months ended September 30, 2023 and 2022:

	Consolidated Statements of Income Category of Gain / (Loss)  Recognized in Income	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)		2023		2022		2023		2022
Derivative instruments
Interest rate-related and other instruments — customer and mirror, net	Capital markets, net	$	222	$	(33)	$	359	$	533
Interest rate-related instruments — MSRs hedge	Mortgage banking, net	(5,877)		(3,547)		(5,551)		(12,559)
Foreign currency exchange forwards	Capital markets, net	365		709		1,751		1,442
Interest rate lock commitments (mortgage)	Mortgage banking, net	(24)		(1,389)		321		(3,020)
Forward commitments (mortgage)	Mortgage banking, net	470		3,543		853		3,415

Note 10 Balance Sheet Offsetting

Interest Rate-Related Instruments and Foreign Exchange Forwards (“Interest and Foreign Exchange Agreements”)

The Corporation enters into interest rate-related instruments to facilitate the interest rate risk management strategies of commercial customers and foreign exchange forwards to manage customers' exposure to fluctuating foreign exchange rates. The Corporation typically mitigates these risks by entering into equal and offsetting agreements with highly rated third-party financial institutions, though in rare circumstances the agreements are not perfectly equal and offsetting, which creates a negligible basis mismatch. The Corporation is party to master netting arrangements with some of its financial institution counterparties that create single net settlements of all legal claims or obligations to pay or receive the net amount of settlement of the individual interest and foreign exchange agreements. Collateral, usually in the form of investment securities and cash, is posted by the counterparty with net liability positions in accordance with contract thresholds. Derivatives subject to a legally enforceable master netting agreement are reported with assets and liabilities offset resulting in a net position which is further offset by any cash collateral, and is reported in other assets and accrued expenses and other liabilities on the face of the consolidated balance sheets. For disclosure purposes, the net position on the consolidated balance sheets can be further netted down by investment securities collateral received or pledged. See Note 9 for additional information on the Corporation’s derivative and hedging activities.

The following table presents the interest rate and foreign exchange assets and liabilities subject to an enforceable master netting arrangement as of September 30, 2023 and December 31, 2022. The interest rate and foreign exchange agreements the Corporation has with its commercial customers are not subject to an enforceable master netting arrangement and are therefore excluded from this table:

	Gross Amounts Recognized		Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets				Net Amounts Presented on the Consolidated Balance Sheets		Gross Amounts Not Offset on the Consolidated Balance Sheets
($ in thousands)			Derivative Liabilities Offset		Cash Collateral Received				Security Collateral Received		Net  Amount
Derivative assets
September 30, 2023	$	140,884	$	(1,252)	$	(88,207)	$	51,425	$	(32,257)	$	19,168
December 31, 2022	63,029		(2,788)		(26,898)		33,342		(30,753)		2,589
	Gross Amounts Recognized		Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets				Net Amounts Presented on the Consolidated Balance Sheets		Gross Amounts Not Offset on the Consolidated Balance Sheets
($ in thousands)			Derivative Assets Offset		Cash Collateral Pledged				Security Collateral Pledged		Net  Amount
Derivative liabilities
September 30, 2023	$	22,964	$	(1,252)	$	—	$	21,713	$	—	$	21,713
December 31, 2022	3,096		(2,788)		(217)		91		—		91

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Note 11 Commitments, Off-Balance Sheet Arrangements, Legal Proceedings, and Regulatory Matters

The Corporation utilizes a variety of financial instruments in the normal course of business to meet the financial needs of its customers and to manage its own exposure to fluctuations in interest rates. These financial instruments include lending-related and other commitments (see below) as well as derivative instruments (see Note 9). The following is a summary of lending-related commitments:

($ in thousands)	Sep 30, 2023		Dec 31, 2022
Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale(a)(b)	$	11,228,683	$	12,444,275
Commercial letters of credit(a)	4,067		3,188
Standby letters of credit(c)	246,954		270,692

(a) These off-balance sheet financial instruments are exercisable at the market rate prevailing at the date the underlying transaction will be completed and, thus, are deemed to have no current fair value, or the fair value is based on fees currently charged to enter into similar agreements and was not material at September 30, 2023 or December 31, 2022.

(b) Interest rate lock commitments to originate residential mortgage loans held for sale are considered derivative instruments and are disclosed in Note 9.

(c) Standby letters of credit are presented excluding participations. The Corporation has established a liability of $3 million at both September 30, 2023 and December 31, 2022, as an estimate of the fair value of these financial instruments.

Lending-related Commitments

As a financial services provider, the Corporation routinely enters into commitments to extend credit. Such commitments are subject to the same credit policies and approval process accorded to loans made by the Corporation, with each customer’s creditworthiness evaluated on a case-by-case basis. The commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee. The Corporation’s exposure to credit loss in the event of nonperformance by the other party to these financial instruments is represented by the contractual amount of those instruments. The amount of collateral obtained, if deemed necessary by the Corporation upon extension of credit, is based on management’s credit evaluation of the customer. Since a significant portion of commitments to extend credit are subject to specific restrictive loan covenants or may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash flow requirements. An allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb expected lifetime losses related to unfunded commitments (including unfunded loan commitments and letters of credit).

The following table presents a summary of the changes in the allowance for unfunded commitments:

($ in thousands)	Nine Months Ended September 30, 2023		Year Ended December 31, 2022
Allowance for unfunded commitments
Balance at beginning of period	$	38,776	$	39,776
Provision for unfunded commitments	(4,000)		(1,000)
Balance at end of period	$	34,776	$	38,776

Lending-related commitments include commitments to extend credit, commitments to originate residential mortgage loans held for sale, commercial letters of credit, and standby letters of credit. Commitments to extend credit are legally binding agreements to lend to customers at predetermined interest rates, as long as there is no violation of any condition established in the contracts. Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments is recorded in other assets and accrued expenses and other liabilities on the consolidated balance sheets. The Corporation’s derivative and hedging activity is further described in Note 9. Commercial and standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party, while standby letters of credit generally are contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party.

Other Commitments

The Corporation invests in qualified affordable housing projects, historic projects, new market projects, and opportunity zone funds for the purpose of community reinvestment and obtaining tax credits and other tax benefits. Return on the Corporation's investment in these projects and funds comes in the form of the tax credits and tax losses that pass through to the Corporation, and deferral or elimination of capital gain recognition for tax purposes. The aggregate carrying value of these investments at September 30, 2023 was $222 million, compared to $250 million at December 31, 2022, included in tax credit and other investments on the consolidated balance sheets. The Corporation utilizes the proportional amortization method to account for investments in qualified affordable housing projects.

Under the proportional amortization method, the Corporation amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits. The Corporation recognized additional income tax expense attributable to the amortization of investments in qualified affordable housing projects of $26 million and $25 million for the nine months ended September 30,

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2023 and September 30, 2022, respectively, and $9 million for both the three months ended September 30, 2023 and September 30, 2022. The Corporation's remaining investment in qualified affordable housing projects accounted for under the proportional amortization method totaled $219 million at September 30, 2023 and $246 million at December 31, 2022.

The Corporation’s unfunded equity contributions relating to investments in qualified affordable housing and historic projects are recorded in accrued expenses and other liabilities on the consolidated balance sheets. The Corporation’s remaining unfunded equity contributions totaled $27 million at September 30, 2023 and $40 million at December 31, 2022.

For the nine months ended September 30, 2023 and the year ended December 31, 2022, the Corporation did not record any impairment related to qualified affordable housing investments.

The Corporation has principal investment commitments to provide capital-based financing to private companies through either direct investment in specific companies or through investment funds and partnerships. The timing of future cash requirements to fund such principal investment commitments is generally dependent on the investment cycle, whereby privately held companies are funded by private equity investors and ultimately sold, merged, or taken public through an initial offering, which can vary based on overall market conditions, as well as the nature and type of industry in which the companies operate. The Corporation also invests in loan pools that support CRA loans. The timing of future cash requirements to fund these pools is dependent upon loan demand, which can vary over time. The aggregate carrying value of these investments was $34 million at September 30, 2023 and $27 million at December 31, 2022, included in tax credit and other investments on the consolidated balance sheets.

Legal Proceedings

The Corporation is party to various pending and threatened claims and legal proceedings arising in the normal course of business activities, some of which involve claims for substantial amounts. Although there can be no assurance as to the ultimate outcomes, the Corporation believes it has meritorious defenses to the claims asserted against it in its currently outstanding matters and intends to continue to defend itself vigorously with respect to such legal proceedings. The Corporation will consider settlement of cases when, in management’s judgment, it is in the best interests of the Corporation and its shareholders.

On at least a quarterly basis, the Corporation assesses its liabilities and contingencies in connection with all pending or threatened claims and litigation, utilizing the most recent information available. On a matter by matter basis, an accrual for loss is established for those matters which the Corporation believes it is probable that a loss may be incurred and that the amount of such loss can be reasonably estimated. Once established, each accrual is adjusted as appropriate to reflect any subsequent developments. Accordingly, management’s estimate will change from time to time, and actual losses may be more or less than the current estimate. For matters where a loss is not probable, or the amount of the loss cannot be estimated, no accrual is established.

Resolution of legal claims is inherently unpredictable, and in many legal proceedings various factors exacerbate this inherent unpredictability, including where the damages sought are unsubstantiated or indeterminate, it is unclear whether a case brought as a class action will be allowed to proceed on that basis, discovery is not complete, the proceeding is not yet in its final stages, the matters present legal uncertainties, there are significant facts in dispute, there are a large number of parties (including where it is uncertain how liability, if any, will be shared among multiple defendants), or there is a wide range of potential results.

Management believes that the legal proceedings currently pending against it should not have a material adverse effect on the Corporation’s consolidated financial condition. However, in light of the uncertainties involved in such proceedings, there is no assurance that the ultimate resolution of these matters will not significantly exceed the reserves the Corporation has currently accrued or that a matter will not have material reputational or other qualitative consequences. As a result, the outcome of a particular matter may be material to the Corporation’s operating results for a particular period, depending on, among other factors, the size of the loss or liability imposed and the level of the Corporation’s income for that period.

Regulatory Matters

A variety of consumer products, including mortgage and deposit products, and certain fees and charges related to such products, have come under increased regulatory scrutiny. It is possible that regulatory authorities could bring enforcement actions, including civil money penalties, or take other actions against the Corporation in regard to these consumer products. The Bank could also determine of its own accord, or be required by regulators, to refund or otherwise make remediation payments to customers in connection with these products, fees and charges. It is not possible at this time for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss related to such matters.

In recent consent orders with financial institutions, the CFPB has asserted that certain overdraft charges constitute “unfair and abusive acts and practices.” In certain instances, these financial institutions have agreed to make restitution to customers and to

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pay civil money penalties. Included in the practices that the CFPB has asserted are “unfair and abusive” are 1) overdraft fees on transactions that had a sufficient balance at the time authorized but then later settled with an insufficient balance (“APSN Fees”), and 2) repeat insufficient funds fees on transactions resubmitted for payment after they were initially declined (“Representment Fees”). In light of these orders, the Corporation has undertaken a review of its current and past practices regarding APSN Fees and Representment Fees. Such review could result in changes to our overdraft fee policies, which would reduce our fee income in future periods and which could also result in a decision to make remediation payments to current and past customers who incurred such fees. The Corporation’s financial results may be materially impacted in any period in which the Corporation determines to make any such remediation payments. In addition to the review described above, the Corporation received an arbitration request in July 2023 which, among other things, seeks to recover APSN Fees and Representment Fees on behalf of approximately 1,400 current and former deposit customers of the Corporation (the “arbitration request”). The arbitration request is being considered in the review of APSN Fees and Representment Fees described above. It is not possible for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss at this time with respect to the arbitration request.

Mortgage Repurchase Reserve

The Corporation sells residential mortgage loans to investors in the normal course of business. Residential mortgage loans sold to others are predominantly conventional residential first lien mortgages originated under the Corporation's usual underwriting procedures, and are most often sold on a nonrecourse basis, primarily to the GSEs. The Corporation’s agreements to sell residential mortgage loans in the normal course of business usually require certain representations and warranties on the underlying loans sold, related to credit information, loan documentation, collateral, and insurability. Subsequent to being sold, if a material underwriting deficiency or documentation defect is discovered, the Corporation may be obligated to repurchase the loan or reimburse the GSEs for losses incurred (collectively, “make whole requests”). The make whole requests and any related risk of loss under the representations and warranties are largely driven by borrower performance. The Corporation also sells qualifying residential mortgage loans guaranteed by U.S. government agencies into GNMA pools.

As a result of make whole requests, the Corporation has repurchased loans with aggregate principal balances of $5 million and $6 million for the nine months ended September 30, 2023 and the year ended December 31, 2022, respectively. There were no loss reimbursement and settlement claims paid in the nine months ended September 30, 2023 or for the year ended December 31, 2022. Make whole requests since January 1, 2022 generally arose from loans originated since January 1, 2020 with such balances totaling $4.6 billion at the time of sale, consisting primarily of loans sold to GSEs. As of September 30, 2023, $3.3 billion of those loans originated since January 1, 2020 remain outstanding.

The balance in the mortgage repurchase reserve at the balance sheet date reflects the estimated amount of potential loss the Corporation could incur from repurchasing a loan, as well as loss reimbursements, indemnifications, and other settlement resolutions. The mortgage repurchase reserve, included in accrued expenses and other liabilities on the consolidated balance sheets, was approximately $680,000 at September 30, 2023 and $1 million at December 31, 2022.

The Corporation may also sell residential mortgage loans with limited recourse (limited in that the recourse period ends prior to the loan’s maturity, usually after certain time and/or loan paydown criteria have been met), whereby repurchase could be required if the loan had defined delinquency issues during the limited recourse periods. At September 30, 2023 and December 31, 2022, there were $15 million and $7 million, respectively, of residential mortgage loans sold with such recourse risk. There have been limited instances and immaterial historical losses on repurchases for recourse under the limited recourse criteria.

The Corporation has a subordinate position to the FHLB in the credit risk on residential mortgage loans it sold to the FHLB in exchange for a monthly credit enhancement fee. The Corporation has not sold loans to the FHLB with such credit risk retention since February 2005. At September 30, 2023 and December 31, 2022, there were $17 million and $19 million, respectively, of such residential mortgage loans with credit risk recourse, upon which there have been immaterial historical losses to the Corporation.

Note 12 Fair Value Measurements

Fair value represents the estimated price at which an orderly transaction to sell an asset or to transfer a liability would take place between market participants at the measurement date under current market conditions (i.e., an exit price concept).

The valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis are described in the Fair Value Measurements note in the Corporation’s 2022 Annual Report on Form 10-K.

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The table below presents the Corporation’s financial instruments measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022, aggregated by the level in the fair value hierarchy within which those measurements fall:

($ in thousands)	Fair Value Hierarchy	Sep 30, 2023		Dec 31, 2022
Assets
AFS investment securities:
U.S. Treasury securities	Level 1	$	109,024	$	109,378
Agency securities	Level 2	13,590		13,532
Obligations of state and political subdivisions (municipal securities)	Level 2	210,317		230,714
Residential mortgage-related securities:
FNMA / FHLMC	Level 2	1,436,759		1,604,610
GNMA	Level 2	1,384,670		497,596
Commercial mortgage-related securities:
FNMA / FHLMC	Level 2	16,154		17,142
GNMA	Level 2	176,474		110,462
Asset backed securities:
FFELP	Level 2	138,514		151,191
SBA	Level 2	3,261		4,477
Other debt securities	Level 2	2,915		2,922
Total AFS investment securities	Level 1	$	109,024	$	109,378
Total AFS investment securities	Level 2	3,382,655		2,632,647
Equity securities with readily determinable fair values	Level 1	6,701		5,991
Residential loans held for sale	Level 2	54,790		20,383
Mortgage servicing rights, net	Level 3	89,131		77,351
Interest rate-related instruments designated as hedging instruments(a)	Level 2	2,109		4,349
Foreign currency exchange forwards designated as hedging instruments(a)	Level 2	2,886		416
Interest rate-related and other instruments not designated as hedging instruments(a)	Level 2	140,414		62,401
Foreign currency exchange forwards not designated as hedging instruments(a)	Level 2	1,751		437
Interest rate lock commitments to originate residential mortgage loans held for sale	Level 3	407		86
Forward commitments to sell residential mortgage loans	Level 3	806		—
Liabilities
Interest rate-related instruments designated as hedging instruments(a)	Level 2	$	21,520	$	1,260
Foreign currency exchange forwards designated as hedging instruments(a)	Level 2	134		972
Interest rate-related and other instruments not designated as hedging instruments(a)	Level 2	294,062		251,398
Foreign currency exchange forwards not designated as hedging instruments(a)	Level 2	1,393		402
Forward commitments to sell residential mortgage loans	Level 3	—		46

(a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the
    same counterparty where there is a legally enforceable master netting agreement in place.

The table below presents a rollforward of the consolidated balance sheets amounts for the nine months ended September 30, 2023 and the year ended December 31, 2022, for the Corporation's mortgage derivatives measured on a recurring basis and classified within Level 3 of the fair value hierarchy:

($ in thousands)	Interest rate lock commitments to originate residential mortgage loans held for sale		Forward commitments to sell residential mortgage loans		Total
Balance December 31, 2021	$	2,617	$	(30)	$	2,647
New production	10,442		(2,028)		12,470
Closed loans / settlements	(913)		24,766		(25,679)
Other	(12,060)		(22,662)		10,603
Change in mortgage derivative	(2,531)		76		(2,607)
Balance December 31, 2022	$	86	$	46	$	40
New production	$	4,681	$	(1,274)	$	5,955
Closed loans / settlements	(2,417)		1,969		(4,386)
Other	(1,943)		(1,547)		(396)
Change in mortgage derivative	321		(853)		1,173
Balance September 30, 2023	$	407	$	(806)	$	1,213

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The following table presents the carrying value of equity securities without readily determinable fair values still held as of September 30, 2023 that are measured under the measurement alternative and the related adjustments recorded during the periods presented for those securities with observable price changes. These securities are included in the nonrecurring fair value tables when applicable price changes are observable. Also shown are the cumulative upward and downward adjustments for the Corporation's equity securities without readily determinable fair values as of September 30, 2023:

($ in thousands)
Equity securities without readily determinable fair values
Carrying value as of December 31, 2022	$	19,225
Purchases	10,011
Carrying value as of September 30, 2023	$	29,236
Cumulative upward carrying value changes between January 1, 2018 and September 30, 2023	$	19,134
Cumulative downward carrying value changes/impairment between January 1, 2018 and September 30, 2023	$	—

The table below presents the Corporation’s assets measured at fair value on a nonrecurring basis, aggregated by the level in the fair value hierarchy within which those measurements fall:

($ in thousands)	Fair Value Hierarchy	Fair Value		Consolidated Statements of Income Category of Adjustment Recognized in Income	Adjustment Recognized on the Consolidated Statements of Income(a)
September 30, 2023
Assets
Individually evaluated loans	Level 3	$	56,506	Provision for credit losses	$	28,926
OREO(b)	Level 2	1,315		Other noninterest expense / provision for credit losses(c)	1,124
December 31, 2022
Assets
Individually evaluated loans	Level 3	$	23,584	Provision for credit losses	$	4,405
OREO(b)	Level 2	2,196		Other noninterest expense / provision for credit losses(c)	971
Equity securities without readily determinable fair values	Level 3	19,134		Investment securities gains (losses), net	5,690

(a) Includes the full year impact on the consolidated statements of income.
(b) If the fair value of the collateral exceeds the carrying amount of the asset, no charge off or adjustment is necessary, the asset is not considered to be carried at fair value and is therefore not included in the table.
(c) When a property's value is written down at the time it is transferred to OREO, the charge off is booked to the provision for credit losses. When a property is already in OREO and subsequently written down, the charge off is booked to other noninterest expense.

Certain nonfinancial assets and nonfinancial liabilities measured at fair value on a nonrecurring basis include the fair value analysis in the goodwill impairment test as well as intangible assets and other nonfinancial long-lived assets measured at fair value for the purpose of impairment assessment.

The table below presents the unobservable inputs that are readily quantifiable pertaining to Level 3 measurements:

September 30, 2023	Valuation Technique	Significant Unobservable Input	Range of Inputs			Weighted Average Input Applied
Mortgage servicing rights	Discounted cash flow	Option adjusted spread	6%	-	8%	6%
Mortgage servicing rights	Discounted cash flow	Constant prepayment rate	—%	-	100%	6%
Individually evaluated loans	Appraisals / Discounted cash flow	Collateral / Discount factor	22%	-	36%	34%
Interest rate lock commitments to originate residential mortgage loans held for sale	Discounted cash flow	Closing Ratio	48%	-	100%	84%

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Fair Value of Financial Instruments

The Corporation is required to disclose estimated fair values for its financial instruments.

Fair value estimates are set forth below for the Corporation’s financial instruments:

		Sep 30, 2023				Dec 31, 2022
($ in thousands)	Fair Value Hierarchy Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets
Cash and due from banks	Level 1	$	388,694	$	388,694	$	436,952	$	436,952
Interest-bearing deposits in other financial institutions	Level 1	323,130		323,130		156,693		156,693
Federal funds sold and securities purchased under agreements to resell	Level 1	965		965		27,810		27,810
AFS investment securities	Level 1	109,024		109,024		109,378		109,378
AFS investment securities	Level 2	3,382,655		3,382,655		2,632,647		2,632,647
HTM investment securities, net	Level 1	999		948		999		936
HTM investment securities, net	Level 2	3,899,416		3,144,883		3,959,399		3,400,028
Equity securities with readily determinable fair values	Level 1	6,701		6,701		5,991		5,991
Equity securities without readily determinable fair values	NAV	10,000		10,000		—		—
Equity securities without readily determinable fair values	Level 3	19,236		19,236		19,225		19,225
FHLB and Federal Reserve Bank stocks	Level 2	268,698		268,698		295,496		295,496
Residential loans held for sale	Level 2	54,790		54,790		20,383		20,383
Loans, net	Level 3	29,847,392		28,705,298		28,486,849		27,481,426
Bank and corporate owned life insurance	Level 2	679,775		679,775		676,530		676,530
Mortgage servicing rights, net	Level 3	89,131		89,131		77,351		77,351
Derivatives (other assets)(a)	Level 2	147,160		147,160		67,603		67,603
Interest rate lock commitments to originate residential mortgage loans held for sale (other assets)	Level 3	407		407		86		86
Forward commitments to sell residential mortgage loans (other assets)	Level 3	806		806		—		—
Financial liabilities
Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts	Level 3	$	26,056,389	$	26,056,389	$	27,705,996	$	27,705,996
Brokered CDs and other time deposits(b)	Level 2	6,066,937		6,066,937		1,930,158		1,930,158
Short-term funding	Level 2	451,644		451,624		605,937		605,205
FHLB advances	Level 2	3,733,041		3,734,775		4,319,861		4,322,264
Other long-term funding	Level 2	529,459		519,337		248,071		242,151
Standby letters of credit(c)	Level 2	2,691		2,691		2,881		2,881
Derivatives (accrued expenses and other liabilities)(a)	Level 2	317,109		317,109		254,033		254,033
Forward commitments to sell residential mortgage loans (accrued expenses and other liabilities)	Level 3	—		—		46		46

(a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the
    same counterparty where there is a legally enforceable master netting agreement in place.
(b) When the estimated fair value is less than the carrying value, the carrying value is reported as the fair value.
(c) The commitment on standby letters of credit was $247 million at September 30, 2023 and $271 million at December 31, 2022. See Note 11 for additional information on the standby letters of credit and for information on the fair value of lending-related commitments.

Note 13 Retirement Plans

The Corporation has a noncontributory defined benefit RAP, covering substantially all employees who meet participation requirements. The benefits are based primarily on years of service and the employee’s compensation paid. Employees of acquired entities generally participate in the RAP after consummation of the business combinations. Any retirement plans of acquired entities are typically merged into the RAP after completion of the mergers, and credit is usually given to employees for years of service at the acquired institution for vesting and eligibility purposes.

The Corporation also provides legacy healthcare access to a limited group of retired employees from a previous acquisition in the Postretirement Plan. There are no other active retiree healthcare plans.

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The components of net periodic pension cost and net periodic benefit cost for the RAP and Postretirement Plan for the three and nine months ended September 30, 2023 and 2022 were as follows:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
RAP
Service cost	$	800	$	906	$	2,392	$	2,752
Interest cost	2,794		1,820		8,165		5,364
Expected return on plan assets	(8,243)		(6,706)		(24,647)		(20,177)
Amortization of prior service cost	(63)		(63)		(188)		(188)
Amortization of actuarial loss	—		347		37		494
Total net periodic pension cost	$	(4,713)	$	(3,696)	$	(14,241)	$	(11,754)
Postretirement Plan
Interest cost	$	20	$	13	$	59	$	40
Amortization of prior service cost	(19)		(19)		(56)		(56)
Amortization of actuarial (gain)	(7)		—		(22)		—
Total net periodic benefit cost	$	(6)	$	(6)	$	(19)	$	(17)

The components of net periodic pension cost and net periodic benefit cost, other than the service cost component, are included in the line item other of noninterest expense on the consolidated statements of income. The service cost components are included in personnel on the consolidated statements of income.

The Corporation’s funding policy is to pay at least the minimum amount required by federal law and regulations, with consideration given to the maximum funding amounts allowed. The Corporation regularly reviews the funding of its RAP. There were no contributions during 2022 or the nine months ended September 30, 2023.

Note 14 Segment Reporting

The Corporation utilizes a risk-based internal profitability measurement system to provide strategic business unit reporting. The profitability measurement system is based on internal management methodologies designed to produce consistent results and reflect the underlying economics of the units. Certain strategic business units have been combined for segment information reporting purposes where the nature of the products and services, the type of customer, and the distribution of those products and services are similar. The three reportable segments are Corporate and Commercial Specialty; Community, Consumer, and Business; and Risk Management and Shared Services. The financial information of the Corporation’s segments has been compiled utilizing the accounting policies described in the Corporation’s 2022 Annual Report on Form 10-K, with certain exceptions. The more significant of these exceptions are described herein.

The reportable segment results are presented based on the Corporation's internal management accounting process. The management accounting policies and processes utilized in compiling segment financial information are highly subjective and, unlike financial accounting, are not based on authoritative guidance similar to U.S. GAAP. As a result, reported segments and the financial information of the reported segments are not necessarily comparable with similar information reported by other financial institutions. Furthermore, changes in management structure or allocation methodologies and procedures may result in changes in previously reported segment financial data. Additionally, the information presented is not indicative of how the segments would perform if they operated as independent entities.

To determine financial performance of each segment, the Corporation allocates FTP assignments, the provision for credit losses, certain noninterest expenses, income taxes, and equity to each segment. Allocation methodologies are subject to periodic adjustment as the internal management accounting system is revised, the interest rate environment evolves, and business or product lines within the segments change. Also, because the development and application of these methodologies is a dynamic process, the financial results presented may be periodically reviewed.

The Corporation allocates net interest income using an internal FTP methodology that charges users of funds (assets, primarily loans) and credits providers of funds (liabilities, primarily deposits) based on the maturity, prepayment and/or re-pricing characteristics of the assets and liabilities. The net effect of this allocation is offset in the Risk Management and Shared Services segment to ensure consolidated totals reflect the Corporation's net interest income. The net FTP allocation is reflected as net intersegment interest income (expense) in the accompanying tables.

The provision for credit losses is allocated to segments based on the expected long-term annual net charge off rates attributable to the credit risk of loans managed by the segment during the period. In contrast, the level of the consolidated provision for credit losses is determined based on an ACLL model using the methodologies described in the Corporation’s 2022 Annual Report on Form 10-K. The net effect of the credit provision is recorded in Risk Management and Shared Services. Indirect

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expenses incurred by certain centralized support areas are allocated to segments based on actual usage (for example, volume measurements) and other criteria. Certain types of administrative expense and bank-wide expense accruals (including, when applicable, amortization of CDIs and other intangible assets associated with acquisitions, acquisition-related costs, and asset gains on disposed business units) are generally not allocated to segments. Income taxes are allocated to segments based on the Corporation’s estimated effective tax rate, with certain segments adjusted for any tax-exempt income or non-deductible expenses. Equity is allocated to the segments based on regulatory capital requirements and in proportion to an assessment of the inherent risks associated with the business of the segment (including interest, credit and operating risk).

A brief description of each business segment is presented below. A more in-depth discussion of these segments can be found in the Segment Reporting note in the Corporation’s 2022 Annual Report on Form 10-K.

The Corporate and Commercial Specialty segment serves a wide range of customers including larger businesses, developers, not-for-profits, municipalities, and financial institutions by providing lending and deposit solutions as well as the support to deliver, fund, and manage such banking solutions. In addition, this segment provides a variety of investment, fiduciary, and retirement planning products and services to individuals and small to mid-sized businesses. The Community, Consumer, and Business segment serves individuals, as well as small and mid-sized businesses, by providing lending and deposit solutions. The Risk Management and Shared Services segment includes key shared operational functions and also includes residual revenue and expenses, representing the difference between actual amounts incurred and the amounts allocated to operating segments, including interest rate risk residuals (FTP mismatches) and credit risk and provision residuals (long-term credit charge mismatches).

Information about the Corporation’s segments is presented below:

	Corporate and Commercial Specialty
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income	$	250,365	$	161,143	$	710,031	$	363,135
Net intersegment interest (expense)	(106,675)		(40,117)		(288,366)		(36,893)
Segment net interest income	143,690		121,026		421,665		326,242
Noninterest income	34,081		35,663		99,243		112,620
Total revenue	177,771		156,688		520,908		438,862
Provision for credit losses	14,066		11,904		41,523		36,803
Noninterest expense	63,207		58,934		186,351		172,141
Income before income taxes	100,498		85,851		293,034		229,918
Income tax expense	19,304		15,967		54,138		42,248
Net income	$	81,194	$	69,884	$	238,897	$	187,670
Allocated goodwill					$	525,836	$	525,836

	Community, Consumer, and Business
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income	$	67,139	$	87,156	$	219,883	$	233,699
Net intersegment interest income	123,900		49,437		317,820		98,907
Segment net interest income	191,039		136,593		537,703		332,606
Noninterest income	29,675		26,745		85,881		92,072
Total revenue	220,714		163,338		623,584		424,679
Provision for credit losses	7,381		5,378		21,467		14,958
Noninterest expense	108,185		107,860		328,960		311,423
Income before income taxes	105,148		50,100		273,158		98,298
Income tax expense	22,187		10,521		57,469		20,642
Net income	$	82,961	$	39,579	$	215,688	$	77,655
Allocated goodwill					$	579,156	$	579,156

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	Risk Management and Shared Services
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income (loss)	$	(63,260)	$	16,140	$	(143,743)	$	71,498
Net intersegment (expense)	(17,225)		(9,320)		(29,454)		(62,014)
Segment net interest income (loss)	(80,485)		6,820		(173,197)		9,484
Noninterest income	2,823		8,381		9,071		16,021
Total revenue	(77,663)		15,201		(164,126)		25,505
Provision for credit losses	496		(283)		(975)		(38,756)
Noninterest expense	24,814		28,997		58,980		66,940
(Loss) before income taxes	(102,972)		(13,513)		(222,131)		(2,679)
Income tax expense (benefit)	(22,065)		(325)		(41,308)		5,286
Net (loss)	$	(80,907)	$	(13,189)	$	(180,823)	$	(7,965)
Allocated goodwill					$	—	$	—

	Consolidated Total
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income	$	254,244	$	264,439	$	786,171	$	668,332
Net intersegment interest income	—		—		—		—
Segment net interest income	254,244		264,439		786,171		668,332
Noninterest income	66,579		70,788		194,195		220,713
Total revenue	320,823		335,227		980,366		889,045
Provision for credit losses	21,943		16,998		62,014		13,006
Noninterest expense	196,205		195,791		574,291		550,503
Income before income taxes	102,674		122,438		344,061		325,536
Income tax expense	19,426		26,163		70,299		68,176
Net income	$	83,248	$	96,275	$	273,762	$	257,360
Allocated goodwill					$	1,104,992	$	1,104,992

46

Note 15 Accumulated Other Comprehensive Income (Loss)

The following tables summarize the components of accumulated other comprehensive income (loss) at September 30, 2023 and 2022, including changes during the preceding three and nine month periods as well as any reclassifications out of accumulated other comprehensive income (loss):

($ in thousands)	AFS Investment Securities		Cash Flow Hedge Derivatives		Defined Benefit Pension and Postretirement Obligations		Accumulated Other Comprehensive Income (Loss)
Balance December 31, 2022	$	(233,192)	$	3,360	$	(42,968)	$	(272,799)
Other comprehensive (loss) before reclassifications	(69,512)		—		—		(69,512)
Amounts reclassified from accumulated other comprehensive income (loss):
HTM investment securities, net, at amortized cost	6,883		—		—		6,883
Other assets / accrued expenses and other liabilities	—		(33,976)		—		(33,976)
Interest income	—		9,097		—		9,097
Personnel expense	—		—		(244)		(244)
Other expense	—		—		15		15
Income tax benefit	15,879		5,488		31		21,398
Net other comprehensive loss during period	(46,751)		(19,391)		(198)		(66,340)
Balance September 30, 2023	$	(279,943)	$	(16,032)	$	(43,166)	$	(339,140)
Balance December 31, 2021	$	(5,266)	$	—	$	(5,051)	$	(10,317)
Other comprehensive (loss) before reclassifications	(268,413)		—		—		(268,413)
Unrealized (losses) on AFS securities transferred to HTM securities	(67,604)		—		—		(67,604)
Amounts reclassified from accumulated other comprehensive income (loss):
Investment securities (gains), net	(12)		—		—		(12)
HTM investment securities, net, at amortized cost	7,269		—		—		7,269
Personnel expense	—		—		(244)		(244)
Other expense	—		—		494		494
Income tax (expense) benefit	83,906		—		(470)		83,436
Net other comprehensive (loss) during period	(244,854)		—		(221)		(245,074)
Balance September 30, 2022	$	(250,120)	$	—	$	(5,272)	$	(255,391)

($ in thousands)	AFS Investment Securities		Cash Flow Hedge Derivatives		Defined Benefit Pension and Postretirement Obligations		Accumulated Other Comprehensive Income (Loss)
Balance June 30, 2023	$	(239,273)	$	(9,270)	$	(43,099)	$	(291,642)
Other comprehensive (loss) before reclassifications	(56,924)		—		—		(56,924)
Amounts reclassified from accumulated other comprehensive income (loss):
HTM investment securities, net, at amortized cost	2,327		—		—		2,327
Other assets / accrued expenses and other liabilities	—		(13,592)		—		(13,592)
Interest income	—		4,516		—		4,516
Personnel expense	—		—		(81)		(81)
Other expense	—		—		(7)		(7)
Income tax benefit	13,928		2,315		23		16,266
Net other comprehensive (loss) during period	(40,669)		(6,762)		(66)		(47,497)
Balance September 30, 2023	$	(279,943)	$	(16,032)	$	(43,166)	$	(339,140)
Balance June 30, 2022	$	(177,726)	$	—	$	(5,062)	$	(182,788)
Other comprehensive (loss) before reclassifications	(100,092)		—		—		(100,092)
Amounts reclassified from accumulated other comprehensive income (loss):
HTM investment securities, net, at amortized cost	2,888		—		—		2,888
Personnel expense	—		—		(82)		(82)
Other expense	—		—		347		347
Income tax (expense) benefit	24,810		—		(474)		24,336
Net other comprehensive (loss) during period	(72,394)		—		(209)		(72,603)
Balance September 30, 2022	$	(250,120)	$	—	$	(5,272)	$	(255,391)

47

Note 16 Leases

The Corporation has operating leases for retail and corporate offices, land, and equipment. The Corporation also has a finance lease for retail and corporate offices.

These leases have original terms of 1 year or longer with remaining maturities up to 39 years, some of which include options to extend the lease term. An analysis of the lease options has been completed and any purchase options or optional periods that the Corporation is reasonably likely to extend have been included in the capitalization.

The discount rate used to capitalize the operating leases is the Corporation's FHLB borrowing rate on the date of lease commencement. When determining the rate to discount specific lease obligations, the repayment period and term are considered.

Operating and finance lease costs and cash flows resulting from these leases are presented below:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Operating lease costs	$	1,594	$	1,637	$	4,536	$	5,361
Finance lease costs	23		23		69		96
Operating lease cash flows	1,917		1,880		5,442		6,614
Finance lease cash flows	23		22		69		103

The lease classifications on the consolidated balance sheets were as follows:

($ in thousands)	Consolidated Balance Sheets Category	Sep 30, 2023		Dec 31, 2022
Operating lease right-of-use asset	Premises and equipment	$	23,677	$	25,617
Finance lease right-of-use asset	Other assets	390		455
Operating lease liability	Accrued expenses and other liabilities	26,059		28,357
Finance lease liability	Other long-term funding	405		469

The lease payment obligations, weighted-average remaining lease term, and weighted-average original discount rate were as follows:

	Sep 30, 2023					Dec 31, 2022
($ in thousands)	Lease payments		Weighted-average lease term (in years)	Weighted-average discount rate		Lease payments		Weighted-average lease term (in years)	Weighted-average discount rate
Operating leases
Retail and corporate offices	$	23,662	5.44	2.81	%	$	26,140	5.92	2.62	%
Land	4,255		7.11	3.47	%	4,766		7.59	3.14	%
Equipment	408		2.75	4.62	%	—		0.00	—	%
Total operating leases	$	28,325	5.64	2.93	%	$	30,906	6.17	2.70	%
Finance leases
Retail and corporate offices	$	417	4.50	1.32	%	$	485	5.25	1.32	%
Total finance leases	$	417	4.50	1.32	%	$	485	5.25	1.32	%

Contractual lease payment obligations for each of the next five years and thereafter, in addition to a reconciliation to the Corporation’s lease liability, were as follows:

($ in thousands)	Operating Leases		Finance Leases		Total Leases
Three months ended December 31, 2023	$	1,509	$	23	$	1,532
2024	6,124		93		6,217
2025	5,223		93		5,315
2026	4,672		93		4,765
2027	4,014		93		4,107
Beyond 2027	6,782		23		6,805
Total lease payments	$	28,325	$	417	$	28,742
Less: interest	2,266		12		2,278
Present value of lease payments	$	26,059	$	405	$	26,464

As of September 30, 2023 and December 31, 2022, additional operating leases, primarily retail and corporate offices, that had not yet commenced totaled $4 million and $13 million, respectively. The leases that had not yet commenced as of September 30, 2023 will commence between October 2023 and December 2024 with lease terms of 1 year to 6 years.

48

ITEM 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

Special Note Regarding Forward-Looking Statements

This report contains statements that may constitute forward-looking statements within the meaning of the safe-harbor provisions for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995, such as statements other than historical facts contained or incorporated by reference into this report. These forward-looking statements include statements with respect to the Corporation’s financial condition, results of operations, plans, objectives, future performance and business, including statements preceded by, followed by or that include the words “believes,” “expects,” or “anticipates,” references to estimates or similar expressions. Future filings by the Corporation with the SEC, and future statements other than historical facts contained in written material, press releases and oral statements issued by, or on behalf of the Corporation may also constitute forward-looking statements.

All forward-looking statements contained in this report or which may be contained in future statements made for or on behalf of the Corporation are based upon information available at the time the statement is made and the Corporation assumes no obligation to update any forward-looking statements, except as required by federal securities law. Forward-looking statements are subject to significant risks and uncertainties, and the Corporation’s actual results may differ materially from the expected results discussed in such forward-looking statements. Factors that might cause actual results to differ from the results discussed in forward-looking statements include, but are not limited to, the risk factors in Item 1A, Risk Factors, in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022, and as may be described from time to time in the Corporation’s subsequent SEC filings.

Overview

The following discussion and analysis is presented to assist in the understanding and evaluation of the Corporation’s financial condition and results of operations. It is intended to complement the unaudited consolidated financial statements, footnotes, and supplemental financial data appearing elsewhere in this Quarterly Report on Form 10-Q and should be read in conjunction therewith. Management continually evaluates strategic acquisition opportunities and various other strategic alternatives that could involve the sale or acquisition of branches or other assets, or the consolidation or creation of subsidiaries. Within the tables presented, certain columns and rows may not sum due to the use of rounded numbers for disclosure purposes.

49

Performance Summary

•Average loans of $29.4 billion increased $3.9 billion, or 15%, from the first nine months of 2022, with growth in all major loan categories. For 2023, the Corporation expects period end loan growth of 5% to 6%.

•Average deposits of $31.1 billion increased $2.5 billion, or 9%, from the first nine months of 2022, driven by increases in time deposits and network transaction deposits, partially offset by a decrease in noninterest-bearing deposits. For 2023, the Corporation expects end of period core customer deposit compression of 3% with growth of 2% for the second half of the year.

•Net interest income of $786 million increased $118 million, or 18%, from the first nine months of 2022, and net interest margin was 2.86% compared to 2.77% for the first nine months of 2022. The increase in net interest income was driven by higher interest income as a result of growth in balances across all loan categories, which also benefited from the Federal Reserve increasing the federal funds target interest rate 225 bp since September 30, 2022, partially offset by higher interest expense on deposits and borrowings. For 2023, the Corporation expects net interest income growth of 8% to 10%.

•Provision for credit losses was $62 million, compared to a provision of $13 million for the first nine months of 2022, driven by a mix of portfolio loan growth, nominal credit movement, and general macroeconomic trends. For 2023, the Corporation expects to adjust provision to reflect changes to risk grades, economic conditions, loan volumes, and other indications of credit quality.

•Noninterest income of $194 million decreased $27 million, or 12%, from the first nine months of 2022, partially driven by a decrease in service charges and deposit account fees eliminated in 2022 and a decrease in capital markets, net, as a result of lower interest rate swap revenue and syndication fees. For 2023, the Corporation expects total noninterest income to compress by 8% to 10%.

•Noninterest expense of $574 million increased $24 million, or 4%, from the first nine months of 2022, primarily driven by higher personnel expense largely as a result of increased FTEs due to hiring related to previously announced initiatives and continued investment in our employees, increased FDIC assessment expense driven by the FDIC assessment rate increase effective January 2023, and increased technology expense. For 2023, the Corporation expects total noninterest expense to grow by 3% to 4%.

Table 1 Summary Results of Operations: Trends

	Nine months ended						Three months ended
($ in thousands, except per share data)	Sep 30, 2023			Sep 30, 2022			Sep 30, 2023			Jun 30, 2023			Mar 31, 2023			Dec 31, 2022			Sep 30, 2022
Net income	$	273,762		$	257,360		$	83,248		$	87,154		$	103,360		$	108,762		$	96,275
Net income available to common equity	265,137			248,735			80,373			84,279			100,485			105,887			93,400
Earnings per common share - basic	1.76			1.66			0.53			0.56			0.67			0.70			0.62
Earnings per common share - diluted	1.75			1.65			0.53			0.56			0.66			0.70			0.62
Effective tax rate	20.43		%	20.94		%	18.92		%	21.26		%	20.92		%	18.89		%	21.37		%

50

Income Statement Analysis

Net Interest Income

Table 2 Net Interest Income Analysis

	Nine Months Ended Sep 30,
	2023					2022
($ in thousands)	Average Balance		Interest Income / Expense		Average Yield / Rate	Average Balance		Interest Income / Expense		Average Yield / Rate
Assets
Earning assets
Loans(a)(b)(c)
Commercial and business lending	$	10,835,003	$	546,210	6.74%	$	9,623,927	$	236,971	3.29%
Commercial real estate lending	7,286,627		381,425		7.00%	6,438,335		176,006		3.65%
Total commercial	18,121,629		927,634		6.84%	16,062,262		412,977		3.44%
Residential mortgage	8,698,542		217,410		3.33%	7,920,382		177,906		2.99%
Auto finance	1,677,838		60,233		4.80%	657,150		17,837		3.63%
Other retail	895,371		59,163		8.82%	888,241		35,900		5.40%
Total loans	29,393,380		1,264,441		5.75%	25,528,036		644,621		3.37%
Investment securities
Taxable	5,209,845		104,197		2.67%	4,371,244		54,009		1.65%
Tax-exempt(a)	2,314,838		60,429		3.48%	2,416,064		61,771		3.41%
Other short-term investments	495,883		17,990		4.85%	625,748		7,696		1.64%
Investments and other	8,020,566		182,616		3.03%	7,413,056		123,477		2.22%
Total earning assets	37,413,946		$	1,447,057	5.17%	32,941,092		$	768,098	3.11%
Other assets, net	3,005,220					3,134,678
Total assets	$	40,419,166				$	36,075,770
Liabilities and Stockholders' Equity
Interest-bearing liabilities
Interest-bearing deposits
Savings	$	4,743,526	$	43,611	1.23%	$	4,650,105	$	1,427	0.04%
Interest-bearing demand	6,819,714		106,860		2.09%	6,573,680		14,307		0.29%
Money market	6,853,545		130,201		2.54%	7,090,960		12,642		0.24%
Network transaction deposits	1,420,042		53,259		5.01%	795,059		6,460		1.09%
Time deposits	4,447,813		130,818		3.93%	1,266,116		2,754		0.29%
Total interest-bearing deposits	24,284,640		464,749		2.56%	20,375,920		37,590		0.25%
Federal funds purchased and securities sold under agreements to repurchase	344,950		8,504		3.30%	376,687		1,200		0.43%
Commercial paper	11,475		1		0.01%	23,106		2		0.01%
FHLB advances	3,834,247		147,365		5.14%	2,445,486		38,663		2.11%
Long-term funding	495,434		25,895		6.97%	249,759		8,182		4.37%
Total short and long-term funding	4,686,106		181,765		5.18%	3,095,039		48,047		2.07%
Total interest-bearing liabilities	28,970,746		$	646,514	2.98%	23,470,959		$	85,637	0.49%
Noninterest-bearing demand deposits	6,772,521					8,189,067
Other liabilities	567,938					446,249
Stockholders’ equity	4,107,961					3,969,495
Total liabilities and stockholders’ equity	$	40,419,166				$	36,075,770
Interest rate spread					2.19%					2.62%
Net free funds					0.67%					0.15%
Fully tax-equivalent net interest income and net interest margin			$	800,543	2.86%			$	682,461	2.77%
Fully tax-equivalent adjustment			14,372					14,129
Net interest income			$	786,171				$	668,332

(a) The yield on tax-exempt loans and securities is computed on a fully tax-equivalent basis using a tax rate of 21% and is net of the effects of certain disallowed interest deductions.

(b) Nonaccrual loans and loans held for sale have been included in the average balances.
(c) Interest income includes amortization of net deferred loan origination costs and net accreted purchase loan discount.

51

Table 2 Net Interest Income Analysis

	Three Months Ended,
	Sep 30, 2023					Jun 30, 2023					Sep 30, 2022
($ in thousands)	Average Balance		Interest Income / Expense		Average Yield / Rate	Average Balance		Interest Income / Expense		Average Yield / Rate	Average Balance		Interest Income / Expense		Average Yield / Rate
Assets
Earning assets
Loans(a)(b)(c)
Commercial and business lending	$	10,985,584	$	194,956	7.04%	$	10,899,337	$	184,080	6.77%	$	10,192,463	$	110,215	4.29%
Commercial real estate lending	7,312,645		134,370		7.29%	7,295,367		127,967		7.04%	6,768,054		78,887		4.62%
Total commercial	18,298,229		329,326		7.14%	18,194,703		312,047		6.88%	16,960,517		189,101		4.42%
Residential mortgage	8,807,157		74,643		3.39%	8,701,496		72,056		3.31%	8,223,531		64,069		3.12%
Auto finance	1,884,540		24,074		5.07%	1,654,523		19,701		4.78%	969,918		9,170		3.75%
Other retail	894,685		20,534		9.15%	887,574		20,135		9.08%	901,738		13,868		6.13%
Total loans	29,884,611		448,577		5.96%	29,438,297		423,939		5.77%	27,055,703		276,209		4.06%
Investment securities
Taxable	5,407,299		38,210		2.83%	5,304,381		35,845		2.70%	4,328,586		19,221		1.78%
Tax-exempt(a)	2,300,488		20,085		3.49%	2,314,825		20,152		3.48%	2,435,957		20,838		3.42%
Other short-term investments	483,211		6,575		5.40%	511,487		6,086		4.77%	378,528		3,284		3.45%
Investments and other	8,190,998		64,870		3.16%	8,130,693		62,083		3.05%	7,143,071		43,342		2.42%
Total earning assets	38,075,608		$	513,447	5.36%	37,568,991		$	486,022	5.18%	34,198,774		$	319,551	3.72%
Other assets, net	3,000,371					2,989,321					3,073,005
Total assets	$	41,075,980				$	40,558,311				$	37,271,779
Liabilities and stockholders' equity
Interest-bearing liabilities
Interest-bearing deposits
Savings	$	4,814,499	$	18,592	1.53%	$	4,749,808	$	15,160	1.28%	$	4,735,285	$	516	0.04%
Interest-bearing demand	6,979,071		41,980		2.39%	6,663,775		34,961		2.10%	6,587,404		10,306		0.62%
Money market	6,294,083		45,034		2.84%	6,743,810		43,529		2.59%	7,328,165		9,474		0.51%
Network transaction deposits	1,639,619		22,008		5.33%	1,468,006		18,426		5.03%	873,168		4,716		2.14%
Time deposits	5,955,741		65,517		4.36%	4,985,949		50,119		4.03%	1,230,859		989		0.32%
Total interest-bearing deposits	25,683,013		193,131		2.98%	24,611,348		162,196		2.64%	20,754,882		26,000		0.50%
Federal funds purchased and securities sold under agreements to repurchase	320,518		3,100		3.84%	285,754		2,261		3.17%	380,674		756		0.79%
Commercial paper	5,041		—		0.01%	12,179		—		0.01%	18,308		1		0.01%
FHLB advances	3,460,827		48,143		5.52%	3,796,106		49,261		5.20%	3,283,328		20,792		2.51%
Long-term funding	533,744		10,019		7.51%	543,003		9,596		7.07%	249,838		2,722		4.36%
Total short and long-term funding	4,320,130		61,263		5.63%	4,637,042		61,118		5.28%	3,932,149		24,270		2.45%
Total interest-bearing liabilities	30,003,143		$	254,394	3.36%	29,248,389		$	223,314	3.06%	24,687,031		$	50,270	0.81%
Noninterest-bearing demand deposits	6,318,781					6,669,787					8,119,475
Other liabilities	622,004					511,074					480,672
Stockholders’ equity	4,132,052					4,129,061					3,984,602
Total liabilities and stockholders’ equity	$	41,075,980				$	40,558,311				$	37,271,779
Interest rate spread					2.00%					2.12%					2.91%
Net free funds					0.71%					0.68%					0.22%
Fully tax-equivalent net interest income and net interest margin			$	259,053	2.71%			$	262,708	2.80%			$	269,281	3.13%
Fully tax-equivalent adjustment			4,810					4,791					4,843
Net interest income			$	254,244				$	257,917				$	264,439

(a) The yield on tax-exempt loans and securities is computed on a fully tax-equivalent basis using a tax rate of 21% and is net of the effects of certain disallowed interest deductions.

(b) Nonaccrual loans and loans held for sale have been included in the average balances.
(c) Interest income includes amortization of net deferred loan origination costs and net accreted purchase loan discount.

52

Notable Contributions to the Change in Net Interest Income

•Fully tax-equivalent net interest income and net interest income were $118 million, or 17%, and $118 million, or 18%, higher than the first nine months of 2022, respectively. Average loans increased $3.9 billion, or 15%, from the first nine months of 2022, and average investments and other short-term investments increased $608 million, or 8%, from the first nine months of 2022. The increase in net interest income was driven by a higher federal funds target rate combined with growth in all major loan categories. Since September 30, 2022, the Federal Reserve increased the federal funds target interest rate 225 bp, which contributed to the yield on earning assets increasing by 206 bp. See sections Interest Rate Risk and Quantitative and Qualitative Disclosures about Market Risk for a discussion of interest rate risk and market risk.

•    Average interest-bearing liabilities increased $5.5 billion, or 23%, compared to the first nine months of 2022. Average interest-bearing deposits increased $3.9 billion, or 19%, from the first nine months of 2022, primarily driven by increases in time deposits and network transaction deposits. Average noninterest-bearing demand deposits decreased $1.4 billion, or 17%, versus the first nine months of 2022. Average FHLB advances increased $1.4 billion, or 57%, from the first nine months of 2022, to fund balance sheet growth. The cost of interest-bearing liabilities increased 249 bp from the first nine months of 2022.

Provision for Credit Losses

The provision for credit losses is predominantly a function of the Corporation’s reserving methodology and judgments as to other qualitative and quantitative factors used to determine the appropriate level of the ACLL, which focuses on changes in the size and character of the loan portfolio, changes in levels of individually evaluated and other nonaccrual loans, historical losses and delinquencies in each portfolio category, the risk inherent in specific loans, concentrations of loans to specific borrowers or industries, existing economic conditions and economic forecasts, the fair value of underlying collateral, and other factors which could affect potential credit losses. The forecast the Corporation used for September 30, 2023 was the Moody's baseline scenario from August 2023, which was reviewed against the September 2023 baseline scenario with no material updates made, over a 2 year reasonable and supportable period with straight-line reversion to historical losses over the second year of the period. See additional discussion under the sections titled Loans, Credit Risk, Nonperforming Assets, and Allowance for Credit Losses on Loans.

Noninterest Income

Table 3 Noninterest Income

	Nine months ended						Three months ended										Changes vs
($ in thousands, except as noted)	Sep 30, 2023		Sep 30, 2022		YTD % Change		Sep 30, 2023		Jun 30, 2023		Mar 31, 2023		Dec 31, 2022		Sep 30, 2022		Jun 30, 2023		Sep 30, 2022
Wealth management fees	$	61,499	$	63,719	(3)	%	$	20,828	$	20,483	$	20,189	$	20,403	$	19,984	2	%	4	%
Service charges and deposit account fees	38,230		48,392		(21)	%	12,864		12,372		12,994		13,918		15,029		4	%	(14)	%
Card-based fees	33,492		32,847		2	%	11,510		11,396		10,586		11,167		11,479		1	%	—	%
Other fee-based revenue	13,249		12,613		5	%	4,509		4,465		4,276		3,290		4,487		1	%	—	%
Total fee-based revenue	146,470		157,571		(7)	%	49,710		48,715		48,045		48,779		50,979		2	%	(2)	%
Capital markets, net	15,544		24,331		(36)	%	5,368		5,093		5,083		5,586		7,675		5	%	(30)	%
Mortgage banking, net	17,814		16,635		7	%	6,501		7,768		3,545		2,238		2,098		(16)	%	N/M
Bank and corporate owned life insurance	6,882		8,004		(14)	%	2,047		2,172		2,664		3,427		1,827		(6)	%	12	%
Other	6,841		6,613		3	%	2,339		2,080		2,422		4,102		2,527		12	%	(7)	%
Subtotal	193,551		213,154		(9)	%	65,965		65,827		61,758		64,132		65,106		—	%	1	%
Asset gains (losses), net	590		1,883		(69)	%	625		(299)		263		(545)		18		N/M		N/M
Investment securities gains (losses), net	55		5,676		(99)	%	(11)		14		51		(1,930)		5,664		N/M		N/M
Total noninterest income	$	194,195	$	220,713	(12)	%	$	66,579	$	65,543	$	62,073	$	61,657	$	70,788	2	%	(6)	%
Mortgage loans originated for sale during period	$	283,469	$	535,694	(47)	%	$	115,075	$	99,141	$	69,254	$	64,419	$	131,743	16	%	(13)	%
Mortgage loan settlements during period	254,619		620,352		(59)	%	103,452		96,514		54,652		94,682		119,942		7	%	(14)	%
Assets under management, at market value(a)							12,543		12,995		12,412		11,843		11,142		(3)	%	13	%

N/M = Not Meaningful
(a) $ in millions. Excludes assets held in brokerage accounts.

53

Notable Contributions to the Change in Noninterest Income

•Service charges and deposit account fees decreased $10 million from the first nine months of 2022, primarily due to the reduction and elimination of many deposit account fees in the third quarter of 2022.

•Capital markets, net decreased $9 million from the first nine months of 2022, as a result of lower interest rate swap revenue and syndication fees.

•Wealth management fees decreased $2 million from the first nine months of 2022, mainly driven by market conditions.

Noninterest Expense

Table 4 Noninterest Expense

	Nine months ended						Three months ended										Change vs
($ in thousands)	Sep 30, 2023		Sep 30, 2022		YTD % Change		Sep 30, 2023		Jun 30, 2023		Mar 31, 2023		Dec 31, 2022		Sep 30, 2022		Jun 30, 2023		Sep 30, 2022
Personnel	$	347,669	$	335,720	4	%	$	117,159	$	114,089	$	116,420	$	118,381	$	118,243	3	%	(1)	%
Technology	73,990		65,401		13	%	26,172		24,220		23,598		25,299		22,694		8	%	15	%
Occupancy	42,775		43,948		(3)	%	14,125		13,587		15,063		15,846		13,717		4	%	3	%
Business development and advertising	20,054		17,388		15	%	7,100		7,106		5,849		8,136		6,778		—	%	5	%
Equipment	14,921		14,841		1	%	5,016		4,975		4,930		4,791		4,921		1	%	2	%
Legal and professional	13,149		14,118		(7)	%	4,461		4,831		3,857		4,132		4,159		(8)	%	7	%
Loan and foreclosure costs	4,822		5,121		(6)	%	2,049		1,635		1,138		804		1,631		25	%	26	%
FDIC assessment	25,575		16,300		57	%	9,150		9,550		6,875		6,350		5,800		(4)	%	58	%
Other intangible amortization	6,608		6,608		—	%	2,203		2,203		2,203		2,203		2,203		—	%	—	%
Other	24,726		31,057		(20)	%	8,771		8,476		7,479		10,618		15,645		3	%	(44)	%
Total noninterest expense	$	574,291	$	550,503	4	%	$	196,205	$	190,673	$	187,412	$	196,560	$	195,791	3	%	—	%
Average FTEs(a)	4,222		4,101		3	%	4,220		4,227		4,219		4,169		4,182		—	%	1	%

(a) Average FTEs without overtime

Notable Contributions to the Change in Noninterest Expense

•Personnel expense increased $12 million from the first nine months of 2022, largely as a result of increased FTEs due to hiring related to previously announced initiatives and continued investment in our employees.

•FDIC expense increased $9 million from the first nine months of 2022, primarily driven by the FDIC's assessment rate change on January 1, 2023. The Corporation is expecting additional FDIC assessment expense associated with the special assessment that was proposed by the FDIC in May 2023. The proposal would assess a 12.5 bp annual special assessment on the Bank's uninsured deposits reported in the Call Report for December 31, 2022, excluding the first $5 billion of uninsured deposits, and would be in place for two years. The Bank's Call Report uninsured deposits at December 31, 2022 were $15.7 billion. Once an assessment is approved, the full expense for the two year period will be recognized.

•Technology expense increased $9 million from the first nine months of 2022, driven by digital investments tied to our strategic initiatives.

Income Taxes

The Corporation recognized income tax expense of $70 million for the nine months ended September 30, 2023, compared to income tax expense of $68 million for the nine months ended September 30, 2022. The Corporation's effective tax rate was 20.43% for the first nine months of 2023, compared to an effective tax rate of 20.94% for the first nine months of 2022. The increase in income tax expense during the first nine months of 2023 was primarily driven by an increase in income before tax. The decrease in the effective tax rate was primarily driven by a decrease in state tax expense. The Corporation expects a full year effective tax rate of 20 to 21%, assuming no change in the statutory corporate tax rate.

Income tax expense recorded on the consolidated statements of income involves the interpretation and application of certain accounting pronouncements and federal and state tax laws and regulations. The Corporation is subject to examination by various taxing authorities. Examination by taxing authorities may impact the amount of tax expense and/or the reserve for uncertainty in income taxes if their interpretations differ from those of management, based on their judgments about information available to them at the time of their examinations.

54

Balance Sheet Analysis

•At September 30, 2023, total assets were $41.6 billion, up $2.2 billion, or 6%, from December 31, 2022, and up $3.6 billion, or 9%, from September 30, 2022.

•Interest bearing deposits in other financial institutions were $323 million at September 30, 2023, up $166 million, or 106%, from December 31, 2022, and up $211 million, or 188%, from September 30, 2022.

•AFS investment securities, at fair value were $3.5 billion at September 30, 2023, up $750 million, or 27%, from December 31, 2022, and up $1.0 billion, or 40%, from September 30, 2022. HTM investment securities, net, at amortized cost were $3.9 billion at September 30, 2023, down $60 million, or 2%, from December 31, 2022, and down $51 million, or 1%, from September 30, 2022. See Note 5 Investment Securities of the notes to consolidated financial statements for additional details.

•Loans of $30.2 billion at September 30, 2023 were up $1.4 billion, or 5%, from December 31, 2022, and up $2.4 billion, or 9%, from September 30, 2022. See Note 6 Loans of the notes to consolidated financial statements for additional details.

•At September 30, 2023, total deposits of $32.1 billion were up $2.5 billion, or 8%, from December 31, 2022, and were up $2.9 billion, or 10%, from September 30, 2022. See section Deposits and Customer Funding for additional information on deposits.

•Federal funds purchased and securities sold under agreements to repurchase were $452 million at September 30, 2023, down $133 million, or 23%, from December 31, 2022, and up $175 million, or 63%, from September 30, 2022. See Note 8 Short and Long-Term Funding of the notes to consolidated financial statements for additional details.

•FHLB advances were $3.7 billion at September 30, 2023, down $587 million, or 14%, from December 31, 2022, and down $44 million, or 1%, from September 30, 2022. See Note 8 Short and Long-Term Funding of the notes to consolidated financial statements for additional details.

•Other long-term funding was $529 million at September 30, 2023, up $281 million, or 113%, from December 31, 2022, and up $280 million, or 112%, from September 30, 2022, primarily driven by the Corporation's issuance of subordinated notes in February 2023. See Note 8 Short and Long-Term Funding of the notes to consolidated financial statements for additional details.

Loans

Table 5 Period End Loan Composition

	Sep 30, 2023				Jun 30, 2023				Mar 31, 2023				Dec 31, 2022				Sep 30, 2022
($ in thousands)	Amount		% of Total		Amount		% of Total		Amount		% of Total		Amount		% of Total		Amount		% of Total
Commercial and industrial	$	10,099,068	33	%	$	10,055,487	34	%	$	9,869,781	34	%	$	9,759,454	34	%	$	9,571,925	34	%
Commercial real estate — owner occupied	1,054,969		3	%	1,058,237		4	%	1,050,236		4	%	991,722		3	%	999,786		4	%
Commercial and business lending	11,154,037		37	%	11,113,724		37	%	10,920,017		37	%	10,751,176		37	%	10,571,711		38	%
Commercial real estate — investor	5,218,980		17	%	5,312,928		18	%	5,094,249		17	%	5,080,344		18	%	5,064,289		18	%
Real estate construction	2,130,719		7	%	2,009,060		7	%	2,147,070		7	%	2,155,222		7	%	1,835,159		7	%
Commercial real estate lending	7,349,699		24	%	7,321,988		25	%	7,241,318		25	%	7,235,565		25	%	6,899,449		25	%
Total commercial	18,503,736		61	%	18,435,711		62	%	18,161,335		62	%	17,986,742		62	%	17,471,159		63	%
Residential mortgage	8,782,645		29	%	8,746,345		29	%	8,605,164		29	%	8,511,550		30	%	8,314,902		30	%
Auto finance	2,007,164		7	%	1,777,974		6	%	1,551,538		5	%	1,382,073		5	%	1,117,136		4	%
Home equity	623,650		2	%	615,506		2	%	609,787		2	%	624,353		2	%	612,608		2	%
Other consumer	275,993		1	%	273,367		1	%	279,248		1	%	294,851		1	%	301,475		1	%
Total consumer	11,689,451		39	%	11,413,193		38	%	11,045,737		38	%	10,812,828		38	%	10,346,121		37	%
Total loans	$	30,193,187	100	%	$	29,848,904	100	%	$	29,207,072	100	%	$	28,799,569	100	%	$	27,817,280	100	%

The Corporation has long-term guidelines relative to the proportion of Commercial and Business, CRE, and Consumer loan commitments within the overall loan portfolio, with each targeted to represent 30 to 40% of the overall loan portfolio. The targeted long-term guidelines were unchanged during 2022 and the first nine months of 2023. Furthermore, certain sub-asset classes within the respective portfolios are further defined and dollar limitations are placed on these sub-portfolios. These guidelines and limits are reviewed quarterly and approved annually by the Enterprise Risk Committee of the Corporation’s Board of Directors. These guidelines and limits are designed to create balance and diversification within the loan portfolios.

55

The Corporation’s loan distribution and interest rate sensitivity as of September 30, 2023 are summarized in the following table:

Table 6 Loan Distribution and Interest Rate Sensitivity

($ in thousands)	Within 1 Year(a)		1-5 Years		5-15 Years		Over 15 Years		Total		% of Total
Commercial and industrial	$	9,181,210	$	652,572	$	256,501	$	8,784	$	10,099,068	33	%
Commercial real estate — owner occupied	652,639		279,043		122,993		295		1,054,969		3	%
Commercial real estate — investor	4,846,003		226,962		146,015		—		5,218,980		17	%
Real estate construction	2,048,329		43,915		29,697		8,779		2,130,719		7	%
Commercial - adjustable	11,413,802		29,485		8,026		—		11,451,314		38	%
Commercial - fixed	5,314,379		1,173,006		547,180		17,857		7,052,422		23	%
Residential mortgage - adjustable	316,708		1,020,151		1,883,429		301		3,220,588		11	%
Residential mortgage - fixed	5,576		86,514		538,718		4,931,249		5,562,057		18	%
Auto finance	369		733,245		1,273,550		—		2,007,164		7	%
Home equity	564,104		11,253		39,252		9,041		623,650		2	%
Other consumer	201,452		36,438		25,150		12,953		275,993		1	%
Total loans	$	17,816,390	$	3,090,092	$	4,315,305	$	4,971,401	$	30,193,187	100	%
Fixed-rate	$	5,329,729	$	2,039,525	$	2,423,850	$	4,971,100	$	14,764,204	49	%
Floating or adjustable rate	12,486,661		1,050,567		1,891,455		301		15,428,984		51	%
Total	$	17,816,390	$	3,090,092	$	4,315,305	$	4,971,401	$	30,193,187	100	%

(a) Demand loans, past due loans, overdrafts, and credit cards are reported in the “Within 1 Year” category.

At September 30, 2023, $20.8 billion, or 69%, of the loans outstanding and $16.8 billion, or 91%, of the commercial loans outstanding were floating rate, adjustable rate, re-pricing within one year, or maturing within one year.

Credit Risk

An active credit risk management process is used for commercial loans to ensure that sound and consistent credit decisions are made. Credit risk is controlled by detailed underwriting procedures, comprehensive loan administration, and periodic review of borrowers’ outstanding loans and commitments. Borrower relationships are formally reviewed and graded on an ongoing basis for early identification of potential problems. Further analysis by customer, industry, and geographic location are performed to monitor trends, financial performance, and concentrations. See Note 6 Loans of the notes to consolidated financial statements for additional information on managing overall credit quality.

The loan portfolio is widely diversified by types of borrowers, industry groups, and market areas within the Corporation's branch footprint. Significant loan concentrations are considered to exist when there are amounts loaned to numerous borrowers engaged in similar activities that would cause them to be similarly impacted by economic or other conditions. At September 30, 2023, no significant concentrations existed in the Corporation’s portfolio in excess of 10% of total loan exposure.

Commercial and business lending: The commercial and business lending classification primarily includes commercial loans to large corporations, middle market companies, small businesses, and asset-based and equipment financing.

Table 7 Largest Commercial and Industrial Industry Group Exposures, by NAICS Subsector

September 30, 2023	NAICS Subsector	Outstanding Balance		Total Exposure		% of Total Loan Exposure
Real Estate(a)	531	$	1,872,397	$	3,482,921	8	%
Utilities(b)	221	2,295,402		2,690,573		6	%
Credit Intermediation and Related Activities(c)	522	1,019,466		1,916,996		5	%
Merchant Wholesalers, Durable Goods	423	498,039		929,829		2	%

(a) Includes REIT lines.

(b) 52% of the total exposure comes from renewable energy sources (wind, solar, hydroelectric, and geothermal).

(c) Includes mortgage warehouse lines.

The remaining commercial and industrial portfolio is spread over a diverse range of industries, none of which exceed 2% of total loan exposure.

The CRE-owner occupied portfolio is spread over a diverse range of industries, none of which exceed 2% of total loan exposure.

The credit risk related to commercial and business lending is largely influenced by general economic conditions and the resulting impact on a borrower’s operations or on the value of underlying collateral, if any.

56

Commercial real estate - investor: CRE-investor is comprised of loans secured by various non-owner occupied or investor income producing property types.

Table 8 Largest Commercial Real Estate Investor Property Type Exposures

September 30, 2023	% of Total Loan Exposure		% of Total Commercial Real Estate - Investor Loan Exposure
Multi-Family	5	%	35	%
Industrial	3	%	24	%
Office	3	%	21	%

The remaining CRE-investor portfolio is spread over various other property types, none of which exceed 2% of total loan exposure.

Credit risk is managed in a similar manner to commercial and business lending by employing sound underwriting guidelines, lending primarily to borrowers in local markets and businesses, periodically evaluating the underlying collateral, and formally reviewing the borrower’s financial soundness and relationship on an ongoing basis.

Real estate construction: Real estate construction loans are primarily short-term or interim loans that provide financing for the acquisition or development of commercial income properties, multi-family projects, or residential development, both single family and condominium. Real estate construction loans are made to developers and project managers who are generally well known to the Corporation and have prior successful project experience. The credit risk associated with real estate construction loans is generally confined to specific geographic areas but is also influenced by general economic conditions. The Corporation controls the credit risk on these types of loans by making loans in familiar markets to developers, reviewing the merits of individual projects, controlling loan structure, and monitoring project progress and construction advances.

Table 9 Largest Real Estate Construction Property Type Exposures

September 30, 2023	% of Total Loan Exposure		% of Total Real Estate Construction Loan Exposure
Multi-Family	5	%	43	%
Industrial	3	%	25	%

The remaining real estate construction portfolio is spread over various other property types, none of which exceed 2% of total loan exposure.

The Corporation’s current lending standards for CRE and real estate construction lending are determined by property type and specifically address many criteria, including: maximum loan amounts, maximum LTV, requirements for pre-leasing and/or presales, minimum borrower equity, and maximum loan-to-cost. Currently, the maximum standard for LTV is 80%, with lower limits established for certain higher risk types, such as raw land that has a 50% LTV maximum. The Corporation’s LTV guidelines are in compliance with regulatory supervisory limits. In most cases, for real estate construction loans, the loan amounts include interest reserves, which are built into the loans and sized to fund loan payments through construction and lease up and/or sell out.

Residential mortgages: Residential mortgage loans are primarily first lien home mortgages with a maximum loan-to-collateral value without credit enhancement (e.g. private mortgage insurance) of 80%. The residential mortgage portfolio is focused primarily in the Corporation's three-state branch footprint, with approximately 87% of the outstanding loan balances in the Corporation's branch footprint at September 30, 2023. The rates on adjustable rate mortgages adjust based upon the movement in the underlying index which is then added to a margin and rounded to the nearest 0.125%. That result is then subjected to any periodic caps to produce the borrower's interest rate for the coming term. Most of the adjustable rate mortgages have an initial fixed rate term of 3, 5, 7 or 10 years.

The Corporation generally retains certain fixed-rate residential real estate mortgages in its loan portfolio, including retail and private banking jumbo mortgages and CRA-related mortgages. As part of management’s historical practice of originating and servicing residential mortgage loans, generally the Corporation’s 30 year, agency conforming, fixed-rate residential real estate mortgage loans have been sold in the secondary market with servicing rights retained. Subject to management’s analysis of the current interest rate environment, among other market factors, the Corporation may choose to retain mortgage loan production on its balance sheet.

The Corporation’s underwriting and risk-based pricing guidelines for residential mortgage loans include minimum borrower FICO score and maximum LTV of the property securing the loan. Residential mortgage products generally are underwritten using FHLMC and FNMA secondary marketing guidelines.

57

Home equity: Home equity consists of both home equity lines of credit and closed-end home equity loans. The Corporation’s credit risk monitoring guidelines for home equity are based on an ongoing review of loan delinquency status, as well as a quarterly review of FICO score deterioration and property devaluation. The Corporation does not routinely obtain appraisals on performing loans to update LTV ratios after origination; however, the Corporation monitors the local housing markets by reviewing the various home price indices and incorporates the impact of the changing market conditions in its ongoing credit monitoring process. For junior lien home equity loans, the Corporation is unable to track the performance of the first lien loan if it does not own or service the first lien loan. However, the Corporation obtains a refreshed FICO score on a quarterly basis and monitors this as part of its assessment of the home equity portfolio.

The Corporation’s underwriting and risk-based pricing guidelines for home equity lines of credit and loans consist of a combination of both borrower FICO score and the original cumulative LTV against the property securing the loan. Currently, the Corporation's policy sets the maximum acceptable LTV at 90%. The Corporation's current home equity line of credit offering is priced based on floating rate indices and generally allows 10 years of interest-only payments followed by a 20-year amortization of the outstanding balance. The loans in the Corporation's portfolio generally have an original term of 20 years with principal and interest payments required.

Indirect Auto: The Corporation currently purchases retail auto sales contracts via a network of approved auto dealerships across 14 states throughout the Northeast, Mid-Atlantic, and Midwestern United States. The auto dealerships finance the sale of automobiles as the initial lender and then assign the contracts to the Corporation pursuant to dealer agreements. The Corporation’s underwriting and pricing guidelines are based on a dual risk grade derived from a combination of FICO auto score and proprietary internal custom score. Minimum grade and FICO score standards ensure the credit risk is appropriately managed to the Corporation’s risk appetite. Further, the grade influences loan-specific parameters such as vehicle age, term, LTV, loan amount, mileage, payment and debt service thresholds, and pricing. Maximum loan terms offered are 84 months on select grades with vehicle age, mileage, and other limitations in place to qualify. The program is designed to capture primarily prime and super prime contracts. Over time, the Corporation expects roughly 60% of originations to be secured by used vehicles.

Other consumer: Other consumer consists of student loans, short-term personal installment loans, and credit cards. The Corporation had $67 million and $76 million of student loans at September 30, 2023 and December 31, 2022, respectively, the majority of which are government guaranteed. Federally guaranteed student loan payments resumed in October 2023 after over three years of payment moratoriums that began as a result of the COVID-19 pandemic. The Corporation is not originating new student loans and the student loan portfolio is in run-off. Credit risk for non-government guaranteed student loans, short-term personal installment loans, and credit cards is influenced by general economic conditions, the characteristics of individual borrowers, and the nature of the loan collateral. Risks of loss are generally on smaller average balances per loan spread over many borrowers. Once charged off, there is usually less opportunity for recovery of these smaller consumer loans. Credit risk is primarily controlled by reviewing the creditworthiness of the borrowers, monitoring payment histories, and taking appropriate collateral and guarantee positions.

58

Nonperforming Assets

Management is committed to a proactive nonaccrual and problem loan identification philosophy. This philosophy is implemented through the ongoing monitoring and review of all pools of risk in the loan portfolio to ensure that problem loans are identified quickly and the risk of loss is minimized. Table 10 provides detailed information regarding NPAs, which include nonaccrual loans, OREO, and repossessed assets:

Table 10 Nonperforming Assets

($ in thousands)	Sep 30, 2023			Jun 30, 2023			Mar 31, 2023			Dec 31, 2022			Sep 30, 2022
Nonperforming assets
Commercial and industrial	$	74,812		$	34,907		$	22,735		$	14,329		$	15,576
Commercial real estate — owner occupied	3,936			1,444			1,478			—			—
Commercial and business lending	78,748			36,352			24,213			14,329			15,576
Commercial real estate — investor	10,882			22,068			25,122			29,380			37,479
Real estate construction	103			125			178			105			141
Commercial real estate lending	10,985			22,193			25,300			29,485			37,620
Total commercial	89,732			58,544			49,513			43,814			53,196
Residential mortgage	66,153			61,718			58,274			58,480			55,485
Auto finance	4,533			3,065			2,436			1,490			302
Home equity	7,917			7,788			7,246			7,487			7,325
Other consumer	222			163			100			197			98
Total consumer	78,826			72,733			68,056			67,654			63,210
Total nonaccrual loans	168,558			131,278			117,569			111,467			116,406
Commercial real estate owned	1,062			1,062			3,071			325			325
Residential real estate owned	989			870			2,987			2,878			2,560
Bank properties real estate owned(a)	6,400			5,643			9,125			11,580			13,487
OREO	8,452			7,575			15,184			14,784			16,373
Repossessed assets	658			348			92			215			299
Total nonperforming assets	$	177,668		$	139,201		$	132,845		$	126,466		$	133,078
Accruing loans past due 90 days or more
Commercial	$	441		$	366		$	323		$	282		$	121
Consumer	1,715			1,360			1,380			1,446			1,297
Total accruing loans past due 90 days or more	$	2,156		$	1,726		$	1,703		$	1,728		$	1,417
Restructured loans (accruing)(b)
Commercial	$	234		$	168		$	47		$	13,093		$	16,097
Consumer	1,855			1,271			716			19,775			19,036
Total restructured loans (accruing)	$	2,089		$	1,439		$	763		$	32,868		$	35,132
Nonaccrual restructured loans (included in nonaccrual loans)(b)	$	961		$	796		$	341		$	20,127		$	21,650
Ratios
Nonaccrual loans to total loans	0.56		%	0.44		%	0.40		%	0.39		%	0.42		%
NPAs to total loans plus OREO and repossessed assets	0.59		%	0.47		%	0.45		%	0.44		%	0.48		%
NPAs to total assets	0.43		%	0.34		%	0.33		%	0.32		%	0.35		%
Allowance for credit losses on loans to nonaccrual loans	225.78		%	287.20		%	311.48		%	315.34		%	285.79		%

59

Table 10 Nonperforming Assets (continued)

($ in thousands)	Sep 30, 2023		Jun 30, 2023		Mar 31, 2023		Dec 31, 2022		Sep 30, 2022
Accruing loans 30-89 days past due
Commercial and industrial	$	1,507	$	12,005	$	4,239	$	6,283	$	1,861
Commercial real estate — owner occupied	1,877		1,484		2,955		230		—
Commercial and business lending	3,384		13,489		7,195		6,512		1,861
Commercial real estate — investor	10,121		—		—		1,067		—
Real estate construction	10		76		—		39		43
Commercial real estate lending	10,131		76		—		1,105		43
Total commercial	13,515		13,565		7,195		7,618		1,904
Residential mortgage	11,652		8,961		7,626		9,874		6,517
Auto finance	16,688		11,429		8,640		9,408		6,206
Home equity	3,687		4,030		4,113		5,607		4,234
Other consumer	1,880		2,025		1,723		1,610		1,592
Total consumer	33,908		26,444		22,102		26,499		18,549
Total accruing loans 30-89 days past due	$	47,422	$	40,008	$	29,297	$	34,117	$	20,452
Potential problem loans
Commercial and industrial	$	207,237	$	205,228	$	135,047	$	136,549	$	108,556
Commercial real estate — owner occupied	27,792		29,396		32,077		34,422		28,287
Commercial and business lending	235,029		234,624		167,124		170,971		136,843
Commercial real estate — investor	148,840		106,662		89,653		92,535		117,982
Real estate construction	—		—		—		970		—
Commercial real estate lending	148,840		106,662		89,653		93,505		117,982
Total commercial	383,869		341,286		256,776		264,476		254,825
Residential mortgage	1,247		1,646		1,684		1,978		2,845
Home equity	236		240		244		197		185
Total consumer	1,483		1,886		1,928		2,175		3,030
Total potential problem loans	$	385,352	$	343,173	$	258,704	$	266,651	$	257,855

(a) Primarily closed branches and other bank operated real estate facilities, pending disposition.

(b) On January 1, 2023, the Corporation adopted ASU 2022-02. Under this update, TDRs were eliminated and replaced with a modified loan classification. As a result, amounts reported for March 31, 2023 and forward will not be comparable to prior period reported amounts.

Nonaccrual loans: Nonaccrual loans are considered to be one indicator of potential future loan losses. See Note 6 Loans of the notes to consolidated financial statements for additional nonaccrual loan disclosures. See also sections Credit Risk and Allowance for Credit Losses on Loans.

Accruing loans past due 90 days or more: Loans past due 90 days or more but still accruing interest are classified as such where the underlying loans are both well secured (the collateral value is sufficient to cover principal and accrued interest) and are in the process of collection.

Restructured loans: Loans are considered restructured loans if concessions have been granted to borrowers that are experiencing financial difficulty. On January 1, 2023, the Corporation adopted ASU 2022-02 prospectively. As a result, loans that were restructured prior to adoption are no longer considered TDRs, and loans restructured since January 1, 2023 are considered restructured. As a result, periods prior to 2023 are no longer comparable. See also Note 6 Loans of the notes to consolidated financial statements for additional restructured loans disclosures.

Potential problem loans: The level of potential problem loans is another predominant factor in determining the relative level of risk in the loan portfolio and in determining the appropriate level of the ACLL. Potential problem loans are generally defined by management to include loans rated as substandard by management that are collectively evaluated; however, there are circumstances present to create doubt as to the ability of the borrower to comply with present repayment terms. The decision of management to include performing loans in potential problem loans does not necessarily mean that the Corporation expects losses to occur, but that management recognizes a higher degree of risk associated with these loans.

OREO: Management actively seeks to ensure OREO properties held are monitored to minimize the Corporation’s risk of loss.

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Allowance for Credit Losses on Loans

Credit risks within the loan portfolio are inherently different for each loan type. Credit risk is controlled and monitored through the use of lending standards, a thorough review of potential borrowers, and ongoing review of loan payment performance. Active asset quality administration, including early problem loan identification and timely resolution of problems, aids in the management of credit risk and the minimization of loan losses. Credit risk management for each loan type is discussed in the section entitled Credit Risk. See Note 6 Loans of the notes to consolidated financial statements for additional disclosures on the ACLL.

To assess the appropriateness of the ACLL, the Corporation focuses on the evaluation of many factors, including but not limited to: evaluation of facts and issues related to specific loans, management’s ongoing review and grading of the loan portfolio, credit report refreshes, consideration of historical loan loss and delinquency experience on each portfolio category, trends in past due and nonaccrual loans, the level of potential problem loans, the risk characteristics of the various classifications of loan segments, changes in the size and character of the loan portfolio, concentrations of loans to specific borrowers or industries, existing economic conditions and economic forecasts, the fair value of underlying collateral, funding assumptions on lines, and other qualitative and quantitative factors which could affect potential credit losses. The forecast the Corporation used for September 30, 2023 was the Moody's baseline scenario from August 2023, which was reviewed against the September 2023 baseline scenario with no material updates made, over a 2 year reasonable and supportable period with straight-line reversion to historical losses over the second year of the period. Assessing these factors involves significant judgment. Because each of the criteria used is subject to change, the ACLL is not necessarily indicative of the trend of future credit losses on loans in any particular segment. Therefore, management considers the ACLL a critical accounting estimate, see section Critical Accounting Estimates for additional information on the ACLL. See section Nonperforming Assets for a detailed discussion on asset quality. See also Note 6 Loans of the notes to consolidated financial statements for additional ACLL disclosures. Table 5 provides information on loan growth and period end loan composition, Table 10 provides additional information regarding NPAs, and Table 11 and Table 12 provide additional information regarding activity in the ACLL.

The loan segmentation used in calculating the ACLL at September 30, 2023 and December 31, 2022 was generally comparable. The methodology to calculate the ACLL consists of the following components: a valuation allowance estimate is established for commercial and consumer loans determined by the Corporation to be individually evaluated, using discounted cash flows, estimated fair value of underlying collateral, and/or other data available. Loans are segmented for criticized loan pools by loan type as well as for non-criticized loan pools by loan type, primarily based on risk rating rates after considering loan type, historical loss and delinquency experience, credit quality, and industry classifications. Loans that have been criticized are considered to have a higher risk of default than non-criticized loans, as circumstances were present to support the lower loan grade, warranting higher loss factors. Additionally, management allocates ACLL to absorb losses that may not be provided for by the other components due to qualitative factors evaluated by management, such as limitations within the credit risk grading process, known current economic or business conditions that may not yet show in trends, industry or other concentrations with current issues that impose higher inherent risks than are reflected in the loss factors, and other relevant considerations. The total allowance is available to absorb losses from any segment of the loan portfolio.

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Table 11 Allowance for Credit Losses on Loans

	YTD				Quarter Ended
($ in thousands)	Sep 30, 2023		Sep 30, 2022		Sep 30, 2023			Jun 30, 2023			Mar 31, 2023			Dec 31, 2022			Sep 30, 2022
Allowance for loan losses
Balance at beginning of period	$	312,720	$	280,015	$	338,750		$	326,432		$	312,720		$	292,904		$	280,771
Provision for loan losses	66,000		13,000		25,500			23,500			17,000			21,000			14,000
Charge offs	(40,891)		(7,165)		(20,535)			(14,855)			(5,501)			(2,982)			(3,346)
Recoveries	7,965		7,054		2,079			3,674			2,212			1,798			1,478
Net (charge offs) recoveries	(32,925)		(111)		(18,455)			(11,181)			(3,289)			(1,183)			(1,867)
Balance at end of period	$	345,795	$	292,904	$	345,795		$	338,750		$	326,432		$	312,720		$	292,904
Allowance for unfunded commitments
Balance at beginning of period	$	38,776	$	39,776	$	38,276		$	39,776		$	38,776		$	39,776		$	36,776
Provision for unfunded commitments	(4,000)		—		(3,500)			(1,500)			1,000			(1,000)			3,000
Balance at end of period	$	34,776	$	39,776	$	34,776		$	38,276		$	39,776		$	38,776		$	39,776
Allowance for credit losses on loans	$	380,571	$	332,680	$	380,571		$	377,027		$	366,208		$	351,496		$	332,680
Provision for credit losses on loans	62,000		13,000		22,000			22,000			18,000			20,000			17,000
Net loan (charge offs) recoveries
Commercial and industrial	(29,494)		512		(16,558)			(11,177)			(1,759)			278			(897)
Commercial real estate — owner occupied	8		10		2			3			3			3			3
Commercial and business lending	(29,487)		523		(16,556)			(11,174)			(1,756)			281			(894)
Commercial real estate — investor	2,547		—		272			2,276			—			—			—
Real estate construction	18		43		18			(18)			18			16			9
Commercial real estate lending	2,565		43		290			2,257			18			16			9
Total commercial	(26,921)		565		(16,266)			(8,917)			(1,738)			297			(885)
Residential mortgage	(358)		465		(22)			(283)			(53)			(125)			(42)
Auto finance	(3,273)		(175)		(1,269)			(1,048)			(957)			(768)			(165)
Home equity	652		675		128			183			340			123			(101)
Other consumer	(3,025)		(1,642)		(1,027)			(1,117)			(881)			(711)			(675)
Total consumer	(6,004)		(676)		(2,189)			(2,264)			(1,550)			(1,480)			(983)
Total net (charge offs) recoveries	$	(32,925)	$	(111)	$	(18,455)		$	(11,181)		$	(3,289)		$	(1,183)		$	(1,867)
Ratios
Allowance for credit losses on loans to total loans					1.26		%	1.26		%	1.25		%	1.22		%	1.20		%
Allowance for credit losses on loans to net charge offs (annualized)	8.6x		N/M		5.2x			8.4x			27.5x			74.9x			44.9x
Loan evaluation method for ACLL
Individually evaluated for impairment					$	11,033		$	12,268		$	11,585		$	10,324		$	15,739
Collectively evaluated for impairment					369,538			364,759			354,623			341,172			316,942
Total ACLL					$	380,571		$	377,027		$	366,208		$	351,496		$	332,680
Loan balance
Individually evaluated for impairment					$	86,195		$	58,109		$	48,934		$	76,577		$	87,712
Collectively evaluated for impairment					30,106,993			29,790,795			29,158,138			28,722,992			27,729,568
Total loan balance					$	30,193,187		$	29,848,904		$	29,207,072		$	28,799,569		$	27,817,280

N/M = Not Meaningful

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Table 12 Annualized Net (Charge Offs) Recoveries(a)

	YTD		Quarter Ended
(In basis points)	Sep 30, 2023	Sep 30, 2022	Sep 30, 2023	Jun 30, 2023	Mar 31, 2023	Dec 31, 2022	Sep 30, 2022
Net loan (charge offs) recoveries
Commercial and industrial	(40)	1	(66)	(46)	(7)	1	(4)
Commercial real estate — owner occupied	—	—	—	—	—	—	—
Commercial and business lending	(36)	1	(60)	(41)	(7)	1	(3)
Commercial real estate — investor	7	—	2	18	—	—	—
Real estate construction	—	—	—	—	—	—	—
Commercial real estate lending	5	—	2	12	—	—	—
Total commercial	(20)	—	(35)	(20)	(4)	1	(2)
Residential mortgage	(1)	1	—	(1)	—	(1)	—
Auto finance	(26)	(4)	(27)	(25)	(26)	(24)	(7)
Home equity	14	15	8	12	22	8	(7)
Other consumer	(145)	(74)	(148)	(163)	(125)	(95)	(89)
Total consumer	(7)	(1)	(7)	(8)	(6)	(6)	(4)
Total net (charge offs) recoveries	(15)	—	(25)	(15)	(5)	(2)	(3)

(a) Annualized ratio of net charge offs to average loans by loan type.

Notable Contributions to the Change in the Allowance for Credit Losses on Loans

•Total loans increased $1.4 billion, or 5%, from December 31, 2022, and increased $2.4 billion, or 9%, from September 30, 2022. The increase from September 30, 2022 was driven by growth across nearly all major loan portfolios resulting from the Corporation's strategic initiatives. See also Note 6 Loans of the notes to consolidated financial statements for additional information on loans.

•Potential problem loans increased $119 million, or 45%, from December 31, 2022, and increased $127 million, or 49%, from September 30, 2022. The increases from both December 31, 2022 and September 30, 2022 were primarily driven by increases in potential problem loans within commercial and industrial and CRE-investor lending. See Table 10 for additional information regarding potential problem loans.

•Total nonaccrual loans increased $57 million, or 51%, from December 31, 2022, and increased $52 million, or 45%, from September 30, 2022. The increases from both December 31, 2022 and September 30, 2022 were primarily due to increases in nonaccrual loans within commercial and industrial lending and residential mortgage lending, partially offset by decreases within CRE-investor lending. See Note 6 Loans of the notes to consolidated financial statements and Table 10 for additional disclosures on the changes in asset quality.

•YTD net charge offs increased $33 million from September 30, 2022, primarily driven by an increase in net charge offs within commercial and industrial lending. See Table 11 and Table 12 for additional information on the activity in the ACLL.

Management believes the level of ACLL to be appropriate at September 30, 2023.

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Deposits and Customer Funding

The following table summarizes the composition of our deposits and customer funding:

Table 13 Period End Deposit and Customer Funding Composition

	Sep 30, 2023				Jun 30, 2023				Mar 31, 2023				Dec 31, 2022				Sep 30, 2022
($ in thousands)	Amount		% of Total		Amount		% of Total		Amount		% of Total		Amount		% of Total		Amount		% of Total
Noninterest-bearing demand	$	6,422,994	20	%	$	6,565,666	21	%	$	7,328,689	24	%	$	7,760,811	26	%	$	8,224,579	28	%
Savings	4,836,735		15	%	4,777,415		15	%	4,730,472		16	%	4,604,848		16	%	4,708,720		16	%
Interest-bearing demand	7,528,154		23	%	7,037,959		22	%	6,977,121		23	%	7,100,727		24	%	7,122,218		24	%
Money market	7,268,506		23	%	7,521,930		23	%	8,357,625		28	%	8,239,610		28	%	7,909,232		27	%
Brokered CDs	3,351,399		10	%	3,818,325		12	%	1,185,565		4	%	541,916		2	%	—		—	%
Other time deposits	2,715,538		8	%	2,293,114		7	%	1,752,351		6	%	1,388,242		5	%	1,233,833		4	%
Total deposits	$	32,123,326	100	%	$	32,014,409	100	%	$	30,331,824	100	%	$	29,636,154	100	%	$	29,198,581	100	%
Other customer funding(a)	151,644				170,873				226,258				261,767				283,856
Total deposits and other customer funding	$	32,274,971			$	32,185,282			$	30,558,081			$	29,897,921			$	29,482,437
Network transaction deposits(b)	$	1,649,389			$	1,600,619			$	1,273,420			$	979,003			$	864,086
Net deposits and other customer funding(c)	27,274,183				26,766,338				28,099,096				28,377,001				28,618,351
Time deposits of more than $250,000	533,853				465,446				345,169				282,206				222,318

(a) Includes repurchase agreements and commercial paper.
(b) Included above in interest-bearing demand and money market.
(c) Total deposits and other customer funding, excluding brokered CDs and network transaction deposits.

•Total deposits, which are the Corporation's largest source of funds, increased $2.5 billion, or 8%, from December 31, 2022, and increased $2.9 billion, or 10%, from September 30, 2022, primarily due to increases in brokered CDs, other time deposits, and network transaction deposits, partially offset by a decrease in noninterest-bearing demand deposit accounts.

•Estimated uninsured and uncollateralized deposits, excluding intercompany deposits, were 22.4% of total deposits at September 30, 2023, compared to 26.4% at December 31, 2022 and 29.1% at September 30, 2022.

Liquidity

The objective of liquidity risk management is to ensure that the Corporation has the ability to generate sufficient cash or cash equivalents in a timely and cost effective manner to satisfy the cash flow requirements of depositors and borrowers and to meet its other commitments as they become due. The Corporation’s liquidity risk management process is designed to identify, measure, and manage the Corporation’s funding and liquidity risk to meet its daily funding needs in the ordinary course of business, as well as to address expected and unexpected changes in its funding requirements. The Corporation engages in various activities to manage its liquidity risk, including diversifying its funding sources, stress testing, and holding readily-marketable assets which can be used as a source of liquidity, if needed.

The Corporation performs dynamic scenario analysis in accordance with industry best practices. Measures have been established to ensure the Corporation has sufficient high quality short-term liquidity to meet cash flow requirements under stressed scenarios. In addition, the Corporation also reviews static measures such as deposit funding as a percentage of total assets and liquid asset levels. Strong capital ratios, credit quality, and core earnings are also essential to maintaining cost effective access to wholesale funding markets. At September 30, 2023, the Corporation was in compliance with its internal liquidity objectives and had sufficient asset-based liquidity to meet its obligations even under a stressed scenario.

The Corporation maintains diverse and readily available liquidity sources, including:

•Lines of credit with the Federal Reserve Bank and FHLB, which require eligible loan and investment collateral to be pledged. Based on the amount of collateral pledged, the FHLB established a collateral value from which the Bank may draw advances, and issue letters of credit in favor of public fund depositors, against the collateral. As of September 30, 2023, the Bank had $5.4 billion available for future funding. The Federal Reserve Bank also establishes a collateral value of assets to support borrowings from the discount window. As of September 30, 2023, the Bank had $1.3 billion available for discount window borrowings.

•The BTFP, against which the Corporation can borrow with qualifying investment securities as collateral, valued at par as permitted by the terms of the program. As of September 30, 2023, the Bank had up to $619 million available for borrowing under the BTFP.

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•A $200 million Parent Company commercial paper program, of which there was none outstanding as of September 30, 2023.

•Dividends and service fees from subsidiaries, as well as the proceeds from issuance of capital, which are also funding sources for the Parent Company.

•Acquisition related equity issuances by the Parent Company; the Corporation has filed a shelf registration statement with the SEC under which the Parent Company may, from time to time, offer shares of the Corporation’s common stock in connection with acquisitions of businesses, assets, or securities of other companies.

•Other issuances by the Parent Company; the Corporation maintains on file with the SEC a universal shelf registration statement, under which the Parent Company may offer the following securities, either separately or in units: debt securities, preferred stock, depositary shares, common stock, and warrants.

•Bank issuances; the Bank may also issue institutional CDs, network transaction deposits, and brokered CDs.

•Global Bank Note Program issuances; the Bank has implemented a program pursuant to which it may from time to time offer up to $2.0 billion aggregate principal amount of its unsecured senior and subordinated notes.

The following table presents secured and total available liquidity sources, estimated uninsured and uncollateralized deposits (excluding intercompany deposits), and coverage of estimated uninsured and uncollateralized deposits:

Table 14 Liquidity Sources and Uninsured Deposit Coverage Ratio

($ in thousands)	September 30, 2023			June 30, 2023			March 31, 2023
Federal Reserve Bank balance	$	314,287		$	178,983		$	504,169
Available FHLB Chicago capacity	5,377,628			5,148,360			3,453,813
Available Federal Reserve Bank discount window capacity	1,335,938			1,635,140			1,799,453
Available BTFP capacity	618,829			633,817			644,915
Funding available within one business day(a)	7,646,682			7,596,300			6,402,351
Available federal funds lines	2,518,000			2,623,000			2,773,000
Available brokered deposits capacity(b)	1,240,488			761,301			3,646,393
Unsecured debt capacity(c)	1,000,000			1,000,000			1,000,000
Total available liquidity	$	12,405,170		$	11,980,601		$	13,821,744
Uninsured and uncollateralized deposits	$	7,200,701		$	6,674,744		$	7,337,286
Coverage ratio of uninsured and uncollateralized deposits with secured funding	106		%	114		%	87		%
Coverage ratio of uninsured and uncollateralized deposits with total funding	172		%	179		%	188		%

(a) Estimated based on normal course of operations with indicated institution.

(b) Availability based on internal policy limitations. The Corporation includes outstanding deposits that have received a primary purpose exemption in the brokered deposit classification as they have similar funding characteristics and risk as brokered deposits.

(c) Availability based on internal policy limitations.

Based on contractual obligations and ongoing operations, the Corporation's sources of liquidity are sufficient to meet present and future liquidity needs. See Table 17 for information about the Corporation's contractual obligations and other commitments. See section Deposits and Customer Funding for information about uninsured deposits and concentrations.

Credit ratings impact the Corporation's ability to issue debt securities and the cost to borrow money. Adverse changes in credit ratings impact not only the ability to raise funds in the capital markets but also the cost of these funds. For additional information regarding risks related to adverse changes in our credit ratings, see Part II, Item 1A, Risk Factors.

For the nine months ended September 30, 2023, net cash provided by operating and financing activities was $378 million and $1.9 billion, respectively, while net cash used in investing activities was $2.2 billion, for a net increase in cash and cash equivalents of $91 million since year-end 2022. At September 30, 2023, assets of $41.6 billion increased $2.2 billion, or 6%, from year-end 2022, primarily due to loan growth and increases in AFS securities. On the funding side, deposits of $32.1 billion increased $2.5 billion, or 8%, from year-end 2022, FHLB advances decreased $587 million, or 14%, while other long-term funding increased $281 million, or 113%, the latter due to the issuance of subordinated debt.

For the nine months ended September 30, 2022, net cash provided by operating and financing activities was $722 million and $2.7 billion, respectively, while net cash used in investing activities was $4.0 billion, for a net decrease in cash and cash equivalents of $523 million since year-end 2021. At September 30, 2022, assets of $38.0 billion increased $2.9 billion, or 8%, from year-end 2021, primarily due to loan growth. On the funding side, deposits of $29.2 billion increased $732 million, or 3%, from year-end 2021 and FHLB advances increased $2.2 billion, or 133%, to fund loan growth.

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Quantitative and Qualitative Disclosures about Market Risk

Market risk and interest rate risk are managed centrally. Market risk is the potential for loss arising from adverse changes in the fair value of fixed-income securities, equity securities, other earning assets, and derivative financial instruments as a result of changes in interest rates or other factors. Interest rate risk is the potential for reduced net interest income resulting from adverse changes in the level of interest rates. As a financial institution that engages in transactions involving an array of financial products, the Corporation is exposed to both market risk and interest rate risk. In addition to market risk, interest rate risk is measured and managed through a number of methods. The Corporation uses financial modeling simulation techniques that measure the sensitivity of future earnings due to changing rate environments to measure interest rate risk.

Policies established by the Corporation’s ALCO and approved by the Board of Directors are intended to limit these risks. The Board has delegated day-to-day responsibility for managing market and interest rate risk to ALCO. The primary objectives of market risk management are to minimize any adverse effect that changes in market risk factors may have on net interest income and to offset the risk of price changes for certain assets recorded at fair value.

Interest Rate Risk

The primary goal of interest rate risk management is to control exposure to interest rate risk within policy limits approved by the Board of Directors. These limits and guidelines reflect the Corporation's risk appetite for interest rate risk over both short-term and long-term horizons.

The major sources of the Corporation's non-trading interest rate risk are timing differences in the maturity and re-pricing characteristics of assets and liabilities, changes in the shape of the yield curve, and the potential exercise of explicit or embedded options. We measure these risks and their impact by identifying and quantifying exposures through the use of sophisticated simulation and valuation models which are employed by management to understand interest rate sensitive EAR and MVE at risk. The Corporation’s interest rate risk profile is such that, generally, a higher yield curve adds to income while a lower yield curve has a negative impact on earnings. The Corporation's EAR profile is asset sensitive at September 30, 2023.

For further discussion of the Corporation's interest rate risk and corresponding key assumptions, see the Interest Rate Risk section of Management’s Discussion and Analysis of Financial Condition and Results of Operations included in the Corporation’s 2022 Annual Report on Form 10-K.

The sensitivity analysis included below is measured as a percentage change in EAR due to gradual moves in benchmark interest rates from a baseline scenario over 12 months. We evaluate the sensitivity using: 1) a dynamic forecast incorporating expected growth in the balance sheet, and 2) a static forecast where the current balance sheet is held constant.

While a gradual shift in interest rates was used in this analysis to provide an estimate of exposure under a probable scenario, an instantaneous shift in interest rates would have a more significant impact. No EAR breaches occurred during the first nine months of 2023.

Table 15 Estimated % Change in Rate Sensitive Earnings at Risk Over 12 Months

	Sep 30, 2023				Dec 31, 2022
	Dynamic Forecast		Static Forecast		Dynamic Forecast		Static Forecast
Gradual Rate Change
100 bp increase in interest rates	2.0	%	2.2	%	3.9	%	3.4	%
200 bp increase in interest rates	4.0	%	4.4	%	7.8	%	6.8	%
100 bp decrease in interest rates	(0.6)	%	(0.9)	%	(3.4)	%	(2.9)	%
200 bp decrease in interest rates	(0.8)	%	(1.3)	%	(6.7)	%	(5.7)	%

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At September 30, 2023, the MVE profile indicates a decrease in net balance sheet value due to instantaneous upward changes in rates and an increase in net balance sheet value due to instantaneous downward changes in rates.

Table 16 Market Value of Equity Sensitivity

	Sep 30, 2023		Dec 31, 2022
Instantaneous Rate Change
100 bp increase in interest rates	(9.1)	%	(4.2)	%
200 bp increase in interest rates	(18.0)	%	(8.2)	%
100 bp decrease in interest rates	9.2	%	4.3	%
200 bp decrease in interest rates	17.8	%	8.0	%

Since MVE measures the discounted present value of cash flows over the estimated lives of instruments, the change in MVE does not directly correlate to the degree that earnings would be impacted over a shorter time horizon (i.e., the current year). Further, MVE does not take into account factors such as future balance sheet growth, changes in product mix, changes in yield curve relationships, and changes in product spreads that could mitigate the adverse impact of changes in interest rates. The MVE measure in the 200 bp increase in interest rates scenario is outside of the policy limit, which has been reported to the Corporation's Board.

The above EAR and MVE measures do not include all actions that management may undertake to manage this risk in response to anticipated changes in interest rates.

Contractual Obligations, Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities

The following table summarizes significant contractual obligations and other commitments at September 30, 2023, at those amounts contractually due to the recipient, including any unamortized premiums or discounts, hedge basis adjustments, or other similar carrying value adjustments.

Table 17 Contractual Obligations and Other Commitments

($ in thousands)	Note Reference	One Year or Less		One to Three Years		Three to Five Years		Over Five Years		Total
Time deposits		$	5,816,730	$	228,851	$	21,350	$	5	$	6,066,937
Short-term funding	8	451,644		—		—		—		451,644
FHLB advances	8	2,545,633		990,845		195,009		1,554		3,733,041
Other long-term funding	8	88		246,660		138		282,574		529,459
Operating leases	16	5,614		9,230		7,117		4,099		26,059
Total		$	8,819,709	$	1,475,586	$	223,613	$	288,232	$	10,807,141

The Corporation also has obligations under its derivatives, lending-related commitments, and retirement plans as described in Note 9 Derivative and Hedging Activities, Note 11 Commitments, Off-Balance Sheet Arrangements, Legal Proceedings, and Regulatory Matters, and Note 13 Retirement Plans of the notes to consolidated financial statements, respectively. Further discussion of the nature of each obligation is included in the referenced note to the consolidated financial statements.

Capital

Management actively reviews capital strategies for the Corporation and each of its subsidiaries in light of perceived business risks, future growth opportunities, industry standards, and compliance with regulatory requirements. The assessment of overall capital adequacy depends on a variety of factors, including asset quality, liquidity, stability of earnings, changing competitive forces, economic conditions in markets served, and strength of management. At September 30, 2023, the capital ratios of the Corporation and its banking subsidiaries were in excess of regulatory minimum requirements. The Corporation’s capital ratios are summarized in the following table.

Compliance with regulatory minimum capital requirements is a tool used in assessing the Corporation's capital adequacy, but not determinative of how the Corporation would fare under extreme stress. Factors that may affect the adequacy of the Corporation's capital include the inherent limitations of fair value estimates and the assumptions thereof, the inherent limitations of the regulatory risk-weights assigned to various asset types, the inherent limitations of accounting classifications of certain investments and the effect on their measurement, external macroeconomic conditions and their effects on capital and the Corporation's ability to raise capital or refinance capital commitments, and the extent of steps taken by state or federal government authorities in periods of extreme stress.

For additional information regarding the potential for additional regulation and supervision, see Part II, Item 1A, Risk Factors in the Corporation's quarterly report on Form 10-Q for the quarter ended March 31, 2023.

67

Table 18 Capital Ratios

	YTD				Quarter Ended
($ in thousands)	Sep 30, 2023		Sep 30, 2022		Sep 30, 2023			Jun 30, 2023			Mar 31, 2023			Dec 31, 2022			Sep 30, 2022
Risk-based Capital(a)
CET1					$	3,197,445		$	3,143,131		$	3,085,618		$	3,035,578		$	2,955,710
Tier 1 capital					3,391,557			3,337,243			3,279,730			3,229,690			3,149,822
Total capital					4,103,998			4,051,096			3,990,606			3,680,227			3,582,099
Total risk-weighted assets					33,497,484			33,146,137			32,648,115			32,472,008			31,405,843
Modified CECL transitional amount					44,851			44,851			44,851			67,276			67,276
CET1 capital ratio					9.55		%	9.48		%	9.45		%	9.35		%	9.41		%
Tier 1 capital ratio					10.12		%	10.07		%	10.05		%	9.95		%	10.03		%
Total capital ratio					12.25		%	12.22		%	12.22		%	11.33		%	11.41		%
Tier 1 leverage ratio					8.42		%	8.40		%	8.46		%	8.59		%	8.66		%
Selected Equity and Performance Ratios
Total stockholders’ equity / total assets					9.91		%	10.00		%	10.14		%	10.19		%	10.39		%
Dividend payout ratio(b)	35.80	%	36.14	%	39.62		%	37.50		%	31.34		%	30.00		%	32.26		%
Return on average assets	0.91	%	0.95	%	0.80		%	0.86		%	1.06		%	1.12		%	1.02		%
Annualized noninterest expense / average assets	1.90	%	2.04	%	1.90		%	1.89		%	1.92		%	2.03		%	2.08		%

(a) The Federal Reserve establishes regulatory capital requirements, including well-capitalized standards for the Corporation. The Corporation follows Basel III, subject to certain
    transition provisions. These regulatory capital measurements are used by management, regulators, investors, and analysts to assess, monitor, and compare the quality and
    composition of the Corporation's capital with the capital of other financial services companies.
(b) Ratio is based upon basic earnings per common share.

See Part II, Item 2, Unregistered Sales of Equity Securities and Use of Proceeds, for information on the shares repurchased during the third quarter of 2023.

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Non-GAAP Measures

Table 19 Non-GAAP Measures

	YTD						Quarter Ended
($ in thousands)	Sep 30, 2023			Sep 30, 2022			Sep 30, 2023			Jun 30, 2023			Mar 31, 2023			Dec 31, 2022			Sep 30, 2022
Selected equity and performance ratios(a)(b)(c)
Tangible common equity / tangible assets							6.88		%	6.94		%	7.03		%	6.97		%	7.06		%
Return on average equity	8.91		%	8.67		%	7.99		%	8.47		%	10.32		%	10.81		%	9.59		%
Return on average tangible common equity	13.07		%	12.96		%	11.67		%	12.38		%	15.26		%	16.15		%	14.32		%
Return on average CET1	11.41		%	11.60		%	10.08		%	10.88		%	13.38		%	14.04		%	12.69		%
Return on average tangible assets	0.95		%	1.00		%	0.84		%	0.90		%	1.11		%	1.18		%	1.08		%
Average stockholders' equity / average assets	10.16		%	11.00		%	10.06		%	10.18		%	10.26		%	10.40		%	10.69		%
Tangible common equity reconciliation(a)
Common equity							$	3,933,531		$	3,928,762		$	3,931,551		$	3,821,378		$	3,759,840
Goodwill and other intangible assets, net							(1,147,666)			(1,149,869)			(1,152,072)			(1,154,274)			(1,156,477)
Tangible common equity							$	2,785,865		$	2,778,893		$	2,779,480		$	2,667,104		$	2,603,363
Tangible assets reconciliation(a)
Total assets							$	41,637,381		$	41,219,473		$	40,702,519		$	39,405,727		$	38,049,607
Goodwill and other intangible assets, net							(1,147,666)			(1,149,869)			(1,152,072)			(1,154,274)			(1,156,477)
Tangible assets							$	40,489,715		$	40,069,604		$	39,550,448		$	38,251,453		$	36,893,130
Average tangible common equity and average CET1 reconciliation(a)
Common equity	$	3,913,850		$	3,776,296		$	3,937,940		$	3,934,949		$	3,867,890		$	3,797,568		$	3,791,396
Goodwill and other intangible assets, net	(1,151,039)			(1,159,982)			(1,148,951)			(1,151,039)			(1,153,173)			(1,155,408)			(1,157,754)
Tangible common equity	2,762,811			2,616,314			2,788,989			2,783,910			2,714,716			2,642,160			2,633,642
Modified CECL transitional amount	44,851			67,276			44,851			44,851			44,851			67,276			67,276
Accumulated other comprehensive loss	270,989			147,258			302,043			251,624			258,827			254,178			189,935
Deferred tax assets, net	27,853			36,085			27,694			27,714			28,157			29,248			29,875
Average CET1	$	3,106,504		$	2,866,934		$	3,163,577		$	3,108,099		$	3,046,551		$	2,992,862		$	2,920,729
Average tangible assets reconciliation(a)
Total assets	$	40,419,166		$	36,075,770		$	41,075,980		$	40,558,311		$	39,607,065		$	38,385,436		$	37,271,779
Goodwill and other intangible assets, net	(1,151,039)			(1,159,982)			(1,148,951)			(1,151,039)			(1,153,173)			(1,155,408)			(1,157,754)
Tangible assets	$	39,268,127		$	34,915,788		$	39,927,029		$	39,407,273		$	38,453,892		$	37,230,028		$	36,114,025
Adjusted net income reconciliation(b)
Net income	$	273,762		$	257,360		$	83,248		$	87,154		$	103,360		$	108,762		$	96,275
Other intangible amortization, net of tax	4,956			4,956			1,652			1,652			1,652			1,652			1,652
Adjusted net income	$	278,718		$	262,316		$	84,900		$	88,806		$	105,012		$	110,414		$	97,927
Adjusted net income available to common equity reconciliation(b)
Net income available to common equity	$	265,137		$	248,735		$	80,373		$	84,279		$	100,485		$	105,887		$	93,400
Other intangible amortization, net of tax	4,956			4,956			1,652			1,652			1,652			1,652			1,652
Adjusted net income available to common equity	$	270,093		$	253,691		$	82,025		$	85,931		$	102,137		$	107,539		$	95,052
Core customer deposit reconciliation
Total deposits							$	32,123,326		$	32,014,409		$	30,331,824		$	29,636,154		$	29,198,581
Network transaction deposits							(1,649,389)			(1,600,619)			(1,273,420)			(979,003)			(864,086)
Brokered CDs							(3,351,399)			(3,818,325)			(1,185,565)			(541,916)			—
Core customer deposits							$	27,122,539		$	26,595,465		$	27,872,839		$	28,115,235		$	28,334,495
Efficiency ratio reconciliation(d)
Federal Reserve efficiency ratio	58.17		%	62.32		%	60.06		%	58.49		%	56.07		%	55.47		%	60.32		%
Fully tax-equivalent adjustment	(0.84)		%	(0.98)		%	(0.89)		%	(0.85)		%	(0.79)		%	(0.77)		%	(0.87)		%
Other intangible amortization	(0.67)		%	(0.75)		%	(0.69)		%	(0.68)		%	(0.66)		%	(0.62)		%	(0.67)		%
Fully tax-equivalent efficiency ratio	56.67		%	60.60		%	58.50		%	56.96		%	54.64		%	54.08		%	58.79		%

(a) Tangible common equity and tangible assets exclude goodwill and other intangible assets, net.

(b) Adjusted net income and adjusted net income available to common equity, which are used in the calculation of return on average tangible assets and return on average tangible common equity, respectively, add back other intangible amortization, net of tax.

(c) These capital measurements are used by management, regulators, investors, and analysts to assess, monitor, and compare the quality and composition of our capital with the capital of other financial services companies.

(d) The efficiency ratio as defined by the Federal Reserve guidance is noninterest expense (which includes the provision for unfunded commitments) divided by the sum of net interest income plus noninterest income, excluding investment securities gains (losses), net. The fully tax-equivalent efficiency ratio is noninterest expense (which includes the provision for unfunded commitments), excluding other intangible amortization, divided by the sum of fully tax-equivalent net interest income plus noninterest income, excluding investment securities gains (losses), net.

69

Sequential Quarter Results

The Corporation reported net income of $83 million for the third quarter of 2023, compared to net income of $87 million for the second quarter of 2023. Net income available to common equity was $80 million for the third quarter of 2023, or $0.53 for both basic and diluted earnings per common share. Comparatively, net income available to common equity for the second quarter of 2023 was $84 million, or $0.56 for both basic and diluted earnings per common share (see Table 1).

Fully tax-equivalent net interest income for the third quarter of 2023 was $259 million, $4 million, or 1%, lower than the second quarter of 2023. The net interest margin in the third quarter of 2023 was down 9 bp to 2.71%. The decreases in net interest income and net interest margin were due to increased interest-bearing liability costs. Average earning assets increased $507 million, or 1%, to $38.1 billion in the third quarter of 2023. Average loans increased $446 million, or 2%, driven by growth across all loan categories. On the funding side, average total interest-bearing deposits increased $1.1 billion, or 4%, due to increases in time deposits, interest-bearing demand, network transaction deposits, and savings, partially offset by a decrease in money market. Average FHLB advances decreased $335 million, or 9%, due to deposit growth during the quarter (see Table 2).

The provision for credit losses was $22 million for both the third quarter and second quarter of 2023 (see Table 11). See discussion under sections: Provision for Credit Losses, Nonperforming Assets, and Allowance for Credit Losses on Loans.

Noninterest income for the third quarter of 2023 was $67 million, up $1 million, or 2%, from the second quarter of 2023 (see Table 3).

Noninterest expense for the third quarter of 2023 was $196 million, up $6 million, or 3%, from the second quarter of 2023, driven primarily by increases in personnel and technology expenses (see Table 4).

For the third quarter of 2023, the Corporation recognized income tax expense of $19 million, compared to income tax expense of $24 million for the second quarter of 2023. See Income Taxes section for a detailed discussion on income taxes.

Comparable Quarter Results

The Corporation reported net income of $83 million for the third quarter of 2023 compared to net income of $96 million for the third quarter of 2022. Net income available to common equity was $80 million for the third quarter of 2023, or $0.53 for both basic and diluted earnings per common share. Comparatively, net income available to common equity for the third quarter of 2022 was $93 million, or $0.62 for both basic and diluted earnings per share (see Table 1).

Fully tax-equivalent net interest income for the third quarter of 2023 was $259 million, $10 million, or 4%, lower than the third quarter of 2022. The net interest margin between the comparable quarters was down 42 bp, to 2.71% in the third quarter of 2023. The decreases in net interest income and net interest margin were due to interest-bearing liability costs rising at a faster rate of growth than earning asset revenues as a result of deposit funding pressures. Average earning assets increased $3.9 billion, or 11%, to $38.1 billion in the third quarter of 2023, as average loans increased $2.8 billion, or 10%, driven by growth across nearly all loan categories, and investments and other increased $1.0 billion, or 15%. On the funding side, average interest-bearing deposits increased $4.9 billion, or 24%, from the third quarter of 2022, due to increases in time deposits, network transaction deposits, interest-bearing demand, and savings, partially offset by a decrease in money market. Average short and long-term funding increased $388 million, or 10% (see Table 2), primarily driven by the issuance of subordinated debt in the first quarter of 2023.

The provision for credit losses was $22 million for the third quarter of 2023, compared to a provision of $17 million for the third quarter of 2022 (see Table 11). See discussion under sections: Provision for Credit Losses, Nonperforming Assets, and Allowance for Credit Losses on Loans.

Noninterest income for the third quarter of 2023 was $67 million, down $4 million, or 6%, compared to the third quarter of 2022, primarily due to lower investment securities gains (losses), net; capital markets, net; and service charges and deposit account fees; partially offset by higher mortgage banking, net income. (see Table 3).

Noninterest expense was effectively flat at $196 million for both the third quarters of 2023 and 2022 (see Table 4).

The Corporation recognized income tax expense of $19 million for the third quarter of 2023, compared to an income tax expense of $26 million for the third quarter of 2022. See section Income Taxes for a detailed discussion on income taxes.

70

Segment Review

As discussed in Note 14 Segment Reporting of the notes to consolidated financial statements, the Corporation’s reportable segments have been determined based upon its internal profitability reporting system, which is organized by strategic business unit. Certain strategic business units have been combined for segment information reporting purposes where the nature of the products and services, the type of customer, and the distribution of those products and services are similar. The reportable segments are Corporate and Commercial Specialty; Community, Consumer and Business; and Risk Management and Shared Services.

Table 20 Selected Segment Financial Data

	Three Months Ended Sep 30,							Nine Months Ended Sep 30,
($ in thousands)	2023			2022			% Change	2023			2022			% Change
Corporate and Commercial Specialty
Total revenue	$	177,771		$	156,688		13%	$	520,908		$	438,862		19%
Provision for credit losses	14,066			11,904			18%	41,523			36,803			13%
Noninterest expense	63,207			58,934			7%	186,351			172,141			8%
Income tax expense	19,304			15,967			21%	54,138			42,248			28%
Net income	81,194			69,884			16%	238,897			187,670			27%
Average earning assets	17,623,106			16,123,187			9%	17,393,044			15,213,821			14%
Average loans	17,615,560			16,118,417			9%	17,379,628			15,210,316			14%
Average deposits	8,828,634			9,256,598			(5)%	9,101,585			9,139,639			—%
Average allocated capital (Average CET1)(a)	1,719,300			1,606,052			7%	1,712,290			1,514,786			13%
Return on average allocated capital(a)	18.74		%	17.26		%	148 bp	18.65		%	16.56		%	N/M
Community, Consumer, and Business
Total revenue	$	220,714		$	163,338		35%	$	623,584		$	424,679		47%
Provision for credit losses	7,381			5,378			37%	21,467			14,958			44%
Noninterest expense	108,185			107,860			—%	328,960			311,423			6%
Income tax expense	22,187			10,521			111%	57,469			20,642			178%
Net income	82,961			39,579			110%	215,688			77,655			178%
Average earning assets	11,737,319			10,416,253			13%	11,496,144			9,796,760			17%
Average loans	11,737,319			10,416,253			13%	11,496,144			9,796,760			17%
Average deposits	18,224,072			18,636,223			(2)%	18,137,460			18,532,576			(2)%
Average allocated capital (Average CET1)(a)	750,457			640,571			17%	731,486			583,265			25%
Return on average allocated capital(a)	43.86		%	24.51		%	N/M	39.42		%	17.80		%	N/M
Risk Management and Shared Services
Total revenue	$	(77,663)		$	15,201		N/M	$	(164,126)		$	25,505		N/M
Provision for credit losses	496			(283)			N/M	(975)			(38,756)			(97)%
Noninterest expense	24,814			28,997			(14)%	58,980			66,940			(12)%
Income tax expense (benefit)	(22,065)			(325)			N/M	(41,308)			5,286			N/M
Net (loss)	(80,907)			(13,189)			N/M	(180,823)			(7,965)			N/M
Average earning assets	8,715,183			7,659,334			14%	8,524,759			7,930,511			7%
Average loans	531,731			521,033			2%	517,609			520,961			(1)%
Average deposits	4,949,087			981,535			N/M	3,818,115			892,773			N/M
Average allocated capital (Average CET1)(a)	693,819			674,106			3%	662,728			768,883			(14)%
Return on average allocated capital(a)	(47.91)		%	(9.45)		%	N/M	(38.22)		%	(2.88)		%	N/M
Consolidated Total
Total revenue	$	320,823		$	335,227		(4)%	$	980,366		$	889,045		10%
Return on average allocated capital(a)	10.08		%	12.69		%	N/M	11.41		%	11.60		%	-19 bp

N//M = Not meaningful

(a) The Federal Reserve establishes capital adequacy requirements for the Corporation, including CET1. For segment reporting purposes, the ROCET1 reflects return on average allocated CET1. The ROCET1 for the Risk Management and Shared Services segment and the Consolidated Total is inclusive of the annualized effect of the preferred stock
dividends.

71

Notable Changes in Segment Financial Data

The Corporate and Commercial Specialty segment consists of lending and deposit solutions to larger businesses, developers, not-for-profits, municipalities, and financial institutions, and the support to deliver, fund, and manage such banking solutions. In addition, this segment provides a variety of investment, fiduciary, and retirement planning products and services to individuals and small to mid-sized businesses.

•Total revenue increased $82 million from the nine months ended September 30, 2022 and increased $21 million from the three months ended September 30, 2022, primarily attributable to higher loan volumes and interest rates driving net interest income higher.

•Noninterest expense increased $14 million from the nine months ended September 30, 2022 and increased $4 million from the three months ended September 30, 2022, primarily due to higher personnel costs and allocated corporate overhead.

•Average loans increased $2.2 billion from the nine months ended September 30, 2022 and increased $1.5 billion from the three months ended September 30, 2022, primarily driven by growth in commercial and business lending and CRE lending.

•Average deposits decreased $428 million from the three months ended September 30, 2022, driven by decreases in noninterest-bearing demand deposits and money market deposits, partially offset by an increase in interest-bearing demand deposits.

The Community, Consumer, and Business segment consists of lending and deposit solutions to individuals and small to mid-sized businesses.

•Total revenue increased $199 million from the nine months ended September 30, 2022 and increased $57 million from the three months ended September 30, 2022, primarily attributable to receiving net FTP credit for providing funding for the Corporation and higher interest rates.

•Noninterest expense increased $18 million from the nine months ended September 30, 2022, driven by higher allocated corporate overhead and increased technology expense, as the Corporation continues to invest in digital investments tied to its strategic initiatives.

•Average loans increased $1.7 billion from the nine months ended September 30, 2022 and increased $1.3 billion from the three months ended September 30, 2022, primarily driven by growth in auto finance lending and residential mortgage lending.

•Average deposits decreased $395 million from the nine months ended September 30, 2022 and decreased $412 million from the three months ended September 30, 2022, driven by decreases in noninterest bearing demand deposits and money market deposits, partially offset by an increase in time deposits.

The Risk Management and Shared Services segment includes key shared Corporate functions, Parent Company activity, intersegment eliminations, and residual revenues and expenses.

•Total revenue decreased $190 million from the nine months ended September 30, 2022 and decreased $93 million from the three months ended September 30, 2022, primarily driven by increased interest expense as a result of holding more brokered CDs and other short term funding.

•Provision for credit losses increased $38 million from the nine months ended September 30, 2022, driven by loan growth, nominal credit movement, and general macroeconomic trends.

•Average earning assets increased $594 million from the nine months ended September 30, 2022 and increased $1.1 billion from the three months ended September 30, 2022, primarily driven by higher balances of AFS investment securities in the portfolio.

•Average deposits increased $2.9 billion from the nine months ended September 30, 2022 and increased $4.0 billion from the three months ended September 30, 2022, primarily driven by increases in brokered CDs and network deposits.

72

Critical Accounting Estimates

In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and revenues and expenses for the period. Actual results could differ significantly from those estimates. The determination of the ACLL is particularly susceptible to significant change. A discussion of these estimates can be found in the Critical Accounting Estimates section in Management's Discussion and Analysis of Financial Condition and Results of Operations included in the Corporation’s 2022 Annual Report on Form 10-K. There have been no changes in the Corporation's application of critical accounting estimates since December 31, 2022.

Recent Developments

On October 24, 2023, the Corporation’s Board of Directors declared a regular quarterly cash dividend of $0.22 per common share, payable on December 15, 2023 to shareholders of record at the close of business on December 1, 2023. This is an increase of $0.01 from the previous quarterly dividend of $0.21 per common share. The Board of Directors also declared a regular quarterly cash dividend of $0.3671875 per depositary share on Associated's 5.875% Series E Perpetual Preferred Stock, payable on December 15, 2023 to shareholders of record at the close of business on December 1, 2023. The Board of Directors also declared a regular quarterly cash dividend of $0.3515625 per depositary share on Associated's 5.625% Series F Perpetual Preferred Stock, payable on December 15, 2023 to shareholders of record at the close of business on December 1, 2023.

ITEM 3.     Quantitative and Qualitative Disclosures About Market Risk

Information required by this item is set forth in Item 2 under the captions Quantitative and Qualitative Disclosures about Market Risk and Interest Rate Risk.

73

ITEM 4.     Controls and Procedures

The Corporation maintains disclosure controls and procedures as required under Rule 13a-15 promulgated under the Securities Exchange Act of 1934, as amended, that are designed to ensure that information required to be disclosed in the Corporation's Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to the Corporation’s management, including its Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

As of September 30, 2023, the Corporation’s management carried out an evaluation, under the supervision and with the participation of the Corporation’s Chief Executive Officer and Chief Financial Officer, of the effectiveness of its disclosure controls and procedures. Based on the foregoing, its Chief Executive Officer and Chief Financial Officer concluded that the Corporation’s disclosure controls and procedures were effective as of September 30, 2023.

No changes were made to the Corporation’s internal control over financial reporting (as defined in Rule 13a-15(f) of the Exchange Act of 1934) during the last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Corporation’s internal control over financial reporting.

74

PART II - OTHER INFORMATION

ITEM 1. Legal Proceedings

The information required by this item is set forth in Part I, Item 1 under Note 11 Commitments, Off-Balance Sheet Arrangements, Legal Proceedings, and Regulatory Matters of the notes to consolidated financial statements.

ITEM 1A. Risk Factors

There have been no material changes in the Risk Factors described in the Corporation’s 2022 Annual Report on Form 10-K other than as set out in the Corporation's Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, in Item 1A of Part II.

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

During the third quarter of 2023, the Corporation repurchased approximately $261,000 of common stock, all of which were repurchases related to tax withholding on equity compensation with no open market purchases during the quarter. The repurchase details are presented in the table below:

Common Stock Purchases

	Total Number  of Shares Purchased(a)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs(b)
Period
July 1, 2023 - July 31, 2023	6,763	$	18.17	—	—
August 1, 2023 - August 31, 2023	7,163	18.47		—	—
September 1, 2023 - September 30, 2023	356	17.66		—	—
Total	14,282	$	18.31	—	4,654,934

(a) During the third quarter of 2023, all common shares repurchased were for minimum tax withholding settlements on equity compensation. These purchases do not count against the maximum value of shares remaining available for purchase under the Board of Directors' authorization.

(b) At September 30, 2023, there remained $80 million authorized to be repurchased under the Board of Directors' 2021 authorization. The maximum number of shares that may yet be purchased under this authorization is based on the closing share price on September 30, 2023.

Repurchases under Board authorized repurchase programs are subject to any necessary regulatory approvals and other limitations and may occur from time to time in open market purchases, block transactions, private transactions, accelerated share repurchases, or similar facilities.

ITEM 5. Other Information

During the three months ended September 30, 2023, no director or "officer" of the Corporation adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.

75

ITEM 6. Exhibits

(a)    Exhibits:

Exhibit (31.1), Certification Under Section 302 of Sarbanes-Oxley by Andrew J. Harmening, Chief Executive Officer.

Exhibit (31.2), Certification Under Section 302 of Sarbanes-Oxley by Derek S. Meyer, Chief Financial Officer.

Exhibit (32), Certification by the Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of Sarbanes-Oxley.

Exhibit (101), Interactive data files pursuant to Rule 405 of Regulation S-T: (i) Unaudited Consolidated Balance Sheets, (ii) Unaudited Consolidated Statements of Income, (iii) Unaudited Consolidated Statements of Comprehensive Income, (iv) Unaudited Consolidated Statements of Changes in Stockholders’ Equity, (v) Unaudited Consolidated Statements of Cash Flows, and (vi) Notes to Consolidated Financial Statements.

Exhibit (104), The cover page from the Corporation's Quarterly Report on Form 10-Q for the quarter ended September 30, 2023 has been formatted in Inline XBRL (Inline Extensible Business Reporting Language) and contained in Exhibits in 101.

76

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 hereunto duly authorized.

	ASSOCIATED BANC-CORP
	(Registrant)
Date: October 26, 2023	/s/ Andrew J. Harmening
	Andrew J. Harmening
	President and Chief Executive Officer
Date: October 26, 2023	/s/ Derek S. Meyer
	Derek S. Meyer
	Chief Financial Officer
Date: October 26, 2023	/s/ Tammy C. Stadler
	Tammy C. Stadler
	Chief Accounting Officer

77

EX-31.1

Exhibit 31.1

CERTIFICATION UNDER SECTION 302 OF THE

SARBANES-OXLEY ACT OF 2002

CERTIFICATIONS

I, Andrew J. Harmening, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Associated Banc-Corp;

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(s) 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(s) 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: October 26, 2023	/s/ Andrew J. Harmening
	Andrew J. Harmening
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION UNDER SECTION 302 OF THE

SARBANES-OXLEY ACT OF 2002

CERTIFICATIONS

I, Derek S. Meyer, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Associated Banc-Corp;

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(s) 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(s) 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: October 26, 2023	/s/ Derek S. Meyer
	Derek S. Meyer
	Chief Financial Officer

EX-32

Exhibit 32

Certification by the Chief Executive Officer and 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. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned officers of Associated Banc-Corp, a Wisconsin corporation (the “Company”), does hereby certify that:

1. The accompanying Quarterly Report of the Company on Form 10-Q for the quarter ended September 30, 2023 (the “Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. Information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Andrew J. Harmening

Andrew J. Harmening

Chief Executive Officer

October 26, 2023

/s/ Derek S. Meyer

Derek S. Meyer

Chief Financial Officer

October 26, 2023

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Oct. 23, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	001-31343
Entity Registrant Name	Associated Banc-Corp
Entity Incorporation, State or Country Code	WI
Entity Address, Address Line One	433 Main Street
Entity Address, City or Town	Green Bay,
Entity Address, State or Province	WI
Entity Tax Identification Number	39-1098068
Entity Address, Postal Zip Code	54301
City Area Code	920
Local Phone Number	491-7500
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		150,939,712
Entity Central Index Key	0000007789
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
The New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	ASB
Security Exchange Name	NYSE
The New York Stock Exchange | Two Thousand Twenty Three Subordinated Notes
Entity Information [Line Items]
Title of 12(b) Security	6.625% Fixed-Rate Reset Subordinated Notes due 2033
Trading Symbol	ASBA
Security Exchange Name	NYSE
Series E Preferred Stock | The New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shrs, each representing 1/40th intrst in a shr of 5.875% Non-Cum. Perp Pref Stock, Srs E
Trading Symbol	ASB PrE
Security Exchange Name	NYSE
Series F Preferred Stock | The New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shrs, each representing 1/40th intrst in a shr of 5.625% Non-Cum. Perp Pref Stock, Srs F
Trading Symbol	ASB PrF
Security Exchange Name	NYSE

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets
AFS investment securities, at fair value	$ 3,491,679	$ 2,742,025
HTM investment securities, net, at amortized cost	3,900,415	3,960,398
Equity Securities, FV-NI and without Readily Determinable Fair Value	35,937	25,216
FHLB and Federal Reserve Bank stocks, at cost	268,698	295,496
Residential loans held for sale	54,790	20,383
Loans	30,193,187	28,799,569
Allowance for loan losses	(345,795)	(312,720)
Tax credit and other investments	256,905	276,773
Premises and equipment, net	373,017	376,906
Goodwill	1,104,992	1,104,992
Other intangible assets, net	42,674	49,282
Mortgage servicing rights, net	89,131	77,351
Interest receivable	171,119	144,449
Other assets	608,068	547,621
Total assets	41,637,381	39,405,727
Liabilities and stockholders' equity
Noninterest-bearing demand deposits	6,422,994	7,760,811
Interest-bearing deposits	25,700,332	21,875,343
Total deposits	32,123,326	29,636,154
Federal funds purchased and securities sold under agreements to repurchase	451,644	585,139
Commercial paper	0	20,798
FHLB advances	3,733,041	4,319,861
Allowance for unfunded commitments	34,776	38,776
Accrued expenses and other liabilities	637,491	541,438
Total liabilities	37,509,738	35,390,237
Stockholders’ equity
Preferred equity	194,112	194,112
Common stock	1,752	1,752
Surplus	1,711,454	1,712,733
Retained earnings	3,074,014	2,904,882
Accumulated other comprehensive (loss)	(339,140)	(272,799)
Treasury stock, at cost	(514,549)	(525,190)
Total common equity	3,933,531	3,821,378
Total stockholders’ equity	4,127,643	4,015,490
Total liabilities and stockholders’ equity	$ 41,637,381	$ 39,405,727
Preferred shares authorized (par value $1.00 per share)	750,000	750,000
Preferred shares issued and outstanding	200,000	200,000
Common shares authorized (par value $0.01 per share)	250,000,000	250,000,000
Common shares issued	175,216,409	175,216,409
Common shares outstanding	150,951,209	150,444,019
Preferred shares, par value	$ 1.00	$ 1.00
Common shares, par value	$ 0.01	$ 0.01
Fair Value, Inputs, Level 2
Assets
AFS investment securities, at fair value	$ 3,382,655	$ 2,632,647
Bank and corporate owned life insurance	679,775	676,530
Liabilities and stockholders' equity
FHLB advances	3,733,041	4,319,861
Other long-term funding	529,459	248,071
Fair Value, Inputs, Level 3
Assets
Equity Securities, FV-NI and without Readily Determinable Fair Value	19,236	19,225
Loans, net	29,847,392	28,486,849
Mortgage servicing rights, net	89,131	77,351
Fair Value, Inputs, Level 1
Assets
Cash and due from banks	388,694	436,952
Interest-bearing deposits in other financial institutions	323,130	156,693
Federal funds sold and securities purchased under agreements to resell	965	27,810
AFS investment securities, at fair value	$ 109,024	$ 109,378

XML

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Preferred shares, par value	$ 1.00	$ 1.00
Common shares, par value	$ 0.01	$ 0.01

XML

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest income
Interest and fees on loans	$ 447,912	$ 275,666	$ 1,262,538	$ 643,239
Interest and dividends on investment securities
Taxable	38,210	19,221	104,197	54,009
Tax-exempt	15,941	16,538	47,960	49,025
Other interest	6,575	3,284	17,990	7,696
Total interest income	508,637	314,708	1,432,685	753,969
Interest expense
Interest on deposits	193,131	26,000	464,749	37,590
Interest on federal funds purchased and securities sold under agreements to repurchase	3,100	756	8,504	1,200
Interest on other short-term funding	0	1	1	2
Interest on FHLB advances	48,143	20,792	147,365	38,663
Interest on long-term funding	10,019	2,722	25,895	8,182
Total interest expense	254,394	50,270	646,514	85,637
Net interest income	254,244	264,439	786,171	668,332
Provision for credit losses	21,943	16,998	62,014	13,006
Net interest income after provision for credit losses	232,301	247,440	724,157	655,326
Noninterest income
Capital markets, net	5,368	7,675	15,544	24,331
Mortgage banking, net	6,501	2,098	17,814	16,635
Bank and corporate owned life insurance	2,047	1,827	6,882	8,004
Asset gains, net	625	18	590	1,883
Investment securities gains (losses), net	(11)	5,664	55	5,676
Other	2,339	2,527	6,841	6,613
Noninterest Income, Total	66,579	70,788	194,195	220,713
Noninterest expense
Personnel	117,159	118,243	347,669	335,720
Technology	26,172	22,694	73,990	65,401
Occupancy	14,125	13,717	42,775	43,948
Business development and advertising	7,100	6,778	20,054	17,388
Equipment	5,016	4,921	14,921	14,841
Legal and professional	4,461	4,159	13,149	14,118
Loan and foreclosure costs	2,049	1,631	4,822	5,121
FDIC assessment	9,150	5,800	25,575	16,300
Other intangible amortization	2,203	2,203	6,608	6,608
Other	8,771	15,645	24,726	31,057
Total noninterest expense	196,205	195,791	574,291	550,503
Income before income taxes	102,674	122,438	344,061	325,536
Income tax expense	19,426	26,163	70,299	68,176
Net income	83,248	96,275	273,762	257,360
Preferred stock dividends	2,875	2,875	8,625	8,625
Net income available to common equity	$ 80,373	$ 93,400	$ 265,137	$ 248,735
Earnings per common share
Basic	$ 0.53	$ 0.62	$ 1.76	$ 1.66
Diluted	$ 0.53	$ 0.62	$ 1.75	$ 1.65
Average common shares outstanding
Basic	150,035	149,321	149,929	149,063
Diluted	151,014	150,262	150,971	150,205
Wealth management fees
Noninterest income
Noninterest Income In Scope of Topic 606	$ 20,828	$ 19,984	$ 61,499	$ 63,719
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606	12,864	15,029	38,230	48,392
Card-based fees
Noninterest income
Card-based fees	11,510	11,479	33,492	32,847
Other fee-based revenue
Noninterest income
Card-based fees	$ 4,509	$ 4,487	$ 13,249	$ 12,613

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 83,248	$ 96,275	$ 273,762	$ 257,360
AFS investment securities
Net unrealized (losses)	(56,924)	(100,092)	(69,512)	(268,413)
Unrealized (losses) on AFS securities transferred to HTM securities	0	0	0	(67,604)
Amortization of net unrealized losses on AFS securities transferred to HTM securities	2,327	2,888	6,883	7,269
Reclassification adjustment for net (gains) realized in net income	0	0	0	(12)
Income tax benefit	13,928	24,810	15,879	83,906
Other comprehensive (loss) on AFS securities	(40,669)	(72,394)	(46,751)	(244,854)
Cash flow hedge derivatives
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(13,592)	0	(33,976)	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	4,516	0	9,097	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	2,315	0	5,488	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(6,762)	0	(19,391)	0
Defined benefit pension and postretirement obligations
Amortization of prior service cost	(81)	(82)	(244)	(244)
Amortization of actuarial (gain) loss	(7)	347	15	494
Income tax benefit (expense)	23	(474)	31	(470)
Other comprehensive (loss) on pension and postretirement obligations	(66)	(209)	(198)	(221)
Total other comprehensive (loss)	(47,497)	(72,603)	(66,340)	(245,074)
Comprehensive income	$ 35,751	$ 23,672	$ 207,422	$ 12,286

XML

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Series E Preferred Stock	Series F Preferred Stock	Performance/Service Based RSAs, RSA,	Cumulative Effect, Period Of Adoption, Adjustment	Preferred Equity	Preferred Equity Cumulative Effect, Period Of Adoption, Adjustment	Common Stock	Common Stock Cumulative Effect, Period Of Adoption, Adjustment	Surplus	Surplus Cumulative Effect, Period Of Adoption, Adjustment	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period Of Adoption, Adjustment	Accumulated Other Comprehensive (Loss)	Accumulated Other Comprehensive (Loss) Cumulative Effect, Period Of Adoption, Adjustment	Treasury Stock, Common	Treasury Stock, Common Performance/Service Based RSAs, RSA,	Treasury Stock, Common Cumulative Effect, Period Of Adoption, Adjustment
Beginning balance at Dec. 31, 2021	$ 4,024,853				$ 4,026,566	$ 193,195	$ 193,195	$ 1,752	$ 1,752	$ 1,713,851	$ 1,713,851	$ 2,672,601	$ 2,674,314	$ (10,317)	$ (10,317)	$ (546,229)		$ (546,229)
Beginning balance (Accounting Standards Update 2016-13) at Dec. 31, 2021					1,713								1,713
Comprehensive income:
Net income	74,262											74,262
Net other comprehensive loss during period	(126,708)													(126,708)
Comprehensive income	(52,445)
Common stock issued:
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	6,654									(11,911)		0				18,565
Purchase of treasury stock,	(5,193)																$ (5,193)
Cash dividends:
Common stock	(30,583)											(30,583)
Preferred stock(a)	(2,875)											(2,875)
Stock-based compensation expense, net	6,164									6,164
Ending balance at Mar. 31, 2022	3,948,287					193,195		1,752		1,708,104		2,715,118		(137,024)		(532,858)
Cash dividends:
Preferred Stock, Dividends, Per Share, Cash Paid		$ 0.3671875	$ 0.3515625
Beginning balance at Dec. 31, 2021	4,024,853				4,026,566	193,195	$ 193,195	1,752	$ 1,752	1,713,851	$ 1,713,851	2,672,601	2,674,314	(10,317)	$ (10,317)	(546,229)		$ (546,229)
Beginning balance (Accounting Standards Update 2016-13) at Dec. 31, 2021					$ 1,713								$ 1,713
Comprehensive income:
Net income	257,360											257,360
Net other comprehensive loss during period	(245,074)													(245,074)
Comprehensive income	12,286
Ending balance at Sep. 30, 2022	3,953,952					194,112		1,752		1,710,075		2,830,877		(255,391)		(527,473)
Beginning balance at Mar. 31, 2022	3,948,287					193,195		1,752		1,708,104		2,715,118		(137,024)		(532,858)
Comprehensive income:
Net income	86,824											86,824
Net other comprehensive loss during period	(45,764)													(45,764)
Comprehensive income	41,060
Common stock issued:
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	139									(1,771)		0				1,910
Purchase of treasury stock,	(884)																(884)
Cash dividends:
Common stock	(30,331)											(30,331)
Preferred stock(a)	(2,875)											(2,875)
Stock-based compensation expense, net	3,986									3,986
Ending balance at Jun. 30, 2022	3,959,382					193,195		1,752		1,710,319		2,768,736		(182,788)		(531,832)
Cash dividends:
Preferred Stock, Dividends, Per Share, Cash Paid		0.3671875	0.3515625
Net income	96,275											96,275
Net other comprehensive loss during period	(72,603)													(72,603)
Comprehensive income	23,672
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	1,266									(3,274)		0				4,540
Purchase of treasury stock,				$ (181)													(181)
Common stock	(30,342)											(30,342)
Preferred stock(a)	(2,875)											(2,875)
Stock-based compensation expense, net	3,030									3,030
Ending balance at Sep. 30, 2022	3,953,952					194,112		1,752		1,710,075		2,830,877		(255,391)		(527,473)
Cash dividends:
Preferred Stock, Dividends, Per Share, Cash Paid		0.3671875	0.3515625
Other	0					916						(916)
Beginning balance at Dec. 31, 2022	4,015,490					194,112		1,752		1,712,733		2,904,882		(272,799)		(525,190)
Comprehensive income:
Net income	103,360											103,360
Net other comprehensive loss during period	39,211													39,211
Comprehensive income	142,571
Common stock issued:
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	1,766									(12,612)						14,379
Purchase of treasury stock,	(5,362)																(5,362)
Cash dividends:
Common stock	(32,013)											(32,013)
Preferred stock(a)	(2,875)											(2,875)
Stock-based compensation expense, net	6,086									6,086
Ending balance at Mar. 31, 2023	4,125,663					194,112		1,752		1,706,206		2,973,354		(233,588)		(516,173)
Cash dividends:
Preferred Stock, Dividends, Per Share, Cash Paid		0.3671875	0.3515625
Beginning balance at Dec. 31, 2022	4,015,490					194,112		1,752		1,712,733		2,904,882		(272,799)		(525,190)
Comprehensive income:
Net income	273,762											273,762
Net other comprehensive loss during period	(66,340)													(66,340)
Comprehensive income	207,422
Ending balance at Sep. 30, 2023	4,127,643					194,112		1,752		1,711,454		3,074,014		(339,140)		(514,549)
Beginning balance at Mar. 31, 2023	4,125,663					194,112		1,752		1,706,206		2,973,354		(233,588)		(516,173)
Comprehensive income:
Net income	87,154											87,154
Net other comprehensive loss during period	(58,054)													(58,054)
Comprehensive income	29,100
Common stock issued:
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	93									(1,677)						1,770
Purchase of treasury stock,	(884)																(884)
Cash dividends:
Common stock	(31,996)											(31,996)
Preferred stock(a)	(2,875)											(2,875)
Stock-based compensation expense, net	3,773									3,773
Ending balance at Jun. 30, 2023	4,122,874					194,112		1,752		1,708,303		3,025,637		(291,642)		(515,287)
Cash dividends:
Preferred Stock, Dividends, Per Share, Cash Paid		0.3671875	0.3515625
Net income	83,248											83,248
Net other comprehensive loss during period	(47,497)													(47,497)
Comprehensive income	35,751
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	503									(497)						999
Purchase of treasury stock,				$ (261)													$ (261)
Common stock	(31,996)											(31,996)
Preferred stock(a)	(2,875)											(2,875)
Stock-based compensation expense, net	3,648									3,648
Ending balance at Sep. 30, 2023	$ 4,127,643					$ 194,112		$ 1,752		$ 1,711,454		$ 3,074,014		$ (339,140)		$ (514,549)
Cash dividends:
Preferred Stock, Dividends, Per Share, Cash Paid		$ 0.3671875	$ 0.3515625

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Cash flows from operating activities
Net income	$ 83,248	$ 103,360	$ 96,275	$ 74,262	$ 273,762	$ 257,360
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	21,943		16,998		62,014	13,006
Depreciation and amortization					34,703	33,743
Change in MSRs valuation					(14,658)	(22,348)
Amortization of other intangible assets	2,203		2,203		6,608	6,608
Amortization and accretion on earning assets, funding, and other, net					27,394	13,280
Net amortization of tax credit investments					25,830	25,916
(Gains) on sales of investment securities, net					0	(260)
Asset (gains), net	(625)		(18)		(590)	(1,883)
Loss on mortgage banking activities, net					2,154	5,712
Mortgage loans originated and acquired for sale					(283,469)	(535,694)
Proceeds from sales of mortgage loans held for sale					254,619	620,352
Changes in certain assets and liabilities:
(Increase) in interest receivable					(26,670)	(35,254)
Increase in interest payable					69,461	1,795
(Decrease) in expense payable					(22,632)	(17,994)
Increase in net derivative position					3,721	320,972
Net change in other assets and other liabilities					(34,137)	37,018
Net cash provided by operating activities					378,110	722,330
Cash flows from investing activities
Net (increase) in loans					(1,436,901)	(3,595,331)
Purchases of:
AFS securities					(1,109,501)	(510,301)
HTM securities					(41,524)	(245,826)
FHLB and Federal Reserve Bank stocks and equity securities					(114,985)	(112,157)
Proceeds from:
Sales of AFS securities					0	1,061
Sale of FHLB and Federal Reserve Bank stocks and equity securities					131,272	259
Prepayments, calls, and maturities of AFS securities					288,313	392,275
Prepayments, calls, and maturities of HTM securities					101,847	153,163
Sales, prepayments, calls, and maturities of other assets					20,224	31,732
Premises, equipment, and software, net of disposals					(43,541)	(45,441)
Net change in tax credit and alternative investments					(19,615)	(50,386)
Net cash (used in) investing activities					(2,224,411)	(3,980,951)
Cash flows from financing activities
Net increase in deposits					2,487,225	732,347
Net (decrease) in short-term funding					(154,292)	(69,902)
Net increase (decrease) in short-term FHLB advances					(580,000)	2,583,000
Repayment of long-term FHLB advances					(568)	(413,523)
Proceeds from long-term FHLB advances					1,369	1,356
Proceeds from issuance of long-term funding					292,740	0
(Repayment) proceeds of finance lease principal					(64)	327
Proceeds from issuance of common stock for stock-based compensation plans					2,362	8,059
Cash dividends on common stock					(96,005)	(91,256)
Cash dividends on preferred stock					(8,625)	(8,625)
Net cash provided by financing activities					1,937,635	2,735,525
Net increase (decrease) in cash and cash equivalents					91,334	(523,096)
Cash and cash equivalents at beginning of period		621,455		1,025,515	621,455	1,025,515	$ 1,025,515
Cash and cash equivalents at end of period(a)	712,789		502,419		712,789	502,419	621,455
Supplemental disclosures of cash flow information
Cash paid for interest					576,221	83,337
Cash paid for income and franchise taxes					68,382	6,087
Loans and bank premises transferred to OREO					5,917	5,052
Capitalized mortgage servicing rights					2,477	6,316	$ 7,279
Loans transferred into held for sale from portfolio, net					6,833	1,789
Transfer of AFS securities to HTM securities					0	1,621,990
Unsettled trades to purchase securities					0	4,130
Gain on sale and net write-up (down) of equity securities					0	5,690
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(6,762)		0		(19,391)	0
Other Assets [Member]
Supplemental disclosures of cash flow information
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge					3,308	10,610
Other Liabilities [Member]
Supplemental disclosures of cash flow information
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge					18,652	14,703
Performance/Service Based RSAs, RSA,
Cash flows from financing activities
Purchase of treasury stock, open market purchases					(6,507)	(6,259)
Retained Earnings [Member]
Cash flows from operating activities
Net income	$ 83,248	$ 103,360	$ 96,275	$ 74,262	$ 273,762	$ 257,360

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Basis of Presentation

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the financial position, results of operations and comprehensive income, changes in stockholders’ equity, and cash flows of the Corporation and Parent Company for the periods presented, and all such adjustments are of a normal recurring nature. The consolidated financial statements include the accounts of all subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the full year.

In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and revenues and expenses for the period. Actual results could differ significantly from those estimates. Estimates that are particularly susceptible to significant change include the determination of the ACLL. Management has evaluated subsequent events for potential recognition or disclosure.

Within the tables presented, certain columns and rows may not sum due to the use of rounded numbers for disclosure purposes.

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2023

Accounting Standards Update and Change in Accounting Principle [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

The accounting and reporting policies of the Corporation conform to U.S. GAAP and to general practice within the financial services industry. A discussion of these policies can be found in Note 1 Summary of Significant Accounting Policies included in the Corporation’s 2022 Annual Report on Form 10-K.

New Accounting Pronouncements Adopted

Standard	Description	Date of adoption	Effect on financial statements
ASU 2022-02 Financial Instruments-Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures	The FASB issued these amendments to eliminate accounting guidance for TDRs by creditors in Subtopic 310-40, Receivables-Troubled Debt Restructurings by Creditors, while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty, and to require that an entity disclose current-period gross writeoffs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments-Credit Losses-Measured at Amortized Cost. The amendments in this Update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, and should be applied prospectively, except as provided in the next sentence. For the transition method related to the recognition and measurement of TDRs, an entity has the option to apply a modified retrospective transition method, resulting in a cumulative-effect adjustment to retained earnings in the period of adoption. Early adoption is permitted if an entity has adopted the amendments in Update 2016-03, including adoption in an interim period.	1st Quarter 2023	Adoption of this amendment did not have a material impact on the Corporation's results of operation, financial position or liquidity, but resulted in additional disclosure requirements related to gross charge offs by vintage year and the removal of TDR disclosures, replaced by additional disclosures on the types of modifications of loans to borrowers experiencing financial difficulties. The Corporation has adopted this update prospectively.

Future Accounting Pronouncements

The expected impact of applicable material accounting pronouncements recently issued or proposed but not yet required to be adopted are discussed in the table below. To the extent that the adoption of new accounting standards materially affects the Corporation's financial condition, results of operations, liquidity or disclosures, the impacts are discussed in the applicable sections of this financial review.

Standard	Description	Date of anticipated adoption	Effect on financial statements
ASU 2023-02 Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method	The amendments in this update permit reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. A reporting entity may make an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. The amendments in this update also remove certain guidance for Qualified Affordable Housing Project investments and require the application of the delayed equity contribution guidance to all tax equity investments. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and must be applied on either a modified retrospective or a retrospective basis. Early adoption is permitted in any interim period, however if adopted in an interim period the entity shall adopt the amendments in this update as of the beginning of the fiscal year that includes the interim period.	1st Quarter 2024	The Corporation is currently evaluating the impact on its results of operation, financial position, liquidity, and disclosures.

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Earnings Per Common Share

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings Per Common Share

Earnings per common share are calculated utilizing the two-class method. Basic earnings per common share are calculated by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding. Diluted earnings per common share are calculated by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding adjusted for the dilutive effect of common stock awards (outstanding stock options and unvested restricted stock awards). Presented below are the calculations for basic and diluted earnings per common share:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands, except per share data)	2023		2022		2023		2022
Net income	$	83,248	$	96,275	$	273,762	$	257,360
Preferred stock dividends	(2,875)		(2,875)		(8,625)		(8,625)
Net income available to common equity	$	80,373	$	93,400	$	265,137	$	248,735
Common shareholder dividends	(31,806)		(30,149)		(95,417)		(90,647)
Unvested share-based payment awards	(190)		(194)		(588)		(609)
Undistributed earnings	$	48,377	$	63,057	$	169,132	$	157,479
Undistributed earnings allocated to common shareholders	$	48,090	$	62,648	$	168,136	$	156,454
Undistributed earnings allocated to unvested share-based payment awards	287		409		996		1,025
Undistributed earnings	$	48,377	$	63,057	$	169,132	$	157,479
Basic
Distributed earnings to common shareholders	$	31,806	$	30,149	$	95,417	$	90,647
Undistributed earnings allocated to common shareholders	48,090		62,648		168,136		156,454
Total common shareholders earnings, basic	$	79,896	$	92,796	$	263,553	$	247,102
Diluted
Distributed earnings to common shareholders	$	31,806	$	30,149	$	95,417	$	90,647
Undistributed earnings allocated to common shareholders	48,090		62,648		168,136		156,454
Total common shareholders earnings, diluted	$	79,896	$	92,796	$	263,553	$	247,102
Weighted average common shares outstanding	150,035		149,321		149,929		149,063
Effect of dilutive common stock awards	980		942		1,042		1,141
Diluted weighted average common shares outstanding	151,014		150,262		150,971		150,205
Basic earnings per common share	$	0.53	$	0.62	$	1.76	$	1.66
Diluted earnings per common share	$	0.53	$	0.62	$	1.75	$	1.65

Approximately 4 million and 3 million anti-dilutive common stock shares were excluded from the earnings per common share calculation for the three months ended September 30, 2023 and 2022, respectively, and approximately 3 million anti-dilutive

common stock shares were excluded from the earnings per common share calculation for both the nine months ended September 30, 2023 and 2022.

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Stock-Based Compensation

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Stock-Based Compensation

Stock-Based Compensation

The fair values of stock options and restricted stock awards are amortized as compensation expense on a straight-line basis over the vesting period of the grants. For colleagues who meet the definition of retirement eligible under the 2017 Incentive Compensation Plan and the 2020 Incentive Compensation Plan, expenses related to stock options and restricted stock awards are fully recognized on the date the colleague meets the definition of normal or early retirement. Compensation expense recognized is included in personnel expense on the consolidated statements of income.

A summary of the Corporation’s stock option activity for the nine months ended September 30, 2023 is presented below:

Stock Options	Shares(a)	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value(a)
Outstanding at December 31, 2022	3,994	$	21.06	5.11 years	$	10,525
Exercised	61	17.04
Forfeited or expired	10	23.45
Outstanding at September 30, 2023	3,923	$	21.12	4.41 years	$	107
Options Exercisable at September 30, 2023	3,709	$	21.30	4.29 years	$	81

(a) In thousands

Intrinsic value represents the amount by which the fair market value of the underlying stock exceeds the exercise price of the stock option. For the nine months ended September 30, 2023, the intrinsic value of stock options exercised was approximately $272,000, compared to $3 million for the nine months ended September 30, 2022. For the nine months ended September 30, 2023, the total fair value of stock options vested was approximately $955,000 compared to $2 million for the nine months ended September 30, 2022.

The Corporation recognized compensation expense for the vesting of stock options of approximately $265,000 for the nine months ended September 30, 2023, compared to approximately $587,000 for the nine months ended September 30, 2022. At September 30, 2023, the Corporation had approximately $113,000 of unrecognized compensation expense related to stock options that is expected to be recognized over the remaining requisite service periods that extend predominately through the first quarter of 2024.

The Corporation also has issued time-based and performance-based restricted stock awards under the 2017 Incentive Compensation Plan and subsequent 2020 Incentive Compensation Plan. Performance awards are based on performance goals determined by the Compensation and Benefits Committee of the Corporation's Board of Directors, with vesting ranging from a minimum of 0% to a maximum of 150% of the target award. Performance awards are valued utilizing a Monte Carlo simulation model to estimate fair value of the awards at the grant date.

The following table summarizes information about the Corporation’s restricted stock awards activity for the nine months ended September 30, 2023:

Restricted Stock	Shares(a)	Weighted Average Grant Date Fair Value
Outstanding at December 31, 2022	2,303	$	20.81
Granted	830	22.47
Vested	771	21.01
Forfeited	35	22.10
Outstanding at September 30, 2023	2,327	$	21.32

(a) In thousands

The Corporation amortizes the expense related to restricted stock awards as compensation expense over the vesting period specified in the grant's award agreement. Performance-based restricted stock awards granted during 2022 and 2023 will cliff-vest after the three year performance period has ended. Service-based restricted stock awards granted during 2022 and 2023 will generally vest ratably over a period of four years. Expense for restricted stock awards of $14 million was recorded for the nine months ended September 30, 2023, compared to $13 million for the nine months ended September 30, 2022. Included in compensation expense for the first nine months of 2023 was $3 million of expense for the accelerated vesting of restricted stock awards granted to retirement eligible colleagues. The Corporation had $23 million of unrecognized compensation costs related to restricted stock awards at September 30, 2023 that are expected to be recognized over the remaining requisite service periods that extend predominately through the first quarter of 2027.

The Corporation has the ability to issue shares from treasury or new shares upon the exercise of stock options or the granting of restricted stock awards. The Board of Directors has authorized management to repurchase shares of the Corporation’s common stock, to be made available for issuance in connection with the Corporation’s employee incentive plans and for other corporate purposes. The repurchase of shares, if any, will be based on market and investment opportunities, capital levels, growth prospects, and regulatory constraints. Such repurchases may occur from time to time in open market purchases, block transactions, private transactions, accelerated share repurchase programs, or similar facilities.

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Investment Securities

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment Securities Investment securities are designated as AFS, HTM, or equity on the consolidated balance sheets at the time of purchase. The amortized cost and fair values of AFS and HTM securities at September 30, 2023 were as follows:

($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	$	124,555	$	—	$	(15,531)	$	109,024
Agency securities	15,000		—		(1,410)		13,590
Obligations of state and political subdivisions (municipal securities)	226,808		—		(16,492)		210,317
Residential mortgage-related securities:
FNMA/FHLMC	1,678,641		115		(241,997)		1,436,759
GNMA	1,416,569		—		(31,898)		1,384,670
Commercial mortgage-related securities:
FNMA/FHLMC	18,779		—		(2,625)		16,154
GNMA	188,667		—		(12,193)		176,474
Asset backed securities:
FFELP	140,881		83		(2,450)		138,514
SBA	3,299		9		(46)		3,261
Other debt securities	3,000		—		(85)		2,915
Total AFS investment securities	$	3,816,198	$	207	$	(324,727)	$	3,491,679
HTM investment securities
U.S. Treasury securities	$	999	$	—	$	(51)	$	948
Obligations of state and political subdivisions (municipal securities)	1,700,162		12		(279,659)		1,420,516
Residential mortgage-related securities:
FNMA/FHLMC	956,107		28,038		(220,577)		763,567
GNMA	50,489		15		(5,192)		45,312
Private-label	349,410		10,228		(85,120)		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	782,291		13,329		(206,522)		589,097
GNMA	61,025		421		(9,506)		51,940
Total HTM investment securities	$	3,900,483	$	52,043	$	(806,627)	$	3,145,898

The amortized cost and fair values of AFS and HTM securities at December 31, 2022 were as follows:

($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	$	124,441	$	—	$	(15,063)	$	109,378
Agency securities	15,000		—		(1,468)		13,532
Obligations of state and political subdivisions (municipal securities)	235,693		96		(5,074)		230,714
Residential mortgage-related securities:
FNMA/FHLMC	1,820,642		404		(216,436)		1,604,610
GNMA	502,537		314		(5,255)		497,596
Commercial mortgage-related securities:
FNMA/FHLMC	19,038		—		(1,896)		17,142
GNMA	115,031		—		(4,569)		110,462
Asset backed securities:
FFELP	157,138		—		(5,947)		151,191
SBA	4,512		15		(51)		4,477
Other debt securities	3,000		—		(78)		2,922
Total AFS investment securities	$	2,997,032	$	830	$	(255,837)	$	2,742,025
HTM investment securities
U.S. Treasury securities	$	999	$	—	$	(62)	$	936
Obligations of state and political subdivisions (municipal securities)	1,732,351		1,994		(182,697)		1,551,647
Residential mortgage-related securities:
FNMA/FHLMC	961,231		31,301		(175,760)		816,771
GNMA	52,979		85		(3,436)		49,628
Private-label	364,728		11,697		(72,920)		303,505
Commercial mortgage-related securities:
FNMA/FHLMC	778,796		15,324		(178,281)		615,839
GNMA	69,369		577		(7,254)		62,691
Total HTM investment securities	$	3,960,451	$	60,978	$	(620,411)	$	3,401,018

Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The expected maturities of AFS and HTM securities at September 30, 2023, are shown below:

	AFS					HTM
($ in thousands)	Amortized Cost		Fair Value			Amortized Cost		Fair Value
Due in one year or less	$	7,436	$	7,368		$	16,715	$	16,673
Due after one year through five years	190,843		170,918			47,774		46,115
Due after five years through ten years	136,473		125,923			155,329		144,145
Due after ten years	34,611		31,636			1,481,344		1,214,531
Total debt securities	369,363		335,846			1,701,161		1,421,464
Residential mortgage-related securities:
FNMA/FHLMC	1,678,641		1,436,759			956,107		763,567
GNMA	1,416,569		1,384,670			50,489		45,312
Private-label	—		—			349,410		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	18,779		16,154			782,291		589,097
GNMA	188,667		176,474			61,025		51,940
Asset backed securities:
FFELP	140,881		138,514			—		—
SBA	3,299		3,261			—		—
Total investment securities	$	3,816,198	$	3,491,679		$	3,900,483	$	3,145,898
Ratio of fair value to amortized cost			91.5		%			80.7		%

On a quarterly basis, the Corporation refreshes the credit quality of each HTM security. The following table summarizes the credit quality indicators of HTM securities at amortized cost at September 30, 2023:

($ in thousands)	AAA		AA		A		Not Rated		Total
U.S. Treasury securities	$	999	$	—	$	—	$	—	$	999
Obligations of state and political subdivisions (municipal securities)	769,052		923,707		6,248		1,156		1,700,162
Residential mortgage-related securities:
FNMA/FHLMC	956,107		—		—		—		956,107
GNMA	50,489		—		—		—		50,489
Private-label	349,410		—		—		—		349,410
Commercial mortgage-related securities:
FNMA/FHLMC	782,291		—		—		—		782,291
GNMA	61,025		—		—		—		61,025
Total HTM securities	$	2,969,372	$	923,707	$	6,248	$	1,156	$	3,900,483

The following table summarizes the credit quality indicators of HTM securities at amortized cost at December 31, 2022:

($ in thousands)	AAA		AA		A		Not Rated		Total
U.S. Treasury securities	$	999	$	—	$	—	$	—	$	999
Obligations of state and political subdivisions (municipal securities)	806,529		917,059		7,604		1,158		1,732,351
Residential mortgage-related securities:
FNMA/FHLMC	961,231		—		—		—		961,231
GNMA	52,979		—		—		—		52,979
Private-label	364,728		—		—		—		364,728
Commercial mortgage-related securities:
FNMA/FHLMC	778,796		—		—		—		778,796
GNMA	69,369		—		—		—		69,369
Total HTM securities	$	3,034,630	$	917,059	$	7,604	$	1,158	$	3,960,451

The following table summarizes gross realized gains and losses on AFS securities, net write-up of equity securities, and proceeds from the sale of AFS investment securities for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Gross realized gains on AFS securities	$	—	$	—	$	—	$	21
Gross realized (losses) on AFS securities	—		—		—		(8)
Gain on sale and net write-up (down) of equity securities	(11)		5,664		55		5,664
Investment securities gains (losses), net	$	(11)	$	5,664	$	55	$	5,676
Proceeds from sales of AFS investment securities	$	—	$	—	$	—	$	1,061

During the third quarter of 2022, the Corporation sold its Visa Class B restricted shares obtained in the acquisition of First Staunton, which were carried at a zero-cost basis. The remaining shares, which are carried at fair value, were subsequently written up to reflect the new observable price resulting from that sale.

Investment securities with a carrying value of $1.6 billion and $2.3 billion at September 30, 2023 and December 31, 2022, respectively, were pledged as required to secure certain deposits or for other purposes.

Accrued interest receivable on HTM securities totaled $16 million and $19 million at September 30, 2023 and December 31, 2022, respectively. Accrued interest receivable on AFS securities totaled $14 million and $9 million at September 30, 2023 and December 31, 2022, respectively. Accrued interest receivable on both HTM and AFS securities is included in interest receivable on the consolidated balance sheets. There was no interest income reversed for investments going into nonaccrual at both September 30, 2023 and December 31, 2022.

A security is considered past due once it is 30 days past due under the terms of the agreement. At both September 30, 2023 and December 31, 2022, the Corporation had no past due HTM securities.

The allowance for credit losses on HTM securities was approximately $67,000 at September 30, 2023 and approximately $54,000 at December 31, 2022, attributable entirely to the Corporation's municipal securities, included in HTM investment securities, net, at amortized cost on the consolidated balance sheets. The Corporation also holds U.S. Treasury, municipal, and mortgage-related securities issued by the U.S. government or a GSE which are backed by the full faith and credit of the U.S. government and private-label residential mortgage-related securities that have credit enhancement which covers the first 15% of losses and, as a result, no allowance for credit losses has been recorded related to these securities.

The following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position, at September 30, 2023:

	Less than 12 months					12 months or more					Total
($ in thousands)	Number of Securities	Unrealized (Losses)		Fair Value		Number of Securities	Unrealized (Losses)		Fair Value		Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	—	$	—	$	—	7	$	(15,531)	$	109,024	$	(15,531)	$	109,024
Agency securities	—	—		—		1	(1,410)		13,590		(1,410)		13,590
Obligations of state and political subdivisions (municipal securities)	229	(6,575)		108,953		182	(9,916)		100,413		(16,492)		209,367
Residential mortgage-related securities:
FNMA/FHLMC	20	(1,390)		24,258		107	(240,606)		1,394,562		(241,997)		1,418,820
GNMA	75	(27,131)		1,271,478		17	(4,767)		61,087		(31,898)		1,332,565
Commercial mortgage-related securities:
FNMA/FHLMC	—	—		—		1	(2,625)		16,154		(2,625)		16,154
GNMA	9	(5,848)		100,659		33	(6,345)		75,815		(12,193)		176,474
Asset backed securities:
FFELP	—	—		—		14	(2,450)		129,503		(2,450)		129,503
SBA	2	(1)		620		7	(46)		1,525		(46)		2,144
Other debt securities	1	(21)		979		2	(63)		1,937		(85)		2,915
Total	336	$	(40,967)	$	1,506,947	371	$	(283,760)	$	1,903,609	$	(324,727)	$	3,410,556
HTM investment securities
U.S. Treasury securities	—	$	—	$	—	1	$	(51)	$	948	$	(51)	$	948
Obligations of state and political subdivisions (municipal securities)	586	(48,660)		663,360		567	(230,998)		743,274		(279,659)		1,406,634
Residential mortgage-related securities:
FNMA/FHLMC	31	(2,239)		37,996		92	(218,338)		725,539		(220,577)		763,535
GNMA	8	(466)		11,058		78	(4,726)		34,253		(5,192)		45,312
Private-label	—	—		—		18	(85,120)		274,518		(85,120)		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	2	(2,746)		24,130		43	(203,776)		564,968		(206,522)		589,097
GNMA	—	—		—		13	(9,506)		51,940		(9,506)		51,940
Total	627	$	(54,112)	$	736,544	812	$	(752,515)	$	2,395,440	$	(806,627)	$	3,131,984

For comparative purposes, the following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2022:

	Less than 12 months					12 months or more					Total
($ in thousands)	Number of Securities	Unrealized (Losses)		Fair Value		Number of Securities	Unrealized (Losses)		Fair Value		Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	—	$	—	$	—	7	$	(15,063)	$	109,378	$	(15,063)	$	109,378
Agency securities	—	—		—		1	(1,468)		13,532		(1,468)		13,532
Obligations of state and political subdivisions (municipal securities)	358	(5,066)		201,260		4	(8)		1,916		(5,074)		203,176
Residential mortgage-related securities:
FNMA/FHLMC	24	(31,266)		260,986		84	(185,170)		1,321,420		(216,436)		1,582,406
GNMA	23	(4,415)		220,276		2	(840)		11,096		(5,255)		231,372
Commercial mortgage-related securities:
FNMA/FHLMC	1	(1,896)		17,142		—	—		—		(1,896)		17,142
GNMA	33	(3,920)		101,036		4	(649)		9,426		(4,569)		110,462
Asset backed securities:
FFELP	3	(1,668)		44,304		12	(4,278)		106,887		(5,947)		151,191
SBA	2	(1)		417		6	(50)		2,057		(51)		2,474
Other debt securities	2	(30)		1,970		1	(49)		951		(78)		2,922
Total	446	$	(48,263)	$	847,391	121	$	(207,575)	$	1,576,665	$	(255,837)	$	2,424,055
HTM investment securities
U.S. Treasury securities	1	$	(62)	$	936	—	$	—	$	—	$	(62)	$	936
Obligations of state and political subdivisions (municipal securities)	771	(96,282)		1,079,216		156	(86,415)		231,022		(182,697)		1,310,238
Residential mortgage-related securities:
FNMA/FHLMC	79	(18,925)		143,201		22	(156,836)		671,570		(175,760)		814,770
GNMA	81	(3,436)		44,476		—	—		—		(3,436)		44,476
Private-label	3	(9,509)		58,733		15	(63,411)		244,772		(72,920)		303,505
Commercial mortgage-related securities:
FNMA/FHLMC	4	(3,814)		20,338		39	(174,467)		576,911		(178,281)		597,249
GNMA	8	(2,528)		34,612		6	(4,726)		28,080		(7,254)		62,691
Total	947	$	(134,556)	$	1,381,511	238	$	(485,855)	$	1,752,354	$	(620,411)	$	3,133,865

The Corporation reviews the AFS investment securities portfolio on a quarterly basis to monitor its credit exposure. A determination as to whether a security’s decline in fair value is the result of credit risk takes into consideration numerous factors and the relative significance of any single factor can vary by security. Some factors the Corporation may consider in this impairment analysis include the extent to which the security has been in an unrealized loss position, the change in security rating, financial condition and near-term prospects of the issuer, as well as the security and industry specific economic conditions.

Based on the Corporation’s evaluation, management does not believe any unrealized losses at September 30, 2023 represent credit deterioration as these unrealized losses are primarily attributable to changes in interest rates and the current market conditions. The Corporation does not intend to sell, nor does it believe that it will be required to sell, the securities in an unrealized loss position before recovery of their amortized cost basis.

FHLB and Federal Reserve Bank stocks: The Corporation is required to maintain Federal Reserve Bank stock and FHLB stock as a member bank of both the Federal Reserve System and the FHLB, and in amounts as required by these institutions. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other marketable equity securities and their fair value is equal to amortized cost. The Corporation had FHLB stock of $182 million and $209 million at September 30, 2023 and December 31, 2022, respectively. The Corporation had Federal Reserve Bank stock of $87 million at both September 30, 2023 and December 31, 2022. Accrued interest receivable on FHLB stock totaled $3 million at both September 30, 2023 and December 31, 2022. There was approximately $958,000 of accrued interest receivable on Federal Reserve Bank Stock at September 30, 2023 and none at December 31, 2022. Accrued interest receivable on both FHLB stock and Federal Reserve Bank stock is included in interest receivable on the consolidated balance sheets.

Equity Securities

Equity securities with readily determinable fair values: The Corporation's portfolio of equity securities with readily determinable fair values is primarily comprised of CRA Qualified Investment mutual funds and other mutual funds. The Corporation had equity securities with readily determinable fair values of $7 million at September 30, 2023 and $6 million at December 31, 2022.

Equity securities without readily determinable fair values: The Corporation's portfolio of equity securities without readily determinable fair values, which primarily consists of Visa Class B restricted shares and an investment in a private SBA loan fund, was carried at $29 million and $19 million at September 30, 2023 and December 31, 2022, respectively.

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Loans

9 Months Ended

Sep. 30, 2023

Receivables [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

Loans

The period end loan composition was as follows:

($ in thousands)	Sep 30, 2023		Dec 31, 2022
Commercial and industrial	$	10,099,068	$	9,759,454
Commercial real estate — owner occupied	1,054,969		991,722
Commercial and business lending	11,154,037		10,751,176
Commercial real estate — investor	5,218,980		5,080,344
Real estate construction	2,130,719		2,155,222
Commercial real estate lending	7,349,699		7,235,565
Total commercial	18,503,736		17,986,742
Residential mortgage	8,782,645		8,511,550
Auto finance	2,007,164		1,382,073
Home equity	623,650		624,353
Other consumer	275,993		294,851
Total consumer	11,689,451		10,812,828
Total loans	$	30,193,187	$	28,799,569

Accrued interest receivable on loans totaled $136 million at September 30, 2023, and $113 million at December 31, 2022, and is included in interest receivable on the consolidated balance sheets. Interest accrued but not received is reversed against interest income when a loan is placed on nonaccrual. The amount of accrued interest reversed was approximately $347,000 and $1 million for the three and nine months ended September 30, 2023, respectively, and approximately $189,000 and $328,000 for the three and nine months ended September 30, 2022, respectively.

The following table presents loans by credit quality indicator by origination year at September 30, 2023:

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		YTD 2023		2022		2021		2020		2019		Prior		Total
Commercial and industrial:
Risk rating:
Pass	$	477	$	2,065,717	$	1,775,767	$	2,516,155	$	1,427,787	$	549,748	$	481,866	$	895,313	$	9,712,353
Special mention	39		26,400		39		39,694		8,731		3,667		—		26,136		104,666
Potential problem	829		72,533		311		51,502		57,611		20,222		4,434		623		207,237
Nonaccrual	14,756		—		13,945		20,299		18,898		21,617		—		53		74,812
Commercial and industrial	$	16,101	$	2,164,649	$	1,790,062	$	2,627,650	$	1,513,027	$	595,254	$	486,300	$	922,126	$	10,099,068
Commercial real estate - owner occupied:
Risk rating:
Pass	$	—	$	17,557	$	133,133	$	182,517	$	196,057	$	104,786	$	142,602	$	229,321	$	1,005,973
Special mention	—		421		—		2,000		7,666		2,446		4,737		—		17,269
Potential problem	—		—		748		1,177		3,334		1,205		1,807		19,520		27,792
Nonaccrual	—		—		—		1,568		2,260		—		—		108		3,936
Commercial real estate - owner occupied	$	—	$	17,978	$	133,882	$	187,262	$	209,317	$	108,436	$	149,146	$	248,950	$	1,054,969
Commercial and business lending:
Risk rating:
Pass	$	477	$	2,083,273	$	1,908,900	$	2,698,672	$	1,623,845	$	654,533	$	624,468	$	1,124,635	$	10,718,325
Special mention	39		26,821		39		41,694		16,396		6,112		4,737		26,136		121,935
Potential problem	829		72,533		1,060		52,679		60,945		21,427		6,242		20,143		235,029
Nonaccrual	14,756		—		13,945		21,868		21,158		21,617		—		161		78,748
Commercial and business lending	$	16,101	$	2,182,627	$	1,923,943	$	2,814,912	$	1,722,344	$	703,689	$	635,446	$	1,171,075	$	11,154,037
Commercial real estate - investor:
Risk rating:
Pass	$	—	$	157,976	$	500,154	$	1,278,072	$	1,181,060	$	687,373	$	459,677	$	634,704	$	4,899,015
Special mention	—		—		9,400		54,103		26,330		—		64,801		5,608		160,243
Potential problem	—		—		6,425		5,842		4,771		69,079		10,903		51,820		148,840
Nonaccrual	—		—		—		—		—		—		—		10,882		10,882
Commercial real estate - investor	$	—	$	157,976	$	515,979	$	1,338,016	$	1,212,162	$	756,452	$	535,381	$	703,014	$	5,218,980
Real estate construction:
Risk rating:
Pass	$	—	$	27,872	$	251,100	$	1,008,428	$	716,123	$	91,982	$	11,970	$	23,141	$	2,130,617
Nonaccrual	—		—		—		—		—		—		—		103		103
Real estate construction	$	—	$	27,872	$	251,100	$	1,008,428	$	716,123	$	91,982	$	11,970	$	23,244	$	2,130,719
Commercial real estate lending:
Risk rating:
Pass	$	—	$	185,848	$	751,254	$	2,286,500	$	1,897,183	$	779,355	$	471,646	$	657,845	$	7,029,632
Special mention	—		—		9,400		54,103		26,330		—		64,801		5,608		160,243
Potential problem	—		—		6,425		5,842		4,771		69,079		10,903		51,820		148,840
Nonaccrual	—		—		—		—		—		—		—		10,985		10,985
Commercial real estate lending	$	—	$	185,848	$	767,080	$	2,346,445	$	1,928,284	$	848,434	$	547,351	$	726,258	$	7,349,699
Total commercial:
Risk rating:
Pass	$	477	$	2,269,121	$	2,660,154	$	4,985,172	$	3,521,028	$	1,433,889	$	1,096,114	$	1,782,480	$	17,747,957
Special mention	39		26,821		9,439		95,797		42,727		6,112		69,538		31,744		282,178
Potential problem	829		72,533		7,485		58,521		65,716		90,506		17,144		71,963		383,869
Nonaccrual	14,756		—		13,945		21,868		21,158		21,617		—		11,146		89,732
Total commercial	$	16,101	$	2,368,474	$	2,691,023	$	5,161,357	$	3,650,628	$	1,552,123	$	1,182,797	$	1,897,334	$	18,503,736

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		YTD 2023		2022		2021		2020		2019		Prior		Total
Residential mortgage:
Risk rating:
Pass	$	—	$	—	$	294,499	$	1,725,855	$	2,176,722	$	1,585,071	$	757,087	$	2,176,012	$	8,715,245
Potential problem	—		—		—		80		—		77		347		744		1,247
Nonaccrual	—		—		142		3,098		7,003		7,506		6,742		41,662		66,153
Residential mortgage	$	—	$	—	$	294,640	$	1,729,032	$	2,183,725	$	1,592,654	$	764,176	$	2,218,418	$	8,782,645
Auto finance:
Risk rating:
Pass	$	—	$	—	$	885,528	$	1,031,283	$	82,447	$	204	$	614	$	202	$	2,000,278
Special mention	—		—		601		1,436		316		—		—		—		2,353
Nonaccrual	—		—		452		3,551		527		—		4		—		4,533
Auto finance	$	—	$	—	$	886,581	$	1,036,271	$	83,289	$	204	$	617	$	202	$	2,007,164
Home equity:
Risk rating:
Pass	$	7,318	$	514,431	$	4,986	$	35,751	$	1,671	$	1,450	$	4,703	$	51,693	$	614,685
Special mention	343		102		—		40		73		—		55		542		811
Potential problem	11		—		—		—		—		—		45		192		236
Nonaccrual	832		67		—		68		105		99		373		7,205		7,917
Home equity	$	8,504	$	514,599	$	4,986	$	35,859	$	1,849	$	1,549	$	5,175	$	59,631	$	623,650
Other consumer:
Risk rating:
Pass	$	99	$	193,494	$	5,521	$	3,933	$	2,772	$	1,234	$	514	$	67,749	$	275,217
Special mention	17		520		—		—		16		14		2		2		553
Nonaccrual	81		66		11		1		8		73		11		52		222
Other consumer	$	197	$	194,079	$	5,532	$	3,934	$	2,797	$	1,321	$	527	$	67,803	$	275,993
Total consumer:
Risk rating:
Pass	$	7,417	$	707,925	$	1,190,534	$	2,796,822	$	2,263,612	$	1,587,959	$	762,917	$	2,295,656	$	11,605,425
Special mention	360		621		601		1,476		405		14		57		543		3,717
Potential problem	11		—		—		80		—		77		392		935		1,483
Nonaccrual	913		133		604		6,718		7,644		7,679		7,129		48,919		78,826
Total consumer	$	8,701	$	708,679	$	1,191,739	$	2,805,096	$	2,271,661	$	1,595,728	$	770,495	$	2,346,054	$	11,689,451
Total loans:
Risk rating:
Pass	$	7,894	$	2,977,046	$	3,850,688	$	7,781,993	$	5,784,640	$	3,021,848	$	1,859,031	$	4,078,136	$	29,353,382
Special mention	398		27,442		10,039		97,273		43,132		6,126		69,595		32,288		285,895
Potential problem	841		72,533		7,485		58,600		65,716		90,583		17,536		72,899		385,352
Nonaccrual	15,669		133		14,549		28,585		28,801		29,295		7,129		60,065		168,558
Total loans	$	24,802	$	3,077,153	$	3,882,762	$	7,966,452	$	5,922,289	$	3,147,851	$	1,953,292	$	4,243,388	$	30,193,187

(a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination.

The following table presents loans by credit quality indicator by origination year at December 31, 2022:

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		2022		2021		2020		2019		2018		Prior		Total
Commercial and industrial:
Risk rating:
Pass	$	1,423	$	1,938,777	$	3,245,546	$	2,367,008	$	567,833	$	573,120	$	330,642	$	432,906	$	9,455,833
Special mention	—		93,209		3,411		23,607		—		—		19		32,497		152,744
Potential problem	447		24,549		41,400		4,193		21,887		38,169		218		6,133		136,549
Nonaccrual	3,926		—		5,210		—		9,119		—		—		—		14,329
Commercial and industrial	$	5,796	$	2,056,535	$	3,295,567	$	2,394,809	$	598,839	$	611,289	$	330,879	$	471,535	$	9,759,454
Commercial real estate - owner occupied:
Risk rating:
Pass	$	—	$	12,447	$	211,645	$	225,627	$	163,965	$	160,370	$	73,487	$	97,420	$	944,961
Special mention	—		—		—		—		1,136		1,491		9,713		—		12,339
Potential problem	—		1,325		1,238		11,141		5,523		10,769		370		4,055		34,422
Commercial real estate - owner occupied	$	—	$	13,772	$	212,883	$	236,769	$	170,624	$	172,630	$	83,570	$	101,475	$	991,722
Commercial and business lending:
Risk rating:
Pass	$	1,423	$	1,951,224	$	3,457,191	$	2,592,636	$	731,798	$	733,490	$	404,129	$	530,326	$	10,400,794
Special mention	—		93,209		3,411		23,607		1,136		1,491		9,732		32,497		165,083
Potential problem	447		25,874		42,638		15,335		27,410		48,938		589		10,188		170,971
Nonaccrual	3,926		—		5,210		—		9,119		—		—		—		14,329
Commercial and business lending	$	5,796	$	2,070,307	$	3,508,450	$	2,631,578	$	769,463	$	783,919	$	414,449	$	573,010	$	10,751,176
Commercial real estate - investor:
Risk rating:
Pass	$	38,412	$	106,280	$	1,633,094	$	1,419,000	$	683,121	$	530,444	$	262,858	$	210,299	$	4,845,096
Special mention	—		—		61,968		24,149		7,361		9,400		—		10,455		113,333
Potential problem	—		—		16,147		21,303		27,635		1,333		19,017		7,099		92,535
Nonaccrual	—		—		2,177		25,668		—		—		—		1,535		29,380
Commercial real estate - investor	$	38,412	$	106,280	$	1,713,387	$	1,490,120	$	718,117	$	541,177	$	281,875	$	229,387	$	5,080,344
Real estate construction:
Risk rating:
Pass	$	—	$	29,892	$	900,593	$	913,107	$	241,230	$	12,062	$	2,226	$	9,775	$	2,108,885
Special mention	—		—		—		—		12,174		33,087		—		—		45,261
Potential problem	—		—		—		—		970		—		—		—		970
Nonaccrual	—		—		—		—		—		—		—		105		105
Real estate construction	$	—	$	29,892	$	900,593	$	913,107	$	254,374	$	45,149	$	2,226	$	9,880	$	2,155,222
Commercial real estate lending:
Risk rating:
Pass	$	38,412	$	136,173	$	2,533,687	$	2,332,107	$	924,351	$	542,505	$	265,083	$	220,073	$	6,953,981
Special mention	—		—		61,968		24,149		19,535		42,487		—		10,455		158,595
Potential problem	—		—		16,147		21,303		28,605		1,333		19,017		7,099		93,505
Nonaccrual	—		—		2,177		25,668		—		—		—		1,640		29,485
Commercial real estate lending	$	38,412	$	136,173	$	2,613,980	$	2,403,227	$	972,492	$	586,326	$	284,101	$	239,267	$	7,235,565

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		2022		2021		2020		2019		2018		Prior		Total
Total commercial:
Risk rating:
Pass	$	39,835	$	2,087,396	$	5,990,879	$	4,924,743	$	1,656,149	$	1,275,996	$	669,213	$	750,399	$	17,354,774
Special mention	—		93,209		65,379		47,756		20,671		43,978		9,732		42,952		323,677
Potential problem	447		25,874		58,785		36,638		56,016		50,271		19,606		17,287		264,476
Nonaccrual	3,926		—		7,387		25,668		9,119		—		—		1,640		43,814
Total commercial	$	44,208	$	2,206,480	$	6,122,430	$	5,034,805	$	1,741,955	$	1,370,245	$	698,550	$	812,278	$	17,986,742
Residential mortgage:
Risk rating:
Pass	$	—	$	—	$	1,410,566	$	2,184,125	$	1,716,663	$	817,164	$	370,724	$	1,951,406	$	8,450,648
Special mention	—		—		—		284		96		—		—		63		444
Potential problem	—		—		455		71		—		738		29		685		1,978
Nonaccrual	—		—		8,506		3,851		6,219		3,744		5,014		31,145		58,480
Residential mortgage	$	—	$	—	$	1,419,527	$	2,188,332	$	1,722,979	$	821,645	$	375,768	$	1,983,299	$	8,511,550
Auto finance:
Risk rating:
Pass	$	—	$	—	$	1,271,205	$	106,102	$	333	$	1,267	$	446	$	61	$	1,379,414
Special mention	—		—		1,052		118		—		—		—		—		1,170
Nonaccrual	—		—		1,149		331		—		9		—		—		1,490
Auto finance	$	—	$	—	$	1,273,406	$	106,551	$	333	$	1,276	$	446	$	61	$	1,382,073
Home equity:
Risk rating:
Pass	$	7,254	$	508,212	$	31,389	$	6,508	$	2,112	$	6,197	$	6,966	$	54,827	$	616,211
Special mention	47		102		—		—		—		—		47		310		458
Potential problem	—		15		—		—		—		34		2		146		197
Nonaccrual	1,590		—		306		102		131		307		319		6,322		7,487
Home equity	$	8,891	$	508,329	$	31,695	$	6,610	$	2,243	$	6,538	$	7,333	$	61,605	$	624,353
Other consumer:
Risk rating:
Pass	$	64	$	199,942	$	7,429	$	5,256	$	2,468	$	1,238	$	174	$	77,611	$	294,117
Special mention	6		490		11		—		5		5		—		25		537
Nonaccrual	78		56		11		21		10		56		10		34		197
Other consumer	$	147	$	200,488	$	7,452	$	5,276	$	2,482	$	1,300	$	184	$	77,670	$	294,851
Total consumer:
Risk rating:
Pass	$	7,318	$	708,154	$	2,720,589	$	2,301,991	$	1,721,576	$	825,866	$	378,310	$	2,083,904	$	10,740,390
Special mention	52		592		1,063		403		101		5		47		398		2,609
Potential problem	—		15		455		71		—		772		31		831		2,175
Nonaccrual	1,668		56		9,973		4,304		6,360		4,116		5,343		37,501		67,654
Total consumer	$	9,038	$	708,817	$	2,732,080	$	2,306,769	$	1,728,037	$	830,759	$	383,731	$	2,122,635	$	10,812,828
Total loans:
Risk rating:
Pass	$	47,152	$	2,795,551	$	8,711,468	$	7,226,734	$	3,377,725	$	2,101,861	$	1,047,522	$	2,834,303	$	28,095,164
Special mention	52		93,801		66,443		48,159		20,772		43,983		9,778		43,350		326,286
Potential problem	447		25,889		59,240		36,709		56,016		51,043		19,637		18,118		266,651
Nonaccrual	5,595		56		17,360		29,972		15,479		4,116		5,343		39,141		111,467
Total loans	$	53,246	$	2,915,297	$	8,854,510	$	7,341,574	$	3,469,992	$	2,201,004	$	1,082,280	$	2,934,912	$	28,799,569

(a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination.

The following table presents gross charge offs by origination year at September 30, 2023:

			Gross Charge Offs by Origination Year
($ in thousands)	Rev Loans Amortized Cost Basis		YTD 2023		2022		2021		2020		2019		Prior		Total
Commercial and industrial	$	2,760	$	401	$	5,695	$	13,264	$	5,900	$	—	$	3,795	$	31,816
Commercial and business lending	2,760		401		5,695		13,264		5,900		—		3,795		31,816
Commercial real estate-investor	—		—		—		—		—		—		242		242
Real estate construction	—		—		—		—		—		—		25		25
Commercial real estate lending	—		—		—		—		—		—		266		266
Total commercial	2,760		401		5,695		13,264		5,900		—		4,062		32,082
Residential mortgage	—		—		128		22		148		7		410		714
Auto finance	—		254		3,355		442		—		5		—		4,056
Home equity	12		—		43		45		—		22		147		269
Other consumer	3,351		—		149		124		29		12		106		3,769
Total consumer	3,363		254		3,674		633		177		45		662		8,809
Total gross charge offs	$	6,124	$	655	$	9,369	$	13,897	$	6,077	$	45	$	4,724	$	40,891

Factors that are important to managing overall credit quality are sound loan underwriting and administration, systematic monitoring of existing loans and commitments, effective loan review on an ongoing basis, early identification of potential problems, and appropriate policies for ACLL, nonaccrual loans, and charge offs.

For commercial loans, management has determined the pass credit quality indicator to include credits exhibiting acceptable financial statements, cash flow, and leverage. If any risk exists, it is mitigated by the loan structure, collateral, monitoring, or control. For consumer loans, performing loans include credits performing in accordance with the original contractual terms.

Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Special mention credits have potential weaknesses that warrant specific attention from management. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the credit. Accruing loan modifications could be pass or special mention, depending on the risk rating on the loan. Potential problem loans are considered inadequately protected by the current net worth and paying capacity of the obligor or the collateral pledged. These loans generally have a well-defined weakness, or weaknesses, which may jeopardize liquidation of the debt, and are characterized by the distinct possibility the Corporation will sustain some loss if the deficiencies are not corrected. Management has determined commercial loan relationships in nonaccrual status, and commercial and consumer loan relationships with their terms restructured in a loan modification, meet the criteria to be individually evaluated. Commercial loans classified as special mention, potential problem, and nonaccrual are reviewed at a minimum on a quarterly basis, while pass credits, which are performing rated credits, are generally reviewed on an annual basis or more frequently if the loan renewal is less than one year or if otherwise warranted.

The following table presents loans by past due status at September 30, 2023:

	Accruing
($ in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90+ Days Past Due		Nonaccrual(a)(b)		Total
Commercial and industrial	$	10,022,308	$	671	$	835	$	441	$	74,812	$	10,099,068
Commercial real estate - owner occupied	1,049,156		1,877		—		—		3,936		1,054,969
Commercial and business lending	11,071,464		2,548		835		441		78,748		11,154,037
Commercial real estate - investor	5,197,977		10,120		1		—		10,882		5,218,980
Real estate construction	2,130,606		10		—		—		103		2,130,719
Commercial real estate lending	7,328,583		10,130		1		—		10,985		7,349,699
Total commercial	18,400,047		12,678		836		441		89,732		18,503,736
Residential mortgage	8,704,840		11,652		—		—		66,153		8,782,645
Auto finance	1,985,943		14,335		2,353		—		4,533		2,007,164
Home equity	612,045		2,876		811		—		7,917		623,650
Other consumer	272,175		1,255		625		1,715		222		275,993
Total consumer	11,575,003		30,118		3,789		1,715		78,826		11,689,451
Total loans	$	29,975,051	$	42,797	$	4,626	$	2,156	$	168,558	$	30,193,187

(a) Of the total nonaccrual loans, $114 million, or 68%, were current with respect to payment at September 30, 2023.

(b) No interest income was recognized on nonaccrual loans for the three and nine months ended September 30, 2023. In addition, there were $65 million of nonaccrual loans for which there was no related ACLL at September 30, 2023.

The following table presents loans by past due status at December 31, 2022:

	Accruing
($ in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90+ Days  Past Due		Nonaccrual(a)(b)		Total
Commercial and industrial	$	9,738,561	$	716	$	5,566	$	282	$	14,329	$	9,759,454
Commercial real estate - owner occupied	991,493		218		12		—		—		991,722
Commercial and business lending	10,730,053		934		5,578		282		14,329		10,751,176
Commercial real estate - investor	5,049,897		1,067		—		—		29,380		5,080,344
Real estate construction	2,155,077		39		—		—		105		2,155,222
Commercial real estate lending	7,204,975		1,105		—		—		29,485		7,235,565
Total commercial	17,935,028		2,040		5,578		282		43,814		17,986,742
Residential mortgage	8,443,072		9,811		63		124		58,480		8,511,550
Auto finance	1,371,176		8,238		1,170		—		1,490		1,382,073
Home equity	611,259		5,149		458		—		7,487		624,353
Other consumer	291,722		1,018		592		1,322		197		294,851
Total consumer	10,717,229		24,216		2,283		1,446		67,654		10,812,828
Total loans	$	28,652,257	$	26,256	$	7,861	$	1,728	$	111,467	$	28,799,569

(a) Of the total nonaccrual loans, $64 million, or 58%, were current with respect to payment at December 31, 2022.

(b) No interest income was recognized on nonaccrual loans for the year ended December 31, 2022. In addition, there were $11 million of nonaccrual loans for which there was no related ACLL at December 31, 2022.

Loan Modifications and Troubled Debt Restructurings

Under ASU 2022-02, effective January 1, 2023, loan modifications are reported if concessions have been granted to borrowers that are experiencing financial difficulty. Information on these loan modifications originated after the effective date is presented according to the new accounting guidance. Reporting periods prior to the adoption of ASU 2022-02 present information on TDRs under the previous disclosure requirements.

The following tables show the composition of loan modifications made to borrowers experiencing financial difficulty by the loan portfolio and type of concessions granted during the nine months ended September 30, 2023. Each of the types of concessions granted comprised less than 1% of their respective classes of loan portfolios at September 30, 2023.

	Interest Rate Concession
($ in thousands)	Amortized Cost
Commercial and industrial	$	234
Auto	169
Home equity	77
Other consumer	1,243
Total loans modified	$	1,724

	Term Extension
($ in thousands)	Amortized Cost
Residential mortgage	$	208
Home equity	26
Total loans modified	$	234

	Combination - Interest Rate Concession and Term Extension
($ in thousands)	Amortized Cost
Residential mortgage	$	830
Home equity	262
Total loans modified	$	1,092

The following tables summarize, by loan portfolio, the financial effect of the Corporation's loan modifications on the modified loans as of September 30, 2023:

Interest Rate Concession
Loan Type	Financial Effect, Weighted Average Contractual Interest Rate (Decrease) Increase
Commercial and industrial	(18)	%
Auto	(4)	%
Home equity	—	%
Other consumer	(21)	%
Weighted average of total loans modified	(10)	%

Term Extension
Loan Type	Financial Effect, Weighted Average Term Increase(a)
Residential mortgage	26 months
Home equity	78 months
Weighted average of total loans modified	32 months

(a) During the nine months ended September 30, 2023, term extensions changed the weighted average term on modified loans from 297 to 328 months.

The Corporation closely monitors the performance of loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table depicts the performance of loans that have been modified in the nine months ended September 30, 2023:

	Payment Status (Amortized Cost Basis)
($ in thousands)	Current		30-89 Days Past Due		90+ Days Past Due		Nonaccrual
Commercial and industrial	$	234	$	—	$	—	$	—
Residential mortgage	81		126		—		832
Auto	169		—		—		—
Home equity	236		—		—		130
Other consumer	1,243		—		—		—
Total loans modified	$	1,963	$	126	$	—	$	961

The following table provides the amortized cost of loan modifications by loan portfolio and type of concession that were modified in the previous nine months and subsequently had a payment default, as of September 30, 2023:

	Amortized Cost of Loan Modifications that Subsequently Defaulted
($ in thousands)	Interest Rate Concession		Term Extension		Combination Interest Rate Reduction and Term Extension
Residential mortgage	$	—	$	208	$	206
Home equity	—		—		18
Total loans modified	$	—	$	208	$	224

The following table presents nonaccrual and performing restructured loans by loan portfolio at December 31, 2022:

($ in thousands)	Performing Restructured Loans		Nonaccrual Restructured Loans(a)
Commercial and industrial	$	12,453	$	—
Commercial real estate — owner occupied	316		—
Commercial real estate — investor	128		2,074
Real estate construction	195		9
Residential mortgage	16,829		17,117
Home equity	2,148		927
Other consumer	798		—
Total restructured loans	$	32,868	$	20,127

(a) Nonaccrual restructured loans have been included within nonaccrual loans.

The following table provides the number of loans modified in a TDR by loan portfolio, the recorded investment, and unpaid principal balance for the nine months ended September 30, 2022:

($ in thousands)	Number of Loans	Recorded Investment(a)		Unpaid Principal Balance(b)
Commercial and industrial	2	$	265	$	265
Commercial real estate — investor	1	547		573
Residential mortgage	44	9,641		9,833
Home equity	12	390		412
Total loans modified	59	$	10,844	$	11,083

(a) Represents post-modification outstanding recorded investment.
(b) Represents pre-modification outstanding recorded investment.

During the nine months ended September 30, 2022, restructured loan modifications of commercial loans primarily included maturity date extensions and payment schedule modifications. Restructured loan modifications of consumer loans for the nine months ended September 30, 2022 primarily included maturity date extensions, interest rate concessions, non-reaffirmed Chapter 7 bankruptcies, or a combination of these concessions.

The following table provides the number of loans modified during the previous twelve months which subsequently defaulted during the nine months ended September 30, 2022, and the recorded investment in these restructured loans at the time of default as of September 30, 2022:

	Nine Months Ended September 30, 2022
($ in thousands)	Number of Loans	Recorded Investment
Residential mortgage	4	$	1,178

The nature and extent of the impairment of modified loans, including those which have experienced a subsequent payment default, are considered in the determination of an appropriate level of the ACLL.

Allowance for Credit Losses on Loans

The ACLL is comprised of the allowance for loan losses and the allowance for unfunded commitments. The level of the ACLL represents management’s estimate of an amount appropriate to provide for expected lifetime credit losses in the loan portfolio at the balance sheet date. The expected lifetime credit losses are the product of multiplying the Corporation's estimates of probability of default, loss given default, and the individual loan level exposure at default on an undiscounted basis. A main factor in the determination of the ACLL is the economic forecast. The forecast the Corporation used for September 30, 2023 was the Moody's baseline scenario from August 2023, which was reviewed against the September 2023 baseline scenario with no material updates made, over a 2 year reasonable and supportable period with straight-line reversion to the historical losses over the second year of the period. The allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb expected lifetime losses related to unfunded credit facilities (including unfunded loan commitments and letters of credit). See Note 11 for additional information on the change in the allowance for unfunded commitments.

The following table presents a summary of the changes in the ACLL by portfolio segment for the nine months ended September 30, 2023:

($ in thousands)	Dec 31, 2022		Charge offs		Recoveries		Net Charge offs		Provision for credit losses		Sep 30, 2023		ACLL / Loans
Allowance for loan losses
Commercial and industrial	$	119,076	$	(31,816)	$	2,322	$	(29,494)	$	34,710	$	124,292
Commercial real estate — owner occupied	9,475		—		8		8		1,976		11,459
Commercial and business lending	128,551		(31,816)		2,329		(29,487)		36,686		135,751
Commercial real estate — investor	54,398		(242)		2,789		2,547		10,520		67,466
Real estate construction	45,589		(25)		42		18		6,128		51,734
Commercial real estate lending	99,986		(266)		2,831		2,565		16,648		119,200
Total commercial	228,538		(32,082)		5,161		(26,921)		53,334		254,951
Residential mortgage	38,298		(714)		357		(358)		2,496		40,437
Auto finance	19,619		(4,056)		783		(3,273)		6,654		23,000
Home equity	14,875		(269)		921		652		(413)		15,114
Other consumer	11,390		(3,769)		744		(3,025)		3,928		12,293
Total consumer	84,182		(8,809)		2,805		(6,004)		12,666		90,844
Total loans	$	312,720	$	(40,891)	$	7,965	$	(32,925)	$	66,000	$	345,795
Allowance for unfunded commitments
Commercial and industrial	$	12,997	$	—	$	—	$	—	$	(2,365)	$	10,632
Commercial real estate — owner occupied	103		—		—		—		15		119
Commercial and business lending	13,101		—		—		—		(2,350)		10,751
Commercial real estate — investor	710		—		—		—		39		749
Real estate construction	20,583		—		—		—		(1,000)		19,583
Commercial real estate lending	21,292		—		—		—		(961)		20,331
Total commercial	34,393		—		—		—		(3,311)		31,082
Home equity	2,699		—		—		—		(17)		2,682
Other consumer	1,683		—		—		—		(672)		1,011
Total consumer	4,382		—		—		—		(689)		3,693
Total loans	$	38,776	$	—	$	—	$	—	$	(4,000)	$	34,776
Allowance for credit losses on loans
Commercial and industrial	$	132,073	$	(31,816)	$	2,322	$	(29,494)	$	32,345	$	134,924	1.34	%
Commercial real estate — owner occupied	9,579		—		8		8		1,991		11,578		1.10	%
Commercial and business lending	141,652		(31,816)		2,329		(29,487)		34,336		146,502		1.31	%
Commercial real estate — investor	55,108		(242)		2,789		2,547		10,560		68,214		1.31	%
Real estate construction	66,171		(25)		42		18		5,128		71,317		3.35	%
Commercial real estate lending	121,279		(266)		2,831		2,565		15,687		139,531		1.90	%
Total commercial	262,931		(32,082)		5,161		(26,921)		50,023		286,033		1.55	%
Residential mortgage	38,298		(714)		357		(358)		2,496		40,437		0.46	%
Auto finance	19,619		(4,056)		783		(3,273)		6,654		23,000		1.15	%
Home equity	17,574		(269)		921		652		(430)		17,797		2.85	%
Other consumer	13,073		(3,769)		744		(3,025)		3,256		13,304		4.82	%
Total consumer	88,565		(8,809)		2,805		(6,004)		11,977		94,538		0.81	%
Total loans	$	351,496	$	(40,891)	$	7,965	$	(32,925)	$	62,000	$	380,571	1.26	%

The following table presents a summary of the changes in the ACLL by portfolio segment for the year ended December 31, 2022:

($ in thousands)	Dec 31, 2021		Charge offs		Recoveries		Net Charge offs		Provision for credit losses		Dec 31, 2022		ACLL / Loans
Allowance for loan losses
Commercial and industrial	$	89,857	$	(4,491)	$	5,282	$	791	$	28,428	$	119,076
Commercial real estate — owner occupied	11,473		—		13		13		(2,011)		9,475
Commercial and business lending	101,330		(4,491)		5,295		804		26,418		128,551
Commercial real estate — investor	72,803		(50)		50		—		(18,405)		54,398
Real estate construction	37,643		(48)		106		58		7,887		45,589
Commercial real estate lending	110,446		(98)		156		58		(10,518)		99,986
Total commercial	211,776		(4,588)		5,451		862		15,900		228,538
Residential mortgage	40,787		(567)		908		341		(2,830)		38,298
Auto finance	1,999		(1,041)		98		(943)		18,563		19,619
Home equity	14,011		(587)		1,385		798		66		14,875
Other consumer	11,441		(3,363)		1,010		(2,353)		2,301		11,390
Total consumer	68,239		(5,558)		3,401		(2,157)		18,100		84,182
Total loans	$	280,015	$	(10,146)	$	8,852	$	(1,294)	$	34,000	$	312,720
Allowance for unfunded commitments
Commercial and industrial	$	18,459	$	—	$	—	$	—	$	(5,462)	$	12,997
Commercial real estate — owner occupied	208		—		—		—		(105)		103
Commercial and business lending	18,667		—		—		—		(5,566)		13,101
Commercial real estate — investor	936		—		—		—		(226)		710
Real estate construction	15,586		—		—		—		4,997		20,583
Commercial real estate lending	16,522		—		—		—		4,770		21,292
Total commercial	35,189		—		—		—		(796)		34,393
Home equity	2,592		—		—		—		107		2,699
Other consumer	1,995		—		—		—		(311)		1,683
Total consumer	4,587		—		—		—		(204)		4,382
Total loans	$	39,776	$	—	$	—	$	—	$	(1,000)	$	38,776
Allowance for credit losses on loans
Commercial and industrial	$	108,316	$	(4,491)	$	5,282	$	791	$	22,967	$	132,073	1.35	%
Commercial real estate — owner occupied	11,681		—		13		13		(2,115)		9,579		0.97	%
Commercial and business lending	119,997		(4,491)		5,295		804		20,852		141,652		1.32	%
Commercial real estate — investor	73,739		(50)		50		—		(18,631)		55,108		1.08	%
Real estate construction	53,229		(48)		106		58		12,884		66,171		3.07	%
Commercial real estate lending	126,968		(98)		156		58		(5,748)		121,279		1.68	%
Total commercial	246,965		(4,588)		5,451		862		15,104		262,931		1.46	%
Residential mortgage	40,787		(567)		908		341		(2,830)		38,298		0.45	%
Auto finance	1,999		(1,041)		98		(943)		18,563		19,619		1.42	%
Home equity	16,603		(587)		1,385		798		173		17,574		2.81	%
Other consumer	13,436		(3,363)		1,010		(2,353)		1,990		13,073		4.43	%
Total consumer	72,825		(5,558)		3,401		(2,157)		17,896		88,565		0.82	%
Total loans	$	319,791	$	(10,146)	$	8,852	$	(1,294)	$	33,000	$	351,496	1.22	%

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Goodwill and Other Intangible Assets

9 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

Goodwill

Goodwill is not amortized but is instead subject to impairment tests on at least an annual basis, and more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount.

The Corporation conducted its most recent annual impairment testing in May 2023, utilizing a qualitative assessment. Factors that management considered in this assessment included macroeconomic conditions, industry and market considerations, overall financial performance of the Corporation and each reporting unit (both current and projected), changes in management strategy, and changes in the composition or carrying amount of net assets. In addition, management considered the changes in both the Corporation's common stock price and in the KBW Nasdaq Regional Banking Index (KRX), as well as the Corporation's earnings per common share trend over the past year. Based on these assessments, management concluded that it is

more likely than not that the estimated fair value exceeded the carrying value (including goodwill) for each reporting unit. Therefore, a step one quantitative analysis was not required. There have been no events since the May 2023 impairment test that have changed the Corporation's impairment assessment conclusion. There were no impairment charges recorded in 2022 or the first nine months of 2023.

The Corporation had goodwill of $1.1 billion at both September 30, 2023 and December 31, 2022.

Core Deposit Intangibles

The Corporation has CDIs which are amortized. Changes in the gross carrying amount, accumulated amortization, and net book value for CDIs were as follows:

($ in thousands)	Nine Months Ended September 30, 2023		Year Ended Dec 31, 2022
Core deposit intangibles
Gross carrying amount at the beginning of period	$	88,109	$	88,109
Accumulated amortization	(45,435)		(38,827)
Net book value	$	42,674	$	49,282
Amortization during the period	$	6,608	$	8,811

Mortgage Servicing Rights

The Corporation sells residential mortgage loans in the secondary market and typically retains the right to service the loans sold. MSRs are not traded in active markets. As a result, a cash flow model is used to determine fair value. Key assumptions and estimates, projected prepayment speeds, assumed servicing costs, ancillary income, costs to service delinquent loans, costs of foreclosure, and discount rates with option-adjusted spreads, are used in measuring the fair value of the MSRs asset. These assumptions are considered significant unobservable inputs. See Note 11 for a discussion of the recourse provisions on sold residential mortgage loans. See Note 12 which further discusses fair value measurement relative to the MSRs asset.

A summary of changes in the balance of the MSRs asset under the fair value measurement method for the nine months ended September 30, 2023 and the year ended December 31, 2022 is as follows:

($ in thousands)	Nine Months Ended September 30, 2023			Year Ended Dec 31, 2022
Mortgage servicing rights
Mortgage servicing rights at beginning of period	$	77,351		$	54,862
Cumulative effect of accounting methodology change	N/A			2,296
Balance at beginning of period, adjusted	$	77,351		$	57,158
Additions	2,477			7,279
Paydowns	(5,354)			(9,350)
Valuation:
Change in fair value model assumptions	8,338			5,715
Changes in fair value of asset	6,320			16,549
Mortgage servicing rights at end of period	$	89,131		$	77,351
Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)	$	6,451,969		$	6,711,820
Mortgage servicing rights to servicing portfolio	1.38		%	1.15		%

The projections of amortization expense for CDIs and decay for MSRs are based on existing asset balances, the current interest rate environment, and prepayment speeds as of September 30, 2023. The actual expense the Corporation recognizes in any given period may be significantly different depending upon acquisition or sale activities, changes in interest rates, prepayment speeds, market conditions, regulatory requirements, and events or circumstances that indicate the carrying amount of an asset may not be recoverable. The following table shows the estimated future amortization expense for CDIs and decay for MSRs:

($ in thousands)	Core Deposit Intangibles		Mortgage Servicing Rights
Three months ended December 31, 2023	$	2,203	$	3,630
2024	8,811		13,789
2025	8,811		12,373
2026	8,811		11,111
2027	8,811		9,768
2028	3,485		8,641
Beyond 2028	1,742		29,819
Total estimated amortization expense and MSRs decay	$	42,674	$	89,131

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Short and Long-Term Funding

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Short and Long-Term Funding

Short and Long-Term Funding

The following table presents the components of short-term funding (funding with original contractual maturities of one year or less), and long-term funding (funding with original contractual maturities greater than one year):

($ in thousands)	Sep 30, 2023		Dec 31, 2022
Short-term funding
Federal funds purchased	$	300,000	$	344,170
Securities sold under agreements to repurchase	151,644		240,969
Federal funds purchased and securities sold under agreements to repurchase	451,644		585,139
Commercial paper	—		20,798
Total short-term funding	$	451,644	$	605,937
Long-term funding
Corporation subordinated notes, at par	$	550,000	$	250,000
Discount and capitalized costs	(8,027)		(544)
Subordinated debt fair value hedge(a)	(12,919)		(1,855)
Finance leases	405		469
Total long-term funding	$	529,459	$	248,071
Total short and long-term funding, excluding FHLB advances	$	981,103	$	854,007
FHLB advances
Short-term FHLB advances	$	2,545,000	$	3,125,000
Long-term FHLB advances	1,209,938		1,209,170
FHLB advances fair value hedge(a)	(21,897)		(14,308)
Total FHLB advances	$	3,733,041	$	4,319,861
Total short and long-term funding	$	4,714,145	$	5,173,869

(a) For additional information on the fair value hedges, see Note 9.

Securities Sold Under Agreements to Repurchase

The Corporation enters into agreements under which it sells securities subject to an obligation to repurchase the same or similar securities. Under these arrangements, the Corporation may transfer legal control over the assets but still retain effective control through an agreement that both entitles and obligates the Corporation to repurchase the assets. The obligation to repurchase the securities is reflected as a liability on the Corporation’s consolidated balance sheets, while the securities underlying the repurchase agreements remain in the respective investment securities asset accounts (i.e., there is no offsetting or netting of the investment securities assets with the repurchase agreement liabilities).

The Corporation utilizes repurchase agreements to facilitate the needs of its customers. The fair value of securities pledged to secure repurchase agreements may decline. At September 30, 2023, the Corporation had pledged securities valued at 164% of the gross outstanding balance of repurchase agreements to manage this risk.

The remaining contractual maturity of the securities sold under agreements to repurchase on the consolidated balance sheets as of September 30, 2023 and December 31, 2022 are presented in the following table:

	Overnight and Continuous
($ in thousands)	Sep 30, 2023		Dec 31, 2022
Repurchase agreements
Agency mortgage-related securities	$	151,644	$	240,969

Long-Term Funding

Subordinated Notes 

In November 2014, the Corporation issued $250 million of 10-year subordinated notes, due January 2025, and callable October 2024. The subordinated notes have a fixed coupon interest rate of 4.25% and were issued at a discount.

In February 2023, the Corporation issued $300 million of 10-year subordinated notes, due March 1, 2033 and redeemable (i) on the reset date of March 1, 2028 and on any interest payment date thereafter, (ii) at any time on or after the three month period prior to the maturity date, and (iii) upon the occurrence of a Regulatory Capital Treatment Event (as defined in the Global Note). The subordinated notes have a fixed coupon interest rate of 6.625% until the reset date, after which the rate will be equal to the Five-Year U.S. Treasury Rate as of the reset date plus 2.812% per annum. The notes were issued at a discount.

Finance Leases

Finance leases are used in conjunction with branch operations. See Note 16 for additional disclosure regarding the Corporation’s leases.

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Derivative and Hedging Activities

9 Months Ended

Sep. 30, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative and Hedging Activities

Derivative and Hedging Activities

The Corporation is exposed to certain risk arising from both its business operations and economic conditions. The Corporation principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Corporation manages economic risks, including interest rate, liquidity, foreign currency, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Corporation enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the values of which are determined by interest rates and/or foreign currency exchange rates. The Corporation's derivative financial instruments are used to manage differences in the amount, timing, and duration of the Corporation's known or expected cash receipts and its known or expected cash payments principally related to the Corporation's assets.

The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amounts to be exchanged between the counterparties. The Corporation is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. To mitigate the counterparty risk, contracts generally contain language outlining collateral pledging requirements for each counterparty. For non-centrally cleared derivatives, collateral must be posted when the market value exceeds certain mutually agreed upon threshold limits. Securities and cash are often pledged as collateral. The Corporation pledged $95 million and $92 million of investment securities as collateral at September 30, 2023 and December 31, 2022, respectively. Cash is often pledged as collateral for derivatives that are not centrally cleared. The Corporation had no required cash collateral at September 30, 2023, compared to $3 million at December 31, 2022.

To qualify for hedge accounting, a hedging relationship must be highly effective at mitigating the risk associated with the exposure being hedged. The Corporation performs effectiveness assessments of its derivative financial instruments prospectively at inception and both prospectively and retrospectively quarterly thereafter. The initial prospective assessment is performed on a quantitative basis unless the hedging relationship meets certain conditions, and subsequent assessments are performed on a quantitative basis unless certain conditions are met where a qualitative basis may be used. If it is determined that a derivative financial instrument is not highly effective at hedging the designated exposure, hedge accounting is discontinued.

Federal regulations require the Corporation to clear all compound SOFR interest rate swaps through a clearing house, if possible. For derivatives cleared through central clearing houses, the variation margin payments are legally characterized as daily settlements of the derivative rather than collateral. The Corporation's clearing agent for interest rate derivative contracts that are centrally cleared through the Chicago Mercantile Exchange and the London Clearing House settles the variation margin daily. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. Depending on the net position, the fair value is reported in other assets or accrued expenses and other liabilities on the consolidated balance sheets. The daily settlement of the derivative exposure does not change or reset the contractual terms of the instrument.

Fair Value Hedges of Interest Rate Risk

The Corporation is exposed to changes in the fair value of its fixed-rate debt due to changes in benchmark interest rates. The Corporation uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rates. Interest rate swaps designated as fair value hedges involve receiving payment of fixed-rate amounts from a counterparty in exchange for the Corporation paying variable-rate payments over the life of the agreements without the exchange of the underlying notional amount.

For derivatives designated and that qualify as fair value hedges, as allowed under U.S. GAAP, the Corporation applied the "shortcut" method of accounting, which permits the assumption of perfect effectiveness. The gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in interest expense. These items, along with the net interest from the derivative, are reported in the same income statement line as the fixed-rate debt expense.

Fair Value Hedges of Foreign Currency Exchange Rate Risk

The Corporation is exposed to changes in the fair value of its foreign currency denominated loans due to changes in foreign currency exchange rates. The Corporation uses foreign currency exchange forward contracts to manage its exposure to changes in fair value on these foreign currency denominated loans.

To assess effectiveness of the foreign currency exchange forward contracts, the Corporation has elected to utilize the critical terms match method. Under the critical terms match method, if the hedging relationship meets certain criteria, it allows the Corporation to assume that the hedging relationship is perfectly effective, eliminating the quantitative aspect of assessing effectiveness. The gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in capital markets, net.

Cash Flow Hedges of Interest Rate Risk

The Corporation is exposed to variability in cash flows on its floating rate assets due to changes in benchmark interest rates. The Corporation uses interest rate swaps to hedge certain forecasted transactions for the variability in cash flows attributable to the contractually specified interest rate in order to add stability to net interest income and to manage its exposure to interest rate movements. Interest rate swaps designated as cash flow hedges involve receiving fixed-rate amounts from a counterparty in exchange for the Corporation making variable-rate payments over the life of the agreements without the exchange of the underlying notional amount. These items, along with the net interest from the derivative, are reported in the same income statement line as the interest income from the floating-rate assets.

To assess effectiveness of interest rate swaps, the Corporation performs a quantitative analysis using a period by period regression method. When the relationship between the hedged item and hedging instrument is highly effective at achieving offsetting changes in cash flows attributable to the hedged risk, changes in the fair value of these cash flow hedges are recorded in accumulated other comprehensive income (loss) and are subsequently reclassified to interest income as interest payments are made on such variable rate loans.

Derivatives to Accommodate Customer Needs

The Corporation facilitates customer borrowing activity by entering into various derivative contracts which are designated as free standing derivative contracts. Free standing derivative products are entered into primarily for the benefit of commercial customers seeking to manage their exposures to interest rate risk and foreign currency. These derivative contracts are not designated against specific assets and liabilities on the consolidated balance sheets or forecasted transactions and, therefore, do not qualify for hedge accounting treatment. Such derivative contracts are carried at fair value in other assets and accrued expenses and other liabilities on the consolidated balance sheets with changes in the fair value recorded as a component of capital markets, net, and typically include interest rate-related instruments (swaps and caps) and foreign currency exchange forwards. See Note 10 for additional information and disclosures on balance sheet offsetting.

Interest rate-related and other instruments: The Corporation provides interest rate risk management services to commercial customers, primarily interest rate swaps and caps. The Corporation’s market risk from unfavorable movements in interest rates related to these derivative contracts is generally economically hedged by concurrently entering into offsetting derivative contracts. The offsetting derivative contracts have identical notional values, terms, and indices, except in rare circumstances where the indices are not identical which creates a negligible basis mismatch. The Corporation also enters into credit risk participation agreements with financial institution counterparties for interest rate swaps related to loans as either a participant or a lead bank. The risk participation agreements entered into by the Corporation as a participant bank provide credit protection to the financial institution counterparty should the borrower fail to perform on its interest rate derivative contract with that financial institution.

Foreign currency exchange forwards: The Corporation provides foreign currency exchange services to customers, primarily forward contracts. The Corporation's customers enter into a foreign currency exchange forward with the Corporation as a means for them to mitigate exchange rate risk. The Corporation mitigates its risk by then entering into an offsetting foreign currency exchange derivative contract.

Mortgage Derivatives

Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments are recorded in other assets and accrued expenses and other liabilities on the consolidated balance sheets with the changes in fair value recorded as a component of mortgage banking, net on the consolidated statements of income.

Interest rate-related instruments for MSRs hedge: The fair value of the Corporation's MSRs asset changes in response to changes in primary mortgage loan rates and other assumptions. To mitigate the earnings volatility caused by changes in the fair value of MSRs, the Corporation designates certain financial instruments as an economic hedge. Changes in the fair value of these instruments are generally expected to partially offset changes in the fair value of MSRs and are recorded in other assets and accrued expenses and other liabilities on the consolidated balance sheets with the changes in fair value recorded as a component of mortgage banking, net on the consolidated statements of income.

The following table presents the total notional amounts and gross fair values of the Corporation’s derivatives, as well as the balance sheet netting adjustments as of September 30, 2023 and December 31, 2022. The derivative assets and liabilities are presented on a gross basis prior to the application of bilateral collateral and master netting agreements, but after the variation margin payments with central clearing organizations have been applied as settlement, as applicable. Total derivative assets and liabilities are adjusted to take into consideration the effects of legally enforceable master netting agreements and cash collateral received or paid as of September 30, 2023 and December 31, 2022. The resulting net derivative asset and liability fair values are included in other assets and accrued expenses and other liabilities, respectively, on the consolidated balance sheets.

	Sep 30, 2023								Dec 31, 2022
	Asset				Liability				Asset				Liability
($ in thousands)	Notional Amount		Fair Value		Notional Amount		Fair Value		Notional Amount		Fair Value		Notional Amount		Fair Value
Designated as hedging instruments:
Interest rate-related instruments	$	1,150,000	$	2,109	$	1,700,000	$	21,520	$	900,000	$	4,349	$	1,150,000	$	1,260
Foreign currency exchange forwards	353,217		2,886		70,019		134		261,595		416		167,088		972
Total designated as hedging instruments			4,995				21,654				4,765				2,233
Not designated as hedging instruments:
Interest rate-related and other instruments	3,022,150		140,414		6,320,192		294,062		4,246,823		62,401		4,599,391		251,398
Foreign currency exchange forwards	74,245		1,751		63,309		1,393		68,570		437		34,240		402
Mortgage banking(a)(b)	43,436		1,213		84,000		—		21,265		86		33,000		46
Total not designated as hedging instruments			143,379				295,455				62,925				251,847
Gross derivatives before netting			148,373				317,109				67,690				254,079
Less: Legally enforceable master netting agreements			1,252				1,252				2,788				2,788
Less: Cash collateral pledged/received			88,207				—				26,898				217
Total derivative instruments, after netting			$	58,915			$	315,857			$	38,003			$	251,073

(a) The notional amount of the mortgage derivative asset includes interest rate lock commitments, while the notional amount of the mortgage derivative liability includes forward commitments.
(b) At September 30, 2023, the mortgage derivative asset included approximately $806,000 of forward commitments fair value.

The following table presents amounts that were recorded on the consolidated balance sheets related to cumulative basis adjustments for fair value hedges:

	Line Item in the Consolidated Balance Sheets in Which the Hedged Item is Included
	Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)		Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)
($ in thousands)	September 30, 2023				December 31, 2022
Other long-term funding	$	(537,081)	$	12,919	$	(248,145)	$	1,855
FHLB advances	(578,103)		21,897		(585,692)		14,308
Total	$	(1,115,185)	$	34,815	$	(833,837)	$	16,163

(a) Excludes hedged items where only foreign currency risk is the designated hedged risk. At September 30, 2023 and December 31, 2022, the carrying amount excluded for foreign currency denominated loans was $423 million and $429 million, respectively.

The Corporation terminated its $500 million fair value hedge during the fourth quarter of 2019. At September 30, 2023, the amortized cost basis of the closed portfolios which had previously been used in the terminated hedging relationship was $292 million and is included in loans on the consolidated balance sheets. This amount includes $1 million of hedging adjustments on the discontinued hedging relationships, which are not presented in the table above.

The tables below identify the effect of fair value and cash flow hedge accounting on the Corporation's consolidated statements of income for the three and nine months ended September 30, 2023 and 2022:

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value and Cash Flow Hedging Relationships
	Three months ended Sep 30,								Nine Months Ended Sep 30,
	2023				2022				2023				2022
($ in thousands)	Interest Income		Interest Expense		Interest Income		Interest Expense		Interest Income		Interest Expense		Interest Income		Interest Expense
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value or cash flow hedges are recorded(a)	$	(4,589)	$	5,195	$	(120)	$	(380)	$	(9,286)	$	12,039	$	(428)	$	(380)
The effects of fair value and cash flow hedging: Impact on fair value hedging relationships in Subtopic 815-20
Interest contracts:
Hedged items	(74)		(9,001)		(120)		(14,703)		(189)		(18,652)		(428)		(14,703)
Derivatives designated as hedging instruments(a)	(4,516)		14,196		—		14,323		(9,097)		30,691		—		14,323

(a) Includes net settlements on the derivatives.

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value Hedging Relationships
	Three months ended Sep 30,				Nine Months Ended Sep 30,
	2023		2022		2023		2022
($ in thousands)	Capital Markets, Net		Capital Markets, Net		Capital Markets, Net		Capital Markets, Net
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value hedges are recorded	$	—	$	—	$	—	$	—
The effects of fair value hedging: Impact on fair value hedging relationships in Subtopic 815-20
Foreign currency contracts:
Hedged items	(11,575)		(29,846)		(2,186)		(40,346)
Derivatives designated as hedging instruments	11,575		29,846		2,186		40,346

The following table presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Interest rate-related instruments designated as cash flow hedging instruments
Amount of (loss) recognized in OCI on cash flow hedge derivative(a)	$	(13,592)	$	—	$	(33,976)	$	—
Amount of loss reclassified from accumulated other comprehensive income (loss) into interest income(a)	4,516		—		9,097		—

(a) The entirety of (losses) recognized in OCI as well as the losses reclassified from accumulated other comprehensive income (loss) into interest income were included components in the assessment of hedge effectiveness.

Amounts reported in accumulated other comprehensive income (loss) related to cash flow hedge derivatives are reclassified to interest income as interest payments are made on the hedged variable interest rate assets. The Corporation estimates that $18 million will be reclassified as a decrease to interest income over the next 12 months. This amount could differ from amounts actually recognized due to changes in interest rates, hedge de-designations, or the addition of other hedges subsequent to September 30, 2023. The maximum length of time over which the Corporation is hedging its exposure to the variability in future cash flows is 38 months as of September 30, 2023.

The table below identifies the effect of derivatives not designated as hedging instruments on the Corporation's consolidated statements of income for the three and nine months ended September 30, 2023 and 2022:

	Consolidated Statements of Income Category of Gain / (Loss)  Recognized in Income	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)		2023		2022		2023		2022
Derivative instruments
Interest rate-related and other instruments — customer and mirror, net	Capital markets, net	$	222	$	(33)	$	359	$	533
Interest rate-related instruments — MSRs hedge	Mortgage banking, net	(5,877)		(3,547)		(5,551)		(12,559)
Foreign currency exchange forwards	Capital markets, net	365		709		1,751		1,442
Interest rate lock commitments (mortgage)	Mortgage banking, net	(24)		(1,389)		321		(3,020)
Forward commitments (mortgage)	Mortgage banking, net	470		3,543		853		3,415

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Balance Sheet Offsetting

9 Months Ended

Sep. 30, 2023

Offsetting [Abstract]

Balance Sheet Offsetting

Balance Sheet Offsetting

Interest Rate-Related Instruments and Foreign Exchange Forwards (“Interest and Foreign Exchange Agreements”)

The Corporation enters into interest rate-related instruments to facilitate the interest rate risk management strategies of commercial customers and foreign exchange forwards to manage customers' exposure to fluctuating foreign exchange rates. The Corporation typically mitigates these risks by entering into equal and offsetting agreements with highly rated third-party financial institutions, though in rare circumstances the agreements are not perfectly equal and offsetting, which creates a negligible basis mismatch. The Corporation is party to master netting arrangements with some of its financial institution counterparties that create single net settlements of all legal claims or obligations to pay or receive the net amount of settlement of the individual interest and foreign exchange agreements. Collateral, usually in the form of investment securities and cash, is posted by the counterparty with net liability positions in accordance with contract thresholds. Derivatives subject to a legally enforceable master netting agreement are reported with assets and liabilities offset resulting in a net position which is further offset by any cash collateral, and is reported in other assets and accrued expenses and other liabilities on the face of the consolidated balance sheets. For disclosure purposes, the net position on the consolidated balance sheets can be further netted down by investment securities collateral received or pledged. See Note 9 for additional information on the Corporation’s derivative and hedging activities.

The following table presents the interest rate and foreign exchange assets and liabilities subject to an enforceable master netting arrangement as of September 30, 2023 and December 31, 2022. The interest rate and foreign exchange agreements the Corporation has with its commercial customers are not subject to an enforceable master netting arrangement and are therefore excluded from this table:

	Gross Amounts Recognized		Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets				Net Amounts Presented on the Consolidated Balance Sheets		Gross Amounts Not Offset on the Consolidated Balance Sheets
($ in thousands)			Derivative Liabilities Offset		Cash Collateral Received				Security Collateral Received		Net  Amount
Derivative assets
September 30, 2023	$	140,884	$	(1,252)	$	(88,207)	$	51,425	$	(32,257)	$	19,168
December 31, 2022	63,029		(2,788)		(26,898)		33,342		(30,753)		2,589
	Gross Amounts Recognized		Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets				Net Amounts Presented on the Consolidated Balance Sheets		Gross Amounts Not Offset on the Consolidated Balance Sheets
($ in thousands)			Derivative Assets Offset		Cash Collateral Pledged				Security Collateral Pledged		Net  Amount
Derivative liabilities
September 30, 2023	$	22,964	$	(1,252)	$	—	$	21,713	$	—	$	21,713
December 31, 2022	3,096		(2,788)		(217)		91		—		91

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Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters

Commitments, Off-Balance Sheet Arrangements, Legal Proceedings, and Regulatory Matters

The Corporation utilizes a variety of financial instruments in the normal course of business to meet the financial needs of its customers and to manage its own exposure to fluctuations in interest rates. These financial instruments include lending-related and other commitments (see below) as well as derivative instruments (see Note 9). The following is a summary of lending-related commitments:

($ in thousands)	Sep 30, 2023		Dec 31, 2022
Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale(a)(b)	$	11,228,683	$	12,444,275
Commercial letters of credit(a)	4,067		3,188
Standby letters of credit(c)	246,954		270,692

(a) These off-balance sheet financial instruments are exercisable at the market rate prevailing at the date the underlying transaction will be completed and, thus, are deemed to have no current fair value, or the fair value is based on fees currently charged to enter into similar agreements and was not material at September 30, 2023 or December 31, 2022.

(b) Interest rate lock commitments to originate residential mortgage loans held for sale are considered derivative instruments and are disclosed in Note 9.

(c) Standby letters of credit are presented excluding participations. The Corporation has established a liability of $3 million at both September 30, 2023 and December 31, 2022, as an estimate of the fair value of these financial instruments.

Lending-related Commitments

As a financial services provider, the Corporation routinely enters into commitments to extend credit. Such commitments are subject to the same credit policies and approval process accorded to loans made by the Corporation, with each customer’s creditworthiness evaluated on a case-by-case basis. The commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee. The Corporation’s exposure to credit loss in the event of nonperformance by the other party to these financial instruments is represented by the contractual amount of those instruments. The amount of collateral obtained, if deemed necessary by the Corporation upon extension of credit, is based on management’s credit evaluation of the customer. Since a significant portion of commitments to extend credit are subject to specific restrictive loan covenants or may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash flow requirements. An allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb expected lifetime losses related to unfunded commitments (including unfunded loan commitments and letters of credit).

The following table presents a summary of the changes in the allowance for unfunded commitments:

($ in thousands)	Nine Months Ended September 30, 2023		Year Ended December 31, 2022
Allowance for unfunded commitments
Balance at beginning of period	$	38,776	$	39,776
Provision for unfunded commitments	(4,000)		(1,000)
Balance at end of period	$	34,776	$	38,776

Lending-related commitments include commitments to extend credit, commitments to originate residential mortgage loans held for sale, commercial letters of credit, and standby letters of credit. Commitments to extend credit are legally binding agreements to lend to customers at predetermined interest rates, as long as there is no violation of any condition established in the contracts. Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments is recorded in other assets and accrued expenses and other liabilities on the consolidated balance sheets. The Corporation’s derivative and hedging activity is further described in Note 9. Commercial and standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party, while standby letters of credit generally are contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party.

Other Commitments

The Corporation invests in qualified affordable housing projects, historic projects, new market projects, and opportunity zone funds for the purpose of community reinvestment and obtaining tax credits and other tax benefits. Return on the Corporation's investment in these projects and funds comes in the form of the tax credits and tax losses that pass through to the Corporation, and deferral or elimination of capital gain recognition for tax purposes. The aggregate carrying value of these investments at September 30, 2023 was $222 million, compared to $250 million at December 31, 2022, included in tax credit and other investments on the consolidated balance sheets. The Corporation utilizes the proportional amortization method to account for investments in qualified affordable housing projects.

Under the proportional amortization method, the Corporation amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits. The Corporation recognized additional income tax expense attributable to the amortization of investments in qualified affordable housing projects of $26 million and $25 million for the nine months ended September 30,

2023 and September 30, 2022, respectively, and $9 million for both the three months ended September 30, 2023 and September 30, 2022. The Corporation's remaining investment in qualified affordable housing projects accounted for under the proportional amortization method totaled $219 million at September 30, 2023 and $246 million at December 31, 2022.

The Corporation’s unfunded equity contributions relating to investments in qualified affordable housing and historic projects are recorded in accrued expenses and other liabilities on the consolidated balance sheets. The Corporation’s remaining unfunded equity contributions totaled $27 million at September 30, 2023 and $40 million at December 31, 2022.

For the nine months ended September 30, 2023 and the year ended December 31, 2022, the Corporation did not record any impairment related to qualified affordable housing investments.

The Corporation has principal investment commitments to provide capital-based financing to private companies through either direct investment in specific companies or through investment funds and partnerships. The timing of future cash requirements to fund such principal investment commitments is generally dependent on the investment cycle, whereby privately held companies are funded by private equity investors and ultimately sold, merged, or taken public through an initial offering, which can vary based on overall market conditions, as well as the nature and type of industry in which the companies operate. The Corporation also invests in loan pools that support CRA loans. The timing of future cash requirements to fund these pools is dependent upon loan demand, which can vary over time. The aggregate carrying value of these investments was $34 million at September 30, 2023 and $27 million at December 31, 2022, included in tax credit and other investments on the consolidated balance sheets.

Legal Proceedings

The Corporation is party to various pending and threatened claims and legal proceedings arising in the normal course of business activities, some of which involve claims for substantial amounts. Although there can be no assurance as to the ultimate outcomes, the Corporation believes it has meritorious defenses to the claims asserted against it in its currently outstanding matters and intends to continue to defend itself vigorously with respect to such legal proceedings. The Corporation will consider settlement of cases when, in management’s judgment, it is in the best interests of the Corporation and its shareholders.

On at least a quarterly basis, the Corporation assesses its liabilities and contingencies in connection with all pending or threatened claims and litigation, utilizing the most recent information available. On a matter by matter basis, an accrual for loss is established for those matters which the Corporation believes it is probable that a loss may be incurred and that the amount of such loss can be reasonably estimated. Once established, each accrual is adjusted as appropriate to reflect any subsequent developments. Accordingly, management’s estimate will change from time to time, and actual losses may be more or less than the current estimate. For matters where a loss is not probable, or the amount of the loss cannot be estimated, no accrual is established.

Resolution of legal claims is inherently unpredictable, and in many legal proceedings various factors exacerbate this inherent unpredictability, including where the damages sought are unsubstantiated or indeterminate, it is unclear whether a case brought as a class action will be allowed to proceed on that basis, discovery is not complete, the proceeding is not yet in its final stages, the matters present legal uncertainties, there are significant facts in dispute, there are a large number of parties (including where it is uncertain how liability, if any, will be shared among multiple defendants), or there is a wide range of potential results.

Management believes that the legal proceedings currently pending against it should not have a material adverse effect on the Corporation’s consolidated financial condition. However, in light of the uncertainties involved in such proceedings, there is no assurance that the ultimate resolution of these matters will not significantly exceed the reserves the Corporation has currently accrued or that a matter will not have material reputational or other qualitative consequences. As a result, the outcome of a particular matter may be material to the Corporation’s operating results for a particular period, depending on, among other factors, the size of the loss or liability imposed and the level of the Corporation’s income for that period.

Regulatory Matters

A variety of consumer products, including mortgage and deposit products, and certain fees and charges related to such products, have come under increased regulatory scrutiny. It is possible that regulatory authorities could bring enforcement actions, including civil money penalties, or take other actions against the Corporation in regard to these consumer products. The Bank could also determine of its own accord, or be required by regulators, to refund or otherwise make remediation payments to customers in connection with these products, fees and charges. It is not possible at this time for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss related to such matters.

In recent consent orders with financial institutions, the CFPB has asserted that certain overdraft charges constitute “unfair and abusive acts and practices.” In certain instances, these financial institutions have agreed to make restitution to customers and to

pay civil money penalties. Included in the practices that the CFPB has asserted are “unfair and abusive” are 1) overdraft fees on transactions that had a sufficient balance at the time authorized but then later settled with an insufficient balance (“APSN Fees”), and 2) repeat insufficient funds fees on transactions resubmitted for payment after they were initially declined (“Representment Fees”). In light of these orders, the Corporation has undertaken a review of its current and past practices regarding APSN Fees and Representment Fees. Such review could result in changes to our overdraft fee policies, which would reduce our fee income in future periods and which could also result in a decision to make remediation payments to current and past customers who incurred such fees. The Corporation’s financial results may be materially impacted in any period in which the Corporation determines to make any such remediation payments. In addition to the review described above, the Corporation received an arbitration request in July 2023 which, among other things, seeks to recover APSN Fees and Representment Fees on behalf of approximately 1,400 current and former deposit customers of the Corporation (the “arbitration request”). The arbitration request is being considered in the review of APSN Fees and Representment Fees described above. It is not possible for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss at this time with respect to the arbitration request.

Mortgage Repurchase Reserve

The Corporation sells residential mortgage loans to investors in the normal course of business. Residential mortgage loans sold to others are predominantly conventional residential first lien mortgages originated under the Corporation's usual underwriting procedures, and are most often sold on a nonrecourse basis, primarily to the GSEs. The Corporation’s agreements to sell residential mortgage loans in the normal course of business usually require certain representations and warranties on the underlying loans sold, related to credit information, loan documentation, collateral, and insurability. Subsequent to being sold, if a material underwriting deficiency or documentation defect is discovered, the Corporation may be obligated to repurchase the loan or reimburse the GSEs for losses incurred (collectively, “make whole requests”). The make whole requests and any related risk of loss under the representations and warranties are largely driven by borrower performance. The Corporation also sells qualifying residential mortgage loans guaranteed by U.S. government agencies into GNMA pools.

As a result of make whole requests, the Corporation has repurchased loans with aggregate principal balances of $5 million and $6 million for the nine months ended September 30, 2023 and the year ended December 31, 2022, respectively. There were no loss reimbursement and settlement claims paid in the nine months ended September 30, 2023 or for the year ended December 31, 2022. Make whole requests since January 1, 2022 generally arose from loans originated since January 1, 2020 with such balances totaling $4.6 billion at the time of sale, consisting primarily of loans sold to GSEs. As of September 30, 2023, $3.3 billion of those loans originated since January 1, 2020 remain outstanding.

The balance in the mortgage repurchase reserve at the balance sheet date reflects the estimated amount of potential loss the Corporation could incur from repurchasing a loan, as well as loss reimbursements, indemnifications, and other settlement resolutions. The mortgage repurchase reserve, included in accrued expenses and other liabilities on the consolidated balance sheets, was approximately $680,000 at September 30, 2023 and $1 million at December 31, 2022.

The Corporation may also sell residential mortgage loans with limited recourse (limited in that the recourse period ends prior to the loan’s maturity, usually after certain time and/or loan paydown criteria have been met), whereby repurchase could be required if the loan had defined delinquency issues during the limited recourse periods. At September 30, 2023 and December 31, 2022, there were $15 million and $7 million, respectively, of residential mortgage loans sold with such recourse risk. There have been limited instances and immaterial historical losses on repurchases for recourse under the limited recourse criteria.

The Corporation has a subordinate position to the FHLB in the credit risk on residential mortgage loans it sold to the FHLB in exchange for a monthly credit enhancement fee. The Corporation has not sold loans to the FHLB with such credit risk retention since February 2005. At September 30, 2023 and December 31, 2022, there were $17 million and $19 million, respectively, of such residential mortgage loans with credit risk recourse, upon which there have been immaterial historical losses to the Corporation.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Fair value represents the estimated price at which an orderly transaction to sell an asset or to transfer a liability would take place between market participants at the measurement date under current market conditions (i.e., an exit price concept).

The valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis are described in the Fair Value Measurements note in the Corporation’s 2022 Annual Report on Form 10-K.

The table below presents the Corporation’s financial instruments measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022, aggregated by the level in the fair value hierarchy within which those measurements fall:

($ in thousands)	Fair Value Hierarchy	Sep 30, 2023		Dec 31, 2022
Assets
AFS investment securities:
U.S. Treasury securities	Level 1	$	109,024	$	109,378
Agency securities	Level 2	13,590		13,532
Obligations of state and political subdivisions (municipal securities)	Level 2	210,317		230,714
Residential mortgage-related securities:
FNMA / FHLMC	Level 2	1,436,759		1,604,610
GNMA	Level 2	1,384,670		497,596
Commercial mortgage-related securities:
FNMA / FHLMC	Level 2	16,154		17,142
GNMA	Level 2	176,474		110,462
Asset backed securities:
FFELP	Level 2	138,514		151,191
SBA	Level 2	3,261		4,477
Other debt securities	Level 2	2,915		2,922
Total AFS investment securities	Level 1	$	109,024	$	109,378
Total AFS investment securities	Level 2	3,382,655		2,632,647
Equity securities with readily determinable fair values	Level 1	6,701		5,991
Residential loans held for sale	Level 2	54,790		20,383
Mortgage servicing rights, net	Level 3	89,131		77,351
Interest rate-related instruments designated as hedging instruments(a)	Level 2	2,109		4,349
Foreign currency exchange forwards designated as hedging instruments(a)	Level 2	2,886		416
Interest rate-related and other instruments not designated as hedging instruments(a)	Level 2	140,414		62,401
Foreign currency exchange forwards not designated as hedging instruments(a)	Level 2	1,751		437
Interest rate lock commitments to originate residential mortgage loans held for sale	Level 3	407		86
Forward commitments to sell residential mortgage loans	Level 3	806		—
Liabilities
Interest rate-related instruments designated as hedging instruments(a)	Level 2	$	21,520	$	1,260
Foreign currency exchange forwards designated as hedging instruments(a)	Level 2	134		972
Interest rate-related and other instruments not designated as hedging instruments(a)	Level 2	294,062		251,398
Foreign currency exchange forwards not designated as hedging instruments(a)	Level 2	1,393		402
Forward commitments to sell residential mortgage loans	Level 3	—		46

(a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the
    same counterparty where there is a legally enforceable master netting agreement in place.

The table below presents a rollforward of the consolidated balance sheets amounts for the nine months ended September 30, 2023 and the year ended December 31, 2022, for the Corporation's mortgage derivatives measured on a recurring basis and classified within Level 3 of the fair value hierarchy:

($ in thousands)	Interest rate lock commitments to originate residential mortgage loans held for sale		Forward commitments to sell residential mortgage loans		Total
Balance December 31, 2021	$	2,617	$	(30)	$	2,647
New production	10,442		(2,028)		12,470
Closed loans / settlements	(913)		24,766		(25,679)
Other	(12,060)		(22,662)		10,603
Change in mortgage derivative	(2,531)		76		(2,607)
Balance December 31, 2022	$	86	$	46	$	40
New production	$	4,681	$	(1,274)	$	5,955
Closed loans / settlements	(2,417)		1,969		(4,386)
Other	(1,943)		(1,547)		(396)
Change in mortgage derivative	321		(853)		1,173
Balance September 30, 2023	$	407	$	(806)	$	1,213

The following table presents the carrying value of equity securities without readily determinable fair values still held as of September 30, 2023 that are measured under the measurement alternative and the related adjustments recorded during the periods presented for those securities with observable price changes. These securities are included in the nonrecurring fair value tables when applicable price changes are observable. Also shown are the cumulative upward and downward adjustments for the Corporation's equity securities without readily determinable fair values as of September 30, 2023:

($ in thousands)
Equity securities without readily determinable fair values
Carrying value as of December 31, 2022	$	19,225
Purchases	10,011
Carrying value as of September 30, 2023	$	29,236
Cumulative upward carrying value changes between January 1, 2018 and September 30, 2023	$	19,134
Cumulative downward carrying value changes/impairment between January 1, 2018 and September 30, 2023	$	—

The table below presents the Corporation’s assets measured at fair value on a nonrecurring basis, aggregated by the level in the fair value hierarchy within which those measurements fall:

($ in thousands)	Fair Value Hierarchy	Fair Value		Consolidated Statements of Income Category of Adjustment Recognized in Income	Adjustment Recognized on the Consolidated Statements of Income(a)
September 30, 2023
Assets
Individually evaluated loans	Level 3	$	56,506	Provision for credit losses	$	28,926
OREO(b)	Level 2	1,315		Other noninterest expense / provision for credit losses(c)	1,124
December 31, 2022
Assets
Individually evaluated loans	Level 3	$	23,584	Provision for credit losses	$	4,405
OREO(b)	Level 2	2,196		Other noninterest expense / provision for credit losses(c)	971
Equity securities without readily determinable fair values	Level 3	19,134		Investment securities gains (losses), net	5,690

(a) Includes the full year impact on the consolidated statements of income.
(b) If the fair value of the collateral exceeds the carrying amount of the asset, no charge off or adjustment is necessary, the asset is not considered to be carried at fair value and is therefore not included in the table.
(c) When a property's value is written down at the time it is transferred to OREO, the charge off is booked to the provision for credit losses. When a property is already in OREO and subsequently written down, the charge off is booked to other noninterest expense.

Certain nonfinancial assets and nonfinancial liabilities measured at fair value on a nonrecurring basis include the fair value analysis in the goodwill impairment test as well as intangible assets and other nonfinancial long-lived assets measured at fair value for the purpose of impairment assessment.

The table below presents the unobservable inputs that are readily quantifiable pertaining to Level 3 measurements:

September 30, 2023	Valuation Technique	Significant Unobservable Input	Range of Inputs			Weighted Average Input Applied
Mortgage servicing rights	Discounted cash flow	Option adjusted spread	6%	-	8%	6%
Mortgage servicing rights	Discounted cash flow	Constant prepayment rate	—%	-	100%	6%
Individually evaluated loans	Appraisals / Discounted cash flow	Collateral / Discount factor	22%	-	36%	34%
Interest rate lock commitments to originate residential mortgage loans held for sale	Discounted cash flow	Closing Ratio	48%	-	100%	84%

Fair Value of Financial Instruments

The Corporation is required to disclose estimated fair values for its financial instruments.

Fair value estimates are set forth below for the Corporation’s financial instruments:

		Sep 30, 2023				Dec 31, 2022
($ in thousands)	Fair Value Hierarchy Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets
Cash and due from banks	Level 1	$	388,694	$	388,694	$	436,952	$	436,952
Interest-bearing deposits in other financial institutions	Level 1	323,130		323,130		156,693		156,693
Federal funds sold and securities purchased under agreements to resell	Level 1	965		965		27,810		27,810
AFS investment securities	Level 1	109,024		109,024		109,378		109,378
AFS investment securities	Level 2	3,382,655		3,382,655		2,632,647		2,632,647
HTM investment securities, net	Level 1	999		948		999		936
HTM investment securities, net	Level 2	3,899,416		3,144,883		3,959,399		3,400,028
Equity securities with readily determinable fair values	Level 1	6,701		6,701		5,991		5,991
Equity securities without readily determinable fair values	NAV	10,000		10,000		—		—
Equity securities without readily determinable fair values	Level 3	19,236		19,236		19,225		19,225
FHLB and Federal Reserve Bank stocks	Level 2	268,698		268,698		295,496		295,496
Residential loans held for sale	Level 2	54,790		54,790		20,383		20,383
Loans, net	Level 3	29,847,392		28,705,298		28,486,849		27,481,426
Bank and corporate owned life insurance	Level 2	679,775		679,775		676,530		676,530
Mortgage servicing rights, net	Level 3	89,131		89,131		77,351		77,351
Derivatives (other assets)(a)	Level 2	147,160		147,160		67,603		67,603
Interest rate lock commitments to originate residential mortgage loans held for sale (other assets)	Level 3	407		407		86		86
Forward commitments to sell residential mortgage loans (other assets)	Level 3	806		806		—		—
Financial liabilities
Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts	Level 3	$	26,056,389	$	26,056,389	$	27,705,996	$	27,705,996
Brokered CDs and other time deposits(b)	Level 2	6,066,937		6,066,937		1,930,158		1,930,158
Short-term funding	Level 2	451,644		451,624		605,937		605,205
FHLB advances	Level 2	3,733,041		3,734,775		4,319,861		4,322,264
Other long-term funding	Level 2	529,459		519,337		248,071		242,151
Standby letters of credit(c)	Level 2	2,691		2,691		2,881		2,881
Derivatives (accrued expenses and other liabilities)(a)	Level 2	317,109		317,109		254,033		254,033
Forward commitments to sell residential mortgage loans (accrued expenses and other liabilities)	Level 3	—		—		46		46

(a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the
    same counterparty where there is a legally enforceable master netting agreement in place.
(b) When the estimated fair value is less than the carrying value, the carrying value is reported as the fair value.
(c) The commitment on standby letters of credit was $247 million at September 30, 2023 and $271 million at December 31, 2022. See Note 11 for additional information on the standby letters of credit and for information on the fair value of lending-related commitments.

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Retirement Plans

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Retirement Plans

Retirement Plans

The Corporation has a noncontributory defined benefit RAP, covering substantially all employees who meet participation requirements. The benefits are based primarily on years of service and the employee’s compensation paid. Employees of acquired entities generally participate in the RAP after consummation of the business combinations. Any retirement plans of acquired entities are typically merged into the RAP after completion of the mergers, and credit is usually given to employees for years of service at the acquired institution for vesting and eligibility purposes.

The Corporation also provides legacy healthcare access to a limited group of retired employees from a previous acquisition in the Postretirement Plan. There are no other active retiree healthcare plans.

The components of net periodic pension cost and net periodic benefit cost for the RAP and Postretirement Plan for the three and nine months ended September 30, 2023 and 2022 were as follows:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
RAP
Service cost	$	800	$	906	$	2,392	$	2,752
Interest cost	2,794		1,820		8,165		5,364
Expected return on plan assets	(8,243)		(6,706)		(24,647)		(20,177)
Amortization of prior service cost	(63)		(63)		(188)		(188)
Amortization of actuarial loss	—		347		37		494
Total net periodic pension cost	$	(4,713)	$	(3,696)	$	(14,241)	$	(11,754)
Postretirement Plan
Interest cost	$	20	$	13	$	59	$	40
Amortization of prior service cost	(19)		(19)		(56)		(56)
Amortization of actuarial (gain)	(7)		—		(22)		—
Total net periodic benefit cost	$	(6)	$	(6)	$	(19)	$	(17)

The components of net periodic pension cost and net periodic benefit cost, other than the service cost component, are included in the line item other of noninterest expense on the consolidated statements of income. The service cost components are included in personnel on the consolidated statements of income.

The Corporation’s funding policy is to pay at least the minimum amount required by federal law and regulations, with consideration given to the maximum funding amounts allowed. The Corporation regularly reviews the funding of its RAP. There were no contributions during 2022 or the nine months ended September 30, 2023.

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Segment Reporting

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Segment Reporting

Segment Reporting

The Corporation utilizes a risk-based internal profitability measurement system to provide strategic business unit reporting. The profitability measurement system is based on internal management methodologies designed to produce consistent results and reflect the underlying economics of the units. Certain strategic business units have been combined for segment information reporting purposes where the nature of the products and services, the type of customer, and the distribution of those products and services are similar. The three reportable segments are Corporate and Commercial Specialty; Community, Consumer, and Business; and Risk Management and Shared Services. The financial information of the Corporation’s segments has been compiled utilizing the accounting policies described in the Corporation’s 2022 Annual Report on Form 10-K, with certain exceptions. The more significant of these exceptions are described herein.

The reportable segment results are presented based on the Corporation's internal management accounting process. The management accounting policies and processes utilized in compiling segment financial information are highly subjective and, unlike financial accounting, are not based on authoritative guidance similar to U.S. GAAP. As a result, reported segments and the financial information of the reported segments are not necessarily comparable with similar information reported by other financial institutions. Furthermore, changes in management structure or allocation methodologies and procedures may result in changes in previously reported segment financial data. Additionally, the information presented is not indicative of how the segments would perform if they operated as independent entities.

To determine financial performance of each segment, the Corporation allocates FTP assignments, the provision for credit losses, certain noninterest expenses, income taxes, and equity to each segment. Allocation methodologies are subject to periodic adjustment as the internal management accounting system is revised, the interest rate environment evolves, and business or product lines within the segments change. Also, because the development and application of these methodologies is a dynamic process, the financial results presented may be periodically reviewed.

The Corporation allocates net interest income using an internal FTP methodology that charges users of funds (assets, primarily loans) and credits providers of funds (liabilities, primarily deposits) based on the maturity, prepayment and/or re-pricing characteristics of the assets and liabilities. The net effect of this allocation is offset in the Risk Management and Shared Services segment to ensure consolidated totals reflect the Corporation's net interest income. The net FTP allocation is reflected as net intersegment interest income (expense) in the accompanying tables.

The provision for credit losses is allocated to segments based on the expected long-term annual net charge off rates attributable to the credit risk of loans managed by the segment during the period. In contrast, the level of the consolidated provision for credit losses is determined based on an ACLL model using the methodologies described in the Corporation’s 2022 Annual Report on Form 10-K. The net effect of the credit provision is recorded in Risk Management and Shared Services. Indirect

expenses incurred by certain centralized support areas are allocated to segments based on actual usage (for example, volume measurements) and other criteria. Certain types of administrative expense and bank-wide expense accruals (including, when applicable, amortization of CDIs and other intangible assets associated with acquisitions, acquisition-related costs, and asset gains on disposed business units) are generally not allocated to segments. Income taxes are allocated to segments based on the Corporation’s estimated effective tax rate, with certain segments adjusted for any tax-exempt income or non-deductible expenses. Equity is allocated to the segments based on regulatory capital requirements and in proportion to an assessment of the inherent risks associated with the business of the segment (including interest, credit and operating risk).

A brief description of each business segment is presented below. A more in-depth discussion of these segments can be found in the Segment Reporting note in the Corporation’s 2022 Annual Report on Form 10-K.

The Corporate and Commercial Specialty segment serves a wide range of customers including larger businesses, developers, not-for-profits, municipalities, and financial institutions by providing lending and deposit solutions as well as the support to deliver, fund, and manage such banking solutions. In addition, this segment provides a variety of investment, fiduciary, and retirement planning products and services to individuals and small to mid-sized businesses. The Community, Consumer, and Business segment serves individuals, as well as small and mid-sized businesses, by providing lending and deposit solutions. The Risk Management and Shared Services segment includes key shared operational functions and also includes residual revenue and expenses, representing the difference between actual amounts incurred and the amounts allocated to operating segments, including interest rate risk residuals (FTP mismatches) and credit risk and provision residuals (long-term credit charge mismatches).

Information about the Corporation’s segments is presented below:

	Corporate and Commercial Specialty
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income	$	250,365	$	161,143	$	710,031	$	363,135
Net intersegment interest (expense)	(106,675)		(40,117)		(288,366)		(36,893)
Segment net interest income	143,690		121,026		421,665		326,242
Noninterest income	34,081		35,663		99,243		112,620
Total revenue	177,771		156,688		520,908		438,862
Provision for credit losses	14,066		11,904		41,523		36,803
Noninterest expense	63,207		58,934		186,351		172,141
Income before income taxes	100,498		85,851		293,034		229,918
Income tax expense	19,304		15,967		54,138		42,248
Net income	$	81,194	$	69,884	$	238,897	$	187,670
Allocated goodwill					$	525,836	$	525,836

	Community, Consumer, and Business
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income	$	67,139	$	87,156	$	219,883	$	233,699
Net intersegment interest income	123,900		49,437		317,820		98,907
Segment net interest income	191,039		136,593		537,703		332,606
Noninterest income	29,675		26,745		85,881		92,072
Total revenue	220,714		163,338		623,584		424,679
Provision for credit losses	7,381		5,378		21,467		14,958
Noninterest expense	108,185		107,860		328,960		311,423
Income before income taxes	105,148		50,100		273,158		98,298
Income tax expense	22,187		10,521		57,469		20,642
Net income	$	82,961	$	39,579	$	215,688	$	77,655
Allocated goodwill					$	579,156	$	579,156

	Risk Management and Shared Services
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income (loss)	$	(63,260)	$	16,140	$	(143,743)	$	71,498
Net intersegment (expense)	(17,225)		(9,320)		(29,454)		(62,014)
Segment net interest income (loss)	(80,485)		6,820		(173,197)		9,484
Noninterest income	2,823		8,381		9,071		16,021
Total revenue	(77,663)		15,201		(164,126)		25,505
Provision for credit losses	496		(283)		(975)		(38,756)
Noninterest expense	24,814		28,997		58,980		66,940
(Loss) before income taxes	(102,972)		(13,513)		(222,131)		(2,679)
Income tax expense (benefit)	(22,065)		(325)		(41,308)		5,286
Net (loss)	$	(80,907)	$	(13,189)	$	(180,823)	$	(7,965)
Allocated goodwill					$	—	$	—

	Consolidated Total
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income	$	254,244	$	264,439	$	786,171	$	668,332
Net intersegment interest income	—		—		—		—
Segment net interest income	254,244		264,439		786,171		668,332
Noninterest income	66,579		70,788		194,195		220,713
Total revenue	320,823		335,227		980,366		889,045
Provision for credit losses	21,943		16,998		62,014		13,006
Noninterest expense	196,205		195,791		574,291		550,503
Income before income taxes	102,674		122,438		344,061		325,536
Income tax expense	19,426		26,163		70,299		68,176
Net income	$	83,248	$	96,275	$	273,762	$	257,360
Allocated goodwill					$	1,104,992	$	1,104,992

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Accumulated Other Comprehensive Income (Loss)

9 Months Ended

Sep. 30, 2023

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)

The following tables summarize the components of accumulated other comprehensive income (loss) at September 30, 2023 and 2022, including changes during the preceding three and nine month periods as well as any reclassifications out of accumulated other comprehensive income (loss):

($ in thousands)	AFS Investment Securities		Cash Flow Hedge Derivatives		Defined Benefit Pension and Postretirement Obligations		Accumulated Other Comprehensive Income (Loss)
Balance December 31, 2022	$	(233,192)	$	3,360	$	(42,968)	$	(272,799)
Other comprehensive (loss) before reclassifications	(69,512)		—		—		(69,512)
Amounts reclassified from accumulated other comprehensive income (loss):
HTM investment securities, net, at amortized cost	6,883		—		—		6,883
Other assets / accrued expenses and other liabilities	—		(33,976)		—		(33,976)
Interest income	—		9,097		—		9,097
Personnel expense	—		—		(244)		(244)
Other expense	—		—		15		15
Income tax benefit	15,879		5,488		31		21,398
Net other comprehensive loss during period	(46,751)		(19,391)		(198)		(66,340)
Balance September 30, 2023	$	(279,943)	$	(16,032)	$	(43,166)	$	(339,140)
Balance December 31, 2021	$	(5,266)	$	—	$	(5,051)	$	(10,317)
Other comprehensive (loss) before reclassifications	(268,413)		—		—		(268,413)
Unrealized (losses) on AFS securities transferred to HTM securities	(67,604)		—		—		(67,604)
Amounts reclassified from accumulated other comprehensive income (loss):
Investment securities (gains), net	(12)		—		—		(12)
HTM investment securities, net, at amortized cost	7,269		—		—		7,269
Personnel expense	—		—		(244)		(244)
Other expense	—		—		494		494
Income tax (expense) benefit	83,906		—		(470)		83,436
Net other comprehensive (loss) during period	(244,854)		—		(221)		(245,074)
Balance September 30, 2022	$	(250,120)	$	—	$	(5,272)	$	(255,391)

($ in thousands)	AFS Investment Securities		Cash Flow Hedge Derivatives		Defined Benefit Pension and Postretirement Obligations		Accumulated Other Comprehensive Income (Loss)
Balance June 30, 2023	$	(239,273)	$	(9,270)	$	(43,099)	$	(291,642)
Other comprehensive (loss) before reclassifications	(56,924)		—		—		(56,924)
Amounts reclassified from accumulated other comprehensive income (loss):
HTM investment securities, net, at amortized cost	2,327		—		—		2,327
Other assets / accrued expenses and other liabilities	—		(13,592)		—		(13,592)
Interest income	—		4,516		—		4,516
Personnel expense	—		—		(81)		(81)
Other expense	—		—		(7)		(7)
Income tax benefit	13,928		2,315		23		16,266
Net other comprehensive (loss) during period	(40,669)		(6,762)		(66)		(47,497)
Balance September 30, 2023	$	(279,943)	$	(16,032)	$	(43,166)	$	(339,140)
Balance June 30, 2022	$	(177,726)	$	—	$	(5,062)	$	(182,788)
Other comprehensive (loss) before reclassifications	(100,092)		—		—		(100,092)
Amounts reclassified from accumulated other comprehensive income (loss):
HTM investment securities, net, at amortized cost	2,888		—		—		2,888
Personnel expense	—		—		(82)		(82)
Other expense	—		—		347		347
Income tax (expense) benefit	24,810		—		(474)		24,336
Net other comprehensive (loss) during period	(72,394)		—		(209)		(72,603)
Balance September 30, 2022	$	(250,120)	$	—	$	(5,272)	$	(255,391)

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Leases

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Leases

Leases

The Corporation has operating leases for retail and corporate offices, land, and equipment. The Corporation also has a finance lease for retail and corporate offices.

These leases have original terms of 1 year or longer with remaining maturities up to 39 years, some of which include options to extend the lease term. An analysis of the lease options has been completed and any purchase options or optional periods that the Corporation is reasonably likely to extend have been included in the capitalization.

The discount rate used to capitalize the operating leases is the Corporation's FHLB borrowing rate on the date of lease commencement. When determining the rate to discount specific lease obligations, the repayment period and term are considered.

Operating and finance lease costs and cash flows resulting from these leases are presented below:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Operating lease costs	$	1,594	$	1,637	$	4,536	$	5,361
Finance lease costs	23		23		69		96
Operating lease cash flows	1,917		1,880		5,442		6,614
Finance lease cash flows	23		22		69		103

The lease classifications on the consolidated balance sheets were as follows:

($ in thousands)	Consolidated Balance Sheets Category	Sep 30, 2023		Dec 31, 2022
Operating lease right-of-use asset	Premises and equipment	$	23,677	$	25,617
Finance lease right-of-use asset	Other assets	390		455
Operating lease liability	Accrued expenses and other liabilities	26,059		28,357
Finance lease liability	Other long-term funding	405		469

The lease payment obligations, weighted-average remaining lease term, and weighted-average original discount rate were as follows:

	Sep 30, 2023					Dec 31, 2022
($ in thousands)	Lease payments		Weighted-average lease term (in years)	Weighted-average discount rate		Lease payments		Weighted-average lease term (in years)	Weighted-average discount rate
Operating leases
Retail and corporate offices	$	23,662	5.44	2.81	%	$	26,140	5.92	2.62	%
Land	4,255		7.11	3.47	%	4,766		7.59	3.14	%
Equipment	408		2.75	4.62	%	—		0.00	—	%
Total operating leases	$	28,325	5.64	2.93	%	$	30,906	6.17	2.70	%
Finance leases
Retail and corporate offices	$	417	4.50	1.32	%	$	485	5.25	1.32	%
Total finance leases	$	417	4.50	1.32	%	$	485	5.25	1.32	%

Contractual lease payment obligations for each of the next five years and thereafter, in addition to a reconciliation to the Corporation’s lease liability, were as follows:

($ in thousands)	Operating Leases		Finance Leases		Total Leases
Three months ended December 31, 2023	$	1,509	$	23	$	1,532
2024	6,124		93		6,217
2025	5,223		93		5,315
2026	4,672		93		4,765
2027	4,014		93		4,107
Beyond 2027	6,782		23		6,805
Total lease payments	$	28,325	$	417	$	28,742
Less: interest	2,266		12		2,278
Present value of lease payments	$	26,059	$	405	$	26,464

As of September 30, 2023 and December 31, 2022, additional operating leases, primarily retail and corporate offices, that had not yet commenced totaled $4 million and $13 million, respectively. The leases that had not yet commenced as of September 30, 2023 will commence between October 2023 and December 2024 with lease terms of 1 year to 6 years.

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2023

Accounting Standards Update and Change in Accounting Principle [Abstract]

New Accounting Pronouncements Adopted

New Accounting Pronouncements Adopted

Standard	Description	Date of adoption	Effect on financial statements
ASU 2022-02 Financial Instruments-Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures	The FASB issued these amendments to eliminate accounting guidance for TDRs by creditors in Subtopic 310-40, Receivables-Troubled Debt Restructurings by Creditors, while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty, and to require that an entity disclose current-period gross writeoffs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments-Credit Losses-Measured at Amortized Cost. The amendments in this Update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, and should be applied prospectively, except as provided in the next sentence. For the transition method related to the recognition and measurement of TDRs, an entity has the option to apply a modified retrospective transition method, resulting in a cumulative-effect adjustment to retained earnings in the period of adoption. Early adoption is permitted if an entity has adopted the amendments in Update 2016-03, including adoption in an interim period.	1st Quarter 2023	Adoption of this amendment did not have a material impact on the Corporation's results of operation, financial position or liquidity, but resulted in additional disclosure requirements related to gross charge offs by vintage year and the removal of TDR disclosures, replaced by additional disclosures on the types of modifications of loans to borrowers experiencing financial difficulties. The Corporation has adopted this update prospectively.

Future Accounting Pronouncements

Future Accounting Pronouncements

The expected impact of applicable material accounting pronouncements recently issued or proposed but not yet required to be adopted are discussed in the table below. To the extent that the adoption of new accounting standards materially affects the Corporation's financial condition, results of operations, liquidity or disclosures, the impacts are discussed in the applicable sections of this financial review.

Standard	Description	Date of anticipated adoption	Effect on financial statements
ASU 2023-02 Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method	The amendments in this update permit reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. A reporting entity may make an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. The amendments in this update also remove certain guidance for Qualified Affordable Housing Project investments and require the application of the delayed equity contribution guidance to all tax equity investments. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and must be applied on either a modified retrospective or a retrospective basis. Early adoption is permitted in any interim period, however if adopted in an interim period the entity shall adopt the amendments in this update as of the beginning of the fiscal year that includes the interim period.	1st Quarter 2024	The Corporation is currently evaluating the impact on its results of operation, financial position, liquidity, and disclosures.

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Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Calculations for basic and diluted earnings per common share

Presented below are the calculations for basic and diluted earnings per common share:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands, except per share data)	2023		2022		2023		2022
Net income	$	83,248	$	96,275	$	273,762	$	257,360
Preferred stock dividends	(2,875)		(2,875)		(8,625)		(8,625)
Net income available to common equity	$	80,373	$	93,400	$	265,137	$	248,735
Common shareholder dividends	(31,806)		(30,149)		(95,417)		(90,647)
Unvested share-based payment awards	(190)		(194)		(588)		(609)
Undistributed earnings	$	48,377	$	63,057	$	169,132	$	157,479
Undistributed earnings allocated to common shareholders	$	48,090	$	62,648	$	168,136	$	156,454
Undistributed earnings allocated to unvested share-based payment awards	287		409		996		1,025
Undistributed earnings	$	48,377	$	63,057	$	169,132	$	157,479
Basic
Distributed earnings to common shareholders	$	31,806	$	30,149	$	95,417	$	90,647
Undistributed earnings allocated to common shareholders	48,090		62,648		168,136		156,454
Total common shareholders earnings, basic	$	79,896	$	92,796	$	263,553	$	247,102
Diluted
Distributed earnings to common shareholders	$	31,806	$	30,149	$	95,417	$	90,647
Undistributed earnings allocated to common shareholders	48,090		62,648		168,136		156,454
Total common shareholders earnings, diluted	$	79,896	$	92,796	$	263,553	$	247,102
Weighted average common shares outstanding	150,035		149,321		149,929		149,063
Effect of dilutive common stock awards	980		942		1,042		1,141
Diluted weighted average common shares outstanding	151,014		150,262		150,971		150,205
Basic earnings per common share	$	0.53	$	0.62	$	1.76	$	1.66
Diluted earnings per common share	$	0.53	$	0.62	$	1.75	$	1.65

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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Summary of company's stock option activities

A summary of the Corporation’s stock option activity for the nine months ended September 30, 2023 is presented below:

Stock Options	Shares(a)	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value(a)
Outstanding at December 31, 2022	3,994	$	21.06	5.11 years	$	10,525
Exercised	61	17.04
Forfeited or expired	10	23.45
Outstanding at September 30, 2023	3,923	$	21.12	4.41 years	$	107
Options Exercisable at September 30, 2023	3,709	$	21.30	4.29 years	$	81

(a) In thousands

Summary of restricted stock awards activity (excluding salary shares)

The following table summarizes information about the Corporation’s restricted stock awards activity for the nine months ended September 30, 2023:

Restricted Stock	Shares(a)	Weighted Average Grant Date Fair Value
Outstanding at December 31, 2022	2,303	$	20.81
Granted	830	22.47
Vested	771	21.01
Forfeited	35	22.10
Outstanding at September 30, 2023	2,327	$	21.32

(a) In thousands

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Investment Securities (Tables)

9 Months Ended

Sep. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Investment securities available for sale

The amortized cost and fair values of AFS and HTM securities at September 30, 2023 were as follows:

($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	$	124,555	$	—	$	(15,531)	$	109,024
Agency securities	15,000		—		(1,410)		13,590
Obligations of state and political subdivisions (municipal securities)	226,808		—		(16,492)		210,317
Residential mortgage-related securities:
FNMA/FHLMC	1,678,641		115		(241,997)		1,436,759
GNMA	1,416,569		—		(31,898)		1,384,670
Commercial mortgage-related securities:
FNMA/FHLMC	18,779		—		(2,625)		16,154
GNMA	188,667		—		(12,193)		176,474
Asset backed securities:
FFELP	140,881		83		(2,450)		138,514
SBA	3,299		9		(46)		3,261
Other debt securities	3,000		—		(85)		2,915
Total AFS investment securities	$	3,816,198	$	207	$	(324,727)	$	3,491,679
HTM investment securities
U.S. Treasury securities	$	999	$	—	$	(51)	$	948
Obligations of state and political subdivisions (municipal securities)	1,700,162		12		(279,659)		1,420,516
Residential mortgage-related securities:
FNMA/FHLMC	956,107		28,038		(220,577)		763,567
GNMA	50,489		15		(5,192)		45,312
Private-label	349,410		10,228		(85,120)		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	782,291		13,329		(206,522)		589,097
GNMA	61,025		421		(9,506)		51,940
Total HTM investment securities	$	3,900,483	$	52,043	$	(806,627)	$	3,145,898

The amortized cost and fair values of AFS and HTM securities at December 31, 2022 were as follows:

($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	$	124,441	$	—	$	(15,063)	$	109,378
Agency securities	15,000		—		(1,468)		13,532
Obligations of state and political subdivisions (municipal securities)	235,693		96		(5,074)		230,714
Residential mortgage-related securities:
FNMA/FHLMC	1,820,642		404		(216,436)		1,604,610
GNMA	502,537		314		(5,255)		497,596
Commercial mortgage-related securities:
FNMA/FHLMC	19,038		—		(1,896)		17,142
GNMA	115,031		—		(4,569)		110,462
Asset backed securities:
FFELP	157,138		—		(5,947)		151,191
SBA	4,512		15		(51)		4,477
Other debt securities	3,000		—		(78)		2,922
Total AFS investment securities	$	2,997,032	$	830	$	(255,837)	$	2,742,025
HTM investment securities
U.S. Treasury securities	$	999	$	—	$	(62)	$	936
Obligations of state and political subdivisions (municipal securities)	1,732,351		1,994		(182,697)		1,551,647
Residential mortgage-related securities:
FNMA/FHLMC	961,231		31,301		(175,760)		816,771
GNMA	52,979		85		(3,436)		49,628
Private-label	364,728		11,697		(72,920)		303,505
Commercial mortgage-related securities:
FNMA/FHLMC	778,796		15,324		(178,281)		615,839
GNMA	69,369		577		(7,254)		62,691
Total HTM investment securities	$	3,960,451	$	60,978	$	(620,411)	$	3,401,018

Investment securities held to maturity

The amortized cost and fair values of AFS and HTM securities at September 30, 2023 were as follows:

($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	$	124,555	$	—	$	(15,531)	$	109,024
Agency securities	15,000		—		(1,410)		13,590
Obligations of state and political subdivisions (municipal securities)	226,808		—		(16,492)		210,317
Residential mortgage-related securities:
FNMA/FHLMC	1,678,641		115		(241,997)		1,436,759
GNMA	1,416,569		—		(31,898)		1,384,670
Commercial mortgage-related securities:
FNMA/FHLMC	18,779		—		(2,625)		16,154
GNMA	188,667		—		(12,193)		176,474
Asset backed securities:
FFELP	140,881		83		(2,450)		138,514
SBA	3,299		9		(46)		3,261
Other debt securities	3,000		—		(85)		2,915
Total AFS investment securities	$	3,816,198	$	207	$	(324,727)	$	3,491,679
HTM investment securities
U.S. Treasury securities	$	999	$	—	$	(51)	$	948
Obligations of state and political subdivisions (municipal securities)	1,700,162		12		(279,659)		1,420,516
Residential mortgage-related securities:
FNMA/FHLMC	956,107		28,038		(220,577)		763,567
GNMA	50,489		15		(5,192)		45,312
Private-label	349,410		10,228		(85,120)		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	782,291		13,329		(206,522)		589,097
GNMA	61,025		421		(9,506)		51,940
Total HTM investment securities	$	3,900,483	$	52,043	$	(806,627)	$	3,145,898

The amortized cost and fair values of AFS and HTM securities at December 31, 2022 were as follows:

($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	$	124,441	$	—	$	(15,063)	$	109,378
Agency securities	15,000		—		(1,468)		13,532
Obligations of state and political subdivisions (municipal securities)	235,693		96		(5,074)		230,714
Residential mortgage-related securities:
FNMA/FHLMC	1,820,642		404		(216,436)		1,604,610
GNMA	502,537		314		(5,255)		497,596
Commercial mortgage-related securities:
FNMA/FHLMC	19,038		—		(1,896)		17,142
GNMA	115,031		—		(4,569)		110,462
Asset backed securities:
FFELP	157,138		—		(5,947)		151,191
SBA	4,512		15		(51)		4,477
Other debt securities	3,000		—		(78)		2,922
Total AFS investment securities	$	2,997,032	$	830	$	(255,837)	$	2,742,025
HTM investment securities
U.S. Treasury securities	$	999	$	—	$	(62)	$	936
Obligations of state and political subdivisions (municipal securities)	1,732,351		1,994		(182,697)		1,551,647
Residential mortgage-related securities:
FNMA/FHLMC	961,231		31,301		(175,760)		816,771
GNMA	52,979		85		(3,436)		49,628
Private-label	364,728		11,697		(72,920)		303,505
Commercial mortgage-related securities:
FNMA/FHLMC	778,796		15,324		(178,281)		615,839
GNMA	69,369		577		(7,254)		62,691
Total HTM investment securities	$	3,960,451	$	60,978	$	(620,411)	$	3,401,018

Amortized cost and fair values of investment securities by contractual maturity

The expected maturities of AFS and HTM securities at September 30, 2023, are shown below:

	AFS					HTM
($ in thousands)	Amortized Cost		Fair Value			Amortized Cost		Fair Value
Due in one year or less	$	7,436	$	7,368		$	16,715	$	16,673
Due after one year through five years	190,843		170,918			47,774		46,115
Due after five years through ten years	136,473		125,923			155,329		144,145
Due after ten years	34,611		31,636			1,481,344		1,214,531
Total debt securities	369,363		335,846			1,701,161		1,421,464
Residential mortgage-related securities:
FNMA/FHLMC	1,678,641		1,436,759			956,107		763,567
GNMA	1,416,569		1,384,670			50,489		45,312
Private-label	—		—			349,410		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	18,779		16,154			782,291		589,097
GNMA	188,667		176,474			61,025		51,940
Asset backed securities:
FFELP	140,881		138,514			—		—
SBA	3,299		3,261			—		—
Total investment securities	$	3,816,198	$	3,491,679		$	3,900,483	$	3,145,898
Ratio of fair value to amortized cost			91.5		%			80.7		%

Debt Securities, Held-to-maturity, Credit Quality Indicator

The following table summarizes the credit quality indicators of HTM securities at amortized cost at September 30, 2023:

($ in thousands)	AAA		AA		A		Not Rated		Total
U.S. Treasury securities	$	999	$	—	$	—	$	—	$	999
Obligations of state and political subdivisions (municipal securities)	769,052		923,707		6,248		1,156		1,700,162
Residential mortgage-related securities:
FNMA/FHLMC	956,107		—		—		—		956,107
GNMA	50,489		—		—		—		50,489
Private-label	349,410		—		—		—		349,410
Commercial mortgage-related securities:
FNMA/FHLMC	782,291		—		—		—		782,291
GNMA	61,025		—		—		—		61,025
Total HTM securities	$	2,969,372	$	923,707	$	6,248	$	1,156	$	3,900,483

The following table summarizes the credit quality indicators of HTM securities at amortized cost at December 31, 2022:

($ in thousands)	AAA		AA		A		Not Rated		Total
U.S. Treasury securities	$	999	$	—	$	—	$	—	$	999
Obligations of state and political subdivisions (municipal securities)	806,529		917,059		7,604		1,158		1,732,351
Residential mortgage-related securities:
FNMA/FHLMC	961,231		—		—		—		961,231
GNMA	52,979		—		—		—		52,979
Private-label	364,728		—		—		—		364,728
Commercial mortgage-related securities:
FNMA/FHLMC	778,796		—		—		—		778,796
GNMA	69,369		—		—		—		69,369
Total HTM securities	$	3,034,630	$	917,059	$	7,604	$	1,158	$	3,960,451

Realized gains and losses and proceeds from sale

The following table summarizes gross realized gains and losses on AFS securities, net write-up of equity securities, and proceeds from the sale of AFS investment securities for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Gross realized gains on AFS securities	$	—	$	—	$	—	$	21
Gross realized (losses) on AFS securities	—		—		—		(8)
Gain on sale and net write-up (down) of equity securities	(11)		5,664		55		5,664
Investment securities gains (losses), net	$	(11)	$	5,664	$	55	$	5,676
Proceeds from sales of AFS investment securities	$	—	$	—	$	—	$	1,061

During the third quarter of 2022, the Corporation sold its Visa Class B restricted shares obtained in the acquisition of First Staunton, which were carried at a zero-cost basis. The remaining shares, which are carried at fair value, were subsequently written up to reflect the new observable price resulting from that sale.

Unrealized losses and fair value of available for sale and held to maturity securities, by investment category and time length

The following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position, at September 30, 2023:

	Less than 12 months					12 months or more					Total
($ in thousands)	Number of Securities	Unrealized (Losses)		Fair Value		Number of Securities	Unrealized (Losses)		Fair Value		Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	—	$	—	$	—	7	$	(15,531)	$	109,024	$	(15,531)	$	109,024
Agency securities	—	—		—		1	(1,410)		13,590		(1,410)		13,590
Obligations of state and political subdivisions (municipal securities)	229	(6,575)		108,953		182	(9,916)		100,413		(16,492)		209,367
Residential mortgage-related securities:
FNMA/FHLMC	20	(1,390)		24,258		107	(240,606)		1,394,562		(241,997)		1,418,820
GNMA	75	(27,131)		1,271,478		17	(4,767)		61,087		(31,898)		1,332,565
Commercial mortgage-related securities:
FNMA/FHLMC	—	—		—		1	(2,625)		16,154		(2,625)		16,154
GNMA	9	(5,848)		100,659		33	(6,345)		75,815		(12,193)		176,474
Asset backed securities:
FFELP	—	—		—		14	(2,450)		129,503		(2,450)		129,503
SBA	2	(1)		620		7	(46)		1,525		(46)		2,144
Other debt securities	1	(21)		979		2	(63)		1,937		(85)		2,915
Total	336	$	(40,967)	$	1,506,947	371	$	(283,760)	$	1,903,609	$	(324,727)	$	3,410,556
HTM investment securities
U.S. Treasury securities	—	$	—	$	—	1	$	(51)	$	948	$	(51)	$	948
Obligations of state and political subdivisions (municipal securities)	586	(48,660)		663,360		567	(230,998)		743,274		(279,659)		1,406,634
Residential mortgage-related securities:
FNMA/FHLMC	31	(2,239)		37,996		92	(218,338)		725,539		(220,577)		763,535
GNMA	8	(466)		11,058		78	(4,726)		34,253		(5,192)		45,312
Private-label	—	—		—		18	(85,120)		274,518		(85,120)		274,518
Commercial mortgage-related securities:
FNMA/FHLMC	2	(2,746)		24,130		43	(203,776)		564,968		(206,522)		589,097
GNMA	—	—		—		13	(9,506)		51,940		(9,506)		51,940
Total	627	$	(54,112)	$	736,544	812	$	(752,515)	$	2,395,440	$	(806,627)	$	3,131,984

For comparative purposes, the following represents gross unrealized losses and the related fair value of AFS and HTM securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2022:

	Less than 12 months					12 months or more					Total
($ in thousands)	Number of Securities	Unrealized (Losses)		Fair Value		Number of Securities	Unrealized (Losses)		Fair Value		Unrealized (Losses)		Fair Value
AFS investment securities
U.S. Treasury securities	—	$	—	$	—	7	$	(15,063)	$	109,378	$	(15,063)	$	109,378
Agency securities	—	—		—		1	(1,468)		13,532		(1,468)		13,532
Obligations of state and political subdivisions (municipal securities)	358	(5,066)		201,260		4	(8)		1,916		(5,074)		203,176
Residential mortgage-related securities:
FNMA/FHLMC	24	(31,266)		260,986		84	(185,170)		1,321,420		(216,436)		1,582,406
GNMA	23	(4,415)		220,276		2	(840)		11,096		(5,255)		231,372
Commercial mortgage-related securities:
FNMA/FHLMC	1	(1,896)		17,142		—	—		—		(1,896)		17,142
GNMA	33	(3,920)		101,036		4	(649)		9,426		(4,569)		110,462
Asset backed securities:
FFELP	3	(1,668)		44,304		12	(4,278)		106,887		(5,947)		151,191
SBA	2	(1)		417		6	(50)		2,057		(51)		2,474
Other debt securities	2	(30)		1,970		1	(49)		951		(78)		2,922
Total	446	$	(48,263)	$	847,391	121	$	(207,575)	$	1,576,665	$	(255,837)	$	2,424,055
HTM investment securities
U.S. Treasury securities	1	$	(62)	$	936	—	$	—	$	—	$	(62)	$	936
Obligations of state and political subdivisions (municipal securities)	771	(96,282)		1,079,216		156	(86,415)		231,022		(182,697)		1,310,238
Residential mortgage-related securities:
FNMA/FHLMC	79	(18,925)		143,201		22	(156,836)		671,570		(175,760)		814,770
GNMA	81	(3,436)		44,476		—	—		—		(3,436)		44,476
Private-label	3	(9,509)		58,733		15	(63,411)		244,772		(72,920)		303,505
Commercial mortgage-related securities:
FNMA/FHLMC	4	(3,814)		20,338		39	(174,467)		576,911		(178,281)		597,249
GNMA	8	(2,528)		34,612		6	(4,726)		28,080		(7,254)		62,691
Total	947	$	(134,556)	$	1,381,511	238	$	(485,855)	$	1,752,354	$	(620,411)	$	3,133,865

XML

Loans Loans (Tables)

9 Months Ended

Sep. 30, 2023

Sep. 30, 2022

Receivables [Abstract]

Loan composition

The period end loan composition was as follows:

($ in thousands)	Sep 30, 2023		Dec 31, 2022
Commercial and industrial	$	10,099,068	$	9,759,454
Commercial real estate — owner occupied	1,054,969		991,722
Commercial and business lending	11,154,037		10,751,176
Commercial real estate — investor	5,218,980		5,080,344
Real estate construction	2,130,719		2,155,222
Commercial real estate lending	7,349,699		7,235,565
Total commercial	18,503,736		17,986,742
Residential mortgage	8,782,645		8,511,550
Auto finance	2,007,164		1,382,073
Home equity	623,650		624,353
Other consumer	275,993		294,851
Total consumer	11,689,451		10,812,828
Total loans	$	30,193,187	$	28,799,569

Loans, Credit Quality Indicator by Vintage Year

The following table presents loans by credit quality indicator by origination year at September 30, 2023:

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		YTD 2023		2022		2021		2020		2019		Prior		Total
Commercial and industrial:
Risk rating:
Pass	$	477	$	2,065,717	$	1,775,767	$	2,516,155	$	1,427,787	$	549,748	$	481,866	$	895,313	$	9,712,353
Special mention	39		26,400		39		39,694		8,731		3,667		—		26,136		104,666
Potential problem	829		72,533		311		51,502		57,611		20,222		4,434		623		207,237
Nonaccrual	14,756		—		13,945		20,299		18,898		21,617		—		53		74,812
Commercial and industrial	$	16,101	$	2,164,649	$	1,790,062	$	2,627,650	$	1,513,027	$	595,254	$	486,300	$	922,126	$	10,099,068
Commercial real estate - owner occupied:
Risk rating:
Pass	$	—	$	17,557	$	133,133	$	182,517	$	196,057	$	104,786	$	142,602	$	229,321	$	1,005,973
Special mention	—		421		—		2,000		7,666		2,446		4,737		—		17,269
Potential problem	—		—		748		1,177		3,334		1,205		1,807		19,520		27,792
Nonaccrual	—		—		—		1,568		2,260		—		—		108		3,936
Commercial real estate - owner occupied	$	—	$	17,978	$	133,882	$	187,262	$	209,317	$	108,436	$	149,146	$	248,950	$	1,054,969
Commercial and business lending:
Risk rating:
Pass	$	477	$	2,083,273	$	1,908,900	$	2,698,672	$	1,623,845	$	654,533	$	624,468	$	1,124,635	$	10,718,325
Special mention	39		26,821		39		41,694		16,396		6,112		4,737		26,136		121,935
Potential problem	829		72,533		1,060		52,679		60,945		21,427		6,242		20,143		235,029
Nonaccrual	14,756		—		13,945		21,868		21,158		21,617		—		161		78,748
Commercial and business lending	$	16,101	$	2,182,627	$	1,923,943	$	2,814,912	$	1,722,344	$	703,689	$	635,446	$	1,171,075	$	11,154,037
Commercial real estate - investor:
Risk rating:
Pass	$	—	$	157,976	$	500,154	$	1,278,072	$	1,181,060	$	687,373	$	459,677	$	634,704	$	4,899,015
Special mention	—		—		9,400		54,103		26,330		—		64,801		5,608		160,243
Potential problem	—		—		6,425		5,842		4,771		69,079		10,903		51,820		148,840
Nonaccrual	—		—		—		—		—		—		—		10,882		10,882
Commercial real estate - investor	$	—	$	157,976	$	515,979	$	1,338,016	$	1,212,162	$	756,452	$	535,381	$	703,014	$	5,218,980
Real estate construction:
Risk rating:
Pass	$	—	$	27,872	$	251,100	$	1,008,428	$	716,123	$	91,982	$	11,970	$	23,141	$	2,130,617
Nonaccrual	—		—		—		—		—		—		—		103		103
Real estate construction	$	—	$	27,872	$	251,100	$	1,008,428	$	716,123	$	91,982	$	11,970	$	23,244	$	2,130,719
Commercial real estate lending:
Risk rating:
Pass	$	—	$	185,848	$	751,254	$	2,286,500	$	1,897,183	$	779,355	$	471,646	$	657,845	$	7,029,632
Special mention	—		—		9,400		54,103		26,330		—		64,801		5,608		160,243
Potential problem	—		—		6,425		5,842		4,771		69,079		10,903		51,820		148,840
Nonaccrual	—		—		—		—		—		—		—		10,985		10,985
Commercial real estate lending	$	—	$	185,848	$	767,080	$	2,346,445	$	1,928,284	$	848,434	$	547,351	$	726,258	$	7,349,699
Total commercial:
Risk rating:
Pass	$	477	$	2,269,121	$	2,660,154	$	4,985,172	$	3,521,028	$	1,433,889	$	1,096,114	$	1,782,480	$	17,747,957
Special mention	39		26,821		9,439		95,797		42,727		6,112		69,538		31,744		282,178
Potential problem	829		72,533		7,485		58,521		65,716		90,506		17,144		71,963		383,869
Nonaccrual	14,756		—		13,945		21,868		21,158		21,617		—		11,146		89,732
Total commercial	$	16,101	$	2,368,474	$	2,691,023	$	5,161,357	$	3,650,628	$	1,552,123	$	1,182,797	$	1,897,334	$	18,503,736

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		YTD 2023		2022		2021		2020		2019		Prior		Total
Residential mortgage:
Risk rating:
Pass	$	—	$	—	$	294,499	$	1,725,855	$	2,176,722	$	1,585,071	$	757,087	$	2,176,012	$	8,715,245
Potential problem	—		—		—		80		—		77		347		744		1,247
Nonaccrual	—		—		142		3,098		7,003		7,506		6,742		41,662		66,153
Residential mortgage	$	—	$	—	$	294,640	$	1,729,032	$	2,183,725	$	1,592,654	$	764,176	$	2,218,418	$	8,782,645
Auto finance:
Risk rating:
Pass	$	—	$	—	$	885,528	$	1,031,283	$	82,447	$	204	$	614	$	202	$	2,000,278
Special mention	—		—		601		1,436		316		—		—		—		2,353
Nonaccrual	—		—		452		3,551		527		—		4		—		4,533
Auto finance	$	—	$	—	$	886,581	$	1,036,271	$	83,289	$	204	$	617	$	202	$	2,007,164
Home equity:
Risk rating:
Pass	$	7,318	$	514,431	$	4,986	$	35,751	$	1,671	$	1,450	$	4,703	$	51,693	$	614,685
Special mention	343		102		—		40		73		—		55		542		811
Potential problem	11		—		—		—		—		—		45		192		236
Nonaccrual	832		67		—		68		105		99		373		7,205		7,917
Home equity	$	8,504	$	514,599	$	4,986	$	35,859	$	1,849	$	1,549	$	5,175	$	59,631	$	623,650
Other consumer:
Risk rating:
Pass	$	99	$	193,494	$	5,521	$	3,933	$	2,772	$	1,234	$	514	$	67,749	$	275,217
Special mention	17		520		—		—		16		14		2		2		553
Nonaccrual	81		66		11		1		8		73		11		52		222
Other consumer	$	197	$	194,079	$	5,532	$	3,934	$	2,797	$	1,321	$	527	$	67,803	$	275,993
Total consumer:
Risk rating:
Pass	$	7,417	$	707,925	$	1,190,534	$	2,796,822	$	2,263,612	$	1,587,959	$	762,917	$	2,295,656	$	11,605,425
Special mention	360		621		601		1,476		405		14		57		543		3,717
Potential problem	11		—		—		80		—		77		392		935		1,483
Nonaccrual	913		133		604		6,718		7,644		7,679		7,129		48,919		78,826
Total consumer	$	8,701	$	708,679	$	1,191,739	$	2,805,096	$	2,271,661	$	1,595,728	$	770,495	$	2,346,054	$	11,689,451
Total loans:
Risk rating:
Pass	$	7,894	$	2,977,046	$	3,850,688	$	7,781,993	$	5,784,640	$	3,021,848	$	1,859,031	$	4,078,136	$	29,353,382
Special mention	398		27,442		10,039		97,273		43,132		6,126		69,595		32,288		285,895
Potential problem	841		72,533		7,485		58,600		65,716		90,583		17,536		72,899		385,352
Nonaccrual	15,669		133		14,549		28,585		28,801		29,295		7,129		60,065		168,558
Total loans	$	24,802	$	3,077,153	$	3,882,762	$	7,966,452	$	5,922,289	$	3,147,851	$	1,953,292	$	4,243,388	$	30,193,187

(a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination.

The following table presents loans by credit quality indicator by origination year at December 31, 2022:

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		2022		2021		2020		2019		2018		Prior		Total
Commercial and industrial:
Risk rating:
Pass	$	1,423	$	1,938,777	$	3,245,546	$	2,367,008	$	567,833	$	573,120	$	330,642	$	432,906	$	9,455,833
Special mention	—		93,209		3,411		23,607		—		—		19		32,497		152,744
Potential problem	447		24,549		41,400		4,193		21,887		38,169		218		6,133		136,549
Nonaccrual	3,926		—		5,210		—		9,119		—		—		—		14,329
Commercial and industrial	$	5,796	$	2,056,535	$	3,295,567	$	2,394,809	$	598,839	$	611,289	$	330,879	$	471,535	$	9,759,454
Commercial real estate - owner occupied:
Risk rating:
Pass	$	—	$	12,447	$	211,645	$	225,627	$	163,965	$	160,370	$	73,487	$	97,420	$	944,961
Special mention	—		—		—		—		1,136		1,491		9,713		—		12,339
Potential problem	—		1,325		1,238		11,141		5,523		10,769		370		4,055		34,422
Commercial real estate - owner occupied	$	—	$	13,772	$	212,883	$	236,769	$	170,624	$	172,630	$	83,570	$	101,475	$	991,722
Commercial and business lending:
Risk rating:
Pass	$	1,423	$	1,951,224	$	3,457,191	$	2,592,636	$	731,798	$	733,490	$	404,129	$	530,326	$	10,400,794
Special mention	—		93,209		3,411		23,607		1,136		1,491		9,732		32,497		165,083
Potential problem	447		25,874		42,638		15,335		27,410		48,938		589		10,188		170,971
Nonaccrual	3,926		—		5,210		—		9,119		—		—		—		14,329
Commercial and business lending	$	5,796	$	2,070,307	$	3,508,450	$	2,631,578	$	769,463	$	783,919	$	414,449	$	573,010	$	10,751,176
Commercial real estate - investor:
Risk rating:
Pass	$	38,412	$	106,280	$	1,633,094	$	1,419,000	$	683,121	$	530,444	$	262,858	$	210,299	$	4,845,096
Special mention	—		—		61,968		24,149		7,361		9,400		—		10,455		113,333
Potential problem	—		—		16,147		21,303		27,635		1,333		19,017		7,099		92,535
Nonaccrual	—		—		2,177		25,668		—		—		—		1,535		29,380
Commercial real estate - investor	$	38,412	$	106,280	$	1,713,387	$	1,490,120	$	718,117	$	541,177	$	281,875	$	229,387	$	5,080,344
Real estate construction:
Risk rating:
Pass	$	—	$	29,892	$	900,593	$	913,107	$	241,230	$	12,062	$	2,226	$	9,775	$	2,108,885
Special mention	—		—		—		—		12,174		33,087		—		—		45,261
Potential problem	—		—		—		—		970		—		—		—		970
Nonaccrual	—		—		—		—		—		—		—		105		105
Real estate construction	$	—	$	29,892	$	900,593	$	913,107	$	254,374	$	45,149	$	2,226	$	9,880	$	2,155,222
Commercial real estate lending:
Risk rating:
Pass	$	38,412	$	136,173	$	2,533,687	$	2,332,107	$	924,351	$	542,505	$	265,083	$	220,073	$	6,953,981
Special mention	—		—		61,968		24,149		19,535		42,487		—		10,455		158,595
Potential problem	—		—		16,147		21,303		28,605		1,333		19,017		7,099		93,505
Nonaccrual	—		—		2,177		25,668		—		—		—		1,640		29,485
Commercial real estate lending	$	38,412	$	136,173	$	2,613,980	$	2,403,227	$	972,492	$	586,326	$	284,101	$	239,267	$	7,235,565

					Term Loans Amortized Cost Basis by Origination Year(a)
($ in thousands)	Rev Loans Converted to Term(a)		Rev Loans Amortized Cost Basis		2022		2021		2020		2019		2018		Prior		Total
Total commercial:
Risk rating:
Pass	$	39,835	$	2,087,396	$	5,990,879	$	4,924,743	$	1,656,149	$	1,275,996	$	669,213	$	750,399	$	17,354,774
Special mention	—		93,209		65,379		47,756		20,671		43,978		9,732		42,952		323,677
Potential problem	447		25,874		58,785		36,638		56,016		50,271		19,606		17,287		264,476
Nonaccrual	3,926		—		7,387		25,668		9,119		—		—		1,640		43,814
Total commercial	$	44,208	$	2,206,480	$	6,122,430	$	5,034,805	$	1,741,955	$	1,370,245	$	698,550	$	812,278	$	17,986,742
Residential mortgage:
Risk rating:
Pass	$	—	$	—	$	1,410,566	$	2,184,125	$	1,716,663	$	817,164	$	370,724	$	1,951,406	$	8,450,648
Special mention	—		—		—		284		96		—		—		63		444
Potential problem	—		—		455		71		—		738		29		685		1,978
Nonaccrual	—		—		8,506		3,851		6,219		3,744		5,014		31,145		58,480
Residential mortgage	$	—	$	—	$	1,419,527	$	2,188,332	$	1,722,979	$	821,645	$	375,768	$	1,983,299	$	8,511,550
Auto finance:
Risk rating:
Pass	$	—	$	—	$	1,271,205	$	106,102	$	333	$	1,267	$	446	$	61	$	1,379,414
Special mention	—		—		1,052		118		—		—		—		—		1,170
Nonaccrual	—		—		1,149		331		—		9		—		—		1,490
Auto finance	$	—	$	—	$	1,273,406	$	106,551	$	333	$	1,276	$	446	$	61	$	1,382,073
Home equity:
Risk rating:
Pass	$	7,254	$	508,212	$	31,389	$	6,508	$	2,112	$	6,197	$	6,966	$	54,827	$	616,211
Special mention	47		102		—		—		—		—		47		310		458
Potential problem	—		15		—		—		—		34		2		146		197
Nonaccrual	1,590		—		306		102		131		307		319		6,322		7,487
Home equity	$	8,891	$	508,329	$	31,695	$	6,610	$	2,243	$	6,538	$	7,333	$	61,605	$	624,353
Other consumer:
Risk rating:
Pass	$	64	$	199,942	$	7,429	$	5,256	$	2,468	$	1,238	$	174	$	77,611	$	294,117
Special mention	6		490		11		—		5		5		—		25		537
Nonaccrual	78		56		11		21		10		56		10		34		197
Other consumer	$	147	$	200,488	$	7,452	$	5,276	$	2,482	$	1,300	$	184	$	77,670	$	294,851
Total consumer:
Risk rating:
Pass	$	7,318	$	708,154	$	2,720,589	$	2,301,991	$	1,721,576	$	825,866	$	378,310	$	2,083,904	$	10,740,390
Special mention	52		592		1,063		403		101		5		47		398		2,609
Potential problem	—		15		455		71		—		772		31		831		2,175
Nonaccrual	1,668		56		9,973		4,304		6,360		4,116		5,343		37,501		67,654
Total consumer	$	9,038	$	708,817	$	2,732,080	$	2,306,769	$	1,728,037	$	830,759	$	383,731	$	2,122,635	$	10,812,828
Total loans:
Risk rating:
Pass	$	47,152	$	2,795,551	$	8,711,468	$	7,226,734	$	3,377,725	$	2,101,861	$	1,047,522	$	2,834,303	$	28,095,164
Special mention	52		93,801		66,443		48,159		20,772		43,983		9,778		43,350		326,286
Potential problem	447		25,889		59,240		36,709		56,016		51,043		19,637		18,118		266,651
Nonaccrual	5,595		56		17,360		29,972		15,479		4,116		5,343		39,141		111,467
Total loans	$	53,246	$	2,915,297	$	8,854,510	$	7,341,574	$	3,469,992	$	2,201,004	$	1,082,280	$	2,934,912	$	28,799,569

(a) Revolving loans converted to term loans are those converted during the reporting period and are also reported in their year of origination.

The following table presents gross charge offs by origination year at September 30, 2023:

			Gross Charge Offs by Origination Year
($ in thousands)	Rev Loans Amortized Cost Basis		YTD 2023		2022		2021		2020		2019		Prior		Total
Commercial and industrial	$	2,760	$	401	$	5,695	$	13,264	$	5,900	$	—	$	3,795	$	31,816
Commercial and business lending	2,760		401		5,695		13,264		5,900		—		3,795		31,816
Commercial real estate-investor	—		—		—		—		—		—		242		242
Real estate construction	—		—		—		—		—		—		25		25
Commercial real estate lending	—		—		—		—		—		—		266		266
Total commercial	2,760		401		5,695		13,264		5,900		—		4,062		32,082
Residential mortgage	—		—		128		22		148		7		410		714
Auto finance	—		254		3,355		442		—		5		—		4,056
Home equity	12		—		43		45		—		22		147		269
Other consumer	3,351		—		149		124		29		12		106		3,769
Total consumer	3,363		254		3,674		633		177		45		662		8,809
Total gross charge offs	$	6,124	$	655	$	9,369	$	13,897	$	6,077	$	45	$	4,724	$	40,891

Loans, Past Due Status

The following table presents loans by past due status at September 30, 2023:

	Accruing
($ in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90+ Days Past Due		Nonaccrual(a)(b)		Total
Commercial and industrial	$	10,022,308	$	671	$	835	$	441	$	74,812	$	10,099,068
Commercial real estate - owner occupied	1,049,156		1,877		—		—		3,936		1,054,969
Commercial and business lending	11,071,464		2,548		835		441		78,748		11,154,037
Commercial real estate - investor	5,197,977		10,120		1		—		10,882		5,218,980
Real estate construction	2,130,606		10		—		—		103		2,130,719
Commercial real estate lending	7,328,583		10,130		1		—		10,985		7,349,699
Total commercial	18,400,047		12,678		836		441		89,732		18,503,736
Residential mortgage	8,704,840		11,652		—		—		66,153		8,782,645
Auto finance	1,985,943		14,335		2,353		—		4,533		2,007,164
Home equity	612,045		2,876		811		—		7,917		623,650
Other consumer	272,175		1,255		625		1,715		222		275,993
Total consumer	11,575,003		30,118		3,789		1,715		78,826		11,689,451
Total loans	$	29,975,051	$	42,797	$	4,626	$	2,156	$	168,558	$	30,193,187

(a) Of the total nonaccrual loans, $114 million, or 68%, were current with respect to payment at September 30, 2023.

(b) No interest income was recognized on nonaccrual loans for the three and nine months ended September 30, 2023. In addition, there were $65 million of nonaccrual loans for which there was no related ACLL at September 30, 2023.

The following table presents loans by past due status at December 31, 2022:

	Accruing
($ in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90+ Days  Past Due		Nonaccrual(a)(b)		Total
Commercial and industrial	$	9,738,561	$	716	$	5,566	$	282	$	14,329	$	9,759,454
Commercial real estate - owner occupied	991,493		218		12		—		—		991,722
Commercial and business lending	10,730,053		934		5,578		282		14,329		10,751,176
Commercial real estate - investor	5,049,897		1,067		—		—		29,380		5,080,344
Real estate construction	2,155,077		39		—		—		105		2,155,222
Commercial real estate lending	7,204,975		1,105		—		—		29,485		7,235,565
Total commercial	17,935,028		2,040		5,578		282		43,814		17,986,742
Residential mortgage	8,443,072		9,811		63		124		58,480		8,511,550
Auto finance	1,371,176		8,238		1,170		—		1,490		1,382,073
Home equity	611,259		5,149		458		—		7,487		624,353
Other consumer	291,722		1,018		592		1,322		197		294,851
Total consumer	10,717,229		24,216		2,283		1,446		67,654		10,812,828
Total loans	$	28,652,257	$	26,256	$	7,861	$	1,728	$	111,467	$	28,799,569

(a) Of the total nonaccrual loans, $64 million, or 58%, were current with respect to payment at December 31, 2022.

(b) No interest income was recognized on nonaccrual loans for the year ended December 31, 2022. In addition, there were $11 million of nonaccrual loans for which there was no related ACLL at December 31, 2022.

Loans, Modifications

The following tables show the composition of loan modifications made to borrowers experiencing financial difficulty by the loan portfolio and type of concessions granted during the nine months ended September 30, 2023. Each of the types of concessions granted comprised less than 1% of their respective classes of loan portfolios at September 30, 2023.

	Interest Rate Concession
($ in thousands)	Amortized Cost
Commercial and industrial	$	234
Auto	169
Home equity	77
Other consumer	1,243
Total loans modified	$	1,724

	Term Extension
($ in thousands)	Amortized Cost
Residential mortgage	$	208
Home equity	26
Total loans modified	$	234

	Combination - Interest Rate Concession and Term Extension
($ in thousands)	Amortized Cost
Residential mortgage	$	830
Home equity	262
Total loans modified	$	1,092

The following tables summarize, by loan portfolio, the financial effect of the Corporation's loan modifications on the modified loans as of September 30, 2023:

Interest Rate Concession
Loan Type	Financial Effect, Weighted Average Contractual Interest Rate (Decrease) Increase
Commercial and industrial	(18)	%
Auto	(4)	%
Home equity	—	%
Other consumer	(21)	%
Weighted average of total loans modified	(10)	%

Term Extension
Loan Type	Financial Effect, Weighted Average Term Increase(a)
Residential mortgage	26 months
Home equity	78 months
Weighted average of total loans modified	32 months

(a) During the nine months ended September 30, 2023, term extensions changed the weighted average term on modified loans from 297 to 328 months.

Loans, Modifications in Last 12 Months, Performance

The following table depicts the performance of loans that have been modified in the nine months ended September 30, 2023:

	Payment Status (Amortized Cost Basis)
($ in thousands)	Current		30-89 Days Past Due		90+ Days Past Due		Nonaccrual
Commercial and industrial	$	234	$	—	$	—	$	—
Residential mortgage	81		126		—		832
Auto	169		—		—		—
Home equity	236		—		—		130
Other consumer	1,243		—		—		—
Total loans modified	$	1,963	$	126	$	—	$	961

Loans, Modified, Subsequent Default

The following table provides the amortized cost of loan modifications by loan portfolio and type of concession that were modified in the previous nine months and subsequently had a payment default, as of September 30, 2023:

	Amortized Cost of Loan Modifications that Subsequently Defaulted
($ in thousands)	Interest Rate Concession		Term Extension		Combination Interest Rate Reduction and Term Extension
Residential mortgage	$	—	$	208	$	206
Home equity	—		—		18
Total loans modified	$	—	$	208	$	224

Loans, Troubled Debt Restructurings, Performance and Nonaccrual

The following table presents nonaccrual and performing restructured loans by loan portfolio at December 31, 2022:

($ in thousands)	Performing Restructured Loans		Nonaccrual Restructured Loans(a)
Commercial and industrial	$	12,453	$	—
Commercial real estate — owner occupied	316		—
Commercial real estate — investor	128		2,074
Real estate construction	195		9
Residential mortgage	16,829		17,117
Home equity	2,148		927
Other consumer	798		—
Total restructured loans	$	32,868	$	20,127

(a) Nonaccrual restructured loans have been included within nonaccrual loans.

Loans, Troubled Debt Restructuring, Summary

The following table provides the number of loans modified in a TDR by loan portfolio, the recorded investment, and unpaid principal balance for the nine months ended September 30, 2022:

($ in thousands)	Number of Loans	Recorded Investment(a)		Unpaid Principal Balance(b)
Commercial and industrial	2	$	265	$	265
Commercial real estate — investor	1	547		573
Residential mortgage	44	9,641		9,833
Home equity	12	390		412
Total loans modified	59	$	10,844	$	11,083

(a) Represents post-modification outstanding recorded investment.
(b) Represents pre-modification outstanding recorded investment.

Loans, Troubled Debt Restructurings, Subsequent Default

The following table provides the number of loans modified during the previous twelve months which subsequently defaulted during the nine months ended September 30, 2022, and the recorded investment in these restructured loans at the time of default as of September 30, 2022:

	Nine Months Ended September 30, 2022
($ in thousands)	Number of Loans	Recorded Investment
Residential mortgage	4	$	1,178

Loans, Changes in AFLL by Portfolio Segment

The following table presents a summary of the changes in the ACLL by portfolio segment for the nine months ended September 30, 2023:

($ in thousands)	Dec 31, 2022		Charge offs		Recoveries		Net Charge offs		Provision for credit losses		Sep 30, 2023		ACLL / Loans
Allowance for loan losses
Commercial and industrial	$	119,076	$	(31,816)	$	2,322	$	(29,494)	$	34,710	$	124,292
Commercial real estate — owner occupied	9,475		—		8		8		1,976		11,459
Commercial and business lending	128,551		(31,816)		2,329		(29,487)		36,686		135,751
Commercial real estate — investor	54,398		(242)		2,789		2,547		10,520		67,466
Real estate construction	45,589		(25)		42		18		6,128		51,734
Commercial real estate lending	99,986		(266)		2,831		2,565		16,648		119,200
Total commercial	228,538		(32,082)		5,161		(26,921)		53,334		254,951
Residential mortgage	38,298		(714)		357		(358)		2,496		40,437
Auto finance	19,619		(4,056)		783		(3,273)		6,654		23,000
Home equity	14,875		(269)		921		652		(413)		15,114
Other consumer	11,390		(3,769)		744		(3,025)		3,928		12,293
Total consumer	84,182		(8,809)		2,805		(6,004)		12,666		90,844
Total loans	$	312,720	$	(40,891)	$	7,965	$	(32,925)	$	66,000	$	345,795
Allowance for unfunded commitments
Commercial and industrial	$	12,997	$	—	$	—	$	—	$	(2,365)	$	10,632
Commercial real estate — owner occupied	103		—		—		—		15		119
Commercial and business lending	13,101		—		—		—		(2,350)		10,751
Commercial real estate — investor	710		—		—		—		39		749
Real estate construction	20,583		—		—		—		(1,000)		19,583
Commercial real estate lending	21,292		—		—		—		(961)		20,331
Total commercial	34,393		—		—		—		(3,311)		31,082
Home equity	2,699		—		—		—		(17)		2,682
Other consumer	1,683		—		—		—		(672)		1,011
Total consumer	4,382		—		—		—		(689)		3,693
Total loans	$	38,776	$	—	$	—	$	—	$	(4,000)	$	34,776
Allowance for credit losses on loans
Commercial and industrial	$	132,073	$	(31,816)	$	2,322	$	(29,494)	$	32,345	$	134,924	1.34	%
Commercial real estate — owner occupied	9,579		—		8		8		1,991		11,578		1.10	%
Commercial and business lending	141,652		(31,816)		2,329		(29,487)		34,336		146,502		1.31	%
Commercial real estate — investor	55,108		(242)		2,789		2,547		10,560		68,214		1.31	%
Real estate construction	66,171		(25)		42		18		5,128		71,317		3.35	%
Commercial real estate lending	121,279		(266)		2,831		2,565		15,687		139,531		1.90	%
Total commercial	262,931		(32,082)		5,161		(26,921)		50,023		286,033		1.55	%
Residential mortgage	38,298		(714)		357		(358)		2,496		40,437		0.46	%
Auto finance	19,619		(4,056)		783		(3,273)		6,654		23,000		1.15	%
Home equity	17,574		(269)		921		652		(430)		17,797		2.85	%
Other consumer	13,073		(3,769)		744		(3,025)		3,256		13,304		4.82	%
Total consumer	88,565		(8,809)		2,805		(6,004)		11,977		94,538		0.81	%
Total loans	$	351,496	$	(40,891)	$	7,965	$	(32,925)	$	62,000	$	380,571	1.26	%

The following table presents a summary of the changes in the ACLL by portfolio segment for the year ended December 31, 2022:

($ in thousands)	Dec 31, 2021		Charge offs		Recoveries		Net Charge offs		Provision for credit losses		Dec 31, 2022		ACLL / Loans
Allowance for loan losses
Commercial and industrial	$	89,857	$	(4,491)	$	5,282	$	791	$	28,428	$	119,076
Commercial real estate — owner occupied	11,473		—		13		13		(2,011)		9,475
Commercial and business lending	101,330		(4,491)		5,295		804		26,418		128,551
Commercial real estate — investor	72,803		(50)		50		—		(18,405)		54,398
Real estate construction	37,643		(48)		106		58		7,887		45,589
Commercial real estate lending	110,446		(98)		156		58		(10,518)		99,986
Total commercial	211,776		(4,588)		5,451		862		15,900		228,538
Residential mortgage	40,787		(567)		908		341		(2,830)		38,298
Auto finance	1,999		(1,041)		98		(943)		18,563		19,619
Home equity	14,011		(587)		1,385		798		66		14,875
Other consumer	11,441		(3,363)		1,010		(2,353)		2,301		11,390
Total consumer	68,239		(5,558)		3,401		(2,157)		18,100		84,182
Total loans	$	280,015	$	(10,146)	$	8,852	$	(1,294)	$	34,000	$	312,720
Allowance for unfunded commitments
Commercial and industrial	$	18,459	$	—	$	—	$	—	$	(5,462)	$	12,997
Commercial real estate — owner occupied	208		—		—		—		(105)		103
Commercial and business lending	18,667		—		—		—		(5,566)		13,101
Commercial real estate — investor	936		—		—		—		(226)		710
Real estate construction	15,586		—		—		—		4,997		20,583
Commercial real estate lending	16,522		—		—		—		4,770		21,292
Total commercial	35,189		—		—		—		(796)		34,393
Home equity	2,592		—		—		—		107		2,699
Other consumer	1,995		—		—		—		(311)		1,683
Total consumer	4,587		—		—		—		(204)		4,382
Total loans	$	39,776	$	—	$	—	$	—	$	(1,000)	$	38,776
Allowance for credit losses on loans
Commercial and industrial	$	108,316	$	(4,491)	$	5,282	$	791	$	22,967	$	132,073	1.35	%
Commercial real estate — owner occupied	11,681		—		13		13		(2,115)		9,579		0.97	%
Commercial and business lending	119,997		(4,491)		5,295		804		20,852		141,652		1.32	%
Commercial real estate — investor	73,739		(50)		50		—		(18,631)		55,108		1.08	%
Real estate construction	53,229		(48)		106		58		12,884		66,171		3.07	%
Commercial real estate lending	126,968		(98)		156		58		(5,748)		121,279		1.68	%
Total commercial	246,965		(4,588)		5,451		862		15,104		262,931		1.46	%
Residential mortgage	40,787		(567)		908		341		(2,830)		38,298		0.45	%
Auto finance	1,999		(1,041)		98		(943)		18,563		19,619		1.42	%
Home equity	16,603		(587)		1,385		798		173		17,574		2.81	%
Other consumer	13,436		(3,363)		1,010		(2,353)		1,990		13,073		4.43	%
Total consumer	72,825		(5,558)		3,401		(2,157)		17,896		88,565		0.82	%
Total loans	$	319,791	$	(10,146)	$	8,852	$	(1,294)	$	33,000	$	351,496	1.22	%

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Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of core deposit intangibles and other intangibles

Changes in the gross carrying amount, accumulated amortization, and net book value for CDIs were as follows:

($ in thousands)	Nine Months Ended September 30, 2023		Year Ended Dec 31, 2022
Core deposit intangibles
Gross carrying amount at the beginning of period	$	88,109	$	88,109
Accumulated amortization	(45,435)		(38,827)
Net book value	$	42,674	$	49,282
Amortization during the period	$	6,608	$	8,811

Summary of changes in balance of mortgage servicing rights asset and mortgage servicing rights valuation allowance

A summary of changes in the balance of the MSRs asset under the fair value measurement method for the nine months ended September 30, 2023 and the year ended December 31, 2022 is as follows:

($ in thousands)	Nine Months Ended September 30, 2023			Year Ended Dec 31, 2022
Mortgage servicing rights
Mortgage servicing rights at beginning of period	$	77,351		$	54,862
Cumulative effect of accounting methodology change	N/A			2,296
Balance at beginning of period, adjusted	$	77,351		$	57,158
Additions	2,477			7,279
Paydowns	(5,354)			(9,350)
Valuation:
Change in fair value model assumptions	8,338			5,715
Changes in fair value of asset	6,320			16,549
Mortgage servicing rights at end of period	$	89,131		$	77,351
Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)	$	6,451,969		$	6,711,820
Mortgage servicing rights to servicing portfolio	1.38		%	1.15		%

Summary of estimated future amortization expense

The following table shows the estimated future amortization expense for CDIs and decay for MSRs:

($ in thousands)	Core Deposit Intangibles		Mortgage Servicing Rights
Three months ended December 31, 2023	$	2,203	$	3,630
2024	8,811		13,789
2025	8,811		12,373
2026	8,811		11,111
2027	8,811		9,768
2028	3,485		8,641
Beyond 2028	1,742		29,819
Total estimated amortization expense and MSRs decay	$	42,674	$	89,131

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Short and Long-Term Funding (Tables)

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Breakdown of short & long-term debt balances

The following table presents the components of short-term funding (funding with original contractual maturities of one year or less), and long-term funding (funding with original contractual maturities greater than one year):

($ in thousands)	Sep 30, 2023		Dec 31, 2022
Short-term funding
Federal funds purchased	$	300,000	$	344,170
Securities sold under agreements to repurchase	151,644		240,969
Federal funds purchased and securities sold under agreements to repurchase	451,644		585,139
Commercial paper	—		20,798
Total short-term funding	$	451,644	$	605,937
Long-term funding
Corporation subordinated notes, at par	$	550,000	$	250,000
Discount and capitalized costs	(8,027)		(544)
Subordinated debt fair value hedge(a)	(12,919)		(1,855)
Finance leases	405		469
Total long-term funding	$	529,459	$	248,071
Total short and long-term funding, excluding FHLB advances	$	981,103	$	854,007
FHLB advances
Short-term FHLB advances	$	2,545,000	$	3,125,000
Long-term FHLB advances	1,209,938		1,209,170
FHLB advances fair value hedge(a)	(21,897)		(14,308)
Total FHLB advances	$	3,733,041	$	4,319,861
Total short and long-term funding	$	4,714,145	$	5,173,869

(a) For additional information on the fair value hedges, see Note 9.

Remaining contractual maturity of securities sold under agreements to repurchase

The remaining contractual maturity of the securities sold under agreements to repurchase on the consolidated balance sheets as of September 30, 2023 and December 31, 2022 are presented in the following table:

	Overnight and Continuous
($ in thousands)	Sep 30, 2023		Dec 31, 2022
Repurchase agreements
Agency mortgage-related securities	$	151,644	$	240,969

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Derivative and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary Of Other Derivative Instruments [Table Text Block]

The following table presents the total notional amounts and gross fair values of the Corporation’s derivatives, as well as the balance sheet netting adjustments as of September 30, 2023 and December 31, 2022. The derivative assets and liabilities are presented on a gross basis prior to the application of bilateral collateral and master netting agreements, but after the variation margin payments with central clearing organizations have been applied as settlement, as applicable. Total derivative assets and liabilities are adjusted to take into consideration the effects of legally enforceable master netting agreements and cash collateral received or paid as of September 30, 2023 and December 31, 2022. The resulting net derivative asset and liability fair values are included in other assets and accrued expenses and other liabilities, respectively, on the consolidated balance sheets.

	Sep 30, 2023								Dec 31, 2022
	Asset				Liability				Asset				Liability
($ in thousands)	Notional Amount		Fair Value		Notional Amount		Fair Value		Notional Amount		Fair Value		Notional Amount		Fair Value
Designated as hedging instruments:
Interest rate-related instruments	$	1,150,000	$	2,109	$	1,700,000	$	21,520	$	900,000	$	4,349	$	1,150,000	$	1,260
Foreign currency exchange forwards	353,217		2,886		70,019		134		261,595		416		167,088		972
Total designated as hedging instruments			4,995				21,654				4,765				2,233
Not designated as hedging instruments:
Interest rate-related and other instruments	3,022,150		140,414		6,320,192		294,062		4,246,823		62,401		4,599,391		251,398
Foreign currency exchange forwards	74,245		1,751		63,309		1,393		68,570		437		34,240		402
Mortgage banking(a)(b)	43,436		1,213		84,000		—		21,265		86		33,000		46
Total not designated as hedging instruments			143,379				295,455				62,925				251,847
Gross derivatives before netting			148,373				317,109				67,690				254,079
Less: Legally enforceable master netting agreements			1,252				1,252				2,788				2,788
Less: Cash collateral pledged/received			88,207				—				26,898				217
Total derivative instruments, after netting			$	58,915			$	315,857			$	38,003			$	251,073

(a) The notional amount of the mortgage derivative asset includes interest rate lock commitments, while the notional amount of the mortgage derivative liability includes forward commitments.
(b) At September 30, 2023, the mortgage derivative asset included approximately $806,000 of forward commitments fair value.

Balance Sheet Recording of Fair Value Hedge [Table Text Block]

The following table presents amounts that were recorded on the consolidated balance sheets related to cumulative basis adjustments for fair value hedges:

	Line Item in the Consolidated Balance Sheets in Which the Hedged Item is Included
	Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)		Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)
($ in thousands)	September 30, 2023				December 31, 2022
Other long-term funding	$	(537,081)	$	12,919	$	(248,145)	$	1,855
FHLB advances	(578,103)		21,897		(585,692)		14,308
Total	$	(1,115,185)	$	34,815	$	(833,837)	$	16,163

(a) Excludes hedged items where only foreign currency risk is the designated hedged risk. At September 30, 2023 and December 31, 2022, the carrying amount excluded for foreign currency denominated loans was $423 million and $429 million, respectively.

Schedule of cash flow hedging instruments, statements of financial performance and financial position location

The tables below identify the effect of fair value and cash flow hedge accounting on the Corporation's consolidated statements of income for the three and nine months ended September 30, 2023 and 2022:

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value and Cash Flow Hedging Relationships
	Three months ended Sep 30,								Nine Months Ended Sep 30,
	2023				2022				2023				2022
($ in thousands)	Interest Income		Interest Expense		Interest Income		Interest Expense		Interest Income		Interest Expense		Interest Income		Interest Expense
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value or cash flow hedges are recorded(a)	$	(4,589)	$	5,195	$	(120)	$	(380)	$	(9,286)	$	12,039	$	(428)	$	(380)
The effects of fair value and cash flow hedging: Impact on fair value hedging relationships in Subtopic 815-20
Interest contracts:
Hedged items	(74)		(9,001)		(120)		(14,703)		(189)		(18,652)		(428)		(14,703)
Derivatives designated as hedging instruments(a)	(4,516)		14,196		—		14,323		(9,097)		30,691		—		14,323

(a) Includes net settlements on the derivatives.

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value Hedging Relationships
	Three months ended Sep 30,				Nine Months Ended Sep 30,
	2023		2022		2023		2022
($ in thousands)	Capital Markets, Net		Capital Markets, Net		Capital Markets, Net		Capital Markets, Net
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value hedges are recorded	$	—	$	—	$	—	$	—
The effects of fair value hedging: Impact on fair value hedging relationships in Subtopic 815-20
Foreign currency contracts:
Hedged items	(11,575)		(29,846)		(2,186)		(40,346)
Derivatives designated as hedging instruments	11,575		29,846		2,186		40,346

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Interest rate-related instruments designated as cash flow hedging instruments
Amount of (loss) recognized in OCI on cash flow hedge derivative(a)	$	(13,592)	$	—	$	(33,976)	$	—
Amount of loss reclassified from accumulated other comprehensive income (loss) into interest income(a)	4,516		—		9,097		—

(a) The entirety of (losses) recognized in OCI as well as the losses reclassified from accumulated other comprehensive income (loss) into interest income were included components in the assessment of hedge effectiveness.

Gain (loss) on derivative instruments not designated as hedging instruments

The table below identifies the effect of derivatives not designated as hedging instruments on the Corporation's consolidated statements of income for the three and nine months ended September 30, 2023 and 2022:

	Consolidated Statements of Income Category of Gain / (Loss)  Recognized in Income	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)		2023		2022		2023		2022
Derivative instruments
Interest rate-related and other instruments — customer and mirror, net	Capital markets, net	$	222	$	(33)	$	359	$	533
Interest rate-related instruments — MSRs hedge	Mortgage banking, net	(5,877)		(3,547)		(5,551)		(12,559)
Foreign currency exchange forwards	Capital markets, net	365		709		1,751		1,442
Interest rate lock commitments (mortgage)	Mortgage banking, net	(24)		(1,389)		321		(3,020)
Forward commitments (mortgage)	Mortgage banking, net	470		3,543		853		3,415

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Balance Sheet Offsetting (Tables)

9 Months Ended

Sep. 30, 2023

Offsetting [Abstract]

Balance sheet offsetting of derivative assets and liabilities

The following table presents the interest rate and foreign exchange assets and liabilities subject to an enforceable master netting arrangement as of September 30, 2023 and December 31, 2022. The interest rate and foreign exchange agreements the Corporation has with its commercial customers are not subject to an enforceable master netting arrangement and are therefore excluded from this table:

	Gross Amounts Recognized		Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets				Net Amounts Presented on the Consolidated Balance Sheets		Gross Amounts Not Offset on the Consolidated Balance Sheets
($ in thousands)			Derivative Liabilities Offset		Cash Collateral Received				Security Collateral Received		Net  Amount
Derivative assets
September 30, 2023	$	140,884	$	(1,252)	$	(88,207)	$	51,425	$	(32,257)	$	19,168
December 31, 2022	63,029		(2,788)		(26,898)		33,342		(30,753)		2,589
	Gross Amounts Recognized		Gross Amounts Subject to Master Netting Arrangements Offset on the Consolidated Balance Sheets				Net Amounts Presented on the Consolidated Balance Sheets		Gross Amounts Not Offset on the Consolidated Balance Sheets
($ in thousands)			Derivative Assets Offset		Cash Collateral Pledged				Security Collateral Pledged		Net  Amount
Derivative liabilities
September 30, 2023	$	22,964	$	(1,252)	$	—	$	21,713	$	—	$	21,713
December 31, 2022	3,096		(2,788)		(217)		91		—		91

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Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Summary of lending-related and other commitments

The following is a summary of lending-related commitments:

($ in thousands)	Sep 30, 2023		Dec 31, 2022
Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale(a)(b)	$	11,228,683	$	12,444,275
Commercial letters of credit(a)	4,067		3,188
Standby letters of credit(c)	246,954		270,692

(a) These off-balance sheet financial instruments are exercisable at the market rate prevailing at the date the underlying transaction will be completed and, thus, are deemed to have no current fair value, or the fair value is based on fees currently charged to enter into similar agreements and was not material at September 30, 2023 or December 31, 2022.

(b) Interest rate lock commitments to originate residential mortgage loans held for sale are considered derivative instruments and are disclosed in Note 9.

(c) Standby letters of credit are presented excluding participations. The Corporation has established a liability of $3 million at both September 30, 2023 and December 31, 2022, as an estimate of the fair value of these financial instruments.

Schedule Of Unfunded Commitments [Table Text Block]

The following table presents a summary of the changes in the allowance for unfunded commitments:

($ in thousands)	Nine Months Ended September 30, 2023		Year Ended December 31, 2022
Allowance for unfunded commitments
Balance at beginning of period	$	38,776	$	39,776
Provision for unfunded commitments	(4,000)		(1,000)
Balance at end of period	$	34,776	$	38,776

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Assets and liabilities measured on recurring basis at fair value

The table below presents the Corporation’s financial instruments measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022, aggregated by the level in the fair value hierarchy within which those measurements fall:

($ in thousands)	Fair Value Hierarchy	Sep 30, 2023		Dec 31, 2022
Assets
AFS investment securities:
U.S. Treasury securities	Level 1	$	109,024	$	109,378
Agency securities	Level 2	13,590		13,532
Obligations of state and political subdivisions (municipal securities)	Level 2	210,317		230,714
Residential mortgage-related securities:
FNMA / FHLMC	Level 2	1,436,759		1,604,610
GNMA	Level 2	1,384,670		497,596
Commercial mortgage-related securities:
FNMA / FHLMC	Level 2	16,154		17,142
GNMA	Level 2	176,474		110,462
Asset backed securities:
FFELP	Level 2	138,514		151,191
SBA	Level 2	3,261		4,477
Other debt securities	Level 2	2,915		2,922
Total AFS investment securities	Level 1	$	109,024	$	109,378
Total AFS investment securities	Level 2	3,382,655		2,632,647
Equity securities with readily determinable fair values	Level 1	6,701		5,991
Residential loans held for sale	Level 2	54,790		20,383
Mortgage servicing rights, net	Level 3	89,131		77,351
Interest rate-related instruments designated as hedging instruments(a)	Level 2	2,109		4,349
Foreign currency exchange forwards designated as hedging instruments(a)	Level 2	2,886		416
Interest rate-related and other instruments not designated as hedging instruments(a)	Level 2	140,414		62,401
Foreign currency exchange forwards not designated as hedging instruments(a)	Level 2	1,751		437
Interest rate lock commitments to originate residential mortgage loans held for sale	Level 3	407		86
Forward commitments to sell residential mortgage loans	Level 3	806		—
Liabilities
Interest rate-related instruments designated as hedging instruments(a)	Level 2	$	21,520	$	1,260
Foreign currency exchange forwards designated as hedging instruments(a)	Level 2	134		972
Interest rate-related and other instruments not designated as hedging instruments(a)	Level 2	294,062		251,398
Foreign currency exchange forwards not designated as hedging instruments(a)	Level 2	1,393		402
Forward commitments to sell residential mortgage loans	Level 3	—		46

(a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the
    same counterparty where there is a legally enforceable master netting agreement in place.

Assets and liabilities measured at fair value using significant unobservable inputs (level 3)

The table below presents a rollforward of the consolidated balance sheets amounts for the nine months ended September 30, 2023 and the year ended December 31, 2022, for the Corporation's mortgage derivatives measured on a recurring basis and classified within Level 3 of the fair value hierarchy:

($ in thousands)	Interest rate lock commitments to originate residential mortgage loans held for sale		Forward commitments to sell residential mortgage loans		Total
Balance December 31, 2021	$	2,617	$	(30)	$	2,647
New production	10,442		(2,028)		12,470
Closed loans / settlements	(913)		24,766		(25,679)
Other	(12,060)		(22,662)		10,603
Change in mortgage derivative	(2,531)		76		(2,607)
Balance December 31, 2022	$	86	$	46	$	40
New production	$	4,681	$	(1,274)	$	5,955
Closed loans / settlements	(2,417)		1,969		(4,386)
Other	(1,943)		(1,547)		(396)
Change in mortgage derivative	321		(853)		1,173
Balance September 30, 2023	$	407	$	(806)	$	1,213

Equity securities without readily determinable fair value

The following table presents the carrying value of equity securities without readily determinable fair values still held as of September 30, 2023 that are measured under the measurement alternative and the related adjustments recorded during the periods presented for those securities with observable price changes. These securities are included in the nonrecurring fair value tables when applicable price changes are observable. Also shown are the cumulative upward and downward adjustments for the Corporation's equity securities without readily determinable fair values as of September 30, 2023:

($ in thousands)
Equity securities without readily determinable fair values
Carrying value as of December 31, 2022	$	19,225
Purchases	10,011
Carrying value as of September 30, 2023	$	29,236
Cumulative upward carrying value changes between January 1, 2018 and September 30, 2023	$	19,134
Cumulative downward carrying value changes/impairment between January 1, 2018 and September 30, 2023	$	—

Assets and liabilities measured on nonrecurring basis at fair value

The table below presents the Corporation’s assets measured at fair value on a nonrecurring basis, aggregated by the level in the fair value hierarchy within which those measurements fall:

($ in thousands)	Fair Value Hierarchy	Fair Value		Consolidated Statements of Income Category of Adjustment Recognized in Income	Adjustment Recognized on the Consolidated Statements of Income(a)
September 30, 2023
Assets
Individually evaluated loans	Level 3	$	56,506	Provision for credit losses	$	28,926
OREO(b)	Level 2	1,315		Other noninterest expense / provision for credit losses(c)	1,124
December 31, 2022
Assets
Individually evaluated loans	Level 3	$	23,584	Provision for credit losses	$	4,405
OREO(b)	Level 2	2,196		Other noninterest expense / provision for credit losses(c)	971
Equity securities without readily determinable fair values	Level 3	19,134		Investment securities gains (losses), net	5,690

(a) Includes the full year impact on the consolidated statements of income.
(b) If the fair value of the collateral exceeds the carrying amount of the asset, no charge off or adjustment is necessary, the asset is not considered to be carried at fair value and is therefore not included in the table.
(c) When a property's value is written down at the time it is transferred to OREO, the charge off is booked to the provision for credit losses. When a property is already in OREO and subsequently written down, the charge off is booked to other noninterest expense.

Schedule of assumptions for fair value as of balance sheet date of assets or liabilities that relate to transferor's continuing involvement

The table below presents the unobservable inputs that are readily quantifiable pertaining to Level 3 measurements:

September 30, 2023	Valuation Technique	Significant Unobservable Input	Range of Inputs			Weighted Average Input Applied
Mortgage servicing rights	Discounted cash flow	Option adjusted spread	6%	-	8%	6%
Mortgage servicing rights	Discounted cash flow	Constant prepayment rate	—%	-	100%	6%
Individually evaluated loans	Appraisals / Discounted cash flow	Collateral / Discount factor	22%	-	36%	34%
Interest rate lock commitments to originate residential mortgage loans held for sale	Discounted cash flow	Closing Ratio	48%	-	100%	84%

Estimated fair values of financial instruments

Fair value estimates are set forth below for the Corporation’s financial instruments:

		Sep 30, 2023				Dec 31, 2022
($ in thousands)	Fair Value Hierarchy Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets
Cash and due from banks	Level 1	$	388,694	$	388,694	$	436,952	$	436,952
Interest-bearing deposits in other financial institutions	Level 1	323,130		323,130		156,693		156,693
Federal funds sold and securities purchased under agreements to resell	Level 1	965		965		27,810		27,810
AFS investment securities	Level 1	109,024		109,024		109,378		109,378
AFS investment securities	Level 2	3,382,655		3,382,655		2,632,647		2,632,647
HTM investment securities, net	Level 1	999		948		999		936
HTM investment securities, net	Level 2	3,899,416		3,144,883		3,959,399		3,400,028
Equity securities with readily determinable fair values	Level 1	6,701		6,701		5,991		5,991
Equity securities without readily determinable fair values	NAV	10,000		10,000		—		—
Equity securities without readily determinable fair values	Level 3	19,236		19,236		19,225		19,225
FHLB and Federal Reserve Bank stocks	Level 2	268,698		268,698		295,496		295,496
Residential loans held for sale	Level 2	54,790		54,790		20,383		20,383
Loans, net	Level 3	29,847,392		28,705,298		28,486,849		27,481,426
Bank and corporate owned life insurance	Level 2	679,775		679,775		676,530		676,530
Mortgage servicing rights, net	Level 3	89,131		89,131		77,351		77,351
Derivatives (other assets)(a)	Level 2	147,160		147,160		67,603		67,603
Interest rate lock commitments to originate residential mortgage loans held for sale (other assets)	Level 3	407		407		86		86
Forward commitments to sell residential mortgage loans (other assets)	Level 3	806		806		—		—
Financial liabilities
Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts	Level 3	$	26,056,389	$	26,056,389	$	27,705,996	$	27,705,996
Brokered CDs and other time deposits(b)	Level 2	6,066,937		6,066,937		1,930,158		1,930,158
Short-term funding	Level 2	451,644		451,624		605,937		605,205
FHLB advances	Level 2	3,733,041		3,734,775		4,319,861		4,322,264
Other long-term funding	Level 2	529,459		519,337		248,071		242,151
Standby letters of credit(c)	Level 2	2,691		2,691		2,881		2,881
Derivatives (accrued expenses and other liabilities)(a)	Level 2	317,109		317,109		254,033		254,033
Forward commitments to sell residential mortgage loans (accrued expenses and other liabilities)	Level 3	—		—		46		46

(a) Figures are presented gross before netting. See Note 9 and Note 10 for information relating to the impact of offsetting derivative assets and liabilities and cash collateral with the
    same counterparty where there is a legally enforceable master netting agreement in place.
(b) When the estimated fair value is less than the carrying value, the carrying value is reported as the fair value.
(c) The commitment on standby letters of credit was $247 million at September 30, 2023 and $271 million at December 31, 2022. See Note 11 for additional information on the standby letters of credit and for information on the fair value of lending-related commitments.

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Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Net period benefit cost for the pension and postretirement plans

The components of net periodic pension cost and net periodic benefit cost for the RAP and Postretirement Plan for the three and nine months ended September 30, 2023 and 2022 were as follows:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
RAP
Service cost	$	800	$	906	$	2,392	$	2,752
Interest cost	2,794		1,820		8,165		5,364
Expected return on plan assets	(8,243)		(6,706)		(24,647)		(20,177)
Amortization of prior service cost	(63)		(63)		(188)		(188)
Amortization of actuarial loss	—		347		37		494
Total net periodic pension cost	$	(4,713)	$	(3,696)	$	(14,241)	$	(11,754)
Postretirement Plan
Interest cost	$	20	$	13	$	59	$	40
Amortization of prior service cost	(19)		(19)		(56)		(56)
Amortization of actuarial (gain)	(7)		—		(22)		—
Total net periodic benefit cost	$	(6)	$	(6)	$	(19)	$	(17)

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Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2023

Segment Reporting [Abstract]

Selected segment information

Information about the Corporation’s segments is presented below:

	Corporate and Commercial Specialty
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income	$	250,365	$	161,143	$	710,031	$	363,135
Net intersegment interest (expense)	(106,675)		(40,117)		(288,366)		(36,893)
Segment net interest income	143,690		121,026		421,665		326,242
Noninterest income	34,081		35,663		99,243		112,620
Total revenue	177,771		156,688		520,908		438,862
Provision for credit losses	14,066		11,904		41,523		36,803
Noninterest expense	63,207		58,934		186,351		172,141
Income before income taxes	100,498		85,851		293,034		229,918
Income tax expense	19,304		15,967		54,138		42,248
Net income	$	81,194	$	69,884	$	238,897	$	187,670
Allocated goodwill					$	525,836	$	525,836

	Community, Consumer, and Business
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income	$	67,139	$	87,156	$	219,883	$	233,699
Net intersegment interest income	123,900		49,437		317,820		98,907
Segment net interest income	191,039		136,593		537,703		332,606
Noninterest income	29,675		26,745		85,881		92,072
Total revenue	220,714		163,338		623,584		424,679
Provision for credit losses	7,381		5,378		21,467		14,958
Noninterest expense	108,185		107,860		328,960		311,423
Income before income taxes	105,148		50,100		273,158		98,298
Income tax expense	22,187		10,521		57,469		20,642
Net income	$	82,961	$	39,579	$	215,688	$	77,655
Allocated goodwill					$	579,156	$	579,156

	Risk Management and Shared Services
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income (loss)	$	(63,260)	$	16,140	$	(143,743)	$	71,498
Net intersegment (expense)	(17,225)		(9,320)		(29,454)		(62,014)
Segment net interest income (loss)	(80,485)		6,820		(173,197)		9,484
Noninterest income	2,823		8,381		9,071		16,021
Total revenue	(77,663)		15,201		(164,126)		25,505
Provision for credit losses	496		(283)		(975)		(38,756)
Noninterest expense	24,814		28,997		58,980		66,940
(Loss) before income taxes	(102,972)		(13,513)		(222,131)		(2,679)
Income tax expense (benefit)	(22,065)		(325)		(41,308)		5,286
Net (loss)	$	(80,907)	$	(13,189)	$	(180,823)	$	(7,965)
Allocated goodwill					$	—	$	—

	Consolidated Total
	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Net interest income	$	254,244	$	264,439	$	786,171	$	668,332
Net intersegment interest income	—		—		—		—
Segment net interest income	254,244		264,439		786,171		668,332
Noninterest income	66,579		70,788		194,195		220,713
Total revenue	320,823		335,227		980,366		889,045
Provision for credit losses	21,943		16,998		62,014		13,006
Noninterest expense	196,205		195,791		574,291		550,503
Income before income taxes	102,674		122,438		344,061		325,536
Income tax expense	19,426		26,163		70,299		68,176
Net income	$	83,248	$	96,275	$	273,762	$	257,360
Allocated goodwill					$	1,104,992	$	1,104,992

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Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2023

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Summary of activity in accumulated other comprehensive income (loss)

The following tables summarize the components of accumulated other comprehensive income (loss) at September 30, 2023 and 2022, including changes during the preceding three and nine month periods as well as any reclassifications out of accumulated other comprehensive income (loss):

($ in thousands)	AFS Investment Securities		Cash Flow Hedge Derivatives		Defined Benefit Pension and Postretirement Obligations		Accumulated Other Comprehensive Income (Loss)
Balance December 31, 2022	$	(233,192)	$	3,360	$	(42,968)	$	(272,799)
Other comprehensive (loss) before reclassifications	(69,512)		—		—		(69,512)
Amounts reclassified from accumulated other comprehensive income (loss):
HTM investment securities, net, at amortized cost	6,883		—		—		6,883
Other assets / accrued expenses and other liabilities	—		(33,976)		—		(33,976)
Interest income	—		9,097		—		9,097
Personnel expense	—		—		(244)		(244)
Other expense	—		—		15		15
Income tax benefit	15,879		5,488		31		21,398
Net other comprehensive loss during period	(46,751)		(19,391)		(198)		(66,340)
Balance September 30, 2023	$	(279,943)	$	(16,032)	$	(43,166)	$	(339,140)
Balance December 31, 2021	$	(5,266)	$	—	$	(5,051)	$	(10,317)
Other comprehensive (loss) before reclassifications	(268,413)		—		—		(268,413)
Unrealized (losses) on AFS securities transferred to HTM securities	(67,604)		—		—		(67,604)
Amounts reclassified from accumulated other comprehensive income (loss):
Investment securities (gains), net	(12)		—		—		(12)
HTM investment securities, net, at amortized cost	7,269		—		—		7,269
Personnel expense	—		—		(244)		(244)
Other expense	—		—		494		494
Income tax (expense) benefit	83,906		—		(470)		83,436
Net other comprehensive (loss) during period	(244,854)		—		(221)		(245,074)
Balance September 30, 2022	$	(250,120)	$	—	$	(5,272)	$	(255,391)

($ in thousands)	AFS Investment Securities		Cash Flow Hedge Derivatives		Defined Benefit Pension and Postretirement Obligations		Accumulated Other Comprehensive Income (Loss)
Balance June 30, 2023	$	(239,273)	$	(9,270)	$	(43,099)	$	(291,642)
Other comprehensive (loss) before reclassifications	(56,924)		—		—		(56,924)
Amounts reclassified from accumulated other comprehensive income (loss):
HTM investment securities, net, at amortized cost	2,327		—		—		2,327
Other assets / accrued expenses and other liabilities	—		(13,592)		—		(13,592)
Interest income	—		4,516		—		4,516
Personnel expense	—		—		(81)		(81)
Other expense	—		—		(7)		(7)
Income tax benefit	13,928		2,315		23		16,266
Net other comprehensive (loss) during period	(40,669)		(6,762)		(66)		(47,497)
Balance September 30, 2023	$	(279,943)	$	(16,032)	$	(43,166)	$	(339,140)
Balance June 30, 2022	$	(177,726)	$	—	$	(5,062)	$	(182,788)
Other comprehensive (loss) before reclassifications	(100,092)		—		—		(100,092)
Amounts reclassified from accumulated other comprehensive income (loss):
HTM investment securities, net, at amortized cost	2,888		—		—		2,888
Personnel expense	—		—		(82)		(82)
Other expense	—		—		347		347
Income tax (expense) benefit	24,810		—		(474)		24,336
Net other comprehensive (loss) during period	(72,394)		—		(209)		(72,603)
Balance September 30, 2022	$	(250,120)	$	—	$	(5,272)	$	(255,391)

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Leases (Tables)

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Lease, Cost and Cash Flows

Operating and finance lease costs and cash flows resulting from these leases are presented below:

	Three Months Ended Sep 30,				Nine Months Ended Sep 30,
($ in thousands)	2023		2022		2023		2022
Operating lease costs	$	1,594	$	1,637	$	4,536	$	5,361
Finance lease costs	23		23		69		96
Operating lease cash flows	1,917		1,880		5,442		6,614
Finance lease cash flows	23		22		69		103

Components of lease expense

The lease classifications on the consolidated balance sheets were as follows:

($ in thousands)	Consolidated Balance Sheets Category	Sep 30, 2023		Dec 31, 2022
Operating lease right-of-use asset	Premises and equipment	$	23,677	$	25,617
Finance lease right-of-use asset	Other assets	390		455
Operating lease liability	Accrued expenses and other liabilities	26,059		28,357
Finance lease liability	Other long-term funding	405		469

Operating lease information

The lease payment obligations, weighted-average remaining lease term, and weighted-average original discount rate were as follows:

	Sep 30, 2023					Dec 31, 2022
($ in thousands)	Lease payments		Weighted-average lease term (in years)	Weighted-average discount rate		Lease payments		Weighted-average lease term (in years)	Weighted-average discount rate
Operating leases
Retail and corporate offices	$	23,662	5.44	2.81	%	$	26,140	5.92	2.62	%
Land	4,255		7.11	3.47	%	4,766		7.59	3.14	%
Equipment	408		2.75	4.62	%	—		0.00	—	%
Total operating leases	$	28,325	5.64	2.93	%	$	30,906	6.17	2.70	%
Finance leases
Retail and corporate offices	$	417	4.50	1.32	%	$	485	5.25	1.32	%
Total finance leases	$	417	4.50	1.32	%	$	485	5.25	1.32	%

Amortization of operating lease liabilities

Contractual lease payment obligations for each of the next five years and thereafter, in addition to a reconciliation to the Corporation’s lease liability, were as follows:

($ in thousands)	Operating Leases		Finance Leases		Total Leases
Three months ended December 31, 2023	$	1,509	$	23	$	1,532
2024	6,124		93		6,217
2025	5,223		93		5,315
2026	4,672		93		4,765
2027	4,014		93		4,107
Beyond 2027	6,782		23		6,805
Total lease payments	$	28,325	$	417	$	28,742
Less: interest	2,266		12		2,278
Present value of lease payments	$	26,059	$	405	$	26,464

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Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 83,248	$ 87,154	$ 103,360	$ 96,275	$ 86,824	$ 74,262	$ 273,762	$ 257,360
Preferred stock dividends	(2,875)			(2,875)			(8,625)	(8,625)
Net income available to common equity	80,373			93,400			265,137	248,735
Common shareholder dividends	(31,806)			(30,149)			(95,417)	(90,647)
Unvested share-based payment awards	(190)			(194)			(588)	(609)
Undistributed earnings	48,377			63,057			169,132	157,479
Undistributed earnings allocated to common shareholders	48,090			62,648			168,136	156,454
Undistributed earnings allocated to unvested share-based payment awards	287			409			996	1,025
Basic
Distributed earnings to common shareholders	31,806			30,149			95,417	90,647
Undistributed earnings allocated to common shareholders	48,090			62,648			168,136	156,454
Total common shareholders earnings, basic	79,896			92,796			263,553	247,102
Diluted
Distributed earnings to common shareholders	31,806			30,149			95,417	90,647
Undistributed earnings allocated to common shareholders	48,090			62,648			168,136	156,454
Total common shareholders earnings, diluted	$ 79,896			$ 92,796			$ 263,553	$ 247,102
Weighted average common shares outstanding	150,035			149,321			149,929	149,063
Effect of dilutive common stock awards	980			942			1,042	1,141
Diluted weighted average common shares outstanding	151,014			150,262			150,971	150,205
Basic earnings per common share	$ 0.53			$ 0.62			$ 1.76	$ 1.66
Diluted earnings per common share	$ 0.53			$ 0.62			$ 1.75	$ 1.65

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Earnings Per Common Share (Details Textuals) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	4,000,000	3,000,000	3,000,000	3,000,000

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Stock-Based Compensation, Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock Options Shares Outstanding, Beginning balance (in shares)	3,994
Exercised	61
Forfeited or expired	10
Stock Options Shares Outstanding, Ending balance (in shares)	3,923	3,994
Options exercisable (in shares)	3,709
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Stock Option Outstanding, Weighted Average Exercise Price, Beginning balance (in usd per share)	$ 21.06
Exercised	17.04
Forfeited	23.45
Stock Option Outstanding, Weighted Average Exercise Price, Ending balance (in usd per share)	21.12	$ 21.06
Options Exercisable, Weighted Average Exercise Price (in usd per share)	$ 21.30
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	4 years 4 months 28 days	5 years 1 month 9 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	4 years 4 months 28 days	5 years 1 month 9 days
Options exercisable, Weighted Average Remaining Contractual Term	4 years 3 months 14 days
Stock Options Outstanding, Aggregate Intrinsic Value, Beginning balance	$ 10,525
Stock Options Outstanding, Aggregate Intrinsic Value, Ending balance	107	$ 10,525
Options exercisable, Aggregate Intrinsic Value	$ 81

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Stock-Based Compensation, Restricted Stock Activity (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding Shares, Beginning balance (in shares) | shares	2,303
Granted | shares	830
Vested | shares	771
Forfeited | shares	35
Outstanding Shares, Ending balance (in shares) | shares	2,327
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding, Weighted Average Grant Date Fair Value, Beginning balance (in usd per share) | $ / shares	$ 20.81
Granted, Weighted Average Grant Date Fair Value | $ / shares	22.47
Vested, Weighted Average Grant Date Fair Value | $ / shares	21.01
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	22.10
Outstanding Weighted Average Grant Date Fair Value, Ending balance (in usd per share) | $ / shares	$ 21.32

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Stock-Based Compensation (Details Textuals) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award
Intrinsic value of stock options exercised	$ 272	$ 3,000
Total fair value of vested stock options	$ 955	2,000
Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	150.00%
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Recognized compensation expense for vesting	$ 265	587
Unvested share-based payment awards	113
Share-based Payment Arrangement, Expense	$ 265	$ 587
Performance-based Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years	3 years
Service-based Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years	4 years
Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award
Recognized compensation expense for vesting	$ 14,000	$ 13,000
Unvested share-based payment awards	23,000
Share-based Payment Arrangement, Expense	14,000	$ 13,000
Share-based Payment Arrangement, Accelerated Cost	$ 3,000
Remaining requisite service periods, extend through	first quarter of 2027

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Investment Securities, AFS and HTM Securities Amortized Costs and Fair Values (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 3,816,198	$ 2,997,032
Debt Securities, Available-for-sale, Unrealized Gain	207	830
Debt Securities, Available-for-sale, Unrealized Loss	(324,727)	(255,837)
AFS investment securities, at fair value	3,491,679	2,742,025
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,900,483	3,960,451
Held-to-maturity, Gross Unrealized Gains	52,043	60,978
Held-to-maturity, Gross Unrealized Loss	(806,627)	(620,411)
Held-to-maturity, Fair Value	3,145,898	3,401,018
US Treasury Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	124,555	124,441
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(15,531)	(15,063)
AFS investment securities, at fair value	109,024	109,378
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	999	999
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Loss	(51)	(62)
Held-to-maturity, Fair Value	948	936
Agency Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	15,000	15,000
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(1,410)	(1,468)
AFS investment securities, at fair value	13,590	13,532
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	226,808	235,693
Debt Securities, Available-for-sale, Unrealized Gain	0	96
Debt Securities, Available-for-sale, Unrealized Loss	(16,492)	(5,074)
AFS investment securities, at fair value	210,317	230,714
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,700,162	1,732,351
Held-to-maturity, Gross Unrealized Gains	12	1,994
Held-to-maturity, Gross Unrealized Loss	(279,659)	(182,697)
Held-to-maturity, Fair Value	1,420,516	1,551,647
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	0
AFS investment securities, at fair value	0
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	349,410	364,728
Held-to-maturity, Gross Unrealized Gains	10,228	11,697
Held-to-maturity, Gross Unrealized Loss	(85,120)	(72,920)
Held-to-maturity, Fair Value	274,518	303,505
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	140,881	157,138
Debt Securities, Available-for-sale, Unrealized Gain	83	0
Debt Securities, Available-for-sale, Unrealized Loss	(2,450)	(5,947)
AFS investment securities, at fair value	138,514	151,191
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0
Held-to-maturity, Fair Value	0
US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,299	4,512
Debt Securities, Available-for-sale, Unrealized Gain	9	15
Debt Securities, Available-for-sale, Unrealized Loss	(46)	(51)
AFS investment securities, at fair value	3,261	4,477
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0
Held-to-maturity, Fair Value	0
Other Debt securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,000	3,000
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(85)	(78)
AFS investment securities, at fair value	2,915	2,922
FNMA/FHLMC | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1,678,641	1,820,642
Debt Securities, Available-for-sale, Unrealized Gain	115	404
Debt Securities, Available-for-sale, Unrealized Loss	(241,997)	(216,436)
AFS investment securities, at fair value	1,436,759	1,604,610
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	956,107	961,231
Held-to-maturity, Gross Unrealized Gains	28,038	31,301
Held-to-maturity, Gross Unrealized Loss	(220,577)	(175,760)
Held-to-maturity, Fair Value	763,567	816,771
FNMA/FHLMC | Commercial mortgage-related securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	18,779	19,038
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(2,625)	(1,896)
AFS investment securities, at fair value	16,154	17,142
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	782,291	778,796
Held-to-maturity, Gross Unrealized Gains	13,329	15,324
Held-to-maturity, Gross Unrealized Loss	(206,522)	(178,281)
Held-to-maturity, Fair Value	589,097	615,839
Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1,416,569	502,537
Debt Securities, Available-for-sale, Unrealized Gain	0	314
Debt Securities, Available-for-sale, Unrealized Loss	(31,898)	(5,255)
AFS investment securities, at fair value	1,384,670	497,596
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	50,489	52,979
Held-to-maturity, Gross Unrealized Gains	15	85
Held-to-maturity, Gross Unrealized Loss	(5,192)	(3,436)
Held-to-maturity, Fair Value	45,312	49,628
Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	188,667	115,031
Debt Securities, Available-for-sale, Unrealized Gain	0	0
Debt Securities, Available-for-sale, Unrealized Loss	(12,193)	(4,569)
AFS investment securities, at fair value	176,474	110,462
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	61,025	69,369
Held-to-maturity, Gross Unrealized Gains	421	577
Held-to-maturity, Gross Unrealized Loss	(9,506)	(7,254)
Held-to-maturity, Fair Value	$ 51,940	$ 62,691

XML

Investment Securities, AFS and HTM Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Amortized Cost
Available for Sale, Due in one year or less	$ 7,436
Available for Sale, Due after one year through five years	190,843
Available for Sale, Due after five years through ten years	136,473
Available for Sale, Due after ten years	34,611
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	369,363
Available for Sale, Total debt securities	3,816,198	$ 2,997,032
Fair Value
Available for Sale, Due in one year or less	7,368
Available for Sale, Due after one year through five years	170,918
Available for Sale, Due after five years through ten years	125,923
Available for Sale, Due after ten years	31,636
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value	335,846
Available for Sale, Total debt securities	$ 3,491,679	2,742,025
Available for Sale, Ratio of Fair Value to Amortized Cost	91.50%
Amortized Cost
Held to Maturity, Due in one year or less	$ 16,715
Held to Maturity, Due after one year through five years	47,774
Held to Maturity, Due after five years through ten years	155,329
Held to Maturity, Due after ten years	1,481,344
Held to Maturity, Total Debt Securities	1,701,161
Held to Maturity, Amortized Cost	3,900,483	3,960,451
Fair Value
Held to Maturity, Due in one year or less	16,673
Held to Maturity, Due after one year through five years	46,115
Held to Maturity, Due after five years through ten years	144,145
Held to Maturity, Due after ten years	1,214,531
Held to Maturity, Securities, Debt Securities	1,421,464
Held to Maturity, Total debt securities at fair value	$ 3,145,898	3,401,018
Held to Maturity, Ratio of Fair Value to Amortized Cost	80.70%
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Amortized Cost
Available for Sale, Total debt securities	$ 0
Fair Value
Available for Sale, Total debt securities	0
Amortized Cost
Held to Maturity, Amortized Cost	349,410	364,728
Fair Value
Held to Maturity, Total debt securities at fair value	274,518	303,505
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Amortized Cost
Available for Sale, Total debt securities	140,881	157,138
Fair Value
Available for Sale, Total debt securities	138,514	151,191
Amortized Cost
Held to Maturity, Amortized Cost	0
Fair Value
Held to Maturity, Total debt securities at fair value	0
US Government-sponsored Enterprises Debt Securities [Member]
Amortized Cost
Available for Sale, Total debt securities	3,299	4,512
Fair Value
Available for Sale, Total debt securities	3,261	4,477
Amortized Cost
Held to Maturity, Amortized Cost	0
Fair Value
Held to Maturity, Total debt securities at fair value	0
FNMA/FHLMC | Residential Related Securities
Amortized Cost
Available for Sale, Total debt securities	1,678,641	1,820,642
Fair Value
Available for Sale, Total debt securities	1,436,759	1,604,610
Amortized Cost
Held to Maturity, Amortized Cost	956,107	961,231
Fair Value
Held to Maturity, Total debt securities at fair value	763,567	816,771
FNMA/FHLMC | Commercial mortgage-related securities
Amortized Cost
Available for Sale, Total debt securities	18,779	19,038
Fair Value
Available for Sale, Total debt securities	16,154	17,142
Amortized Cost
Held to Maturity, Amortized Cost	782,291	778,796
Fair Value
Held to Maturity, Total debt securities at fair value	589,097	615,839
Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
Amortized Cost
Available for Sale, Total debt securities	1,416,569	502,537
Fair Value
Available for Sale, Total debt securities	1,384,670	497,596
Amortized Cost
Held to Maturity, Amortized Cost	50,489	52,979
Fair Value
Held to Maturity, Total debt securities at fair value	45,312	49,628
Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
Amortized Cost
Available for Sale, Total debt securities	188,667	115,031
Fair Value
Available for Sale, Total debt securities	176,474	110,462
Amortized Cost
Held to Maturity, Amortized Cost	61,025	69,369
Fair Value
Held to Maturity, Total debt securities at fair value	$ 51,940	$ 62,691

XML

Investment Securities, HTM Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 3,900,483	$ 3,960,451
US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	999	999
US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,700,162	1,732,351
Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	956,107	961,231
Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	50,489	52,979
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	349,410	364,728
Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	782,291	778,796
Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	61,025	69,369
Not Rated [Domain]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,156	1,158
Not Rated [Domain] | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Not Rated [Domain] | US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	1,156	1,158
Not Rated [Domain] | Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Not Rated [Domain] | Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Not Rated [Domain] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Not Rated [Domain] | Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
Not Rated [Domain] | Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AAA
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	2,969,372	3,034,630
AAA | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	999	999
AAA | US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	769,052	806,529
AAA | Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	956,107	961,231
AAA | Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	50,489	52,979
AAA | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	349,410	364,728
AAA | Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	782,291	778,796
AAA | Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	61,025	69,369
AA
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	923,707	917,059
AA | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	923,707	917,059
AA | Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
AA | Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	6,248	7,604
A | US Treasury Securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	6,248	7,604
A | Residential Related Securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | Commercial mortgage-related securities | FNMA/FHLMC
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	0	0
A | Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	$ 0	$ 0

XML

Investment Securities Gain/Loss Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Gross realized gains on AFS securities	$ 0	$ 0	$ 0	$ 21
Gross realized (losses) on AFS securities	0	0	0	(8)
Gain on sale and net write-up of equity securities	(11)	5,664	55	5,664
Investment securities gains (losses), net	(11)	5,664	55	5,676
Proceeds from sales of AFS investment securities	$ 0	$ 0	$ 0	$ 1,061

XML

Investment Securities, AFS and HTM Securities Gross Unrealized Losses (Details) $ in Thousands	Sep. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	336	446
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (40,967)	$ (48,263)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,506,947	$ 847,391
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	371	121
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (283,760)	$ (207,575)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,903,609	1,576,665
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(324,727)	(255,837)
Debt Securities, Available-for-sale, Unrealized Loss Position	3,410,556	2,424,055
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(54,112)	(134,556)
Fair value of unrealized losses on held to maturity securities, less than 12 months	736,544	1,381,511
Unrealized losses on held to maturity securities, 12 months or more	(752,515)	(485,855)
Fair value of unrealized losses on held to maturity securities, 12 months or more	2,395,440	1,752,354
Total unrealized losses on held to maturity securities	(806,627)	(620,411)
Total fair value of unrealized losses on held to maturity securities	$ 3,131,984	$ 3,133,865
US Treasury Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	7	7
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (15,531)	$ (15,063)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	109,024	109,378
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(15,531)	(15,063)
Debt Securities, Available-for-sale, Unrealized Loss Position	109,024	109,378
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	0	(62)
Fair value of unrealized losses on held to maturity securities, less than 12 months	0	936
Unrealized losses on held to maturity securities, 12 months or more	(51)	0
Fair value of unrealized losses on held to maturity securities, 12 months or more	948	0
Total unrealized losses on held to maturity securities	(51)	(62)
Total fair value of unrealized losses on held to maturity securities	$ 948	$ 936
Agency Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	1	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (1,410)	$ (1,468)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	13,590	13,532
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,410)	(1,468)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 13,590	$ 13,532
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	229	358
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (6,575)	$ (5,066)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 108,953	$ 201,260
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	182	4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (9,916)	$ (8)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	100,413	1,916
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(16,492)	(5,074)
Debt Securities, Available-for-sale, Unrealized Loss Position	209,367	203,176
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(48,660)	(96,282)
Fair value of unrealized losses on held to maturity securities, less than 12 months	663,360	1,079,216
Unrealized losses on held to maturity securities, 12 months or more	(230,998)	(86,415)
Fair value of unrealized losses on held to maturity securities, 12 months or more	743,274	231,022
Total unrealized losses on held to maturity securities	(279,659)	(182,697)
Total fair value of unrealized losses on held to maturity securities	1,406,634	1,310,238
Mortgage-backed Securities, Issued by Private Enterprises [Member]
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	0	(9,509)
Fair value of unrealized losses on held to maturity securities, less than 12 months	0	58,733
Unrealized losses on held to maturity securities, 12 months or more	(85,120)	(63,411)
Fair value of unrealized losses on held to maturity securities, 12 months or more	274,518	244,772
Total unrealized losses on held to maturity securities	(85,120)	(72,920)
Total fair value of unrealized losses on held to maturity securities	$ 274,518	$ 303,505
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	0	3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ (1,668)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 44,304
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	14	12
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (2,450)	$ (4,278)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	129,503	106,887
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,450)	(5,947)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 129,503	$ 151,191
US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	2	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1)	$ (1)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 620	$ 417
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	7	6
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (46)	$ (50)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,525	2,057
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(46)	(51)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 2,144	$ 2,474
Other Debt securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	1	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (21)	$ (30)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 979	$ 1,970
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	2	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (63)	$ (49)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,937	951
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(85)	(78)
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 2,915	$ 2,922
FNMA/FHLMC | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	20	24
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (1,390)	$ (31,266)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 24,258	$ 260,986
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	107	84
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (240,606)	$ (185,170)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,394,562	1,321,420
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(241,997)	(216,436)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,418,820	1,582,406
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(2,239)	(18,925)
Fair value of unrealized losses on held to maturity securities, less than 12 months	37,996	143,201
Unrealized losses on held to maturity securities, 12 months or more	(218,338)	(156,836)
Fair value of unrealized losses on held to maturity securities, 12 months or more	725,539	671,570
Total unrealized losses on held to maturity securities	(220,577)	(175,760)
Total fair value of unrealized losses on held to maturity securities	$ 763,535	$ 814,770
FNMA/FHLMC | Commercial mortgage-related securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	0	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ (1,896)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 17,142
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	1	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (2,625)	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	16,154	0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(2,625)	(1,896)
Debt Securities, Available-for-sale, Unrealized Loss Position	16,154	17,142
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(2,746)	(3,814)
Fair value of unrealized losses on held to maturity securities, less than 12 months	24,130	20,338
Unrealized losses on held to maturity securities, 12 months or more	(203,776)	(174,467)
Fair value of unrealized losses on held to maturity securities, 12 months or more	564,968	576,911
Total unrealized losses on held to maturity securities	(206,522)	(178,281)
Total fair value of unrealized losses on held to maturity securities	$ 589,097	$ 597,249
Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	75	23
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (27,131)	$ (4,415)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,271,478	$ 220,276
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	17	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (4,767)	$ (840)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	61,087	11,096
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(31,898)	(5,255)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,332,565	231,372
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	(466)	(3,436)
Fair value of unrealized losses on held to maturity securities, less than 12 months	11,058	44,476
Unrealized losses on held to maturity securities, 12 months or more	(4,726)	0
Fair value of unrealized losses on held to maturity securities, 12 months or more	34,253	0
Total unrealized losses on held to maturity securities	(5,192)	(3,436)
Total fair value of unrealized losses on held to maturity securities	$ 45,312	$ 44,476
Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	9	33
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ (5,848)	$ (3,920)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 100,659	$ 101,036
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	33	4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ (6,345)	$ (649)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	75,815	9,426
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(12,193)	(4,569)
Debt Securities, Available-for-sale, Unrealized Loss Position	176,474	110,462
HTM investment securities
Unrealized losses on held to maturity securities, less than 12 months	0	(2,528)
Fair value of unrealized losses on held to maturity securities, less than 12 months	0	34,612
Unrealized losses on held to maturity securities, 12 months or more	(9,506)	(4,726)
Fair value of unrealized losses on held to maturity securities, 12 months or more	51,940	28,080
Total unrealized losses on held to maturity securities	(9,506)	(7,254)
Total fair value of unrealized losses on held to maturity securities	$ 51,940	$ 62,691
Held to maturity, number of securities, less than 12 months
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	627	947
Held to maturity, number of securities, less than 12 months | US Treasury Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	0	1
Held to maturity, number of securities, less than 12 months | US States and Political Subdivisions Debt Securities [Member]
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	586	771
Held to maturity, number of securities, less than 12 months | Mortgage-backed Securities, Issued by Private Enterprises [Member]
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	0	3
Held to maturity, number of securities, less than 12 months | FNMA/FHLMC | Residential Related Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	31	79
Held to maturity, number of securities, less than 12 months | FNMA/FHLMC | Commercial mortgage-related securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	2	4
Held to maturity, number of securities, less than 12 months | Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	8	81
Held to maturity, number of securities, less than 12 months | Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	0	8
Held to maturity, number of securities, 12 months or more
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	812	238
Held to maturity, number of securities, 12 months or more | US Treasury Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	1	0
Held to maturity, number of securities, 12 months or more | US States and Political Subdivisions Debt Securities [Member]
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	567	156
Held to maturity, number of securities, 12 months or more | Mortgage-backed Securities, Issued by Private Enterprises [Member]
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	18	15
Held to maturity, number of securities, 12 months or more | FNMA/FHLMC | Residential Related Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	92	22
Held to maturity, number of securities, 12 months or more | FNMA/FHLMC | Commercial mortgage-related securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	43	39
Held to maturity, number of securities, 12 months or more | Government National Mortgage Association (GNMA) [Member] | Residential Related Securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	78	0
Held to maturity, number of securities, 12 months or more | Government National Mortgage Association (GNMA) [Member] | Commercial mortgage-related securities
HTM investment securities
Number of held to maturity securities in a continuous unrealized loss position | security	13	6

XML

Investment Securities (Details Textual) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Investment Securities Information [Line Items]
Proceeds from sales of AFS investment securities	$ 0	$ 0	$ 0	$ 1,061,000
Debt Instrument, Collateral Amount	1,600,000,000		1,600,000,000		$ 2,300,000,000
Interest receivable	171,119,000		171,119,000		144,449,000
Debt Securities, Held-to-maturity, Nonaccrual, Interest Income			0		0
Debt Securities, Held to Maturity, Past Due	0		0		0
Held to maturity allowance for credit loss	(67,000)		(67,000)		(54,000)
Federal Home Loan Bank Stock	182,000,000		182,000,000		209,000,000
Federal Reserve Bank Stock	87,000,000		87,000,000		87,000,000
Equity securities with readily determinable fair values, Fair Value	7,000,000		7,000,000		6,000,000
Equity Securities without Readily Determinable Fair Value, Amount	29,236,000		29,236,000		19,225,000
Held-to-maturity Securities [Member]
Investment Securities Information [Line Items]
Interest receivable	16,000,000		16,000,000		19,000,000
Available-for-sale Securities [Member]
Investment Securities Information [Line Items]
Interest receivable	14,000,000		14,000,000		9,000,000
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]
Investment Securities Information [Line Items]
Interest receivable	3,000,000		3,000,000		3,000,000
Federal Reserve Bank Stock [Member]
Investment Securities Information [Line Items]
Interest receivable	958,000		958,000		0
US Treasury Securities
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0		0		0
US States and Political Subdivisions Debt Securities [Member]
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0		0		0
Agency mortgage-related securities
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	$ 0		$ 0		$ 0

XML

Loans Composition (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 30,193,187	$ 28,799,569
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans	10,099,068	9,759,454
Commercial real estate — owner occupied
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,054,969	991,722
Commercial and business lending
Loans and Leases Receivable Disclosure [Line Items]
Loans	11,154,037	10,751,176
Commercial real estate — investor
Loans and Leases Receivable Disclosure [Line Items]
Loans	5,218,980	5,080,344
Real estate construction
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,130,719	2,155,222
Commercial real estate lending
Loans and Leases Receivable Disclosure [Line Items]
Loans	7,349,699	7,235,565
Total commercial
Loans and Leases Receivable Disclosure [Line Items]
Loans	18,503,736	17,986,742
Residential mortgage
Loans and Leases Receivable Disclosure [Line Items]
Loans	8,782,645	8,511,550
Auto finance
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,007,164	1,382,073
Home equity
Loans and Leases Receivable Disclosure [Line Items]
Loans	623,650	624,353
Other consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	275,993	294,851
Total consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 11,689,451	$ 10,812,828

XML

Loans, Credit Quality Indicator by Vintage Year (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 24,802	$ 53,246
Financing Receivable, Revolving	3,077,153	2,915,297
Financing Receivable, Originated in Current Fiscal Year	3,882,762	8,854,510
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,966,452	7,341,574
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,922,289	3,469,992
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,147,851	2,201,004
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,953,292	1,082,280
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,243,388	2,934,912
Total	30,193,187	28,799,569
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	6,124
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	655
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	9,369
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	13,897
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	6,077
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	45
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	4,724
Charge offs	40,891
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,894	47,152
Financing Receivable, Revolving	2,977,046	2,795,551
Financing Receivable, Originated in Current Fiscal Year	3,850,688	8,711,468
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,781,993	7,226,734
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,784,640	3,377,725
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,021,848	2,101,861
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,859,031	1,047,522
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,078,136	2,834,303
Total	29,353,382	28,095,164
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	398	52
Financing Receivable, Revolving	27,442	93,801
Financing Receivable, Originated in Current Fiscal Year	10,039	66,443
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	97,273	48,159
Financing Receivable, Originated Two Years before Latest Fiscal Year	43,132	20,772
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,126	43,983
Financing Receivable, Originated Four Years before Latest Fiscal Year	69,595	9,778
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32,288	43,350
Total	285,895	326,286
Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	841	447
Financing Receivable, Revolving	72,533	25,889
Financing Receivable, Originated in Current Fiscal Year	7,485	59,240
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	58,600	36,709
Financing Receivable, Originated Two Years before Latest Fiscal Year	65,716	56,016
Financing Receivable, Originated Three Years before Latest Fiscal Year	90,583	51,043
Financing Receivable, Originated Four Years before Latest Fiscal Year	17,536	19,637
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	72,899	18,118
Total	385,352	266,651
Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	15,669	5,595
Financing Receivable, Revolving	133	56
Financing Receivable, Originated in Current Fiscal Year	14,549	17,360
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	28,585	29,972
Financing Receivable, Originated Two Years before Latest Fiscal Year	28,801	15,479
Financing Receivable, Originated Three Years before Latest Fiscal Year	29,295	4,116
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,129	5,343
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	60,065	39,141
Total	168,558	111,467
Total commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	16,101	44,208
Financing Receivable, Revolving	2,368,474	2,206,480
Financing Receivable, Originated in Current Fiscal Year	2,691,023	6,122,430
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,161,357	5,034,805
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,650,628	1,741,955
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,552,123	1,370,245
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,182,797	698,550
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,897,334	812,278
Total	18,503,736	17,986,742
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,760
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	401
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	5,695
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	13,264
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	5,900
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	4,062
Charge offs	32,082
Total commercial | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	477	39,835
Financing Receivable, Revolving	2,269,121	2,087,396
Financing Receivable, Originated in Current Fiscal Year	2,660,154	5,990,879
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,985,172	4,924,743
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,521,028	1,656,149
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,433,889	1,275,996
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,096,114	669,213
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,782,480	750,399
Total	17,747,957	17,354,774
Total commercial | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	39	0
Financing Receivable, Revolving	26,821	93,209
Financing Receivable, Originated in Current Fiscal Year	9,439	65,379
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	95,797	47,756
Financing Receivable, Originated Two Years before Latest Fiscal Year	42,727	20,671
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,112	43,978
Financing Receivable, Originated Four Years before Latest Fiscal Year	69,538	9,732
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	31,744	42,952
Total	282,178	323,677
Total commercial | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	829	447
Financing Receivable, Revolving	72,533	25,874
Financing Receivable, Originated in Current Fiscal Year	7,485	58,785
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	58,521	36,638
Financing Receivable, Originated Two Years before Latest Fiscal Year	65,716	56,016
Financing Receivable, Originated Three Years before Latest Fiscal Year	90,506	50,271
Financing Receivable, Originated Four Years before Latest Fiscal Year	17,144	19,606
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	71,963	17,287
Total	383,869	264,476
Total commercial | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14,756	3,926
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	13,945	7,387
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	21,868	25,668
Financing Receivable, Originated Two Years before Latest Fiscal Year	21,158	9,119
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,617	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,146	1,640
Total	89,732	43,814
Total commercial | Commercial and Industrial Sector
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	16,101	5,796
Financing Receivable, Revolving	2,164,649	2,056,535
Financing Receivable, Originated in Current Fiscal Year	1,790,062	3,295,567
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,627,650	2,394,809
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,513,027	598,839
Financing Receivable, Originated Three Years before Latest Fiscal Year	595,254	611,289
Financing Receivable, Originated Four Years before Latest Fiscal Year	486,300	330,879
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	922,126	471,535
Total	10,099,068	9,759,454
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,760
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	401
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	5,695
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	13,264
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	5,900
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	3,795
Charge offs	31,816
Total commercial | Commercial and Industrial Sector | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	477	1,423
Financing Receivable, Revolving	2,065,717	1,938,777
Financing Receivable, Originated in Current Fiscal Year	1,775,767	3,245,546
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,516,155	2,367,008
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,427,787	567,833
Financing Receivable, Originated Three Years before Latest Fiscal Year	549,748	573,120
Financing Receivable, Originated Four Years before Latest Fiscal Year	481,866	330,642
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	895,313	432,906
Total	9,712,353	9,455,833
Total commercial | Commercial and Industrial Sector | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	39	0
Financing Receivable, Revolving	26,400	93,209
Financing Receivable, Originated in Current Fiscal Year	39	3,411
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	39,694	23,607
Financing Receivable, Originated Two Years before Latest Fiscal Year	8,731	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,667	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	19
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	26,136	32,497
Total	104,666	152,744
Total commercial | Commercial and Industrial Sector | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	829	447
Financing Receivable, Revolving	72,533	24,549
Financing Receivable, Originated in Current Fiscal Year	311	41,400
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	51,502	4,193
Financing Receivable, Originated Two Years before Latest Fiscal Year	57,611	21,887
Financing Receivable, Originated Three Years before Latest Fiscal Year	20,222	38,169
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,434	218
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	623	6,133
Total	207,237	136,549
Total commercial | Commercial and Industrial Sector | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14,756	3,926
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	13,945	5,210
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	20,299	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	18,898	9,119
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,617	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	53	0
Total	74,812	14,329
Total commercial | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	17,978	13,772
Financing Receivable, Originated in Current Fiscal Year	133,882	212,883
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	187,262	236,769
Financing Receivable, Originated Two Years before Latest Fiscal Year	209,317	170,624
Financing Receivable, Originated Three Years before Latest Fiscal Year	108,436	172,630
Financing Receivable, Originated Four Years before Latest Fiscal Year	149,146	83,570
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	248,950	101,475
Total	1,054,969	991,722
Total commercial | Commercial real estate — owner occupied | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	17,557	12,447
Financing Receivable, Originated in Current Fiscal Year	133,133	211,645
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	182,517	225,627
Financing Receivable, Originated Two Years before Latest Fiscal Year	196,057	163,965
Financing Receivable, Originated Three Years before Latest Fiscal Year	104,786	160,370
Financing Receivable, Originated Four Years before Latest Fiscal Year	142,602	73,487
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	229,321	97,420
Total	1,005,973	944,961
Total commercial | Commercial real estate — owner occupied | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	421	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,000	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,666	1,136
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,446	1,491
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,737	9,713
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	17,269	12,339
Total commercial | Commercial real estate — owner occupied | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	1,325
Financing Receivable, Originated in Current Fiscal Year	748	1,238
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,177	11,141
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,334	5,523
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,205	10,769
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,807	370
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	19,520	4,055
Total	27,792	34,422
Total commercial | Commercial real estate — owner occupied | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,568
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,260
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	108
Total	3,936
Total commercial | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	16,101	5,796
Financing Receivable, Revolving	2,182,627	2,070,307
Financing Receivable, Originated in Current Fiscal Year	1,923,943	3,508,450
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,814,912	2,631,578
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,722,344	769,463
Financing Receivable, Originated Three Years before Latest Fiscal Year	703,689	783,919
Financing Receivable, Originated Four Years before Latest Fiscal Year	635,446	414,449
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,171,075	573,010
Total	11,154,037	10,751,176
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,760
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	401
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	5,695
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	13,264
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	5,900
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	3,795
Charge offs	31,816
Total commercial | Commercial and business lending | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	477	1,423
Financing Receivable, Revolving	2,083,273	1,951,224
Financing Receivable, Originated in Current Fiscal Year	1,908,900	3,457,191
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,698,672	2,592,636
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,623,845	731,798
Financing Receivable, Originated Three Years before Latest Fiscal Year	654,533	733,490
Financing Receivable, Originated Four Years before Latest Fiscal Year	624,468	404,129
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,124,635	530,326
Total	10,718,325	10,400,794
Total commercial | Commercial and business lending | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	39	0
Financing Receivable, Revolving	26,821	93,209
Financing Receivable, Originated in Current Fiscal Year	39	3,411
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	41,694	23,607
Financing Receivable, Originated Two Years before Latest Fiscal Year	16,396	1,136
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,112	1,491
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,737	9,732
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	26,136	32,497
Total	121,935	165,083
Total commercial | Commercial and business lending | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	829	447
Financing Receivable, Revolving	72,533	25,874
Financing Receivable, Originated in Current Fiscal Year	1,060	42,638
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	52,679	15,335
Financing Receivable, Originated Two Years before Latest Fiscal Year	60,945	27,410
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,427	48,938
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,242	589
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	20,143	10,188
Total	235,029	170,971
Total commercial | Commercial and business lending | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14,756	3,926
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	13,945	5,210
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	21,868	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	21,158	9,119
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,617	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	161	0
Total	78,748	14,329
Total commercial | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	157,976	106,280
Financing Receivable, Originated in Current Fiscal Year	515,979	1,713,387
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,338,016	1,490,120
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,212,162	718,117
Financing Receivable, Originated Three Years before Latest Fiscal Year	756,452	541,177
Financing Receivable, Originated Four Years before Latest Fiscal Year	535,381	281,875
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	703,014	229,387
Total	5,218,980	5,080,344
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	242
Charge offs	242
Total commercial | Commercial real estate — investor | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	157,976	106,280
Financing Receivable, Originated in Current Fiscal Year	500,154	1,633,094
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,278,072	1,419,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,181,060	683,121
Financing Receivable, Originated Three Years before Latest Fiscal Year	687,373	530,444
Financing Receivable, Originated Four Years before Latest Fiscal Year	459,677	262,858
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	634,704	210,299
Total	4,899,015	4,845,096
Total commercial | Commercial real estate — investor | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	9,400	61,968
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	54,103	24,149
Financing Receivable, Originated Two Years before Latest Fiscal Year	26,330	7,361
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	9,400
Financing Receivable, Originated Four Years before Latest Fiscal Year	64,801	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,608	10,455
Total	160,243	113,333
Total commercial | Commercial real estate — investor | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	6,425	16,147
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,842	21,303
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,771	27,635
Financing Receivable, Originated Three Years before Latest Fiscal Year	69,079	1,333
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,903	19,017
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	51,820	7,099
Total	148,840	92,535
Total commercial | Commercial real estate — investor | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	2,177
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	25,668
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,882	1,535
Total	10,882	29,380
Total commercial | Real estate construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	27,872	29,892
Financing Receivable, Originated in Current Fiscal Year	251,100	900,593
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,008,428	913,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	716,123	254,374
Financing Receivable, Originated Three Years before Latest Fiscal Year	91,982	45,149
Financing Receivable, Originated Four Years before Latest Fiscal Year	11,970	2,226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23,244	9,880
Total	2,130,719	2,155,222
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	25
Charge offs	25
Total commercial | Real estate construction | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	27,872	29,892
Financing Receivable, Originated in Current Fiscal Year	251,100	900,593
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,008,428	913,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	716,123	241,230
Financing Receivable, Originated Three Years before Latest Fiscal Year	91,982	12,062
Financing Receivable, Originated Four Years before Latest Fiscal Year	11,970	2,226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23,141	9,775
Total	2,130,617	2,108,885
Total commercial | Real estate construction | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan		0
Financing Receivable, Revolving		0
Financing Receivable, Originated in Current Fiscal Year		0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0
Financing Receivable, Originated Two Years before Latest Fiscal Year		12,174
Financing Receivable, Originated Three Years before Latest Fiscal Year		33,087
Financing Receivable, Originated Four Years before Latest Fiscal Year		0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0
Total		45,261
Total commercial | Real estate construction | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan		0
Financing Receivable, Revolving		0
Financing Receivable, Originated in Current Fiscal Year		0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0
Financing Receivable, Originated Two Years before Latest Fiscal Year		970
Financing Receivable, Originated Three Years before Latest Fiscal Year		0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0
Total		970
Total commercial | Real estate construction | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	103	105
Total	103	105
Total commercial | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	185,848	136,173
Financing Receivable, Originated in Current Fiscal Year	767,080	2,613,980
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,346,445	2,403,227
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,928,284	972,492
Financing Receivable, Originated Three Years before Latest Fiscal Year	848,434	586,326
Financing Receivable, Originated Four Years before Latest Fiscal Year	547,351	284,101
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	726,258	239,267
Total	7,349,699	7,235,565
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	266
Charge offs	266
Total commercial | Commercial Real Estate | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	185,848	136,173
Financing Receivable, Originated in Current Fiscal Year	751,254	2,533,687
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,286,500	2,332,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,897,183	924,351
Financing Receivable, Originated Three Years before Latest Fiscal Year	779,355	542,505
Financing Receivable, Originated Four Years before Latest Fiscal Year	471,646	265,083
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	657,845	220,073
Total	7,029,632	6,953,981
Total commercial | Commercial Real Estate | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	9,400	61,968
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	54,103	24,149
Financing Receivable, Originated Two Years before Latest Fiscal Year	26,330	19,535
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	42,487
Financing Receivable, Originated Four Years before Latest Fiscal Year	64,801	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,608	10,455
Total	160,243	158,595
Total commercial | Commercial Real Estate | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	6,425	16,147
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,842	21,303
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,771	28,605
Financing Receivable, Originated Three Years before Latest Fiscal Year	69,079	1,333
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,903	19,017
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	51,820	7,099
Total	148,840	93,505
Total commercial | Commercial Real Estate | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	2,177
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	25,668
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,985	1,640
Total	10,985	29,485
Total consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	8,701	9,038
Financing Receivable, Revolving	708,679	708,817
Financing Receivable, Originated in Current Fiscal Year	1,191,739	2,732,080
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,805,096	2,306,769
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,271,661	1,728,037
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,595,728	830,759
Financing Receivable, Originated Four Years before Latest Fiscal Year	770,495	383,731
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,346,054	2,122,635
Total	11,689,451	10,812,828
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	3,363
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	254
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	3,674
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	633
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	177
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	45
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	662
Charge offs	8,809
Total consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,417	7,318
Financing Receivable, Revolving	707,925	708,154
Financing Receivable, Originated in Current Fiscal Year	1,190,534	2,720,589
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,796,822	2,301,991
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,263,612	1,721,576
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,587,959	825,866
Financing Receivable, Originated Four Years before Latest Fiscal Year	762,917	378,310
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,295,656	2,083,904
Total	11,605,425	10,740,390
Total consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	360	52
Financing Receivable, Revolving	621	592
Financing Receivable, Originated in Current Fiscal Year	601	1,063
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,476	403
Financing Receivable, Originated Two Years before Latest Fiscal Year	405	101
Financing Receivable, Originated Three Years before Latest Fiscal Year	14	5
Financing Receivable, Originated Four Years before Latest Fiscal Year	57	47
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	543	398
Total	3,717	2,609
Total consumer | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11	0
Financing Receivable, Revolving	0	15
Financing Receivable, Originated in Current Fiscal Year	0	455
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	80	71
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	77	772
Financing Receivable, Originated Four Years before Latest Fiscal Year	392	31
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	935	831
Total	1,483	2,175
Total consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	913	1,668
Financing Receivable, Revolving	133	56
Financing Receivable, Originated in Current Fiscal Year	604	9,973
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,718	4,304
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,644	6,360
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,679	4,116
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,129	5,343
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	48,919	37,501
Total	78,826	67,654
Total consumer | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	294,640	1,419,527
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,729,032	2,188,332
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,183,725	1,722,979
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,592,654	821,645
Financing Receivable, Originated Four Years before Latest Fiscal Year	764,176	375,768
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,218,418	1,983,299
Total	8,782,645	8,511,550
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	128
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	22
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	148
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	7
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	410
Charge offs	714
Total consumer | Residential mortgage | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	294,499	1,410,566
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,725,855	2,184,125
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,176,722	1,716,663
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,585,071	817,164
Financing Receivable, Originated Four Years before Latest Fiscal Year	757,087	370,724
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,176,012	1,951,406
Total	8,715,245	8,450,648
Total consumer | Residential mortgage | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan		0
Financing Receivable, Revolving		0
Financing Receivable, Originated in Current Fiscal Year		0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		284
Financing Receivable, Originated Two Years before Latest Fiscal Year		96
Financing Receivable, Originated Three Years before Latest Fiscal Year		0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		63
Total		444
Total consumer | Residential mortgage | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	455
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	80	71
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	77	738
Financing Receivable, Originated Four Years before Latest Fiscal Year	347	29
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	744	685
Total	1,247	1,978
Total consumer | Residential mortgage | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	142	8,506
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,098	3,851
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,003	6,219
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,506	3,744
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,742	5,014
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	41,662	31,145
Total	66,153	58,480
Total consumer | Auto finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	886,581	1,273,406
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,036,271	106,551
Financing Receivable, Originated Two Years before Latest Fiscal Year	83,289	333
Financing Receivable, Originated Three Years before Latest Fiscal Year	204	1,276
Financing Receivable, Originated Four Years before Latest Fiscal Year	617	446
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	202	61
Total	2,007,164	1,382,073
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	254
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	3,355
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	442
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	5
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Charge offs	4,056
Total consumer | Auto finance | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	885,528	1,271,205
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,031,283	106,102
Financing Receivable, Originated Two Years before Latest Fiscal Year	82,447	333
Financing Receivable, Originated Three Years before Latest Fiscal Year	204	1,267
Financing Receivable, Originated Four Years before Latest Fiscal Year	614	446
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	202	61
Total	2,000,278	1,379,414
Total consumer | Auto finance | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	601	1,052
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,436	118
Financing Receivable, Originated Two Years before Latest Fiscal Year	316	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	2,353	1,170
Total consumer | Auto finance | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	452	1,149
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,551	331
Financing Receivable, Originated Two Years before Latest Fiscal Year	527	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	9
Financing Receivable, Originated Four Years before Latest Fiscal Year	4	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	4,533	1,490
Total consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	8,504	8,891
Financing Receivable, Revolving	514,599	508,329
Financing Receivable, Originated in Current Fiscal Year	4,986	31,695
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	35,859	6,610
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,849	2,243
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,549	6,538
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,175	7,333
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	59,631	61,605
Total	623,650	624,353
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	12
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	43
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	45
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	22
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	147
Charge offs	269
Total consumer | Home equity | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,318	7,254
Financing Receivable, Revolving	514,431	508,212
Financing Receivable, Originated in Current Fiscal Year	4,986	31,389
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	35,751	6,508
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,671	2,112
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,450	6,197
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,703	6,966
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	51,693	54,827
Total	614,685	616,211
Total consumer | Home equity | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	343	47
Financing Receivable, Revolving	102	102
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	40	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	73	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	55	47
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	542	310
Total	811	458
Total consumer | Home equity | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11	0
Financing Receivable, Revolving	0	15
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	34
Financing Receivable, Originated Four Years before Latest Fiscal Year	45	2
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	192	146
Total	236	197
Total consumer | Home equity | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	832	1,590
Financing Receivable, Revolving	67	0
Financing Receivable, Originated in Current Fiscal Year	0	306
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	68	102
Financing Receivable, Originated Two Years before Latest Fiscal Year	105	131
Financing Receivable, Originated Three Years before Latest Fiscal Year	99	307
Financing Receivable, Originated Four Years before Latest Fiscal Year	373	319
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,205	6,322
Total	7,917	7,487
Total consumer | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	197	147
Financing Receivable, Revolving	194,079	200,488
Financing Receivable, Originated in Current Fiscal Year	5,532	7,452
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,934	5,276
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,797	2,482
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,321	1,300
Financing Receivable, Originated Four Years before Latest Fiscal Year	527	184
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	67,803	77,670
Total	275,993	294,851
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	3,351
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	149
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	124
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	29
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	12
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	106
Charge offs	3,769
Total consumer | Other consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	99	64
Financing Receivable, Revolving	193,494	199,942
Financing Receivable, Originated in Current Fiscal Year	5,521	7,429
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,933	5,256
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,772	2,468
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,234	1,238
Financing Receivable, Originated Four Years before Latest Fiscal Year	514	174
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	67,749	77,611
Total	275,217	294,117
Total consumer | Other consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	17	6
Financing Receivable, Revolving	520	490
Financing Receivable, Originated in Current Fiscal Year	0	11
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	16	5
Financing Receivable, Originated Three Years before Latest Fiscal Year	14	5
Financing Receivable, Originated Four Years before Latest Fiscal Year	2	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2	25
Total	553	537
Total consumer | Other consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	81	78
Financing Receivable, Revolving	66	56
Financing Receivable, Originated in Current Fiscal Year	11	11
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1	21
Financing Receivable, Originated Two Years before Latest Fiscal Year	8	10
Financing Receivable, Originated Three Years before Latest Fiscal Year	73	56
Financing Receivable, Originated Four Years before Latest Fiscal Year	11	10
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	52	34
Total	$ 222	$ 197

XML

Loans Past Due Status (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Summarized details of Loans
Current	$ 29,975,051	$ 29,975,051	$ 28,652,257
Financing Receivable, Nonaccrual	168,558	168,558	111,467
Loans and Leases Receivable, Net of Deferred Income, Total	30,193,187	30,193,187	28,799,569
Nonaccrual Loans, Current Portion	$ 114,000	$ 114,000	$ 64,000
Percent of current nonaccrual loans	68.00%	68.00%	58.00%
Financing Receivable, Nonaccrual, Interest Income	$ 0	$ 0	$ 0
Financing Receivable, Nonaccrual, No Allowance	65,000	65,000	11,000
30-59 Days Past Due
Summarized details of Loans
Total Past Due	42,797	42,797	26,256
60-89 Days Past Due
Summarized details of Loans
Total Past Due	4,626	4,626	7,861
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	2,156	2,156	1,728
Commercial and Industrial Sector
Summarized details of Loans
Current	10,022,308	10,022,308	9,738,561
Financing Receivable, Nonaccrual	74,812	74,812	14,329
Loans and Leases Receivable, Net of Deferred Income, Total	10,099,068	10,099,068	9,759,454
Commercial and Industrial Sector | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	671	671	716
Commercial and Industrial Sector | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	835	835	5,566
Commercial and Industrial Sector | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	441	441	282
Commercial real estate — owner occupied
Summarized details of Loans
Current	1,049,156	1,049,156	991,493
Financing Receivable, Nonaccrual	3,936	3,936	0
Loans and Leases Receivable, Net of Deferred Income, Total	1,054,969	1,054,969	991,722
Commercial real estate — owner occupied | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	1,877	1,877	218
Commercial real estate — owner occupied | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0	12
Commercial real estate — owner occupied | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0	0
Commercial and business lending
Summarized details of Loans
Current	11,071,464	11,071,464	10,730,053
Financing Receivable, Nonaccrual	78,748	78,748	14,329
Loans and Leases Receivable, Net of Deferred Income, Total	11,154,037	11,154,037	10,751,176
Commercial and business lending | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	2,548	2,548	934
Commercial and business lending | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	835	835	5,578
Commercial and business lending | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	441	441	282
Commercial real estate — investor
Summarized details of Loans
Current	5,197,977	5,197,977	5,049,897
Financing Receivable, Nonaccrual	10,882	10,882	29,380
Loans and Leases Receivable, Net of Deferred Income, Total	5,218,980	5,218,980	5,080,344
Commercial real estate — investor | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	10,120	10,120	1,067
Commercial real estate — investor | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	1	1	0
Commercial real estate — investor | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0	0
Real estate construction
Summarized details of Loans
Current	2,130,606	2,130,606	2,155,077
Financing Receivable, Nonaccrual	103	103	105
Loans and Leases Receivable, Net of Deferred Income, Total	2,130,719	2,130,719	2,155,222
Real estate construction | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	10	10	39
Real estate construction | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0	0
Real estate construction | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0	0
Commercial real estate lending
Summarized details of Loans
Current	7,328,583	7,328,583	7,204,975
Financing Receivable, Nonaccrual	10,985	10,985	29,485
Loans and Leases Receivable, Net of Deferred Income, Total	7,349,699	7,349,699	7,235,565
Commercial real estate lending | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	10,130	10,130	1,105
Commercial real estate lending | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	1	1	0
Commercial real estate lending | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0	0
Total commercial
Summarized details of Loans
Current	18,400,047	18,400,047	17,935,028
Financing Receivable, Nonaccrual	89,732	89,732	43,814
Loans and Leases Receivable, Net of Deferred Income, Total	18,503,736	18,503,736	17,986,742
Total commercial | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	12,678	12,678	2,040
Total commercial | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	836	836	5,578
Total commercial | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	441	441	282
Residential mortgage
Summarized details of Loans
Current	8,704,840	8,704,840	8,443,072
Financing Receivable, Nonaccrual	66,153	66,153	58,480
Loans and Leases Receivable, Net of Deferred Income, Total	8,782,645	8,782,645	8,511,550
Residential mortgage | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	11,652	11,652	9,811
Residential mortgage | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	0	0	63
Residential mortgage | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0	124
Auto finance
Summarized details of Loans
Current	1,985,943	1,985,943	1,371,176
Financing Receivable, Nonaccrual	4,533	4,533	1,490
Loans and Leases Receivable, Net of Deferred Income, Total	2,007,164	2,007,164	1,382,073
Auto finance | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	14,335	14,335	8,238
Auto finance | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	2,353	2,353	1,170
Auto finance | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0	0
Home equity
Summarized details of Loans
Current	612,045	612,045	611,259
Financing Receivable, Nonaccrual	7,917	7,917	7,487
Loans and Leases Receivable, Net of Deferred Income, Total	623,650	623,650	624,353
Home equity | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	2,876	2,876	5,149
Home equity | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	811	811	458
Home equity | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	0	0	0
Other consumer
Summarized details of Loans
Current	272,175	272,175	291,722
Financing Receivable, Nonaccrual	222	222	197
Loans and Leases Receivable, Net of Deferred Income, Total	275,993	275,993	294,851
Other consumer | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	1,255	1,255	1,018
Other consumer | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	625	625	592
Other consumer | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	1,715	1,715	1,322
Total consumer
Summarized details of Loans
Current	11,575,003	11,575,003	10,717,229
Financing Receivable, Nonaccrual	78,826	78,826	67,654
Loans and Leases Receivable, Net of Deferred Income, Total	11,689,451	11,689,451	10,812,828
Total consumer | 30-59 Days Past Due
Summarized details of Loans
Total Past Due	30,118	30,118	24,216
Total consumer | 60-89 Days Past Due
Summarized details of Loans
Total Past Due	3,789	3,789	2,283
Total consumer | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Summarized details of Loans
Total Past Due	$ 1,715	$ 1,715	$ 1,446

XML

Loans, Modifications (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified, Weighted Average Term, Range, From	297 months
Financing Receivable, Modified, Weighted Average Term, Range, To	328 months
Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 1,724
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	(10.00%)
Extended Maturity [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 234
Financing Receivable, Modified, Weighted Average Term Increase from Modification	32 months
Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 1,092
Commercial and Industrial Sector | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 234
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	(18.00%)
Residential mortgage | Extended Maturity [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 208
Financing Receivable, Modified, Weighted Average Term Increase from Modification	26 months
Residential mortgage | Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 830
Auto finance | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 169
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	(4.00%)
Home equity | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 77
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	0.00%
Home equity | Extended Maturity [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 26
Financing Receivable, Modified, Weighted Average Term Increase from Modification	78 months
Home equity | Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 262
Other consumer | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified [Line Items]
Financing Receivable, Modified in Period, Amount	$ 1,243
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification	(21.00%)

XML

Loans, Modifications in Last 12 Months, Performance $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	$ 1,963
Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	126
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	961
Commercial and Industrial Sector | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	234
Commercial and Industrial Sector | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Commercial and Industrial Sector | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Commercial and Industrial Sector | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Residential mortgage | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	81
Residential mortgage | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	126
Residential mortgage | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Residential mortgage | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	832
Auto finance | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	169
Auto finance | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Auto finance | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Auto finance | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Home equity | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	236
Home equity | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Home equity | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Home equity | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	130
Other consumer | Financial Asset, Not Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	1,243
Other consumer | Financial Asset, 30-89 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Other consumer | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	0
Other consumer | Financial Asset, Nonaccrual [Member]
Financing Receivable, Modified in the Last 12 Months, Performance [Line Items]
Financing Receivable, Modified in Period, Amount	$ 0

XML

Loans, Modified, Subsequent Default (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	$ 0
Extended Maturity [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	208
Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	224
Home equity | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	0
Home equity | Extended Maturity [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	0
Home equity | Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	18
Residential mortgage | Interest Rate Below Market Reduction [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	0
Residential mortgage | Extended Maturity [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	208
Residential mortgage | Extended Maturity and Interest Rate Reduction [Member]
Financing Receivable, Modified, Subsequent Default [Line Items]
Financing Receivable, Modified, Subsequent Default	$ 206

XML

Loans, Troubled Debt Restructurings Performing and Nonaccrual (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	$ 32,868
Nonaccrual Restructured Loans(a)	20,127
Commercial and Industrial Sector
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	12,453
Nonaccrual Restructured Loans(a)	0
Commercial real estate — owner occupied
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	316
Nonaccrual Restructured Loans(a)	0
Commercial real estate — investor
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	128
Nonaccrual Restructured Loans(a)	2,074
Real estate construction
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	195
Nonaccrual Restructured Loans(a)	9
Residential mortgage
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	16,829
Nonaccrual Restructured Loans(a)	17,117
Home equity
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	2,148
Nonaccrual Restructured Loans(a)	927
Other consumer
Financing Receivable, Impaired [Line Items]
Performing Restructured Loans	798
Nonaccrual Restructured Loans(a)	$ 0

XML

Loans, Troubled Debt Restructurings, Summary (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan	59
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 10,844
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 11,083
Commercial and Industrial Sector
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan	2
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 265
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 265
Commercial real estate — investor
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan	1
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 547
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 573
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan	44
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 9,641
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 9,833
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan	12
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 390
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 412

XML

Loans, Troubled Debt Restructurings Subsequent Default (Details) - Residential mortgage $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) loan
Financing Receivable, Modified [Line Items]
Number of Loans | loan	4
Financing Receivable, Modified, Subsequent Default | $	$ 1,178

XML

Loans, Changes in the Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ 40,891
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			38,776	$ 39,776	$ 39,776
Provision for credit losses			(4,000)		(1,000)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	$ 34,776		34,776		38,776
Allowance for credit losses on loans
Charge offs			40,891
Provision for credit losses	21,943	$ 16,998	62,014	13,006
Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			312,720	280,015	280,015
Charge offs			(40,891)		(10,146)
Recoveries			7,965		8,852
Net Charge offs			(32,925)		(1,294)
Provision for credit losses			66,000		34,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	345,795		345,795		312,720
Allowance for credit losses on loans
Charge offs			(40,891)		(10,146)
Recoveries			7,965		8,852
Net Charge offs			(32,925)		(1,294)
Allowance for Loan Losses [Member] | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			119,076	89,857	89,857
Charge offs			(31,816)		(4,491)
Recoveries			2,322		5,282
Net Charge offs			(29,494)		791
Provision for credit losses			34,710		28,428
Financing Receivable, Allowance for Credit Loss, Ending Balance	124,292		124,292		119,076
Allowance for credit losses on loans
Charge offs			(31,816)		(4,491)
Recoveries			2,322		5,282
Net Charge offs			(29,494)		791
Allowance for Loan Losses [Member] | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			9,475	11,473	11,473
Charge offs			0		0
Recoveries			8		13
Net Charge offs			8		13
Provision for credit losses			1,976		(2,011)
Financing Receivable, Allowance for Credit Loss, Ending Balance	11,459		11,459		9,475
Allowance for credit losses on loans
Charge offs			0		0
Recoveries			8		13
Net Charge offs			8		13
Allowance for Loan Losses [Member] | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			128,551	101,330	101,330
Charge offs			(31,816)		(4,491)
Recoveries			2,329		5,295
Net Charge offs			(29,487)		804
Provision for credit losses			36,686		26,418
Financing Receivable, Allowance for Credit Loss, Ending Balance	135,751		135,751		128,551
Allowance for credit losses on loans
Charge offs			(31,816)		(4,491)
Recoveries			2,329		5,295
Net Charge offs			(29,487)		804
Allowance for Loan Losses [Member] | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			54,398	72,803	72,803
Charge offs			(242)		(50)
Recoveries			2,789		50
Net Charge offs			2,547		0
Provision for credit losses			10,520		(18,405)
Financing Receivable, Allowance for Credit Loss, Ending Balance	67,466		67,466		54,398
Allowance for credit losses on loans
Charge offs			(242)		(50)
Recoveries			2,789		50
Net Charge offs			2,547		0
Allowance for Loan Losses [Member] | Real estate construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			45,589	37,643	37,643
Charge offs			(25)		(48)
Recoveries			42		106
Net Charge offs			18		58
Provision for credit losses			6,128		7,887
Financing Receivable, Allowance for Credit Loss, Ending Balance	51,734		51,734		45,589
Allowance for credit losses on loans
Charge offs			(25)		(48)
Recoveries			42		106
Net Charge offs			18		58
Allowance for Loan Losses [Member] | Commercial real estate lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			99,986	110,446	110,446
Charge offs			(266)		(98)
Recoveries			2,831		156
Net Charge offs			2,565		58
Provision for credit losses			16,648		(10,518)
Financing Receivable, Allowance for Credit Loss, Ending Balance	119,200		119,200		99,986
Allowance for credit losses on loans
Charge offs			(266)		(98)
Recoveries			2,831		156
Net Charge offs			2,565		58
Allowance for Loan Losses [Member] | Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			228,538	211,776	211,776
Charge offs			(32,082)		(4,588)
Recoveries			5,161		5,451
Net Charge offs			(26,921)		862
Provision for credit losses			53,334		15,900
Financing Receivable, Allowance for Credit Loss, Ending Balance	254,951		254,951		228,538
Allowance for credit losses on loans
Charge offs			(32,082)		(4,588)
Recoveries			5,161		5,451
Net Charge offs			(26,921)		862
Allowance for Loan Losses [Member] | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			38,298	40,787	40,787
Charge offs			(714)		(567)
Recoveries			357		908
Net Charge offs			(358)		341
Provision for credit losses			2,496		(2,830)
Financing Receivable, Allowance for Credit Loss, Ending Balance	40,437		40,437		38,298
Allowance for credit losses on loans
Charge offs			(714)		(567)
Recoveries			357		908
Net Charge offs			(358)		341
Allowance for Loan Losses [Member] | Auto finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			19,619	1,999	1,999
Charge offs			(4,056)		(1,041)
Recoveries			783		98
Net Charge offs			(3,273)		(943)
Provision for credit losses			6,654		18,563
Financing Receivable, Allowance for Credit Loss, Ending Balance	23,000		23,000		19,619
Allowance for credit losses on loans
Charge offs			(4,056)		(1,041)
Recoveries			783		98
Net Charge offs			(3,273)		(943)
Allowance for Loan Losses [Member] | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			14,875	14,011	14,011
Charge offs			(269)		(587)
Recoveries			921		1,385
Net Charge offs			652		798
Provision for credit losses			(413)		66
Financing Receivable, Allowance for Credit Loss, Ending Balance	15,114		15,114		14,875
Allowance for credit losses on loans
Charge offs			(269)		(587)
Recoveries			921		1,385
Net Charge offs			652		798
Allowance for Loan Losses [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			11,390	11,441	11,441
Charge offs			(3,769)		(3,363)
Recoveries			744		1,010
Net Charge offs			(3,025)		(2,353)
Provision for credit losses			3,928		2,301
Financing Receivable, Allowance for Credit Loss, Ending Balance	12,293		12,293		11,390
Allowance for credit losses on loans
Charge offs			(3,769)		(3,363)
Recoveries			744		1,010
Net Charge offs			(3,025)		(2,353)
Allowance for Loan Losses [Member] | Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance			84,182	68,239	68,239
Charge offs			(8,809)		(5,558)
Recoveries			2,805		3,401
Net Charge offs			(6,004)		(2,157)
Provision for credit losses			12,666		18,100
Financing Receivable, Allowance for Credit Loss, Ending Balance	90,844		90,844		84,182
Allowance for credit losses on loans
Charge offs			(8,809)		(5,558)
Recoveries			2,805		3,401
Net Charge offs			(6,004)		(2,157)
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member]
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			38,776	39,776	39,776
Provision for credit losses			(4,000)		(1,000)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	34,776		34,776		38,776
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and industrial
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			12,997	18,459	18,459
Provision for credit losses			(2,365)		(5,462)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	10,632		10,632		12,997
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — owner occupied
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			103	208	208
Provision for credit losses			15		(105)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	119		119		103
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial and business lending
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			13,101	18,667	18,667
Provision for credit losses			(2,350)		(5,566)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	10,751		10,751		13,101
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate — investor
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			710	936	936
Provision for credit losses			39		(226)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	749		749		710
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Real estate construction
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			20,583	15,586	15,586
Provision for credit losses			(1,000)		4,997
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	19,583		19,583		20,583
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Commercial real estate lending
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			21,292	16,522	16,522
Provision for credit losses			(961)		4,770
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	20,331		20,331		21,292
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total commercial
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			34,393	35,189	35,189
Provision for credit losses			(3,311)		(796)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	31,082		31,082		34,393
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Home equity
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			2,699	2,592	2,592
Provision for credit losses			(17)		107
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	2,682		2,682		2,699
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Other consumer
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			1,683	1,995	1,995
Provision for credit losses			(672)		(311)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	1,011		1,011		1,683
SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] | Total consumer
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance			4,382	4,587	4,587
Provision for credit losses			(689)		(204)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	3,693		3,693		4,382
Allowance for Loans Losses and Unfunded Commitments [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			(40,891)		(10,146)
Recoveries			7,965		8,852
Net Charge offs			(32,925)		(1,294)
Allowance for credit losses on loans
Balance at beginning of period			351,496	319,791	319,791
Charge offs			(40,891)		(10,146)
Recoveries			7,965		8,852
Net Charge offs			(32,925)		(1,294)
Provision for credit losses			62,000		33,000
Balance at end of period	$ 380,571		$ 380,571		$ 351,496
Percent of Loans	1.26%		1.26%		1.22%
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (31,816)		$ (4,491)
Recoveries			2,322		5,282
Net Charge offs			(29,494)		791
Allowance for credit losses on loans
Balance at beginning of period			132,073	108,316	108,316
Charge offs			(31,816)		(4,491)
Recoveries			2,322		5,282
Net Charge offs			(29,494)		791
Provision for credit losses			32,345		22,967
Balance at end of period	$ 134,924		$ 134,924		$ 132,073
Percent of Loans	1.34%		1.34%		1.35%
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ 0		$ 0
Recoveries			8		13
Net Charge offs			8		13
Allowance for credit losses on loans
Balance at beginning of period			9,579	11,681	11,681
Charge offs			0		0
Recoveries			8		13
Net Charge offs			8		13
Provision for credit losses			1,991		(2,115)
Balance at end of period	$ 11,578		$ 11,578		$ 9,579
Percent of Loans	1.10%		1.10%		0.97%
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (31,816)		$ (4,491)
Recoveries			2,329		5,295
Net Charge offs			(29,487)		804
Allowance for credit losses on loans
Balance at beginning of period			141,652	119,997	119,997
Charge offs			(31,816)		(4,491)
Recoveries			2,329		5,295
Net Charge offs			(29,487)		804
Provision for credit losses			34,336		20,852
Balance at end of period	$ 146,502		$ 146,502		$ 141,652
Percent of Loans	1.31%		1.31%		1.32%
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (242)		$ (50)
Recoveries			2,789		50
Net Charge offs			2,547		0
Allowance for credit losses on loans
Balance at beginning of period			55,108	73,739	73,739
Charge offs			(242)		(50)
Recoveries			2,789		50
Net Charge offs			2,547		0
Provision for credit losses			10,560		(18,631)
Balance at end of period	$ 68,214		$ 68,214		$ 55,108
Percent of Loans	1.31%		1.31%		1.08%
Allowance for Loans Losses and Unfunded Commitments [Member] | Real estate construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (25)		$ (48)
Recoveries			42		106
Net Charge offs			18		58
Allowance for credit losses on loans
Balance at beginning of period			66,171	53,229	53,229
Charge offs			(25)		(48)
Recoveries			42		106
Net Charge offs			18		58
Provision for credit losses			5,128		12,884
Balance at end of period	$ 71,317		$ 71,317		$ 66,171
Percent of Loans	3.35%		3.35%		3.07%
Allowance for Loans Losses and Unfunded Commitments [Member] | Commercial real estate lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (266)		$ (98)
Recoveries			2,831		156
Net Charge offs			2,565		58
Allowance for credit losses on loans
Balance at beginning of period			121,279	126,968	126,968
Charge offs			(266)		(98)
Recoveries			2,831		156
Net Charge offs			2,565		58
Provision for credit losses			15,687		(5,748)
Balance at end of period	$ 139,531		$ 139,531		$ 121,279
Percent of Loans	1.90%		1.90%		1.68%
Allowance for Loans Losses and Unfunded Commitments [Member] | Total commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (32,082)		$ (4,588)
Recoveries			5,161		5,451
Net Charge offs			(26,921)		862
Allowance for credit losses on loans
Balance at beginning of period			262,931	246,965	246,965
Charge offs			(32,082)		(4,588)
Recoveries			5,161		5,451
Net Charge offs			(26,921)		862
Provision for credit losses			50,023		15,104
Balance at end of period	$ 286,033		$ 286,033		$ 262,931
Percent of Loans	1.55%		1.55%		1.46%
Allowance for Loans Losses and Unfunded Commitments [Member] | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (714)		$ (567)
Recoveries			357		908
Net Charge offs			(358)		341
Allowance for credit losses on loans
Balance at beginning of period			38,298	40,787	40,787
Charge offs			(714)		(567)
Recoveries			357		908
Net Charge offs			(358)		341
Provision for credit losses			2,496		(2,830)
Balance at end of period	$ 40,437		$ 40,437		$ 38,298
Percent of Loans	0.46%		0.46%		0.45%
Allowance for Loans Losses and Unfunded Commitments [Member] | Auto finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (4,056)		$ (1,041)
Recoveries			783		98
Net Charge offs			(3,273)		(943)
Allowance for credit losses on loans
Balance at beginning of period			19,619	1,999	1,999
Charge offs			(4,056)		(1,041)
Recoveries			783		98
Net Charge offs			(3,273)		(943)
Provision for credit losses			6,654		18,563
Balance at end of period	$ 23,000		$ 23,000		$ 19,619
Percent of Loans	1.15%		1.15%		1.42%
Allowance for Loans Losses and Unfunded Commitments [Member] | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (269)		$ (587)
Recoveries			921		1,385
Net Charge offs			652		798
Allowance for credit losses on loans
Balance at beginning of period			17,574	16,603	16,603
Charge offs			(269)		(587)
Recoveries			921		1,385
Net Charge offs			652		798
Provision for credit losses			(430)		173
Balance at end of period	$ 17,797		$ 17,797		$ 17,574
Percent of Loans	2.85%		2.85%		2.81%
Allowance for Loans Losses and Unfunded Commitments [Member] | Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (3,769)		$ (3,363)
Recoveries			744		1,010
Net Charge offs			(3,025)		(2,353)
Allowance for credit losses on loans
Balance at beginning of period			13,073	13,436	13,436
Charge offs			(3,769)		(3,363)
Recoveries			744		1,010
Net Charge offs			(3,025)		(2,353)
Provision for credit losses			3,256		1,990
Balance at end of period	$ 13,304		$ 13,304		$ 13,073
Percent of Loans	4.82%		4.82%		4.43%
Allowance for Loans Losses and Unfunded Commitments [Member] | Total consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs			$ (8,809)		$ (5,558)
Recoveries			2,805		3,401
Net Charge offs			(6,004)		(2,157)
Allowance for credit losses on loans
Balance at beginning of period			88,565	$ 72,825	72,825
Charge offs			(8,809)		(5,558)
Recoveries			2,805		3,401
Net Charge offs			(6,004)		(2,157)
Provision for credit losses			11,977		17,896
Balance at end of period	$ 94,538		$ 94,538		$ 88,565
Percent of Loans	0.81%		0.81%		0.82%

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Loans Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Loans Information [Line Items]
Interest receivable	$ 171,119		$ 171,119		$ 144,449
Financing Receivable, Nonaccrual, Interest Income	347	$ 189	1,000	$ 328
Loans and Finance Receivables [Member]
Loans Information [Line Items]
Interest receivable	$ 136,000		$ 136,000		$ 113,000

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Goodwill and Other Intangible Assets, Summary of Core Deposit and Other Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Summary of core deposit intangibles and other intangibles
Other intangible amortization	$ 2,203	$ 2,203	$ 6,608	$ 6,608
Core Deposit Intangibles
Summary of core deposit intangibles and other intangibles
Gross carrying amount at the beginning of period					$ 88,109	$ 88,109
Accumulated amortization	(45,435)		(45,435)		(38,827)
Total estimated amortization expense and MSRs decay	$ 42,674		42,674		49,282
Other intangible amortization			$ 6,608		$ 8,811

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Goodwill and Other Intangible Assets, Mortgage Servicing Rights Roll-Forward (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Jan. 01, 2022	Dec. 31, 2021
Summary Of Changes In Balance Of Mortgage Servicing Rights Asset And Mortgage Servicing Rights Valuation Allowance [Abstract]
Servicing Asset at Amortized Cost					$ 54,862
Cumulative effect of accounting methodology change				$ 2,296
Servicing Asset at Fair Value, Amount, Beginning Balance	$ 77,351	$ 57,158	$ 57,158
Additions	2,477	$ 6,316	7,279
Paydowns	(5,354)		(9,350)
Change in fair value model assumptions	8,338		5,715
Changes in fair value of asset	6,320		16,549
Servicing Asset at Fair Value, Amount, Ending Balance	89,131		77,351
Portfolio Of Residential Mortgage Loans Serviced For Others	$ 6,451,969		$ 6,711,820
Mortgage Servicing Rights Net To Servicing Portfolio	1.38%		1.15%

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Goodwill and Other Intangible Assets, Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Core Deposit Intangibles
Estimated future amortization expense
Three months ended December 31, 2023	$ 2,203
2024	8,811
2025	8,811
2026	8,811
2027	8,811
2028	3,485
Beyond 2028	1,742
Total estimated amortization expense and MSRs decay	42,674	$ 49,282
Mortgage Servicing Rights
Estimated future amortization expense
Three months ended December 31, 2023	3,630
2024	13,789
2025	12,373
2026	11,111
2027	9,768
2028	8,641
Beyond 2028	29,819
Total estimated amortization expense and MSRs decay	$ 89,131

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Goodwill and Other Intangible Assets (Details Textuals) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill, Impaired, Facts and Circumstances Leading to Impairment	no
Goodwill, Impairment Loss	$ 0	$ 0
Goodwill	$ 1,104,992	$ 1,104,992

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Short and Long-Term Funding, FHLB Advances (Components of Short-term and Long-term Funding) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Short-term Funding [Abstract]
Federal funds purchased	$ 300,000	$ 344,170
Securities sold under agreements to repurchase	151,644	240,969
Federal funds purchased and securities sold under agreements to repurchase	451,644	585,139
Commercial paper	0	20,798
Total short-term funding	451,644	605,937
Long-term funding
Subordinated Debt	550,000	250,000
Other Long-term Debt and Capitalized Costs	(8,027)	(544)
Finance lease liability	405	469
Long-term Debt	529,459	248,071
TotalShortTermLongTermExcludingFHLB	981,103	854,007
Advance from Federal Home Loan Bank	2,545,000	3,125,000
Advance from Federal Home Loan Bank [Abstract]
Advance from Federal Home Loan Bank	2,545,000	3,125,000
Long-Term Federal Home Loan Bank Advances	1,209,938	1,209,170
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	3,733,041	4,319,861
Debt, Long-Term and Short-Term, Combined Amount	4,714,145	5,173,869
Fair Value Hedging [Member]
Long-term funding
Subordinated Debt	(12,919)	(1,855)
Advance from Federal Home Loan Bank	(21,897)	(14,308)
Advance from Federal Home Loan Bank [Abstract]
Advance from Federal Home Loan Bank	$ (21,897)	$ (14,308)

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Short and Long-Term Funding (Remaining Contractual Maturity of the Securities Sold Under Agreements to Repurchase) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Agency mortgage-related securities | Maturity Overnight and on Demand [Member]
RemainingContractualMaturityoftheSecuritiesSoldUnderAgreementtoRepurchase [Line Items]
Repurchase agreements	$ 151,644	$ 240,969

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Short and Long-Term Funding (Long-term Funding Narrative) (Details Textuals) - USD ($) $ in Millions		1 Months Ended
	Feb. 10, 2023	Nov. 30, 2014	Sep. 30, 2023
Long-term funding
Fair Value of Pledged Securites to Securities Sold under Agreements to Repurchase			164.00%
Debt Instrument, Redemption Period, Start Date	Mar. 01, 2028
Interest Added to UST 5 Year Rate	2.812%
Two Thousand Fourteen Subordinated Notes
Long-term funding
Debt Instrument, Issuance Date Month, Year		November 2014
Junior Subordinated Debentures Issued		$ 250
Debt Instrument, Term		10 years
Debt Instrument, Maturity Date Month, Year		January 2025
Debt Instrument Call Date Earliest Month Year		October 2024
Subordinated Borrowing, Interest Rate		4.25%
Two Thousand Twenty Three Subordinated Notes
Long-term funding
Debt Instrument, Issuance Date Month, Year	February 2023
Junior Subordinated Debentures Issued	$ 300
Debt Instrument, Maturity Date Month, Year	March 1, 2033
Subordinated Borrowing, Interest Rate	6.625%

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Derivative and Hedging Activities, Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivative Instrument Detail [Abstract]
Mortgage derivative asset, fair value, forward commitment	$ 806
Other Assets [Member]
Derivative Instrument Detail [Abstract]
Derivatives (trading and other assets), fair value	148,373	$ 67,690
Less: Legally enforceable master netting agreements	1,252	2,788
Less: Cash collateral pledged/received	88,207	26,898
Derivative Asset	58,915	38,003
Liability
Derivative Instrument Detail [Abstract]
Derivatives (trading and other liabilities), fair value	317,109	254,079
Less: Legally enforceable master netting agreements	1,252	2,788
Less: Cash collateral pledged/received	0	217
Derivatives (trading liabilities)	315,857	251,073
Designated as Hedging Instrument | Other Assets [Member]
Derivative Instrument Detail [Abstract]
Derivatives (trading and other assets), fair value	4,995	4,765
Designated as Hedging Instrument | Other Assets [Member] | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	1,150,000	900,000
Designated as Hedging Instrument | Other Assets [Member] | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	353,217	261,595
Designated as Hedging Instrument | Liability
Derivative Instrument Detail [Abstract]
Derivatives (trading and other assets), fair value	21,654	2,233
Designated as Hedging Instrument | Liability | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	1,700,000	1,150,000
Designated as Hedging Instrument | Liability | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	70,019	167,088
Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivative Instrument Detail [Abstract]
Derivatives (trading and other assets), fair value	143,379	62,925
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	3,022,150	4,246,823
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	74,245	68,570
Not Designated as Hedging Instrument [Member] | Other Assets [Member] | Mortgage banking(a)(b)
Derivative Instrument Detail [Abstract]
Derivative Asset, Notional Amount	43,436	21,265
Not Designated as Hedging Instrument [Member] | Liability
Derivative Instrument Detail [Abstract]
Derivatives (trading and other assets), fair value	295,455	251,847
Not Designated as Hedging Instrument [Member] | Liability | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	6,320,192	4,599,391
Not Designated as Hedging Instrument [Member] | Liability | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	63,309	34,240
Not Designated as Hedging Instrument [Member] | Liability | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instrument Detail [Abstract]
Derivative Liability, Notional Amount	84,000	33,000
Fair Value, Inputs, Level 3
Derivative Instrument Detail [Abstract]
Derivatives (trading and other liabilities), fair value	0	46
Derivatives (trading liabilities)	0	46
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Asset	1,751	437
Derivatives (trading liabilities)	1,393	402
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Asset	2,109	4,349
Derivatives (trading liabilities)	21,520	1,260
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument | Foreign currency exchange forwards
Derivative Instrument Detail [Abstract]
Derivative Asset	2,886	416
Derivatives (trading liabilities)	134	972
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Not Designated as Hedging Instrument [Member] | Interest rate-related instruments — customer and mirror
Derivative Instrument Detail [Abstract]
Derivative Asset	140,414	62,401
Derivatives (trading liabilities)	294,062	251,398
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Derivative Instrument Detail [Abstract]
Derivative Asset	806	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instrument Detail [Abstract]
Derivatives (trading liabilities)		46
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Not Designated as Hedging Instrument [Member] | Mortgage banking(a)(b)
Derivative Instrument Detail [Abstract]
Derivative Asset	1,213	$ 86
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Not Designated as Hedging Instrument [Member] | Forward Commitments to Sell Residential Mortgage Loans
Derivative Instrument Detail [Abstract]
Derivatives (trading liabilities)	$ 0

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Derivative and Hedging Activities Cumulative Basis Adjustment for Fair Value Hedges (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Balance Sheet Recording of Fair Value Hedge [Line Items]
Carrying amount excluded for foreign currency loans	$ 423,000	$ 429,000
Derivative Financial Instruments, Liabilities [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(1,115,185)	(833,837)
Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	34,815	16,163
Long-Term Debt [Member] | Derivative Financial Instruments, Liabilities [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(537,081)	(248,145)
Long-Term Debt [Member] | Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	12,919	1,855
Federal Home Loan Bank Advances [Member] | Derivative Financial Instruments, Liabilities [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Derivatives (trading liabilities)	(578,103)	(585,692)
Federal Home Loan Bank Advances [Member] | Fair Value Hedging [Member]
Balance Sheet Recording of Fair Value Hedge [Line Items]
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	$ 21,897	$ 14,308

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Derivative and Hedging Activities Income impact of Fair Value and Cash Flow Hedge (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest Income [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ (4,589)	$ (120)	$ (9,286)	$ (428)
Interest Income [Member] | Fair Value Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(74)	(120)	(189)	(428)
Interest Income [Member] | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(4,516)	0	(9,097)	0
Interest Expense
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	5,195	(380)	12,039	(380)
Interest Expense | Fair Value Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(9,001)	(14,703)	(18,652)	(14,703)
Interest Expense | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	14,196	14,323	30,691	14,323
Capital markets, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	0	0	0	0
Capital markets, net | Fair Value Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(11,575)	(29,846)	(2,186)	(40,346)
Capital markets, net | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	$ 11,575	$ 29,846	$ 2,186	$ 40,346

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Derivative and Hedging Activities, Cash Flow Hedge Included in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Cash Flow Hedge Impacts on AOCI [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ (13,592)	$ 0	$ (33,976)	$ 0
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 4,516	$ 0	$ 9,097	$ 0

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Derivative and Hedging Activities Derivative Impact on Perfomance (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Capital markets, net | Interest Rate Related Instruments Customer and Mirror [Member]
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 222	$ (33)	$ 359	$ 533
Capital markets, net | Foreign Exchange Forward [Member]
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	365	709	1,751	1,442
Mortgage banking, net | Interest Rate-Related Instruments - MSRs Hedge
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(5,877)	(3,547)	(5,551)	(12,559)
Mortgage banking, net | Interest Rate Lock Commitments [Member]
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(24)	(1,389)	321	(3,020)
Mortgage banking, net | Forward Contracts [Member]
Derivative instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 470	$ 3,543	$ 853	$ 3,415

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Derivative and Hedging Activities (Details Textuals) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Additional Collateral, Aggregate Fair Value	$ 95,000	$ 92,000
Derivative collateral right to reclaim cash	0	$ 3,000
Derivative Liability Notional Amount, Terminated			$ 500,000
Underlying Hedged Asset, Amortized Cost Basis	292,000
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months	$ 18,000
Maximum Length of Time Hedged in Cash Flow Hedge	38 months
Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Deferred (Gain) Loss on Discontinuation of Fair Value Hedge	$ 1,000

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Balance Sheet Offsetting (Details) - Interest Rate Contract - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivative assets
Gross Amounts Recognized	$ 140,884	$ 63,029
Derivative Liabilities Offset	(1,252)	(2,788)
Derivative Asset, Collateral, Obligation to Return Cash, Offset	(88,207)	(26,898)
Net Amounts Presented on the Consolidated Balance Sheets	51,425	33,342
Gross Amounts Not Offset on the Consolidated Balance Sheets	(32,257)	(30,753)
Derivative Asset, Fair Value, Amount Offset Against Collateral	19,168	2,589
Derivative liabilities
Gross Amounts Recognized	22,964	3,096
Derivative Liability, Fair Value, Gross Asset	(1,252)	(2,788)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	(217)
Net Amounts Presented on the Consolidated Balance Sheets	21,713	91
Gross Amounts Not Offset on the Consolidated Balance Sheets	0	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	$ 21,713	$ 91

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Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters, Summary of Lending Related and Other Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments, Fair Value	$ 0	$ 0
Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale(a)(b)
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments By Type [Domain]	11,228,683	12,444,275
Commercial letters of credit(a)
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments By Type [Domain]	4,067	3,188
Standby letters of credit(c)
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments By Type [Domain]	246,954	270,692
Lines of Credit, Fair Value Disclosure	$ 3,000	$ 3,000

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Commitment, Changes in the Allowance for Unfunded Commitments (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Off-Balance-Sheet, Credit Loss, Liability, Beginning Balance	$ 38,776	$ 39,776
Provision for credit losses	(4,000)	(1,000)
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	$ 34,776	$ 38,776

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Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters (Details Textuals) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Expense Related to Qualified Affordable Housing Projects	$ 9,000,000	$ 9,000,000	$ 26,000,000	$ 25,000,000
Remaining Investment in Qualified Affordable Housing Projects	219,000,000		219,000,000		$ 246,000,000
Variable Interest Entity Reporting Entity Involvement Unfunded Obligation Amount	27,000,000		27,000,000		40,000,000
Qualified Affordable Housing Investments, Impairment Loss			0		0
Loans Repurchased Under Make Whole Requests	5,000,000		$ 5,000,000		6,000,000
Loans Sold To Outside Investors Loss ReimbursementSettlement Paid					0
Make Whole Requests, Loan Origination Date, Majority			Jan. 01, 2020
Loans Sold To Outside Investors Original Amount	4,600,000,000		$ 4,600,000,000
Loans Sold To Outside Investors Remaining Outstanding Amount	3,300,000,000		3,300,000,000
Mortgage Repurchase Reserve	680,000		680,000		1,000,000
Residential Mortgage Loans Sold With Recourse Risk	15,000,000		15,000,000		7,000,000
Residential Mortgage Loans Sold With Credit Recourse Risk	17,000,000		17,000,000		19,000,000
Residential Mortgage Loans with Credit Risk Recourse	0		0		0
UnconsolidatedProjectsLowIncomeHousing [Member]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Other Investments	222,000,000		222,000,000		250,000,000
PrincipalInvestmentCommitment [Member]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]
Other Investments	$ 34,000,000		$ 34,000,000		$ 27,000,000

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Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	$ 3,491,679	$ 2,742,025
Equity securities with readily determinable fair values, Fair Value	7,000	6,000
Mortgage servicing rights, net	89,131	77,351	$ 57,158
Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	109,024	109,378
Equity securities with readily determinable fair values, Fair Value	6,701	5,991
Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	3,382,655	2,632,647
Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Mortgage servicing rights, net	89,131	77,351
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	0	46
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument
Assets, Fair Value Disclosure [Abstract]
Interest Rate Fair Value Hedge Asset at Fair Value	2,109	4,349
Foreign Currency Contract, Asset, Fair Value Disclosure	2,886	416
Liabilities, Fair Value Disclosure [Abstract]
Interest Rate Fair Value Hedge Liability at Fair Value	21,520	1,260
Foreign Currency Contracts, Liability, Fair Value Disclosure	134	972
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Trading assets	806	0
Mortgage servicing rights, net	89,131	77,351
Interest rate-related instruments — customer and mirror | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument
Assets, Fair Value Disclosure [Abstract]
Trading assets	2,109	4,349
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	21,520	1,260
Interest rate-related instruments — customer and mirror | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Not Designated as Hedging Instrument [Member]
Assets, Fair Value Disclosure [Abstract]
Trading assets	140,414	62,401
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	294,062	251,398
Foreign Exchange Forward [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Trading assets	1,751	437
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	1,393	402
Foreign Exchange Forward [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated as Hedging Instrument
Assets, Fair Value Disclosure [Abstract]
Trading assets	2,886	416
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	134	972
Forward Commitments to Sell Residential Mortgage Loans | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities		46
Forward Commitments to Sell Residential Mortgage Loans | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Not Designated as Hedging Instrument [Member]
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	0
US Treasury Securities
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	109,024	109,378
US Treasury Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	109,024	109,378
Agency Securities
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	13,590	13,532
Agency Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	13,590	13,532
US States and Political Subdivisions Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	210,317	230,714
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	210,317	230,714
Residential Related Securities | FNMA/FHLMC
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	1,436,759	1,604,610
Residential Related Securities | FNMA/FHLMC | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	1,436,759	1,604,610
Residential Related Securities | Government National Mortgage Association (GNMA) [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	1,384,670	497,596
Residential Related Securities | Government National Mortgage Association (GNMA) [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	1,384,670	497,596
Commercial mortgage-related securities | FNMA/FHLMC
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	16,154	17,142
Commercial mortgage-related securities | FNMA/FHLMC | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	16,154	17,142
Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	176,474	110,462
Commercial mortgage-related securities | Government National Mortgage Association (GNMA) [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	176,474	110,462
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	138,514	151,191
Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	138,514	151,191
US Government-sponsored Enterprises Debt Securities [Member]
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	3,261	4,477
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	3,261	4,477
Other Debt securities
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	2,915	2,922
Other Debt securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	2,915	2,922
Available-for-sale Securities [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	109,024	109,378
Available-for-sale Securities [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
AFS investment securities, at fair value	3,382,655	2,632,647
Other Debt And Other Equity Securities | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Assets, Fair Value Disclosure [Abstract]
Equity securities with readily determinable fair values, Fair Value	6,701	5,991
Residential loans held for sale | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Assets, Fair Value Disclosure [Abstract]
Trading assets	54,790	20,383
Mortgage banking(a)(b) | Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Trading assets	407	86
Mortgage banking(a)(b) | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Assets, Fair Value Disclosure [Abstract]
Trading assets	407	$ 86
Forward Commitments to Sell Residential Mortgage Loans | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Liabilities, Fair Value Disclosure [Abstract]
Trading liabilities	$ 0

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Fair Value Measurements Financial Instruments Classified Within Level 3 (Details) - Fair Value, Inputs, Level 3 - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Interest rate lock commitments to originate residential mortgage loans held for sale
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	$ 86	$ 2,617
New production	4,681	10,442
Closed loans / settlements	(2,417)	(913)
Other	(1,943)	(12,060)
Change in mortgage derivative	321	(2,531)
Ending Balance	407	86
Derivative Financial Instruments, Liabilities [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	46	(30)
New production	(1,274)	(2,028)
Closed loans / settlements	1,969	24,766
Other	(1,547)	(22,662)
Change in mortgage derivative	(853)	76
Ending Balance	(806)	46
Total derivatives
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning Balance	40	2,647
New production	5,955	12,470
Closed loans / settlements	(4,386)	(25,679)
Other	(396)	10,603
Change in mortgage derivative	1,173	(2,607)
Ending Balance	$ 1,213	$ 40

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Fair Value Measurements Equity Securities Without Readily Determinable Fair Values (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Equity Securities Without Readily Determinable Fair Value Amount [Roll Forward]
Carrying value as of December 31, 2022	$ 19,225
Carrying value changes	0	$ 5,690
Purchases	10,011
Carrying value as of September 30, 2023	29,236
Cumulative upward carrying value changes between January 1, 2018 and September 30, 2023	19,134
Cumulative downward carrying value changes/impairment between January 1, 2018 and September 30, 2023	$ 0

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Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity Securities without Readily Determinable Fair Value, Amount	$ 29,236	$ 19,225
Equity Securities, FV-NI and without Readily Determinable Fair Value	35,937	25,216
Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Equity Securities without Readily Determinable Fair Value, Amount	19,236	19,225
Equity Securities, FV-NI and without Readily Determinable Fair Value	19,236	19,225
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
Individually evaluated loans	56,506	23,584
Provision for credit losses	28,926	4,405
Equity Securities without Readily Determinable Fair Value, Amount		19,134
Equity Securities, FV-NI and without Readily Determinable Fair Value		5,690
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Write-down or Reserve, Amount	1,124	971
OREO(b)	$ 1,315	$ 2,196

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Fair Value Measurements Fair Value Unobservable Level 3 Measurements (Details) - Fair Value, Inputs, Level 3	9 Months Ended
	Sep. 30, 2023
Discounted Cash Flow | Mortgage Servicing Rights | Minimum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	6.00%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	0.00%
Discounted Cash Flow | Mortgage Servicing Rights | Maximum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	8.00%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	100.00%
Discounted Cash Flow | Mortgage Servicing Rights | Weighted Average [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	6.00%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	6.00%
Discounted Cash Flow | Mortgage banking(a)(b) | Minimum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	48.00%
Discounted Cash Flow | Mortgage banking(a)(b) | Maximum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	100.00%
Discounted Cash Flow | Mortgage banking(a)(b) | Weighted Average [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	84.00%
Appraisals/Discounted Cash Flow | Impaired Finance Receivable | Minimum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	22.00%
Appraisals/Discounted Cash Flow | Impaired Finance Receivable | Maximum
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	36.00%
Appraisals/Discounted Cash Flow | Impaired Finance Receivable | Weighted Average [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate	34.00%

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Fair Value Measurements, Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Financial assets
Available-for-sale Securities	$ 3,491,679	$ 2,742,025
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,900,483	3,960,451
Investment securities held to maturity, fair value	3,145,898	3,401,018
Equity securities with readily determinable fair values, Fair Value	7,000	6,000
Equity Securities without Readily Determinable Fair Value, Amount	29,236	19,225
Equity Securities, FV-NI and without Readily Determinable Fair Value	35,937	25,216
FHLB and Federal Reserve Bank stocks	268,698	295,496
Residential loans held for sale	54,790	20,383
Mortgage servicing rights, net	89,131	77,351	$ 57,158
Financial liabilities
Short-term funding	451,644	605,937
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	3,733,041	4,319,861
Standby letters of credit(c)
Financial liabilities
Standby letters of credit, fair value	3,000	3,000
Lending Related Commitments By Type [Domain]	246,954	270,692
Fair Value, Inputs, Level 1
Financial assets
Cash and due from banks	388,694	436,952
Interest-bearing deposits in other financial institutions	323,130	156,693
Federal funds sold and securities purchased under agreements to resell	965	27,810
Available-for-sale Securities	109,024	109,378
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	999	999
Investment securities held to maturity, fair value	948	936
Equity securities with readily determinable fair value, Carrying Amount	6,701	5,991
Equity securities with readily determinable fair values, Fair Value	6,701	5,991
Fair Value, Inputs, Level 2
Financial assets
Available-for-sale Securities	3,382,655	2,632,647
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss	3,899,416	3,959,399
Investment securities held to maturity, fair value	3,144,883	3,400,028
Bank owned life insurance, fair value	679,775	676,530
Financial liabilities
Brokered CDs and other time deposits	6,066,937	1,930,158
Brokered CDs and other time deposits, fair value	6,066,937	1,930,158
Short-term funding	451,644	605,937
Short-term funding, fair value	451,624	605,205
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	3,733,041	4,319,861
Advances, Fair Value Disclosure	3,734,775	4,322,264
Other long-term funding	529,459	248,071
Long-term funding, fair value	519,337	242,151
Standby letters of credit	2,691	2,881
Standby letters of credit, fair value	2,691	2,881
Fair Value, Inputs, Level 2 | Other Assets [Member]
Financial assets
Derivative Asset	147,160	67,603
Derivatives (trading and other assets), fair value	147,160	67,603
Fair Value, Inputs, Level 2 | Other Liabilities [Member]
Financial liabilities
Derivatives (trading liabilities)	317,109	254,033
Derivatives (trading and other liabilities), fair value	317,109	254,033
Fair Value, Inputs, Level 3
Financial assets
Equity Securities without Readily Determinable Fair Value, Amount	19,236	19,225
Equity Securities, FV-NI and without Readily Determinable Fair Value	19,236	19,225
Loans, net	29,847,392	28,486,849
Loans, net, fair value	28,705,298	27,481,426
Servicing Asset	89,131	77,351
Mortgage servicing rights, net	89,131	77,351
Financial liabilities
Noninterest-bearing demand, savings, interest-bearing demand, and money market accounts	26,056,389	27,705,996
Noninterest-bearing demand, savings, interest-bearing demand, and money market deposits, fair value	26,056,389	27,705,996
Derivatives (trading liabilities)	0	46
Derivatives (trading and other liabilities), fair value	0	46
Fair Value, Inputs, Level 3 | Mortgage banking(a)(b)
Financial assets
Derivative Asset	407	86
Fair Value, Inputs, Level 3 | Forward commitments (mortgage)
Financial assets
Derivative Asset	806	0
Fair Value, Inputs, NAV
Financial assets
Equity Securities without Readily Determinable Fair Value, Amount	10,000	0
Equity Securities, FV-NI and without Readily Determinable Fair Value	$ 10,000	$ 0

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Retirement Plans, Components of Net Periodic Benefit Cost for the Pension and Postretirement Tables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
RAP
Net period benefit cost for the pension and postretirement plans
Defined Benefit Plan, Description			The Corporation has a noncontributory defined benefit RAP, covering substantially all employees who meet participation requirements. The benefits are based primarily on years of service and the employee’s compensation paid. Employees of acquired entities generally participate in the RAP after consummation of the business combinations. Any retirement plans of acquired entities are typically merged into the RAP after completion of the mergers, and credit is usually given to employees for years of service at the acquired institution for vesting and eligibility purposes.
Service cost	$ 800	$ 906	$ 2,392	$ 2,752
Interest cost	2,794	1,820	8,165	5,364
Expected return on plan assets	(8,243)	(6,706)	(24,647)	(20,177)
Amortization of prior service cost	(63)	(63)	(188)	(188)
Amortization of actuarial loss	0	347	37	494
Total net periodic pension cost	(4,713)	(3,696)	(14,241)	(11,754)
Postretirement Plan
Net period benefit cost for the pension and postretirement plans
Interest cost	20	13	59	40
Amortization of prior service cost	(19)	(19)	(56)	(56)
Amortization of actuarial loss	(7)	0	(22)	0
Total net periodic pension cost	$ (6)	$ (6)	$ (19)	$ (17)

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Retirement Plans (Details Textuals) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
RAP
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 0	$ 0

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Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Income Statement Data Abstract
Net interest income	$ 254,244			$ 264,439			$ 786,171	$ 668,332
Net intersegment interest (expense)	0			0			0	0
Segment net interest income	254,244			264,439			786,171	668,332
Noninterest income	66,579			70,788			194,195	220,713
Total revenue	320,823			335,227			980,366	889,045
Provision for credit losses	21,943			16,998			62,014	13,006
Noninterest expense	196,205			195,791			574,291	550,503
Income before income taxes	102,674			122,438			344,061	325,536
Income tax expense (benefit)	19,426			26,163			70,299	68,176
Net income	83,248	$ 87,154	$ 103,360	96,275	$ 86,824	$ 74,262	273,762	257,360
Segment Balance Sheet Data
Allocated goodwill							1,104,992	1,104,992
Operating Segments | Corporate and Commercial Specialty
Segment Income Statement Data Abstract
Net interest income	250,365			161,143			710,031	363,135
Net intersegment interest (expense)	(106,675)			(40,117)			(288,366)	(36,893)
Segment net interest income	143,690			121,026			421,665	326,242
Noninterest income	34,081			35,663			99,243	112,620
Total revenue	177,771			156,688			520,908	438,862
Provision for credit losses	14,066			11,904			41,523	36,803
Noninterest expense	63,207			58,934			186,351	172,141
Income before income taxes	100,498			85,851			293,034	229,918
Income tax expense (benefit)	19,304			15,967			54,138	42,248
Net income	81,194			69,884			238,897	187,670
Segment Balance Sheet Data
Allocated goodwill							525,836	525,836
Operating Segments | Community, Consumer, and Business
Segment Income Statement Data Abstract
Net interest income	67,139			87,156			219,883	233,699
Net intersegment interest (expense)	123,900			49,437			317,820	98,907
Segment net interest income	191,039			136,593			537,703	332,606
Noninterest income	29,675			26,745			85,881	92,072
Total revenue	220,714			163,338			623,584	424,679
Provision for credit losses	7,381			5,378			21,467	14,958
Noninterest expense	108,185			107,860			328,960	311,423
Income before income taxes	105,148			50,100			273,158	98,298
Income tax expense (benefit)	22,187			10,521			57,469	20,642
Net income	82,961			39,579			215,688	77,655
Segment Balance Sheet Data
Allocated goodwill							579,156	579,156
Operating Segments | Risk Management and Shared Services
Segment Income Statement Data Abstract
Net interest income	(63,260)			16,140			(143,743)	71,498
Net intersegment interest (expense)	(17,225)			(9,320)			(29,454)	(62,014)
Segment net interest income	(80,485)			6,820			(173,197)	9,484
Noninterest income	2,823			8,381			9,071	16,021
Total revenue	(77,663)			15,201			(164,126)	25,505
Provision for credit losses	496			(283)			(975)	(38,756)
Noninterest expense	24,814			28,997			58,980	66,940
Income before income taxes	(102,972)			(13,513)			(222,131)	(2,679)
Income tax expense (benefit)	(22,065)			(325)			(41,308)	5,286
Net income	$ (80,907)			$ (13,189)			(180,823)	(7,965)
Segment Balance Sheet Data
Allocated goodwill							$ 0	$ 0

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Segment Reporting (Details Textuals)	9 Months Ended
	Sep. 30, 2023 segment
Segment Reporting [Abstract]
Number of Reportable Segments	3

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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance			$ (272,799)				$ (272,799)
Investment securities losses (gains), net	$ 0			$ 0			0	$ (8)
HTM investment securities, net, at amortized cost	(2,327)			(2,888)			(6,883)	(7,269)
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(13,592)			0			(33,976)	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	4,516			0			9,097	0
Personnel expense	(117,159)			(118,243)			(347,669)	(335,720)
Net other comprehensive loss during period	(47,497)	$ (58,054)	39,211	(72,603)	$ (45,764)	$ (126,708)	(66,340)	(245,074)
Ending Balance	(339,140)						(339,140)
AFS Investment Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(239,273)		(233,192)	(177,726)		(5,266)	(233,192)	(5,266)
Other comprehensive (loss) before reclassifications	(56,924)			(100,092)			(69,512)	(268,413)
Unrealized gains (losses) on AFS securities transferred to HTM securities								(67,604)
Investment securities losses (gains), net								(12)
HTM investment securities, net, at amortized cost	2,327			2,888			6,883	7,269
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0						0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0						0
Personnel expense	0			0			0	0
Other expense	0			0			0	0
Income tax benefit	13,928			24,810			15,879	83,906
Net other comprehensive loss during period	(40,669)			(72,394)			(46,751)	(244,854)
Ending Balance	(279,943)	(239,273)		(250,120)	(177,726)		(279,943)	(250,120)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(9,270)		3,360	0		0	3,360	0
Other comprehensive (loss) before reclassifications	0			0			0	0
Unrealized gains (losses) on AFS securities transferred to HTM securities								0
Investment securities losses (gains), net								0
HTM investment securities, net, at amortized cost	0			0			0	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(13,592)						(33,976)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	4,516						9,097
Personnel expense	0			0			0	0
Other expense	0			0			0	0
Income tax benefit	2,315			0			5,488	0
Net other comprehensive loss during period	(6,762)			0			(19,391)	0
Ending Balance	(16,032)	(9,270)		0	0		(16,032)	0
Defined Benefit Pension and Postretirement Obligations
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(43,099)		(42,968)	(5,062)		(5,051)	(42,968)	(5,051)
Other comprehensive (loss) before reclassifications	0			0			0	0
Unrealized gains (losses) on AFS securities transferred to HTM securities								0
Investment securities losses (gains), net								0
HTM investment securities, net, at amortized cost	0			0			0	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0						0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0						0
Personnel expense	(81)			(82)			(244)	(244)
Other expense	(7)			347			15	494
Income tax benefit	23			(474)			31	(470)
Net other comprehensive loss during period	(66)			(209)			(198)	(221)
Ending Balance	(43,166)	(43,099)		(5,272)	(5,062)		(43,166)	(5,272)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(291,642)		(272,799)	(182,788)		(10,317)	(272,799)	(10,317)
Other comprehensive (loss) before reclassifications	(56,924)			(100,092)			(69,512)	(268,413)
Unrealized gains (losses) on AFS securities transferred to HTM securities								(67,604)
Investment securities losses (gains), net								(12)
HTM investment securities, net, at amortized cost	2,327			2,888			6,883	7,269
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(13,592)						(33,976)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	4,516						9,097
Personnel expense	(81)			(82)			(244)	(244)
Other expense	(7)			347			15	494
Income tax benefit	16,266			24,336			21,398	83,436
Net other comprehensive loss during period	(47,497)	(58,054)	$ 39,211	(72,603)	(45,764)	$ (126,708)	(66,340)	(245,074)
Ending Balance	$ (339,140)	$ (291,642)		$ (255,391)	$ (182,788)		$ (339,140)	$ (255,391)

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Leases Lease, Cost and Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Operating lease costs	$ 1,594	$ 1,637	$ 4,536	$ 5,361
Finance lease costs	23	23	69	96
Operating lease cash flows	1,917	1,880	5,442	6,614
Finance lease cash flows	$ 23	$ 22	$ 69	$ 103

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Leases Components of Lease Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease right-of-use asset	$ 23,677	$ 25,617
Finance lease right-of-use asset	390	455
Operating lease liability	26,059	28,357
Finance lease liability	$ 405	$ 469

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Leases Operating Lease Information (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, to be Paid	$ 28,325	$ 30,906
Operating Lease, Weighted Average Remaining Lease Term	5 years 7 months 20 days	6 years 2 months 1 day
Operating Lease, Weighted Average Discount Rate, Percent	2.93%	2.70%
Finance Lease, Liability, Payment, Due	$ 417	$ 485
Finance Lease, Weighted Average Remaining Lease Term	4 years 6 months	5 years 3 months
Finance Lease, Weighted Average Discount Rate, Percent	1.32%	1.32%
Equipment
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, to be Paid	$ 408	$ 0
Operating Lease, Weighted Average Remaining Lease Term	2 years 9 months	0 years
Operating Lease, Weighted Average Discount Rate, Percent	4.62%	0.00%
Retail and corporate offices
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, to be Paid	$ 23,662	$ 26,140
Operating Lease, Weighted Average Remaining Lease Term	5 years 5 months 8 days	5 years 11 months 1 day
Operating Lease, Weighted Average Discount Rate, Percent	2.81%	2.62%
Finance Lease, Liability, Payment, Due	$ 417	$ 485
Finance Lease, Weighted Average Remaining Lease Term	4 years 6 months	5 years 3 months
Finance Lease, Weighted Average Discount Rate, Percent	1.32%	1.32%
Land
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, to be Paid	$ 4,255	$ 4,766
Operating Lease, Weighted Average Remaining Lease Term	7 years 1 month 9 days	7 years 7 months 2 days
Operating Lease, Weighted Average Discount Rate, Percent	3.47%	3.14%

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Leases Amortization of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Operating Leases
Three months ended December 31, 2023	$ 1,509
2024	6,124
2025	5,223
2026	4,672
2027	4,014
Beyond 2027	6,782
Total lease payments	28,325	$ 30,906
Less: interest	2,266
Present value of lease payments	26,059	28,357
Finance Leases
Three months ended December 31, 2023	23
2024	93
2025	93
2026	93
2027	93
Beyond 2027	23
Total lease payments	417	485
Less: interest	12
Present value of lease payments	405	$ 469
Total Leases
Three months ended December 31, 2023	1,532
2024	6,217
2025	5,315
2026	4,765
2027	4,107
Beyond 2027	6,805
Total lease payments	28,742
Less: interest	2,278
Present value of lease payments	$ 26,464

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Leases (Details Textuals) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Additional operating leases	$ 4	$ 13
Minimum
Lessee, Lease, Description [Line Items]
Operating lease terms	1 year
Additional operating lease terms	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease terms	39 years
Additional operating lease terms	6 years