Old National Bancorp (ONB) 10-Q 2 Aug 23 2023 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2023	Jul. 31, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-15817
Entity Registrant Name	Old National Bancorp
Entity Incorporation, State or Country Code	IN
Entity Tax Identification Number	35-1539838
Entity Address, Address Line One	One Main Street
Entity Address, City or Town	Evansville,
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	47708
City Area Code	(800)
Local Phone Number	731-2265
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		292,589,000
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000707179
Current Fiscal Year End Date	--12-31
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common stock, no par value
Trading Symbol	ONB
Security Exchange Name	NASDAQ
Depositary Shares, each representing a 1/40th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series A
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/40th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series A
Trading Symbol	ONBPP
Security Exchange Name	NASDAQ
Depositary Shares, each representing a 1/40th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series C
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/40th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series C
Trading Symbol	ONBPO
Security Exchange Name	NASDAQ

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 473,023	$ 453,432
Money market and other interest-earning investments	724,863	274,980
Total cash and cash equivalents	1,197,886	728,412
Equity securities, at fair value	71,953	52,507
Investment securities - available-for-sale, at fair value (amortized cost $7,551,258 and $7,772,603, respectively)	6,500,515	6,773,712
Investment securities - held-to-maturity, at amortized cost (fair value $2,603,058 and $2,643,682, respectively)	3,054,997	3,089,147
Federal Home Loan Bank/Federal Reserve Bank stock, at cost	413,326	314,168
Loans held for sale, at fair value	114,369	11,926
Loans:
Total loans	32,432,473	31,123,641
Allowance for credit losses on loans	(300,555)	(303,671)
Net loans	32,131,918	30,819,970
Premises and equipment, net	564,299	557,307
Operating lease right-of-use assets	184,700	189,714
Accrued interest receivable	205,198	190,521
Goodwill	1,998,716	1,998,716
Other intangible assets	114,159	126,405
Company-owned life insurance	771,753	768,552
Other assets	1,172,966	1,142,315
Total assets	48,496,755	46,763,372
Deposits:
Noninterest-bearing demand	10,532,838	11,930,798
Interest-bearing:
Checking and NOW	7,654,202	8,340,955
Savings	5,578,323	6,326,158
Money market	7,200,288	5,389,139
Time deposits	5,265,664	3,013,780
Total deposits	36,231,315	35,000,830
Federal funds purchased and interbank borrowings	136,060	581,489
Securities sold under agreements to repurchase	311,447	432,804
Federal Home Loan Bank advances	4,771,183	3,829,018
Other borrowings	815,318	743,003
Operating lease liabilities	206,178	211,964
Accrued expenses and other liabilities	733,159	835,669
Total liabilities	43,204,660	41,634,777
Shareholders' Equity
Preferred stock, 2,000 shares authorized, 231 shares issued and outstanding	230,500	230,500
Common stock, no par value, $1.00 per share stated value, 600,000 shares authorized,    292,597 and 292,903 shares issued and outstanding, respectively	292,597	292,903
Capital surplus	4,149,089	4,174,265
Retained earnings	1,428,542	1,217,349
Accumulated other comprehensive income (loss), net of tax	(808,633)	(786,422)
Total shareholders' equity	5,292,095	5,128,595
Total liabilities and shareholders' equity	48,496,755	46,763,372
Commercial
Loans:
Total loans	9,698,241	9,508,904
Allowance for credit losses on loans	(127,403)	(120,612)
Commercial real estate
Loans:
Total loans	13,450,209	12,457,070
Allowance for credit losses on loans	(136,897)	(138,244)
Residential real estate
Loans:
Total loans	6,684,480	6,460,441
Allowance for credit losses on loans	(20,421)	(21,916)
Consumer credit, net of unearned income
Loans:
Total loans	$ 2,599,543	$ 2,697,226

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Investment securities-available-for-sale, fair value	$ 7,551,258	$ 7,772,603
Investment securities - held-to-maturity, fair value	$ 2,603,058	$ 2,643,682
Preferred stock, shares authorized (in shares)	2,000	2,000
Preferred stock, shares issued (in shares)	231	231
Preferred stock, shares outstanding (in shares)	231	231
Common stock, stated value (in dollars per share)	$ 1	$ 1
Authorized and unissued common shares reserved for issuance (in shares)	600,000	600,000
Common stock, shares issued (in shares)	292,597	292,903
Common stock, shares outstanding (in shares)	292,597	292,903

Consolidated Statements of Inco

Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Loans including fees:
Taxable	$ 449,896	$ 285,249	$ 860,271	$ 469,264
Nontaxable	10,925	4,802	21,137	8,309
Investment securities:
Taxable	64,072	51,459	124,873	88,868
Nontaxable	11,043	11,018	22,206	21,284
Money market and other interest-earning investments	8,966	1,830	12,064	2,138
Total interest income	544,902	354,358	1,040,551	589,863
Interest Expense
Deposits	100,974	5,187	163,567	8,381
Federal funds purchased and interbank borrowings	5,655	2	10,494	2
Securities sold under agreements to repurchase	900	85	1,679	181
Federal Home Loan Bank advances	45,088	6,925	83,084	12,888
Other borrowings	10,114	4,687	18,068	8,154
Total interest expense	162,731	16,886	276,892	29,606
Net interest income	382,171	337,472	763,659	560,257
Provision for credit losses	14,787	9,165	28,224	117,901
Net interest income after provision for credit losses	367,384	328,307	735,435	442,356
Noninterest Income
Wealth and investment services fees	26,521	27,872	53,441	49,824
Service charges on deposit accounts	17,751	20,324	34,754	34,350
Debit card and ATM fees	10,653	11,222	20,635	18,821
Mortgage banking revenue	4,165	6,522	7,565	13,767
Capital markets income	6,173	7,261	13,112	11,703
Company-owned life insurance	4,698	4,571	7,884	8,095
Debt securities gains (losses), net	17	(85)	(5,199)	257
Other income	11,651	11,430	20,118	17,540
Total noninterest income	81,629	89,117	152,310	154,357
Noninterest Expense
Salaries and employee benefits	135,810	161,817	273,174	285,964
Occupancy	26,085	26,496	54,367	47,515
Equipment	7,721	7,550	15,110	12,718
Marketing	9,833	9,119	19,250	13,395
Technology	20,056	25,883	39,258	44,645
Communication	4,232	5,878	8,693	9,295
Professional fees	6,397	6,336	13,129	26,127
FDIC assessment	9,624	4,699	20,028	7,274
Amortization of intangibles	6,060	7,170	12,246	11,981
Amortization of tax credit investments	2,762	1,525	5,523	3,041
Property optimization	242	0	1,559	0
Other expense	17,762	21,002	34,958	31,109
Total noninterest expense	246,584	277,475	497,295	493,064
Income before income taxes	202,429	139,949	390,450	103,649
Income tax expense	47,393	24,964	88,814	16,250
Net income	155,036	114,985	301,636	87,399
Preferred dividends	(4,033)	(4,033)	(8,067)	(6,050)
Net income applicable to common shareholders	$ 151,003	$ 110,952	$ 293,569	$ 81,349
Net income per common share - basic (in dollars per share)	$ 0.52	$ 0.38	$ 1.01	$ 0.31
Net income per common share - diluted (in dollars per share)	$ 0.52	$ 0.38	$ 1.01	$ 0.31
Weighted average number of common shares outstanding - basic (in shares)	290,559	290,862	290,822	259,108
Weighted average number of common shares outstanding - diluted (in shares)	291,266	291,881	291,870	260,253
Dividends per common share (in dollars per share)	$ 0.14	$ 0.14	$ 0.28	$ 0.28

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 155,036	$ 114,985	$ 301,636	$ 87,399
Change in debt securities available-for-sale:
Unrealized holding gains (losses) for the period	(120,159)	(304,514)	(95,435)	(733,984)
Reclassification for securities transferred to held-to-maturity	0	143,310	0	165,473
Reclassification adjustment for securities (gains) losses realized in income	(17)	85	5,199	(257)
Income tax effect	30,043	38,408	31,189	134,643
Unrealized gains (losses) on available-for-sale securities	(90,133)	(122,711)	(59,047)	(434,125)
Change in securities held-to-maturity:
Adjustment for securities transferred from available-for-sale	0	(143,310)	0	(165,473)
Amortization of unrealized losses on securities transferred     from available-for-sale	5,122	3,692	10,951	4,002
Income tax effect	(1,300)	34,146	(1,431)	39,272
Changes from securities held-to-maturity	3,822	(105,472)	9,520	(122,199)
Change in hedges:
Net unrealized derivative gains (losses) on hedges	13,272	(3,418)	61,121	(12,924)
Reclassification adjustment for (gains) losses realized in net income	(32,112)	(219)	(24,820)	(888)
Income tax effect	4,872	894	(8,848)	3,394
Changes from hedges	(13,968)	(2,743)	27,453	(10,418)
Change in defined benefit pension plans:
Amortization of net (gains) losses recognized in income	6	(10)	(182)	(21)
Income tax effect	(2)	2	45	5
Changes from defined benefit pension plans	4	(8)	(137)	(16)
Other comprehensive income (loss), net of tax	(100,275)	(230,934)	(22,211)	(566,758)
Comprehensive income (loss)	$ 54,761	$ (115,949)	$ 279,425	$ (479,359)

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period at Dec. 31, 2021	$ 3,012,018	$ 0	$ 165,838	$ 1,880,545	$ 968,010	$ (2,375)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(27,586)				(27,586)
Other comprehensive income (loss)	(335,824)					(335,824)
First Midwest Bancorp, Inc. merger:
Issuance of common stock	2,446,312		129,365	2,316,947
Issuance of preferred stock, net of issuance costs	243,719	230,500		13,219
Cash dividends:
Dividends - common stock	(40,782)				(40,782)
Preferred dividends	(2,017)				(2,017)
Common stock issued	165		10	155
Common stock repurchased	(70,078)		(3,890)	(66,188)
Share-based compensation expense	6,284			6,284
Stock activity under incentive compensation plans	(97)		1,636	(1,368)	(365)
Balance at end of period at Mar. 31, 2022	5,232,114	230,500	292,959	4,149,594	897,260	(338,199)
Balance at beginning of period at Dec. 31, 2021	3,012,018	0	165,838	1,880,545	968,010	(2,375)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	87,399
Other comprehensive income (loss)	(566,758)
First Midwest Bancorp, Inc. merger:
Issuance of common stock	2,446,312	243,870
Balance at end of period at Jun. 30, 2022	5,078,783	230,500	292,893	4,157,543	966,980	(569,133)
Balance at beginning of period at Mar. 31, 2022	5,232,114	230,500	292,959	4,149,594	897,260	(338,199)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	114,985				114,985
Other comprehensive income (loss)	(230,934)					(230,934)
Cash dividends:
Dividends - common stock	(40,901)				(40,901)
Preferred dividends	(4,033)				(4,033)
Common stock issued	162		10	152
Common stock repurchased	(322)		(21)	(301)
Share-based compensation expense	7,813			7,813
Stock activity under incentive compensation plans	(101)		(55)	285	(331)
Balance at end of period at Jun. 30, 2022	5,078,783	230,500	292,893	4,157,543	966,980	(569,133)
Balance at beginning of period at Dec. 31, 2022	5,128,595	230,500	292,903	4,174,265	1,217,349	(786,422)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	146,600				146,600
Other comprehensive income (loss)	78,064					78,064
Cash dividends:
Dividends - common stock	(41,088)				(41,088)
Preferred dividends	(4,034)				(4,034)
Common stock issued	262		15	247
Common stock repurchased	(43,710)		(2,598)	(41,112)
Share-based compensation expense	12,742			12,742
Stock activity under incentive compensation plans	(5)		1,602	(1,412)	(195)
Balance at end of period at Mar. 31, 2023	5,277,426	230,500	291,922	4,144,730	1,318,632	(708,358)
Balance at beginning of period at Dec. 31, 2022	5,128,595	230,500	292,903	4,174,265	1,217,349	(786,422)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	301,636
Other comprehensive income (loss)	(22,211)
First Midwest Bancorp, Inc. merger:
Issuance of common stock	0	0
Balance at end of period at Jun. 30, 2023	5,292,095	230,500	292,597	4,149,089	1,428,542	(808,633)
Balance at beginning of period at Mar. 31, 2023	5,277,426	230,500	291,922	4,144,730	1,318,632	(708,358)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	155,036				155,036
Other comprehensive income (loss)	(100,275)					(100,275)
Cash dividends:
Dividends - common stock	(40,932)				(40,932)
Preferred dividends	(4,033)				(4,033)
Common stock issued	272		20	252
Common stock repurchased	(105)		(8)	(97)
Share-based compensation expense	5,247			5,247
Stock activity under incentive compensation plans	(541)		663	(1,043)	(161)
Balance at end of period at Jun. 30, 2023	$ 5,292,095	$ 230,500	$ 292,597	$ 4,149,089	$ 1,428,542	$ (808,633)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Stockholders' Equity [Abstract]
Dividends per common share (in dollars per share)	$ 0.14	$ 0.14	$ 0.14	$ 0.14	$ 0.28	$ 0.28

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash Flows From Operating Activities
Net income	$ 301,636	$ 87,399
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	18,386	17,742
Amortization of other intangible assets	12,246	11,981
Amortization of tax credit investments	5,523	3,041
Net premium amortization on investment securities	7,061	9,413
Accretion income related to acquired loans	(11,485)	(44,083)
Share-based compensation expense	17,989	14,097
Provision for credit losses	28,224	117,901
Debt securities (gains) losses, net	5,199	(257)
Net (gains) losses on sales of loans and other assets	(45)	(4,010)
Increase in cash surrender value of company-owned life insurance	(7,884)	(8,095)
Residential real estate loans originated for sale	(225,753)	(364,018)
Proceeds from sales of residential real estate loans	218,253	395,829
(Increase) decrease in interest receivable	(14,677)	(19,468)
(Increase) decrease in other assets	(38,540)	127,991
Increase (decrease) in accrued expenses and other liabilities	(101,417)	93,369
Net cash flows provided by (used in) operating activities	214,716	438,832
Cash Flows From Investing Activities
Cash received from merger, net	0	1,912,629
Purchases of investment securities available-for-sale	(174,657)	(1,276,205)
Purchases of investment securities held-to-maturity	(1,941)	(117,141)
Purchases of Federal Home Loan Bank/Federal Reserve Bank stock	(99,159)	(97,359)
Purchases of equity securities	(20,820)	(1,417)
Proceeds from maturities, prepayments, and calls of investment securities available-for-sale	333,937	659,922
Proceeds from sales of investment securities available-for-sale	51,654	12,742
Proceeds from maturities, prepayments, and calls of investment securities held-to-maturity	45,193	30,744
Proceeds from sales of Federal Home Loan Bank/Federal Reserve Bank stock	1	83,947
Proceeds from sales of equity securities	1,726	49,709
Loan originations and payments, net	(1,708,291)	(1,524,289)
Proceeds from sales of commercial loans	291,368	0
Proceeds from company-owned life insurance death benefits	4,888	2,849
Proceeds from sales of premises and equipment and other assets	2,369	2,751
Purchases of premises and equipment and other assets	(17,410)	(17,459)
Net cash flows provided by (used in) investing activities	(1,291,142)	(278,577)
Net increase (decrease) in:
Deposits	1,230,485	(279,624)
Federal funds purchased and interbank borrowings	(445,429)	1,285
Securities sold under agreements to repurchase	(121,357)	(51,296)
Other borrowings	65,719	53,136
Payments for maturities of Federal Home Loan Bank advances	(1,650,150)	(1,100,005)
Proceeds from Federal Home Loan Bank advances	2,600,000	1,350,000
Cash dividends paid	(90,087)	(87,733)
Common stock repurchased	(43,815)	(70,400)
Common stock issued	534	327
Net cash flows provided by (used in) financing activities	1,545,900	(184,310)
Net increase (decrease) in cash and cash equivalents	469,474	(24,055)
Cash and cash equivalents at beginning of period	728,412	822,019
Cash and cash equivalents at end of period	1,197,886	797,964
Supplemental cash flow information:
Total interest paid	253,542	30,904
Total income taxes paid (net of refunds)	87,668	(183)
Issuance of common stock	0	2,446,312
Securities transferred from available-for-sale to held-to-maturity	0	2,986,736
Operating lease right-of-use assets obtained in exchange for lease obligations	7,542	3,141
Finance lease right-of-use assets obtained in exchange for lease obligations	9,141	209
Preferred Stock
Supplemental cash flow information:
Issuance of common stock	$ 0	$ 243,870

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation	BASIS OF PRESENTATION The accompanying unaudited consolidated financial statements include the accounts of Old National Bancorp and its wholly-owned subsidiaries (hereinafter collectively referred to as “Old National”) and have been prepared in conformity with accounting principles generally accepted in the United States of America and prevailing practices within the banking industry. Such principles require management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and the disclosures of contingent assets and liabilities at the date of the financial statements and amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, the consolidated financial statements contain all the normal and recurring adjustments necessary for a fair statement of the financial position of Old National as of June 30, 2023 and December 31, 2022, and the results of its operations for the three and six months ended June 30, 2023 and 2022. Interim results do not necessarily represent annual results. Certain information and disclosures normally included in notes to consolidated annual financial statements prepared in accordance with GAAP have been condensed or omitted in this Quarterly Report on Form 10-Q pursuant to SEC rules and regulations. These financial statements should be read in conjunction with Old National’s Annual Report on Form 10-K for the year ended December 31, 2022. All intercompany transactions and balances have been eliminated. Certain prior year amounts have been reclassified to conform to the current presentation. Such reclassifications had no effect on prior period net income or shareholders’ equity and were insignificant amounts. Financial Difficulty Modifications Any loans that are modified are reviewed by Old National to identify if a financial difficulty modification has occurred, which is when Old National Bank modifies a loan related to a borrower experiencing financial difficulties. Terms may be modified to fit the ability of the borrower to repay in line with its current financial status. The modification of the terms of such loans includes one or a combination of the following: a reduction of the stated interest rate of the loan, an extension of the maturity date, a permanent reduction of the recorded investment of the loan, or an other-than-insignificant payment delay. The adoption of ASU 2022-02 on January 1, 2023 eliminated the recognition and measurement of TDRs and enhanced disclosures for modifications to loans related to borrowers experiencing financial difficulties. See Note 2 to the consolidated financial statements for additional detail regarding the adoption of ASU 2022-02. Other than the changes for financial difficulty modifications, there have been no material changes from the significant accounting policies disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2023
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Accounting Guidance Adopted in 2023 FASB ASC 805 – In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities From Contracts With Customers , to address diversity in practice and inconsistency related to the accounting for revenue contracts with customers acquired in a business combination. The amendments require that the acquirer recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Topic 606. At the acquisition date, an acquirer should account for the related revenue contracts in accordance with Topic 606 as if it had originated the contracts. The ASU also provides certain practical expedients for acquirers when recognizing and measuring acquired contract assets and liabilities. The amendments in this update are effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. Entities should apply the amendments prospectively to business combinations that occur after the effective date. The adoption of this guidance on January 1, 2023 did not have a material impact on the consolidated financial statements. FASB ASC 815 – In March 2022, the FASB issued ASU 2022-01, Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method , to expand the current single-layer method of electing hedge accounting to allow multiple hedged layers of a single closed portfolio under the method and rename the last-of-layer method the portfolio layer method. The amendments in this update are effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. The adoption of this guidance on January 1, 2023 did not have a material impact on the consolidated financial statements. FASB ASC 326 – In March 2022, the FASB issued ASU 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures , to eliminate the TDR recognition and measurement guidance and, instead, require that an entity evaluate (consistent with the accounting for other loan modifications) whether the modification represents a new loan or a continuation of an existing loan. The amendments also enhance existing disclosure requirements and introduce new requirements related to certain modifications of receivables made to borrowers experiencing financial difficulty. The amendments require that an entity disclose current-period gross charge-offs by year of origination for financing receivables and net investment in leases within the vintage disclosures required by ASC 326. The amendments in this update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Old National adopted the provision in ASU 2022-02 related to the recognition and measurement of TDRs on a prospective basis on January 1, 2023, which did not have a material impact on the consolidated financial statements. FASB ASC 848 – In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , which provides temporary, optional guidance to ease the potential burden in accounting for, or recognizing the effects of, the transition away from LIBOR or other interbank offered rate on financial reporting. The guidance is applicable only to contracts or hedge accounting relationships that reference LIBOR or another reference rate expected to be discontinued. In December 2022, the FASB issued ASU 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848 , which defers the sunset date of relief provisions within Topic 848 from December 31, 2022 to December 31, 2024. The objective of the guidance in Topic 848 is to provide relief during the transition period. The amendments in this ASU are effective March 12, 2020 through December 31, 2024. Old National believes the adoption of this guidance on activities subsequent to June 30, 2023 will not have a material impact on the consolidated financial statements. Accounting Guidance Pending Adoption FASB ASC 820 – In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions , to clarify that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and, therefore, is not considered in measuring fair value. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements. FASB ASC 842 – In March 2023, the FASB issued ASU 2023-01, Leases (Topic 842): Common Control Arrangements , which requires all entities to amortize leasehold improvements associated with common control leases over the useful life to the common control group. This ASU is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for both interim and annual financial statements that have not yet been made available for issuance. If an entity adopts the amendments in an interim period, it must adopt them as of the beginning of the fiscal year that includes that interim period. Transition can be done either retrospectively or prospectively. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements. FASB ASC 323 – In March 2023, the FASB issued ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method , which allows reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. This ASU is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for all entities in any interim period. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements.

Acquisition and Divestiture Act

Acquisition and Divestiture Activity	6 Months Ended
	Jun. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Acquisition and Divestiture Activity	ACQUISITION AND DIVESTITURE ACTIVITY Merger First Midwest Bancorp, Inc. On February 15, 2022, Old National completed its previously announced merger of equals transaction with First Midwest pursuant to an agreement and plan of merger, dated as of May 30, 2021, to combine in an all-stock transaction. The combined organization has a presence in additional Midwestern markets, strong commercial banking capabilities, a robust retail footprint, a significant wealth management platform, and an enhanced ability to attract talent. The combined organization also creates the scale and profitability to accelerate digital and technology capabilities to drive future investments in consumer and commercial banking, as well as wealth management services. As of December 31, 2022, Old National finalized its valuation of all assets acquired and liabilities assumed. Transaction costs totaling $16.9 million associated with the merger have been expensed for the six months ended June 30, 2023, compared to $77.9 million during the six months ended June 30, 2022. Additional transaction and integration costs will be expensed in future periods as incurred. Divestiture On November 18, 2022, Old National completed its previously announced transaction with UMB, pursuant to which UMB acquired Old National’s business of acting as a qualified custodian for, and administering, health savings accounts. Old National served as custodian for health savings accounts comprised of both investment accounts and deposit accounts. At closing, the health savings accounts held in deposit accounts that were transferred totaled approximately $382 million and the transaction resulted in a $90.7 million pre-tax gain.

Net Income Per Common Share

Net Income Per Common Share	6 Months Ended
	Jun. 30, 2023
Earnings Per Share [Abstract]
Net Income Per Common Share	NET INCOME PER COMMON SHARE Basic and diluted net income per common share are calculated using the two-class method. Net income applicable to common shares is divided by the weighted-average number of common shares outstanding during the period. Adjustments to the weighted average number of common shares outstanding are made only when such adjustments will dilute net income per common share. Net income applicable to common shares is then divided by the weighted-average number of common shares and common share equivalents during the period. The following table presents the calculation of basic and diluted net income per common share: Three Months Ended Six Months Ended (dollars and shares in thousands, except per share data) 2023 2022 2023 2022 Net income $ 155,036 $ 114,985 $ 301,636 $ 87,399 Preferred dividends (4,033) (4,033) (8,067) (6,050) Net income applicable to common shares $ 151,003 $ 110,952 $ 293,569 $ 81,349 Weighted average common shares outstanding: Weighted average common shares outstanding (basic) 290,559 290,862 290,822 259,108 Effect of dilutive securities: Restricted stock 707 1,014 1,047 1,136 Stock appreciation rights — 5 1 9 Weighted average diluted shares outstanding 291,266 291,881 291,870 260,253 Basic Net Income Per Common Share $ 0.52 $ 0.38 $ 1.01 $ 0.31 Diluted Net Income Per Common Share $ 0.52 $ 0.38 $ 1.01 $ 0.31

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES The following table summarizes the amortized cost and fair value of the available-for-sale and held-to-maturity investment securities portfolios and the corresponding amounts of gross unrealized gains, unrealized losses, and basis adjustments in AOCI and gross unrecognized gains and losses. (dollars in thousands) Amortized Unrealized Unrealized Basis Adjustments (1) Fair June 30, 2023 Available-for-Sale U.S. Treasury $ 364,824 $ — $ (9,245) $ (43,167) $ 312,412 U.S. government-sponsored entities and agencies 1,448,873 — (201,623) (72,894) 1,174,356 Mortgage-backed securities - Agency 4,760,921 123 (663,273) — 4,097,771 States and political subdivisions 623,196 844 (25,258) — 598,782 Pooled trust preferred securities 13,791 — (2,797) — 10,994 Other securities 339,653 117 (33,570) — 306,200 Total available-for-sale securities $ 7,551,258 $ 1,084 $ (935,766) $ (116,061) $ 6,500,515 Held-to-Maturity U.S. government-sponsored entities and agencies $ 822,517 $ — $ (167,071) $ — $ 655,446 Mortgage-backed securities - Agency 1,070,687 — (142,191) — 928,496 States and political subdivisions 1,161,943 437 (143,114) — 1,019,266 Allowance for securities held-to-maturity (150) — — — (150) Total held-to-maturity securities $ 3,054,997 $ 437 $ (452,376) $ — $ 2,603,058 December 31, 2022 Available-for-Sale U.S. Treasury $ 253,148 $ 5 $ (5,189) $ (47,037) $ 200,927 U.S. government-sponsored entities and agencies 1,451,736 — (169,248) (107,408) 1,175,080 Mortgage-backed securities - Agency 4,986,354 976 (617,428) — 4,369,902 States and political subdivisions 688,159 1,789 (26,096) — 663,852 Pooled trust preferred securities 13,783 — (2,972) — 10,811 Other securities 379,423 258 (26,541) — 353,140 Total available-for-sale securities $ 7,772,603 $ 3,028 $ (847,474) $ (154,445) $ 6,773,712 Held-to-Maturity U.S. government-sponsored entities and agencies $ 819,168 $ — $ (162,810) $ — $ 656,358 Mortgage-backed securities - Agency 1,106,817 — (123,854) — 982,963 States and political subdivisions 1,163,312 221 (159,022) — 1,004,511 Allowance for securities held-to-maturity (150) — — — (150) Total held-to-maturity securities $ 3,089,147 $ 221 $ (445,686) $ — $ 2,643,682 (1) Basis adjustments represent the cumulative fair value adjustments included in the carrying amounts of fixed-rate investment securities assets in fair value hedging arrangements . Proceeds from sales or calls of available-for-sale investment securities and the resulting realized gains and realized losses were as follows: Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Proceeds $ 24,933 $ 23,234 $ 82,888 $ 73,347 Realized gains 39 48 948 511 Realized losses (22) (133) (6,147) (254) Substantially all of the mortgage-backed securities in the investment portfolio are residential mortgage-backed securities. The table below shows the amortized cost and fair value of the investment securities portfolio by contractual maturity. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties. Weighted average yield is based on amortized cost. June 30, 2023 (dollars in thousands) Amortized Fair Weighted Maturity Available-for-Sale Within one year $ 242,424 $ 238,951 3.93 % One to five years 1,621,101 1,478,764 2.77 Five to ten years 3,926,306 3,374,584 2.35 Beyond ten years 1,761,427 1,408,216 2.43 Total $ 7,551,258 $ 6,500,515 2.51 % Held-to-Maturity One to five years 162,082 135,763 2.71 % Five to ten years 888,640 780,437 2.61 Beyond ten years 2,004,275 1,686,858 2.73 Total $ 3,054,997 $ 2,603,058 2.69 % The following table summarizes the available-for-sale investment securities with unrealized losses for which an allowance for credit losses has not been recorded by aggregated major security type and length of time in a continuous unrealized loss position: Less than 12 months 12 months or longer Total (dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Losses June 30, 2023 Available-for-Sale U.S. Treasury $ 124,751 $ (258) $ 187,661 $ (8,987) $ 312,412 $ (9,245) U.S. government-sponsored entities 14,732 (264) 1,159,624 (201,359) 1,174,356 (201,623) Mortgage-backed securities - Agency 402,696 (19,217) 3,677,906 (644,056) 4,080,602 (663,273) States and political subdivisions 168,144 (1,406) 264,829 (23,852) 432,973 (25,258) Pooled trust preferred securities — — 10,994 (2,797) 10,994 (2,797) Other securities 25,133 (498) 265,688 (33,072) 290,821 (33,570) Total available-for-sale $ 735,456 $ (21,643) $ 5,566,702 $ (914,123) $ 6,302,158 $ (935,766) December 31, 2022 Available-for-Sale U.S. Treasury $ 130,967 $ (3,264) $ 66,992 $ (1,925) $ 197,959 $ (5,189) U.S. government-sponsored entities 454,854 (75,795) 720,226 (93,453) 1,175,080 (169,248) Mortgage-backed securities - Agency 3,207,319 (358,507) 1,116,205 (258,921) 4,323,524 (617,428) States and political subdivisions 414,813 (25,555) 2,703 (541) 417,516 (26,096) Pooled trust preferred securities — — 10,811 (2,972) 10,811 (2,972) Other securities 257,775 (17,045) 75,309 (9,496) 333,084 (26,541) Total available-for-sale $ 4,465,728 $ (480,166) $ 1,992,246 $ (367,308) $ 6,457,974 $ (847,474) The following table summarizes the held-to-maturity investment securities with unrecognized losses aggregated by major security type and length of time in a continuous loss position: Less than 12 months 12 months or longer Total (dollars in thousands) Fair Unrecognized Fair Unrecognized Fair Unrecognized June 30, 2023 Held-to-Maturity U.S. government-sponsored entities $ 81,251 $ (8,138) $ 574,195 $ (158,933) $ 655,446 $ (167,071) Mortgage-backed securities - Agency 244,643 (24,690) 683,853 (117,501) 928,496 (142,191) States and political subdivisions 38,302 (394) 948,627 (142,720) 986,929 (143,114) Total held-to-maturity $ 364,196 $ (33,222) $ 2,206,675 $ (419,154) $ 2,570,871 $ (452,376) December 31, 2022 Held-to-Maturity U.S. government-sponsored entities 354,293 (110,523) 302,066 (52,287) 656,359 (162,810) Mortgage-backed securities - Agency 367,849 (42,438) 615,114 (81,416) 982,963 (123,854) States and political subdivisions 838,689 (127,355) 135,573 (31,667) 974,262 (159,022) Total held-to-maturity $ 1,560,831 $ (280,316) $ 1,052,753 $ (165,370) $ 2,613,584 $ (445,686) The unrecognized losses on held-to-maturity investment securities presented in the table above do not include unrecognized losses on securities that were transferred from available-for-sale to held-to-maturity totaling $137.9 million at June 30, 2023 and $148.9 million at December 31, 2022. These unrecognized losses are included as a separate component of shareholders’ equity and are being amortized over the remaining term of the securities. No allowance for credit losses on available-for-sale debt securities was needed at June 30, 2023 or December 31, 2022. An allowance on held-to-maturity debt securities is maintained for certain municipal bonds to account for expected lifetime credit losses. Substantially all of the U.S. government-sponsored entities and agencies and agency mortgage-backed securities are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major credit rating agencies, and have a long history of no credit losses. Therefore, for those securities, we do not record expected credit losses. The allowance for credit losses on held-to-maturity debt securities was $0.2 million at June 30, 2023 and December 31, 2022. Accrued interest receivable on the securities portfolio is excluded from the estimate of credit losses and totaled $50.6 million at June 30, 2023 and $50.9 million at December 31, 2022. At June 30, 2023, Old National’s securities portfolio consisted of 3,047 securities, 2,808 of which were in an unrealized loss position. The unrealized losses attributable to our U.S. Treasury, U.S. government-sponsored entities and agencies, agency mortgage-backed securities, states and political subdivisions, and other securities are the result of fluctuations in interest rates and temporary market movements. Old National’s pooled trust preferred securities are evaluated using collateral-specific assumptions to estimate the expected future interest and principal cash flows. At June 30, 2023, we had no intent to sell any securities that were in an unrealized loss position nor is it expected that we would be required to sell the securities prior to their anticipated recovery. Old National’s two pooled trust preferred securities with fair values totaling $11.0 million and unrealized losses totaling $2.8 million have experienced credit defaults. However, we believe that the value of the instruments lies in the full and timely interest payments that will be received through maturity, the steady amortization that will be experienced until maturity, and the full return of principal by the final maturity of the collateralized debt obligations. Old National did not recognize any losses on these securities for the six months ended June 30, 2023 or 2022. Equity Securities Equity securities consist of mutual funds for Community Reinvestment Act qualified investments and diversified investment securities held in a grantor trust for participants in the Company’s nonqualified deferred compensation plan. Old National’s equity securities with readily determinable fair values totaled $72.0 million at June 30, 2023 and $52.5 million at December 31, 2022. There were gains on equity securities of $0.1 million during the three months ended June 30, 2023 and losses of $0.7 million during the six months ended June 30, 2023, compared to losses of $2.4 million and $4.2 million during the three and six months ended June 30, 2022, respectively. Alternative Investments Old National has alternative investments without readily determinable fair values that are included in other assets totaling $401.4 million at June 30, 2023, consisting of $243.1 million of illiquid investments in partnerships, limited liability companies, and other ownership interests that support affordable housing and $158.3 million of economic development and community revitalization initiatives in low-to-moderate income neighborhoods. These alternative investments totaled $396.8 million at December 31, 2022. There have been no impairments or adjustments on equity securities without readily determinable fair values, except for amortization of tax credit investments in the six months ended June 30, 2023 and 2022. See Note 9 to the consolidated financial statements for detail regarding these investments.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	6 Months Ended
	Jun. 30, 2023
Receivables [Abstract]
Loans and Allowance for Credit Losses	LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans Old National’s loans consist primarily of loans made to consumers and commercial clients in many diverse industries, including real estate rental and leasing, manufacturing, healthcare, wholesale trade, construction, and agriculture, among others. Most of Old National’s lending activity occurs within our principal geographic markets in the Midwest region. Old National manages concentrations of credit exposure by industry, product, geography, client relationship, and loan size. The loan categories used to monitor and analyze interest income and yields are different than the portfolio segments used to determine the allowance for credit losses on loans. The allowance for credit losses was calculated by pooling loans of similar credit risk characteristics and credit monitoring procedures. The four loan portfolios used to monitor and analyze interest income and yields – commercial, commercial real estate, residential real estate, and consumer – are reclassified into seven segments of loans – commercial, commercial real estate, BBCC, residential real estate, indirect, direct, and home equity for purposes of determining the allowance for credit losses on loans. The commercial and commercial real estate loan categories shown on the balance sheet include the same pool of loans as the commercial, commercial real estate, and BBCC portfolio segments. The consumer loan category shown on the balance sheet is comprised of the same loans in the indirect, direct, and home equity portfolio segments. The portfolio segment reclassifications follow: Balance Sheet Portfolio After (dollars in thousands) June 30, 2023 Loans: Commercial $ 9,698,241 $ (227,414) $ 9,470,827 Commercial real estate 13,450,209 (162,841) 13,287,368 BBCC N/A 390,255 390,255 Residential real estate 6,684,480 — 6,684,480 Consumer 2,599,543 (2,599,543) N/A Indirect N/A 1,003,287 1,003,287 Direct N/A 565,950 565,950 Home equity N/A 1,030,306 1,030,306 Total $ 32,432,473 $ — $ 32,432,473 December 31, 2022 Loans: Commercial $ 9,508,904 $ (210,280) $ 9,298,624 Commercial real estate 12,457,070 (158,322) 12,298,748 BBCC N/A 368,602 368,602 Residential real estate 6,460,441 — 6,460,441 Consumer 2,697,226 (2,697,226) N/A Indirect N/A 1,034,257 1,034,257 Direct N/A 629,186 629,186 Home equity N/A 1,033,783 1,033,783 Total $ 31,123,641 $ — $ 31,123,641 The composition of loans by portfolio segment follows: (dollars in thousands) June 30, December 31, Commercial (1) $ 9,470,827 $ 9,298,624 Commercial real estate 13,287,368 12,298,748 BBCC 390,255 368,602 Residential real estate 6,684,480 6,460,441 Indirect 1,003,287 1,034,257 Direct 565,950 629,186 Home equity 1,030,306 1,033,783 Total loans 32,432,473 31,123,641 Allowance for credit losses on loans (300,555) (303,671) Net loans $ 32,131,918 $ 30,819,970 (1) Includes direct finance leases of $176.7 million at June 30, 2023 and $188.1 million at December 31, 2022. The risk characteristics of each loan portfolio segment are as follows: Commercial Commercial loans are classified primarily on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. The cash flows of borrowers, however, may not be as expected and the collateral securing these loans may fluctuate in value. Most commercial loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee; however, some loans may be made on an unsecured basis. In the case of loans secured by accounts receivable, the availability of funds for the repayment of these loans may be substantially dependent on the ability of the borrower to collect amounts due from its clients. Commercial Real Estate Commercial real estate loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves higher loan principal amounts, and the repayment of these loans is generally dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. Commercial real estate loans may be adversely affected by conditions in the real estate markets or in the general economy. The properties securing Old National’s commercial real estate portfolio are diverse in terms of type and geographic location. Management monitors and evaluates commercial real estate loans based on collateral, geography, and risk grade criteria. In addition, management tracks the level of owner-occupied commercial real estate loans versus non-owner occupied loans. Included with commercial real estate are construction loans, which are underwritten utilizing independent appraisal reviews, sensitivity analysis of absorption and lease rates, financial analysis of the developers and property owners, and feasibility studies, if available. Construction loans are generally based on estimates of costs and value associated with the complete project. These estimates may be inaccurate. Construction loans often involve the disbursement of substantial funds with repayment substantially dependent on the success of the ultimate project. Sources of repayment for these types of loans may be pre-committed permanent loans from approved long-term lenders (including Old National), sales of developed property, or an interim loan commitment from Old National until permanent financing is obtained. These loans are closely monitored by on-site inspections and are considered to have higher risks than other real estate loans due to their ultimate repayment being sensitive to interest rate changes, governmental regulation of real property, general economic conditions, and the availability of long-term financing. At 240%, Old National Bank’s commercial real estate loans as a percentage of its risk-based capital remained below the regulatory guideline limit of 300% at June 30, 2023. BBCC BBCC loans are typically granted to small businesses with gross revenues of less than $5 million and aggregate debt of less than $1 million. Old National has established minimum debt service coverage ratios, minimum FICO scores for owners and guarantors, and the ability to show relatively stable earnings as criteria to help mitigate risk. Repayment of these loans depends on the personal income of the borrowers and the cash flows of the business. These factors can be affected by factors such as changes in economic conditions and unemployment levels. Residential With respect to residential loans that are secured by 1 - 4 family residences and are generally owner occupied, Old National typically establishes a maximum loan-to-value ratio and generally requires private mortgage insurance if that ratio is exceeded. Repayment of these loans is primarily dependent on the personal income of the borrowers, which can be impacted by economic conditions in their market areas such as unemployment levels. Repayment can also be impacted by changes in residential property values. Portfolio risk is mitigated by the fact that the loans are of smaller individual amounts and spread over a large number of borrowers. Indirect Indirect loans are secured by automobile collateral, generally new and used cars and trucks from auto dealers that operate within our footprint. Old National typically mitigates the risk of indirect loans by establishing minimum FICO scores, maximum loan-to-value ratios, and maximum debt-to-income ratios. Repayment of these loans depends largely on the personal income of the borrowers, which can be affected by changes in economic conditions such as unemployment levels. Portfolio risk is mitigated by the fact that the loans are of smaller amounts spread over many borrowers, conservative credit policies, and ongoing reviews of dealer relationships. Direct Direct loans are typically secured by collateral such as auto or real estate or are unsecured. Old National has established conservative underwriting standards such as minimum FICO scores, maximum loan-to-value ratios, and maximum debt-to-income ratios. Repayment of these loans depends largely on the personal income of the borrowers, which can be affected by changes in economic conditions such as unemployment levels. Portfolio risk is mitigated by the fact that the loans are of smaller amounts spread over many borrowers along with conservative credit policies. Home Equity Home equity loans are generally secured by 1 - 4 family residences that are owner occupied. Old National has established conservative underwriting standards such as minimum FICO scores, maximum loan-to-value ratios, and maximum debt-to-income ratios. Repayment of these loans depends largely on the personal income of the borrowers, which can be affected by changes in economic conditions such as unemployment levels. Portfolio risk is mitigated by the fact that the loans are of smaller amounts spread over many borrowers, along with conservative credit policies as well as monitoring of updated borrower credit scores. Allowance for Credit Losses Loans Credit quality within the loans held for investment portfolio is continuously monitored by management and is reflected within the allowance for credit losses on loans. The allowance for credit losses is an estimate of expected losses inherent within the Company’s loans held for investment portfolio. Credit quality is assessed and monitored by evaluating various attributes and the results of those evaluations are utilized in underwriting new loans and in our process for estimating expected credit losses. Expected credit loss inherent in non-cancelable off-balance-sheet credit exposures is accounted for as a separate liability included in other liabilities on the balance sheet. The allowance for credit losses on loans held for investment is adjusted by a credit loss expense, which is reported in earnings, and reduced by the charge-off of loan amounts, net of recoveries. Old National has made a policy election to report accrued interest receivable as a separate line item on the balance sheet. Accrued interest receivable on loans is excluded from the estimate of credit losses and totaled $149.9 million at June 30, 2023 and $137.7 million at December 31, 2022. The allowance for credit loss estimation process involves procedures to appropriately consider the unique characteristics of our loan portfolio segments. These segments are further disaggregated into loan classes based on the level at which credit risk is monitored. When computing the level of expected credit losses, credit loss assumptions are estimated using a model that categorizes loan pools based on loss history, delinquency status, and other credit trends and risk characteristics, including current conditions and reasonable and supportable forecasts about the future. Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. In future periods, evaluations of the overall loan portfolio, in light of the factors and forecasts then prevailing, may result in significant changes in the allowance and credit loss expense in those future periods. The allowance level is influenced by loan volumes, loan AQR migration or delinquency status, changes in historical loss experience, and other conditions influencing loss expectations, such as reasonable and supportable forecasts of economic conditions. The methodology for estimating the amount of expected credit losses reported in the allowance for credit losses has two basic components: first, an asset-specific component involving individual loans that do not share risk characteristics with other loans and the measurement of expected credit losses for such individual loans; and second, a pooled component for estimated expected credit losses for pools of loans that share similar risk characteristics. The base forecast scenario considers unemployment, gross domestic product, and the BBB ratio (BBB spread to the 10-year U.S. Treasury rate). In addition to the quantitative inputs, several qualitative factors are considered. These factors include the risk that unemployment, gross domestic product, housing product index, and the BBB ratio prove to be more severe and/or prolonged than our baseline forecast due to a variety of factors including monetary actions to control inflation, recent instability in the banking sector, conflict in Ukraine, and global supply chain issues. Old National’s activity in the allowance for credit losses on loans by portfolio segment was as follows: (dollars in thousands) Balance at Allowance Charge-offs Recoveries Provision Balance at Three Months Ended Commercial $ 125,768 $ — $ (8,331) $ 1,814 $ 8,152 $ 127,403 Commercial real estate 135,348 — (2,458) 1,029 2,978 136,897 BBCC 2,316 — (94) 31 523 2,776 Residential real estate 20,207 — (218) 53 379 20,421 Indirect 1,434 — (402) 612 (237) 1,407 Direct 6,766 — (2,600) 637 (48) 4,755 Home equity 6,872 — (228) 63 189 6,896 Total $ 298,711 $ — $ (14,331) $ 4,239 $ 11,936 $ 300,555 Three Months Ended Commercial $ 99,471 $ — $ (1,344) $ 781 $ 3,911 $ 102,819 Commercial real estate 140,490 — (318) 320 1,310 141,802 BBCC 2,069 — (20) 91 (76) 2,064 Residential real estate 17,252 — (137) 130 2,484 19,729 Indirect 1,648 — (528) 320 201 1,641 Direct 14,450 — (1,722) 676 1,008 14,412 Home equity 5,127 — (27) 20 416 5,536 Total $ 280,507 $ — $ (4,096) $ 2,338 $ 9,254 $ 288,003 Six Months Ended Commercial $ 120,612 $ — $ (20,754) $ 2,097 $ 25,448 $ 127,403 Commercial real estate 138,244 — (3,647) 1,292 1,008 136,897 BBCC 2,431 — (122) 104 363 2,776 Residential real estate 21,916 — (241) 125 (1,379) 20,421 Indirect 1,532 — (1,599) 1,024 450 1,407 Direct 12,116 — (5,838) 1,218 (2,741) 4,755 Home equity 6,820 — (310) 130 256 6,896 Total $ 303,671 $ — $ (32,511) $ 5,990 $ 23,405 $ 300,555 Six Months Ended Commercial $ 27,232 $ 35,040 $ (3,223) $ 1,013 $ 42,757 $ 102,819 Commercial real estate 64,004 42,601 (824) 502 35,519 141,802 BBCC 2,458 — (48) 148 (494) 2,064 Residential real estate 9,347 136 (324) 570 10,000 19,729 Indirect 1,743 — (1,012) 542 368 1,641 Direct 528 31 (3,251) 1,270 15,834 14,412 Home equity 2,029 723 (78) 183 2,679 5,536 Total $ 107,341 $ 78,531 $ (8,760) $ 4,228 $ 106,663 $ 288,003 Unfunded Loan Commitments Old National maintains an allowance for credit losses on unfunded loan commitments to provide for the risk of loss inherent in these arrangements. The allowance is computed using a methodology similar to that used to determine the allowance for credit losses on loans, modified to take into account the probability of a drawdown on the commitment. The allowance for credit losses on unfunded loan commitments is classified as a liability account on the balance sheet within accrued expenses and other liabilities, while the corresponding provision for unfunded loan commitments is included in the provision for credit losses. Old National’s activity in the allowance for credit losses on unfunded loan commitments was as follows: Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Allowance for credit losses on unfunded loan commitments: Balance at beginning of period $ 34,156 $ 22,046 $ 32,188 $ 10,879 Provision for credit losses on unfunded commitments — — — 11,013 Provision for unfunded loan commitments 2,851 (80) 4,819 74 Balance at end of period $ 37,007 $ 21,966 $ 37,007 $ 21,966 Credit Quality Old National’s management monitors the credit quality of its loans on an ongoing basis with the AQR for commercial loans reviewed annually or at renewal and the performance of its residential and consumer loans based upon the accrual status refreshed at least quarterly. Internally, management assigns an AQR to each non-homogeneous commercial, commercial real estate, and BBCC loan in the portfolio. The primary determinants of the AQR are the reliability of the primary source of repayment and the past, present, and projected financial condition of the borrower. The AQR will also consider current industry conditions. Major factors used in determining the AQR can vary based on the nature of the loan, but commonly include factors such as debt service coverage, internal cash flow, liquidity, leverage, operating performance, debt burden, FICO scores, occupancy, interest rate sensitivity, and expense burden. Old National uses the following definitions for risk ratings: Criticized . Special mention loans that have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date. Classified – Substandard . Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Classified – Nonaccrual . Loans classified as nonaccrual have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection in full, on the basis of currently existing facts, conditions, and values, in doubt. Classified – Doubtful . Loans classified as doubtful have all the weaknesses inherent in those classified as nonaccrual, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Pass rated loans are those loans that are other than criticized, classified – substandard, classified – nonaccrual, or classified – doubtful. The following table summarizes the amortized cost of term loans by risk category of commercial, commercial real estate, and BBCC loans by loan portfolio segment, class of loan, and origination year: Origination Year Revolving to Term (dollars in thousands) 2023 2022 2021 2020 2019 Prior Revolving Total June 30, 2023 Commercial: Risk Rating: Pass $ 1,108,984 $ 1,860,049 $ 1,307,700 $ 671,792 $ 604,875 $ 673,184 $ 2,185,539 $ 465,649 $ 8,877,772 Criticized 28,284 84,240 15,092 23,548 29,772 32,376 74,437 25,524 313,273 Classified: Substandard 17,252 16,246 36,914 36,303 4,671 22,508 52,794 37,482 224,170 Nonaccrual — 349 — 585 824 6,681 1,064 2,210 11,713 Doubtful — 24,047 12,536 1,832 583 4,901 — — 43,899 Total $ 1,154,520 $ 1,984,931 $ 1,372,242 $ 734,060 $ 640,725 $ 739,650 $ 2,313,834 $ 530,865 $ 9,470,827 Commercial real estate: Risk Rating: Pass $ 1,188,882 $ 3,335,715 $ 2,791,366 $ 1,852,690 $ 1,083,211 $ 1,511,576 $ 84,574 $ 677,072 $ 12,525,086 Criticized 28,324 30,372 31,377 32,238 54,738 88,116 3,893 23,353 292,411 Classified: Substandard 14,685 71,131 17,505 19,748 79,998 44,060 — 49,825 296,952 Nonaccrual — 866 18,463 1,064 456 16,081 — 3,272 40,202 Doubtful — 3,802 31,341 9,249 39,559 48,766 — — 132,717 Total $ 1,231,891 $ 3,441,886 $ 2,890,052 $ 1,914,989 $ 1,257,962 $ 1,708,599 $ 88,467 $ 753,522 $ 13,287,368 BBCC: Risk Rating: Pass $ 52,620 $ 77,831 $ 53,068 $ 44,433 $ 32,200 $ 28,305 $ 69,107 $ 16,637 $ 374,201 Criticized 987 1,445 1,081 360 1,045 483 1,836 1,626 8,863 Classified: Substandard 10 497 629 49 226 836 484 856 3,587 Nonaccrual 37 313 323 128 235 668 — 644 2,348 Doubtful — 408 219 — 55 74 500 — 1,256 Total $ 53,654 $ 80,494 $ 55,320 $ 44,970 $ 33,761 $ 30,366 $ 71,927 $ 19,763 $ 390,255 Origination Year Revolving to Term (dollars in thousands) 2022 2021 2020 2019 2018 Prior Revolving Total December 31, 2022 Commercial: Risk Rating: Pass $ 2,388,618 $ 1,754,364 $ 796,340 $ 738,208 $ 362,986 $ 388,617 $ 1,988,763 $ 329,119 $ 8,747,015 Criticized 40,856 30,661 63,557 33,490 9,195 5,312 61,036 4,327 248,434 Classified: Substandard 37,223 47,522 16,540 22,925 4,844 21,204 67,402 25,143 242,803 Nonaccrual 3,627 1,453 566 — — — 1,634 6,623 13,903 Doubtful 2,821 17,604 3,720 8,005 5,968 8,351 — — 46,469 Total $ 2,473,145 $ 1,851,604 $ 880,723 $ 802,628 $ 382,993 $ 423,484 $ 2,118,835 $ 365,212 $ 9,298,624 Commercial real estate: Risk Rating: Pass $ 3,066,960 $ 2,828,758 $ 1,989,000 $ 1,219,025 $ 675,572 $ 1,018,719 $ 57,818 $ 689,553 $ 11,545,405 Criticized 75,306 34,422 22,569 82,637 86,504 56,864 — 23,282 381,584 Classified: Substandard 46,231 16,928 24,319 78,468 57,824 21,591 — 4,108 249,469 Nonaccrual 3,151 9,541 5,014 — 2,312 22,155 — 3,257 45,430 Doubtful 1,934 38,386 10,011 4,605 1,523 20,401 — — 76,860 Total $ 3,193,582 $ 2,928,035 $ 2,050,913 $ 1,384,735 $ 823,735 $ 1,139,730 $ 57,818 $ 720,200 $ 12,298,748 BBCC: Risk Rating: Pass $ 90,341 $ 64,161 $ 52,304 $ 36,868 $ 23,618 $ 11,333 $ 60,016 $ 18,881 $ 357,522 Criticized 1,504 525 368 692 353 — 1,006 1,603 6,051 Classified: Substandard 811 143 — 421 — — 543 682 2,600 Nonaccrual 42 37 118 — 429 284 — 639 1,549 Doubtful 40 107 439 157 64 73 — — 880 Total $ 92,738 $ 64,973 $ 53,229 $ 38,138 $ 24,464 $ 11,690 $ 61,565 $ 21,805 $ 368,602 For residential real estate and consumer loan classes, Old National evaluates credit quality based on the aging status of the loan and by payment activity. The performing or nonperforming status is updated on an on-going basis dependent upon improvement and deterioration in credit quality. The following table presents the amortized cost of term residential real estate and consumer loans based on payment activity and origination year: Origination Year Revolving to Term (dollars in thousands) 2023 2022 2021 2020 2019 Prior Revolving Total June 30, 2023 Residential real estate: Risk Rating: Performing $ 261,285 $ 1,480,926 $ 1,948,505 $ 1,709,893 $ 459,251 $ 785,089 $ — $ 143 $ 6,645,092 Nonperforming — 1,892 2,727 4,200 3,378 27,191 — — 39,388 Total $ 261,285 $ 1,482,818 $ 1,951,232 $ 1,714,093 $ 462,629 $ 812,280 $ — $ 143 $ 6,684,480 Indirect: Risk Rating: Performing $ 187,644 $ 425,822 $ 202,230 $ 98,742 $ 57,413 $ 27,397 $ — $ 83 $ 999,331 Nonperforming 65 1,107 798 1,082 438 466 — — 3,956 Total $ 187,709 $ 426,929 $ 203,028 $ 99,824 $ 57,851 $ 27,863 $ — $ 83 $ 1,003,287 Direct: Risk Rating: Performing $ 53,778 $ 110,107 $ 121,141 $ 77,169 $ 41,509 $ 80,155 $ 74,945 $ 1,348 $ 560,152 Nonperforming 21 275 489 562 463 3,970 8 10 5,798 Total $ 53,799 $ 110,382 $ 121,630 $ 77,731 $ 41,972 $ 84,125 $ 74,953 $ 1,358 $ 565,950 Home equity: Risk Rating: Performing $ — $ 1,328 $ 843 $ 859 $ 943 $ 6,573 $ 988,669 $ 16,859 $ 1,016,074 Nonperforming — 51 130 82 1,057 4,776 1,961 6,175 14,232 Total $ — $ 1,379 $ 973 $ 941 $ 2,000 $ 11,349 $ 990,630 $ 23,034 $ 1,030,306 Origination Year Revolving to Term 2022 2021 2020 2019 2018 Prior Revolving Total December 31, 2022 Residential real estate: Risk Rating: Performing $ 1,327,168 $ 1,945,792 $ 1,825,762 $ 478,529 $ 136,260 $ 712,175 $ 7 $ 88 $ 6,425,781 Nonperforming 59 529 861 873 1,826 30,512 — — 34,660 Total $ 1,327,227 $ 1,946,321 $ 1,826,623 $ 479,402 $ 138,086 $ 742,687 $ 7 $ 88 $ 6,460,441 Indirect: Risk Rating: Performing $ 504,410 $ 249,407 $ 144,265 $ 82,304 $ 31,484 $ 19,095 $ — $ 62 $ 1,031,027 Nonperforming 348 1,074 645 531 304 328 — — 3,230 Total $ 504,758 $ 250,481 $ 144,910 $ 82,835 $ 31,788 $ 19,423 $ — $ 62 $ 1,034,257 Direct: Risk Rating: Performing $ 132,934 $ 164,126 $ 77,406 $ 57,919 $ 45,299 $ 59,212 $ 87,622 $ 671 $ 625,189 Nonperforming 115 851 614 205 327 1,526 5 354 3,997 Total $ 133,049 $ 164,977 $ 78,020 $ 58,124 $ 45,626 $ 60,738 $ 87,627 $ 1,025 $ 629,186 Home equity: Risk Rating: Performing $ 919 $ 896 $ 1,849 $ 1,497 $ 983 $ 11,646 $ 990,001 $ 14,792 $ 1,022,583 Nonperforming 166 160 166 446 794 4,308 1,698 3,462 11,200 Total $ 1,085 $ 1,056 $ 2,015 $ 1,943 $ 1,777 $ 15,954 $ 991,699 $ 18,254 $ 1,033,783 The following table summarizes the gross charge-offs of loans by loan portfolio segment and origination year: Origination Year (dollars in thousands) 2023 2022 2021 2020 2019 Prior Revolving Total Three Months Ended June 30, 2023 Commercial $ — $ 2,100 $ 5,931 $ 120 $ — $ — $ 180 $ 8,331 Commercial real estate — — — — — 2,458 — 2,458 BBCC — 47 — 47 — — — 94 Residential real estate — — — — — 218 — 218 Indirect 10 164 124 48 16 40 — 402 Direct — 430 588 172 414 195 801 2,600 Home equity — — — — — 228 — 228 Total gross charge-offs $ 10 $ 2,741 $ 6,643 $ 387 $ 430 $ 3,139 $ 981 $ 14,331 Six Months Ended June 30, 2023 Commercial $ — $ 2,100 $ 11,161 $ 120 $ 6,789 $ 239 $ 345 $ 20,754 Commercial real estate — 54 735 400 — 2,458 — 3,647 BBCC — 47 28 47 — — — 122 Residential real estate — — — — — 241 — 241 Indirect 10 678 554 141 127 89 — 1,599 Direct — 901 1,382 458 741 390 1,966 5,838 Home equity — — — — — 310 — 310 Total gross charge-offs $ 10 $ 3,780 $ 13,860 $ 1,166 $ 7,657 $ 3,727 $ 2,311 $ 32,511 Nonaccrual and Past Due Loans Old National does not record interest on nonaccrual loans until principal is recovered. For all loan classes, a loan is generally placed on nonaccrual status when principal or interest becomes 90 days past due unless it is well secured and in the process of collection, or earlier when concern exists as to the ultimate collectability of principal or interest. Interest accrued but not received is reversed against earnings. Cash interest received on these loans is applied to the principal balance until the principal is recovered or until the loan returns to accrual status. Loans may be returned to accrual status when all the principal and interest amounts contractually due are brought current, remain current for a prescribed period, and future payments are reasonably assured. The following table presents the aging of the amortized cost basis in past due loans by class of loans: (dollars in thousands) 30-59 Days 60-89 Days Past Due Total Current Total June 30, 2023 Commercial $ 4,164 $ 3,719 $ 15,138 $ 23,021 $ 9,447,806 $ 9,470,827 Commercial real estate 7,760 10,441 35,906 54,107 13,233,261 13,287,368 BBCC 868 847 74 1,789 388,466 390,255 Residential 18,543 4,350 11,131 34,024 6,650,456 6,684,480 Indirect 4,296 1,162 840 6,298 996,989 1,003,287 Direct 3,225 775 1,257 5,257 560,693 565,950 Home equity 6,834 1,473 4,420 12,727 1,017,579 1,030,306 Total $ 45,690 $ 22,767 $ 68,766 $ 137,223 $ 32,295,250 $ 32,432,473 December 31, 2022 Commercial $ 14,147 $ 4,801 $ 11,080 $ 30,028 $ 9,268,596 $ 9,298,624 Commercial real estate 47,240 1,312 32,892 81,444 12,217,304 12,298,748 BBCC 730 365 603 1,698 366,904 368,602 Residential 24,181 5,033 11,753 40,967 6,419,474 6,460,441 Indirect 6,302 2,118 958 9,378 1,024,879 1,034,257 Direct 5,404 2,118 1,928 9,450 619,736 629,186 Home equity 6,585 1,966 4,707 13,258 1,020,525 1,033,783 Total $ 104,589 $ 17,713 $ 63,921 $ 186,223 $ 30,937,418 $ 31,123,641 The following table presents the amortized cost basis of loans on nonaccrual status and loans past due 90 days or more and still accruing by class of loan: June 30, 2023 December 31, 2022 (dollars in thousands) Nonaccrual Nonaccrual Past Due Nonaccrual Nonaccrual Past Due Commercial $ 55,612 $ 12,666 $ 92 $ 60,372 $ 7,873 $ 152 Commercial real estate 172,919 44,218 173 122,290 33,445 — BBCC 3,604 — — 2,429 — — Residential 39,388 — — 34,660 — 1,808 Indirect 3,956 — — 3,230 — 28 Direct 5,798 — 25 3,997 — 133 Home equity 14,232 — 13 11,200 — 529 Total $ 295,509 $ 56,884 $ 303 $ 238,178 $ 41,318 $ 2,650 Interest income recognized on nonaccrual loans was insignificant during the three and six months ended June 30, 2023 and 2022. When management determines that foreclosure is probable, expected credit losses for collateral dependent loans are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. A loan is considered collateral dependent when the borrower is experiencing financial difficulty and the loan is expected to be repaid substantially through the operation or sale of the collateral. The class of loan represents the primary collateral type associated with the loan. Significant quarter-over-quarter changes are reflective of changes in nonaccrual status and not necessarily associated with credit quality indicators like appraisal value. The following table presents the amortized cost basis of collateral dependent loans by class of loan: Type of Collateral (dollars in thousands) Real Blanket Investment Auto Other June 30, 2023 Commercial $ 14,450 $ 37,285 $ 652 $ 535 $ 366 Commercial real estate 156,570 3,908 1,246 — 6,259 BBCC 2,267 1,301 — 36 — Residential 39,388 — — — — Indirect — — — 3,956 — Direct 4,973 6 — 253 32 Home equity 14,232 — — — — Total loans $ 231,880 $ 42,500 $ 1,898 $ 4,780 $ 6,657 December 31, 2022 Commercial $ 8,962 $ 42,754 $ 2,690 $ 1,611 $ 980 Commercial real estate 108,871 — 1,718 — 6,411 BBCC 1,939 478 — 12 — Residential 34,660 — — — — Indirect — — — 3,230 — Direct 2,991 13 — 232 23 Home equity 11,200 — — — — Total loans $ 168,623 $ 43,245 $ 4,408 $ 5,085 $ 7,414 Loan Participations Old National has loan participations, which qualify as participating interests, with other financial institutions. At June 30, 2023, these loans totaled $2.6 billion, of which $1.2 billion had been sold to other financial institutions and $1.4 billion was retained by Old National. The loan participations convey proportionate ownership rights with equal priority to each participating interest holder; involve no recourse (other than ordinary representations and warranties) to, or subordination by, any participating interest holder; all cash flows are divided among the participating interest holders in proportion to each holder’s share of ownership; and no holder has the right to pledge the entire financial asset unless all participating interest holders agree. Financial Difficulty Modifications Occasionally, Old National modifies loans to borrowers experiencing financial difficulty in the form of principal forgiveness, term extension, an other-than-insignificant payment delay, or interest rate reduction (or a combination thereof). When principal forgiveness is provided, the amount of forgiveness is charged-off against the allowance for credit losses on loans. The following table presents the amortized cost basis of financial difficulty modifications at June 30, 2023 that were modified during the three and six months ended June 30, 2023 by class of loans and type of modification: (dollars in thousands) Term Total Three Months Ended June 30, 2023 Commercial $ 1,231 0.0 % Commercial real estate 12,449 0.1 % Total $ 13,680 0.0 % Six Months Ended June 30, 2023 Commercial $ 18,517 0.2 % Commercial real estate 19,280 0.1 % Total $ 37,797 0.1 % Old National closely monitors the performance of financial difficulty modifications to understand the effectiveness of its efforts. The following table presents the performance of loans identified as financial difficulty modifications at June 30, 2023: (dollars in thousands) 30-59 Days 60-89 Days Past Due Total Current Total June 30, 2023 Commercial $ — $ — $ 2,600 $ 2,600 $ 15,917 $ 18,517 Commercial real estate — 5,537 — 5,537 13,743 19,280 Total $ — $ 5,537 $ 2,600 $ 8,137 $ 29,660 $ 37,797 The following table summarizes the nature of the financial difficulty modifications during the three and six months ended June 30, 2023 by class of loans: (dollars in thousands) Weighted- Three Months Ended June 30, 2023 Commercial 7.0 Commercial real estate 6.0 Total 6.1 Six Months Ended June 30, 2023 Commercial 6.8 Commercial real estate 5.8 Total 6.3 There were no payment defaults on these loans subsequent to their modifications during the three and six months ended June 30, 2023. At June 30, 2023, Old National had not committed to lend any material additional funds to the borrowers whose loans were modified due to financial difficulties.

Leases

Leases	6 Months Ended
	Jun. 30, 2023
Leases [Abstract]
Leases	LEASES Old National has operating and finance leases for land, office space, banking centers, and equipment. These leases are generally for periods of 5 to 20 years with various renewal options. We include certain renewal options in the measurement of our right-of-use assets and lease liabilities if they are reasonably certain to be exercised. Variable lease payments that are dependent on an index or a rate are initially measured using the index or rate at the commencement date and are included in the measurement of the lease liability. Variable lease payments that are not dependent on an index or a rate are excluded from the measurement of the lease liability and are recognized in profit and loss when incurred. Variable lease payments are defined as payments made for the right to use an asset that vary because of changes in facts or circumstances occurring after the commencement date, other than the passage of time. Old National has lease agreements with lease and non-lease components, which are generally accounted for separately. For real estate leases, non-lease components and other non-components, such as common area maintenance charges, real estate taxes, and insurance are not included in the measurement of the lease liability since they are generally able to be segregated. For certain equipment leases, Old National accounts for the lease and non-lease components as a single lease component using the practical expedient available for that class of assets. Old National does not have any material sub-lease agreements. The components of lease expense were as follows: Affected Line Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Operating lease cost Occupancy/Equipment expense $ 7,469 $ 8,558 $ 16,107 $ 13,666 Finance lease cost: Amortization of right-of-use assets Occupancy expense 737 648 1,428 1,323 Interest on lease liabilities Interest expense 184 103 353 210 Sub-lease income Occupancy expense (102) (174) (162) (302) Total $ 8,288 $ 9,135 $ 17,726 $ 14,897 Supplemental balance sheet information related to leases was as follows: (dollars in thousands) June 30, December 31, Operating Leases Operating lease right-of-use assets $ 184,700 $ 189,714 Operating lease liabilities 206,178 211,964 Finance Leases Premises and equipment, net 20,435 10,799 Other borrowings 21,346 13,469 Weighted-Average Remaining Lease Term (in Years) Operating leases 8.7 9.1 Finance leases 10.5 7.2 Weighted-Average Discount Rate Operating leases 2.92 % 2.88 % Finance leases 3.84 % 3.30 % Supplemental cash flow information related to leases was as follows: Six Months Ended (dollars in thousands) 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 15,752 $ 13,705 Operating cash flows from finance leases 353 210 Financing cash flows from finance leases 1,265 1,210 The following table presents a maturity analysis of the Company’s lease liability by lease classification at June 30, 2023: (dollars in thousands) Operating Finance 2023 $ 15,993 $ 1,611 2024 31,241 3,278 2025 29,621 3,301 2026 28,575 2,075 2027 27,604 2,079 Thereafter 101,741 13,964 Total undiscounted lease payments 234,775 26,308 Amounts representing interest (28,597) (4,962) Lease liability $ 206,178 $ 21,346
Leases	LEASES Old National has operating and finance leases for land, office space, banking centers, and equipment. These leases are generally for periods of 5 to 20 years with various renewal options. We include certain renewal options in the measurement of our right-of-use assets and lease liabilities if they are reasonably certain to be exercised. Variable lease payments that are dependent on an index or a rate are initially measured using the index or rate at the commencement date and are included in the measurement of the lease liability. Variable lease payments that are not dependent on an index or a rate are excluded from the measurement of the lease liability and are recognized in profit and loss when incurred. Variable lease payments are defined as payments made for the right to use an asset that vary because of changes in facts or circumstances occurring after the commencement date, other than the passage of time. Old National has lease agreements with lease and non-lease components, which are generally accounted for separately. For real estate leases, non-lease components and other non-components, such as common area maintenance charges, real estate taxes, and insurance are not included in the measurement of the lease liability since they are generally able to be segregated. For certain equipment leases, Old National accounts for the lease and non-lease components as a single lease component using the practical expedient available for that class of assets. Old National does not have any material sub-lease agreements. The components of lease expense were as follows: Affected Line Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Operating lease cost Occupancy/Equipment expense $ 7,469 $ 8,558 $ 16,107 $ 13,666 Finance lease cost: Amortization of right-of-use assets Occupancy expense 737 648 1,428 1,323 Interest on lease liabilities Interest expense 184 103 353 210 Sub-lease income Occupancy expense (102) (174) (162) (302) Total $ 8,288 $ 9,135 $ 17,726 $ 14,897 Supplemental balance sheet information related to leases was as follows: (dollars in thousands) June 30, December 31, Operating Leases Operating lease right-of-use assets $ 184,700 $ 189,714 Operating lease liabilities 206,178 211,964 Finance Leases Premises and equipment, net 20,435 10,799 Other borrowings 21,346 13,469 Weighted-Average Remaining Lease Term (in Years) Operating leases 8.7 9.1 Finance leases 10.5 7.2 Weighted-Average Discount Rate Operating leases 2.92 % 2.88 % Finance leases 3.84 % 3.30 % Supplemental cash flow information related to leases was as follows: Six Months Ended (dollars in thousands) 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 15,752 $ 13,705 Operating cash flows from finance leases 353 210 Financing cash flows from finance leases 1,265 1,210 The following table presents a maturity analysis of the Company’s lease liability by lease classification at June 30, 2023: (dollars in thousands) Operating Finance 2023 $ 15,993 $ 1,611 2024 31,241 3,278 2025 29,621 3,301 2026 28,575 2,075 2027 27,604 2,079 Thereafter 101,741 13,964 Total undiscounted lease payments 234,775 26,308 Amounts representing interest (28,597) (4,962) Lease liability $ 206,178 $ 21,346

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	GOODWILL AND OTHER INTANGIBLE ASSETS The following table presents the changes in the carrying amount of goodwill: Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Balance at beginning of period $ 1,998,716 $ 1,997,157 $ 1,998,716 $ 1,036,994 Acquisitions and adjustments — (5,623) — 954,540 Balance at end of period $ 1,998,716 $ 1,991,534 $ 1,998,716 $ 1,991,534 The decrease in goodwill for the three months ended June 30, 2022 resulted from measurement period adjustments related to the update of fair values of the assets acquired and liabilities assumed in the First Midwest merger. The increase in goodwill for the six months ended June 30, 2022 was due to the First Midwest merger. See Note 3 to the consolidated financial statements for additional detail regarding this transaction. Old National performed the required annual goodwill impairment test as of August 31, 2022 and there was no impairment. No events or circumstances since the August 31, 2022 annual impairment test were noted that would indicate it was more likely than not a goodwill impairment exists. The gross carrying amounts and accumulated amortization of other intangible assets were as follows: (dollars in thousands) Gross Accumulated Net June 30, 2023 Core deposit $ 143,511 $ (63,521) $ 79,990 Customer trust relationships 52,621 (18,452) 34,169 Total other intangible assets $ 196,132 $ (81,973) $ 114,159 December 31, 2022 Core deposit $ 170,642 $ (80,951) $ 89,691 Customer trust relationships 56,243 (19,529) 36,714 Total other intangible assets $ 226,885 $ (100,480) $ 126,405 Other intangible assets consist of core deposit intangibles and customer relationship intangibles and are being amortized primarily on an accelerated basis over their estimated useful lives, generally over a period of 5 to 15 years. Old National reviews other intangible assets for possible impairment whenever events or changes in circumstances indicate that carrying amounts may not be recoverable. No impairment charges were recorded during the six months ended June 30, 2023 or 2022. Total amortization expense associated with intangible assets was $6.1 million and $12.2 million for the three and six months ended June 30, 2023, respectively, compared to $7.2 million and $12.0 million for the three and six months ended June 30, 2022, respectively. Estimated amortization expense for future years is as follows: (dollars in thousands) 2023 remaining $ 11,909 2024 21,239 2025 18,358 2026 15,555 2027 12,867 Thereafter 34,231 Total $ 114,159

Qualified Affordable Housing Pr

Qualified Affordable Housing Projects and Other Tax Credit Investments	6 Months Ended
	Jun. 30, 2023
Investments in Affordable Housing Projects [Abstract]
Qualified Affordable Housing Projects and Other Tax Credit Investments	QUALIFIED AFFORDABLE HOUSING PROJECTS AND OTHER TAX CREDIT INVESTMENTS Old National is a limited partner in several tax-advantaged limited partnerships whose purpose is to invest in approved qualified affordable housing, renewable energy, or other renovation or community revitalization projects. These investments are included in other assets on the balance sheet, with any unfunded commitments included with other liabilities. As of June 30, 2023, Old National expects to recover its remaining investments through the use of the tax credits that are generated by the investments. The following table summarizes Old National’s investments in qualified affordable housing projects and other tax credit investments: (dollars in thousands) June 30, 2023 December 31, 2022 Investment Accounting Method Investment Unfunded Commitment (1) Investment Unfunded LIHTC Proportional amortization $ 90,164 $ 53,327 $ 84,428 $ 55,754 FHTC Equity 19,797 10,016 19,316 9,588 NMTC Consolidation 47,728 — 51,912 — Renewable Energy Equity 608 — 1,099 — Total $ 158,297 $ 63,343 $ 156,755 $ 65,342 (1) All commitments will be paid by Old National by December 31, 2027. The following table summarizes the amortization expense and tax benefit recognized for Old National’s qualified affordable housing projects and other tax credit investments: (dollars in thousands) Amortization Expense (1) Tax Expense (Benefit) Recognized (2) Three Months Ended June 30, 2023 LIHTC $ 1,463 $ (1,908) FHTC 424 (512) NMTC 2,092 (2,611) Renewable Energy 246 — Total $ 4,225 $ (5,031) Three Months Ended June 30, 2022 LIHTC $ 1,240 $ (1,650) FHTC 215 (263) NMTC 1,100 (1,375) Renewable Energy 210 — Total $ 2,765 $ (3,288) Six Months Ended June 30, 2023 LIHTC $ 2,927 $ (3,817) FHTC 848 (1,024) NMTC 4,183 (5,222) Renewable Energy 492 — Total $ 8,450 $ (10,063) Six Months Ended June 30, 2022 LIHTC $ 2,493 $ (3,300) FHTC 420 (514) NMTC 2,201 (2,750) Renewable Energy 420 — Total $ 5,534 $ (6,564) (1) The amortization expense for the LIHTC investments is included in our income tax expense. The amortization expense for the FHTC, NMTC, and Renewable Energy tax credits is included in noninterest expense. (2) All of the tax benefits recognized are included in our income tax expense. The tax benefit recognized for the FHTC, NMTC, and Renewable Energy investments primarily reflects the tax credits generated from the investments and excludes the net tax expense (benefit) and deferred tax liability of the investments’ income (loss).

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	6 Months Ended
	Jun. 30, 2023
Securities Sold under Agreements to Repurchase [Abstract]
Securities Sold Under Agreements to Repurchase	SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE Securities sold under agreements to repurchase are secured borrowings. Old National pledges investment securities to secure these borrowings. The following table presents securities sold under agreements to repurchase and related weighted-average interest rates: At or for the Six Months Ended June 30, (dollars in thousands) 2023 2022 Outstanding at period end $ 311,447 $ 476,173 Average amount outstanding during the period 376,298 458,459 Maximum amount outstanding at any month-end during the period 430,537 509,275 Weighted-average interest rate: During the period 0.90 % 0.08 % At period end 1.14 % 0.08 % At December 31, 2022, securities sold under agreements to repurchase totaled $432.8 million with a weighted-average interest rate of 1.31%. The following table presents the contractual maturity of our secured borrowings and class of collateral pledged: At June 30, 2023 Remaining Contractual Maturity of the Agreements (dollars in thousands) Overnight and Continuous Up to 30-90 Days Greater Than 90 days Total Repurchase Agreements: U.S. Treasury and agency securities $ 311,447 $ — $ — $ — $ 311,447 Total $ 311,447 $ — $ — $ — $ 311,447 The fair value of securities pledged to secure repurchase agreements may decline. Old National has pledged securities valued at 125% of the gross outstanding balance of repurchase agreements at June 30, 2023 to manage this risk.

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	6 Months Ended
	Jun. 30, 2023
Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances	FEDERAL HOME LOAN BANK ADVANCES The following table summarizes Old National Bank’s FHLB advances: (dollars in thousands) June 30, December 31, FHLB advances (fixed rates 0.00% to 5.49% and variable rates 5.09% to 5.18%) maturing September 2023 to September 2042 $ 4,800,528 $ 3,850,677 Fair value hedge basis adjustments and unamortized (29,345) (21,659) Total $ 4,771,183 $ 3,829,018 FHLB advances had weighted-average rates of 3.23% at June 30, 2023 and 3.15% at December 31, 2022. Certain FHLB advances are collateralized with residential real estate loans at 148%. At June 30, 2023, total unamortized prepayment fees related to debt modifications completed in prior years totaled $17.2 million, compared to $20.2 million at December 31, 2022. Contractual maturities of FHLB advances at June 30, 2023 were as follows: (dollars in thousands) Due in 2023 $ 100,000 Due in 2024 25,243 Due in 2025 550,285 Due in 2026 100,000 Thereafter 4,025,000 Fair value hedge basis adjustments and unamortized prepayment fees (29,345) Total $ 4,771,183

Other Borrowings

Other Borrowings	6 Months Ended
	Jun. 30, 2023
Other Liabilities Disclosure [Abstract]
Other Borrowings	OTHER BORROWINGS The following table summarizes Old National’s other borrowings: (dollars in thousands) June 30, December 31, Old National Bancorp: Senior unsecured notes (fixed rate 4.125%) maturing August 2024 $ 175,000 $ 175,000 Unamortized debt issuance costs related to senior unsecured notes (169) (247) Subordinated debentures (fixed rate 5.875%) maturing September 2026 150,000 150,000 Junior subordinated debentures (variable rates of 6.86% to 8.88%) maturing July 2031 to September 2037 136,643 136,643 Other basis adjustments 20,785 23,363 Old National Bank: Finance lease liabilities 21,346 13,469 Subordinated debentures (variable rate 9.66%) maturing October 2025 12,000 12,000 Leveraged loans for NMTC (fixed rates of 1.00% to 1.43%) maturing December 2046 to June 2060 143,745 143,187 Other (1) 155,968 89,588 Total other borrowings $ 815,318 $ 743,003 (1) Includes overnight borrowings to collateralize certain derivative positions totaling $155.1 million at June 30, 2023 and $88.0 million at December 31, 2022. Contractual maturities of other borrowings at June 30, 2023 were as follows: (dollars in thousands) Due in 2023 $ 156,314 Due in 2024 177,609 Due in 2025 14,696 Due in 2026 151,529 Due in 2027 1,587 Thereafter 292,059 Unamortized debt issuance costs and other basis adjustments 21,524 Total $ 815,318 Junior Subordinated Debentures Junior subordinated debentures related to trust preferred securities are classified in “other borrowings.” Junior subordinated debentures qualify as Tier 2 capital for regulatory purposes, subject to certain limitations. Through various mergers and acquisitions, Old National assumed junior subordinated debenture obligations related to various trusts that issued trust preferred securities. Old National guarantees the payment of distributions on the trust preferred securities issued by the trusts. Proceeds from the issuance of each of these securities were used to purchase junior subordinated debentures with the same financial terms as the securities issued by the trusts. Old National, at any time, may redeem the junior subordinated debentures at par and, thereby cause a redemption of the trust preferred securities in whole or in part. The following table summarizes the terms of our outstanding junior subordinated debentures at June 30, 2023: (dollars in thousands) Rate at June 30, Name of Trust Issuance Date Issuance Rate Maturity Date Bridgeview Statutory Trust I July 2001 $ 15,464 3-month LIBOR plus 3.58% 8.88% July 31, 2031 Bridgeview Capital Trust II December 2002 15,464 3-month LIBOR plus 3.35% 8.61% January 7, 2033 First Midwest Capital Trust I November 2003 37,825 6.95% fixed 6.95% December 1, 2033 St. Joseph Capital Trust II March 2005 5,155 3-month LIBOR plus 1.75% 7.26% March 17, 2035 Northern States Statutory Trust I September 2005 10,310 3-month LIBOR plus 1.80% 7.35% September 15, 2035 Anchor Capital Trust III August 2005 5,000 3-month LIBOR plus 1.55% 7.09% September 30, 2035 Great Lakes Statutory Trust II December 2005 6,186 3-month LIBOR plus 1.40% 6.95% December 15, 2035 Home Federal Statutory September 2006 15,464 3-month LIBOR plus 1.65% 7.20% September 15, 2036 Monroe Bancorp Capital July 2006 3,093 3-month LIBOR plus 1.60% 6.86% October 7, 2036 Tower Capital Trust 3 December 2006 9,279 3-month LIBOR plus 1.69% 7.19% March 1, 2037 Monroe Bancorp Statutory March 2007 5,155 3-month LIBOR plus 1.60% 7.15% June 15, 2037 Great Lakes Statutory Trust III June 2007 8,248 3-month LIBOR plus 1.70% 7.25% September 15, 2037 Total $ 136,643 Subordinated Debentures Old National assumed $12.0 million of subordinated fixed-to-floating notes related to the acquisition of Anchor Bancorp, Inc. (MN). The subordinated debentures had a 5.75% fixed rate of interest through October 29, 2020. From October 30, 2020 to the October 30, 2025 maturity date, the debentures have a floating rate of interest equal to the three-month LIBOR rate plus 4.356%. Old National assumed $150.0 million of subordinated fixed rate notes related to the First Midwest merger. The subordinated debentures have a 5.875% fixed rate of interest through the September 29, 2026 maturity date. Leveraged Loans The leveraged loans are directly related to the NMTC structure. As part of the transaction structure, Old National has the right to sell its interest in the entity that received the leveraged loans at an agreed upon price to the leveraged lender at the end of the NMTC seven-year compliance period. See Note 9 to the consolidated financial statements for additional information on the Company’s NMTC investments. Finance Lease Liabilities Old National has long-term finance lease liabilities for certain banking centers and equipment totaling $21.3 million at June 30, 2023. See Note 7 to the consolidated financial statements for a maturity analysis of the Company’s finance lease liabilities.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following table summarizes the changes within each classification of AOCI, net of tax: (dollars in thousands) Unrealized Unrealized Gains and Defined Total Three Months Ended June 30, 2023 Balance at beginning of period $ (611,260) $ (106,966) $ 9,872 $ (4) $ (708,358) Other comprehensive income (loss) before (90,121) — 9,840 — (80,281) Amounts reclassified from AOCI to income (1) (12) 3,822 (23,808) 4 (19,994) Balance at end of period $ (701,393) $ (103,144) $ (4,096) $ — $ (808,633) Three Months Ended June 30, 2022 Balance at beginning of period $ (314,364) $ (16,727) $ (7,132) $ 24 $ (338,199) Other comprehensive income (loss) before (122,776) (108,266) (2,578) — (233,620) Amounts reclassified from AOCI to income (1) 65 2,794 (165) (8) 2,686 Balance at end of period $ (437,075) $ (122,199) $ (9,875) $ 16 $ (569,133) Six Months Ended June 30, 2023 Balance at beginning of period $ (642,346) $ (112,664) $ (31,549) $ 137 $ (786,422) Other comprehensive income (loss) before (62,902) 1,325 45,825 — (15,752) Amounts reclassified from AOCI to income (1) 3,855 8,195 (18,372) (137) (6,459) Balance at end of period $ (701,393) $ (103,144) $ (4,096) $ — $ (808,633) Six Months Ended June 30, 2022 Balance at beginning of period $ (2,950) $ — $ 543 $ 32 $ (2,375) Other comprehensive income (loss) before (433,929) (125,229) (9,748) — (568,906) Amounts reclassified from AOCI to income (1) (196) 3,030 (670) (16) 2,148 Balance at end of period $ (437,075) $ (122,199) $ (9,875) $ 16 $ (569,133) (1) See table below for details about reclassifications to income. The following table summarizes the amounts reclassified out of each component of AOCI for the three months ended June 30, 2023 and 2022: Three Months Ended (dollars in thousands) 2023 2022 Details about AOCI Components Amount Reclassified Affected Line Item in the Unrealized gains and losses on $ 17 $ (85) Debt securities gains (losses), net (5) 20 Income tax (expense) benefit $ 12 $ (65) Net income (loss) Unrealized gains and losses on $ (5,122) $ (3,692) Interest income (expense) 1,300 898 Income tax (expense) benefit $ (3,822) $ (2,794) Net income (loss) Gains and losses on hedges $ 32,112 $ 219 Interest income (expense) (8,304) (54) Income tax (expense) benefit $ 23,808 $ 165 Net income (loss) Amortization of defined benefit Actuarial gains (losses) $ (6) $ 10 Salaries and employee benefits 2 (2) Income tax (expense) benefit $ (4) $ 8 Net income (loss) Total reclassifications for the period $ 19,994 $ (2,686) Net income (loss) The following table summarizes the amounts reclassified out of each component of AOCI for the six months ended June 30, 2023 and 2022: Six Months Ended (dollars in thousands) 2023 2022 Details about AOCI Components Amount Reclassified Affected Line Item in the Unrealized gains and losses on $ (5,199) $ 257 Debt securities gains (losses), net 1,344 (61) Income tax (expense) benefit $ (3,855) $ 196 Net income (loss) Unrealized gains and losses on $ (10,951) $ (4,002) Interest income (expense) 2,756 972 Income tax (expense) benefit $ (8,195) $ (3,030) Net income (loss) Gains and losses on hedges $ 24,820 $ 888 Interest income (expense) (6,448) (218) Income tax (expense) benefit $ 18,372 $ 670 Net income (loss) Amortization of defined benefit Actuarial gains (losses) $ 182 $ 21 Salaries and employee benefits (45) (5) Income tax (expense) benefit $ 137 $ 16 Net income (loss) Total reclassifications for the period $ 6,459 $ (2,148) Net income (loss)

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Following is a summary of the major items comprising the differences in taxes from continuing operations computed at the federal statutory rate and as recorded in the consolidated statements of income: Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Provision at statutory rate of 21% $ 42,510 $ 29,389 $ 81,995 $ 21,766 Tax-exempt income: Tax-exempt interest (4,605) (3,413) (9,091) (6,406) Section 291/265 interest disallowance 532 38 918 66 Company-owned life insurance income (945) (938) (1,572) (1,656) Tax-exempt income (5,018) (4,313) (9,745) (7,996) State income taxes 8,552 4,085 16,693 758 Interim period effective rate adjustment 993 (3,967) (723) 3,073 Tax credit investments - federal (2,526) (1,292) (5,051) (2,561) Officer compensation limitation 1,040 402 2,080 651 Non-deductible FDIC premiums 2,037 885 4,147 1,371 Other, net (195) (225) (582) (812) Income tax expense (benefit) $ 47,393 $ 24,964 $ 88,814 $ 16,250 Effective tax rate 23.4 % 17.8 % 22.8 % 15.7 % The provision for income taxes was recorded at June 30, 2023 and 2022 based on the current estimate of the effective annual rate. The higher effective tax rate during the three and six months ended June 30, 2023 compared to the same periods in 2022 was primarily the result of an increase in pre-tax book income combined with smaller increases in tax-exempt income and tax credits. Other contributing factors were increases in non-deductible officer compensation and non-deductible FDIC premiums as well as the First Midwest merger in February 2022. Net Deferred Tax Assets Net deferred tax assets are included in other assets on the balance sheet. At June 30, 2023, net deferred tax assets totaled $431.2 million, compared to $435.8 million at December 31, 2022. The Company’s retained earnings at June 30, 2023 included an appropriation for acquired thrifts’ tax bad debt allowances totaling $58.6 million for which no provision for federal or state income taxes has been made. If in the future, this portion of retained earnings were distributed as a result of the liquidation of the Company or its subsidiaries, federal and state income taxes would be imposed at the then applicable rates. No valuation allowance was recorded at June 30, 2023 or December 31, 2022 because, based on current expectations, Old National believes it will generate sufficient income in future years to realize deferred tax assets. Old National has federal net operating loss carryforwards totaling $72.7 million at June 30, 2023 and $81.5 million at December 31, 2022. This federal net operating loss was acquired from the acquisition of Anchor BanCorp Wisconsin Inc. in 2016 and First Midwest in 2022. If not used, the federal net operating loss carryforwards will begin expiring in 2030 and later. Old National has recorded state net operating loss carryforwards totaling $118.5 million at June 30, 2023 and $124.4 million at December 31, 2022. If not used, the state net operating loss carryforwards will expire from 2027 to 2036. The federal and recorded state net operating loss carryforwards are subject to an annual limitation under Internal Revenue Code section 382. Old National believes that all of the federal and recorded state net operating loss carryforwards will be used prior to expiration.

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
	Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	DERIVATIVE FINANCIAL INSTRUMENTS As part of our overall interest rate risk management, Old National uses derivative instruments, including interest rate swaps, collars, caps, and floors. The notional amount does not represent amounts exchanged by the parties. The amount exchanged is determined by reference to the notional amount and the other terms of the individual agreements. Derivative instruments are recognized on the balance sheet at their fair value and are not reported on a net basis. Credit risk arises from the possible inability of counterparties to meet the terms of their contracts. Old National’s exposure is limited to the termination value of the contracts rather than the notional, principal, or contract amounts. There are provisions in our agreements with the counterparties that allow for certain unsecured credit exposure up to an agreed threshold. Exposures in excess of the agreed thresholds are collateralized. In addition, we minimize credit risk through credit approvals, limits, and monitoring procedures. Derivatives Designated as Hedges Subsequent changes in fair value for a hedging instrument that has been designated and qualifies as part of a hedging relationship are accounted for in the following manner: Cash flow hedges : changes in fair value are recognized as a component in other comprehensive income (loss). Fair value hedges : changes in fair value are recognized concurrently in earnings. As long as a hedging instrument is designated and the results of the effectiveness testing support that the instrument qualifies for hedge accounting treatment, 100% of the periodic changes in fair value of the hedging instrument are accounted for as outlined above. This is the case whether or not economic mismatches exist in the hedging relationship. As a result, there is no periodic measurement or recognition of ineffectiveness. Rather, the full impact of hedge gains and losses is recognized in the period in which the hedged transactions impact earnings. The change in fair value of the hedging instrument that is included in the assessment of hedge effectiveness is presented in the same income statement line item that is used to present the earnings effect of the hedged item. Cash Flow Hedges Interest rate swaps of certain borrowings were designated as cash flow hedges totaling $250.0 million notional amount at June 30, 2023 and $150.0 million notional amount at December 31, 2022. Interest rate collars and floors related to variable-rate commercial loan pools were designated as cash flow hedges totaling $1.4 billion notional amount at June 30, 2023 and $1.9 billion notional amount at December 31, 2022. The hedges were determined to be effective during all periods presented and we expect them to remain effective during the remaining terms. Old National has designated its interest rate collars as cash flow hedges. The structure of these instruments is such that Old National pays the counterparty an incremental amount if the collar index exceeds the cap rate. Conversely, Old National receives an incremental amount if the index falls below the floor rate. No payments are required if the collar index falls between the cap and floor rates. Old National has designated its interest rate floor transactions as cash flow hedges. The structure of these instruments is such that Old National receives an incremental amount if the index falls below the floor strike rate. No payments are required if the index remains above the floor strike rate. Fair Value Hedges Interest rate swaps of certain borrowings were designated as fair value hedges totaling $700.0 million notional amount at June 30, 2023 and $300.0 million notional amount at December 31, 2022. Interest rate swaps of certain available-for-sale investment securities were designated as fair value hedges totaling $910.0 million notional amount at both June 30, 2023 and December 31, 2022. The hedges were determined to be effective during all periods presented and we expect them to remain effective during the remaining terms. The following table summarizes Old National’s derivatives designated as hedges: June 30, 2023 December 31, 2022 Fair Value Fair Value (dollars in thousands) Notional Assets (1) Liabilities (2) Notional Assets (1) Liabilities (2) Cash flow hedges Interest rate collars and floors on loan pools $ 1,400,000 $ 2,169 $ 15,563 $ 1,900,000 $ 11,764 $ 47,859 Interest rate swaps on borrowings (3)(4) 250,000 — — 150,000 — — Fair value hedges Interest rate swaps on investment securities (3) 909,957 — — 909,957 — — Interest rate swaps on borrowings (3) 700,000 — — 300,000 — — Total $ 2,169 $ 15,563 $ 11,764 $ 47,859 (1) Derivative assets are included in other assets on the balance sheet. (2) Derivative liabilities are included in other liabilities on the balance sheet. (3) The fair values of certain counterparty interest rate swaps are zero due to the settlement of centrally cleared variation margin rules. (4) Gross totals include maturing LIBOR and replacement SOFR interest rate swaps executed as part of reference rate reform. The effect of derivative instruments in fair value hedging relationships on the consolidated statements of income were as follows: (dollars in thousands) Gain (Loss) Derivatives in Location of Gain or Gain (Loss) Hedged Items Location of Gain or Three Months Ended June 30, 2023 Interest rate contracts Interest income/(expense) $ (11,101) Fixed-rate debt Interest income/(expense) $ 10,956 Interest rate contracts Interest income/(expense) 24,846 Fixed-rate Interest income/(expense) (24,867) Total $ 13,745 $ (13,911) Three Months Ended Interest rate contracts Interest income/(expense) $ (2,524) Fixed-rate debt Interest income/(expense) $ 2,600 Interest rate contracts Interest income/(expense) 53,779 Fixed-rate Interest income/(expense) (53,762) Total $ 51,255 $ (51,162) Six Months Ended Interest rate contracts Interest income/(expense) $ (8,948) Fixed-rate debt Interest income/(expense) $ 8,738 Interest rate contracts Interest income/(expense) (38,269) Fixed-rate Interest income/(expense) 38,384 Total $ (47,217) $ 47,122 Six Months Ended Interest rate contracts Interest income/(expense) $ (7,357) Fixed-rate debt Interest income/(expense) $ 7,555 Interest rate contracts Interest income/(expense) 111,433 Fixed-rate Interest income/(expense) (111,791) Total $ 104,076 $ (104,236) The effect of derivative instruments in cash flow hedging relationships on the consolidated statements of income were as follows: Three Months Ended Three Months Ended (dollars in thousands) 2023 2022 2023 2022 Derivatives in Location of Gain or Gain (Loss) Gain (Loss) Interest rate contracts Interest income/(expense) $ 13,272 $ (3,418) $ 31,078 $ 219 Six Months Ended Six Months Ended 2023 2022 2023 2022 Derivatives in Location of Gain or Gain (Loss) Gain (Loss) Interest rate contracts Interest income/(expense) $ 19,875 $ (12,924) $ 23,441 $ 888 Amounts reported in AOCI related to cash flow hedges will be reclassified to interest income or interest expense as interest payments are received or paid on Old National’s derivative instruments. During the next 12 months, we estimate that $5.6 million will be reclassified to interest income and $8.9 million will be reclassified to interest expense. Derivatives Not Designated as Hedges Commitments to fund certain mortgage loans (interest rate lock commitments) and forward commitments for the future delivery of mortgage loans to third party investors are considered derivatives. These derivative contracts do not qualify for hedge accounting. At June 30, 2023, the notional amounts of the interest rate lock commitments were $45.2 million and forward commitments were $61.1 million. At December 31, 2022, the notional amounts of the interest rate lock commitments were $21.4 million and forward commitments were $30.3 million. It is our practice to enter into forward commitments for the future delivery of residential mortgage loans to third party investors when interest rate lock commitments are entered into in order to economically hedge the effect of changes in interest rates resulting from our commitment to fund the loans. Old National also enters into derivative instruments for the benefit of its clients. At June 30, 2023, the notional amounts of these customer derivative instruments and the offsetting counterparty derivative instruments were $5.6 billion and $8.2 billion, respectively. Derivative instruments as of June 30, 2023 include maturing LIBOR derivative instruments as well as replacement derivative instruments tied to SOFR executed as part of the reference rate reform. The total notional amounts of these replacement derivative instruments were $2.6 billion as of June 30, 2023. Remaining derivative instruments referencing LIBOR will mature after June 30, 2023. At December 31, 2022, customer derivative instruments and offsetting counterparty derivative instruments were $5.2 billion. These derivative contracts do not qualify for hedge accounting. These instruments include interest rate swaps, caps, and collars. Commonly, Old National will economically hedge significant exposures related to these derivative contracts entered into for the benefit of clients by entering into offsetting contracts with approved, reputable, independent counterparties with substantially matching terms. Old National enters into derivative financial instruments as part of its foreign currency risk management strategies. These derivative instruments consist of foreign currency forward contracts to accommodate the business needs of its clients. Old National does not designate these foreign currency forward contracts for hedge accounting treatment. The following table summarizes Old National’s derivatives not designated as hedges: June 30, 2023 December 31, 2022 Fair Value Fair Value (dollars in thousands) Notional Assets (1) Liabilities (2) Notional Assets (1) Liabilities (2) Interest rate lock commitments $ 45,216 $ 330 $ — $ 21,401 $ 93 $ — Forward mortgage loan contracts 61,084 164 — 30,330 32 — Customer interest rate swaps (4) 5,589,059 5,621 318,890 5,220,363 5,676 326,924 Counterparty interest rate swaps (3)(4) 8,206,655 175,581 5,662 5,220,363 151,111 5,711 Customer foreign currency forward contracts 12,851 441 22 8,341 253 42 Counterparty foreign currency forward contracts 12,894 18 262 8,297 72 168 Total $ 182,155 $ 324,836 $ 157,237 $ 332,845 (1) Derivative assets are included in other assets on the balance sheet. (2) Derivative liabilities are included in other liabilities on the balance sheet. (3) The fair values of certain counterparty interest rate swaps are zero due to the settlement of centrally cleared variation margin rules. (4) Gross totals include maturing LIBOR and replacement SOFR interest rate swaps executed as part of reference rate reform. The effect of derivatives not designated as hedging instruments on the consolidated statements of income were as follows: Three Months Ended (dollars in thousands) 2023 2022 Derivatives Not Designated as Location of Gain or (Loss) Gain (Loss) Interest rate contracts (1) Other income/(expense) $ 837 $ 449 Mortgage contracts Mortgage banking revenue 262 (1,503) Foreign currency contracts Other income/(expense) (12) 65 Total $ 1,087 $ (989) Six Months Ended 2023 2022 Derivatives Not Designated as Location of Gain or (Loss) Gain (Loss) Interest rate contracts (1) Other income/(expense) $ 699 $ 950 Mortgage contracts Mortgage banking revenue 369 (1,374) Foreign currency contracts Other income/(expense) (13) 38 Total $ 1,055 $ (386) (1) Includes the valuation differences between the customer and offsetting swaps.

Commitments, Contingencies, and

Commitments, Contingencies, and Financial Guarantees	6 Months Ended
	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies, and Financial Guarantees	COMMITMENTS, CONTINGENCIES, AND FINANCIAL GUARANTEES Litigation At June 30, 2023, there were certain legal proceedings pending against the Company and its subsidiaries in the ordinary course of business. While the outcome of any legal proceeding is inherently uncertain, based on information currently available, the Company’s management does not expect that any potential liabilities arising from pending legal matters will have a material adverse effect on the Company’s business, financial position, or results of operations. Credit-Related Financial Instruments Old National holds instruments, in the normal course of business with clients, that are considered financial guarantees and are recorded at fair value. Standby letters of credit guarantees are issued in connection with agreements made by clients to counterparties. Standby letters of credit are contingent upon failure of the client to perform the terms of the underlying contract. Credit risk associated with standby letters of credit is essentially the same as that associated with extending loans to clients and is subject to normal credit policies. The term of these standby letters of credit is typically one year or less. These commitments are not recorded in the consolidated financial statements. The following table summarizes Old National Bank’s unfunded loan commitments and standby letters of credit: (dollars in thousands) June 30, December 31, Unfunded loan commitments $ 9,380,354 $ 8,979,334 Standby letters of credit (1) 182,418 174,070 (1) Notional amount, which represents the maximum amount of future funding requirements. The carrying value was $0.9 million at June 30, 2023 and $0.8 million at December 31, 2022. At June 30, 2023, approximately 4% of the unfunded loan commitments had fixed rates, with the remainder having floating rates ranging from 0% to 22%. The allowance for unfunded loan commitments totaled $37.0 million at June 30, 2023 and $32.2 million at December 31, 2022. Old National is a party in risk participation transactions of interest rate swaps, which had total notional amounts of $441.9 million at June 30, 2023 and $398.9 million at December 31, 2022. Visa Class B Restricted Shares In 2008, Old National received Visa Class B restricted shares as part of Visa’s initial public offering. These shares are transferable only under limited circumstances until they can be converted into the publicly traded Class A common shares. This conversion will not occur until the final settlement of certain litigation for which Visa is indemnified by the holders of Visa’s Class B shares, including Old National. Visa funded an escrow account from its initial public offering to settle these litigation claims. Increases in litigation claims requiring Visa to fund the escrow account due to insufficient funds will result in a reduction of the conversion ratio of each Visa Class B share to unrestricted Class A shares. As of June 30, 2023, the conversion ratio was 1.5902. Based on the existing transfer restriction and the uncertainty of the outcome of the Visa litigation, the 65,466 Class B shares that Old National owns at June 30, 2023 are carried at a zero cost basis and are included in other assets with our equity securities that have no readily determinable fair value.

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value	FAIR VALUE Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair values: • Level 1 – Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2 – Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3 – Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. Old National used the following methods and significant assumptions to estimate the fair value of each type of financial instrument: Investment securities and equity securities : The fair values for investment securities and equity securities are determined by quoted market prices, if available (Level 1). For securities where quoted prices are not available, fair values are calculated based on market prices of similar securities (Level 2). For securities where quoted prices or market prices of similar securities are not available, fair values are calculated using discounted cash flows or other market indicators (Level 3). Discounted cash flows are calculated using swap and LIBOR curves plus spreads that adjust for loss severities, volatility, credit risk, and optionality. During times when trading is more liquid, broker quotes are used (if available) to validate the model. Rating agency and industry research reports as well as defaults and deferrals on individual securities are reviewed and incorporated into the calculations. Loans held for sale : The fair value of loans held for sale is determined using quoted prices for a similar asset, adjusted for specific attributes of that loan (Level 2). Derivative financial instruments : The fair values of derivative financial instruments are based on derivative valuation models using market data inputs as of the valuation date (Level 2). Recurring Basis Assets and liabilities measured at fair value on a recurring basis, including financial assets and liabilities for which we have elected the fair value option, are summarized below: Fair Value Measurements at June 30, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Equity securities $ 71,953 $ 71,953 $ — $ — Investment securities available-for-sale: U.S. Treasury 312,412 312,412 — — U.S. government-sponsored entities and agencies 1,174,356 — 1,174,356 — Mortgage-backed securities - Agency 4,097,771 — 4,097,771 — States and political subdivisions 598,782 — 598,782 — Pooled trust preferred securities 10,994 — 10,994 — Other securities 306,200 — 306,200 — Loans held for sale 114,369 — 114,369 — Derivative assets 184,324 — 184,324 — Financial Liabilities Derivative liabilities 340,399 — 340,399 — Fair Value Measurements at December 31, 2022 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Equity securities $ 52,507 $ 52,507 $ — $ — Investment securities available-for-sale: U.S. Treasury 200,927 200,927 — — U.S. government-sponsored entities and agencies 1,175,080 — 1,175,080 — Mortgage-backed securities - Agency 4,369,902 — 4,369,902 — States and political subdivisions 663,852 — 663,852 — Pooled trust preferred securities 10,811 — 10,811 — Other securities 353,140 — 353,140 — Loans held for sale 11,926 — 11,926 — Derivative assets 169,001 — 169,001 — Financial Liabilities Derivative liabilities 380,704 — 380,704 — Non-Recurring Basis Assets measured at fair value at June 30, 2023 on a non-recurring basis are summarized below: Fair Value Measurements at June 30, 2023 Using (dollars in thousands) Carrying Quoted Prices in Significant Significant Collateral Dependent Loans: Commercial loans $ 12,615 $ — $ — $ 12,615 Commercial real estate loans 85,891 — — 85,891 Foreclosed Assets: Commercial 1,560 — — 1,560 Commercial and commercial real estate loans that are deemed collateral dependent are valued using the discounted cash flows. The liquidation amounts are based on the fair value of the underlying collateral using the most recently available appraisals with certain adjustments made based on the type of property, age of appraisal, current status of the property, and other related factors to estimate the current value of the collateral. These commercial and commercial real estate loans had a principal amount of $127.9 million, with a valuation allowance of $29.4 million at June 30, 2023. Old National recorded provision expense associated with these loans totaling $7.9 million and $19.8 million for the three and six months ended June 30, 2023, respectively. Old National recorded provision expense associated with commercial and commercial real estate loans that were deemed collateral dependent totaling $12.8 million and $28.6 million for the three and six months ended June 30, 2022, respectively. Other real estate owned and other repossessed property is measured at fair value less costs to sell on a non-recurring basis and had a net carrying amount of $1.6 million at June 30, 2023. There were $0.1 million of write-downs on other real estate owned for the three and six months ended June 30, 2023. There were write-downs totaling $0.1 million and $0.3 million for the three and six months ended June 30, 2022, respectively. Loan servicing rights are evaluated for impairment based upon the fair value of the rights as compared to the carrying amount. If the carrying amount of an individual tranche exceeds fair value, impairment is recorded on that tranche so that the servicing asset is carried at fair value. Fair value is determined at a tranche level, based on market prices for comparable mortgage servicing contracts when available, or alternatively based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model utilizes a discount rate, weighted average prepayment speed, and other economic factors that market participants would use in estimating future net servicing income and that can be validated against available market data (Level 2). There was no valuation allowance for loan servicing rights with impairments at June 30, 2023 and no impairments or recoveries recorded during the three or six months ended June 30, 2023. Old National recorded immaterial recoveries associated with loan servicing rights during the three and six months ended June 30, 2022. Assets measured at fair value at December 31, 2022 on a non-recurring basis are summarized below: Fair Value Measurements at December 31, 2022 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Collateral Dependent Loans: Commercial loans $ 22,562 $ — $ — $ 22,562 Commercial real estate loans 48,026 — — 48,026 At December 31, 2022, commercial and commercial real estate loans that are deemed collateral dependent had a principal amount of $92.0 million, with a valuation allowance of $21.5 million. The table below provides quantitative information about significant unobservable inputs used in fair value measurements within Level 3 of the fair value hierarchy: (dollars in thousands) Fair Value Valuation Techniques Unobservable Input Range (Weighted Average) (1) June 30, 2023 Collateral Dependent Loans Commercial loans $ 12,615 Discounted Discount for type of property, 9% - 50% (35%) cash flow age of appraisal, and current status Commercial real estate loans 85,891 Discounted Discount for type of property, 0% - 45% (13%) cash flow age of appraisal, and current status Foreclosed Assets Commercial real estate 1,560 Fair value of Discount for type of property, 4% - 17% (6%) collateral age of appraisal, and current status December 31, 2022 Collateral Dependent Loans Commercial loans $ 22,562 Discounted Discount for type of property, 10% - 47% (28%) cash flow age of appraisal, and current status Commercial real estate loans 48,026 Discounted Discount for type of property, 1% - 26% (11%) cash flow age of appraisal, and current status (1) Unobservable inputs were weighted by the relative fair value of the instruments. Fair Value Option Old National may elect to report most financial instruments and certain other items at fair value on an instrument-by-instrument basis with changes in fair value reported in net income. After the initial adoption, the election is made at the acquisition of an eligible financial asset, financial liability, or firm commitment or when certain specified reconsideration events occur. The fair value election may not be revoked once an election is made. Loans Held For Sale Old National has elected the fair value option for loans held for sale. For these loans, interest income is recorded in the consolidated statements of income based on the contractual amount of interest income earned on the financial assets (except any that are on nonaccrual status). None of these loans are 90 days or more past due, nor are any on nonaccrual status. Interest income for loans held for sale is included in the income statement totaling $0.3 million and $0.5 million for the three and six months ended June 30, 2023, respectively, compared to $0.7 million and $1.2 million for the three and six months ended June 30, 2022, respectively. Newly originated conforming fixed-rate and adjustable-rate first mortgage loans are intended for sale and are hedged with derivative instruments. Old National has elected the fair value option to mitigate accounting mismatches in cases where hedge accounting is complex and to achieve operational simplification. The fair value option was not elected for loans held for investment. The difference between the aggregate fair value and the aggregate remaining principal balance for loans for which the fair value option has been elected was as follows: (dollars in thousands) Aggregate Fair Value Difference Contractual Principal June 30, 2023 Loans held for sale $ 114,369 $ 387 $ 113,982 December 31, 2022 Loans held for sale $ 11,926 $ 221 $ 11,705 Accrued interest at period end is included in the fair value of the instruments. The following table presents the amount of gains and losses from fair value changes included in income before income taxes for financial assets carried at fair value: (dollars in thousands) Other Interest Income Interest (Expense) Total Changes Three Months Ended June 30, 2023 Loans held for sale $ 229 $ — $ (7) $ 222 Three Months Ended June 30, 2022 Loans held for sale $ 278 $ 9 $ — $ 287 Six Months Ended June 30, 2023 Loans held for sale $ 176 $ — $ (10) $ 166 Six Months Ended June 30, 2022 Loans held for sale $ (1,065) $ 9 $ (3) $ (1,059) Financial Instruments Not Carried at Fair Value The carrying amounts and estimated exit price fair values of financial instruments not carried at fair value were as follows: Fair Value Measurements at June 30, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Cash, due from banks, money market, $ 1,197,886 $ 1,197,886 $ — $ — Investment securities held-to-maturity: U.S. government-sponsored entities and agencies 822,517 — 655,446 — Mortgage-backed securities - Agency 1,070,687 — 928,496 — State and political subdivisions 1,161,793 — 1,019,116 — Loans, net: Commercial 9,569,141 — — 9,330,160 Commercial real estate 13,312,233 — — 12,907,098 Residential real estate 6,664,059 — — 5,831,513 Consumer credit 2,586,485 — — 2,537,633 Accrued interest receivable 205,198 801 54,449 149,948 Financial Liabilities Deposits: Noninterest-bearing demand deposits $ 10,532,838 $ 10,532,838 $ — $ — Checking, NOW, savings, and money market 20,432,813 20,432,813 — — Time deposits 5,265,664 — 5,209,887 — Federal funds purchased and interbank borrowings 136,060 136,060 — — Securities sold under agreements to repurchase 311,447 311,447 — — FHLB advances 4,771,183 — 4,526,920 — Other borrowings 815,318 — 781,468 — Accrued interest payable 42,897 — 42,897 — Standby letters of credit 949 — — 949 Off-Balance Sheet Financial Instruments Commitments to extend credit $ — $ — $ — $ 3,621 Fair Value Measurements at December 31, 2022 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Cash, due from banks, money market, $ 728,412 $ 728,412 $ — $ — Investment securities held-to-maturity: U.S. government-sponsored entities and agencies 819,168 — 656,358 — Mortgage-backed securities - Agency 1,106,817 — 982,963 — State and political subdivisions 1,163,162 — 1,004,361 — Loans, net: Commercial 9,386,862 — — 9,066,583 Commercial real estate 12,317,825 — — 11,867,851 Residential real estate 6,438,525 — — 5,372,491 Consumer credit 2,676,758 — — 2,557,115 Accrued interest receivable 190,521 758 52,081 137,682 Financial Liabilities Deposits: Noninterest-bearing demand deposits $ 11,930,798 $ 11,930,798 $ — $ — Checking, NOW, savings, and money market 20,056,252 20,056,252 — — Time deposits 3,013,780 — 2,976,389 — Federal funds purchased and interbank borrowings 581,489 581,489 — — Securities sold under agreements to repurchase 432,804 432,804 — — FHLB advances 3,829,018 — 3,739,780 — Other borrowings 743,003 — 703,156 — Accrued interest payable 19,547 — 19,547 — Standby letters of credit 755 — — 755 Off-Balance Sheet Financial Instruments Commitments to extend credit $ — $ — $ — $ 3,666 The methods utilized to measure the fair value of financial instruments at June 30, 2023 and December 31, 2022 represent an approximation of exit price, however, an actual exit price may differ.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Pay vs Performance Disclosure
Net income (loss)	$ 155,036	$ 146,600	$ 114,985	$ (27,586)	$ 301,636	$ 87,399

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation	BASIS OF PRESENTATION The accompanying unaudited consolidated financial statements include the accounts of Old National Bancorp and its wholly-owned subsidiaries (hereinafter collectively referred to as “Old National”) and have been prepared in conformity with accounting principles generally accepted in the United States of America and prevailing practices within the banking industry. Such principles require management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and the disclosures of contingent assets and liabilities at the date of the financial statements and amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, the consolidated financial statements contain all the normal and recurring adjustments necessary for a fair statement of the financial position of Old National as of June 30, 2023 and December 31, 2022, and the results of its operations for the three and six months ended June 30, 2023 and 2022. Interim results do not necessarily represent annual results. Certain information and disclosures normally included in notes to consolidated annual financial statements prepared in accordance with GAAP have been condensed or omitted in this Quarterly Report on Form 10-Q pursuant to SEC rules and regulations. These financial statements should be read in conjunction with Old National’s Annual Report on Form 10-K for the year ended December 31, 2022. All intercompany transactions and balances have been eliminated. Certain prior year amounts have been reclassified to conform to the current presentation. Such reclassifications had no effect on prior period net income or shareholders’ equity and were insignificant amounts.
Financial Difficulty Modifications	Financial Difficulty Modifications Any loans that are modified are reviewed by Old National to identify if a financial difficulty modification has occurred, which is when Old National Bank modifies a loan related to a borrower experiencing financial difficulties. Terms may be modified to fit the ability of the borrower to repay in line with its current financial status. The modification of the terms of such loans includes one or a combination of the following: a reduction of the stated interest rate of the loan, an extension of the maturity date, a permanent reduction of the recorded investment of the loan, or an other-than-insignificant payment delay. The adoption of ASU 2022-02 on January 1, 2023 eliminated the recognition and measurement of TDRs and enhanced disclosures for modifications to loans related to borrowers experiencing financial difficulties. See Note 2 to the consolidated financial statements for additional detail regarding the adoption of ASU 2022-02. Other than the changes for financial difficulty modifications, there have been no material changes from the significant accounting policies disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Accounting Guidance Adopted in 2023 FASB ASC 805 – In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities From Contracts With Customers , to address diversity in practice and inconsistency related to the accounting for revenue contracts with customers acquired in a business combination. The amendments require that the acquirer recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Topic 606. At the acquisition date, an acquirer should account for the related revenue contracts in accordance with Topic 606 as if it had originated the contracts. The ASU also provides certain practical expedients for acquirers when recognizing and measuring acquired contract assets and liabilities. The amendments in this update are effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. Entities should apply the amendments prospectively to business combinations that occur after the effective date. The adoption of this guidance on January 1, 2023 did not have a material impact on the consolidated financial statements. FASB ASC 815 – In March 2022, the FASB issued ASU 2022-01, Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method , to expand the current single-layer method of electing hedge accounting to allow multiple hedged layers of a single closed portfolio under the method and rename the last-of-layer method the portfolio layer method. The amendments in this update are effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. The adoption of this guidance on January 1, 2023 did not have a material impact on the consolidated financial statements. FASB ASC 326 – In March 2022, the FASB issued ASU 2022-02, Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures , to eliminate the TDR recognition and measurement guidance and, instead, require that an entity evaluate (consistent with the accounting for other loan modifications) whether the modification represents a new loan or a continuation of an existing loan. The amendments also enhance existing disclosure requirements and introduce new requirements related to certain modifications of receivables made to borrowers experiencing financial difficulty. The amendments require that an entity disclose current-period gross charge-offs by year of origination for financing receivables and net investment in leases within the vintage disclosures required by ASC 326. The amendments in this update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Old National adopted the provision in ASU 2022-02 related to the recognition and measurement of TDRs on a prospective basis on January 1, 2023, which did not have a material impact on the consolidated financial statements. FASB ASC 848 – In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , which provides temporary, optional guidance to ease the potential burden in accounting for, or recognizing the effects of, the transition away from LIBOR or other interbank offered rate on financial reporting. The guidance is applicable only to contracts or hedge accounting relationships that reference LIBOR or another reference rate expected to be discontinued. In December 2022, the FASB issued ASU 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848 , which defers the sunset date of relief provisions within Topic 848 from December 31, 2022 to December 31, 2024. The objective of the guidance in Topic 848 is to provide relief during the transition period. The amendments in this ASU are effective March 12, 2020 through December 31, 2024. Old National believes the adoption of this guidance on activities subsequent to June 30, 2023 will not have a material impact on the consolidated financial statements. Accounting Guidance Pending Adoption FASB ASC 820 – In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions , to clarify that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and, therefore, is not considered in measuring fair value. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements. FASB ASC 842 – In March 2023, the FASB issued ASU 2023-01, Leases (Topic 842): Common Control Arrangements , which requires all entities to amortize leasehold improvements associated with common control leases over the useful life to the common control group. This ASU is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for both interim and annual financial statements that have not yet been made available for issuance. If an entity adopts the amendments in an interim period, it must adopt them as of the beginning of the fiscal year that includes that interim period. Transition can be done either retrospectively or prospectively. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements. FASB ASC 323 – In March 2023, the FASB issued ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method , which allows reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. This ASU is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for all entities in any interim period. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements.

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2023
Earnings Per Share [Abstract]
Summary of Table Reconciling Basic and Diluted Net Income Per Share	The following table presents the calculation of basic and diluted net income per common share: Three Months Ended Six Months Ended (dollars and shares in thousands, except per share data) 2023 2022 2023 2022 Net income $ 155,036 $ 114,985 $ 301,636 $ 87,399 Preferred dividends (4,033) (4,033) (8,067) (6,050) Net income applicable to common shares $ 151,003 $ 110,952 $ 293,569 $ 81,349 Weighted average common shares outstanding: Weighted average common shares outstanding (basic) 290,559 290,862 290,822 259,108 Effect of dilutive securities: Restricted stock 707 1,014 1,047 1,136 Stock appreciation rights — 5 1 9 Weighted average diluted shares outstanding 291,266 291,881 291,870 260,253 Basic Net Income Per Common Share $ 0.52 $ 0.38 $ 1.01 $ 0.31 Diluted Net Income Per Common Share $ 0.52 $ 0.38 $ 1.01 $ 0.31

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Fair Value of Available-for-Sale Investment Securities Portfolio	The following table summarizes the amortized cost and fair value of the available-for-sale and held-to-maturity investment securities portfolios and the corresponding amounts of gross unrealized gains, unrealized losses, and basis adjustments in AOCI and gross unrecognized gains and losses. (dollars in thousands) Amortized Unrealized Unrealized Basis Adjustments (1) Fair June 30, 2023 Available-for-Sale U.S. Treasury $ 364,824 $ — $ (9,245) $ (43,167) $ 312,412 U.S. government-sponsored entities and agencies 1,448,873 — (201,623) (72,894) 1,174,356 Mortgage-backed securities - Agency 4,760,921 123 (663,273) — 4,097,771 States and political subdivisions 623,196 844 (25,258) — 598,782 Pooled trust preferred securities 13,791 — (2,797) — 10,994 Other securities 339,653 117 (33,570) — 306,200 Total available-for-sale securities $ 7,551,258 $ 1,084 $ (935,766) $ (116,061) $ 6,500,515 Held-to-Maturity U.S. government-sponsored entities and agencies $ 822,517 $ — $ (167,071) $ — $ 655,446 Mortgage-backed securities - Agency 1,070,687 — (142,191) — 928,496 States and political subdivisions 1,161,943 437 (143,114) — 1,019,266 Allowance for securities held-to-maturity (150) — — — (150) Total held-to-maturity securities $ 3,054,997 $ 437 $ (452,376) $ — $ 2,603,058 December 31, 2022 Available-for-Sale U.S. Treasury $ 253,148 $ 5 $ (5,189) $ (47,037) $ 200,927 U.S. government-sponsored entities and agencies 1,451,736 — (169,248) (107,408) 1,175,080 Mortgage-backed securities - Agency 4,986,354 976 (617,428) — 4,369,902 States and political subdivisions 688,159 1,789 (26,096) — 663,852 Pooled trust preferred securities 13,783 — (2,972) — 10,811 Other securities 379,423 258 (26,541) — 353,140 Total available-for-sale securities $ 7,772,603 $ 3,028 $ (847,474) $ (154,445) $ 6,773,712 Held-to-Maturity U.S. government-sponsored entities and agencies $ 819,168 $ — $ (162,810) $ — $ 656,358 Mortgage-backed securities - Agency 1,106,817 — (123,854) — 982,963 States and political subdivisions 1,163,312 221 (159,022) — 1,004,511 Allowance for securities held-to-maturity (150) — — — (150) Total held-to-maturity securities $ 3,089,147 $ 221 $ (445,686) $ — $ 2,643,682 (1) Basis adjustments represent the cumulative fair value adjustments included in the carrying amounts of fixed-rate investment securities assets in fair value hedging arrangements .
Schedule of Proceeds from Sales or Calls and Realized Gain and Losses of Available-for-Sale Investment Securities and Other Securities	Proceeds from sales or calls of available-for-sale investment securities and the resulting realized gains and realized losses were as follows: Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Proceeds $ 24,933 $ 23,234 $ 82,888 $ 73,347 Realized gains 39 48 948 511 Realized losses (22) (133) (6,147) (254)
Expected Maturities of Investment Securities Portfolio	Weighted average yield is based on amortized cost. June 30, 2023 (dollars in thousands) Amortized Fair Weighted Maturity Available-for-Sale Within one year $ 242,424 $ 238,951 3.93 % One to five years 1,621,101 1,478,764 2.77 Five to ten years 3,926,306 3,374,584 2.35 Beyond ten years 1,761,427 1,408,216 2.43 Total $ 7,551,258 $ 6,500,515 2.51 % Held-to-Maturity One to five years 162,082 135,763 2.71 % Five to ten years 888,640 780,437 2.61 Beyond ten years 2,004,275 1,686,858 2.73 Total $ 3,054,997 $ 2,603,058 2.69 %
Available-for-Sale and Held-to-Maturity Investment Securities with Unrealized Losses by Aggregated Major Security Type and Length of Time in Continuous Unrealized Loss Position	The following table summarizes the available-for-sale investment securities with unrealized losses for which an allowance for credit losses has not been recorded by aggregated major security type and length of time in a continuous unrealized loss position: Less than 12 months 12 months or longer Total (dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Losses June 30, 2023 Available-for-Sale U.S. Treasury $ 124,751 $ (258) $ 187,661 $ (8,987) $ 312,412 $ (9,245) U.S. government-sponsored entities 14,732 (264) 1,159,624 (201,359) 1,174,356 (201,623) Mortgage-backed securities - Agency 402,696 (19,217) 3,677,906 (644,056) 4,080,602 (663,273) States and political subdivisions 168,144 (1,406) 264,829 (23,852) 432,973 (25,258) Pooled trust preferred securities — — 10,994 (2,797) 10,994 (2,797) Other securities 25,133 (498) 265,688 (33,072) 290,821 (33,570) Total available-for-sale $ 735,456 $ (21,643) $ 5,566,702 $ (914,123) $ 6,302,158 $ (935,766) December 31, 2022 Available-for-Sale U.S. Treasury $ 130,967 $ (3,264) $ 66,992 $ (1,925) $ 197,959 $ (5,189) U.S. government-sponsored entities 454,854 (75,795) 720,226 (93,453) 1,175,080 (169,248) Mortgage-backed securities - Agency 3,207,319 (358,507) 1,116,205 (258,921) 4,323,524 (617,428) States and political subdivisions 414,813 (25,555) 2,703 (541) 417,516 (26,096) Pooled trust preferred securities — — 10,811 (2,972) 10,811 (2,972) Other securities 257,775 (17,045) 75,309 (9,496) 333,084 (26,541) Total available-for-sale $ 4,465,728 $ (480,166) $ 1,992,246 $ (367,308) $ 6,457,974 $ (847,474)
Schedule of Held-to-Maturity Investment Securities with Unrecognized Losses	The following table summarizes the held-to-maturity investment securities with unrecognized losses aggregated by major security type and length of time in a continuous loss position: Less than 12 months 12 months or longer Total (dollars in thousands) Fair Unrecognized Fair Unrecognized Fair Unrecognized June 30, 2023 Held-to-Maturity U.S. government-sponsored entities $ 81,251 $ (8,138) $ 574,195 $ (158,933) $ 655,446 $ (167,071) Mortgage-backed securities - Agency 244,643 (24,690) 683,853 (117,501) 928,496 (142,191) States and political subdivisions 38,302 (394) 948,627 (142,720) 986,929 (143,114) Total held-to-maturity $ 364,196 $ (33,222) $ 2,206,675 $ (419,154) $ 2,570,871 $ (452,376) December 31, 2022 Held-to-Maturity U.S. government-sponsored entities 354,293 (110,523) 302,066 (52,287) 656,359 (162,810) Mortgage-backed securities - Agency 367,849 (42,438) 615,114 (81,416) 982,963 (123,854) States and political subdivisions 838,689 (127,355) 135,573 (31,667) 974,262 (159,022) Total held-to-maturity $ 1,560,831 $ (280,316) $ 1,052,753 $ (165,370) $ 2,613,584 $ (445,686)

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	6 Months Ended
	Jun. 30, 2023
Receivables [Abstract]
Schedule of Composition of Loans and Impact of Adoption	The portfolio segment reclassifications follow: Balance Sheet Portfolio After (dollars in thousands) June 30, 2023 Loans: Commercial $ 9,698,241 $ (227,414) $ 9,470,827 Commercial real estate 13,450,209 (162,841) 13,287,368 BBCC N/A 390,255 390,255 Residential real estate 6,684,480 — 6,684,480 Consumer 2,599,543 (2,599,543) N/A Indirect N/A 1,003,287 1,003,287 Direct N/A 565,950 565,950 Home equity N/A 1,030,306 1,030,306 Total $ 32,432,473 $ — $ 32,432,473 December 31, 2022 Loans: Commercial $ 9,508,904 $ (210,280) $ 9,298,624 Commercial real estate 12,457,070 (158,322) 12,298,748 BBCC N/A 368,602 368,602 Residential real estate 6,460,441 — 6,460,441 Consumer 2,697,226 (2,697,226) N/A Indirect N/A 1,034,257 1,034,257 Direct N/A 629,186 629,186 Home equity N/A 1,033,783 1,033,783 Total $ 31,123,641 $ — $ 31,123,641
Schedule of Composition of Loans	The composition of loans by portfolio segment follows: (dollars in thousands) June 30, December 31, Commercial (1) $ 9,470,827 $ 9,298,624 Commercial real estate 13,287,368 12,298,748 BBCC 390,255 368,602 Residential real estate 6,684,480 6,460,441 Indirect 1,003,287 1,034,257 Direct 565,950 629,186 Home equity 1,030,306 1,033,783 Total loans 32,432,473 31,123,641 Allowance for credit losses on loans (300,555) (303,671) Net loans $ 32,131,918 $ 30,819,970 (1) Includes direct finance leases of $176.7 million at June 30, 2023 and $188.1 million at December 31, 2022.
Schedule of Activity in Allowance for Loan Losses	Old National’s activity in the allowance for credit losses on loans by portfolio segment was as follows: (dollars in thousands) Balance at Allowance Charge-offs Recoveries Provision Balance at Three Months Ended Commercial $ 125,768 $ — $ (8,331) $ 1,814 $ 8,152 $ 127,403 Commercial real estate 135,348 — (2,458) 1,029 2,978 136,897 BBCC 2,316 — (94) 31 523 2,776 Residential real estate 20,207 — (218) 53 379 20,421 Indirect 1,434 — (402) 612 (237) 1,407 Direct 6,766 — (2,600) 637 (48) 4,755 Home equity 6,872 — (228) 63 189 6,896 Total $ 298,711 $ — $ (14,331) $ 4,239 $ 11,936 $ 300,555 Three Months Ended Commercial $ 99,471 $ — $ (1,344) $ 781 $ 3,911 $ 102,819 Commercial real estate 140,490 — (318) 320 1,310 141,802 BBCC 2,069 — (20) 91 (76) 2,064 Residential real estate 17,252 — (137) 130 2,484 19,729 Indirect 1,648 — (528) 320 201 1,641 Direct 14,450 — (1,722) 676 1,008 14,412 Home equity 5,127 — (27) 20 416 5,536 Total $ 280,507 $ — $ (4,096) $ 2,338 $ 9,254 $ 288,003 Six Months Ended Commercial $ 120,612 $ — $ (20,754) $ 2,097 $ 25,448 $ 127,403 Commercial real estate 138,244 — (3,647) 1,292 1,008 136,897 BBCC 2,431 — (122) 104 363 2,776 Residential real estate 21,916 — (241) 125 (1,379) 20,421 Indirect 1,532 — (1,599) 1,024 450 1,407 Direct 12,116 — (5,838) 1,218 (2,741) 4,755 Home equity 6,820 — (310) 130 256 6,896 Total $ 303,671 $ — $ (32,511) $ 5,990 $ 23,405 $ 300,555 Six Months Ended Commercial $ 27,232 $ 35,040 $ (3,223) $ 1,013 $ 42,757 $ 102,819 Commercial real estate 64,004 42,601 (824) 502 35,519 141,802 BBCC 2,458 — (48) 148 (494) 2,064 Residential real estate 9,347 136 (324) 570 10,000 19,729 Indirect 1,743 — (1,012) 542 368 1,641 Direct 528 31 (3,251) 1,270 15,834 14,412 Home equity 2,029 723 (78) 183 2,679 5,536 Total $ 107,341 $ 78,531 $ (8,760) $ 4,228 $ 106,663 $ 288,003 Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Allowance for credit losses on unfunded loan commitments: Balance at beginning of period $ 34,156 $ 22,046 $ 32,188 $ 10,879 Provision for credit losses on unfunded commitments — — — 11,013 Provision for unfunded loan commitments 2,851 (80) 4,819 74 Balance at end of period $ 37,007 $ 21,966 $ 37,007 $ 21,966
Schedule of Risk Category of Loans and Amortized Cost	The following table summarizes the amortized cost of term loans by risk category of commercial, commercial real estate, and BBCC loans by loan portfolio segment, class of loan, and origination year: Origination Year Revolving to Term (dollars in thousands) 2023 2022 2021 2020 2019 Prior Revolving Total June 30, 2023 Commercial: Risk Rating: Pass $ 1,108,984 $ 1,860,049 $ 1,307,700 $ 671,792 $ 604,875 $ 673,184 $ 2,185,539 $ 465,649 $ 8,877,772 Criticized 28,284 84,240 15,092 23,548 29,772 32,376 74,437 25,524 313,273 Classified: Substandard 17,252 16,246 36,914 36,303 4,671 22,508 52,794 37,482 224,170 Nonaccrual — 349 — 585 824 6,681 1,064 2,210 11,713 Doubtful — 24,047 12,536 1,832 583 4,901 — — 43,899 Total $ 1,154,520 $ 1,984,931 $ 1,372,242 $ 734,060 $ 640,725 $ 739,650 $ 2,313,834 $ 530,865 $ 9,470,827 Commercial real estate: Risk Rating: Pass $ 1,188,882 $ 3,335,715 $ 2,791,366 $ 1,852,690 $ 1,083,211 $ 1,511,576 $ 84,574 $ 677,072 $ 12,525,086 Criticized 28,324 30,372 31,377 32,238 54,738 88,116 3,893 23,353 292,411 Classified: Substandard 14,685 71,131 17,505 19,748 79,998 44,060 — 49,825 296,952 Nonaccrual — 866 18,463 1,064 456 16,081 — 3,272 40,202 Doubtful — 3,802 31,341 9,249 39,559 48,766 — — 132,717 Total $ 1,231,891 $ 3,441,886 $ 2,890,052 $ 1,914,989 $ 1,257,962 $ 1,708,599 $ 88,467 $ 753,522 $ 13,287,368 BBCC: Risk Rating: Pass $ 52,620 $ 77,831 $ 53,068 $ 44,433 $ 32,200 $ 28,305 $ 69,107 $ 16,637 $ 374,201 Criticized 987 1,445 1,081 360 1,045 483 1,836 1,626 8,863 Classified: Substandard 10 497 629 49 226 836 484 856 3,587 Nonaccrual 37 313 323 128 235 668 — 644 2,348 Doubtful — 408 219 — 55 74 500 — 1,256 Total $ 53,654 $ 80,494 $ 55,320 $ 44,970 $ 33,761 $ 30,366 $ 71,927 $ 19,763 $ 390,255 Origination Year Revolving to Term (dollars in thousands) 2022 2021 2020 2019 2018 Prior Revolving Total December 31, 2022 Commercial: Risk Rating: Pass $ 2,388,618 $ 1,754,364 $ 796,340 $ 738,208 $ 362,986 $ 388,617 $ 1,988,763 $ 329,119 $ 8,747,015 Criticized 40,856 30,661 63,557 33,490 9,195 5,312 61,036 4,327 248,434 Classified: Substandard 37,223 47,522 16,540 22,925 4,844 21,204 67,402 25,143 242,803 Nonaccrual 3,627 1,453 566 — — — 1,634 6,623 13,903 Doubtful 2,821 17,604 3,720 8,005 5,968 8,351 — — 46,469 Total $ 2,473,145 $ 1,851,604 $ 880,723 $ 802,628 $ 382,993 $ 423,484 $ 2,118,835 $ 365,212 $ 9,298,624 Commercial real estate: Risk Rating: Pass $ 3,066,960 $ 2,828,758 $ 1,989,000 $ 1,219,025 $ 675,572 $ 1,018,719 $ 57,818 $ 689,553 $ 11,545,405 Criticized 75,306 34,422 22,569 82,637 86,504 56,864 — 23,282 381,584 Classified: Substandard 46,231 16,928 24,319 78,468 57,824 21,591 — 4,108 249,469 Nonaccrual 3,151 9,541 5,014 — 2,312 22,155 — 3,257 45,430 Doubtful 1,934 38,386 10,011 4,605 1,523 20,401 — — 76,860 Total $ 3,193,582 $ 2,928,035 $ 2,050,913 $ 1,384,735 $ 823,735 $ 1,139,730 $ 57,818 $ 720,200 $ 12,298,748 BBCC: Risk Rating: Pass $ 90,341 $ 64,161 $ 52,304 $ 36,868 $ 23,618 $ 11,333 $ 60,016 $ 18,881 $ 357,522 Criticized 1,504 525 368 692 353 — 1,006 1,603 6,051 Classified: Substandard 811 143 — 421 — — 543 682 2,600 Nonaccrual 42 37 118 — 429 284 — 639 1,549 Doubtful 40 107 439 157 64 73 — — 880 Total $ 92,738 $ 64,973 $ 53,229 $ 38,138 $ 24,464 $ 11,690 $ 61,565 $ 21,805 $ 368,602 Origination Year Revolving to Term (dollars in thousands) 2023 2022 2021 2020 2019 Prior Revolving Total June 30, 2023 Residential real estate: Risk Rating: Performing $ 261,285 $ 1,480,926 $ 1,948,505 $ 1,709,893 $ 459,251 $ 785,089 $ — $ 143 $ 6,645,092 Nonperforming — 1,892 2,727 4,200 3,378 27,191 — — 39,388 Total $ 261,285 $ 1,482,818 $ 1,951,232 $ 1,714,093 $ 462,629 $ 812,280 $ — $ 143 $ 6,684,480 Indirect: Risk Rating: Performing $ 187,644 $ 425,822 $ 202,230 $ 98,742 $ 57,413 $ 27,397 $ — $ 83 $ 999,331 Nonperforming 65 1,107 798 1,082 438 466 — — 3,956 Total $ 187,709 $ 426,929 $ 203,028 $ 99,824 $ 57,851 $ 27,863 $ — $ 83 $ 1,003,287 Direct: Risk Rating: Performing $ 53,778 $ 110,107 $ 121,141 $ 77,169 $ 41,509 $ 80,155 $ 74,945 $ 1,348 $ 560,152 Nonperforming 21 275 489 562 463 3,970 8 10 5,798 Total $ 53,799 $ 110,382 $ 121,630 $ 77,731 $ 41,972 $ 84,125 $ 74,953 $ 1,358 $ 565,950 Home equity: Risk Rating: Performing $ — $ 1,328 $ 843 $ 859 $ 943 $ 6,573 $ 988,669 $ 16,859 $ 1,016,074 Nonperforming — 51 130 82 1,057 4,776 1,961 6,175 14,232 Total $ — $ 1,379 $ 973 $ 941 $ 2,000 $ 11,349 $ 990,630 $ 23,034 $ 1,030,306 Origination Year Revolving to Term 2022 2021 2020 2019 2018 Prior Revolving Total December 31, 2022 Residential real estate: Risk Rating: Performing $ 1,327,168 $ 1,945,792 $ 1,825,762 $ 478,529 $ 136,260 $ 712,175 $ 7 $ 88 $ 6,425,781 Nonperforming 59 529 861 873 1,826 30,512 — — 34,660 Total $ 1,327,227 $ 1,946,321 $ 1,826,623 $ 479,402 $ 138,086 $ 742,687 $ 7 $ 88 $ 6,460,441 Indirect: Risk Rating: Performing $ 504,410 $ 249,407 $ 144,265 $ 82,304 $ 31,484 $ 19,095 $ — $ 62 $ 1,031,027 Nonperforming 348 1,074 645 531 304 328 — — 3,230 Total $ 504,758 $ 250,481 $ 144,910 $ 82,835 $ 31,788 $ 19,423 $ — $ 62 $ 1,034,257 Direct: Risk Rating: Performing $ 132,934 $ 164,126 $ 77,406 $ 57,919 $ 45,299 $ 59,212 $ 87,622 $ 671 $ 625,189 Nonperforming 115 851 614 205 327 1,526 5 354 3,997 Total $ 133,049 $ 164,977 $ 78,020 $ 58,124 $ 45,626 $ 60,738 $ 87,627 $ 1,025 $ 629,186 Home equity: Risk Rating: Performing $ 919 $ 896 $ 1,849 $ 1,497 $ 983 $ 11,646 $ 990,001 $ 14,792 $ 1,022,583 Nonperforming 166 160 166 446 794 4,308 1,698 3,462 11,200 Total $ 1,085 $ 1,056 $ 2,015 $ 1,943 $ 1,777 $ 15,954 $ 991,699 $ 18,254 $ 1,033,783 The following table summarizes the gross charge-offs of loans by loan portfolio segment and origination year: Origination Year (dollars in thousands) 2023 2022 2021 2020 2019 Prior Revolving Total Three Months Ended June 30, 2023 Commercial $ — $ 2,100 $ 5,931 $ 120 $ — $ — $ 180 $ 8,331 Commercial real estate — — — — — 2,458 — 2,458 BBCC — 47 — 47 — — — 94 Residential real estate — — — — — 218 — 218 Indirect 10 164 124 48 16 40 — 402 Direct — 430 588 172 414 195 801 2,600 Home equity — — — — — 228 — 228 Total gross charge-offs $ 10 $ 2,741 $ 6,643 $ 387 $ 430 $ 3,139 $ 981 $ 14,331 Six Months Ended June 30, 2023 Commercial $ — $ 2,100 $ 11,161 $ 120 $ 6,789 $ 239 $ 345 $ 20,754 Commercial real estate — 54 735 400 — 2,458 — 3,647 BBCC — 47 28 47 — — — 122 Residential real estate — — — — — 241 — 241 Indirect 10 678 554 141 127 89 — 1,599 Direct — 901 1,382 458 741 390 1,966 5,838 Home equity — — — — — 310 — 310 Total gross charge-offs $ 10 $ 3,780 $ 13,860 $ 1,166 $ 7,657 $ 3,727 $ 2,311 $ 32,511
Schedule of Past Due Financing Receivables	The following table presents the aging of the amortized cost basis in past due loans by class of loans: (dollars in thousands) 30-59 Days 60-89 Days Past Due Total Current Total June 30, 2023 Commercial $ 4,164 $ 3,719 $ 15,138 $ 23,021 $ 9,447,806 $ 9,470,827 Commercial real estate 7,760 10,441 35,906 54,107 13,233,261 13,287,368 BBCC 868 847 74 1,789 388,466 390,255 Residential 18,543 4,350 11,131 34,024 6,650,456 6,684,480 Indirect 4,296 1,162 840 6,298 996,989 1,003,287 Direct 3,225 775 1,257 5,257 560,693 565,950 Home equity 6,834 1,473 4,420 12,727 1,017,579 1,030,306 Total $ 45,690 $ 22,767 $ 68,766 $ 137,223 $ 32,295,250 $ 32,432,473 December 31, 2022 Commercial $ 14,147 $ 4,801 $ 11,080 $ 30,028 $ 9,268,596 $ 9,298,624 Commercial real estate 47,240 1,312 32,892 81,444 12,217,304 12,298,748 BBCC 730 365 603 1,698 366,904 368,602 Residential 24,181 5,033 11,753 40,967 6,419,474 6,460,441 Indirect 6,302 2,118 958 9,378 1,024,879 1,034,257 Direct 5,404 2,118 1,928 9,450 619,736 629,186 Home equity 6,585 1,966 4,707 13,258 1,020,525 1,033,783 Total $ 104,589 $ 17,713 $ 63,921 $ 186,223 $ 30,937,418 $ 31,123,641
Schedule of Nonaccrual and Past Due Loans	The following table presents the amortized cost basis of loans on nonaccrual status and loans past due 90 days or more and still accruing by class of loan: June 30, 2023 December 31, 2022 (dollars in thousands) Nonaccrual Nonaccrual Past Due Nonaccrual Nonaccrual Past Due Commercial $ 55,612 $ 12,666 $ 92 $ 60,372 $ 7,873 $ 152 Commercial real estate 172,919 44,218 173 122,290 33,445 — BBCC 3,604 — — 2,429 — — Residential 39,388 — — 34,660 — 1,808 Indirect 3,956 — — 3,230 — 28 Direct 5,798 — 25 3,997 — 133 Home equity 14,232 — 13 11,200 — 529 Total $ 295,509 $ 56,884 $ 303 $ 238,178 $ 41,318 $ 2,650 Type of Collateral (dollars in thousands) Real Blanket Investment Auto Other June 30, 2023 Commercial $ 14,450 $ 37,285 $ 652 $ 535 $ 366 Commercial real estate 156,570 3,908 1,246 — 6,259 BBCC 2,267 1,301 — 36 — Residential 39,388 — — — — Indirect — — — 3,956 — Direct 4,973 6 — 253 32 Home equity 14,232 — — — — Total loans $ 231,880 $ 42,500 $ 1,898 $ 4,780 $ 6,657 December 31, 2022 Commercial $ 8,962 $ 42,754 $ 2,690 $ 1,611 $ 980 Commercial real estate 108,871 — 1,718 — 6,411 BBCC 1,939 478 — 12 — Residential 34,660 — — — — Indirect — — — 3,230 — Direct 2,991 13 — 232 23 Home equity 11,200 — — — — Total loans $ 168,623 $ 43,245 $ 4,408 $ 5,085 $ 7,414
Schedule of Activity in Trouble Debt Restructurings	The following table presents the amortized cost basis of financial difficulty modifications at June 30, 2023 that were modified during the three and six months ended June 30, 2023 by class of loans and type of modification: (dollars in thousands) Term Total Three Months Ended June 30, 2023 Commercial $ 1,231 0.0 % Commercial real estate 12,449 0.1 % Total $ 13,680 0.0 % Six Months Ended June 30, 2023 Commercial $ 18,517 0.2 % Commercial real estate 19,280 0.1 % Total $ 37,797 0.1 % Old National closely monitors the performance of financial difficulty modifications to understand the effectiveness of its efforts. The following table presents the performance of loans identified as financial difficulty modifications at June 30, 2023: (dollars in thousands) 30-59 Days 60-89 Days Past Due Total Current Total June 30, 2023 Commercial $ — $ — $ 2,600 $ 2,600 $ 15,917 $ 18,517 Commercial real estate — 5,537 — 5,537 13,743 19,280 Total $ — $ 5,537 $ 2,600 $ 8,137 $ 29,660 $ 37,797 The following table summarizes the nature of the financial difficulty modifications during the three and six months ended June 30, 2023 by class of loans: (dollars in thousands) Weighted- Three Months Ended June 30, 2023 Commercial 7.0 Commercial real estate 6.0 Total 6.1 Six Months Ended June 30, 2023 Commercial 6.8 Commercial real estate 5.8 Total 6.3

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2023
Leases [Abstract]
Schedule of Components of Lease Expense	The components of lease expense were as follows: Affected Line Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Operating lease cost Occupancy/Equipment expense $ 7,469 $ 8,558 $ 16,107 $ 13,666 Finance lease cost: Amortization of right-of-use assets Occupancy expense 737 648 1,428 1,323 Interest on lease liabilities Interest expense 184 103 353 210 Sub-lease income Occupancy expense (102) (174) (162) (302) Total $ 8,288 $ 9,135 $ 17,726 $ 14,897
Schedule of Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to leases was as follows: (dollars in thousands) June 30, December 31, Operating Leases Operating lease right-of-use assets $ 184,700 $ 189,714 Operating lease liabilities 206,178 211,964 Finance Leases Premises and equipment, net 20,435 10,799 Other borrowings 21,346 13,469 Weighted-Average Remaining Lease Term (in Years) Operating leases 8.7 9.1 Finance leases 10.5 7.2 Weighted-Average Discount Rate Operating leases 2.92 % 2.88 % Finance leases 3.84 % 3.30 %
Schedule of Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows: Six Months Ended (dollars in thousands) 2023 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 15,752 $ 13,705 Operating cash flows from finance leases 353 210 Financing cash flows from finance leases 1,265 1,210
Schedule of Maturity Analysis of Lease Liability by Lease Classification	The following table presents a maturity analysis of the Company’s lease liability by lease classification at June 30, 2023: (dollars in thousands) Operating Finance 2023 $ 15,993 $ 1,611 2024 31,241 3,278 2025 29,621 3,301 2026 28,575 2,075 2027 27,604 2,079 Thereafter 101,741 13,964 Total undiscounted lease payments 234,775 26,308 Amounts representing interest (28,597) (4,962) Lease liability $ 206,178 $ 21,346

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Carrying Amount of Goodwill	The following table presents the changes in the carrying amount of goodwill: Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Balance at beginning of period $ 1,998,716 $ 1,997,157 $ 1,998,716 $ 1,036,994 Acquisitions and adjustments — (5,623) — 954,540 Balance at end of period $ 1,998,716 $ 1,991,534 $ 1,998,716 $ 1,991,534
Schedule of Gross Carrying Amounts and Accumulated Amortization of Other Intangible Assets	The gross carrying amounts and accumulated amortization of other intangible assets were as follows: (dollars in thousands) Gross Accumulated Net June 30, 2023 Core deposit $ 143,511 $ (63,521) $ 79,990 Customer trust relationships 52,621 (18,452) 34,169 Total other intangible assets $ 196,132 $ (81,973) $ 114,159 December 31, 2022 Core deposit $ 170,642 $ (80,951) $ 89,691 Customer trust relationships 56,243 (19,529) 36,714 Total other intangible assets $ 226,885 $ (100,480) $ 126,405
Schedule of Estimated Amortization Expense for Future Years	Estimated amortization expense for future years is as follows: (dollars in thousands) 2023 remaining $ 11,909 2024 21,239 2025 18,358 2026 15,555 2027 12,867 Thereafter 34,231 Total $ 114,159

Qualified Affordable Housing _2

Qualified Affordable Housing Projects and Other Tax Credit Investments (Tables)	6 Months Ended
	Jun. 30, 2023
Investments in Affordable Housing Projects [Abstract]
Schedule of Qualified Affordable Housing Projects and Other Tax Credit Investments	The following table summarizes Old National’s investments in qualified affordable housing projects and other tax credit investments: (dollars in thousands) June 30, 2023 December 31, 2022 Investment Accounting Method Investment Unfunded Commitment (1) Investment Unfunded LIHTC Proportional amortization $ 90,164 $ 53,327 $ 84,428 $ 55,754 FHTC Equity 19,797 10,016 19,316 9,588 NMTC Consolidation 47,728 — 51,912 — Renewable Energy Equity 608 — 1,099 — Total $ 158,297 $ 63,343 $ 156,755 $ 65,342 (1) All commitments will be paid by Old National by December 31, 2027. The following table summarizes the amortization expense and tax benefit recognized for Old National’s qualified affordable housing projects and other tax credit investments: (dollars in thousands) Amortization Expense (1) Tax Expense (Benefit) Recognized (2) Three Months Ended June 30, 2023 LIHTC $ 1,463 $ (1,908) FHTC 424 (512) NMTC 2,092 (2,611) Renewable Energy 246 — Total $ 4,225 $ (5,031) Three Months Ended June 30, 2022 LIHTC $ 1,240 $ (1,650) FHTC 215 (263) NMTC 1,100 (1,375) Renewable Energy 210 — Total $ 2,765 $ (3,288) Six Months Ended June 30, 2023 LIHTC $ 2,927 $ (3,817) FHTC 848 (1,024) NMTC 4,183 (5,222) Renewable Energy 492 — Total $ 8,450 $ (10,063) Six Months Ended June 30, 2022 LIHTC $ 2,493 $ (3,300) FHTC 420 (514) NMTC 2,201 (2,750) Renewable Energy 420 — Total $ 5,534 $ (6,564) (1) The amortization expense for the LIHTC investments is included in our income tax expense. The amortization expense for the FHTC, NMTC, and Renewable Energy tax credits is included in noninterest expense. (2) All of the tax benefits recognized are included in our income tax expense. The tax benefit recognized for the FHTC, NMTC, and Renewable Energy investments primarily reflects the tax credits generated from the investments and excludes the net tax expense (benefit) and deferred tax liability of the investments’ income (loss).

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	6 Months Ended
	Jun. 30, 2023
Securities Sold under Agreements to Repurchase [Abstract]
Schedule of Securities Sold Under Agreements to Repurchase and Weighted-Average Interest Rates	The following table presents securities sold under agreements to repurchase and related weighted-average interest rates: At or for the Six Months Ended June 30, (dollars in thousands) 2023 2022 Outstanding at period end $ 311,447 $ 476,173 Average amount outstanding during the period 376,298 458,459 Maximum amount outstanding at any month-end during the period 430,537 509,275 Weighted-average interest rate: During the period 0.90 % 0.08 % At period end 1.14 % 0.08 %
Schedule of Remaining Contractual Maturity of Secured Borrowings and Class of Collateral Pledged Under Repurchase Agreements	The following table presents the contractual maturity of our secured borrowings and class of collateral pledged: At June 30, 2023 Remaining Contractual Maturity of the Agreements (dollars in thousands) Overnight and Continuous Up to 30-90 Days Greater Than 90 days Total Repurchase Agreements: U.S. Treasury and agency securities $ 311,447 $ — $ — $ — $ 311,447 Total $ 311,447 $ — $ — $ — $ 311,447

Federal Home Loan Bank Advanc_2

Federal Home Loan Bank Advances (Tables)	6 Months Ended
	Jun. 30, 2023
Federal Home Loan Banks [Abstract]
Summary of FHLB Advances	The following table summarizes Old National Bank’s FHLB advances: (dollars in thousands) June 30, December 31, FHLB advances (fixed rates 0.00% to 5.49% and variable rates 5.09% to 5.18%) maturing September 2023 to September 2042 $ 4,800,528 $ 3,850,677 Fair value hedge basis adjustments and unamortized (29,345) (21,659) Total $ 4,771,183 $ 3,829,018
Summary of Contractual Maturities of FHLB Advances	Contractual maturities of FHLB advances at June 30, 2023 were as follows: (dollars in thousands) Due in 2023 $ 100,000 Due in 2024 25,243 Due in 2025 550,285 Due in 2026 100,000 Thereafter 4,025,000 Fair value hedge basis adjustments and unamortized prepayment fees (29,345) Total $ 4,771,183

Other Borrowings (Tables)

Other Borrowings (Tables)	6 Months Ended
	Jun. 30, 2023
Other Liabilities Disclosure [Abstract]
Summary of Other Borrowings	The following table summarizes Old National’s other borrowings: (dollars in thousands) June 30, December 31, Old National Bancorp: Senior unsecured notes (fixed rate 4.125%) maturing August 2024 $ 175,000 $ 175,000 Unamortized debt issuance costs related to senior unsecured notes (169) (247) Subordinated debentures (fixed rate 5.875%) maturing September 2026 150,000 150,000 Junior subordinated debentures (variable rates of 6.86% to 8.88%) maturing July 2031 to September 2037 136,643 136,643 Other basis adjustments 20,785 23,363 Old National Bank: Finance lease liabilities 21,346 13,469 Subordinated debentures (variable rate 9.66%) maturing October 2025 12,000 12,000 Leveraged loans for NMTC (fixed rates of 1.00% to 1.43%) maturing December 2046 to June 2060 143,745 143,187 Other (1) 155,968 89,588 Total other borrowings $ 815,318 $ 743,003 (1) Includes overnight borrowings to collateralize certain derivative positions totaling $155.1 million at June 30, 2023 and $88.0 million at December 31, 2022. The following table summarizes the terms of our outstanding junior subordinated debentures at June 30, 2023: (dollars in thousands) Rate at June 30, Name of Trust Issuance Date Issuance Rate Maturity Date Bridgeview Statutory Trust I July 2001 $ 15,464 3-month LIBOR plus 3.58% 8.88% July 31, 2031 Bridgeview Capital Trust II December 2002 15,464 3-month LIBOR plus 3.35% 8.61% January 7, 2033 First Midwest Capital Trust I November 2003 37,825 6.95% fixed 6.95% December 1, 2033 St. Joseph Capital Trust II March 2005 5,155 3-month LIBOR plus 1.75% 7.26% March 17, 2035 Northern States Statutory Trust I September 2005 10,310 3-month LIBOR plus 1.80% 7.35% September 15, 2035 Anchor Capital Trust III August 2005 5,000 3-month LIBOR plus 1.55% 7.09% September 30, 2035 Great Lakes Statutory Trust II December 2005 6,186 3-month LIBOR plus 1.40% 6.95% December 15, 2035 Home Federal Statutory September 2006 15,464 3-month LIBOR plus 1.65% 7.20% September 15, 2036 Monroe Bancorp Capital July 2006 3,093 3-month LIBOR plus 1.60% 6.86% October 7, 2036 Tower Capital Trust 3 December 2006 9,279 3-month LIBOR plus 1.69% 7.19% March 1, 2037 Monroe Bancorp Statutory March 2007 5,155 3-month LIBOR plus 1.60% 7.15% June 15, 2037 Great Lakes Statutory Trust III June 2007 8,248 3-month LIBOR plus 1.70% 7.25% September 15, 2037 Total $ 136,643 The following table summarizes Old National Bank’s unfunded loan commitments and standby letters of credit: (dollars in thousands) June 30, December 31, Unfunded loan commitments $ 9,380,354 $ 8,979,334 Standby letters of credit (1) 182,418 174,070 (1) Notional amount, which represents the maximum amount of future funding requirements. The carrying value was $0.9 million at June 30, 2023 and $0.8 million at December 31, 2022.
Summary of Contractual Maturities of Other Borrowings	Contractual maturities of other borrowings at June 30, 2023 were as follows: (dollars in thousands) Due in 2023 $ 156,314 Due in 2024 177,609 Due in 2025 14,696 Due in 2026 151,529 Due in 2027 1,587 Thereafter 292,059 Unamortized debt issuance costs and other basis adjustments 21,524 Total $ 815,318

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Schedule of AOCI	The following table summarizes the changes within each classification of AOCI, net of tax: (dollars in thousands) Unrealized Unrealized Gains and Defined Total Three Months Ended June 30, 2023 Balance at beginning of period $ (611,260) $ (106,966) $ 9,872 $ (4) $ (708,358) Other comprehensive income (loss) before (90,121) — 9,840 — (80,281) Amounts reclassified from AOCI to income (1) (12) 3,822 (23,808) 4 (19,994) Balance at end of period $ (701,393) $ (103,144) $ (4,096) $ — $ (808,633) Three Months Ended June 30, 2022 Balance at beginning of period $ (314,364) $ (16,727) $ (7,132) $ 24 $ (338,199) Other comprehensive income (loss) before (122,776) (108,266) (2,578) — (233,620) Amounts reclassified from AOCI to income (1) 65 2,794 (165) (8) 2,686 Balance at end of period $ (437,075) $ (122,199) $ (9,875) $ 16 $ (569,133) Six Months Ended June 30, 2023 Balance at beginning of period $ (642,346) $ (112,664) $ (31,549) $ 137 $ (786,422) Other comprehensive income (loss) before (62,902) 1,325 45,825 — (15,752) Amounts reclassified from AOCI to income (1) 3,855 8,195 (18,372) (137) (6,459) Balance at end of period $ (701,393) $ (103,144) $ (4,096) $ — $ (808,633) Six Months Ended June 30, 2022 Balance at beginning of period $ (2,950) $ — $ 543 $ 32 $ (2,375) Other comprehensive income (loss) before (433,929) (125,229) (9,748) — (568,906) Amounts reclassified from AOCI to income (1) (196) 3,030 (670) (16) 2,148 Balance at end of period $ (437,075) $ (122,199) $ (9,875) $ 16 $ (569,133) (1) See table below for details about reclassifications to income.
Reclassifications out of AOCI	The following table summarizes the amounts reclassified out of each component of AOCI for the three months ended June 30, 2023 and 2022: Three Months Ended (dollars in thousands) 2023 2022 Details about AOCI Components Amount Reclassified Affected Line Item in the Unrealized gains and losses on $ 17 $ (85) Debt securities gains (losses), net (5) 20 Income tax (expense) benefit $ 12 $ (65) Net income (loss) Unrealized gains and losses on $ (5,122) $ (3,692) Interest income (expense) 1,300 898 Income tax (expense) benefit $ (3,822) $ (2,794) Net income (loss) Gains and losses on hedges $ 32,112 $ 219 Interest income (expense) (8,304) (54) Income tax (expense) benefit $ 23,808 $ 165 Net income (loss) Amortization of defined benefit Actuarial gains (losses) $ (6) $ 10 Salaries and employee benefits 2 (2) Income tax (expense) benefit $ (4) $ 8 Net income (loss) Total reclassifications for the period $ 19,994 $ (2,686) Net income (loss) The following table summarizes the amounts reclassified out of each component of AOCI for the six months ended June 30, 2023 and 2022: Six Months Ended (dollars in thousands) 2023 2022 Details about AOCI Components Amount Reclassified Affected Line Item in the Unrealized gains and losses on $ (5,199) $ 257 Debt securities gains (losses), net 1,344 (61) Income tax (expense) benefit $ (3,855) $ 196 Net income (loss) Unrealized gains and losses on $ (10,951) $ (4,002) Interest income (expense) 2,756 972 Income tax (expense) benefit $ (8,195) $ (3,030) Net income (loss) Gains and losses on hedges $ 24,820 $ 888 Interest income (expense) (6,448) (218) Income tax (expense) benefit $ 18,372 $ 670 Net income (loss) Amortization of defined benefit Actuarial gains (losses) $ 182 $ 21 Salaries and employee benefits (45) (5) Income tax (expense) benefit $ 137 $ 16 Net income (loss) Total reclassifications for the period $ 6,459 $ (2,148) Net income (loss)

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Summary of Differences in Taxes from Continuing Operations Computed at Statutory Rate	Following is a summary of the major items comprising the differences in taxes from continuing operations computed at the federal statutory rate and as recorded in the consolidated statements of income: Three Months Ended Six Months Ended (dollars in thousands) 2023 2022 2023 2022 Provision at statutory rate of 21% $ 42,510 $ 29,389 $ 81,995 $ 21,766 Tax-exempt income: Tax-exempt interest (4,605) (3,413) (9,091) (6,406) Section 291/265 interest disallowance 532 38 918 66 Company-owned life insurance income (945) (938) (1,572) (1,656) Tax-exempt income (5,018) (4,313) (9,745) (7,996) State income taxes 8,552 4,085 16,693 758 Interim period effective rate adjustment 993 (3,967) (723) 3,073 Tax credit investments - federal (2,526) (1,292) (5,051) (2,561) Officer compensation limitation 1,040 402 2,080 651 Non-deductible FDIC premiums 2,037 885 4,147 1,371 Other, net (195) (225) (582) (812) Income tax expense (benefit) $ 47,393 $ 24,964 $ 88,814 $ 16,250 Effective tax rate 23.4 % 17.8 % 22.8 % 15.7 %

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Interest Rate Derivatives	The following table summarizes Old National’s derivatives designated as hedges: June 30, 2023 December 31, 2022 Fair Value Fair Value (dollars in thousands) Notional Assets (1) Liabilities (2) Notional Assets (1) Liabilities (2) Cash flow hedges Interest rate collars and floors on loan pools $ 1,400,000 $ 2,169 $ 15,563 $ 1,900,000 $ 11,764 $ 47,859 Interest rate swaps on borrowings (3)(4) 250,000 — — 150,000 — — Fair value hedges Interest rate swaps on investment securities (3) 909,957 — — 909,957 — — Interest rate swaps on borrowings (3) 700,000 — — 300,000 — — Total $ 2,169 $ 15,563 $ 11,764 $ 47,859 (1) Derivative assets are included in other assets on the balance sheet. (2) Derivative liabilities are included in other liabilities on the balance sheet. (3) The fair values of certain counterparty interest rate swaps are zero due to the settlement of centrally cleared variation margin rules. (4) Gross totals include maturing LIBOR and replacement SOFR interest rate swaps executed as part of reference rate reform.
Schedule of Derivative Instruments Effect on Consolidated Statement of Income	The effect of derivative instruments in fair value hedging relationships on the consolidated statements of income were as follows: (dollars in thousands) Gain (Loss) Derivatives in Location of Gain or Gain (Loss) Hedged Items Location of Gain or Three Months Ended June 30, 2023 Interest rate contracts Interest income/(expense) $ (11,101) Fixed-rate debt Interest income/(expense) $ 10,956 Interest rate contracts Interest income/(expense) 24,846 Fixed-rate Interest income/(expense) (24,867) Total $ 13,745 $ (13,911) Three Months Ended Interest rate contracts Interest income/(expense) $ (2,524) Fixed-rate debt Interest income/(expense) $ 2,600 Interest rate contracts Interest income/(expense) 53,779 Fixed-rate Interest income/(expense) (53,762) Total $ 51,255 $ (51,162) Six Months Ended Interest rate contracts Interest income/(expense) $ (8,948) Fixed-rate debt Interest income/(expense) $ 8,738 Interest rate contracts Interest income/(expense) (38,269) Fixed-rate Interest income/(expense) 38,384 Total $ (47,217) $ 47,122 Six Months Ended Interest rate contracts Interest income/(expense) $ (7,357) Fixed-rate debt Interest income/(expense) $ 7,555 Interest rate contracts Interest income/(expense) 111,433 Fixed-rate Interest income/(expense) (111,791) Total $ 104,076 $ (104,236) The effect of derivative instruments in cash flow hedging relationships on the consolidated statements of income were as follows: Three Months Ended Three Months Ended (dollars in thousands) 2023 2022 2023 2022 Derivatives in Location of Gain or Gain (Loss) Gain (Loss) Interest rate contracts Interest income/(expense) $ 13,272 $ (3,418) $ 31,078 $ 219 Six Months Ended Six Months Ended 2023 2022 2023 2022 Derivatives in Location of Gain or Gain (Loss) Gain (Loss) Interest rate contracts Interest income/(expense) $ 19,875 $ (12,924) $ 23,441 $ 888 The effect of derivatives not designated as hedging instruments on the consolidated statements of income were as follows: Three Months Ended (dollars in thousands) 2023 2022 Derivatives Not Designated as Location of Gain or (Loss) Gain (Loss) Interest rate contracts (1) Other income/(expense) $ 837 $ 449 Mortgage contracts Mortgage banking revenue 262 (1,503) Foreign currency contracts Other income/(expense) (12) 65 Total $ 1,087 $ (989) Six Months Ended 2023 2022 Derivatives Not Designated as Location of Gain or (Loss) Gain (Loss) Interest rate contracts (1) Other income/(expense) $ 699 $ 950 Mortgage contracts Mortgage banking revenue 369 (1,374) Foreign currency contracts Other income/(expense) (13) 38 Total $ 1,055 $ (386) (1) Includes the valuation differences between the customer and offsetting swaps.
Summary of Derivatives Not Designated as Hedging Instruments	The following table summarizes Old National’s derivatives not designated as hedges: June 30, 2023 December 31, 2022 Fair Value Fair Value (dollars in thousands) Notional Assets (1) Liabilities (2) Notional Assets (1) Liabilities (2) Interest rate lock commitments $ 45,216 $ 330 $ — $ 21,401 $ 93 $ — Forward mortgage loan contracts 61,084 164 — 30,330 32 — Customer interest rate swaps (4) 5,589,059 5,621 318,890 5,220,363 5,676 326,924 Counterparty interest rate swaps (3)(4) 8,206,655 175,581 5,662 5,220,363 151,111 5,711 Customer foreign currency forward contracts 12,851 441 22 8,341 253 42 Counterparty foreign currency forward contracts 12,894 18 262 8,297 72 168 Total $ 182,155 $ 324,836 $ 157,237 $ 332,845 (1) Derivative assets are included in other assets on the balance sheet. (2) Derivative liabilities are included in other liabilities on the balance sheet. (3) The fair values of certain counterparty interest rate swaps are zero due to the settlement of centrally cleared variation margin rules. (4) Gross totals include maturing LIBOR and replacement SOFR interest rate swaps executed as part of reference rate reform.

Commitments, Contingencies, a_2

Commitments, Contingencies, and Financial Guarantees (Tables)	6 Months Ended
	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Summary of Loan Commitments	The following table summarizes Old National’s other borrowings: (dollars in thousands) June 30, December 31, Old National Bancorp: Senior unsecured notes (fixed rate 4.125%) maturing August 2024 $ 175,000 $ 175,000 Unamortized debt issuance costs related to senior unsecured notes (169) (247) Subordinated debentures (fixed rate 5.875%) maturing September 2026 150,000 150,000 Junior subordinated debentures (variable rates of 6.86% to 8.88%) maturing July 2031 to September 2037 136,643 136,643 Other basis adjustments 20,785 23,363 Old National Bank: Finance lease liabilities 21,346 13,469 Subordinated debentures (variable rate 9.66%) maturing October 2025 12,000 12,000 Leveraged loans for NMTC (fixed rates of 1.00% to 1.43%) maturing December 2046 to June 2060 143,745 143,187 Other (1) 155,968 89,588 Total other borrowings $ 815,318 $ 743,003 (1) Includes overnight borrowings to collateralize certain derivative positions totaling $155.1 million at June 30, 2023 and $88.0 million at December 31, 2022. The following table summarizes the terms of our outstanding junior subordinated debentures at June 30, 2023: (dollars in thousands) Rate at June 30, Name of Trust Issuance Date Issuance Rate Maturity Date Bridgeview Statutory Trust I July 2001 $ 15,464 3-month LIBOR plus 3.58% 8.88% July 31, 2031 Bridgeview Capital Trust II December 2002 15,464 3-month LIBOR plus 3.35% 8.61% January 7, 2033 First Midwest Capital Trust I November 2003 37,825 6.95% fixed 6.95% December 1, 2033 St. Joseph Capital Trust II March 2005 5,155 3-month LIBOR plus 1.75% 7.26% March 17, 2035 Northern States Statutory Trust I September 2005 10,310 3-month LIBOR plus 1.80% 7.35% September 15, 2035 Anchor Capital Trust III August 2005 5,000 3-month LIBOR plus 1.55% 7.09% September 30, 2035 Great Lakes Statutory Trust II December 2005 6,186 3-month LIBOR plus 1.40% 6.95% December 15, 2035 Home Federal Statutory September 2006 15,464 3-month LIBOR plus 1.65% 7.20% September 15, 2036 Monroe Bancorp Capital July 2006 3,093 3-month LIBOR plus 1.60% 6.86% October 7, 2036 Tower Capital Trust 3 December 2006 9,279 3-month LIBOR plus 1.69% 7.19% March 1, 2037 Monroe Bancorp Statutory March 2007 5,155 3-month LIBOR plus 1.60% 7.15% June 15, 2037 Great Lakes Statutory Trust III June 2007 8,248 3-month LIBOR plus 1.70% 7.25% September 15, 2037 Total $ 136,643 The following table summarizes Old National Bank’s unfunded loan commitments and standby letters of credit: (dollars in thousands) June 30, December 31, Unfunded loan commitments $ 9,380,354 $ 8,979,334 Standby letters of credit (1) 182,418 174,070 (1) Notional amount, which represents the maximum amount of future funding requirements. The carrying value was $0.9 million at June 30, 2023 and $0.8 million at December 31, 2022.

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis, including financial assets and liabilities for which we have elected the fair value option, are summarized below: Fair Value Measurements at June 30, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Equity securities $ 71,953 $ 71,953 $ — $ — Investment securities available-for-sale: U.S. Treasury 312,412 312,412 — — U.S. government-sponsored entities and agencies 1,174,356 — 1,174,356 — Mortgage-backed securities - Agency 4,097,771 — 4,097,771 — States and political subdivisions 598,782 — 598,782 — Pooled trust preferred securities 10,994 — 10,994 — Other securities 306,200 — 306,200 — Loans held for sale 114,369 — 114,369 — Derivative assets 184,324 — 184,324 — Financial Liabilities Derivative liabilities 340,399 — 340,399 — Fair Value Measurements at December 31, 2022 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Equity securities $ 52,507 $ 52,507 $ — $ — Investment securities available-for-sale: U.S. Treasury 200,927 200,927 — — U.S. government-sponsored entities and agencies 1,175,080 — 1,175,080 — Mortgage-backed securities - Agency 4,369,902 — 4,369,902 — States and political subdivisions 663,852 — 663,852 — Pooled trust preferred securities 10,811 — 10,811 — Other securities 353,140 — 353,140 — Loans held for sale 11,926 — 11,926 — Derivative assets 169,001 — 169,001 — Financial Liabilities Derivative liabilities 380,704 — 380,704 —
Schedule of Assets Measured at Fair Value on a Non-Recurring Basis	Assets measured at fair value at June 30, 2023 on a non-recurring basis are summarized below: Fair Value Measurements at June 30, 2023 Using (dollars in thousands) Carrying Quoted Prices in Significant Significant Collateral Dependent Loans: Commercial loans $ 12,615 $ — $ — $ 12,615 Commercial real estate loans 85,891 — — 85,891 Foreclosed Assets: Commercial 1,560 — — 1,560 Assets measured at fair value at December 31, 2022 on a non-recurring basis are summarized below: Fair Value Measurements at December 31, 2022 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Collateral Dependent Loans: Commercial loans $ 22,562 $ — $ — $ 22,562 Commercial real estate loans 48,026 — — 48,026
Schedule of Quantitative Information about Significant Unobservable Inputs Used in Fair Value Measurements	The table below provides quantitative information about significant unobservable inputs used in fair value measurements within Level 3 of the fair value hierarchy: (dollars in thousands) Fair Value Valuation Techniques Unobservable Input Range (Weighted Average) (1) June 30, 2023 Collateral Dependent Loans Commercial loans $ 12,615 Discounted Discount for type of property, 9% - 50% (35%) cash flow age of appraisal, and current status Commercial real estate loans 85,891 Discounted Discount for type of property, 0% - 45% (13%) cash flow age of appraisal, and current status Foreclosed Assets Commercial real estate 1,560 Fair value of Discount for type of property, 4% - 17% (6%) collateral age of appraisal, and current status December 31, 2022 Collateral Dependent Loans Commercial loans $ 22,562 Discounted Discount for type of property, 10% - 47% (28%) cash flow age of appraisal, and current status Commercial real estate loans 48,026 Discounted Discount for type of property, 1% - 26% (11%) cash flow age of appraisal, and current status (1) Unobservable inputs were weighted by the relative fair value of the instruments.
Schedule of Difference Between the Aggregate Fair Value and the Aggregate Remaining Principal Balance	The difference between the aggregate fair value and the aggregate remaining principal balance for loans for which the fair value option has been elected was as follows: (dollars in thousands) Aggregate Fair Value Difference Contractual Principal June 30, 2023 Loans held for sale $ 114,369 $ 387 $ 113,982 December 31, 2022 Loans held for sale $ 11,926 $ 221 $ 11,705 The following table presents the amount of gains and losses from fair value changes included in income before income taxes for financial assets carried at fair value: (dollars in thousands) Other Interest Income Interest (Expense) Total Changes Three Months Ended June 30, 2023 Loans held for sale $ 229 $ — $ (7) $ 222 Three Months Ended June 30, 2022 Loans held for sale $ 278 $ 9 $ — $ 287 Six Months Ended June 30, 2023 Loans held for sale $ 176 $ — $ (10) $ 166 Six Months Ended June 30, 2022 Loans held for sale $ (1,065) $ 9 $ (3) $ (1,059)
Carrying Amounts and Estimated Fair Values of Financial Instruments, Not Carried at Fair Value	The carrying amounts and estimated exit price fair values of financial instruments not carried at fair value were as follows: Fair Value Measurements at June 30, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Cash, due from banks, money market, $ 1,197,886 $ 1,197,886 $ — $ — Investment securities held-to-maturity: U.S. government-sponsored entities and agencies 822,517 — 655,446 — Mortgage-backed securities - Agency 1,070,687 — 928,496 — State and political subdivisions 1,161,793 — 1,019,116 — Loans, net: Commercial 9,569,141 — — 9,330,160 Commercial real estate 13,312,233 — — 12,907,098 Residential real estate 6,664,059 — — 5,831,513 Consumer credit 2,586,485 — — 2,537,633 Accrued interest receivable 205,198 801 54,449 149,948 Financial Liabilities Deposits: Noninterest-bearing demand deposits $ 10,532,838 $ 10,532,838 $ — $ — Checking, NOW, savings, and money market 20,432,813 20,432,813 — — Time deposits 5,265,664 — 5,209,887 — Federal funds purchased and interbank borrowings 136,060 136,060 — — Securities sold under agreements to repurchase 311,447 311,447 — — FHLB advances 4,771,183 — 4,526,920 — Other borrowings 815,318 — 781,468 — Accrued interest payable 42,897 — 42,897 — Standby letters of credit 949 — — 949 Off-Balance Sheet Financial Instruments Commitments to extend credit $ — $ — $ — $ 3,621 Fair Value Measurements at December 31, 2022 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Cash, due from banks, money market, $ 728,412 $ 728,412 $ — $ — Investment securities held-to-maturity: U.S. government-sponsored entities and agencies 819,168 — 656,358 — Mortgage-backed securities - Agency 1,106,817 — 982,963 — State and political subdivisions 1,163,162 — 1,004,361 — Loans, net: Commercial 9,386,862 — — 9,066,583 Commercial real estate 12,317,825 — — 11,867,851 Residential real estate 6,438,525 — — 5,372,491 Consumer credit 2,676,758 — — 2,557,115 Accrued interest receivable 190,521 758 52,081 137,682 Financial Liabilities Deposits: Noninterest-bearing demand deposits $ 11,930,798 $ 11,930,798 $ — $ — Checking, NOW, savings, and money market 20,056,252 20,056,252 — — Time deposits 3,013,780 — 2,976,389 — Federal funds purchased and interbank borrowings 581,489 581,489 — — Securities sold under agreements to repurchase 432,804 432,804 — — FHLB advances 3,829,018 — 3,739,780 — Other borrowings 743,003 — 703,156 — Accrued interest payable 19,547 — 19,547 — Standby letters of credit 755 — — 755 Off-Balance Sheet Financial Instruments Commitments to extend credit $ — $ — $ — $ 3,666

Acquisition and Divestiture A_2

Acquisition and Divestiture Activity (Details) - USD ($) $ in Millions		6 Months Ended
	Nov. 18, 2022	Jun. 30, 2023	Jun. 30, 2022
Business Acquisition [Line Items]
Deposits, health savings accounts	$ 382
Gain on sale of health savings accounts business	$ 90.7
First Midwest
Business Acquisition [Line Items]
Transaction costs, expensed		$ 16.9	$ 77.9

Net Income Per Common Share (De

Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 155,036	$ 146,600	$ 114,985	$ (27,586)	$ 301,636	$ 87,399
Preferred dividends	(4,033)		(4,033)		(8,067)	(6,050)
Net income applicable to common shareholders	$ 151,003		$ 110,952		$ 293,569	$ 81,349
Weighted average common shares outstanding:
Weighted average common shares outstanding (basic) (in shares)	290,559		290,862		290,822	259,108
Effect of dilutive securities:
Restricted stock (in shares)	707		1,014		1,047	1,136
Stock appreciation rights (in shares)	0		5		1	9
Weighted average diluted shares outstanding (in shares)	291,266		291,881		291,870	260,253
Basic Net Income Per Common Share (in dollars per share)	$ 0.52		$ 0.38		$ 1.01	$ 0.31
Diluted Net Income Per Common Share (in dollars per share)	$ 0.52		$ 0.38		$ 1.01	$ 0.31

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Fair Value of Available-for-Sale Investment Securities Portfolio (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Available-for-Sale
Total	$ 7,551,258	$ 7,772,603
Unrealized Gains	1,084	3,028
Unrealized Losses	(935,766)	(847,474)
Basis adjustments	(116,061)	(154,445)
Fair Value	6,500,515	6,773,712
Held-to-Maturity
Allowance for securities held-to-maturity	(150)	(150)
Total held-to-maturity securities	3,054,997	3,089,147
Unrealized Gains	437	221
Unrealized Losses	(452,376)	(445,686)
Basis adjustments	0	0
Fair Value	2,603,058	2,643,682
U.S. Treasury
Available-for-Sale
Total	364,824	253,148
Unrealized Gains	0	5
Unrealized Losses	(9,245)	(5,189)
Basis adjustments	(43,167)	(47,037)
Fair Value	312,412	200,927
U.S. government-sponsored entities and agencies
Available-for-Sale
Total	1,448,873	1,451,736
Unrealized Gains	0	0
Unrealized Losses	(201,623)	(169,248)
Basis adjustments	(72,894)	(107,408)
Fair Value	1,174,356	1,175,080
Held-to-Maturity
Amortized Cost	822,517	819,168
Unrealized Gains	0	0
Unrealized Losses	(167,071)	(162,810)
Basis adjustments	0	0
Fair Value	655,446	656,358
Mortgage-backed securities
Available-for-Sale
Total	4,760,921	4,986,354
Unrealized Gains	123	976
Unrealized Losses	(663,273)	(617,428)
Basis adjustments	0	0
Fair Value	4,097,771	4,369,902
Held-to-Maturity
Amortized Cost	1,070,687	1,106,817
Unrealized Gains	0	0
Unrealized Losses	(142,191)	(123,854)
Basis adjustments	0	0
Fair Value	928,496	982,963
States and political subdivisions
Available-for-Sale
Total	623,196	688,159
Unrealized Gains	844	1,789
Unrealized Losses	(25,258)	(26,096)
Basis adjustments	0	0
Fair Value	598,782	663,852
Held-to-Maturity
Amortized Cost	1,161,943	1,163,312
Unrealized Gains	437	221
Unrealized Losses	(143,114)	(159,022)
Basis adjustments	0	0
Fair Value	1,019,266	1,004,511
Pooled trust preferred securities
Available-for-Sale
Total	13,791	13,783
Unrealized Gains	0	0
Unrealized Losses	(2,797)	(2,972)
Basis adjustments	0	0
Fair Value	10,994	10,811
Other securities
Available-for-Sale
Total	339,653	379,423
Unrealized Gains	117	258
Unrealized Losses	(33,570)	(26,541)
Basis adjustments	0	0
Fair Value	$ 306,200	$ 353,140

Investment Securities - Schedul

Investment Securities - Schedule of Proceeds from Sales or Calls and Realized Gain and Losses of Available-for-sale Investment Securities and Other Securities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Proceeds from Sale, Maturity and Collection of Investments [Abstract]
Proceeds	$ 24,933	$ 23,234	$ 82,888	$ 73,347
Realized gains	39	48	948	511
Realized losses	$ (22)	$ (133)	$ (6,147)	$ (254)

Investment Securities - Expecte

Investment Securities - Expected Maturities of Investment Securities Portfolio (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Available-for-sale, Amortized Cost
Within one year	$ 242,424
One to five years	1,621,101
Five to ten years	3,926,306
Beyond ten years	1,761,427
Total	7,551,258	$ 7,772,603
Available-for-sale, Fair Value
Within one year	238,951
One to five years	1,478,764
Five to ten years	3,374,584
Beyond ten years	1,408,216
Total	$ 6,500,515	6,773,712
Available-for-sale, Weighted Average Yield
Within one year	3.93%
One to five years	2.77%
Five to ten years	2.35%
Beyond ten years	2.43%
Total	2.51%
Held-to-Maturity, Amortized Cost
One to five years	$ 162,082
Five to ten years	888,640
Beyond ten years	2,004,275
Total held-to-maturity securities	3,054,997	3,089,147
Held-to-Maturity, Fair Value
One to five years	135,763
Five to ten years	780,437
Beyond ten years	1,686,858
Total	$ 2,603,058	$ 2,643,682
Held-to-Maturity, Weighted Average Yield
One to five years	2.71%
Five to ten years	2.61%
Beyond ten years	2.73%
Total	2.69%

Investment Securities - Availab

Investment Securities - Available-for-Sale and Held-to-Maturity Investment Securities with Unrealized Losses by Aggregated Major Security Type and Length of Time in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, less than 12 months, fair value	$ 735,456	$ 4,465,728
Available-for-sale, less than 12 months, unrealized losses	(21,643)	(480,166)
Available-for-sale, 12 months or longer, fair value	5,566,702	1,992,246
Available-for-sale, 12 months or longer, unrealized losses	(914,123)	(367,308)
Available-for-sale, fair value	6,302,158	6,457,974
Available-for-sale, unrealized losses	(935,766)	(847,474)
U.S. Treasury
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, less than 12 months, fair value	124,751	130,967
Available-for-sale, less than 12 months, unrealized losses	(258)	(3,264)
Available-for-sale, 12 months or longer, fair value	187,661	66,992
Available-for-sale, 12 months or longer, unrealized losses	(8,987)	(1,925)
Available-for-sale, fair value	312,412	197,959
Available-for-sale, unrealized losses	(9,245)	(5,189)
U.S. government-sponsored entities and agencies
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, less than 12 months, fair value	14,732	454,854
Available-for-sale, less than 12 months, unrealized losses	(264)	(75,795)
Available-for-sale, 12 months or longer, fair value	1,159,624	720,226
Available-for-sale, 12 months or longer, unrealized losses	(201,359)	(93,453)
Available-for-sale, fair value	1,174,356	1,175,080
Available-for-sale, unrealized losses	(201,623)	(169,248)
Mortgage-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, less than 12 months, fair value	402,696	3,207,319
Available-for-sale, less than 12 months, unrealized losses	(19,217)	(358,507)
Available-for-sale, 12 months or longer, fair value	3,677,906	1,116,205
Available-for-sale, 12 months or longer, unrealized losses	(644,056)	(258,921)
Available-for-sale, fair value	4,080,602	4,323,524
Available-for-sale, unrealized losses	(663,273)	(617,428)
States and political subdivisions
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, less than 12 months, fair value	168,144	414,813
Available-for-sale, less than 12 months, unrealized losses	(1,406)	(25,555)
Available-for-sale, 12 months or longer, fair value	264,829	2,703
Available-for-sale, 12 months or longer, unrealized losses	(23,852)	(541)
Available-for-sale, fair value	432,973	417,516
Available-for-sale, unrealized losses	(25,258)	(26,096)
Pooled trust preferred securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, less than 12 months, fair value	0	0
Available-for-sale, less than 12 months, unrealized losses	0	0
Available-for-sale, 12 months or longer, fair value	10,994	10,811
Available-for-sale, 12 months or longer, unrealized losses	(2,797)	(2,972)
Available-for-sale, fair value	10,994	10,811
Available-for-sale, unrealized losses	(2,797)	(2,972)
Other securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, less than 12 months, fair value	25,133	257,775
Available-for-sale, less than 12 months, unrealized losses	(498)	(17,045)
Available-for-sale, 12 months or longer, fair value	265,688	75,309
Available-for-sale, 12 months or longer, unrealized losses	(33,072)	(9,496)
Available-for-sale, fair value	290,821	333,084
Available-for-sale, unrealized losses	$ (33,570)	$ (26,541)

Investment Securities - Held-to

Investment Securities - Held-to-Maturity with Unrecognized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value
Less than 12 months	$ 364,196	$ 1,560,831
12 months or longer	2,206,675	1,052,753
Total	2,570,871	2,613,584
Unrecognized Losses
Less than 12 months	(33,222)	(280,316)
12 months or longer	(419,154)	(165,370)
Total	(452,376)	(445,686)
U.S. government-sponsored entities and agencies
Fair Value
Less than 12 months	81,251	354,293
12 months or longer	574,195	302,066
Total	655,446	656,359
Unrecognized Losses
Less than 12 months	(8,138)	(110,523)
12 months or longer	(158,933)	(52,287)
Total	(167,071)	(162,810)
Mortgage-backed securities
Fair Value
Less than 12 months	244,643	367,849
12 months or longer	683,853	615,114
Total	928,496	982,963
Unrecognized Losses
Less than 12 months	(24,690)	(42,438)
12 months or longer	(117,501)	(81,416)
Total	(142,191)	(123,854)
States and political subdivisions
Fair Value
Less than 12 months	38,302	838,689
12 months or longer	948,627	135,573
Total	986,929	974,262
Unrecognized Losses
Less than 12 months	(394)	(127,355)
12 months or longer	(142,720)	(31,667)
Total	$ (143,114)	$ (159,022)

Investment Securities - Additio

Investment Securities - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) instrument security	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) instrument security	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Summary of Investment Holdings [Line Items]
Transferred from available-for-sale to held-for-maturity	$ 137,900,000		$ 137,900,000		$ 148,900,000
Allowance for credit losses for available-for-sale debt securities	0		0		0
Allowance for securities held-to-maturity	150,000		150,000		150,000
Accrued interest receivable	$ 50,600,000		$ 50,600,000		50,900,000
Number of securities in security portfolio | security	3,047		3,047
Number of securities in unrealized loss position | security	2,808		2,808
Fair Value	$ 6,500,515,000		$ 6,500,515,000		6,773,712,000
Unrealized losses	935,766,000		935,766,000		847,474,000
Equity securities, at fair value	71,953,000		71,953,000		52,507,000
Gains (losses) on equity securities	100,000	$ (2,400,000)	(700,000)	$ (4,200,000)
Impairments on equity securities without readily determinable fair value			0	$ 0
Other Assets
Summary of Investment Holdings [Line Items]
Equity securities without readily determinable fair value	401,400,000		401,400,000		396,800,000
Other Assets | Partnership Interest
Summary of Investment Holdings [Line Items]
Equity securities without readily determinable fair value	243,100,000		243,100,000
Other Assets | Initiatives in Low-to-Moderate Income Neighborhoods
Summary of Investment Holdings [Line Items]
Equity securities without readily determinable fair value	$ 158,300,000		$ 158,300,000
Pooled trust preferred securities
Summary of Investment Holdings [Line Items]
Number of instruments held | instrument	2		2
Fair Value	$ 10,994,000		$ 10,994,000		10,811,000
Unrealized losses	$ 2,797,000		$ 2,797,000		$ 2,972,000

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Additional Information (Details)	6 Months Ended
	Jun. 30, 2023 USD ($) segment portfolio	Dec. 31, 2022 USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of loan portfolios | portfolio	4
Number of loan segments | segment	7
Accrued interest receivable on loans	$ 149,900,000	$ 137,700,000
Loan placed on nonaccrual when past due, number of days	90 days
Loan participations	$ 2,600,000,000
Loan participations sold	1,200,000,000
Loan participations retained	1,400,000,000
Unfunded commitments on TDRs	$ 0
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage of risk-based capital (in percent)	240%
Regulatory guideline limit (in percent)	300%

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Schedule of Composition of Loans and Impact of Adoption (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 32,432,473		$ 31,123,641
Allowance for credit losses on loans	(300,555)	$ (298,711)	(303,671)	$ (288,003)	$ (280,507)	$ (107,341)
Net loans	32,131,918		30,819,970
Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0		0
After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	32,432,473		31,123,641
Allowance for credit losses on loans	(300,555)		(303,671)
Net loans	32,131,918		30,819,970
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	9,698,241		9,508,904
Allowance for credit losses on loans	(127,403)	(125,768)	(120,612)	(102,819)	(99,471)	(27,232)
Commercial | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	(227,414)		(210,280)
Commercial | After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	9,470,827		9,298,624
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	13,450,209		12,457,070
Allowance for credit losses on loans	(136,897)	(135,348)	(138,244)	(141,802)	(140,490)	(64,004)
Commercial real estate | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	(162,841)		(158,322)
Commercial real estate | After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	13,287,368		12,298,748
BBCC
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses on loans	(2,776)	(2,316)	(2,431)	(2,064)	(2,069)	(2,458)
BBCC | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	390,255		368,602
BBCC | After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	390,255		368,602
Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,684,480		6,460,441
Allowance for credit losses on loans	(20,421)	(20,207)	(21,916)	(19,729)	(17,252)	(9,347)
Residential real estate | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0		0
Residential real estate | After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,684,480		6,460,441
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,599,543		2,697,226
Consumer | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	(2,599,543)		(2,697,226)
Indirect
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,003,287		1,034,257
Allowance for credit losses on loans	(1,407)	(1,434)	(1,532)	(1,641)	(1,648)	(1,743)
Indirect | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,003,287		1,034,257
Indirect | After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,003,287		1,034,257
Direct
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	565,950		629,186
Allowance for credit losses on loans	(4,755)	(6,766)	(12,116)	(14,412)	(14,450)	(528)
Direct | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	565,950		629,186
Direct | After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	565,950		629,186
Home equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,030,306		1,033,783
Allowance for credit losses on loans	(6,896)	$ (6,872)	(6,820)	$ (5,536)	$ (5,127)	$ (2,029)
Home equity | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,030,306		1,033,783
Home equity | After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,030,306		1,033,783
Direct Finance Leases
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 176,700		$ 188,100

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Schedule of Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 298,711	$ 280,507	$ 303,671	$ 107,341
Allowance Established for Acquired PCD Loans	0	0	0	78,531
Charge-offs	(14,331)	(4,096)	(32,511)	(8,760)
Recoveries	4,239	2,338	5,990	4,228
Provision for Loan Losses	11,936	9,254	23,405	106,663
Balance at End of Period	300,555	288,003	300,555	288,003
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	125,768	99,471	120,612	27,232
Allowance Established for Acquired PCD Loans	0	0	0	35,040
Charge-offs	(8,331)	(1,344)	(20,754)	(3,223)
Recoveries	1,814	781	2,097	1,013
Provision for Loan Losses	8,152	3,911	25,448	42,757
Balance at End of Period	127,403	102,819	127,403	102,819
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	135,348	140,490	138,244	64,004
Allowance Established for Acquired PCD Loans	0	0	0	42,601
Charge-offs	(2,458)	(318)	(3,647)	(824)
Recoveries	1,029	320	1,292	502
Provision for Loan Losses	2,978	1,310	1,008	35,519
Balance at End of Period	136,897	141,802	136,897	141,802
BBCC
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,316	2,069	2,431	2,458
Allowance Established for Acquired PCD Loans	0	0	0	0
Charge-offs	(94)	(20)	(122)	(48)
Recoveries	31	91	104	148
Provision for Loan Losses	523	(76)	363	(494)
Balance at End of Period	2,776	2,064	2,776	2,064
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	20,207	17,252	21,916	9,347
Allowance Established for Acquired PCD Loans	0	0	0	136
Charge-offs	(218)	(137)	(241)	(324)
Recoveries	53	130	125	570
Provision for Loan Losses	379	2,484	(1,379)	10,000
Balance at End of Period	20,421	19,729	20,421	19,729
Indirect
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	1,434	1,648	1,532	1,743
Allowance Established for Acquired PCD Loans	0	0	0	0
Charge-offs	(402)	(528)	(1,599)	(1,012)
Recoveries	612	320	1,024	542
Provision for Loan Losses	(237)	201	450	368
Balance at End of Period	1,407	1,641	1,407	1,641
Direct
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	6,766	14,450	12,116	528
Allowance Established for Acquired PCD Loans	0	0	0	31
Charge-offs	(2,600)	(1,722)	(5,838)	(3,251)
Recoveries	637	676	1,218	1,270
Provision for Loan Losses	(48)	1,008	(2,741)	15,834
Balance at End of Period	4,755	14,412	4,755	14,412
Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	6,872	5,127	6,820	2,029
Allowance Established for Acquired PCD Loans	0	0	0	723
Charge-offs	(228)	(27)	(310)	(78)
Recoveries	63	20	130	183
Provision for Loan Losses	189	416	256	2,679
Balance at End of Period	$ 6,896	$ 5,536	$ 6,896	$ 5,536

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Schedule of Allowance for Credit Losses on Unfunded Loan Commitments (Details) - Unfunded Loan Commitment - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 34,156	$ 22,046	$ 32,188	$ 10,879
Provision for credit losses on unfunded commitments acquired during the period	0	0	0	11,013
Provision for unfunded loan commitments	2,851	(80)	4,819	74
Balance at end of period	$ 37,007	$ 21,966	$ 37,007	$ 21,966

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses - Schedule of Risk Rating and Payment Performance (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 32,432,473		$ 32,432,473		$ 31,123,641
2023	10		10
2022	2,741		3,780
2021	6,643		13,860
2020	387		1,166
2019	430		7,657
Prior	3,139		3,727
Revolving	981		2,311
Total	14,331	$ 4,096	32,511	$ 8,760
Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	32,432,473		32,432,473		31,123,641
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	9,698,241		9,698,241		9,508,904
Total	8,331	1,344	20,754	3,223
Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,154,520		1,154,520		2,473,145
2022	1,984,931		1,984,931		1,851,604
2021	1,372,242		1,372,242		880,723
2020	734,060		734,060		802,628
2019	640,725		640,725		382,993
Prior	739,650		739,650		423,484
Revolving	2,313,834		2,313,834		2,118,835
Revolving to Term	530,865		530,865		365,212
Total loans	9,470,827		9,470,827		9,298,624
2023	0		0
2022	2,100		2,100
2021	5,931		11,161
2020	120		120
2019	0		6,789
Prior	0		239
Revolving	180		345
Total	8,331		20,754
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	13,450,209		13,450,209		12,457,070
Total	2,458	318	3,647	824
Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,231,891		1,231,891		3,193,582
2022	3,441,886		3,441,886		2,928,035
2021	2,890,052		2,890,052		2,050,913
2020	1,914,989		1,914,989		1,384,735
2019	1,257,962		1,257,962		823,735
Prior	1,708,599		1,708,599		1,139,730
Revolving	88,467		88,467		57,818
Revolving to Term	753,522		753,522		720,200
Total loans	13,287,368		13,287,368		12,298,748
2023	0		0
2022	0		54
2021	0		735
2020	0		400
2019	0		0
Prior	2,458		2,458
Revolving	0		0
Total	2,458		3,647
BBCC
Financing Receivable, Credit Quality Indicator [Line Items]
Total	94	20	122	48
BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	53,654		53,654		92,738
2022	80,494		80,494		64,973
2021	55,320		55,320		53,229
2020	44,970		44,970		38,138
2019	33,761		33,761		24,464
Prior	30,366		30,366		11,690
Revolving	71,927		71,927		61,565
Revolving to Term	19,763		19,763		21,805
Total loans	390,255		390,255		368,602
2023	0		0
2022	47		47
2021	0		28
2020	47		47
2019	0		0
Prior	0		0
Revolving	0		0
Total	94		122
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2023	261,285		261,285		1,327,227
2022	1,482,818		1,482,818		1,946,321
2021	1,951,232		1,951,232		1,826,623
2020	1,714,093		1,714,093		479,402
2019	462,629		462,629		138,086
Prior	812,280		812,280		742,687
Revolving	0		0		7
Revolving to Term	143		143		88
Total loans	6,684,480		6,684,480		6,460,441
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	218		241
Revolving	0		0
Total	218	137	241	324
Residential real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	6,684,480		6,684,480		6,460,441
Residential real estate | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2023	261,285		261,285		1,327,168
2022	1,480,926		1,480,926		1,945,792
2021	1,948,505		1,948,505		1,825,762
2020	1,709,893		1,709,893		478,529
2019	459,251		459,251		136,260
Prior	785,089		785,089		712,175
Revolving	0		0		7
Revolving to Term	143		143		88
Total loans	6,645,092		6,645,092		6,425,781
Residential real estate | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0		0		59
2022	1,892		1,892		529
2021	2,727		2,727		861
2020	4,200		4,200		873
2019	3,378		3,378		1,826
Prior	27,191		27,191		30,512
Revolving	0		0		0
Revolving to Term	0		0		0
Total loans	39,388		39,388		34,660
Indirect
Financing Receivable, Credit Quality Indicator [Line Items]
2023	187,709		187,709		504,758
2022	426,929		426,929		250,481
2021	203,028		203,028		144,910
2020	99,824		99,824		82,835
2019	57,851		57,851		31,788
Prior	27,863		27,863		19,423
Revolving	0		0		0
Revolving to Term	83		83		62
Total loans	1,003,287		1,003,287		1,034,257
2023	10		10
2022	164		678
2021	124		554
2020	48		141
2019	16		127
Prior	40		89
Revolving	0		0
Total	402	528	1,599	1,012
Indirect | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,003,287		1,003,287		1,034,257
Indirect | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2023	187,644		187,644		504,410
2022	425,822		425,822		249,407
2021	202,230		202,230		144,265
2020	98,742		98,742		82,304
2019	57,413		57,413		31,484
Prior	27,397		27,397		19,095
Revolving	0		0		0
Revolving to Term	83		83		62
Total loans	999,331		999,331		1,031,027
Indirect | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2023	65		65		348
2022	1,107		1,107		1,074
2021	798		798		645
2020	1,082		1,082		531
2019	438		438		304
Prior	466		466		328
Revolving	0		0		0
Revolving to Term	0		0		0
Total loans	3,956		3,956		3,230
Direct
Financing Receivable, Credit Quality Indicator [Line Items]
2023	53,799		53,799		133,049
2022	110,382		110,382		164,977
2021	121,630		121,630		78,020
2020	77,731		77,731		58,124
2019	41,972		41,972		45,626
Prior	84,125		84,125		60,738
Revolving	74,953		74,953		87,627
Revolving to Term	1,358		1,358		1,025
Total loans	565,950		565,950		629,186
2023	0		0
2022	430		901
2021	588		1,382
2020	172		458
2019	414		741
Prior	195		390
Revolving	801		1,966
Total	2,600	1,722	5,838	3,251
Direct | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	565,950		565,950		629,186
Direct | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2023	53,778		53,778		132,934
2022	110,107		110,107		164,126
2021	121,141		121,141		77,406
2020	77,169		77,169		57,919
2019	41,509		41,509		45,299
Prior	80,155		80,155		59,212
Revolving	74,945		74,945		87,622
Revolving to Term	1,348		1,348		671
Total loans	560,152		560,152		625,189
Direct | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2023	21		21		115
2022	275		275		851
2021	489		489		614
2020	562		562		205
2019	463		463		327
Prior	3,970		3,970		1,526
Revolving	8		8		5
Revolving to Term	10		10		354
Total loans	5,798		5,798		3,997
Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0		0		1,085
2022	1,379		1,379		1,056
2021	973		973		2,015
2020	941		941		1,943
2019	2,000		2,000		1,777
Prior	11,349		11,349		15,954
Revolving	990,630		990,630		991,699
Revolving to Term	23,034		23,034		18,254
Total loans	1,030,306		1,030,306		1,033,783
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	228		310
Revolving	0		0
Total	228	$ 27	310	$ 78
Home equity | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,030,306		1,030,306		1,033,783
Home equity | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0		0		919
2022	1,328		1,328		896
2021	843		843		1,849
2020	859		859		1,497
2019	943		943		983
Prior	6,573		6,573		11,646
Revolving	988,669		988,669		990,001
Revolving to Term	16,859		16,859		14,792
Total loans	1,016,074		1,016,074		1,022,583
Home equity | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0		0		166
2022	51		51		160
2021	130		130		166
2020	82		82		446
2019	1,057		1,057		794
Prior	4,776		4,776		4,308
Revolving	1,961		1,961		1,698
Revolving to Term	6,175		6,175		3,462
Total loans	14,232		14,232		11,200
Pass | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,108,984		1,108,984		2,388,618
2022	1,860,049		1,860,049		1,754,364
2021	1,307,700		1,307,700		796,340
2020	671,792		671,792		738,208
2019	604,875		604,875		362,986
Prior	673,184		673,184		388,617
Revolving	2,185,539		2,185,539		1,988,763
Revolving to Term	465,649		465,649		329,119
Total loans	8,877,772		8,877,772		8,747,015
Pass | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,188,882		1,188,882		3,066,960
2022	3,335,715		3,335,715		2,828,758
2021	2,791,366		2,791,366		1,989,000
2020	1,852,690		1,852,690		1,219,025
2019	1,083,211		1,083,211		675,572
Prior	1,511,576		1,511,576		1,018,719
Revolving	84,574		84,574		57,818
Revolving to Term	677,072		677,072		689,553
Total loans	12,525,086		12,525,086		11,545,405
Pass | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	52,620		52,620		90,341
2022	77,831		77,831		64,161
2021	53,068		53,068		52,304
2020	44,433		44,433		36,868
2019	32,200		32,200		23,618
Prior	28,305		28,305		11,333
Revolving	69,107		69,107		60,016
Revolving to Term	16,637		16,637		18,881
Total loans	374,201		374,201		357,522
Criticized | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	28,284		28,284		40,856
2022	84,240		84,240		30,661
2021	15,092		15,092		63,557
2020	23,548		23,548		33,490
2019	29,772		29,772		9,195
Prior	32,376		32,376		5,312
Revolving	74,437		74,437		61,036
Revolving to Term	25,524		25,524		4,327
Total loans	313,273		313,273		248,434
Criticized | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	28,324		28,324		75,306
2022	30,372		30,372		34,422
2021	31,377		31,377		22,569
2020	32,238		32,238		82,637
2019	54,738		54,738		86,504
Prior	88,116		88,116		56,864
Revolving	3,893		3,893		0
Revolving to Term	23,353		23,353		23,282
Total loans	292,411		292,411		381,584
Criticized | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	987		987		1,504
2022	1,445		1,445		525
2021	1,081		1,081		368
2020	360		360		692
2019	1,045		1,045		353
Prior	483		483		0
Revolving	1,836		1,836		1,006
Revolving to Term	1,626		1,626		1,603
Total loans	8,863		8,863		6,051
Substandard | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	17,252		17,252		37,223
2022	16,246		16,246		47,522
2021	36,914		36,914		16,540
2020	36,303		36,303		22,925
2019	4,671		4,671		4,844
Prior	22,508		22,508		21,204
Revolving	52,794		52,794		67,402
Revolving to Term	37,482		37,482		25,143
Total loans	224,170		224,170		242,803
Substandard | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	14,685		14,685		46,231
2022	71,131		71,131		16,928
2021	17,505		17,505		24,319
2020	19,748		19,748		78,468
2019	79,998		79,998		57,824
Prior	44,060		44,060		21,591
Revolving	0		0		0
Revolving to Term	49,825		49,825		4,108
Total loans	296,952		296,952		249,469
Substandard | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	10		10		811
2022	497		497		143
2021	629		629		0
2020	49		49		421
2019	226		226		0
Prior	836		836		0
Revolving	484		484		543
Revolving to Term	856		856		682
Total loans	3,587		3,587		2,600
Nonaccrual | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0		0		3,627
2022	349		349		1,453
2021	0		0		566
2020	585		585		0
2019	824		824		0
Prior	6,681		6,681		0
Revolving	1,064		1,064		1,634
Revolving to Term	2,210		2,210		6,623
Total loans	11,713		11,713		13,903
Nonaccrual | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0		0		3,151
2022	866		866		9,541
2021	18,463		18,463		5,014
2020	1,064		1,064		0
2019	456		456		2,312
Prior	16,081		16,081		22,155
Revolving	0		0		0
Revolving to Term	3,272		3,272		3,257
Total loans	40,202		40,202		45,430
Nonaccrual | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	37		37		42
2022	313		313		37
2021	323		323		118
2020	128		128		0
2019	235		235		429
Prior	668		668		284
Revolving	0		0		0
Revolving to Term	644		644		639
Total loans	2,348		2,348		1,549
Doubtful | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0		0		2,821
2022	24,047		24,047		17,604
2021	12,536		12,536		3,720
2020	1,832		1,832		8,005
2019	583		583		5,968
Prior	4,901		4,901		8,351
Revolving	0		0		0
Revolving to Term	0		0		0
Total loans	43,899		43,899		46,469
Doubtful | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0		0		1,934
2022	3,802		3,802		38,386
2021	31,341		31,341		10,011
2020	9,249		9,249		4,605
2019	39,559		39,559		1,523
Prior	48,766		48,766		20,401
Revolving	0		0		0
Revolving to Term	0		0		0
Total loans	132,717		132,717		76,860
Doubtful | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0		0		40
2022	408		408		107
2021	219		219		439
2020	0		0		157
2019	55		55		64
Prior	74		74		73
Revolving	500		500		0
Revolving to Term	0		0		0
Total loans	$ 1,256		$ 1,256		$ 880

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses - Schedule of Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Total loans	$ 32,432,473	$ 31,123,641
Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	32,432,473	31,123,641
Commercial
Financing Receivable, Past Due [Line Items]
Total loans	9,698,241	9,508,904
Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	9,470,827	9,298,624
Commercial real estate
Financing Receivable, Past Due [Line Items]
Total loans	13,450,209	12,457,070
Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	13,287,368	12,298,748
BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	390,255	368,602
Residential real estate
Financing Receivable, Past Due [Line Items]
Total loans	6,684,480	6,460,441
Residential real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	6,684,480	6,460,441
Indirect
Financing Receivable, Past Due [Line Items]
Total loans	1,003,287	1,034,257
Indirect | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	1,003,287	1,034,257
Direct
Financing Receivable, Past Due [Line Items]
Total loans	565,950	629,186
Direct | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	565,950	629,186
Home equity
Financing Receivable, Past Due [Line Items]
Total loans	1,030,306	1,033,783
Home equity | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	1,030,306	1,033,783
Total Past Due | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	137,223	186,223
Total Past Due | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	23,021	30,028
Total Past Due | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	54,107	81,444
Total Past Due | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	1,789	1,698
Total Past Due | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	34,024	40,967
Total Past Due | Indirect | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	6,298	9,378
Total Past Due | Direct | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	5,257	9,450
Total Past Due | Home equity | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	12,727	13,258
30-59 Days Past Due | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	45,690	104,589
30-59 Days Past Due | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	4,164	14,147
30-59 Days Past Due | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	7,760	47,240
30-59 Days Past Due | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	868	730
30-59 Days Past Due | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	18,543	24,181
30-59 Days Past Due | Indirect | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	4,296	6,302
30-59 Days Past Due | Direct | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	3,225	5,404
30-59 Days Past Due | Home equity | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	6,834	6,585
60-89 Days Past Due | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	22,767	17,713
60-89 Days Past Due | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	3,719	4,801
60-89 Days Past Due | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	10,441	1,312
60-89 Days Past Due | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	847	365
60-89 Days Past Due | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	4,350	5,033
60-89 Days Past Due | Indirect | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	1,162	2,118
60-89 Days Past Due | Direct | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	775	2,118
60-89 Days Past Due | Home equity | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	1,473	1,966
Past Due 90 Days or More | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	68,766	63,921
Past Due 90 Days or More | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	15,138	11,080
Past Due 90 Days or More | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	35,906	32,892
Past Due 90 Days or More | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	74	603
Past Due 90 Days or More | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	11,131	11,753
Past Due 90 Days or More | Indirect | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	840	958
Past Due 90 Days or More | Direct | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	1,257	1,928
Past Due 90 Days or More | Home equity | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	4,420	4,707
Current | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	32,295,250	30,937,418
Current | Commercial | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	9,447,806	9,268,596
Current | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	13,233,261	12,217,304
Current | BBCC | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	388,466	366,904
Current | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	6,650,456	6,419,474
Current | Indirect | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	996,989	1,024,879
Current | Direct | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	560,693	619,736
Current | Home equity | Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Past Due [Line Items]
Total loans	$ 1,017,579	$ 1,020,525

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses - Schedule of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	$ 295,509	$ 238,178
Nonaccrual With No Related Allowance	56,884	41,318
Past Due 90 Days or More and Accruing	303	2,650
Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	55,612	60,372
Nonaccrual With No Related Allowance	12,666	7,873
Past Due 90 Days or More and Accruing	92	152
Commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	172,919	122,290
Nonaccrual With No Related Allowance	44,218	33,445
Past Due 90 Days or More and Accruing	173	0
BBCC
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	3,604	2,429
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	0	0
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	39,388	34,660
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	0	1,808
Indirect
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	3,956	3,230
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	0	28
Direct
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	5,798	3,997
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	25	133
Home equity
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	14,232	11,200
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	$ 13	$ 529

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Schedule of Types of Collateral (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 32,432,473	$ 31,123,641
Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	231,880	168,623
Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	42,500	43,245
Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,898	4,408
Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	4,780	5,085
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,657	7,414
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	9,698,241	9,508,904
Commercial | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	14,450	8,962
Commercial | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	37,285	42,754
Commercial | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	652	2,690
Commercial | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	535	1,611
Commercial | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	366	980
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	13,450,209	12,457,070
Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	156,570	108,871
Commercial real estate | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	3,908	0
Commercial real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,246	1,718
Commercial real estate | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Commercial real estate | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,259	6,411
BBCC | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,267	1,939
BBCC | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,301	478
BBCC | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
BBCC | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	36	12
BBCC | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,684,480	6,460,441
Residential real estate | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	39,388	34,660
Residential real estate | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Residential real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Residential real estate | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Residential real estate | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Indirect
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,003,287	1,034,257
Indirect | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Indirect | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Indirect | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Indirect | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	3,956	3,230
Indirect | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Direct
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	565,950	629,186
Direct | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	4,973	2,991
Direct | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6	13
Direct | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Direct | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	253	232
Direct | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	32	23
Home equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,030,306	1,033,783
Home equity | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	14,232	11,200
Home equity | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Home equity | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Home equity | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0	0
Home equity | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 0	$ 0

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses - Schedule of Amortized Cost Basis of Loans with Modifications (Details) - Extended Maturity - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Term Extension	$ 13,680	$ 37,797
Total Class of Loans	0%	0.10%
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Term Extension	$ 1,231	$ 18,517
Total Class of Loans	0%	0.20%
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Term Extension	$ 12,449	$ 19,280
Total Class of Loans	0.10%	0.10%

Loans and Allowance for Cred_12

Loans and Allowance for Credit Losses - Schedule of Monitors the Performance of Loan Modifications to Borrowers Experiencing Financial Difficulty to Understand the Effectiveness of its Modification Efforts (Details) - Extended Maturity - Segment Portfolio Reclassification, Adjusted Balance $ in Thousands	Jun. 30, 2023 USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 37,797
30-59 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	0
60-89 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,537
Past Due 90 Days or More
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	2,600
Total Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	8,137
Current
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	29,660
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	18,517
Commercial | 30-59 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	0
Commercial | 60-89 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	0
Commercial | Past Due 90 Days or More
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	2,600
Commercial | Total Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	2,600
Commercial | Current
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	15,917
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	19,280
Commercial real estate | 30-59 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	0
Commercial real estate | 60-89 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,537
Commercial real estate | Past Due 90 Days or More
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	0
Commercial real estate | Total Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,537
Commercial real estate | Current
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 13,743

Loans and Allowance for Cred_13

Loans and Allowance for Credit Losses - Schedule of the nature of the Loan Modifications to Borrowers Experiencing Financial Difficulty (Details) - Extended Maturity	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted- Average Term Extension (in months)	6 months	6 months
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted- Average Term Extension (in months)	7 months 6 days	7 months 6 days
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted- Average Term Extension (in months)	6 months	6 months

Leases - Additional Information

Leases - Additional Information (Details)	Jun. 30, 2023
Minimum
Lessee, Lease, Description [Line Items]
Operating lease term	5 years
Finance lease term	5 years
Maximum
Lessee, Lease, Description [Line Items]
Operating lease term	20 years
Finance lease term	20 years

Leases - Schedule of Components

Leases - Schedule of Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Finance lease cost:
Total	$ 8,288	$ 9,135	$ 17,726	$ 14,897
Occupancy/Equipment expense
Lessee, Lease, Description [Line Items]
Operating lease cost	7,469	8,558	16,107	13,666
Occupancy expense
Finance lease cost:
Amortization of right-of-use assets	737	648	1,428	1,323
Sub-lease income	(102)	(174)	(162)	(302)
Interest expense
Finance lease cost:
Interest on lease liabilities	$ 184	$ 103	$ 353	$ 210

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Operating Leases
Operating lease right-of-use assets	$ 184,700	$ 189,714
Operating lease liabilities	206,178	211,964
Finance Leases
Premises and equipment, net	20,435	10,799
Other borrowings	$ 21,346	$ 13,469
Finance lease, right-of-use asset, statement of financial position [extensible enumeration]	Premises and equipment, net	Premises and equipment, net
Finance lease, liability, statement of financial position [extensible enumeration]	Other borrowings	Other borrowings
Weighted-Average Remaining Lease Term (in Years)
Operating leases	8 years 8 months 12 days	9 years 1 month 6 days
Finance leases	10 years 6 months	7 years 2 months 12 days
Weighted-Average Discount Rate
Operating leases	2.92%	2.88%
Finance leases	3.84%	3.30%

Leases - Schedule of Suppleme_2

Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 15,752	$ 13,705
Operating cash flows from finance leases	353	210
Financing cash flows from finance leases	$ 1,265	$ 1,210

Leases - Schedule of Maturity A

Leases - Schedule of Maturity Analysis of Lease Liability by Lease Classification (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Operating Leases
2023	$ 15,993
2024	31,241
2025	29,621
2026	28,575
2027	27,604
Thereafter	101,741
Total undiscounted lease payments	234,775
Amounts representing interest	(28,597)
Lease liability	206,178	$ 211,964
Finance Leases
2023	1,611
2024	3,278
2025	3,301
2026	2,075
2027	2,079
Thereafter	13,964
Total undiscounted lease payments	26,308
Amounts representing interest	(4,962)
Lease liability	$ 21,346	$ 13,469

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Goodwill [Roll Forward]
Balance at beginning of period	$ 1,998,716	$ 1,997,157	$ 1,998,716	$ 1,036,994
Acquisitions and adjustments	0	(5,623)	0	954,540
Balance at end of period	$ 1,998,716	$ 1,991,534	$ 1,998,716	$ 1,991,534

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended
	Aug. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Goodwill [Line Items]
Goodwill impairment	$ 0
Impairment charges				$ 0	$ 0
Amortization of intangibles		$ 6,060,000	$ 7,170,000	$ 12,246,000	$ 11,981,000
Minimum | Core Deposits and Other Intangible Assets
Goodwill [Line Items]
Estimated useful lives		5 years		5 years
Maximum | Core Deposits and Other Intangible Assets
Goodwill [Line Items]
Estimated useful lives		15 years		15 years

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Schedule of Gross Carrying Amounts and Accumulated Amortization of Other Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 196,132	$ 226,885
Accumulated Amortization and Impairment	(81,973)	(100,480)
Net Carrying Amount	114,159	126,405
Core deposit
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	143,511	170,642
Accumulated Amortization and Impairment	(63,521)	(80,951)
Net Carrying Amount	79,990	89,691
Customer trust relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	52,621	56,243
Accumulated Amortization and Impairment	(18,452)	(19,529)
Net Carrying Amount	$ 34,169	$ 36,714

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Schedule of Estimated Amortization Expense for Future Years (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2023 remaining	$ 11,909
2024	21,239
2025	18,358
2026	15,555
2027	12,867
Thereafter	34,231
Net Carrying Amount	$ 114,159	$ 126,405

Qualified Affordable Housing _3

Qualified Affordable Housing Projects and Other Tax Credit Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Summary of Investment Holdings [Line Items]
Investment	$ 158,297		$ 158,297		$ 156,755
Unfunded commitment	63,343		63,343		65,342
Amortization expense	4,225	$ 2,765	8,450	$ 5,534
Tax expense (benefit) recognized	(5,031)	(3,288)	(10,063)	(6,564)
LIHTC
Summary of Investment Holdings [Line Items]
Investment, proportional amortization	90,164		90,164		84,428
Unfunded commitment, proportional amortization	53,327		53,327		55,754
Amortization expense	1,463	1,240	2,927	2,493
Tax expense (benefit) recognized	(1,908)	(1,650)	(3,817)	(3,300)
FHTC
Summary of Investment Holdings [Line Items]
Investment, equity	19,797		19,797		19,316
Unfunded commitment, equity	10,016		10,016		9,588
Amortization expense	424	215	848	420
Tax expense (benefit) recognized	(512)	(263)	(1,024)	(514)
NMTC
Summary of Investment Holdings [Line Items]
Investment, equity	47,728		47,728		51,912
Unfunded commitment, equity	0		0		0
Amortization expense	2,092	1,100	4,183	2,201
Tax expense (benefit) recognized	(2,611)	(1,375)	(5,222)	(2,750)
Renewable Energy
Summary of Investment Holdings [Line Items]
Investment, equity	608		608		1,099
Unfunded commitment, equity	0		0		$ 0
Amortization expense	246	210	492	420
Tax expense (benefit) recognized	$ 0	$ 0	$ 0	$ 0

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase - Schedule of Securities Sold under Agreements to Repurchase and Related Weighted-Average Interest Rates (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Securities Sold under Agreements to Repurchase [Abstract]
Outstanding at period end	$ 311,447	$ 476,173	$ 432,804
Average amount outstanding during the period	376,298	458,459
Maximum amount outstanding at any month-end during the period	$ 430,537	$ 509,275
Weighted average interest rate during period (in percent)	0.90%	0.08%
Weighted average interest rate at end of period (in percent)	1.14%	0.08%	1.31%

Securities Sold Under Agreeme_4

Securities Sold Under Agreements to Repurchase - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Securities Sold under Agreements to Repurchase [Abstract]
Outstanding at period end	$ 311,447	$ 432,804	$ 476,173
Weighted average interest rate at end of period (in percent)	1.14%	1.31%	0.08%
Gross outstanding balance of repurchase agreements collateralized by securities percentage (in percent)	125%

Securities Sold Under Agreeme_5

Securities Sold Under Agreements to Repurchase - Schedule of Remaining Contractual Maturity of Secured Borrowings and Class of Collateral Pledged Under Repurchase Agreements (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	$ 311,447	$ 432,804	$ 476,173
U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	311,447
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	311,447
Overnight and Continuous | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	311,447
Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	0
Up to 30 Days | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	0
30-90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	0
30-90 Days | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	0
Greater Than 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	0
Greater Than 90 days | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	$ 0

Federal Home Loan Bank Advanc_3

Federal Home Loan Bank Advances - Summary of FHLB Advances (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Federal Home Loan Bank, Advances [Line Items]
FHLB advances (fixed rates 0.00% to 5.49%    and variable rates 5.09% to 5.18%) maturing   September 2023 to September 2042	$ 4,800,528	$ 3,850,677
Fair value hedge basis adjustments and unamortized prepayment fees	(29,345)	(21,659)
Federal Home Loan Bank advances	$ 4,771,183	$ 3,829,018
Minimum | FHLB Advances
Federal Home Loan Bank, Advances [Line Items]
Fixed rate (in percent)	0%
Variable rate (in percent)	5.09%
Maximum | FHLB Advances
Federal Home Loan Bank, Advances [Line Items]
Fixed rate (in percent)	5.49%
Variable rate (in percent)	5.18%

Federal Home Loan Bank Advanc_4

Federal Home Loan Bank Advances - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Federal Home Loan Bank, Advances [Line Items]
Weighted-average rates of FHLB advances (in percent)	3.23%	3.15%
Modifications, unamortized prepayment fees	$ 17.2	$ 20.2
FHLB Advances
Federal Home Loan Bank, Advances [Line Items]
Percentage of borrowings collateralized by investment securities and residential real estate loans (in percent)	148%

Federal Home Loan Bank Advanc_5

Federal Home Loan Bank Advances - Summary of Contractual Maturities of FHLB Advances (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Federal Home Loan Banks [Abstract]
Due in 2023	$ 100,000
Due in 2024	25,243
Due in 2025	550,285
Due in 2026	100,000
Thereafter	4,025,000
Fair value hedge basis adjustments and unamortized prepayment fees	(29,345)	$ (21,659)
Federal Home Loan Bank advances	$ 4,771,183	$ 3,829,018

Other Borrowings - Summary of O

Other Borrowings - Summary of Other Borrowings (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Lease liability	$ 21,346	$ 13,469
Other borrowings	815,318	743,003
Old National Bank
Debt Instrument [Line Items]
Other basis adjustments	155,968	89,588
Lease liability	21,346	13,469
Derivative collateralize position amount	155,100	88,000
Old National Bancorp
Debt Instrument [Line Items]
Other basis adjustments	$ 20,785	23,363
Senior Unsecured Notes | Old National Bancorp
Debt Instrument [Line Items]
Fixed rate (in percent)	4.125%
Senior unsecured notes (fixed rate 4.125%) maturing August 2024	$ 175,000	175,000
Unamortized debt issuance costs related to senior unsecured notes	$ (169)	(247)
Subordinated Debt | Old National Bank
Debt Instrument [Line Items]
Variable rate (in percent)	9.66%
Subordinated debentures	$ 12,000	12,000
Subordinated Debt | Old National Bancorp
Debt Instrument [Line Items]
Fixed rate (in percent)	5.875%
Subordinated debentures	$ 150,000	150,000
Junior Subordinated Debentures | Old National Bancorp
Debt Instrument [Line Items]
Junior subordinated debentures (variable rates of    6.86% to 8.88%) maturing July 2031 to September 2037	136,643	136,643
Notes Payable to Banks | Old National Bank
Debt Instrument [Line Items]
Leveraged loans for NMTC (fixed rates of 1.00% to 1.43%) maturing December 2046 to June 2060	$ 143,745	$ 143,187
Minimum | Junior Subordinated Debentures | Old National Bancorp
Debt Instrument [Line Items]
Variable rate (in percent)	6.86%
Minimum | Notes Payable to Banks | Old National Bank
Debt Instrument [Line Items]
Fixed rate (in percent)	1%
Maximum | Junior Subordinated Debentures | Old National Bancorp
Debt Instrument [Line Items]
Variable rate (in percent)	8.88%
Maximum | Notes Payable to Banks | Old National Bank
Debt Instrument [Line Items]
Fixed rate (in percent)	1.43%

Other Borrowings - Contractual

Other Borrowings - Contractual Maturities of Other Borrowings (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Other Liabilities Disclosure [Abstract]
Due in 2023	$ 156,314
Due in 2024	177,609
Due in 2025	14,696
Due in 2026	151,529
Due in 2027	1,587
Thereafter	292,059
Unamortized debt issuance costs and other basis adjustments	21,524
Total	$ 815,318	$ 743,003

Other Borrowings - Additional I

Other Borrowings - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022	Feb. 15, 2022	Oct. 29, 2020
Debt Instrument [Line Items]
Other borrowings	$ 21,346	$ 13,469
Old National Bank
Debt Instrument [Line Items]
Other borrowings	21,346	13,469
Subordinated Debt | Old National Bank
Debt Instrument [Line Items]
Subordinated debentures	$ 12,000	12,000
Subordinated Debt | Old National Bancorp
Debt Instrument [Line Items]
Fixed rate (in percent)	5.875%
Subordinated debentures	$ 150,000	$ 150,000
Anchor Bank (MN) | Subordinated Debentures | Subordinated Fixed-to-Floating Notes
Debt Instrument [Line Items]
Value of subordinated fixed-to-floating notes assumed				$ 12,000
Fixed rate (in percent)				5.75%
Anchor Bank (MN) | Subordinated Debentures | Subordinated Fixed-to-Floating Notes | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	4.356%
First Midwest
Debt Instrument [Line Items]
Subordinated debentures			$ 150,000

Other Borrowings - Summary of T

Other Borrowings - Summary of Terms of Outstanding Junior Subordinated Debentures (Details) - Trust Preferred Securities - Junior Subordinated Debentures	6 Months Ended
	Jun. 30, 2023 USD ($)
Debt Instrument [Line Items]
Issuance Amount	$ 136,643,000
Bridgeview Statutory Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 15,464,000
Rate	8.88%
Bridgeview Statutory Trust I | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	3.58%
Bridgeview Capital Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 15,464,000
Rate	8.61%
Bridgeview Capital Trust II | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	3.35%
First Midwest Capital Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 37,825,000
Variable rate (in percent)	6.95%
Rate	6.95%
St. Joseph Capital Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 5,155,000
Rate	7.26%
St. Joseph Capital Trust II | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	1.75%
Northern States Statutory Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 10,310,000
Rate	7.35%
Northern States Statutory Trust I | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	1.80%
Anchor Capital Trust III
Debt Instrument [Line Items]
Issuance Amount	$ 5,000,000
Rate	7.09%
Anchor Capital Trust III | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	1.55%
Great Lakes Statutory Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 6,186,000
Rate	6.95%
Great Lakes Statutory Trust II | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	1.40%
Home Federal Statutory    Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 15,464,000
Rate	7.20%
Home Federal Statutory    Trust I | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	1.65%
Monroe Bancorp Capital    Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 3,093,000
Rate	6.86%
Monroe Bancorp Capital    Trust I | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	1.60%
Tower Capital Trust 3
Debt Instrument [Line Items]
Issuance Amount	$ 9,279,000
Rate	7.19%
Tower Capital Trust 3 | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	1.69%
Monroe Bancorp Statutory    Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 5,155,000
Rate	7.15%
Monroe Bancorp Statutory    Trust II | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	1.60%
Great Lakes Statutory Trust III
Debt Instrument [Line Items]
Issuance Amount	$ 8,248,000
Rate	7.25%
Great Lakes Statutory Trust III | LIBOR
Debt Instrument [Line Items]
Variable rate (in percent)	1.70%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Schedule of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 5,277,426	$ 5,232,114	$ 5,128,595	$ 3,012,018
Other comprehensive income (loss) before    reclassifications	(80,281)	(233,620)	(15,752)	(568,906)
Amounts reclassified from AOCI to income	(19,994)	2,686	(6,459)	2,148
Balance at end of period	5,292,095	5,078,783	5,292,095	5,078,783
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(708,358)	(338,199)	(786,422)	(2,375)
Balance at end of period	(808,633)	(569,133)	(808,633)	(569,133)
Unrealized Gains and Losses on Available- for-Sale Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(611,260)	(314,364)	(642,346)	(2,950)
Other comprehensive income (loss) before    reclassifications	(90,121)	(122,776)	(62,902)	(433,929)
Amounts reclassified from AOCI to income	(12)	65	3,855	(196)
Balance at end of period	(701,393)	(437,075)	(701,393)	(437,075)
Unrealized Gains and Losses on Held-to- Maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(106,966)	(16,727)	(112,664)	0
Other comprehensive income (loss) before    reclassifications	0	(108,266)	1,325	(125,229)
Amounts reclassified from AOCI to income	3,822	2,794	8,195	3,030
Balance at end of period	(103,144)	(122,199)	(103,144)	(122,199)
Gains and Losses on Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	9,872	(7,132)	(31,549)	543
Other comprehensive income (loss) before    reclassifications	9,840	(2,578)	45,825	(9,748)
Amounts reclassified from AOCI to income	(23,808)	(165)	(18,372)	(670)
Balance at end of period	(4,096)	(9,875)	(4,096)	(9,875)
Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(4)	24	137	32
Other comprehensive income (loss) before    reclassifications	0	0	0	0
Amounts reclassified from AOCI to income	4	(8)	(137)	(16)
Balance at end of period	$ 0	$ 16	$ 0	$ 16

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Reclassifications out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Debt securities gains (losses), net	$ (17)		$ 85		$ 5,199	$ (257)
Income tax (expense) benefit	(47,393)		(24,964)		(88,814)	(16,250)
Interest income (expense)	(382,171)		(337,472)		(763,659)	(560,257)
Salaries and employee benefits	135,810		161,817		273,174	285,964
Net income (loss)	(155,036)	$ (146,600)	(114,985)	$ 27,586	(301,636)	(87,399)
Amount Reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	19,994		(2,686)		6,459	(2,148)
Amount Reclassified from AOCI | Unrealized gains and losses on    available-for-sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Debt securities gains (losses), net	17		(85)		(5,199)	257
Income tax (expense) benefit	(5)		20		1,344	(61)
Net income (loss)	12		(65)		(3,855)	196
Amount Reclassified from AOCI | Unrealized gains and losses on    held-to-maturity securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit	1,300		898		2,756	972
Interest income (expense)	(5,122)		(3,692)		(10,951)	(4,002)
Net income (loss)	(3,822)		(2,794)		(8,195)	(3,030)
Amount Reclassified from AOCI | Gains and losses on hedges    Interest rate contracts | Interest rate contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit	(8,304)		(54)		(6,448)	(218)
Interest income (expense)	32,112		219		24,820	888
Net income (loss)	23,808		165		18,372	670
Amount Reclassified from AOCI | Actuarial gains (losses)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit	2		(2)		(45)	(5)
Salaries and employee benefits	(6)		10		182	21
Net income (loss)	$ (4)		$ 8		$ 137	$ 16

Income Taxes - Summary of Diffe

Income Taxes - Summary of Differences in Taxes from Continuing Operations Computed at Statutory Rate (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Provision at statutory rate of 21%	$ 42,510	$ 29,389	$ 81,995	$ 21,766
Tax-exempt income:
Tax-exempt interest	(4,605)	(3,413)	(9,091)	(6,406)
Section 291/265 interest disallowance	532	38	918	66
Company-owned life insurance income	(945)	(938)	(1,572)	(1,656)
Tax-exempt income	(5,018)	(4,313)	(9,745)	(7,996)
State income taxes	8,552	4,085	16,693	758
Interim period effective rate adjustment	993	(3,967)	(723)	3,073
Tax credit investments - federal	(2,526)	(1,292)	(5,051)	(2,561)
Officer compensation limitation	1,040	402	2,080	651
Non-deductible FDIC premiums	2,037	885	4,147	1,371
Other, net	(195)	(225)	(582)	(812)
Income tax expense (benefit)	$ 47,393	$ 24,964	$ 88,814	$ 16,250
Effective tax rate	23.40%	17.80%	22.80%	15.70%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Income Taxes [Line Items]
Net deferred tax assets	$ 431,200,000	$ 435,800,000
Bad debt reserves, created for tax purposes	58,600,000
Valuation allowance recorded	0	0
Federal
Income Taxes [Line Items]
Operating loss carryforwards	72,700,000	81,500,000
State
Income Taxes [Line Items]
Operating loss carryforwards	$ 118,500,000	$ 124,400,000

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Percentage of periodic changes in fair value qualifies for hedge accounting treatment (in percent)	100%
Interest Income
Derivative [Line Items]
Reclassified interest income (expense)	$ 5,600
Interest Expense
Derivative [Line Items]
Reclassified interest income (expense)	8,900
Interest rate swaps on borrowings | Cash flow hedges | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	250,000	$ 150,000
Interest rate swaps on borrowings | Fair value hedges | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	700,000	300,000
Interest rate collars and floors on loan pools | Not Designated as Hedging Instrument | SOFR
Derivative [Line Items]
Notional amount	2,600,000
Interest rate collars and floors on loan pools | Cash flow hedges | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	1,400,000	1,900,000
Interest rate swaps on investment securities | Fair value hedges | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	909,957	909,957
Interest rate lock commitments | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	45,216	21,401
Forward mortgage loan contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	61,084	30,330
Counterparty interest rate swaps | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	8,206,655	5,220,363
Customer interest rate swaps | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	$ 5,589,059	$ 5,220,363

Derivative Financial Instrume_4

Derivative Financial Instruments - Summary of Fair Value of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Designated as Hedging Instrument
Derivative [Line Items]
Assets	$ 2,169	$ 11,764
Liabilities	15,563	47,859
Designated as Hedging Instrument | Cash flow hedges | Interest rate collars and floors on loan pools
Derivative [Line Items]
Notional	1,400,000	1,900,000
Assets	2,169	11,764
Liabilities	15,563	47,859
Designated as Hedging Instrument | Cash flow hedges | Interest rate swaps on borrowings
Derivative [Line Items]
Notional	250,000	150,000
Assets	0	0
Liabilities	0	0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on borrowings
Derivative [Line Items]
Notional	700,000	300,000
Assets	0	0
Liabilities	0	0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on investment securities
Derivative [Line Items]
Notional	909,957	909,957
Assets	0	0
Liabilities	0	0
Not Designated as Hedging Instrument
Derivative [Line Items]
Assets	182,155	157,237
Liabilities	324,836	332,845
Not Designated as Hedging Instrument | Interest rate lock commitments
Derivative [Line Items]
Notional	45,216	21,401
Assets	330	93
Liabilities	0	0
Not Designated as Hedging Instrument | Forward mortgage loan contracts
Derivative [Line Items]
Notional	61,084	30,330
Assets	164	32
Liabilities	0	0
Not Designated as Hedging Instrument | Customer interest rate swaps
Derivative [Line Items]
Notional	5,589,059	5,220,363
Assets	5,621	5,676
Liabilities	318,890	326,924
Not Designated as Hedging Instrument | Counterparty interest rate swaps
Derivative [Line Items]
Notional	8,206,655	5,220,363
Assets	175,581	151,111
Liabilities	5,662	5,711
Not Designated as Hedging Instrument | Customer foreign currency forward contracts
Derivative [Line Items]
Notional	12,851	8,341
Assets	441	253
Liabilities	22	42
Not Designated as Hedging Instrument | Counterparty foreign currency forward contracts
Derivative [Line Items]
Notional	12,894	8,297
Assets	18	72
Liabilities	$ 262	$ 168

Derivative Financial Instrume_5

Derivative Financial Instruments - Schedule of Effect of Derivative Instruments on the Consolidated Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative	$ 13,272	$ (3,418)	$ 61,121	$ (12,924)
Gain (Loss) Reclassified from AOCI into Income	32,112	219	24,820	888
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	1,087	(989)	1,055	(386)
Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	13,745	51,255	(47,217)	104,076
Gain (Loss) Recognized in Income on Related Hedged Items	(13,911)	(51,162)	47,122	(104,236)
Interest rate swaps on borrowings | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	(11,101)	(2,524)	(8,948)	(7,357)
Gain (Loss) Recognized in Income on Related Hedged Items	10,956	2,600	8,738	7,555
Interest rate swaps on investment securities | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	24,846	53,779	(38,269)	111,433
Gain (Loss) Recognized in Income on Related Hedged Items	(24,867)	(53,762)	38,384	(111,791)
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative	13,272	(3,418)	19,875	(12,924)
Gain (Loss) Reclassified from AOCI into Income	31,078	219	23,441	888
Interest rate contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	837	449	699	950
Mortgage contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	262	(1,503)	369	(1,374)
Foreign currency contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	$ (12)	$ 65	$ (13)	$ 38

Commitments, Contingencies, a_3

Commitments, Contingencies, and Financial Guarantees - Additional Information (Details)	6 Months Ended
	Jun. 30, 2023 USD ($) shares	Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items]
Term of standby letters of credit, years	1 year
Percent of unfunded loan commitments with fixed rates (in percent)	4%
Loan commitments floating rate, minimum (in percent)	0%
Loan commitments floating rate, maximum (in percent)	22%
Allowance for unfunded loan commitments	$ 37,000,000	$ 32,200,000
Class B Restricted Shares | Visa
Loss Contingencies [Line Items]
Restricted stock conversion ratio	1.5902
Investment owned, balance, shares (in shares) | shares	65,466
Investment owned, at cost	$ 0
Interest Rate Swap
Loss Contingencies [Line Items]
Notional amount	$ 441,900,000	$ 398,900,000

Commitments, Contingencies, a_4

Commitments, Contingencies, and Financial Guarantees - Loan Commitments and Standby Letters of Credit (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Unfunded loan commitments	$ 9,380,354	$ 8,979,334
Standby letters of credit	182,418	174,070
Carrying value of letters of credit	$ 900	$ 800

Fair Value - Schedule of Fair V

Fair Value - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	$ 71,953	$ 52,507
Investment securities available for sale	6,500,515	6,773,712
U.S. Treasury
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	312,412	200,927
U.S. government-sponsored entities and agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	1,174,356	1,175,080
Mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	4,097,771	4,369,902
States and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	598,782	663,852
Pooled trust preferred securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	10,994	10,811
Other securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	306,200	353,140
Fair Value on Recurring Basis | Carrying Value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	71,953	52,507
Loans held for sale	114,369	11,926
Derivative assets	184,324	169,001
Derivative liabilities	340,399	380,704
Fair Value on Recurring Basis | Carrying Value | U.S. Treasury
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	312,412	200,927
Fair Value on Recurring Basis | Carrying Value | U.S. government-sponsored entities and agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	1,174,356	1,175,080
Fair Value on Recurring Basis | Carrying Value | Mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	4,097,771	4,369,902
Fair Value on Recurring Basis | Carrying Value | States and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	598,782	663,852
Fair Value on Recurring Basis | Carrying Value | Pooled trust preferred securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	10,994	10,811
Fair Value on Recurring Basis | Carrying Value | Other securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	306,200	353,140
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	71,953	52,507
Loans held for sale	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	0	0
Loans held for sale	114,369	11,926
Derivative assets	184,324	169,001
Derivative liabilities	340,399	380,704
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	0	0
Loans held for sale	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | U.S. Treasury | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	312,412	200,927
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | U.S. Treasury | Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | U.S. Treasury | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | U.S. government-sponsored entities and agencies | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | U.S. government-sponsored entities and agencies | Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	1,174,356	1,175,080
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | U.S. government-sponsored entities and agencies | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Mortgage-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Mortgage-backed securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	4,097,771	4,369,902
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Mortgage-backed securities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | States and political subdivisions | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | States and political subdivisions | Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	598,782	663,852
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | States and political subdivisions | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Pooled trust preferred securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Pooled trust preferred securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	10,994	10,811
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Pooled trust preferred securities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Other securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	0	0
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Other securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	306,200	353,140
Fair Value on Recurring Basis | Estimate of Fair Value Measurement | Other securities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available for sale	$ 0	$ 0

Fair Value - Assets Measured at

Fair Value - Assets Measured at Fair Value on a Non-Recurring Basis (Details) - Fair Value on Non-recurring Basis - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Commercial Foreclosed Assets | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	$ 1,560
Commercial Foreclosed Assets | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0
Commercial Foreclosed Assets | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0
Commercial Foreclosed Assets | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	1,560
Commercial | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	12,615	$ 22,562
Commercial | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0
Commercial | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0
Commercial | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	12,615	22,562
Commercial real estate | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	85,891	48,026
Commercial real estate | Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0
Commercial real estate | Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	0	0
Commercial real estate | Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value	$ 85,891	$ 48,026

Fair Value - Additional Informa

Fair Value - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Allowance for credit losses	$ 300,555,000	$ 288,003,000	$ 300,555,000	$ 288,003,000	$ 298,711,000	$ 303,671,000	$ 280,507,000	$ 107,341,000
Provision for credit losses	14,787,000	9,165,000	28,224,000	117,901,000
Other real estate owned property write-downs	100,000	100,000	100,000	300,000
Valuation allowance for loan servicing rights with impairments	0		0
Valuation allowance for loan servicing rights with impairments, impairments (recoveries) during period	0	0	$ 0	0
Past due period of mortgage loans held for sale			90 days
Interest income for residential loans held for sale	300,000	700,000	$ 500,000	1,200,000
Fair Value on Non-recurring Basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other real estate	1,600,000		1,600,000
Impaired Commercial and Commercial Real Estate Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Principal amount of impaired commercial and commercial real estate loans	127,900,000		127,900,000			92,000,000
Allowance for credit losses	29,400,000		29,400,000			$ 21,500,000
Provision for credit losses	$ 7,900,000	$ 12,800,000	$ 19,800,000	$ 28,600,000

Fair Value - Quantitative Infor

Fair Value - Quantitative Information about Significant Unobservable Inputs Used in Fair Value Measurements (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Collateral Dependent Loans | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 12,615	$ 22,562
Collateral Dependent Loans | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 85,891	$ 48,026
Collateral Dependent Loans | Minimum | Discount for type of property, age of appraisal, and current status | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.09	0.10
Collateral Dependent Loans | Minimum | Discount for type of property, age of appraisal, and current status | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0	0.01
Collateral Dependent Loans | Maximum | Discount for type of property, age of appraisal, and current status | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.50	0.47
Collateral Dependent Loans | Maximum | Discount for type of property, age of appraisal, and current status | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.45	0.26
Collateral Dependent Loans | Weighted Average | Discount for type of property, age of appraisal, and current status | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.35	0.28
Collateral Dependent Loans | Weighted Average | Discount for type of property, age of appraisal, and current status | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.13	0.11
Foreclosed Assets | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 1,560
Foreclosed Assets | Minimum | Discount for type of property, age of appraisal, and current status | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.04
Foreclosed Assets | Maximum | Discount for type of property, age of appraisal, and current status | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.17
Foreclosed Assets | Weighted Average | Discount for type of property, age of appraisal, and current status | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.06

Fair Value - Schedule of Differ

Fair Value - Schedule of Difference between the Aggregate Fair Value and the Aggregate Remaining Principal Balance (Details) - Loans held for sale - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	$ 114,369	$ 11,926
Difference	387	221
Contractual Principal	$ 113,982	$ 11,705

Fair Value - Changes in Fair Va

Fair Value - Changes in Fair Value for Items Measured at Fair Value Pursuant to Election of the Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Schedule of Trading Securities and Other Trading Assets [Line Items]
Interest Income	$ 382,171	$ 337,472	$ 763,659	$ 560,257
Interest (Expense)	(162,731)	(16,886)	(276,892)	(29,606)
Loans held for sale
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Gains and (Losses)	229	278	176	(1,065)
Interest Income	0	9	0	9
Interest (Expense)	(7)	0	(10)	(3)
Total Changes in Fair Values Included in Current Period Earnings	$ 222	$ 287	$ 166	$ (1,059)

Fair Value - Carrying Amounts a

Fair Value - Carrying Amounts and Estimated Fair Values of Financial Instruments, Not Carried at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, due from banks, money market,    and other interest-earning investments	$ 1,197,886	$ 728,412
Loans, net	32,131,918	30,819,970
Accrued interest receivable	205,198	190,521
Noninterest-bearing demand deposits	10,532,838	11,930,798
Time deposits	5,265,664	3,013,780
Federal funds purchased and interbank borrowings	136,060	581,489
Outstanding at period end	311,447	432,804	$ 476,173
Federal Home Loan Bank advances	4,771,183	3,829,018
Other borrowings	815,318	743,003
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government-sponsored entities and agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity		0
Significant Other Observable Inputs (Level 2) | U.S. government-sponsored entities and agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity		656,358
Significant Other Observable Inputs (Level 2) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity		982,963
Significant Other Observable Inputs (Level 2) | States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity		1,004,361
Significant Unobservable Inputs (Level 3) | U.S. government-sponsored entities and agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity		0
Significant Unobservable Inputs (Level 3) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity		0
Significant Unobservable Inputs (Level 3) | States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity		0
Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, due from banks, money market,    and other interest-earning investments	1,197,886	728,412
Accrued interest receivable	205,198	190,521
Noninterest-bearing demand deposits	10,532,838	11,930,798
Checking, NOW, savings, and money market    interest-bearing deposits	20,432,813	20,056,252
Time deposits	5,265,664	3,013,780
Federal funds purchased and interbank borrowings	136,060	581,489
Outstanding at period end	311,447	432,804
Federal Home Loan Bank advances	4,771,183	3,829,018
Other borrowings	815,318	743,003
Accrued interest payable	42,897	19,547
Standby letters of credit	949	755
Commitments to extend credit	0	0
Carrying Value | U.S. government-sponsored entities and agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	822,517	819,168
Carrying Value | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	1,070,687	1,106,817
Carrying Value | States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	1,161,793	1,163,162
Carrying Value | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	9,569,141	9,386,862
Carrying Value | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	13,312,233	12,317,825
Carrying Value | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	6,664,059	6,438,525
Carrying Value | Consumer credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	2,586,485	2,676,758
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, due from banks, money market,    and other interest-earning investments	1,197,886	728,412
Accrued interest receivable	801	758
Noninterest-bearing demand deposits	10,532,838	11,930,798
Checking, NOW, savings, and money market    interest-bearing deposits	20,432,813	20,056,252
Time deposits	0	0
Federal funds purchased and interbank borrowings	136,060	581,489
Outstanding at period end	311,447	432,804
Federal Home Loan Bank advances	0	0
Other borrowings	0	0
Accrued interest payable	0	0
Standby letters of credit	0	0
Commitments to extend credit	0	0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government-sponsored entities and agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Consumer credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, due from banks, money market,    and other interest-earning investments	0	0
Accrued interest receivable	54,449	52,081
Noninterest-bearing demand deposits	0	0
Checking, NOW, savings, and money market    interest-bearing deposits	0	0
Time deposits	5,209,887	2,976,389
Federal funds purchased and interbank borrowings	0	0
Outstanding at period end	0	0
Federal Home Loan Bank advances	4,526,920	3,739,780
Other borrowings	781,468	703,156
Accrued interest payable	42,897	19,547
Standby letters of credit	0	0
Commitments to extend credit	0	0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | U.S. government-sponsored entities and agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	655,446
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	928,496
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	1,019,116
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Consumer credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	0	0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, due from banks, money market,    and other interest-earning investments	0	0
Accrued interest receivable	149,948	137,682
Noninterest-bearing demand deposits	0	0
Checking, NOW, savings, and money market    interest-bearing deposits	0	0
Time deposits	0	0
Federal funds purchased and interbank borrowings	0	0
Outstanding at period end	0	0
Federal Home Loan Bank advances	0	0
Other borrowings	0	0
Accrued interest payable	0	0
Standby letters of credit	949	755
Commitments to extend credit	3,621	3,666
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | U.S. government-sponsored entities and agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	9,330,160	9,066,583
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	12,907,098	11,867,851
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	5,831,513	5,372,491
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Consumer credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	$ 2,537,633	$ 2,557,115