Old National Bancorp (ONB) 10-Q 30 Oct 24 2024 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2024	Oct. 30, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
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)		318,972,000
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
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	Sep. 30, 2024	Dec. 31, 2023
Assets
Cash and due from banks	$ 498,120	$ 430,866
Money market and other interest-earning investments	693,450	744,192
Total cash and cash equivalents	1,191,570	1,175,058
Equity securities, at fair value	89,249	80,372
Investment securities - available-for-sale, at fair value (amortized cost $8,233,232 and $7,684,889, respectively)	7,432,440	6,713,055
Investment securities - held-to-maturity, at amortized cost (fair value $2,604,055 and $2,601,188, respectively)	2,969,343	3,013,493
Federal Home Loan Bank/Federal Reserve Bank stock, at cost	378,717	365,588
Loans held-for-sale, at fair value	62,376	32,006
Loans:
Total loans, net of unearned income	36,400,643	32,991,927
Allowance for credit losses on loans	(380,840)	(307,610)
Net loans	36,019,803	32,684,317
Premises and equipment, net	599,528	565,396
Goodwill	2,176,999	1,998,716
Other intangible assets	128,085	102,250
Company-owned life insurance	863,723	767,902
Accrued interest receivable and other assets	1,690,460	1,591,683
Total assets	53,602,293	49,089,836
Deposits:
Noninterest-bearing demand	9,429,285	9,664,247
Interest-bearing:
Checking and NOW	7,815,463	7,331,487
Savings	4,781,447	5,099,186
Money market	11,663,557	9,561,116
Time deposits	7,155,994	5,579,144
Total deposits	40,845,746	37,235,180
Federal funds purchased and interbank borrowings	135,263	390
Securities sold under agreements to repurchase	244,626	285,206
Federal Home Loan Bank advances	4,471,153	4,280,681
Other borrowings	598,054	764,870
Accrued expenses and other liabilities	940,153	960,609
Total liabilities	47,234,995	43,526,936
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,    318,955 and 292,655 shares issued and outstanding, respectively	318,955	292,655
Capital surplus	4,560,576	4,159,924
Retained earnings	1,861,023	1,618,630
Accumulated other comprehensive income (loss), net of tax	(603,756)	(738,809)
Total shareholders’ equity	6,367,298	5,562,900
Total liabilities and shareholders’ equity	53,602,293	49,089,836
Commercial
Loans:
Total loans, net of unearned income	10,408,095	9,512,230
Allowance for credit losses on loans	(136,842)	(118,333)
Commercial real estate
Loans:
Total loans, net of unearned income	16,356,216	14,140,629
Allowance for credit losses on loans	(204,899)	(155,099)
Residential real estate
Loans:
Total loans, net of unearned income	6,757,896	6,699,443
Allowance for credit losses on loans	(21,488)	(20,837)
Consumer
Loans:
Total loans, net of unearned income	$ 2,878,436	$ 2,639,625

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Available-for-sale, amortized cost	$ 8,233,232	$ 7,684,889
Investment securities - held-to-maturity, fair value	$ 2,604,055	$ 2,601,188
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)	318,955	292,655
Common stock, shares outstanding (in shares)	318,955	292,655

Consolidated Statements of Inco

Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Loans including fees:
Taxable	$ 561,428	$ 474,387	$ 1,594,411	$ 1,334,658
Nontaxable	12,703	11,181	39,048	32,318
Investment securities:
Taxable	83,567	66,924	241,349	191,797
Nontaxable	10,531	10,833	31,769	33,039
Money market and other interest-earning investments	11,696	13,194	32,992	25,258
Total interest income	679,925	576,519	1,939,569	1,617,070
Interest Expense
Deposits	229,727	147,428	630,972	310,995
Federal funds purchased and interbank borrowings	292	910	3,239	11,404
Securities sold under agreements to repurchase	612	710	2,168	2,389
Federal Home Loan Bank advances	47,719	40,382	133,529	123,466
Other borrowings	9,851	12,003	33,058	30,071
Total interest expense	288,201	201,433	802,966	478,325
Net interest income	391,724	375,086	1,136,603	1,138,745
Provision for credit losses	28,497	19,068	83,602	47,292
Net interest income after provision for credit losses	363,227	356,018	1,053,001	1,091,453
Noninterest Income
Wealth and investment services fees	29,117	26,687	86,779	80,128
Service charges on deposit accounts	20,350	18,524	57,598	53,278
Debit card and ATM fees	11,362	10,818	32,409	31,453
Mortgage banking revenue	7,669	5,063	19,211	12,628
Capital markets income	7,426	5,891	15,055	19,003
Company-owned life insurance	5,315	3,740	14,488	11,624
Debt securities gains (losses), net	(76)	(241)	(90)	(5,440)
Other income	12,975	10,456	33,481	30,574
Total noninterest income	94,138	80,938	258,931	233,248
Noninterest Expense
Salaries and employee benefits	147,494	131,541	456,490	404,715
Occupancy	27,130	25,795	80,696	80,162
Equipment	9,888	8,284	27,263	23,394
Marketing	11,036	9,448	32,954	28,698
Technology	23,343	20,592	67,368	59,850
Communication	4,681	4,075	13,161	12,768
Professional fees	7,278	5,956	24,236	19,085
FDIC assessment	11,722	9,000	32,711	29,028
Amortization of intangibles	7,411	6,040	20,291	18,286
Amortization of tax credit investments	3,277	2,644	8,773	8,167
Other expense	19,023	21,401	53,656	57,918
Total noninterest expense	272,283	244,776	817,599	742,071
Income before income taxes	185,082	192,180	494,333	582,630
Income tax expense	41,280	44,304	109,018	133,118
Net income	143,802	147,876	385,315	449,512
Preferred dividends	(4,034)	(4,034)	(12,101)	(12,101)
Net income applicable to common shareholders	$ 139,768	$ 143,842	$ 373,214	$ 437,411
Net income per common share - basic (in dollars per share)	$ 0.44	$ 0.49	$ 1.21	$ 1.50
Net income per common share - diluted (in dollars per share)	$ 0.44	$ 0.49	$ 1.21	$ 1.50
Weighted average number of common shares outstanding - basic (in shares)	315,622	290,648	307,426	290,763
Weighted average number of common shares outstanding - diluted (in shares)	317,331	291,717	308,605	291,809
Dividends per common share (in dollars per share)	$ 0.14	$ 0.14	$ 0.42	$ 0.42

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 143,802	$ 147,876	$ 385,315	$ 449,512
Change in debt securities available-for-sale:
Unrealized holding gains (losses) for the period	216,995	(208,626)	154,498	(304,061)
Reclassification adjustment for securities (gains) losses realized in income	76	241	90	5,440
Income tax effect	(54,153)	51,903	(38,470)	83,092
Unrealized gains (losses) on available-for-sale securities	162,918	(156,482)	116,118	(215,529)
Change in securities held-to-maturity:
Amortization of unrealized losses on securities transferred     from available-for-sale	4,740	5,623	13,434	16,574
Income tax effect	(1,203)	(1,430)	(3,411)	(2,861)
Changes from securities held-to-maturity	3,537	4,193	10,023	13,713
Change in hedges:
Net unrealized derivative gains (losses) on hedges	23,654	(15,574)	(2,540)	45,547
Reclassification adjustment for (gains) losses realized in net income	4,936	4,927	14,560	(19,893)
Income tax effect	(7,393)	2,754	(3,108)	(6,094)
Changes from hedges	21,197	(7,893)	8,912	19,560
Change in defined benefit pension plans:
Amortization of net (gains) losses recognized in income	0	0	0	(182)
Income tax effect	0	0	0	45
Changes from defined benefit pension plans	0	0	0	(137)
Other comprehensive income (loss), net of tax	187,652	(160,182)	135,053	(182,393)
Comprehensive income (loss)	$ 331,454	$ (12,306)	$ 520,368	$ 267,119

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)
Beginning balance 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	146,600				146,600
Other comprehensive income (loss)	78,064					78,064
Cash dividends:
Common	(41,088)				(41,088)
Preferred	(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)
Ending balance at Mar. 31, 2023	5,277,426	230,500	291,922	4,144,730	1,318,632	(708,358)
Beginning balance 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	449,512
Other comprehensive income (loss)	(182,393)
Acquisition of CapStar Financial Holdings, Inc.	0
Ending balance at Sep. 30, 2023	5,239,537	230,500	292,586	4,153,977	1,531,289	(968,815)
Beginning balance 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	155,036				155,036
Other comprehensive income (loss)	(100,275)					(100,275)
Cash dividends:
Common	(40,932)				(40,932)
Preferred	(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)
Ending balance at Jun. 30, 2023	5,292,095	230,500	292,597	4,149,089	1,428,542	(808,633)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	147,876				147,876
Other comprehensive income (loss)	(160,182)					(160,182)
Cash dividends:
Common	(40,933)				(40,933)
Preferred	(4,034)				(4,034)
Common stock issued	263		20	243
Common stock repurchased	(451)		(31)	(420)
Share-based compensation expense	4,914			4,914
Stock activity under incentive compensation plans	(11)			151	(162)
Ending balance at Sep. 30, 2023	5,239,537	230,500	292,586	4,153,977	1,531,289	(968,815)
Beginning balance at Dec. 31, 2023	5,562,900	230,500	292,655	4,159,924	1,618,630	(738,809)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	120,284				120,284
Other comprehensive income (loss)	(40,819)					(40,819)
Cash dividends:
Common	(41,060)				(41,060)
Preferred	(4,034)				(4,034)
Common stock issued	265		17	248
Common stock repurchased	(7,182)		(434)	(6,748)
Share-based compensation expense	5,491			5,491
Stock activity under incentive compensation plans	(437)		1,092	(1,373)	(156)
Ending balance at Mar. 31, 2024	5,595,408	230,500	293,330	4,157,542	1,693,664	(779,628)
Beginning balance at Dec. 31, 2023	5,562,900	230,500	292,655	4,159,924	1,618,630	(738,809)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	385,315
Other comprehensive income (loss)	135,053
Acquisition of CapStar Financial Holdings, Inc.	417,598
Ending balance at Sep. 30, 2024	6,367,298	230,500	318,955	4,560,576	1,861,023	(603,756)
Beginning balance at Mar. 31, 2024	5,595,408	230,500	293,330	4,157,542	1,693,664	(779,628)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	121,229				121,229
Other comprehensive income (loss)	(11,780)					(11,780)
Acquisition of CapStar Financial Holdings, Inc.	417,598		24,014	393,584
Cash dividends:
Common	(44,656)				(44,656)
Preferred	(4,033)				(4,033)
Common stock issued	265		16	249
Common stock repurchased	(1,276)		(77)	(1,199)
Share-based compensation expense	9,062			9,062
Stock activity under incentive compensation plans	(6,745)		1,686	(8,273)	(158)
Ending balance at Jun. 30, 2024	6,075,072	230,500	318,969	4,550,965	1,766,046	(791,408)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	143,802				143,802
Other comprehensive income (loss)	187,652					187,652
Cash dividends:
Common	(44,654)				(44,654)
Preferred	(4,034)				(4,034)
Common stock issued	254		15	239
Common stock repurchased	(287)		(15)	(272)
Share-based compensation expense	8,703			8,703
Stock activity under incentive compensation plans	790		(14)	941	(137)
Ending balance at Sep. 30, 2024	$ 6,367,298	$ 230,500	$ 318,955	$ 4,560,576	$ 1,861,023	$ (603,756)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Dividends per common share (in dollars per share)	$ 0.14	$ 0.14	$ 0.14	$ 0.14	$ 0.14	$ 0.14
Preferred dividends (in dollars per share)	$ 17.50	$ 17.50	$ 17.50	$ 17.50	$ 17.50	$ 17.50

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash Flows From Operating Activities
Net income	$ 385,315	$ 449,512
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	28,449	28,162
Amortization of other intangible assets	20,291	18,286
Amortization of tax credit investments	8,773	8,167
Net premium amortization on investment securities	6,650	8,673
Accretion income related to acquired loans	(26,531)	(17,484)
Share-based compensation expense	23,256	22,903
Provision for credit losses	83,602	47,292
Debt securities (gains) losses, net	90	5,440
Net (gains) losses on sales of loans and other assets	(7,084)	(727)
Increase in cash surrender value of company-owned life insurance	(14,488)	(11,624)
Residential real estate loans originated for sale	(632,726)	(366,340)
Proceeds from sales of residential real estate loans	615,624	366,485
(Increase) decrease in interest receivable	11,447	(18,982)
(Increase) decrease in other assets	(38,458)	(56,116)
Increase (decrease) in accrued expenses and other liabilities	(77,681)	(40,132)
Net cash flows provided by (used in) operating activities	386,529	443,515
Cash Flows From Investing Activities
Cash received from merger, net	177,791	0
Purchases of investment securities available-for-sale	(1,263,354)	(626,820)
Purchases of investment securities held-to-maturity	0	(1,941)
Purchases of Federal Home Loan Bank/Federal Reserve Bank stock	(13,129)	(99,158)
Purchases of equity securities	(5,462)	(20,862)
Proceeds from maturities, prepayments, and calls of investment securities available-for-sale	755,417	614,782
Proceeds from sales of investment securities available-for-sale	297,858	54,056
Proceeds from maturities, prepayments, and calls of investment securities held-to-maturity	55,069	76,276
Proceeds from sales of Federal Home Loan Bank/Federal Reserve Bank stock	14,426	47,738
Proceeds from sales of equity securities	2,755	2,610
Loan originations and payments, net	(1,327,734)	(2,269,544)
Proceeds from sales of commercial loans	63,434	679,952
Proceeds from company-owned life insurance death benefits	10,212	5,865
Proceeds from sales of premises and equipment and other assets	1,585	3,513
Purchases of premises and equipment and other assets	(23,513)	(28,074)
Net cash flows provided by (used in) investing activities	(1,254,645)	(1,561,607)
Net increase (decrease) in:
Deposits	1,050,442	2,251,846
Federal funds purchased and interbank borrowings	134,873	(580,571)
Securities sold under agreements to repurchase	(40,580)	(153,743)
Other borrowings	(209,675)	114,251
Payments for maturities of Federal Home Loan Bank advances	(1,300,000)	(1,850,150)
Proceeds from Federal Home Loan Bank advances	1,400,000	2,450,000
Cash dividends paid	(142,471)	(135,054)
Common stock repurchased	(8,745)	(44,266)
Common stock issued	784	797
Net cash flows provided by (used in) financing activities	884,628	2,053,110
Net increase (decrease) in cash and cash equivalents	16,512	935,018
Cash and cash equivalents at beginning of period	1,175,058	728,412
Cash and cash equivalents at end of period	1,191,570	1,663,430
Supplemental Cash Flow Information:
Total interest paid	797,929	450,939
Total income taxes paid (net of refunds)	54,904	158,478
Noncash Investing and Financing Activities:
Common stock issued for merger, net	417,598	0
Operating lease right-of-use assets obtained in exchange for lease obligations	22,367	7,899
Finance lease right-of-use assets obtained in exchange for lease obligations	$ 16,703	$ 10,019

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2024
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 September 30, 2024 and December 31, 2023, and the results of its operations for the three and nine months ended September 30, 2024 and 2023. 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, 2023. 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.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2024
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Accounting Guidance Adopted in 2024 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, including interim periods within those fiscal years. The adoption of this guidance on January 1, 2024 did not have a material impact 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. The adoption of this guidance on a modified retrospective basis on January 1, 2024 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. As of September 30, 2024, substantially all of the Company’s LIBOR exposure was addressed and remaining LIBOR-based contracts are expected to transition to alternate reference rates at their next index reset dates. Old National believes the adoption of this guidance on activities subsequent to September 30, 2024 will not have a material impact on the consolidated financial statements. Accounting Guidance Pending Adoption FASB ASC 280 – In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendments are intended to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. In addition, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. A public entity should apply the amendments retrospectively to all prior periods presented in the financial statements. Upon transition, the segment expense categories and amounts disclosed in the prior periods should be based on the significant segment expense categories identified and disclosed in the period of adoption. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements. FASB ASC 740 – In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures . Among other things, these amendments require that public business entities on an annual basis disclose additional information in specified categories with respect to the reconciliation of the effective tax rate to the statutory rate for federal, state, and foreign income taxes. It also requires greater detail about individual reconciling items in the rate reconciliation to the extent the impact of those items exceeds a quantitative threshold (if the effect of those reconciling items is equal to or greater than 5 percent of the amount computed by multiplying pretax income (loss) by the applicable statutory income tax rate). In addition, the ASU requires information pertaining to taxes paid (net of refunds received) to be disaggregated for federal, state, and foreign taxes and further disaggregated for specific jurisdictions to the extent the related amounts are equal to or greater than 5 percent of total income taxes paid (net of refunds received). The amendments in this ASU are effective for annual periods beginning after December 15, 2024. Early adoption is permitted. 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	9 Months Ended
	Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Acquisition and Divestiture Activity	ACQUISITION AND DIVESTITURE ACTIVITY Acquisition CapStar Financial Holdings, Inc. On April 1, 2024, Old National completed its acquisition of CapStar Financial Holdings, Inc. (“CapStar”) and its wholly-owned subsidiary, CapStar Bank, in an all-stock transaction. This partnership strengthens Old National’s Nashville, Tennessee presence and adds several new high-growth markets. Pursuant to the terms of the merger agreement, each outstanding share of CapStar common stock was converted into the right to receive 1.155 shares of Old National common stock plus cash in lieu of fractional shares. All system conversions related to the transaction were completed in early July 2024. The assets acquired and liabilities assumed, both intangible and tangible, were recorded at their estimated fair values as of the merger date and have been accounted for under the acquisition method of accounting. The following table presents the preliminary valuation of the assets acquired and liabilities assumed and the fair value of consideration as of the merger date: (dollars and shares in thousands) April 1, Assets Cash and cash equivalents $ 177,791 Investment securities 342,490 FHLB/Federal Reserve Bank stock 14,426 Loans held-for-sale 21,159 Loans, net of allowance for credit losses 2,120,627 Premises and equipment 22,481 Goodwill 178,283 Other intangible assets 46,125 Company-owned life insurance 91,475 Other assets 94,312 Total assets $ 3,109,169 Liabilities Deposits $ 2,560,124 Federal Home Loan Bank advances 75,000 Other borrowings 30,000 Accrued expenses and other liabilities 26,447 Total liabilities $ 2,691,571 Fair value of consideration Common stock (24,014 shares issued at $17.41 per share) $ 417,598 Total consideration $ 417,598 Goodwill related to this merger will not be deductible for tax purposes. Other intangible assets acquired included core deposit intangibles. The estimated fair value of the core deposit intangible was $46.1 million and is being amortized over an estimated useful life of 10 years. The fair value of PCD assets was $610.7 million on the date of merger. The gross contractual amounts receivable relating to the PCD assets was $679.3 million. Old National estimates, on the date of the merger, that $26.7 million of the contractual cash flows specific to the PCD assets will not be collected. Transaction and integration costs primarily associated with the CapStar merger have been expensed for the three and nine months ended September 30, 2024 totaling $6.9 million and $29.2 million, respectively, and additional transaction and integration costs will be expensed in future periods as incurred.

Net Income Per Common Share

Net Income Per Common Share	9 Months Ended
	Sep. 30, 2024
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 Nine Months Ended (dollars and shares in thousands, except per share data) 2024 2023 2024 2023 Net income $ 143,802 $ 147,876 $ 385,315 $ 449,512 Preferred dividends (4,034) (4,034) (12,101) (12,101) Net income applicable to common shares $ 139,768 $ 143,842 $ 373,214 $ 437,411 Weighted average common shares outstanding: Weighted average common shares outstanding (basic) 315,622 290,648 307,426 290,763 Effect of dilutive securities: Restricted stock 1,709 1,069 1,179 1,045 Stock appreciation rights — — — 1 Weighted average diluted shares outstanding 317,331 291,717 308,605 291,809 Basic Net Income Per Common Share $ 0.44 $ 0.49 $ 1.21 $ 1.50 Diluted Net Income Per Common Share $ 0.44 $ 0.49 $ 1.21 $ 1.50

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2024
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 portfolio and the corresponding amounts of gross unrealized gains, unrealized losses, and basis adjustments in AOCI. (dollars in thousands) Amortized Unrealized Unrealized Basis Adjustments (1) Fair September 30, 2024 Available-for-Sale U.S. Treasury $ 260,893 $ 157 $ (13,076) $ (37,696) $ 210,278 U.S. government-sponsored entities and agencies 1,506,552 227 (160,832) (51,669) 1,294,278 Mortgage-backed securities - Agency 5,608,308 20,435 (527,687) — 5,101,056 States and political subdivisions 527,887 1,199 (21,042) 3,521 511,565 Pooled trust preferred securities 13,805 — (2,648) — 11,157 Other securities 315,787 786 (12,467) — 304,106 Total available-for-sale securities $ 8,233,232 $ 22,804 $ (737,752) $ (85,844) $ 7,432,440 December 31, 2023 Available-for-Sale U.S. Treasury $ 449,817 $ 154 $ (11,941) $ (41,297) $ 396,733 U.S. government-sponsored entities and agencies 1,487,879 33 (192,717) (63,931) 1,231,264 Mortgage-backed securities - Agency 4,835,319 3,093 (621,852) — 4,216,560 States and political subdivisions 554,509 878 (23,057) 2,930 535,260 Pooled trust preferred securities 13,797 — (2,460) — 11,337 Other securities 343,568 449 (22,116) — 321,901 Total available-for-sale securities $ 7,684,889 $ 4,607 $ (874,143) $ (102,298) $ 6,713,055 (1) Basis adjustments represent the amount of fair value hedging adjustments included in the carrying amounts of fixed-rate investment securities assets designated in fair value hedging arrangements. See Note 15 to the consolidated financial statements for additional information regarding these derivative financial instruments. The following table summarizes the amortized cost and fair value of the held-to-maturity investment securities portfolio and the corresponding amounts of gross unrecognized gains and losses. (dollars in thousands) Amortized Unrecognized Unrecognized Fair September 30, 2024 Held-to-Maturity U.S. government-sponsored entities and agencies $ 831,160 $ — $ (130,687) $ 700,473 Mortgage-backed securities - Agency 984,770 — (130,454) 854,316 States and political subdivisions 1,153,563 1,680 (105,827) 1,049,416 Allowance for securities held-to-maturity (150) — — (150) Total held-to-maturity securities $ 2,969,343 $ 1,680 $ (366,968) $ 2,604,055 December 31, 2023 Held-to-Maturity U.S. government-sponsored entities and agencies $ 825,953 $ — $ (154,827) $ 671,126 Mortgage-backed securities - Agency 1,029,131 — (147,137) 881,994 States and political subdivisions 1,158,559 1,800 (112,141) 1,048,218 Allowance for securities held-to-maturity (150) — — (150) Total held-to-maturity securities $ 3,013,493 $ 1,800 $ (414,105) $ 2,601,188 Substantially all of the mortgage-backed securities in the investment portfolio are residential mortgage-backed 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 Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Proceeds $ 22,545 $ 28,531 $ 370,870 $ 111,419 Realized gains 90 54 98 1,002 Realized losses (166) (295) (188) (6,442) 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. September 30, 2024 (dollars in thousands) Amortized Fair Weighted Maturity Available-for-Sale Within one year $ 408,483 $ 409,578 4.31 % One to five years 2,841,655 2,728,724 3.87 Five to ten years 3,716,071 3,257,518 2.39 Beyond ten years 1,267,023 1,036,620 2.66 Total $ 8,233,232 $ 7,432,440 3.04 % Held-to-Maturity Within one year $ 153 $ 146 2.20 % One to five years 164,752 139,140 2.56 Five to ten years 1,248,019 1,115,473 2.65 Beyond ten years 1,556,419 1,349,296 2.72 Total $ 2,969,343 $ 2,604,055 2.68 % 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 September 30, 2024 Available-for-Sale U.S. Treasury $ 1,998 $ (4) $ 193,148 $ (13,072) $ 195,146 $ (13,076) U.S. government-sponsored entities 55,754 (114) 1,209,200 (160,718) 1,264,954 (160,832) Mortgage-backed securities - Agency 93,981 (786) 3,633,891 (526,901) 3,727,872 (527,687) States and political subdivisions 22,970 (114) 306,635 (20,928) 329,605 (21,042) Pooled trust preferred securities — — 11,157 (2,648) 11,157 (2,648) Other securities 47,408 (157) 209,600 (12,310) 257,008 (12,467) Total available-for-sale $ 222,111 $ (1,175) $ 5,563,631 $ (736,577) $ 5,785,742 $ (737,752) December 31, 2023 Available-for-Sale U.S. Treasury $ 8,937 $ (42) $ 191,027 $ (11,899) $ 199,964 $ (11,941) U.S. government-sponsored entities — — 1,189,314 (192,717) 1,189,314 (192,717) Mortgage-backed securities - Agency 90,145 (710) 3,835,552 (621,142) 3,925,697 (621,852) States and political subdivisions 86,865 (495) 259,767 (22,562) 346,632 (23,057) Pooled trust preferred securities — — 11,337 (2,460) 11,337 (2,460) Other securities 39,032 (229) 255,888 (21,887) 294,920 (22,116) Total available-for-sale $ 224,979 $ (1,476) $ 5,742,885 $ (872,667) $ 5,967,864 $ (874,143) 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 September 30, 2024 Held-to-Maturity U.S. government-sponsored entities $ — $ — $ 700,473 $ (130,687) $ 700,473 $ (130,687) Mortgage-backed securities - Agency — — 854,316 (130,454) 854,316 (130,454) States and political subdivisions 671 (1) 978,641 (105,826) 979,312 (105,827) Total held-to-maturity $ 671 $ (1) $ 2,533,430 $ (366,967) $ 2,534,101 $ (366,968) December 31, 2023 Held-to-Maturity U.S. government-sponsored entities $ — $ — $ 671,126 $ (154,827) $ 671,126 $ (154,827) Mortgage-backed securities - Agency — — 881,994 (147,137) 881,994 (147,137) States and political subdivisions — — 977,154 (112,141) 977,154 (112,141) Total held-to-maturity $ — $ — $ 2,530,274 $ (414,105) $ 2,530,274 $ (414,105) 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 $114.2 million at September 30, 2024 and $127.6 million at December 31, 2023. 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 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 September 30, 2024 and December 31, 2023. Accrued interest receivable on the securities portfolio is excluded from the estimate of credit losses and totaled $42.5 million at September 30, 2024 and $50.3 million at December 31, 2023. At September 30, 2024, Old National’s securities portfolio consisted of 3,013 securities, 2,452 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 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 September 30, 2024, 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 pooled trust preferred securities 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 nine months ended September 30, 2024 or 2023. 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 $89.2 million at September 30, 2024 and $80.4 million at December 31, 2023. There were gains on equity securities of $1.5 million during the three months ended September 30, 2024 and $1.4 million during the nine months ended September 30, 2024, compared to losses of $0.8 million during the three months ended September 30, 2023 and $1.4 million during the nine months ended September 30, 2023. Alternative Investments Old National has alternative investments without readily determinable fair values that are included in other assets totaling $580.3 million at September 30, 2024 and $449.3 million at December 31, 2023. These investments consisted of $292.6 million of illiquid investments in partnerships, limited liability companies, and other ownership interests that support affordable housing and $287.7 million of economic development and community revitalization initiatives in low-to-moderate income neighborhoods at September 30, 2024, compared to $252.2 million and $197.1 million for the same investment types, respectively, at December 31, 2023. There have been no impairments or adjustments on equity securities without readily determinable fair values, except for amortization of tax credit investments in the nine months ended September 30, 2024 and 2023. See Note 9 to the consolidated financial statements for detail regarding these investments.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2024
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 and Southeast regions of the United States. Old National manages concentrations of credit exposure by industry, product, geography, client relationship, and loan size. Old National has loan participations, which qualify as participating interests, with other financial institutions. At September 30, 2024, these loans totaled $3.4 billion, of which $1.5 billion had been sold to other financial institutions and $1.9 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. 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 Portfolio (dollars in thousands) September 30, 2024 Commercial (1) $ 10,408,095 $ (224,732) $ 10,183,363 Commercial real estate 16,356,216 (175,628) 16,180,588 BBCC N/A 400,360 400,360 Residential real estate 6,757,896 — 6,757,896 Consumer 2,878,436 (2,878,436) N/A Indirect N/A 1,096,234 1,096,234 Direct N/A 419,201 419,201 Home equity N/A 1,363,001 1,363,001 Total loans (2) $ 36,400,643 $ — $ 36,400,643 Allowance for credit losses on loans (380,840) — (380,840) Net loans $ 36,019,803 $ — $ 36,019,803 December 31, 2023 Commercial (1) $ 9,512,230 $ (232,764) $ 9,279,466 Commercial real estate 14,140,629 (169,058) 13,971,571 BBCC N/A 401,822 401,822 Residential real estate 6,699,443 — 6,699,443 Consumer 2,639,625 (2,639,625) N/A Indirect N/A 1,050,982 1,050,982 Direct N/A 523,172 523,172 Home equity N/A 1,065,471 1,065,471 Total loans (2) $ 32,991,927 $ — $ 32,991,927 Allowance for credit losses on loans (307,610) — (307,610) Net loans $ 32,684,317 $ — $ 32,684,317 (1) Includes direct finance leases of $133.6 million at September 30, 2024 and $169.7 million at December 31, 2023. (2) Includes unearned income of $183.4 million at September 30, 2024 and $93.7 million at December 31, 2023. 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 classified 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 241%, Old National Bank’s applicable investor commercial real estate loans as a percentage of its Tier 1 capital plus the allowance for credit losses attributable to loans and leases remained below the regulatory guideline limit of 300% at September 30, 2024. 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 such changes as 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 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 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. Home Equity Home equity loans are generally secured by 1-4 family residences that are owner-occupied. Old National has established 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 monitoring of updated borrower credit scores. Allowance for Credit Losses Loans Credit loss assumptions used when computing the level of expected credit losses 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. 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, global military conflicts, and global trade 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 September 30, 2024 Commercial $ 138,460 $ 3,245 $ (11,512) $ 308 $ 6,341 $ 136,842 Commercial real estate 189,911 (442) (2,799) 214 18,015 204,899 BBCC 2,897 — (676) 56 415 2,692 Residential real estate 23,135 — — 64 (1,711) 21,488 Indirect 1,233 — (1,715) 290 5,853 5,661 Direct 3,131 — (2,137) 475 958 2,427 Home equity 7,568 — (126) 84 (695) 6,831 Total $ 366,335 $ 2,803 $ (18,965) $ 1,491 $ 29,176 $ 380,840 Three Months Ended September 30, 2023 Commercial $ 127,403 $ — $ (16,705) $ 1,616 $ 12,441 $ 124,755 Commercial real estate 136,897 — (2,291) 102 10,267 144,975 BBCC 2,776 — (1,049) 70 912 2,709 Residential real estate 20,421 — (15) 28 346 20,780 Indirect 1,407 — (490) 325 79 1,321 Direct 4,755 — (2,180) 580 416 3,571 Home equity 6,896 — (20) 341 (1,346) 5,871 Total $ 300,555 $ — $ (22,750) $ 3,062 $ 23,115 $ 303,982 Nine Months Ended September 30, 2024 Commercial $ 118,333 $ 17,838 $ (25,098) $ 1,104 $ 24,665 $ 136,842 Commercial real estate 155,099 8,041 (12,541) 1,791 52,509 204,899 BBCC 2,887 — (1,687) 304 1,188 2,692 Residential real estate 20,837 134 — 845 (328) 21,488 Indirect 1,236 — (3,937) 957 7,405 5,661 Direct 3,169 59 (6,449) 1,527 4,121 2,427 Home equity 6,049 653 (314) 229 214 6,831 Total $ 307,610 $ 26,725 $ (50,026) $ 6,757 $ 89,774 $ 380,840 Nine Months Ended September 30, 2023 Commercial $ 120,612 $ — $ (37,459) $ 3,713 $ 37,889 $ 124,755 Commercial real estate 138,244 — (5,938) 1,394 11,275 144,975 BBCC 2,431 — (1,171) 174 1,275 2,709 Residential real estate 21,916 — (256) 153 (1,033) 20,780 Indirect 1,532 — (2,089) 1,349 529 1,321 Direct 12,116 — (8,018) 1,798 (2,325) 3,571 Home equity 6,820 — (330) 471 (1,090) 5,871 Total $ 303,671 $ — $ (55,261) $ 9,052 $ 46,520 $ 303,982 The allowance for credit losses on loans at September 30, 2024 included $26.7 million of allowance for credit losses on acquired PCD loans established through acquisition accounting adjustments on or after the CapStar acquisition date. In addition, the provision for credit losses on loans in the nine months ended September 30, 2024 included $15.3 million to establish an allowance for credit losses on non-PCD loans acquired in the CapStar transaction. Accrued interest receivable on loans is excluded from the estimate of credit losses and totaled $174.8 million at September 30, 2024, compared to $169.8 million at December 31, 2023. 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 Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Allowance for credit losses on unfunded loan commitments: Balance at beginning of period $ 25,733 $ 37,007 $ 31,226 $ 32,188 Provision for credit losses on unfunded loan commitments — — 1,763 — Provision (release) for credit losses on unfunded loan (679) (4,047) (7,935) 772 Balance at end of period $ 25,054 $ 32,960 $ 25,054 $ 32,960 Credit Quality Old National’s management monitors the credit quality of its loans on an ongoing basis with the AQR for commercial, commercial real estate, and BBCC 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: Special Mention . Loans categorized as special mention 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 special mention, 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: (dollars in thousands) Origination Year Revolving to Term 2024 2023 2022 2021 2020 Prior Revolving Total September 30, 2024 Commercial: Pass $ 1,555,665 $ 1,519,627 $ 1,243,415 $ 734,457 $ 467,036 $ 636,137 $ 2,560,086 $ 657,716 $ 9,374,139 Special Mention 34,491 62,344 43,253 14,913 18,003 12,073 120,436 25,235 330,748 Classified: Substandard 11,204 63,668 97,872 32,674 21,667 26,861 89,643 29,742 373,331 Nonaccrual 352 812 2,723 792 637 2,354 242 4,813 12,725 Doubtful 1,460 11,485 25,610 7,640 5,726 1,226 22,294 16,979 92,420 Total $ 1,603,172 $ 1,657,936 $ 1,412,873 $ 790,476 $ 513,069 $ 678,651 $ 2,792,701 $ 734,485 $ 10,183,363 Commercial real estate: Pass $ 1,649,355 $ 2,584,786 $ 3,882,068 $ 2,267,541 $ 1,407,050 $ 1,877,393 $ 143,314 $ 929,671 $ 14,741,178 Special Mention 47,435 35,196 105,531 126,457 49,338 68,825 4,492 56,651 493,925 Classified: Substandard 62,087 37,197 244,297 62,366 39,810 172,429 1,018 79,285 698,489 Nonaccrual 421 708 4,267 2,881 2,763 15,942 — 361 27,343 Doubtful 7,335 5,675 4,858 53,679 25,556 75,276 — 47,274 219,653 Total $ 1,766,633 $ 2,663,562 $ 4,241,021 $ 2,512,924 $ 1,524,517 $ 2,209,865 $ 148,824 $ 1,113,242 $ 16,180,588 BBCC: Pass $ 60,158 $ 83,681 $ 58,701 $ 36,774 $ 31,632 $ 30,934 $ 61,932 $ 16,809 $ 380,621 Special Mention 392 2,740 1,034 720 723 369 3,818 3,074 12,870 Classified: Substandard 105 499 145 200 30 226 694 523 2,422 Nonaccrual — 262 434 347 67 1,010 — 642 2,762 Doubtful — 231 642 301 15 1 — 495 1,685 Total $ 60,655 $ 87,413 $ 60,956 $ 38,342 $ 32,467 $ 32,540 $ 66,444 $ 21,543 $ 400,360 Origination Year Revolving to Term 2023 2022 2021 2020 2019 Prior Revolving Total December 31, 2023 Commercial: Pass $ 1,826,289 $ 1,573,669 $ 985,964 $ 520,883 $ 450,911 $ 495,979 $ 2,051,985 $ 651,953 $ 8,557,633 Special Mention 20,038 90,031 19,953 36,906 25,756 47,357 89,765 44,348 374,154 Classified: Substandard 27,271 41,164 27,990 37,618 10,461 29,981 72,703 56,716 303,904 Nonaccrual 32 7,034 — — 823 3,411 — 5,461 16,761 Doubtful — 7,261 5,925 4,875 1,742 7,211 — — 27,014 Total $ 1,873,630 $ 1,719,159 $ 1,039,832 $ 600,282 $ 489,693 $ 583,939 $ 2,214,453 $ 758,478 $ 9,279,466 Commercial real estate: Pass $ 2,177,841 $ 3,515,702 $ 2,563,638 $ 1,576,044 $ 1,010,351 $ 1,161,119 $ 103,332 $ 960,386 $ 13,068,413 Special Mention 69,648 69,946 68,708 27,059 52,107 95,896 3,893 64,730 451,987 Classified: Substandard 26,638 56,423 21,401 28,983 61,186 49,558 — 48,760 292,949 Nonaccrual — 21,919 10,706 1,975 1,634 8,632 — 1,400 46,266 Doubtful 5,360 429 30,897 2,306 37,777 35,187 — — 111,956 Total $ 2,279,487 $ 3,664,419 $ 2,695,350 $ 1,636,367 $ 1,163,055 $ 1,350,392 $ 107,225 $ 1,075,276 $ 13,971,571 BBCC: Pass $ 81,102 $ 64,583 $ 44,307 $ 38,086 $ 27,557 $ 19,028 $ 68,807 $ 33,361 $ 376,831 Special Mention — — 857 700 1,001 349 2,144 12,728 17,779 Classified: Substandard 436 193 252 — — 604 15 1,006 2,506 Nonaccrual — — 482 — 4 1,105 — 1,402 2,993 Doubtful 302 727 254 286 60 84 — — 1,713 Total $ 81,840 $ 65,503 $ 46,152 $ 39,072 $ 28,622 $ 21,170 $ 70,966 $ 48,497 $ 401,822 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) 2024 2023 2022 2021 2020 Prior Revolving Total September 30, 2024 Residential real estate: Risk Rating: Performing $ 371,299 $ 488,590 $ 1,469,840 $ 1,696,514 $ 1,605,901 $ 1,067,863 $ 60 $ 277 $ 6,700,344 Nonperforming 157 4,145 10,655 5,381 4,283 32,931 — — 57,552 Total $ 371,456 $ 492,735 $ 1,480,495 $ 1,701,895 $ 1,610,184 $ 1,100,794 $ 60 $ 277 $ 6,757,896 Indirect: Risk Rating: Performing $ 348,367 $ 309,592 $ 257,064 $ 107,785 $ 47,552 $ 20,760 $ — $ — $ 1,091,120 Nonperforming 302 1,109 1,575 1,387 413 328 — — 5,114 Total $ 348,669 $ 310,701 $ 258,639 $ 109,172 $ 47,965 $ 21,088 $ — $ — $ 1,096,234 Direct: Risk Rating: Performing $ 56,302 $ 68,103 $ 58,794 $ 53,593 $ 21,871 $ 56,853 $ 97,352 $ 2,509 $ 415,377 Nonperforming 66 307 674 390 593 1,706 2 86 3,824 Total $ 56,368 $ 68,410 $ 59,468 $ 53,983 $ 22,464 $ 58,559 $ 97,354 $ 2,595 $ 419,201 Home equity: Risk Rating: Performing $ — $ — $ 262 $ 203 $ 1,135 $ 11,759 $ 1,300,266 $ 28,857 $ 1,342,482 Nonperforming — — 1,311 146 244 5,383 3,212 10,223 20,519 Total $ — $ — $ 1,573 $ 349 $ 1,379 $ 17,142 $ 1,303,478 $ 39,080 $ 1,363,001 Origination Year Revolving to Term 2023 2022 2021 2020 2019 Prior Revolving Total December 31, 2023 Residential real estate: Risk Rating: Performing $ 453,743 $ 1,508,671 $ 1,836,078 $ 1,705,131 $ 430,783 $ 722,987 $ — $ 279 $ 6,657,672 Nonperforming 116 4,563 4,004 3,375 4,078 25,635 — — 41,771 Total $ 453,859 $ 1,513,234 $ 1,840,082 $ 1,708,506 $ 434,861 $ 748,622 $ — $ 279 $ 6,699,443 Indirect: Risk Rating: Performing $ 393,369 $ 355,822 $ 162,735 $ 82,871 $ 37,967 $ 13,815 $ — $ 196 $ 1,046,775 Nonperforming 372 1,472 1,207 547 318 291 — — 4,207 Total $ 393,741 $ 357,294 $ 163,942 $ 83,418 $ 38,285 $ 14,106 $ — $ 196 $ 1,050,982 Direct: Risk Rating: Performing $ 109,372 $ 90,310 $ 92,491 $ 48,387 $ 29,659 $ 67,129 $ 75,080 $ 4,852 $ 517,280 Nonperforming 67 531 517 560 210 3,872 124 11 5,892 Total $ 109,439 $ 90,841 $ 93,008 $ 48,947 $ 29,869 $ 71,001 $ 75,204 $ 4,863 $ 523,172 Home equity: Risk Rating: Performing $ 290 $ 164 $ 160 $ 140 $ 679 $ 4,483 $ 1,019,389 $ 23,918 $ 1,049,223 Nonperforming — 310 328 404 741 4,327 2,844 7,294 16,248 Total $ 290 $ 474 $ 488 $ 544 $ 1,420 $ 8,810 $ 1,022,233 $ 31,212 $ 1,065,471 The following table summarizes the gross charge-offs of loans by loan portfolio segment and origination year: Origination Year (dollars in thousands) 2024 2023 2022 2021 2020 Prior Revolving Total Three Months Ended September 30, 2024 Commercial $ 1,234 $ 8,031 $ 633 $ 297 $ 840 $ 55 $ 422 $ 11,512 Commercial real estate — 140 61 44 — 2,554 — 2,799 BBCC — 481 164 21 — 10 — 676 Residential real estate — — — — — — — — Indirect 199 797 360 110 41 208 — 1,715 Direct 8 97 398 475 224 214 721 2,137 Home equity — — — — — 126 — 126 Total gross charge-offs $ 1,441 $ 9,546 $ 1,616 $ 947 $ 1,105 $ 3,167 $ 1,143 $ 18,965 Origination Year 2023 2022 2021 2020 2019 Prior Revolving Total Three Months Ended September 30, 2023 Commercial $ — $ 4,154 $ 12,271 $ — $ — $ 63 $ 217 $ 16,705 Commercial real estate — — — 1,744 — 547 — 2,291 BBCC 499 501 49 — — — — 1,049 Residential real estate — — — — — 15 — 15 Indirect 75 276 86 12 10 31 — 490 Direct 19 429 423 112 270 60 867 2,180 Home equity — — — — — 20 — 20 Total gross charge-offs $ 593 $ 5,360 $ 12,829 $ 1,868 $ 280 $ 736 $ 1,084 $ 22,750 Origination Year 2024 2023 2022 2021 2020 Prior Revolving Total Nine Months Ended September 30, 2024 Commercial $ 1,234 $ 10,389 $ 10,263 $ 719 $ 891 $ 625 $ 977 $ 25,098 Commercial real estate — 140 84 2,688 — 9,629 — 12,541 BBCC — 1,086 393 56 112 40 — 1,687 Residential real estate — — — — — — — — Indirect 253 1,698 1,209 431 80 266 — 3,937 Direct 83 292 1,368 1,351 510 609 2,236 6,449 Home equity — — — 34 — 280 — 314 Total gross charge-offs $ 1,570 $ 13,605 $ 13,317 $ 5,279 $ 1,593 $ 11,449 $ 3,213 $ 50,026 Origination Year 2023 2022 2021 2020 2019 Prior Revolving Total Nine Months Ended September 30, 2023 Commercial $ — $ 6,254 $ 23,432 $ 120 $ 6,789 $ 302 $ 562 $ 37,459 Commercial real estate — 54 735 2,144 — 3,005 — 5,938 BBCC 499 548 77 47 — — — 1,171 Residential real estate — — — — — 256 — 256 Indirect 85 954 640 153 137 120 — 2,089 Direct 19 1,330 1,805 570 1,011 450 2,833 8,018 Home equity — — — — — 330 — 330 Total gross charge-offs $ 603 $ 9,140 $ 26,689 $ 3,034 $ 7,937 $ 4,463 $ 3,395 $ 55,261 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 September 30, 2024 Commercial $ 11,690 $ 6,213 $ 35,974 $ 53,877 $ 10,129,486 $ 10,183,363 Commercial real estate 20,125 38,395 39,891 98,411 16,082,177 16,180,588 BBCC 1,095 — 1,361 2,456 397,904 400,360 Residential 5,817 740 2,489 9,046 6,748,850 6,757,896 Indirect 7,702 2,088 1,298 11,088 1,085,146 1,096,234 Direct 2,172 1,029 1,460 4,661 414,540 419,201 Home equity 5,339 3,791 7,187 16,317 1,346,684 1,363,001 Total $ 53,940 $ 52,256 $ 89,660 $ 195,856 $ 36,204,787 $ 36,400,643 December 31, 2023 Commercial $ 16,128 $ 1,332 $ 4,861 $ 22,321 $ 9,257,145 $ 9,279,466 Commercial real estate 9,081 5,254 30,660 44,995 13,926,576 13,971,571 BBCC 1,368 134 977 2,479 399,343 401,822 Residential 12,358 367 15,249 27,974 6,671,469 6,699,443 Indirect 7,025 1,854 1,342 10,221 1,040,761 1,050,982 Direct 5,436 1,455 1,787 8,678 514,494 523,172 Home equity 7,791 2,347 6,659 16,797 1,048,674 1,065,471 Total $ 59,187 $ 12,743 $ 61,535 $ 133,465 $ 32,858,462 $ 32,991,927 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: September 30, 2024 December 31, 2023 (dollars in thousands) Nonaccrual Nonaccrual Past Due Nonaccrual Nonaccrual Past Due Commercial $ 105,145 $ 32,436 $ 477 $ 43,775 $ 13,143 $ 242 Commercial real estate 246,996 40,356 90 158,222 24,507 585 BBCC 4,447 — 80 4,706 — 95 Residential 57,552 — — 41,771 — — Indirect 5,114 — 160 4,207 — 8 Direct 3,824 — 25 5,892 — 31 Home equity 20,519 — 345 16,248 — — Total $ 443,597 $ 72,792 $ 1,177 $ 274,821 $ 37,650 $ 961 Interest income recognized on nonaccrual loans was insignificant during the three and nine months ended September 30, 2024 and 2023. 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 September 30, 2024 Commercial $ 18,944 $ 64,073 $ 4,481 $ 8,971 $ 4,258 Commercial real estate 240,163 1,552 2,106 — 120 BBCC 3,185 842 97 323 — Residential 57,552 — — — — Indirect — — — 5,114 — Direct 2,891 40 5 383 26 Home equity 20,519 — — — — Total loans $ 343,254 $ 66,507 $ 6,689 $ 14,791 $ 4,404 December 31, 2023 Commercial $ 14,303 $ 24,729 $ 2,577 $ 280 $ 328 Commercial real estate 146,425 — 1,167 — 6,107 BBCC 3,522 794 — 390 — Residential 41,771 — — — — Indirect — — — 4,207 — Direct 4,727 1 3 366 29 Home equity 16,248 — — — — Total loans $ 226,996 $ 25,524 $ 3,747 $ 5,243 $ 6,464 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 forgiven is charged-off against the allowance for credit losses on loans. The following table presents the amortized cost basis of financial difficulty modifications that were modified for borrowers experiencing financial difficulty, by class of loans and type of modification: (dollars in thousands) Term Payment Total Three Months Ended September 30, 2024 Commercial $ 17,969 $ 4,776 0.2 % Commercial real estate 11,121 2,554 0.1 % Total $ 29,090 $ 7,330 0.1 % Three Months Ended September 30, 2023 Commercial $ 3,502 $ — 0.0 % Commercial real estate 93,844 — 0.7 % Total $ 97,346 $ — 0.3 % Nine Months Ended September 30, 2024 Commercial $ 27,085 $ 4,776 0.3 % Commercial real estate 56,051 2,554 0.4 % Total $ 83,136 $ 7,330 0.2 % Nine Months Ended September 30, 2023 Commercial $ 20,811 $ — 0.2 % Commercial real estate 116,580 $ — 0.8 % Total $ 137,391 $ — 0.4 % Old National closely monitors the performance of financial difficulty modifications to understand the effectiveness of its efforts. The following table presents the performance of financial difficulty modifications in the twelve months following modification: (dollars in thousands) 30-59 Days 60-89 Days Past Due Total Current Total September 30, 2024 Commercial $ — $ — $ 3,854 $ 3,854 $ 31,861 $ 35,715 Commercial real estate 5,707 3,726 21,463 30,896 67,421 98,317 Total $ 5,707 $ 3,726 $ 25,317 $ 34,750 $ 99,282 $ 134,032 September 30, 2023 Commercial $ — $ — $ 2,541 $ 2,541 $ 18,270 $ 20,811 Commercial real estate 1,086 — — 1,086 115,494 116,580 Total $ 1,086 $ — $ 2,541 $ 3,627 $ 133,764 $ 137,391 The following table summarizes the nature of the financial difficulty modifications by class of loans: (dollars in thousands) Weighted- Weighted- Three Months Ended September 30, 2024 Commercial 4.4 6.0 Commercial real estate 6.5 7.0 Total 5.2 6.4 Three Months Ended September 30, 2023 Commercial 7.3 — Commercial real estate 9.2 — Total 9.2 — Nine Months Ended September 30, 2024 Commercial 6.8 6.0 Commercial real estate 8.8 7.0 Total 8.2 6.4 Nine Months Ended September 30, 2023 Commercial 5.7 — Commercial real estate 8.9 — Total 8.4 — There were payment defaults on $3.9 million and $25.3 million of loans during the three and nine months ended September 30, 2024, respectively, to borrowers whose loans were modified due to financial difficulties within the previous twelve months. The payment defaults did not materially impact the allowance for credit losses on loans. There were no payment defaults during the three and nine months ended September 30, 2023 on loans that had been modified within the previous twelve months. Old National had not committed to lend any material additional funds to the borrowers whose loans were modified due to financial difficulties at September 30, 2024 or December 31, 2023. Purchased Credit Deteriorated Loans Old National has purchased loans, for which there was, at acquisition, evidence of more than insignificant deterioration of credit quality since origination. The carrying amount of those loans is as follows: (dollars in thousands) CapStar (1) Purchase price of loans at acquisition $ 610,691 Allowance for credit losses at acquisition 26,725 Non-credit discount/(premium) at acquisition 41,886 Par value of acquired loans at acquisition $ 679,302 (1) Old National acquired Cap

Leases

Leases	9 Months Ended
	Sep. 30, 2024
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 Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Operating lease cost Occupancy/Equipment expense $ 8,258 $ 7,462 $ 24,352 $ 23,569 Finance lease cost: Amortization of right-of-use assets Occupancy expense 2,188 742 4,427 2,170 Interest on lease liabilities Interest expense 318 183 752 536 Sub-lease income Occupancy expense (110) (119) (358) (281) Total $ 10,654 $ 8,268 $ 29,173 $ 25,994 Supplemental balance sheet information related to leases was as follows: (dollars in thousands) September 30, December 31, Operating Leases Operating lease right-of-use assets $ 188,533 $ 185,506 Operating lease liabilities 206,863 204,960 Finance Leases Premises and equipment, net 32,096 19,820 Other borrowings 33,598 20,955 Weighted-Average Remaining Lease Term (in Years) Operating leases 8.0 8.5 Finance leases 7.0 10.5 Weighted-Average Discount Rate Operating leases 3.13 % 3.04 % Finance leases 3.98 % 3.90 % Supplemental cash flow information related to leases was as follows: Nine Months Ended (dollars in thousands) 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 24,849 $ 23,766 Operating cash flows from finance leases 752 536 Financing cash flows from finance leases 4,061 1,893 The following table presents a maturity analysis of the Company’s lease liability by lease classification at September 30, 2024: (dollars in thousands) Operating Finance 2024 $ 8,418 $ 2,432 2025 34,407 9,215 2026 33,720 6,477 2027 31,985 4,816 2028 28,028 3,210 Thereafter 98,614 12,612 Total undiscounted lease payments 235,172 38,762 Amounts representing interest (28,309) (5,164) Lease liability $ 206,863 $ 33,598
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 Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Operating lease cost Occupancy/Equipment expense $ 8,258 $ 7,462 $ 24,352 $ 23,569 Finance lease cost: Amortization of right-of-use assets Occupancy expense 2,188 742 4,427 2,170 Interest on lease liabilities Interest expense 318 183 752 536 Sub-lease income Occupancy expense (110) (119) (358) (281) Total $ 10,654 $ 8,268 $ 29,173 $ 25,994 Supplemental balance sheet information related to leases was as follows: (dollars in thousands) September 30, December 31, Operating Leases Operating lease right-of-use assets $ 188,533 $ 185,506 Operating lease liabilities 206,863 204,960 Finance Leases Premises and equipment, net 32,096 19,820 Other borrowings 33,598 20,955 Weighted-Average Remaining Lease Term (in Years) Operating leases 8.0 8.5 Finance leases 7.0 10.5 Weighted-Average Discount Rate Operating leases 3.13 % 3.04 % Finance leases 3.98 % 3.90 % Supplemental cash flow information related to leases was as follows: Nine Months Ended (dollars in thousands) 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 24,849 $ 23,766 Operating cash flows from finance leases 752 536 Financing cash flows from finance leases 4,061 1,893 The following table presents a maturity analysis of the Company’s lease liability by lease classification at September 30, 2024: (dollars in thousands) Operating Finance 2024 $ 8,418 $ 2,432 2025 34,407 9,215 2026 33,720 6,477 2027 31,985 4,816 2028 28,028 3,210 Thereafter 98,614 12,612 Total undiscounted lease payments 235,172 38,762 Amounts representing interest (28,309) (5,164) Lease liability $ 206,863 $ 33,598

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2024
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 Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Balance at beginning of period $ 2,170,709 $ 1,998,716 $ 1,998,716 $ 1,998,716 Acquisitions and adjustments 6,290 — 178,283 — Balance at end of period $ 2,176,999 $ 1,998,716 $ 2,176,999 $ 1,998,716 During the nine months ended September 30, 2024, Old National recorded $178.3 million of goodwill associated with the acquisition of CapStar. The increase in goodwill for the three months ended September 30, 2024 resulted from the measurement period adjustments related to updating the fair values of the assets acquired and liabilities assumed in the acquisition of CapStar. See Note 2 to the consolidated financial statements for additional detail regarding this transaction. Old National performed the required annual goodwill impairment test as of August 31, 2024 and there was no impairment. No events or circumstances since the August 31, 2024 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 September 30, 2024 Core deposit $ 189,636 $ (89,825) $ 99,811 Customer trust relationships 52,621 (24,347) 28,274 Total other intangible assets $ 242,257 $ (114,172) $ 128,085 December 31, 2023 Core deposit $ 143,511 $ (72,940) $ 70,571 Customer trust relationships 52,621 (20,942) 31,679 Total other intangible assets $ 196,132 $ (93,882) $ 102,250 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. During the nine months ended September 30, 2024, Old National recorded $46.1 million of core deposit intangibles associated with the acquisition of CapStar. See Note 2 to the consolidated financial statements for additional detail regarding this transaction. 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 nine months ended September 30, 2024 or 2023. Total amortization expense associated with intangible assets was $7.4 million and $20.3 million for the three and nine months ended September 30, 2024, respectively, compared to $6.0 million and $18.3 million for the three and nine months ended September 30, 2023, respectively. Estimated amortization expense for future years is as follows: (dollars in thousands) 2024 remaining $ 7,238 2025 26,116 2026 22,474 2027 18,947 2028 15,598 Thereafter 37,712 Total $ 128,085

Qualified Affordable Housing Pr

Qualified Affordable Housing Projects and Other Tax Credit Investments	9 Months Ended
	Sep. 30, 2024
Securities Sold under Agreements to Repurchase [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 September 30, 2024, 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) September 30, 2024 December 31, 2023 Investment Accounting Method Investment Unfunded Commitment (1) Investment Unfunded LIHTC Proportional amortization $ 202,128 $ 122,826 $ 114,991 $ 75,981 FHTC Proportional amortization (2) 31,459 25,535 34,220 27,421 NMTC Consolidation 54,063 — 47,727 — Renewable Energy Equity 4 — 201 — Total $ 287,654 $ 148,361 $ 197,139 $ 103,402 (1) All commitments will be paid by Old National by December 31, 2035. (2) Old National’s FHTC investments were previously accounted for under the Equity method of accounting prior to the adoption of ASU 2023-02 on January 1, 2024. 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 September 30, 2024 LIHTC $ 2,777 $ (3,739) FHTC 738 (690) NMTC 3,076 (3,825) Renewable Energy — — Total $ 6,591 $ (8,254) Three Months Ended September 30, 2023 LIHTC $ 3,208 $ (3,582) FHTC 330 (399) NMTC 2,092 (2,611) Renewable Energy 222 — Total $ 5,852 $ (6,592) Nine Months Ended September 30, 2024 LIHTC $ 8,042 $ (10,813) FHTC 2,000 (2,043) NMTC 8,168 (10,175) Renewable Energy 197 — Total $ 18,407 $ (23,031) Nine Months Ended September 30, 2023 LIHTC $ 6,135 $ (7,398) FHTC 1,178 (1,423) NMTC 6,275 (7,833) Renewable Energy 714 — Total $ 14,302 $ (16,654) (1) The amortization expense for the LIHTC and FHTC investments is included in our income tax expense. Prior to the adoption of ASU 2023-02 on January 1, 2024, FHTC amortization expense was included in noninterest expense. NMTC amortization is recognized in noninterest expense in correlation to the recognition of tax credits on our tax return. Amortization expense for the 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 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	9 Months Ended
	Sep. 30, 2024
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 Nine Months Ended September 30, (dollars in thousands) 2024 2023 Outstanding at period end $ 244,626 $ 279,061 Average amount outstanding during the period 261,818 351,362 Maximum amount outstanding at any month-end during the period 319,423 430,537 Weighted-average interest rate: During the period 1.11 % 0.91 % At period end 1.09 % 1.35 % At December 31, 2023, securities sold under agreements to repurchase totaled $285.2 million with a weighted-average interest rate of 3.64%. The following table presents the contractual maturity of our secured borrowings and class of collateral pledged: At September 30, 2024 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 $ 244,626 $ — $ — $ — $ 244,626 Total $ 244,626 $ — $ — $ — $ 244,626

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	9 Months Ended
	Sep. 30, 2024
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) September 30, December 31, FHLB advances (fixed rates 2.19% to 5.23% and variable rates 4.71% to 5.24%) maturing October 2024 to March 2044 $ 4,475,528 $ 4,300,528 Fair value hedge basis adjustments and unamortized (4,375) (19,847) Total $ 4,471,153 $ 4,280,681 FHLB advances had weighted-average rates of 3.64% at September 30, 2024 and 3.45% at December 31, 2023. FHLB advances are collateralized by designated assets that may include qualifying commercial real estate loans, residential and multifamily mortgages, home equity loans, and certain investment securities. At September 30, 2024, total unamortized prepayment fees related to all FHLB advance debt modifications completed in prior years totaled $9.7 million, compared to $14.2 million at December 31, 2023. Contractual maturities of FHLB advances at September 30, 2024 were as follows: (dollars in thousands) Due in 2024 $ 150,243 Due in 2025 550,285 Due in 2026 100,000 Due in 2028 650,000 Thereafter 3,025,000 Fair value hedge basis adjustments and unamortized prepayment fees (4,375) Total $ 4,471,153

Other Borrowings

Other Borrowings	9 Months Ended
	Sep. 30, 2024
Other Liabilities Disclosure [Abstract]
Other Borrowings	OTHER BORROWINGS The following table summarizes Old National’s other borrowings: (dollars in thousands) September 30, December 31, Old National Bancorp: Subordinated debentures (fixed rate 5.88%) maturing September 2026 $ 150,000 $ 150,000 Subordinated debentures (fixed rate 5.25%) maturing June 2030 30,000 — Junior subordinated debentures (rates of 6.42% to 9.09%) maturing July 2031 to September 2037 136,643 136,643 Senior unsecured notes (fixed rate 4.13%) matured August 2024 — 175,000 Unamortized debt issuance costs related to senior unsecured notes — (91) Other basis adjustments 14,338 18,207 Old National Bank: Finance lease liabilities 33,598 20,955 Subordinated debentures (3-month SOFR plus 4.618%; variable rate 9.87%) 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 186,020 154,284 Other (1) 35,455 97,872 Total other borrowings $ 598,054 $ 764,870 (1) Includes overnight borrowings to collateralize certain derivative positions totaling $35.4 million at September 30, 2024 and $97.6 million at December 31, 2023. Contractual maturities of other borrowings at September 30, 2024 were as follows: (dollars in thousands) Due in 2024 $ 37,482 Due in 2025 20,165 Due in 2026 155,677 Due in 2027 4,207 Due in 2028 2,730 Thereafter 363,359 Unamortized debt issuance costs and other basis adjustments 14,434 Total $ 598,054 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 September 30, 2024: (dollars in thousands) Rate at September 30, Name of Trust Issuance Date Issuance Rate Maturity Date Bridgeview Statutory Trust I July 2001 $ 15,464 3-month SOFR plus 3.58% 9.09% July 31, 2031 Bridgeview Capital Trust II December 2002 15,464 3-month SOFR plus 3.35% 8.91% 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 SOFR plus 1.75% 6.95% March 17, 2035 Northern States Statutory Trust I September 2005 10,310 3-month SOFR plus 1.80% 7.01% September 15, 2035 Anchor Capital Trust III August 2005 5,000 3-month SOFR plus 1.55% 6.42% September 30, 2035 Great Lakes Statutory Trust II December 2005 6,186 3-month SOFR plus 1.40% 6.61% December 15, 2035 Home Federal Statutory September 2006 15,464 3-month SOFR plus 1.65% 6.86% September 15, 2036 Monroe Bancorp Capital July 2006 3,093 3-month SOFR plus 1.60% 7.16% October 7, 2036 Tower Capital Trust 3 December 2006 9,279 3-month SOFR plus 1.69% 6.97% March 1, 2037 Monroe Bancorp Statutory March 2007 5,155 3-month SOFR plus 1.60% 6.81% June 15, 2037 Great Lakes Statutory Trust III June 2007 8,248 3-month SOFR plus 1.70% 6.91% September 15, 2037 Total $ 136,643 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 $33.6 million at September 30, 2024. 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)	9 Months Ended
	Sep. 30, 2024
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 September 30, 2024 Balance at beginning of period $ (699,318) $ (88,986) $ (3,104) $ — $ (791,408) Other comprehensive income (loss) before 162,861 — 17,537 — 180,398 Amounts reclassified from AOCI to income (1) 57 3,537 3,660 — 7,254 Balance at end of period $ (536,400) $ (85,449) $ 18,093 $ — $ (603,756) Three Months Ended September 30, 2023 Balance at beginning of period $ (701,393) $ (103,144) $ (4,096) $ — $ (808,633) Other comprehensive income (loss) before (156,660) — (11,546) — (168,206) Amounts reclassified from AOCI to income (1) 178 4,193 3,653 — 8,024 Balance at end of period $ (857,875) $ (98,951) $ (11,989) $ — $ (968,815) Nine Months Ended September 30, 2024 Balance at beginning of period $ (652,518) $ (95,472) $ 9,181 $ — $ (738,809) Other comprehensive income (loss) before 116,051 — (1,883) — 114,168 Amounts reclassified from AOCI to income (1) 67 10,023 10,795 — 20,885 Balance at end of period $ (536,400) $ (85,449) $ 18,093 $ — $ (603,756) Nine Months Ended September 30, 2023 Balance at beginning of period $ (642,346) $ (112,664) $ (31,549) $ 137 $ (786,422) Other comprehensive income (loss) before (219,562) 1,325 34,279 — (183,958) Amounts reclassified from AOCI to income (1) 4,033 12,388 (14,719) (137) 1,565 Balance at end of period $ (857,875) $ (98,951) $ (11,989) $ — $ (968,815) (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 September 30, 2024 and 2023: Three Months Ended (dollars in thousands) 2024 2023 Details about AOCI Components Amount Reclassified Affected Line Item in the Unrealized gains and losses on $ (76) $ (241) Debt securities gains (losses), net 19 63 Income tax (expense) benefit $ (57) $ (178) Net income Amortization of unrealized losses on $ (4,740) $ (5,623) Interest income (expense) 1,203 1,430 Income tax (expense) benefit $ (3,537) $ (4,193) Net income Gains and losses on hedges $ (4,936) $ (4,927) Interest income (expense) 1,276 1,274 Income tax (expense) benefit $ (3,660) $ (3,653) Net income Total reclassifications for the period $ (7,254) $ (8,024) Net income The following table summarizes the amounts reclassified out of each component of AOCI for the nine months ended September 30, 2024 and 2023: Nine Months Ended (dollars in thousands) 2024 2023 Details about AOCI Components Amount Reclassified Affected Line Item in the Unrealized gains and losses on $ (90) $ (5,440) Debt securities gains (losses), net 23 1,407 Income tax (expense) benefit $ (67) $ (4,033) Net income Amortization of unrealized losses on $ (13,434) $ (16,574) Interest income (expense) 3,411 4,186 Income tax (expense) benefit $ (10,023) $ (12,388) Net income Gains and losses on hedges $ (14,560) $ 19,893 Interest income (expense) 3,765 (5,174) Income tax (expense) benefit $ (10,795) $ 14,719 Net income Amortization of defined benefit Actuarial gains (losses) $ — $ 182 Salaries and employee benefits — (45) Income tax (expense) benefit $ — $ 137 Net income Total reclassifications for the period $ (20,885) $ (1,565) Net income

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The 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 Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Provision at statutory rate of 21% $ 38,867 $ 40,358 $ 103,810 $ 122,352 Tax-exempt income: Tax-exempt interest (4,871) (4,625) (14,856) (13,716) Section 291/265 interest disallowance 927 675 2,768 1,593 Company-owned life insurance income (1,089) (743) (2,961) (2,315) Tax-exempt income (5,033) (4,693) (15,049) (14,438) State income taxes 7,485 8,163 18,965 24,856 Interim period effective rate adjustment 1,096 116 1,969 (607) Tax credit investments - federal (3,619) (2,071) (9,780) (7,122) Officer compensation limitation 765 1,040 3,021 3,120 Non-deductible FDIC premiums 2,462 1,949 6,241 6,096 Other, net (743) (558) (159) (1,139) Income tax expense $ 41,280 $ 44,304 $ 109,018 $ 133,118 Effective tax rate 22.3 % 23.1 % 22.1 % 22.9 % Net Deferred Tax Assets Net deferred tax assets are included in other assets on the balance sheet. At September 30, 2024, net deferred tax assets totaled $401.8 million, compared to $423.3 million at December 31, 2023. No valuation allowance was required on the Company’s deferred tax assets at September 30, 2024 or December 31, 2023. The Company’s retained earnings at September 30, 2024 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. Old National has federal net operating loss carryforwards totaling $67.4 million at September 30, 2024 and $63.6 million at December 31, 2023. This federal net operating loss was acquired from the acquisition of Anchor BanCorp Wisconsin Inc. in 2016, First Midwest Bancorp, Inc. in 2022, and CapStar Financial Holdings, Inc. in 2024. If not used, the federal net operating loss carryforwards will begin expiring in 2032 and later. Old National has recorded state net operating loss carryforwards totaling $108.9 million at September 30, 2024 and $116.9 million at December 31, 2023. 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	9 Months Ended
	Sep. 30, 2024
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, 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 $150.0 million notional amount at both September 30, 2024 and December 31, 2023. Interest rate swaps, collars, and floors related to variable-rate commercial loan pools were designated as cash flow hedges totaling $1.8 billion notional amount at September 30, 2024 and $1.6 billion notional amount at December 31, 2023. 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 $1.1 billion notional amount at September 30, 2024 and $900.0 million notional amount at December 31, 2023. Interest rate swaps of certain available-for-sale investment securities were designated as fair value hedges totaling $998.1 million notional amount at both September 30, 2024 and December 31, 2023. 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: September 30, 2024 December 31, 2023 Fair Value Fair Value (dollars in thousands) Notional Assets (1) Liabilities (2) Notional Assets (1) Liabilities (2) Cash flow hedges Interest rate swaps, collars, and floors on loan $ 1,800,000 $ 18,627 $ 3,876 $ 1,600,000 $ 10,472 $ 6,014 Interest rate swaps on borrowings (3) 150,000 — — 150,000 — — Fair value hedges Interest rate swaps on investment securities (3) 998,107 — — 998,107 — — Interest rate swaps on borrowings (3) 1,100,000 7,690 — 900,000 — — Total $ 26,317 $ 3,876 $ 10,472 $ 6,014 (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. 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 September 30, 2024 Interest rate contracts Interest income/(expense) $ 24,495 Fixed-rate debt Interest income/(expense) $ (24,645) Interest rate contracts Interest income/(expense) (44,845) Fixed-rate Interest income/(expense) 45,167 Total $ (20,350) $ 20,522 Three Months Ended Interest rate contracts Interest income/(expense) $ (9,553) Fixed-rate debt Interest income/(expense) $ 9,566 Interest rate contracts Interest income/(expense) 45,537 Fixed-rate Interest income/(expense) (46,055) Total $ 35,984 $ (36,489) Nine Months Ended Interest rate contracts Interest income/(expense) $ 10,207 Fixed-rate debt Interest income/(expense) $ (10,246) Interest rate contracts Interest income/(expense) (16,161) Fixed-rate Interest income/(expense) 16,454 Total $ (5,954) $ 6,208 Nine Months Ended Interest rate contracts Interest income/(expense) $ (18,500) Fixed-rate debt Interest income/(expense) $ 18,303 Interest rate contracts Interest income/(expense) 7,268 Fixed-rate Interest income/(expense) (7,671) Total $ (11,232) $ 10,632 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) 2024 2023 2024 2023 Derivatives in Location of Gain or Gain (Loss) Gain (Loss) Interest rate contracts Interest income/(expense) $ 23,654 $ (15,574) $ (5,970) $ (5,960) Nine Months Ended Nine Months Ended 2024 2023 2024 2023 Derivatives in Location of Gain or Gain (Loss) Gain (Loss) Interest rate contracts Interest income/(expense) $ (2,540) $ 4,302 $ (17,661) $ 17,481 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 $6.1 million will be reclassified to interest income and $15.8 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 September 30, 2024, the notional amounts of the interest rate lock commitments were $110.6 million and forward commitments were $154.3 million. At December 31, 2023, the notional amounts of the interest rate lock commitments were $25.2 million and forward commitments were $39.5 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. The notional amounts of these customer derivative instruments and the offsetting counterparty derivative instruments were $6.2 billion at September 30, 2024 and $6.0 billion at December 31, 2023. These derivative contracts do not qualify for hedge accounting. These instruments include interest rate swaps 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: September 30, 2024 December 31, 2023 Fair Value Fair Value (dollars in thousands) Notional Assets (1) Liabilities (2) Notional Assets (1) Liabilities (2) Interest rate lock commitments $ 110,582 $ 483 $ — $ 25,151 $ 291 $ — Forward mortgage loan contracts 154,287 — 19 39,529 — 566 Customer interest rate swaps 6,246,316 60,609 147,190 5,954,216 33,182 228,750 Counterparty interest rate swaps (3) 6,246,316 76,075 60,896 5,954,216 121,969 33,346 Customer foreign currency contracts 7,221 74 24 12,455 320 59 Counterparty foreign currency contracts 7,130 28 37 12,308 68 181 Total $ 137,269 $ 208,166 $ 155,830 $ 262,902 (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. The effect of derivatives not designated as hedging instruments on the consolidated statements of income were as follows: Three Months Ended (dollars in thousands) 2024 2023 Derivatives Not Designated as Location of Gain or (Loss) Gain (Loss) Interest rate contracts (1) Other income/(expense) $ (89) $ 426 Mortgage contracts Mortgage banking revenue 114 391 Foreign currency contracts Other income/(expense) (27) (3) Total $ (2) $ 814 Nine Months Ended 2024 2023 Derivatives Not Designated as Location of Gain or (Loss) Gain (Loss) Interest rate contracts (1) Other income/(expense) $ 319 $ 1,125 Mortgage contracts Mortgage banking revenue 158 760 Foreign currency contracts Other income/(expense) (108) (16) Total $ 369 $ 1,869 (1) Includes the valuation differences between the customer and offsetting swaps. Fair Value of Offsetting Derivatives Certain derivative instruments are subject to master netting agreements with counterparties that provide rights of setoff. The Company records these transactions at their gross fair values and does not offset derivative assets and liabilities in the Consolidated Balance Sheet. The following table presents the fair value of the Company’s derivatives and offsetting positions: September 30, 2024 December 31, 2023 (dollars in thousands) Assets Liabilities Assets Liabilities Gross amounts recognized $ 163,586 $ 212,042 $ 166,302 $ 268,916 Less: amounts offset in the Consolidated Balance Sheet — — — — Net amount presented in the Consolidated Balance Sheet 163,586 212,042 166,302 268,916 Gross amounts not offset in the Consolidated Balance Sheet Offsetting derivative positions (64,772) (64,772) (39,360) (39,360) Cash collateral pledged — (35,589) — (97,840) Net credit exposure $ 98,814 $ 111,681 $ 126,942 $ 131,716

Commitments, Contingencies, and

Commitments, Contingencies, and Financial Guarantees	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies, and Financial Guarantees	COMMITMENTS, CONTINGENCIES, AND FINANCIAL GUARANTEES Litigation At September 30, 2024, 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 litigation 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) September 30, December 31, Unfunded loan commitments $ 8,822,027 $ 8,912,587 Standby letters of credit (1) 197,379 192,237 (1) Notional amount, which represents the maximum amount of future funding requirements. The carrying value was $1.7 million at September 30, 2024 and $1.3 million at December 31, 2023. At September 30, 2024, approximately 4% of the unfunded loan commitments had fixed rates, with the remainder having floating rates ranging from 0.00% to 21.99%. The allowance for unfunded loan commitments totaled $25.1 million at September 30, 2024 and $31.2 million at December 31, 2023. Old National is a party in risk participation transactions of interest rate swaps, which had total notional amounts of $696.7 million at September 30, 2024 and $557.8 million at December 31, 2023.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2024
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 SOFR 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 market quotes developed using observable 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 September 30, 2024 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Equity securities $ 89,249 $ 89,249 $ — $ — Investment securities available-for-sale: U.S. Treasury 210,278 210,278 — — U.S. government-sponsored entities and agencies 1,294,278 — 1,294,278 — Mortgage-backed securities - Agency 5,101,056 — 5,101,056 — States and political subdivisions 511,565 — 511,565 — Pooled trust preferred securities 11,157 — 11,157 — Other securities 304,106 — 304,106 — Loans held-for-sale 62,376 — 62,376 — Derivative assets 163,586 — 163,586 — Financial Liabilities Derivative liabilities 212,042 — 212,042 — Fair Value Measurements at December 31, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Equity securities $ 80,372 $ 80,372 $ — $ — Investment securities available-for-sale: U.S. Treasury 396,733 396,733 — — U.S. government-sponsored entities and agencies 1,231,264 — 1,231,264 — Mortgage-backed securities - Agency 4,216,560 — 4,216,560 — States and political subdivisions 535,260 — 535,260 — Pooled trust preferred securities 11,337 — 11,337 — Other securities 321,901 — 321,901 — Loans held-for-sale 32,006 — 32,006 — Derivative assets 166,302 — 166,302 — Financial Liabilities Derivative liabilities 268,916 — 268,916 — Non-Recurring Basis Assets measured at fair value at September 30, 2024 on a non-recurring basis are summarized below: Fair Value Measurements at September 30, 2024 Using (dollars in thousands) Carrying Quoted Prices in Significant Significant Collateral Dependent Loans: Commercial loans $ 32,051 $ — $ — $ 32,051 Commercial real estate loans 147,158 — — 147,158 Foreclosed Assets: Commercial 1,075 — — 1,075 Residential 244 — — 244 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 $228.8 million, with a valuation allowance of $49.6 million at September 30, 2024. Old National recorded provision expense associated with these loans totaling $19.4 million and $33.2 million for the three and nine months ended September 30, 2024, respectively, compared to $2.1 million and $21.9 million for the three and nine months ended September 30, 2023, 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 $1.3 million at September 30, 2024. There were write-downs on other real estate owned totaling $0.1 million and $0.5 million for the three and nine months ended September 30, 2024, respectively, compared to $26 thousand and $0.1 million for the three and nine months ended September 30, 2023, respectively. Assets measured at fair value at December 31, 2023 on a non-recurring basis are summarized below: Fair Value Measurements at December 31, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Collateral Dependent Loans: Commercial loans $ 11,017 $ — $ — $ 11,017 Commercial real estate loans 95,457 — — 95,457 Foreclosed Assets: Commercial real estate 1,669 — — 1,669 At December 31, 2023, commercial and commercial real estate loans that are deemed collateral dependent had a principal amount of $134.3 million, with a valuation allowance of $27.9 million. Net carrying amount of other real estate owned and other repossessed property totaled $1.7 million at December 31, 2023. 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) September 30, 2024 Collateral Dependent Loans Commercial loans $ 32,051 Discounted Discount for type of property, 9% - 50% (26%) cash flow age of appraisal, and current status Commercial real estate loans 147,158 Discounted Discount for type of property, 0% - 32% (15%) cash flow age of appraisal, and current status Foreclosed Assets Commercial real estate 1,075 Fair value of Discount for type of property, 28% - 56% (32%) collateral age of appraisal, and current status Residential (2) 244 Fair value of Discount for type of property, 24% collateral age of appraisal, and current status December 31, 2023 Collateral Dependent Loans Commercial loans $ 11,017 Discounted Discount for type of property, 5% - 37% (27%) cash flow age of appraisal, and current status Commercial real estate loans 95,457 Discounted Discount for type of property, 2% - 38% (16%) cash flow age of appraisal, and current status Foreclosed Assets Commercial real estate 1,669 Fair value of Discount for type of property, 4% - 8% (4%) collateral age of appraisal, and current status (1) Unobservable inputs were weighted by the relative fair value of the instruments. (2) There was only one foreclosed residential real estate property at September 30, 2024 with write-downs during the nine months ended September 30, 2024, so no range or weighted average is reported. 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 $0.7 million for three months ended September 30, 2024 and $1.5 million for the nine months ended September 30, 2024, compared to $0.4 million and $0.9 million for the three and nine months ended September 30, 2023, 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 Difference Contractual Principal September 30, 2024 Loans held-for-sale $ 62,376 $ 1,343 $ 61,033 December 31, 2023 Loans held-for-sale $ 32,006 $ 621 $ 31,385 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 September 30, 2024 Loans held-for-sale $ 809 $ 7 $ — $ 816 Three Months Ended September 30, 2023 Loans held-for-sale $ (327) $ 12 $ — $ (315) Nine Months Ended September 30, 2024 Loans held-for-sale $ 712 $ 13 $ (5) $ 720 Nine Months Ended September 30, 2023 Loans held-for-sale $ (151) $ 2 $ — $ (149) Financial Instruments Not Carried at Fair Value The carrying amounts and estimated fair values of financial instruments not carried at fair value were as follows: Fair Value Measurements at September 30, 2024 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Cash, due from banks, money market, $ 1,191,570 $ 1,191,570 $ — $ — Investment securities held-to-maturity: U.S. government-sponsored entities and agencies 831,160 — 700,473 — Mortgage-backed securities - Agency 984,770 — 854,316 — State and political subdivisions 1,153,413 — 1,049,266 — Loans, net: Commercial 10,269,767 — — 10,126,433 Commercial real estate 16,150,111 — — 15,781,629 Residential real estate 6,736,408 — — 6,170,208 Consumer credit 2,863,517 — — 2,888,346 Accrued interest receivable 225,624 1,161 49,628 174,835 Financial Liabilities Deposits: Noninterest-bearing demand deposits $ 9,429,285 $ 9,429,285 $ — $ — Checking, NOW, savings, and money market 24,260,467 24,260,467 — — Time deposits 7,155,994 — 7,112,642 — Federal funds purchased and interbank borrowings 135,263 135,263 — — Securities sold under agreements to repurchase 244,626 244,626 — — FHLB advances 4,471,153 — 4,502,601 — Other borrowings 598,054 — 599,539 — Accrued interest payable 65,836 — 65,836 — Standby letters of credit 1,727 — — 1,727 Off-Balance Sheet Financial Instruments Commitments to extend credit $ — $ — $ — $ 4,105 Fair Value Measurements at December 31, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Cash, due from banks, money market, $ 1,175,058 $ 1,175,058 $ — $ — Investment securities held-to-maturity: U.S. government-sponsored entities and agencies 825,953 — 671,126 — Mortgage-backed securities - Agency 1,029,131 — 881,994 — State and political subdivisions 1,158,409 — 1,048,068 — Loans, net: Commercial 9,392,267 — — 9,258,193 Commercial real estate 13,984,273 — — 13,640,868 Residential real estate 6,678,606 — — 5,579,999 Consumer credit 2,629,171 — — 2,555,121 Accrued interest receivable 225,159 859 54,465 169,835 Financial Liabilities Deposits: Noninterest-bearing demand deposits $ 9,664,247 $ 9,664,247 $ — $ — Checking, NOW, savings, and money market 21,991,789 21,991,789 — — Time deposits 5,579,144 — 5,552,538 — Federal funds purchased and interbank borrowings 390 390 — — Securities sold under agreements to repurchase 285,206 285,206 — — FHLB advances 4,280,681 — 4,090,954 — Other borrowings 764,870 — 755,592 — Accrued interest payable 57,094 — 57,094 — Standby letters of credit 1,318 — — 1,318 Off-Balance Sheet Financial Instruments Commitments to extend credit $ — $ — $ — $ 3,839 The methods utilized to measure the fair value of financial instruments at September 30, 2024 and December 31, 2023 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						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net income	$ 143,802	$ 121,229	$ 120,284	$ 147,876	$ 155,036	$ 146,600	$ 385,315	$ 449,512

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2024
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)	9 Months Ended
	Sep. 30, 2024
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 September 30, 2024 and December 31, 2023, and the results of its operations for the three and nine months ended September 30, 2024 and 2023. 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, 2023. 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.
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Accounting Guidance Adopted in 2024 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, including interim periods within those fiscal years. The adoption of this guidance on January 1, 2024 did not have a material impact 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. The adoption of this guidance on a modified retrospective basis on January 1, 2024 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. As of September 30, 2024, substantially all of the Company’s LIBOR exposure was addressed and remaining LIBOR-based contracts are expected to transition to alternate reference rates at their next index reset dates. Old National believes the adoption of this guidance on activities subsequent to September 30, 2024 will not have a material impact on the consolidated financial statements. Accounting Guidance Pending Adoption FASB ASC 280 – In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendments are intended to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. In addition, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. A public entity should apply the amendments retrospectively to all prior periods presented in the financial statements. Upon transition, the segment expense categories and amounts disclosed in the prior periods should be based on the significant segment expense categories identified and disclosed in the period of adoption. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements. FASB ASC 740 – In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures . Among other things, these amendments require that public business entities on an annual basis disclose additional information in specified categories with respect to the reconciliation of the effective tax rate to the statutory rate for federal, state, and foreign income taxes. It also requires greater detail about individual reconciling items in the rate reconciliation to the extent the impact of those items exceeds a quantitative threshold (if the effect of those reconciling items is equal to or greater than 5 percent of the amount computed by multiplying pretax income (loss) by the applicable statutory income tax rate). In addition, the ASU requires information pertaining to taxes paid (net of refunds received) to be disaggregated for federal, state, and foreign taxes and further disaggregated for specific jurisdictions to the extent the related amounts are equal to or greater than 5 percent of total income taxes paid (net of refunds received). The amendments in this ASU are effective for annual periods beginning after December 15, 2024. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements.

Acquisition and Divestiture A_2

Acquisition and Divestiture Activity (Tables)	9 Months Ended
	Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Summary of Business Acquisition	The following table presents the preliminary valuation of the assets acquired and liabilities assumed and the fair value of consideration as of the merger date: (dollars and shares in thousands) April 1, Assets Cash and cash equivalents $ 177,791 Investment securities 342,490 FHLB/Federal Reserve Bank stock 14,426 Loans held-for-sale 21,159 Loans, net of allowance for credit losses 2,120,627 Premises and equipment 22,481 Goodwill 178,283 Other intangible assets 46,125 Company-owned life insurance 91,475 Other assets 94,312 Total assets $ 3,109,169 Liabilities Deposits $ 2,560,124 Federal Home Loan Bank advances 75,000 Other borrowings 30,000 Accrued expenses and other liabilities 26,447 Total liabilities $ 2,691,571 Fair value of consideration Common stock (24,014 shares issued at $17.41 per share) $ 417,598 Total consideration $ 417,598

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2024
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 Nine Months Ended (dollars and shares in thousands, except per share data) 2024 2023 2024 2023 Net income $ 143,802 $ 147,876 $ 385,315 $ 449,512 Preferred dividends (4,034) (4,034) (12,101) (12,101) Net income applicable to common shares $ 139,768 $ 143,842 $ 373,214 $ 437,411 Weighted average common shares outstanding: Weighted average common shares outstanding (basic) 315,622 290,648 307,426 290,763 Effect of dilutive securities: Restricted stock 1,709 1,069 1,179 1,045 Stock appreciation rights — — — 1 Weighted average diluted shares outstanding 317,331 291,717 308,605 291,809 Basic Net Income Per Common Share $ 0.44 $ 0.49 $ 1.21 $ 1.50 Diluted Net Income Per Common Share $ 0.44 $ 0.49 $ 1.21 $ 1.50

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Fair Value of Available-for-Sale and Held-to-Maturity Investment Securities Portfolio	The following table summarizes the amortized cost and fair value of the available-for-sale portfolio and the corresponding amounts of gross unrealized gains, unrealized losses, and basis adjustments in AOCI. (dollars in thousands) Amortized Unrealized Unrealized Basis Adjustments (1) Fair September 30, 2024 Available-for-Sale U.S. Treasury $ 260,893 $ 157 $ (13,076) $ (37,696) $ 210,278 U.S. government-sponsored entities and agencies 1,506,552 227 (160,832) (51,669) 1,294,278 Mortgage-backed securities - Agency 5,608,308 20,435 (527,687) — 5,101,056 States and political subdivisions 527,887 1,199 (21,042) 3,521 511,565 Pooled trust preferred securities 13,805 — (2,648) — 11,157 Other securities 315,787 786 (12,467) — 304,106 Total available-for-sale securities $ 8,233,232 $ 22,804 $ (737,752) $ (85,844) $ 7,432,440 December 31, 2023 Available-for-Sale U.S. Treasury $ 449,817 $ 154 $ (11,941) $ (41,297) $ 396,733 U.S. government-sponsored entities and agencies 1,487,879 33 (192,717) (63,931) 1,231,264 Mortgage-backed securities - Agency 4,835,319 3,093 (621,852) — 4,216,560 States and political subdivisions 554,509 878 (23,057) 2,930 535,260 Pooled trust preferred securities 13,797 — (2,460) — 11,337 Other securities 343,568 449 (22,116) — 321,901 Total available-for-sale securities $ 7,684,889 $ 4,607 $ (874,143) $ (102,298) $ 6,713,055 (1) Basis adjustments represent the amount of fair value hedging adjustments included in the carrying amounts of fixed-rate investment securities assets designated in fair value hedging arrangements. See Note 15 to the consolidated financial statements for additional information regarding these derivative financial instruments.
Schedule of Held-to-Maturity Investment Securities with Unrecognized Losses	The following table summarizes the amortized cost and fair value of the held-to-maturity investment securities portfolio and the corresponding amounts of gross unrecognized gains and losses. (dollars in thousands) Amortized Unrecognized Unrecognized Fair September 30, 2024 Held-to-Maturity U.S. government-sponsored entities and agencies $ 831,160 $ — $ (130,687) $ 700,473 Mortgage-backed securities - Agency 984,770 — (130,454) 854,316 States and political subdivisions 1,153,563 1,680 (105,827) 1,049,416 Allowance for securities held-to-maturity (150) — — (150) Total held-to-maturity securities $ 2,969,343 $ 1,680 $ (366,968) $ 2,604,055 December 31, 2023 Held-to-Maturity U.S. government-sponsored entities and agencies $ 825,953 $ — $ (154,827) $ 671,126 Mortgage-backed securities - Agency 1,029,131 — (147,137) 881,994 States and political subdivisions 1,158,559 1,800 (112,141) 1,048,218 Allowance for securities held-to-maturity (150) — — (150) Total held-to-maturity securities $ 3,013,493 $ 1,800 $ (414,105) $ 2,601,188 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 September 30, 2024 Held-to-Maturity U.S. government-sponsored entities $ — $ — $ 700,473 $ (130,687) $ 700,473 $ (130,687) Mortgage-backed securities - Agency — — 854,316 (130,454) 854,316 (130,454) States and political subdivisions 671 (1) 978,641 (105,826) 979,312 (105,827) Total held-to-maturity $ 671 $ (1) $ 2,533,430 $ (366,967) $ 2,534,101 $ (366,968) December 31, 2023 Held-to-Maturity U.S. government-sponsored entities $ — $ — $ 671,126 $ (154,827) $ 671,126 $ (154,827) Mortgage-backed securities - Agency — — 881,994 (147,137) 881,994 (147,137) States and political subdivisions — — 977,154 (112,141) 977,154 (112,141) Total held-to-maturity $ — $ — $ 2,530,274 $ (414,105) $ 2,530,274 $ (414,105)
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 Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Proceeds $ 22,545 $ 28,531 $ 370,870 $ 111,419 Realized gains 90 54 98 1,002 Realized losses (166) (295) (188) (6,442)
Schedule of Expected Maturities of Investment Securities Portfolio	Weighted average yield is based on amortized cost. September 30, 2024 (dollars in thousands) Amortized Fair Weighted Maturity Available-for-Sale Within one year $ 408,483 $ 409,578 4.31 % One to five years 2,841,655 2,728,724 3.87 Five to ten years 3,716,071 3,257,518 2.39 Beyond ten years 1,267,023 1,036,620 2.66 Total $ 8,233,232 $ 7,432,440 3.04 % Held-to-Maturity Within one year $ 153 $ 146 2.20 % One to five years 164,752 139,140 2.56 Five to ten years 1,248,019 1,115,473 2.65 Beyond ten years 1,556,419 1,349,296 2.72 Total $ 2,969,343 $ 2,604,055 2.68 %
Schedule of 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 September 30, 2024 Available-for-Sale U.S. Treasury $ 1,998 $ (4) $ 193,148 $ (13,072) $ 195,146 $ (13,076) U.S. government-sponsored entities 55,754 (114) 1,209,200 (160,718) 1,264,954 (160,832) Mortgage-backed securities - Agency 93,981 (786) 3,633,891 (526,901) 3,727,872 (527,687) States and political subdivisions 22,970 (114) 306,635 (20,928) 329,605 (21,042) Pooled trust preferred securities — — 11,157 (2,648) 11,157 (2,648) Other securities 47,408 (157) 209,600 (12,310) 257,008 (12,467) Total available-for-sale $ 222,111 $ (1,175) $ 5,563,631 $ (736,577) $ 5,785,742 $ (737,752) December 31, 2023 Available-for-Sale U.S. Treasury $ 8,937 $ (42) $ 191,027 $ (11,899) $ 199,964 $ (11,941) U.S. government-sponsored entities — — 1,189,314 (192,717) 1,189,314 (192,717) Mortgage-backed securities - Agency 90,145 (710) 3,835,552 (621,142) 3,925,697 (621,852) States and political subdivisions 86,865 (495) 259,767 (22,562) 346,632 (23,057) Pooled trust preferred securities — — 11,337 (2,460) 11,337 (2,460) Other securities 39,032 (229) 255,888 (21,887) 294,920 (22,116) Total available-for-sale $ 224,979 $ (1,476) $ 5,742,885 $ (872,667) $ 5,967,864 $ (874,143)

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Schedule of Composition of Loans and Impact of Adoption	The portfolio segment reclassifications follow: Balance Sheet Portfolio Portfolio (dollars in thousands) September 30, 2024 Commercial (1) $ 10,408,095 $ (224,732) $ 10,183,363 Commercial real estate 16,356,216 (175,628) 16,180,588 BBCC N/A 400,360 400,360 Residential real estate 6,757,896 — 6,757,896 Consumer 2,878,436 (2,878,436) N/A Indirect N/A 1,096,234 1,096,234 Direct N/A 419,201 419,201 Home equity N/A 1,363,001 1,363,001 Total loans (2) $ 36,400,643 $ — $ 36,400,643 Allowance for credit losses on loans (380,840) — (380,840) Net loans $ 36,019,803 $ — $ 36,019,803 December 31, 2023 Commercial (1) $ 9,512,230 $ (232,764) $ 9,279,466 Commercial real estate 14,140,629 (169,058) 13,971,571 BBCC N/A 401,822 401,822 Residential real estate 6,699,443 — 6,699,443 Consumer 2,639,625 (2,639,625) N/A Indirect N/A 1,050,982 1,050,982 Direct N/A 523,172 523,172 Home equity N/A 1,065,471 1,065,471 Total loans (2) $ 32,991,927 $ — $ 32,991,927 Allowance for credit losses on loans (307,610) — (307,610) Net loans $ 32,684,317 $ — $ 32,684,317 (1) Includes direct finance leases of $133.6 million at September 30, 2024 and $169.7 million at December 31, 2023. (2) Includes unearned income of $183.4 million at September 30, 2024 and $93.7 million at December 31, 2023.
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 September 30, 2024 Commercial $ 138,460 $ 3,245 $ (11,512) $ 308 $ 6,341 $ 136,842 Commercial real estate 189,911 (442) (2,799) 214 18,015 204,899 BBCC 2,897 — (676) 56 415 2,692 Residential real estate 23,135 — — 64 (1,711) 21,488 Indirect 1,233 — (1,715) 290 5,853 5,661 Direct 3,131 — (2,137) 475 958 2,427 Home equity 7,568 — (126) 84 (695) 6,831 Total $ 366,335 $ 2,803 $ (18,965) $ 1,491 $ 29,176 $ 380,840 Three Months Ended September 30, 2023 Commercial $ 127,403 $ — $ (16,705) $ 1,616 $ 12,441 $ 124,755 Commercial real estate 136,897 — (2,291) 102 10,267 144,975 BBCC 2,776 — (1,049) 70 912 2,709 Residential real estate 20,421 — (15) 28 346 20,780 Indirect 1,407 — (490) 325 79 1,321 Direct 4,755 — (2,180) 580 416 3,571 Home equity 6,896 — (20) 341 (1,346) 5,871 Total $ 300,555 $ — $ (22,750) $ 3,062 $ 23,115 $ 303,982 Nine Months Ended September 30, 2024 Commercial $ 118,333 $ 17,838 $ (25,098) $ 1,104 $ 24,665 $ 136,842 Commercial real estate 155,099 8,041 (12,541) 1,791 52,509 204,899 BBCC 2,887 — (1,687) 304 1,188 2,692 Residential real estate 20,837 134 — 845 (328) 21,488 Indirect 1,236 — (3,937) 957 7,405 5,661 Direct 3,169 59 (6,449) 1,527 4,121 2,427 Home equity 6,049 653 (314) 229 214 6,831 Total $ 307,610 $ 26,725 $ (50,026) $ 6,757 $ 89,774 $ 380,840 Nine Months Ended September 30, 2023 Commercial $ 120,612 $ — $ (37,459) $ 3,713 $ 37,889 $ 124,755 Commercial real estate 138,244 — (5,938) 1,394 11,275 144,975 BBCC 2,431 — (1,171) 174 1,275 2,709 Residential real estate 21,916 — (256) 153 (1,033) 20,780 Indirect 1,532 — (2,089) 1,349 529 1,321 Direct 12,116 — (8,018) 1,798 (2,325) 3,571 Home equity 6,820 — (330) 471 (1,090) 5,871 Total $ 303,671 $ — $ (55,261) $ 9,052 $ 46,520 $ 303,982 Three Months Ended Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Allowance for credit losses on unfunded loan commitments: Balance at beginning of period $ 25,733 $ 37,007 $ 31,226 $ 32,188 Provision for credit losses on unfunded loan commitments — — 1,763 — Provision (release) for credit losses on unfunded loan (679) (4,047) (7,935) 772 Balance at end of period $ 25,054 $ 32,960 $ 25,054 $ 32,960
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: (dollars in thousands) Origination Year Revolving to Term 2024 2023 2022 2021 2020 Prior Revolving Total September 30, 2024 Commercial: Pass $ 1,555,665 $ 1,519,627 $ 1,243,415 $ 734,457 $ 467,036 $ 636,137 $ 2,560,086 $ 657,716 $ 9,374,139 Special Mention 34,491 62,344 43,253 14,913 18,003 12,073 120,436 25,235 330,748 Classified: Substandard 11,204 63,668 97,872 32,674 21,667 26,861 89,643 29,742 373,331 Nonaccrual 352 812 2,723 792 637 2,354 242 4,813 12,725 Doubtful 1,460 11,485 25,610 7,640 5,726 1,226 22,294 16,979 92,420 Total $ 1,603,172 $ 1,657,936 $ 1,412,873 $ 790,476 $ 513,069 $ 678,651 $ 2,792,701 $ 734,485 $ 10,183,363 Commercial real estate: Pass $ 1,649,355 $ 2,584,786 $ 3,882,068 $ 2,267,541 $ 1,407,050 $ 1,877,393 $ 143,314 $ 929,671 $ 14,741,178 Special Mention 47,435 35,196 105,531 126,457 49,338 68,825 4,492 56,651 493,925 Classified: Substandard 62,087 37,197 244,297 62,366 39,810 172,429 1,018 79,285 698,489 Nonaccrual 421 708 4,267 2,881 2,763 15,942 — 361 27,343 Doubtful 7,335 5,675 4,858 53,679 25,556 75,276 — 47,274 219,653 Total $ 1,766,633 $ 2,663,562 $ 4,241,021 $ 2,512,924 $ 1,524,517 $ 2,209,865 $ 148,824 $ 1,113,242 $ 16,180,588 BBCC: Pass $ 60,158 $ 83,681 $ 58,701 $ 36,774 $ 31,632 $ 30,934 $ 61,932 $ 16,809 $ 380,621 Special Mention 392 2,740 1,034 720 723 369 3,818 3,074 12,870 Classified: Substandard 105 499 145 200 30 226 694 523 2,422 Nonaccrual — 262 434 347 67 1,010 — 642 2,762 Doubtful — 231 642 301 15 1 — 495 1,685 Total $ 60,655 $ 87,413 $ 60,956 $ 38,342 $ 32,467 $ 32,540 $ 66,444 $ 21,543 $ 400,360 Origination Year Revolving to Term 2023 2022 2021 2020 2019 Prior Revolving Total December 31, 2023 Commercial: Pass $ 1,826,289 $ 1,573,669 $ 985,964 $ 520,883 $ 450,911 $ 495,979 $ 2,051,985 $ 651,953 $ 8,557,633 Special Mention 20,038 90,031 19,953 36,906 25,756 47,357 89,765 44,348 374,154 Classified: Substandard 27,271 41,164 27,990 37,618 10,461 29,981 72,703 56,716 303,904 Nonaccrual 32 7,034 — — 823 3,411 — 5,461 16,761 Doubtful — 7,261 5,925 4,875 1,742 7,211 — — 27,014 Total $ 1,873,630 $ 1,719,159 $ 1,039,832 $ 600,282 $ 489,693 $ 583,939 $ 2,214,453 $ 758,478 $ 9,279,466 Commercial real estate: Pass $ 2,177,841 $ 3,515,702 $ 2,563,638 $ 1,576,044 $ 1,010,351 $ 1,161,119 $ 103,332 $ 960,386 $ 13,068,413 Special Mention 69,648 69,946 68,708 27,059 52,107 95,896 3,893 64,730 451,987 Classified: Substandard 26,638 56,423 21,401 28,983 61,186 49,558 — 48,760 292,949 Nonaccrual — 21,919 10,706 1,975 1,634 8,632 — 1,400 46,266 Doubtful 5,360 429 30,897 2,306 37,777 35,187 — — 111,956 Total $ 2,279,487 $ 3,664,419 $ 2,695,350 $ 1,636,367 $ 1,163,055 $ 1,350,392 $ 107,225 $ 1,075,276 $ 13,971,571 BBCC: Pass $ 81,102 $ 64,583 $ 44,307 $ 38,086 $ 27,557 $ 19,028 $ 68,807 $ 33,361 $ 376,831 Special Mention — — 857 700 1,001 349 2,144 12,728 17,779 Classified: Substandard 436 193 252 — — 604 15 1,006 2,506 Nonaccrual — — 482 — 4 1,105 — 1,402 2,993 Doubtful 302 727 254 286 60 84 — — 1,713 Total $ 81,840 $ 65,503 $ 46,152 $ 39,072 $ 28,622 $ 21,170 $ 70,966 $ 48,497 $ 401,822 Origination Year Revolving to Term (dollars in thousands) 2024 2023 2022 2021 2020 Prior Revolving Total September 30, 2024 Residential real estate: Risk Rating: Performing $ 371,299 $ 488,590 $ 1,469,840 $ 1,696,514 $ 1,605,901 $ 1,067,863 $ 60 $ 277 $ 6,700,344 Nonperforming 157 4,145 10,655 5,381 4,283 32,931 — — 57,552 Total $ 371,456 $ 492,735 $ 1,480,495 $ 1,701,895 $ 1,610,184 $ 1,100,794 $ 60 $ 277 $ 6,757,896 Indirect: Risk Rating: Performing $ 348,367 $ 309,592 $ 257,064 $ 107,785 $ 47,552 $ 20,760 $ — $ — $ 1,091,120 Nonperforming 302 1,109 1,575 1,387 413 328 — — 5,114 Total $ 348,669 $ 310,701 $ 258,639 $ 109,172 $ 47,965 $ 21,088 $ — $ — $ 1,096,234 Direct: Risk Rating: Performing $ 56,302 $ 68,103 $ 58,794 $ 53,593 $ 21,871 $ 56,853 $ 97,352 $ 2,509 $ 415,377 Nonperforming 66 307 674 390 593 1,706 2 86 3,824 Total $ 56,368 $ 68,410 $ 59,468 $ 53,983 $ 22,464 $ 58,559 $ 97,354 $ 2,595 $ 419,201 Home equity: Risk Rating: Performing $ — $ — $ 262 $ 203 $ 1,135 $ 11,759 $ 1,300,266 $ 28,857 $ 1,342,482 Nonperforming — — 1,311 146 244 5,383 3,212 10,223 20,519 Total $ — $ — $ 1,573 $ 349 $ 1,379 $ 17,142 $ 1,303,478 $ 39,080 $ 1,363,001 Origination Year Revolving to Term 2023 2022 2021 2020 2019 Prior Revolving Total December 31, 2023 Residential real estate: Risk Rating: Performing $ 453,743 $ 1,508,671 $ 1,836,078 $ 1,705,131 $ 430,783 $ 722,987 $ — $ 279 $ 6,657,672 Nonperforming 116 4,563 4,004 3,375 4,078 25,635 — — 41,771 Total $ 453,859 $ 1,513,234 $ 1,840,082 $ 1,708,506 $ 434,861 $ 748,622 $ — $ 279 $ 6,699,443 Indirect: Risk Rating: Performing $ 393,369 $ 355,822 $ 162,735 $ 82,871 $ 37,967 $ 13,815 $ — $ 196 $ 1,046,775 Nonperforming 372 1,472 1,207 547 318 291 — — 4,207 Total $ 393,741 $ 357,294 $ 163,942 $ 83,418 $ 38,285 $ 14,106 $ — $ 196 $ 1,050,982 Direct: Risk Rating: Performing $ 109,372 $ 90,310 $ 92,491 $ 48,387 $ 29,659 $ 67,129 $ 75,080 $ 4,852 $ 517,280 Nonperforming 67 531 517 560 210 3,872 124 11 5,892 Total $ 109,439 $ 90,841 $ 93,008 $ 48,947 $ 29,869 $ 71,001 $ 75,204 $ 4,863 $ 523,172 Home equity: Risk Rating: Performing $ 290 $ 164 $ 160 $ 140 $ 679 $ 4,483 $ 1,019,389 $ 23,918 $ 1,049,223 Nonperforming — 310 328 404 741 4,327 2,844 7,294 16,248 Total $ 290 $ 474 $ 488 $ 544 $ 1,420 $ 8,810 $ 1,022,233 $ 31,212 $ 1,065,471 The following table summarizes the gross charge-offs of loans by loan portfolio segment and origination year: Origination Year (dollars in thousands) 2024 2023 2022 2021 2020 Prior Revolving Total Three Months Ended September 30, 2024 Commercial $ 1,234 $ 8,031 $ 633 $ 297 $ 840 $ 55 $ 422 $ 11,512 Commercial real estate — 140 61 44 — 2,554 — 2,799 BBCC — 481 164 21 — 10 — 676 Residential real estate — — — — — — — — Indirect 199 797 360 110 41 208 — 1,715 Direct 8 97 398 475 224 214 721 2,137 Home equity — — — — — 126 — 126 Total gross charge-offs $ 1,441 $ 9,546 $ 1,616 $ 947 $ 1,105 $ 3,167 $ 1,143 $ 18,965 Origination Year 2023 2022 2021 2020 2019 Prior Revolving Total Three Months Ended September 30, 2023 Commercial $ — $ 4,154 $ 12,271 $ — $ — $ 63 $ 217 $ 16,705 Commercial real estate — — — 1,744 — 547 — 2,291 BBCC 499 501 49 — — — — 1,049 Residential real estate — — — — — 15 — 15 Indirect 75 276 86 12 10 31 — 490 Direct 19 429 423 112 270 60 867 2,180 Home equity — — — — — 20 — 20 Total gross charge-offs $ 593 $ 5,360 $ 12,829 $ 1,868 $ 280 $ 736 $ 1,084 $ 22,750 Origination Year 2024 2023 2022 2021 2020 Prior Revolving Total Nine Months Ended September 30, 2024 Commercial $ 1,234 $ 10,389 $ 10,263 $ 719 $ 891 $ 625 $ 977 $ 25,098 Commercial real estate — 140 84 2,688 — 9,629 — 12,541 BBCC — 1,086 393 56 112 40 — 1,687 Residential real estate — — — — — — — — Indirect 253 1,698 1,209 431 80 266 — 3,937 Direct 83 292 1,368 1,351 510 609 2,236 6,449 Home equity — — — 34 — 280 — 314 Total gross charge-offs $ 1,570 $ 13,605 $ 13,317 $ 5,279 $ 1,593 $ 11,449 $ 3,213 $ 50,026 Origination Year 2023 2022 2021 2020 2019 Prior Revolving Total Nine Months Ended September 30, 2023 Commercial $ — $ 6,254 $ 23,432 $ 120 $ 6,789 $ 302 $ 562 $ 37,459 Commercial real estate — 54 735 2,144 — 3,005 — 5,938 BBCC 499 548 77 47 — — — 1,171 Residential real estate — — — — — 256 — 256 Indirect 85 954 640 153 137 120 — 2,089 Direct 19 1,330 1,805 570 1,011 450 2,833 8,018 Home equity — — — — — 330 — 330 Total gross charge-offs $ 603 $ 9,140 $ 26,689 $ 3,034 $ 7,937 $ 4,463 $ 3,395 $ 55,261
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 September 30, 2024 Commercial $ 11,690 $ 6,213 $ 35,974 $ 53,877 $ 10,129,486 $ 10,183,363 Commercial real estate 20,125 38,395 39,891 98,411 16,082,177 16,180,588 BBCC 1,095 — 1,361 2,456 397,904 400,360 Residential 5,817 740 2,489 9,046 6,748,850 6,757,896 Indirect 7,702 2,088 1,298 11,088 1,085,146 1,096,234 Direct 2,172 1,029 1,460 4,661 414,540 419,201 Home equity 5,339 3,791 7,187 16,317 1,346,684 1,363,001 Total $ 53,940 $ 52,256 $ 89,660 $ 195,856 $ 36,204,787 $ 36,400,643 December 31, 2023 Commercial $ 16,128 $ 1,332 $ 4,861 $ 22,321 $ 9,257,145 $ 9,279,466 Commercial real estate 9,081 5,254 30,660 44,995 13,926,576 13,971,571 BBCC 1,368 134 977 2,479 399,343 401,822 Residential 12,358 367 15,249 27,974 6,671,469 6,699,443 Indirect 7,025 1,854 1,342 10,221 1,040,761 1,050,982 Direct 5,436 1,455 1,787 8,678 514,494 523,172 Home equity 7,791 2,347 6,659 16,797 1,048,674 1,065,471 Total $ 59,187 $ 12,743 $ 61,535 $ 133,465 $ 32,858,462 $ 32,991,927
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: September 30, 2024 December 31, 2023 (dollars in thousands) Nonaccrual Nonaccrual Past Due Nonaccrual Nonaccrual Past Due Commercial $ 105,145 $ 32,436 $ 477 $ 43,775 $ 13,143 $ 242 Commercial real estate 246,996 40,356 90 158,222 24,507 585 BBCC 4,447 — 80 4,706 — 95 Residential 57,552 — — 41,771 — — Indirect 5,114 — 160 4,207 — 8 Direct 3,824 — 25 5,892 — 31 Home equity 20,519 — 345 16,248 — — Total $ 443,597 $ 72,792 $ 1,177 $ 274,821 $ 37,650 $ 961 Type of Collateral (dollars in thousands) Real Blanket Investment Auto Other September 30, 2024 Commercial $ 18,944 $ 64,073 $ 4,481 $ 8,971 $ 4,258 Commercial real estate 240,163 1,552 2,106 — 120 BBCC 3,185 842 97 323 — Residential 57,552 — — — — Indirect — — — 5,114 — Direct 2,891 40 5 383 26 Home equity 20,519 — — — — Total loans $ 343,254 $ 66,507 $ 6,689 $ 14,791 $ 4,404 December 31, 2023 Commercial $ 14,303 $ 24,729 $ 2,577 $ 280 $ 328 Commercial real estate 146,425 — 1,167 — 6,107 BBCC 3,522 794 — 390 — Residential 41,771 — — — — Indirect — — — 4,207 — Direct 4,727 1 3 366 29 Home equity 16,248 — — — — Total loans $ 226,996 $ 25,524 $ 3,747 $ 5,243 $ 6,464
Schedule of Activity in Trouble Debt Restructurings	The following table presents the amortized cost basis of financial difficulty modifications that were modified for borrowers experiencing financial difficulty, by class of loans and type of modification: (dollars in thousands) Term Payment Total Three Months Ended September 30, 2024 Commercial $ 17,969 $ 4,776 0.2 % Commercial real estate 11,121 2,554 0.1 % Total $ 29,090 $ 7,330 0.1 % Three Months Ended September 30, 2023 Commercial $ 3,502 $ — 0.0 % Commercial real estate 93,844 — 0.7 % Total $ 97,346 $ — 0.3 % Nine Months Ended September 30, 2024 Commercial $ 27,085 $ 4,776 0.3 % Commercial real estate 56,051 2,554 0.4 % Total $ 83,136 $ 7,330 0.2 % Nine Months Ended September 30, 2023 Commercial $ 20,811 $ — 0.2 % Commercial real estate 116,580 $ — 0.8 % Total $ 137,391 $ — 0.4 % Old National closely monitors the performance of financial difficulty modifications to understand the effectiveness of its efforts. The following table presents the performance of financial difficulty modifications in the twelve months following modification: (dollars in thousands) 30-59 Days 60-89 Days Past Due Total Current Total September 30, 2024 Commercial $ — $ — $ 3,854 $ 3,854 $ 31,861 $ 35,715 Commercial real estate 5,707 3,726 21,463 30,896 67,421 98,317 Total $ 5,707 $ 3,726 $ 25,317 $ 34,750 $ 99,282 $ 134,032 September 30, 2023 Commercial $ — $ — $ 2,541 $ 2,541 $ 18,270 $ 20,811 Commercial real estate 1,086 — — 1,086 115,494 116,580 Total $ 1,086 $ — $ 2,541 $ 3,627 $ 133,764 $ 137,391 The following table summarizes the nature of the financial difficulty modifications by class of loans: (dollars in thousands) Weighted- Weighted- Three Months Ended September 30, 2024 Commercial 4.4 6.0 Commercial real estate 6.5 7.0 Total 5.2 6.4 Three Months Ended September 30, 2023 Commercial 7.3 — Commercial real estate 9.2 — Total 9.2 — Nine Months Ended September 30, 2024 Commercial 6.8 6.0 Commercial real estate 8.8 7.0 Total 8.2 6.4 Nine Months Ended September 30, 2023 Commercial 5.7 — Commercial real estate 8.9 — Total 8.4 —
Schedule of Financing Receivable, Purchased With Credit Deterioration	Old National has purchased loans, for which there was, at acquisition, evidence of more than insignificant deterioration of credit quality since origination. The carrying amount of those loans is as follows: (dollars in thousands) CapStar (1) Purchase price of loans at acquisition $ 610,691 Allowance for credit losses at acquisition 26,725 Non-credit discount/(premium) at acquisition 41,886 Par value of acquired loans at acquisition $ 679,302 (1) Old National acquired CapStar effective April 1, 2024.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2024
Leases [Abstract]
Schedule of Components of Lease Expense	The components of lease expense were as follows: Affected Line Three Months Ended Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Operating lease cost Occupancy/Equipment expense $ 8,258 $ 7,462 $ 24,352 $ 23,569 Finance lease cost: Amortization of right-of-use assets Occupancy expense 2,188 742 4,427 2,170 Interest on lease liabilities Interest expense 318 183 752 536 Sub-lease income Occupancy expense (110) (119) (358) (281) Total $ 10,654 $ 8,268 $ 29,173 $ 25,994
Schedule of Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to leases was as follows: (dollars in thousands) September 30, December 31, Operating Leases Operating lease right-of-use assets $ 188,533 $ 185,506 Operating lease liabilities 206,863 204,960 Finance Leases Premises and equipment, net 32,096 19,820 Other borrowings 33,598 20,955 Weighted-Average Remaining Lease Term (in Years) Operating leases 8.0 8.5 Finance leases 7.0 10.5 Weighted-Average Discount Rate Operating leases 3.13 % 3.04 % Finance leases 3.98 % 3.90 %
Schedule of Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows: Nine Months Ended (dollars in thousands) 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 24,849 $ 23,766 Operating cash flows from finance leases 752 536 Financing cash flows from finance leases 4,061 1,893
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 September 30, 2024: (dollars in thousands) Operating Finance 2024 $ 8,418 $ 2,432 2025 34,407 9,215 2026 33,720 6,477 2027 31,985 4,816 2028 28,028 3,210 Thereafter 98,614 12,612 Total undiscounted lease payments 235,172 38,762 Amounts representing interest (28,309) (5,164) Lease liability $ 206,863 $ 33,598

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2024
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 Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Balance at beginning of period $ 2,170,709 $ 1,998,716 $ 1,998,716 $ 1,998,716 Acquisitions and adjustments 6,290 — 178,283 — Balance at end of period $ 2,176,999 $ 1,998,716 $ 2,176,999 $ 1,998,716
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 September 30, 2024 Core deposit $ 189,636 $ (89,825) $ 99,811 Customer trust relationships 52,621 (24,347) 28,274 Total other intangible assets $ 242,257 $ (114,172) $ 128,085 December 31, 2023 Core deposit $ 143,511 $ (72,940) $ 70,571 Customer trust relationships 52,621 (20,942) 31,679 Total other intangible assets $ 196,132 $ (93,882) $ 102,250
Schedule of Estimated Amortization Expense for Future Years	Estimated amortization expense for future years is as follows: (dollars in thousands) 2024 remaining $ 7,238 2025 26,116 2026 22,474 2027 18,947 2028 15,598 Thereafter 37,712 Total $ 128,085

Qualified Affordable Housing _2

Qualified Affordable Housing Projects and Other Tax Credit Investments (Tables)	9 Months Ended
	Sep. 30, 2024
Securities Sold under Agreements to Repurchase [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) September 30, 2024 December 31, 2023 Investment Accounting Method Investment Unfunded Commitment (1) Investment Unfunded LIHTC Proportional amortization $ 202,128 $ 122,826 $ 114,991 $ 75,981 FHTC Proportional amortization (2) 31,459 25,535 34,220 27,421 NMTC Consolidation 54,063 — 47,727 — Renewable Energy Equity 4 — 201 — Total $ 287,654 $ 148,361 $ 197,139 $ 103,402 (1) All commitments will be paid by Old National by December 31, 2035. (2) Old National’s FHTC investments were previously accounted for under the Equity method of accounting prior to the adoption of ASU 2023-02 on January 1, 2024. 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 September 30, 2024 LIHTC $ 2,777 $ (3,739) FHTC 738 (690) NMTC 3,076 (3,825) Renewable Energy — — Total $ 6,591 $ (8,254) Three Months Ended September 30, 2023 LIHTC $ 3,208 $ (3,582) FHTC 330 (399) NMTC 2,092 (2,611) Renewable Energy 222 — Total $ 5,852 $ (6,592) Nine Months Ended September 30, 2024 LIHTC $ 8,042 $ (10,813) FHTC 2,000 (2,043) NMTC 8,168 (10,175) Renewable Energy 197 — Total $ 18,407 $ (23,031) Nine Months Ended September 30, 2023 LIHTC $ 6,135 $ (7,398) FHTC 1,178 (1,423) NMTC 6,275 (7,833) Renewable Energy 714 — Total $ 14,302 $ (16,654) (1) The amortization expense for the LIHTC and FHTC investments is included in our income tax expense. Prior to the adoption of ASU 2023-02 on January 1, 2024, FHTC amortization expense was included in noninterest expense. NMTC amortization is recognized in noninterest expense in correlation to the recognition of tax credits on our tax return. Amortization expense for the 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 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)	9 Months Ended
	Sep. 30, 2024
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 Nine Months Ended September 30, (dollars in thousands) 2024 2023 Outstanding at period end $ 244,626 $ 279,061 Average amount outstanding during the period 261,818 351,362 Maximum amount outstanding at any month-end during the period 319,423 430,537 Weighted-average interest rate: During the period 1.11 % 0.91 % At period end 1.09 % 1.35 %
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 September 30, 2024 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 $ 244,626 $ — $ — $ — $ 244,626 Total $ 244,626 $ — $ — $ — $ 244,626

Federal Home Loan Bank Advanc_2

Federal Home Loan Bank Advances (Tables)	9 Months Ended
	Sep. 30, 2024
Federal Home Loan Banks [Abstract]
Summary of FHLB Advances	The following table summarizes Old National Bank’s FHLB advances: (dollars in thousands) September 30, December 31, FHLB advances (fixed rates 2.19% to 5.23% and variable rates 4.71% to 5.24%) maturing October 2024 to March 2044 $ 4,475,528 $ 4,300,528 Fair value hedge basis adjustments and unamortized (4,375) (19,847) Total $ 4,471,153 $ 4,280,681
Summary of Contractual Maturities of FHLB Advances	Contractual maturities of FHLB advances at September 30, 2024 were as follows: (dollars in thousands) Due in 2024 $ 150,243 Due in 2025 550,285 Due in 2026 100,000 Due in 2028 650,000 Thereafter 3,025,000 Fair value hedge basis adjustments and unamortized prepayment fees (4,375) Total $ 4,471,153

Other Borrowings (Tables)

Other Borrowings (Tables)	9 Months Ended
	Sep. 30, 2024
Other Liabilities Disclosure [Abstract]
Summary of Other Borrowings	The following table summarizes Old National’s other borrowings: (dollars in thousands) September 30, December 31, Old National Bancorp: Subordinated debentures (fixed rate 5.88%) maturing September 2026 $ 150,000 $ 150,000 Subordinated debentures (fixed rate 5.25%) maturing June 2030 30,000 — Junior subordinated debentures (rates of 6.42% to 9.09%) maturing July 2031 to September 2037 136,643 136,643 Senior unsecured notes (fixed rate 4.13%) matured August 2024 — 175,000 Unamortized debt issuance costs related to senior unsecured notes — (91) Other basis adjustments 14,338 18,207 Old National Bank: Finance lease liabilities 33,598 20,955 Subordinated debentures (3-month SOFR plus 4.618%; variable rate 9.87%) 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 186,020 154,284 Other (1) 35,455 97,872 Total other borrowings $ 598,054 $ 764,870 (1) Includes overnight borrowings to collateralize certain derivative positions totaling $35.4 million at September 30, 2024 and $97.6 million at December 31, 2023. The following table summarizes the terms of our outstanding junior subordinated debentures at September 30, 2024: (dollars in thousands) Rate at September 30, Name of Trust Issuance Date Issuance Rate Maturity Date Bridgeview Statutory Trust I July 2001 $ 15,464 3-month SOFR plus 3.58% 9.09% July 31, 2031 Bridgeview Capital Trust II December 2002 15,464 3-month SOFR plus 3.35% 8.91% 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 SOFR plus 1.75% 6.95% March 17, 2035 Northern States Statutory Trust I September 2005 10,310 3-month SOFR plus 1.80% 7.01% September 15, 2035 Anchor Capital Trust III August 2005 5,000 3-month SOFR plus 1.55% 6.42% September 30, 2035 Great Lakes Statutory Trust II December 2005 6,186 3-month SOFR plus 1.40% 6.61% December 15, 2035 Home Federal Statutory September 2006 15,464 3-month SOFR plus 1.65% 6.86% September 15, 2036 Monroe Bancorp Capital July 2006 3,093 3-month SOFR plus 1.60% 7.16% October 7, 2036 Tower Capital Trust 3 December 2006 9,279 3-month SOFR plus 1.69% 6.97% March 1, 2037 Monroe Bancorp Statutory March 2007 5,155 3-month SOFR plus 1.60% 6.81% June 15, 2037 Great Lakes Statutory Trust III June 2007 8,248 3-month SOFR plus 1.70% 6.91% 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) September 30, December 31, Unfunded loan commitments $ 8,822,027 $ 8,912,587 Standby letters of credit (1) 197,379 192,237 (1) Notional amount, which represents the maximum amount of future funding requirements. The carrying value was $1.7 million at September 30, 2024 and $1.3 million at December 31, 2023.
Summary of Contractual Maturities of Other Borrowings	Contractual maturities of other borrowings at September 30, 2024 were as follows: (dollars in thousands) Due in 2024 $ 37,482 Due in 2025 20,165 Due in 2026 155,677 Due in 2027 4,207 Due in 2028 2,730 Thereafter 363,359 Unamortized debt issuance costs and other basis adjustments 14,434 Total $ 598,054

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2024
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 September 30, 2024 Balance at beginning of period $ (699,318) $ (88,986) $ (3,104) $ — $ (791,408) Other comprehensive income (loss) before 162,861 — 17,537 — 180,398 Amounts reclassified from AOCI to income (1) 57 3,537 3,660 — 7,254 Balance at end of period $ (536,400) $ (85,449) $ 18,093 $ — $ (603,756) Three Months Ended September 30, 2023 Balance at beginning of period $ (701,393) $ (103,144) $ (4,096) $ — $ (808,633) Other comprehensive income (loss) before (156,660) — (11,546) — (168,206) Amounts reclassified from AOCI to income (1) 178 4,193 3,653 — 8,024 Balance at end of period $ (857,875) $ (98,951) $ (11,989) $ — $ (968,815) Nine Months Ended September 30, 2024 Balance at beginning of period $ (652,518) $ (95,472) $ 9,181 $ — $ (738,809) Other comprehensive income (loss) before 116,051 — (1,883) — 114,168 Amounts reclassified from AOCI to income (1) 67 10,023 10,795 — 20,885 Balance at end of period $ (536,400) $ (85,449) $ 18,093 $ — $ (603,756) Nine Months Ended September 30, 2023 Balance at beginning of period $ (642,346) $ (112,664) $ (31,549) $ 137 $ (786,422) Other comprehensive income (loss) before (219,562) 1,325 34,279 — (183,958) Amounts reclassified from AOCI to income (1) 4,033 12,388 (14,719) (137) 1,565 Balance at end of period $ (857,875) $ (98,951) $ (11,989) $ — $ (968,815) (1) See table below for details about reclassifications to income.
Schedule of Reclassifications out of AOCI	The following table summarizes the amounts reclassified out of each component of AOCI for the three months ended September 30, 2024 and 2023: Three Months Ended (dollars in thousands) 2024 2023 Details about AOCI Components Amount Reclassified Affected Line Item in the Unrealized gains and losses on $ (76) $ (241) Debt securities gains (losses), net 19 63 Income tax (expense) benefit $ (57) $ (178) Net income Amortization of unrealized losses on $ (4,740) $ (5,623) Interest income (expense) 1,203 1,430 Income tax (expense) benefit $ (3,537) $ (4,193) Net income Gains and losses on hedges $ (4,936) $ (4,927) Interest income (expense) 1,276 1,274 Income tax (expense) benefit $ (3,660) $ (3,653) Net income Total reclassifications for the period $ (7,254) $ (8,024) Net income The following table summarizes the amounts reclassified out of each component of AOCI for the nine months ended September 30, 2024 and 2023: Nine Months Ended (dollars in thousands) 2024 2023 Details about AOCI Components Amount Reclassified Affected Line Item in the Unrealized gains and losses on $ (90) $ (5,440) Debt securities gains (losses), net 23 1,407 Income tax (expense) benefit $ (67) $ (4,033) Net income Amortization of unrealized losses on $ (13,434) $ (16,574) Interest income (expense) 3,411 4,186 Income tax (expense) benefit $ (10,023) $ (12,388) Net income Gains and losses on hedges $ (14,560) $ 19,893 Interest income (expense) 3,765 (5,174) Income tax (expense) benefit $ (10,795) $ 14,719 Net income Amortization of defined benefit Actuarial gains (losses) $ — $ 182 Salaries and employee benefits — (45) Income tax (expense) benefit $ — $ 137 Net income Total reclassifications for the period $ (20,885) $ (1,565) Net income

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Summary of Differences in Taxes from Continuing Operations Computed at Statutory Rate	The 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 Nine Months Ended (dollars in thousands) 2024 2023 2024 2023 Provision at statutory rate of 21% $ 38,867 $ 40,358 $ 103,810 $ 122,352 Tax-exempt income: Tax-exempt interest (4,871) (4,625) (14,856) (13,716) Section 291/265 interest disallowance 927 675 2,768 1,593 Company-owned life insurance income (1,089) (743) (2,961) (2,315) Tax-exempt income (5,033) (4,693) (15,049) (14,438) State income taxes 7,485 8,163 18,965 24,856 Interim period effective rate adjustment 1,096 116 1,969 (607) Tax credit investments - federal (3,619) (2,071) (9,780) (7,122) Officer compensation limitation 765 1,040 3,021 3,120 Non-deductible FDIC premiums 2,462 1,949 6,241 6,096 Other, net (743) (558) (159) (1,139) Income tax expense $ 41,280 $ 44,304 $ 109,018 $ 133,118 Effective tax rate 22.3 % 23.1 % 22.1 % 22.9 %

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Interest Rate Derivatives	The following table summarizes Old National’s derivatives designated as hedges: September 30, 2024 December 31, 2023 Fair Value Fair Value (dollars in thousands) Notional Assets (1) Liabilities (2) Notional Assets (1) Liabilities (2) Cash flow hedges Interest rate swaps, collars, and floors on loan $ 1,800,000 $ 18,627 $ 3,876 $ 1,600,000 $ 10,472 $ 6,014 Interest rate swaps on borrowings (3) 150,000 — — 150,000 — — Fair value hedges Interest rate swaps on investment securities (3) 998,107 — — 998,107 — — Interest rate swaps on borrowings (3) 1,100,000 7,690 — 900,000 — — Total $ 26,317 $ 3,876 $ 10,472 $ 6,014 (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.
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 September 30, 2024 Interest rate contracts Interest income/(expense) $ 24,495 Fixed-rate debt Interest income/(expense) $ (24,645) Interest rate contracts Interest income/(expense) (44,845) Fixed-rate Interest income/(expense) 45,167 Total $ (20,350) $ 20,522 Three Months Ended Interest rate contracts Interest income/(expense) $ (9,553) Fixed-rate debt Interest income/(expense) $ 9,566 Interest rate contracts Interest income/(expense) 45,537 Fixed-rate Interest income/(expense) (46,055) Total $ 35,984 $ (36,489) Nine Months Ended Interest rate contracts Interest income/(expense) $ 10,207 Fixed-rate debt Interest income/(expense) $ (10,246) Interest rate contracts Interest income/(expense) (16,161) Fixed-rate Interest income/(expense) 16,454 Total $ (5,954) $ 6,208 Nine Months Ended Interest rate contracts Interest income/(expense) $ (18,500) Fixed-rate debt Interest income/(expense) $ 18,303 Interest rate contracts Interest income/(expense) 7,268 Fixed-rate Interest income/(expense) (7,671) Total $ (11,232) $ 10,632 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) 2024 2023 2024 2023 Derivatives in Location of Gain or Gain (Loss) Gain (Loss) Interest rate contracts Interest income/(expense) $ 23,654 $ (15,574) $ (5,970) $ (5,960) Nine Months Ended Nine Months Ended 2024 2023 2024 2023 Derivatives in Location of Gain or Gain (Loss) Gain (Loss) Interest rate contracts Interest income/(expense) $ (2,540) $ 4,302 $ (17,661) $ 17,481 The effect of derivatives not designated as hedging instruments on the consolidated statements of income were as follows: Three Months Ended (dollars in thousands) 2024 2023 Derivatives Not Designated as Location of Gain or (Loss) Gain (Loss) Interest rate contracts (1) Other income/(expense) $ (89) $ 426 Mortgage contracts Mortgage banking revenue 114 391 Foreign currency contracts Other income/(expense) (27) (3) Total $ (2) $ 814 Nine Months Ended 2024 2023 Derivatives Not Designated as Location of Gain or (Loss) Gain (Loss) Interest rate contracts (1) Other income/(expense) $ 319 $ 1,125 Mortgage contracts Mortgage banking revenue 158 760 Foreign currency contracts Other income/(expense) (108) (16) Total $ 369 $ 1,869 (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: September 30, 2024 December 31, 2023 Fair Value Fair Value (dollars in thousands) Notional Assets (1) Liabilities (2) Notional Assets (1) Liabilities (2) Interest rate lock commitments $ 110,582 $ 483 $ — $ 25,151 $ 291 $ — Forward mortgage loan contracts 154,287 — 19 39,529 — 566 Customer interest rate swaps 6,246,316 60,609 147,190 5,954,216 33,182 228,750 Counterparty interest rate swaps (3) 6,246,316 76,075 60,896 5,954,216 121,969 33,346 Customer foreign currency contracts 7,221 74 24 12,455 320 59 Counterparty foreign currency contracts 7,130 28 37 12,308 68 181 Total $ 137,269 $ 208,166 $ 155,830 $ 262,902 (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.
Schedule of Offsetting Assets	The following table presents the fair value of the Company’s derivatives and offsetting positions: September 30, 2024 December 31, 2023 (dollars in thousands) Assets Liabilities Assets Liabilities Gross amounts recognized $ 163,586 $ 212,042 $ 166,302 $ 268,916 Less: amounts offset in the Consolidated Balance Sheet — — — — Net amount presented in the Consolidated Balance Sheet 163,586 212,042 166,302 268,916 Gross amounts not offset in the Consolidated Balance Sheet Offsetting derivative positions (64,772) (64,772) (39,360) (39,360) Cash collateral pledged — (35,589) — (97,840) Net credit exposure $ 98,814 $ 111,681 $ 126,942 $ 131,716
Schedule of Offsetting Liabilities	The following table presents the fair value of the Company’s derivatives and offsetting positions: September 30, 2024 December 31, 2023 (dollars in thousands) Assets Liabilities Assets Liabilities Gross amounts recognized $ 163,586 $ 212,042 $ 166,302 $ 268,916 Less: amounts offset in the Consolidated Balance Sheet — — — — Net amount presented in the Consolidated Balance Sheet 163,586 212,042 166,302 268,916 Gross amounts not offset in the Consolidated Balance Sheet Offsetting derivative positions (64,772) (64,772) (39,360) (39,360) Cash collateral pledged — (35,589) — (97,840) Net credit exposure $ 98,814 $ 111,681 $ 126,942 $ 131,716

Commitments, Contingencies, a_2

Commitments, Contingencies, and Financial Guarantees (Tables)	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Summary of Loan Commitments	The following table summarizes Old National’s other borrowings: (dollars in thousands) September 30, December 31, Old National Bancorp: Subordinated debentures (fixed rate 5.88%) maturing September 2026 $ 150,000 $ 150,000 Subordinated debentures (fixed rate 5.25%) maturing June 2030 30,000 — Junior subordinated debentures (rates of 6.42% to 9.09%) maturing July 2031 to September 2037 136,643 136,643 Senior unsecured notes (fixed rate 4.13%) matured August 2024 — 175,000 Unamortized debt issuance costs related to senior unsecured notes — (91) Other basis adjustments 14,338 18,207 Old National Bank: Finance lease liabilities 33,598 20,955 Subordinated debentures (3-month SOFR plus 4.618%; variable rate 9.87%) 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 186,020 154,284 Other (1) 35,455 97,872 Total other borrowings $ 598,054 $ 764,870 (1) Includes overnight borrowings to collateralize certain derivative positions totaling $35.4 million at September 30, 2024 and $97.6 million at December 31, 2023. The following table summarizes the terms of our outstanding junior subordinated debentures at September 30, 2024: (dollars in thousands) Rate at September 30, Name of Trust Issuance Date Issuance Rate Maturity Date Bridgeview Statutory Trust I July 2001 $ 15,464 3-month SOFR plus 3.58% 9.09% July 31, 2031 Bridgeview Capital Trust II December 2002 15,464 3-month SOFR plus 3.35% 8.91% 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 SOFR plus 1.75% 6.95% March 17, 2035 Northern States Statutory Trust I September 2005 10,310 3-month SOFR plus 1.80% 7.01% September 15, 2035 Anchor Capital Trust III August 2005 5,000 3-month SOFR plus 1.55% 6.42% September 30, 2035 Great Lakes Statutory Trust II December 2005 6,186 3-month SOFR plus 1.40% 6.61% December 15, 2035 Home Federal Statutory September 2006 15,464 3-month SOFR plus 1.65% 6.86% September 15, 2036 Monroe Bancorp Capital July 2006 3,093 3-month SOFR plus 1.60% 7.16% October 7, 2036 Tower Capital Trust 3 December 2006 9,279 3-month SOFR plus 1.69% 6.97% March 1, 2037 Monroe Bancorp Statutory March 2007 5,155 3-month SOFR plus 1.60% 6.81% June 15, 2037 Great Lakes Statutory Trust III June 2007 8,248 3-month SOFR plus 1.70% 6.91% 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) September 30, December 31, Unfunded loan commitments $ 8,822,027 $ 8,912,587 Standby letters of credit (1) 197,379 192,237 (1) Notional amount, which represents the maximum amount of future funding requirements. The carrying value was $1.7 million at September 30, 2024 and $1.3 million at December 31, 2023.

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2024
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 September 30, 2024 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Equity securities $ 89,249 $ 89,249 $ — $ — Investment securities available-for-sale: U.S. Treasury 210,278 210,278 — — U.S. government-sponsored entities and agencies 1,294,278 — 1,294,278 — Mortgage-backed securities - Agency 5,101,056 — 5,101,056 — States and political subdivisions 511,565 — 511,565 — Pooled trust preferred securities 11,157 — 11,157 — Other securities 304,106 — 304,106 — Loans held-for-sale 62,376 — 62,376 — Derivative assets 163,586 — 163,586 — Financial Liabilities Derivative liabilities 212,042 — 212,042 — Fair Value Measurements at December 31, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Equity securities $ 80,372 $ 80,372 $ — $ — Investment securities available-for-sale: U.S. Treasury 396,733 396,733 — — U.S. government-sponsored entities and agencies 1,231,264 — 1,231,264 — Mortgage-backed securities - Agency 4,216,560 — 4,216,560 — States and political subdivisions 535,260 — 535,260 — Pooled trust preferred securities 11,337 — 11,337 — Other securities 321,901 — 321,901 — Loans held-for-sale 32,006 — 32,006 — Derivative assets 166,302 — 166,302 — Financial Liabilities Derivative liabilities 268,916 — 268,916 —
Schedule of Assets Measured at Fair Value on a Non-Recurring Basis	Assets measured at fair value at September 30, 2024 on a non-recurring basis are summarized below: Fair Value Measurements at September 30, 2024 Using (dollars in thousands) Carrying Quoted Prices in Significant Significant Collateral Dependent Loans: Commercial loans $ 32,051 $ — $ — $ 32,051 Commercial real estate loans 147,158 — — 147,158 Foreclosed Assets: Commercial 1,075 — — 1,075 Residential 244 — — 244 Assets measured at fair value at December 31, 2023 on a non-recurring basis are summarized below: Fair Value Measurements at December 31, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Collateral Dependent Loans: Commercial loans $ 11,017 $ — $ — $ 11,017 Commercial real estate loans 95,457 — — 95,457 Foreclosed Assets: Commercial real estate 1,669 — — 1,669
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) September 30, 2024 Collateral Dependent Loans Commercial loans $ 32,051 Discounted Discount for type of property, 9% - 50% (26%) cash flow age of appraisal, and current status Commercial real estate loans 147,158 Discounted Discount for type of property, 0% - 32% (15%) cash flow age of appraisal, and current status Foreclosed Assets Commercial real estate 1,075 Fair value of Discount for type of property, 28% - 56% (32%) collateral age of appraisal, and current status Residential (2) 244 Fair value of Discount for type of property, 24% collateral age of appraisal, and current status December 31, 2023 Collateral Dependent Loans Commercial loans $ 11,017 Discounted Discount for type of property, 5% - 37% (27%) cash flow age of appraisal, and current status Commercial real estate loans 95,457 Discounted Discount for type of property, 2% - 38% (16%) cash flow age of appraisal, and current status Foreclosed Assets Commercial real estate 1,669 Fair value of Discount for type of property, 4% - 8% (4%) collateral age of appraisal, and current status (1) Unobservable inputs were weighted by the relative fair value of the instruments. (2) There was only one foreclosed residential real estate property at September 30, 2024 with write-downs during the nine months ended September 30, 2024, so no range or weighted average is reported.
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 Difference Contractual Principal September 30, 2024 Loans held-for-sale $ 62,376 $ 1,343 $ 61,033 December 31, 2023 Loans held-for-sale $ 32,006 $ 621 $ 31,385 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 September 30, 2024 Loans held-for-sale $ 809 $ 7 $ — $ 816 Three Months Ended September 30, 2023 Loans held-for-sale $ (327) $ 12 $ — $ (315) Nine Months Ended September 30, 2024 Loans held-for-sale $ 712 $ 13 $ (5) $ 720 Nine Months Ended September 30, 2023 Loans held-for-sale $ (151) $ 2 $ — $ (149)
Carrying Amounts and Estimated Fair Values of Financial Instruments, Not Carried at Fair Value	The carrying amounts and estimated fair values of financial instruments not carried at fair value were as follows: Fair Value Measurements at September 30, 2024 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Cash, due from banks, money market, $ 1,191,570 $ 1,191,570 $ — $ — Investment securities held-to-maturity: U.S. government-sponsored entities and agencies 831,160 — 700,473 — Mortgage-backed securities - Agency 984,770 — 854,316 — State and political subdivisions 1,153,413 — 1,049,266 — Loans, net: Commercial 10,269,767 — — 10,126,433 Commercial real estate 16,150,111 — — 15,781,629 Residential real estate 6,736,408 — — 6,170,208 Consumer credit 2,863,517 — — 2,888,346 Accrued interest receivable 225,624 1,161 49,628 174,835 Financial Liabilities Deposits: Noninterest-bearing demand deposits $ 9,429,285 $ 9,429,285 $ — $ — Checking, NOW, savings, and money market 24,260,467 24,260,467 — — Time deposits 7,155,994 — 7,112,642 — Federal funds purchased and interbank borrowings 135,263 135,263 — — Securities sold under agreements to repurchase 244,626 244,626 — — FHLB advances 4,471,153 — 4,502,601 — Other borrowings 598,054 — 599,539 — Accrued interest payable 65,836 — 65,836 — Standby letters of credit 1,727 — — 1,727 Off-Balance Sheet Financial Instruments Commitments to extend credit $ — $ — $ — $ 4,105 Fair Value Measurements at December 31, 2023 Using (dollars in thousands) Carrying Value Quoted Prices in Significant Significant Financial Assets Cash, due from banks, money market, $ 1,175,058 $ 1,175,058 $ — $ — Investment securities held-to-maturity: U.S. government-sponsored entities and agencies 825,953 — 671,126 — Mortgage-backed securities - Agency 1,029,131 — 881,994 — State and political subdivisions 1,158,409 — 1,048,068 — Loans, net: Commercial 9,392,267 — — 9,258,193 Commercial real estate 13,984,273 — — 13,640,868 Residential real estate 6,678,606 — — 5,579,999 Consumer credit 2,629,171 — — 2,555,121 Accrued interest receivable 225,159 859 54,465 169,835 Financial Liabilities Deposits: Noninterest-bearing demand deposits $ 9,664,247 $ 9,664,247 $ — $ — Checking, NOW, savings, and money market 21,991,789 21,991,789 — — Time deposits 5,579,144 — 5,552,538 — Federal funds purchased and interbank borrowings 390 390 — — Securities sold under agreements to repurchase 285,206 285,206 — — FHLB advances 4,280,681 — 4,090,954 — Other borrowings 764,870 — 755,592 — Accrued interest payable 57,094 — 57,094 — Standby letters of credit 1,318 — — 1,318 Off-Balance Sheet Financial Instruments Commitments to extend credit $ — $ — $ — $ 3,839

Acquisition and Divestiture A_3

Acquisition and Divestiture Activity - Additional Information (Details) $ in Thousands		3 Months Ended	9 Months Ended
	Apr. 01, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)
Business Acquisition [Line Items]
Purchase price of loans at acquisition	$ 610,691
Par value of acquired loans at acquisition	679,302
Allowance for credit losses at acquisition	$ 26,725
CapStar Financial Holdings, Inc.
Business Acquisition [Line Items]
Shares exchange ratio	1.155
Other intangible assets	$ 46,125
Allowance for credit losses at acquisition	$ 26,700
Transaction costs, expensed		$ 6,900	$ 29,200
CapStar Financial Holdings, Inc. | Core deposit
Business Acquisition [Line Items]
Estimated useful lives	10 years

Acquisition and Divestiture A_4

Acquisition and Divestiture Activity - Total Consideration (Details) - USD ($) $ / shares in Units, shares in Thousands		3 Months Ended	9 Months Ended
	Apr. 01, 2024	Jun. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Assets
Goodwill		$ 2,170,709,000	$ 2,176,999,000	$ 1,998,716,000	$ 1,998,716,000	$ 1,998,716,000	$ 1,998,716,000
Fair value of consideration
Issuance of common stock (in shares)		417,598,000	$ 417,598,000	$ 0
Common Stock
Fair value of consideration
Issuance of common stock (in shares)	$ 24,014,000	$ 24,014,000
Share price (in dollars per share)	$ 17.41
CapStar Financial Holdings, Inc.
Assets
Cash and cash equivalents	$ 177,791,000
Investment securities	342,490,000
FHLB/Federal Reserve Bank stock	14,426,000
Loans held-for-sale	21,159,000
Loans, net of allowance for credit losses	2,120,627,000
Premises and equipment	22,481,000
Goodwill	178,283,000
Other intangible assets	46,125,000
Company-owned life insurance	91,475,000
Other assets	94,312,000
Total assets	3,109,169,000
Liabilities
Deposits	2,560,124,000
Federal Home Loan Bank advances	75,000,000
Other borrowings	30,000,000
Accrued expenses and other liabilities	26,447,000
Total liabilities	2,691,571,000
Fair value of consideration
Total consideration	$ 417,598,000
CapStar Financial Holdings, Inc. | Common Stock
Fair value of consideration
Issuance of common stock shares for acquisitions of business (in shares)	417,598

Net Income Per Common Share (De

Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net income	$ 143,802	$ 121,229	$ 120,284	$ 147,876	$ 155,036	$ 146,600	$ 385,315	$ 449,512
Preferred dividends	(4,034)			(4,034)			(12,101)	(12,101)
Net income applicable to common shareholders	$ 139,768			$ 143,842			$ 373,214	$ 437,411
Weighted average common shares outstanding:
Weighted average common shares outstanding (basic) (in shares)	315,622			290,648			307,426	290,763
Effect of dilutive securities:
Restricted stock (in shares)	1,709			1,069			1,179	1,045
Stock appreciation rights (in shares)	0			0			0	1
Weighted average diluted shares outstanding (in shares)	317,331			291,717			308,605	291,809
Basic Net Income Per Common Share (in dollars per share)	$ 0.44			$ 0.49			$ 1.21	$ 1.50
Diluted Net Income Per Common Share (in dollars per share)	$ 0.44			$ 0.49			$ 1.21	$ 1.50

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Fair Value of Available-for-Sale Investment Securities Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Available-for-Sale
Total	$ 8,233,232	$ 7,684,889
Unrealized Gains	22,804	4,607
Unrealized Losses	(737,752)	(874,143)
Basis adjustments	(85,844)	(102,298)
Fair Value	7,432,440	6,713,055
U.S. Treasury
Available-for-Sale
Total	260,893	449,817
Unrealized Gains	157	154
Unrealized Losses	(13,076)	(11,941)
Basis adjustments	(37,696)	(41,297)
Fair Value	210,278	396,733
U.S. government-sponsored entities and agencies
Available-for-Sale
Total	1,506,552	1,487,879
Unrealized Gains	227	33
Unrealized Losses	(160,832)	(192,717)
Basis adjustments	(51,669)	(63,931)
Fair Value	1,294,278	1,231,264
Mortgage-backed securities
Available-for-Sale
Total	5,608,308	4,835,319
Unrealized Gains	20,435	3,093
Unrealized Losses	(527,687)	(621,852)
Basis adjustments	0	0
Fair Value	5,101,056	4,216,560
States and political subdivisions
Available-for-Sale
Total	527,887	554,509
Unrealized Gains	1,199	878
Unrealized Losses	(21,042)	(23,057)
Basis adjustments	3,521	2,930
Fair Value	511,565	535,260
Pooled trust preferred securities
Available-for-Sale
Total	13,805	13,797
Unrealized Gains	0	0
Unrealized Losses	(2,648)	(2,460)
Basis adjustments	0	0
Fair Value	11,157	11,337
Other securities
Available-for-Sale
Total	315,787	343,568
Unrealized Gains	786	449
Unrealized Losses	(12,467)	(22,116)
Basis adjustments	0	0
Fair Value	$ 304,106	$ 321,901

Investment Securities - Amort_2

Investment Securities - Amortized Cost and Fair Value Held-to-Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Held-to-Maturity
Allowance for securities held-to-maturity	$ (150)	$ (150)
Total held-to-maturity securities	2,969,343	3,013,493
Unrealized Gains	1,680	1,800
Unrealized Losses	(366,968)	(414,105)
Fair Value	2,604,055	2,601,188
U.S. government-sponsored entities and agencies
Held-to-Maturity
Amortized Cost	831,160	825,953
Unrealized Gains	0	0
Unrealized Losses	(130,687)	(154,827)
Fair Value	700,473	671,126
Mortgage-backed securities
Held-to-Maturity
Amortized Cost	984,770	1,029,131
Unrealized Gains	0	0
Unrealized Losses	(130,454)	(147,137)
Fair Value	854,316	881,994
States and political subdivisions
Held-to-Maturity
Amortized Cost	1,153,563	1,158,559
Unrealized Gains	1,680	1,800
Unrealized Losses	(105,827)	(112,141)
Fair Value	$ 1,049,416	$ 1,048,218

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Proceeds from Sale, Maturity and Collection of Investments [Abstract]
Proceeds	$ 22,545	$ 28,531	$ 370,870	$ 111,419
Realized gains	90	54	98	1,002
Realized losses	$ (166)	$ (295)	$ (188)	$ (6,442)

Investment Securities - Expecte

Investment Securities - Expected Maturities of Investment Securities Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Available-for-sale, Amortized Cost
Within one year	$ 408,483
One to five years	2,841,655
Five to ten years	3,716,071
Beyond ten years	1,267,023
Total	8,233,232	$ 7,684,889
Available-for-sale, Fair Value
Within one year	409,578
One to five years	2,728,724
Five to ten years	3,257,518
Beyond ten years	1,036,620
Total	$ 7,432,440	6,713,055
Available-for-sale, Weighted Average Yield
Within one year	4.31%
One to five years	3.87%
Five to ten years	2.39%
Beyond ten years	2.66%
Total	3.04%
Held-to-Maturity, Amortized Cost
Within one year	$ 153
One to five years	164,752
Five to ten years	1,248,019
Beyond ten years	1,556,419
Total held-to-maturity securities	2,969,343	3,013,493
Held-to-Maturity, Fair Value
Within one year	146
One to five years	139,140
Five to ten years	1,115,473
Beyond ten years	1,349,296
Total	$ 2,604,055	$ 2,601,188
Held-to-Maturity, Weighted Average Yield
Within one year	2.20%
One to five years	2.56%
Five to ten years	2.65%
Beyond ten years	2.72%
Total	2.68%

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	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-Sale, Less than 12 months, Fair Value	$ 222,111	$ 224,979
Available-for-Sale, Less than 12 months, Unrealized Losses	(1,175)	(1,476)
Available-for-Sale, 12 months or longer, Fair Value	5,563,631	5,742,885
Available-for-Sale, 12 months or longer, Unrealized Losses	(736,577)	(872,667)
Available-for-Sale, Fair Value	5,785,742	5,967,864
Available-for-Sale, Unrealized Losses	(737,752)	(874,143)
U.S. Treasury
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-Sale, Less than 12 months, Fair Value	1,998	8,937
Available-for-Sale, Less than 12 months, Unrealized Losses	(4)	(42)
Available-for-Sale, 12 months or longer, Fair Value	193,148	191,027
Available-for-Sale, 12 months or longer, Unrealized Losses	(13,072)	(11,899)
Available-for-Sale, Fair Value	195,146	199,964
Available-for-Sale, Unrealized Losses	(13,076)	(11,941)
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	55,754	0
Available-for-Sale, Less than 12 months, Unrealized Losses	(114)	0
Available-for-Sale, 12 months or longer, Fair Value	1,209,200	1,189,314
Available-for-Sale, 12 months or longer, Unrealized Losses	(160,718)	(192,717)
Available-for-Sale, Fair Value	1,264,954	1,189,314
Available-for-Sale, Unrealized Losses	(160,832)	(192,717)
Mortgage-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-Sale, Less than 12 months, Fair Value	93,981	90,145
Available-for-Sale, Less than 12 months, Unrealized Losses	(786)	(710)
Available-for-Sale, 12 months or longer, Fair Value	3,633,891	3,835,552
Available-for-Sale, 12 months or longer, Unrealized Losses	(526,901)	(621,142)
Available-for-Sale, Fair Value	3,727,872	3,925,697
Available-for-Sale, Unrealized Losses	(527,687)	(621,852)
States and political subdivisions
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-Sale, Less than 12 months, Fair Value	22,970	86,865
Available-for-Sale, Less than 12 months, Unrealized Losses	(114)	(495)
Available-for-Sale, 12 months or longer, Fair Value	306,635	259,767
Available-for-Sale, 12 months or longer, Unrealized Losses	(20,928)	(22,562)
Available-for-Sale, Fair Value	329,605	346,632
Available-for-Sale, Unrealized Losses	(21,042)	(23,057)
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	11,157	11,337
Available-for-Sale, 12 months or longer, Unrealized Losses	(2,648)	(2,460)
Available-for-Sale, Fair Value	11,157	11,337
Available-for-Sale, Unrealized Losses	(2,648)	(2,460)
Other securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-Sale, Less than 12 months, Fair Value	47,408	39,032
Available-for-Sale, Less than 12 months, Unrealized Losses	(157)	(229)
Available-for-Sale, 12 months or longer, Fair Value	209,600	255,888
Available-for-Sale, 12 months or longer, Unrealized Losses	(12,310)	(21,887)
Available-for-Sale, Fair Value	257,008	294,920
Available-for-Sale, Unrealized Losses	$ (12,467)	$ (22,116)

Investment Securities - Held-to

Investment Securities - Held-to-Maturity with Unrecognized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value
Less than 12 months	$ 671	$ 0
12 months or longer	2,533,430	2,530,274
Total	2,534,101	2,530,274
Unrecognized Losses
Less than 12 months	(1)	0
12 months or longer	(366,967)	(414,105)
Total	(366,968)	(414,105)
U.S. government-sponsored entities and agencies
Fair Value
Less than 12 months	0	0
12 months or longer	700,473	671,126
Total	700,473	671,126
Unrecognized Losses
Less than 12 months	0	0
12 months or longer	(130,687)	(154,827)
Total	(130,687)	(154,827)
Mortgage-backed securities
Fair Value
Less than 12 months	0	0
12 months or longer	854,316	881,994
Total	854,316	881,994
Unrecognized Losses
Less than 12 months	0	0
12 months or longer	(130,454)	(147,137)
Total	(130,454)	(147,137)
States and political subdivisions
Fair Value
Less than 12 months	671	0
12 months or longer	978,641	977,154
Total	979,312	977,154
Unrecognized Losses
Less than 12 months	(1)	0
12 months or longer	(105,826)	(112,141)
Total	$ (105,827)	$ (112,141)

Investment Securities - Additio

Investment Securities - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) security	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) security	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Summary of Investment Holdings [Line Items]
Transferred from available-for-sale to held-for-maturity	$ 114,200,000		$ 114,200,000		$ 127,600,000
Allowance for credit losses for available-for-sale debt securities	$ 0		$ 0		$ 0
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest
Allowance for securities held-to-maturity	$ 150,000		$ 150,000		$ 150,000
Accrued interest receivable	$ 42,500,000		$ 42,500,000		50,300,000
Number of securities in security portfolio | security	3,013		3,013
Number of securities in unrealized loss position | security	2,452		2,452
Equity securities, at fair value	$ 89,249,000		$ 89,249,000		80,372,000
(Losses) gains on equity securities	1,500,000	$ (800,000)	1,400,000	$ (1,400,000)
Impairments on equity securities without readily determinable fair value			0	0
Downward adjustments 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	580,300,000		580,300,000		449,300,000
Other Assets | Partnership Interest
Summary of Investment Holdings [Line Items]
Equity securities without readily determinable fair value	292,600,000		292,600,000		252,200,000
Other Assets | Initiatives in Low-to-Moderate Income Neighborhoods
Summary of Investment Holdings [Line Items]
Equity securities without readily determinable fair value	$ 287,700,000		$ 287,700,000		$ 197,100,000

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Additional Information (Details)		3 Months Ended		9 Months Ended
	Apr. 01, 2024 USD ($)	Sep. 30, 2024 USD ($) portfolio segment	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) portfolio segment	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan participations		$ 3,400,000,000		$ 3,400,000,000
Loan participations sold		1,500,000,000		1,500,000,000
Loan participations retained		$ 1,900,000,000		$ 1,900,000,000
Number of loan portfolios | portfolio		4		4
Number of loan segments | segment		7		7
Allowance for credit losses at acquisition	$ 26,725,000
Provision for credit losses		$ 28,497,000	$ 19,068,000	$ 83,602,000	$ 47,292,000
Loan placed on nonaccrual when past due, number of days				90 days
Payment defaults		3,900,000	$ 0	$ 25,300,000	$ 0
Unfunded commitments on TDRs		0		0		$ 0
CapStar Financial Holdings, Inc.
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses at acquisition	$ 26,700,000
Provision for credit losses				15,300,000
Accrued interest receivable on loans		$ 174,800,000		$ 174,800,000		$ 169,800,000
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage of risk-based capital		241%		241%
Regulatory guideline limit		300%		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	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	$ 36,400,643		$ 36,400,643		$ 32,991,927
Allowance for credit losses on loans	(380,840)	$ (303,982)	(380,840)	$ (303,982)	(307,610)	$ (366,335)	$ (300,555)	$ (303,671)
Net loans	36,019,803		36,019,803		32,684,317
Taxable	561,428	474,387	1,594,411	1,334,658
Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0		0		0
Net loans	0		0		0
Portfolio Segment After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	36,400,643		36,400,643		32,991,927
Allowance for credit losses on loans	(380,840)		(380,840)		(307,610)
Net loans	36,019,803		36,019,803		32,684,317
Taxable			183,400		93,700
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	10,408,095		10,408,095		9,512,230
Allowance for credit losses on loans	(136,842)	(124,755)	(136,842)	(124,755)	(118,333)	(138,460)	(127,403)	(120,612)
Commercial | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	(224,732)		(224,732)		(232,764)
Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	10,183,363		10,183,363		9,279,466
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	16,356,216		16,356,216		14,140,629
Allowance for credit losses on loans	(204,899)	(144,975)	(204,899)	(144,975)	(155,099)	(189,911)	(136,897)	(138,244)
Commercial real estate | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	(175,628)		(175,628)		(169,058)
Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	16,180,588		16,180,588		13,971,571
BBCC
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses on loans	(2,692)	(2,709)	(2,692)	(2,709)	(2,887)	(2,897)	(2,776)	(2,431)
BBCC | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	400,360		400,360		401,822
BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	400,360		400,360		401,822
Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	6,757,896		6,757,896		6,699,443
Allowance for credit losses on loans	(21,488)	(20,780)	(21,488)	(20,780)	(20,837)	(23,135)	(20,421)	(21,916)
Residential real estate | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0		0		0
Residential real estate | Portfolio Segment After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	6,757,896		6,757,896		6,699,443
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	2,878,436		2,878,436		2,639,625
Consumer | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	(2,878,436)		(2,878,436)		(2,639,625)
Indirect
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,096,234		1,096,234		1,050,982
Allowance for credit losses on loans	(5,661)	(1,321)	(5,661)	(1,321)	(1,236)	(1,233)	(1,407)	(1,532)
Indirect | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,096,234		1,096,234		1,050,982
Indirect | Portfolio Segment After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,096,234		1,096,234		1,050,982
Direct
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	419,201		419,201		523,172
Allowance for credit losses on loans	(2,427)	(3,571)	(2,427)	(3,571)	(3,169)	(3,131)	(4,755)	(12,116)
Direct | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	419,201		419,201		523,172
Direct | Portfolio Segment After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	419,201		419,201		523,172
Home equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,363,001		1,363,001		1,065,471
Allowance for credit losses on loans	(6,831)	$ (5,871)	(6,831)	$ (5,871)	(6,049)	$ (7,568)	$ (6,896)	$ (6,820)
Home equity | Portfolio Segment Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,363,001		1,363,001		1,065,471
Home equity | Portfolio Segment After Reclassifications
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,363,001		1,363,001		1,065,471
Direct Finance Leases
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	$ 133,600		$ 133,600		$ 169,700

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 366,335	$ 300,555	$ 307,610	$ 303,671
Allowance Established for Acquired PCD Loans	2,803	0	26,725	0
Charge-offs	(18,965)	(22,750)	(50,026)	(55,261)
Recoveries	1,491	3,062	6,757	9,052
Provision for Loan Losses	29,176	23,115	89,774	46,520
Balance at End of Period	380,840	303,982	380,840	303,982
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	138,460	127,403	118,333	120,612
Allowance Established for Acquired PCD Loans	3,245	0	17,838	0
Charge-offs	(11,512)	(16,705)	(25,098)	(37,459)
Recoveries	308	1,616	1,104	3,713
Provision for Loan Losses	6,341	12,441	24,665	37,889
Balance at End of Period	136,842	124,755	136,842	124,755
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	189,911	136,897	155,099	138,244
Allowance Established for Acquired PCD Loans	(442)	0	8,041	0
Charge-offs	(2,799)	(2,291)	(12,541)	(5,938)
Recoveries	214	102	1,791	1,394
Provision for Loan Losses	18,015	10,267	52,509	11,275
Balance at End of Period	204,899	144,975	204,899	144,975
BBCC
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,897	2,776	2,887	2,431
Allowance Established for Acquired PCD Loans	0	0	0	0
Charge-offs	(676)	(1,049)	(1,687)	(1,171)
Recoveries	56	70	304	174
Provision for Loan Losses	415	912	1,188	1,275
Balance at End of Period	2,692	2,709	2,692	2,709
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	23,135	20,421	20,837	21,916
Allowance Established for Acquired PCD Loans	0	0	134	0
Charge-offs	0	(15)	0	(256)
Recoveries	64	28	845	153
Provision for Loan Losses	(1,711)	346	(328)	(1,033)
Balance at End of Period	21,488	20,780	21,488	20,780
Indirect
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	1,233	1,407	1,236	1,532
Allowance Established for Acquired PCD Loans	0	0	0	0
Charge-offs	(1,715)	(490)	(3,937)	(2,089)
Recoveries	290	325	957	1,349
Provision for Loan Losses	5,853	79	7,405	529
Balance at End of Period	5,661	1,321	5,661	1,321
Direct
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	3,131	4,755	3,169	12,116
Allowance Established for Acquired PCD Loans	0	0	59	0
Charge-offs	(2,137)	(2,180)	(6,449)	(8,018)
Recoveries	475	580	1,527	1,798
Provision for Loan Losses	958	416	4,121	(2,325)
Balance at End of Period	2,427	3,571	2,427	3,571
Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	7,568	6,896	6,049	6,820
Allowance Established for Acquired PCD Loans	0	0	653	0
Charge-offs	(126)	(20)	(314)	(330)
Recoveries	84	341	229	471
Provision for Loan Losses	(695)	(1,346)	214	(1,090)
Balance at End of Period	$ 6,831	$ 5,871	$ 6,831	$ 5,871

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 25,733	$ 37,007	$ 31,226	$ 32,188
Provision for credit losses on unfunded loan commitments acquired during the period	0	0	1,763	0
Provision (release) for credit losses on unfunded loan commitments	(679)	(4,047)	(7,935)	772
Balance at end of period	$ 25,054	$ 32,960	$ 25,054	$ 32,960

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 36,400,643		$ 36,400,643		$ 32,991,927
2024	1,441	$ 593	1,570	$ 603
2023	9,546	5,360	13,605	9,140
2022	1,616	12,829	13,317	26,689
2021	947	1,868	5,279	3,034
2020	1,105	280	1,593	7,937
Prior	3,167	736	11,449	4,463
Revolving	1,143	1,084	3,213	3,395
Total	18,965	22,750	50,026	55,261
Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	36,400,643		36,400,643		32,991,927
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	10,408,095		10,408,095		9,512,230
Total	11,512	16,705	25,098	37,459
Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	1,603,172		1,603,172		1,873,630
Originated one year before current year	1,657,936		1,657,936		1,719,159
Originated two years before current year	1,412,873		1,412,873		1,039,832
Originated three years before current year	790,476		790,476		600,282
Originated four years before current year	513,069		513,069		489,693
Originated more than five years before current fiscal year	678,651		678,651		583,939
Revolving	2,792,701		2,792,701		2,214,453
Revolving to Term	734,485		734,485		758,478
Total loans	10,183,363		10,183,363		9,279,466
2024	1,234	0	1,234	0
2023	8,031	4,154	10,389	6,254
2022	633	12,271	10,263	23,432
2021	297	0	719	120
2020	840	0	891	6,789
Prior	55	63	625	302
Revolving	422	217	977	562
Total	11,512	16,705	25,098	37,459
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	16,356,216		16,356,216		14,140,629
Total	2,799	2,291	12,541	5,938
Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	1,766,633		1,766,633		2,279,487
Originated one year before current year	2,663,562		2,663,562		3,664,419
Originated two years before current year	4,241,021		4,241,021		2,695,350
Originated three years before current year	2,512,924		2,512,924		1,636,367
Originated four years before current year	1,524,517		1,524,517		1,163,055
Originated more than five years before current fiscal year	2,209,865		2,209,865		1,350,392
Revolving	148,824		148,824		107,225
Revolving to Term	1,113,242		1,113,242		1,075,276
Total loans	16,180,588		16,180,588		13,971,571
2024	0	0	0	0
2023	140	0	140	54
2022	61	0	84	735
2021	44	1,744	2,688	2,144
2020	0	0	0	0
Prior	2,554	547	9,629	3,005
Revolving	0	0	0	0
Total	2,799	2,291	12,541	5,938
BBCC
Financing Receivable, Credit Quality Indicator [Line Items]
Total	676	1,049	1,687	1,171
BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	60,655		60,655		81,840
Originated one year before current year	87,413		87,413		65,503
Originated two years before current year	60,956		60,956		46,152
Originated three years before current year	38,342		38,342		39,072
Originated four years before current year	32,467		32,467		28,622
Originated more than five years before current fiscal year	32,540		32,540		21,170
Revolving	66,444		66,444		70,966
Revolving to Term	21,543		21,543		48,497
Total loans	400,360		400,360		401,822
2024	0	499	0	499
2023	481	501	1,086	548
2022	164	49	393	77
2021	21	0	56	47
2020	0	0	112	0
Prior	10	0	40	0
Revolving	0	0	0	0
Total	676	1,049	1,687	1,171
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	371,456		371,456		453,859
Originated one year before current year	492,735		492,735		1,513,234
Originated two years before current year	1,480,495		1,480,495		1,840,082
Originated three years before current year	1,701,895		1,701,895		1,708,506
Originated four years before current year	1,610,184		1,610,184		434,861
Originated more than five years before current fiscal year	1,100,794		1,100,794		748,622
Revolving	60		60		0
Revolving to Term	277		277		279
Total loans	6,757,896		6,757,896		6,699,443
2024	0	0	0	0
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
Prior	0	15	0	256
Revolving	0	0	0	0
Total	0	15	0	256
Residential real estate | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	6,757,896		6,757,896		6,699,443
Residential real estate | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	371,299		371,299		453,743
Originated one year before current year	488,590		488,590		1,508,671
Originated two years before current year	1,469,840		1,469,840		1,836,078
Originated three years before current year	1,696,514		1,696,514		1,705,131
Originated four years before current year	1,605,901		1,605,901		430,783
Originated more than five years before current fiscal year	1,067,863		1,067,863		722,987
Revolving	60		60		0
Revolving to Term	277		277		279
Total loans	6,700,344		6,700,344		6,657,672
Residential real estate | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	157		157		116
Originated one year before current year	4,145		4,145		4,563
Originated two years before current year	10,655		10,655		4,004
Originated three years before current year	5,381		5,381		3,375
Originated four years before current year	4,283		4,283		4,078
Originated more than five years before current fiscal year	32,931		32,931		25,635
Revolving	0		0		0
Revolving to Term	0		0		0
Total loans	57,552		57,552		41,771
Indirect
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	348,669		348,669		393,741
Originated one year before current year	310,701		310,701		357,294
Originated two years before current year	258,639		258,639		163,942
Originated three years before current year	109,172		109,172		83,418
Originated four years before current year	47,965		47,965		38,285
Originated more than five years before current fiscal year	21,088		21,088		14,106
Revolving	0		0		0
Revolving to Term	0		0		196
Total loans	1,096,234		1,096,234		1,050,982
2024	199	75	253	85
2023	797	276	1,698	954
2022	360	86	1,209	640
2021	110	12	431	153
2020	41	10	80	137
Prior	208	31	266	120
Revolving	0	0	0	0
Total	1,715	490	3,937	2,089
Indirect | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,096,234		1,096,234		1,050,982
Indirect | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	348,367		348,367		393,369
Originated one year before current year	309,592		309,592		355,822
Originated two years before current year	257,064		257,064		162,735
Originated three years before current year	107,785		107,785		82,871
Originated four years before current year	47,552		47,552		37,967
Originated more than five years before current fiscal year	20,760		20,760		13,815
Revolving	0		0		0
Revolving to Term	0		0		196
Total loans	1,091,120		1,091,120		1,046,775
Indirect | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	302		302		372
Originated one year before current year	1,109		1,109		1,472
Originated two years before current year	1,575		1,575		1,207
Originated three years before current year	1,387		1,387		547
Originated four years before current year	413		413		318
Originated more than five years before current fiscal year	328		328		291
Revolving	0		0		0
Revolving to Term	0		0		0
Total loans	5,114		5,114		4,207
Direct
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	56,368		56,368		109,439
Originated one year before current year	68,410		68,410		90,841
Originated two years before current year	59,468		59,468		93,008
Originated three years before current year	53,983		53,983		48,947
Originated four years before current year	22,464		22,464		29,869
Originated more than five years before current fiscal year	58,559		58,559		71,001
Revolving	97,354		97,354		75,204
Revolving to Term	2,595		2,595		4,863
Total loans	419,201		419,201		523,172
2024	8	19	83	19
2023	97	429	292	1,330
2022	398	423	1,368	1,805
2021	475	112	1,351	570
2020	224	270	510	1,011
Prior	214	60	609	450
Revolving	721	867	2,236	2,833
Total	2,137	2,180	6,449	8,018
Direct | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	419,201		419,201		523,172
Direct | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	56,302		56,302		109,372
Originated one year before current year	68,103		68,103		90,310
Originated two years before current year	58,794		58,794		92,491
Originated three years before current year	53,593		53,593		48,387
Originated four years before current year	21,871		21,871		29,659
Originated more than five years before current fiscal year	56,853		56,853		67,129
Revolving	97,352		97,352		75,080
Revolving to Term	2,509		2,509		4,852
Total loans	415,377		415,377		517,280
Direct | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	66		66		67
Originated one year before current year	307		307		531
Originated two years before current year	674		674		517
Originated three years before current year	390		390		560
Originated four years before current year	593		593		210
Originated more than five years before current fiscal year	1,706		1,706		3,872
Revolving	2		2		124
Revolving to Term	86		86		11
Total loans	3,824		3,824		5,892
Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0		0		290
Originated one year before current year	0		0		474
Originated two years before current year	1,573		1,573		488
Originated three years before current year	349		349		544
Originated four years before current year	1,379		1,379		1,420
Originated more than five years before current fiscal year	17,142		17,142		8,810
Revolving	1,303,478		1,303,478		1,022,233
Revolving to Term	39,080		39,080		31,212
Total loans	1,363,001		1,363,001		1,065,471
2024	0	0	0	0
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	34	0
2020	0	0	0	0
Prior	126	20	280	330
Revolving	0	0	0	0
Total	126	$ 20	314	$ 330
Home equity | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,363,001		1,363,001		1,065,471
Home equity | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0		0		290
Originated one year before current year	0		0		164
Originated two years before current year	262		262		160
Originated three years before current year	203		203		140
Originated four years before current year	1,135		1,135		679
Originated more than five years before current fiscal year	11,759		11,759		4,483
Revolving	1,300,266		1,300,266		1,019,389
Revolving to Term	28,857		28,857		23,918
Total loans	1,342,482		1,342,482		1,049,223
Home equity | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0		0		0
Originated one year before current year	0		0		310
Originated two years before current year	1,311		1,311		328
Originated three years before current year	146		146		404
Originated four years before current year	244		244		741
Originated more than five years before current fiscal year	5,383		5,383		4,327
Revolving	3,212		3,212		2,844
Revolving to Term	10,223		10,223		7,294
Total loans	20,519		20,519		16,248
Pass | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	1,555,665		1,555,665		1,826,289
Originated one year before current year	1,519,627		1,519,627		1,573,669
Originated two years before current year	1,243,415		1,243,415		985,964
Originated three years before current year	734,457		734,457		520,883
Originated four years before current year	467,036		467,036		450,911
Originated more than five years before current fiscal year	636,137		636,137		495,979
Revolving	2,560,086		2,560,086		2,051,985
Revolving to Term	657,716		657,716		651,953
Total loans	9,374,139		9,374,139		8,557,633
Pass | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	1,649,355		1,649,355		2,177,841
Originated one year before current year	2,584,786		2,584,786		3,515,702
Originated two years before current year	3,882,068		3,882,068		2,563,638
Originated three years before current year	2,267,541		2,267,541		1,576,044
Originated four years before current year	1,407,050		1,407,050		1,010,351
Originated more than five years before current fiscal year	1,877,393		1,877,393		1,161,119
Revolving	143,314		143,314		103,332
Revolving to Term	929,671		929,671		960,386
Total loans	14,741,178		14,741,178		13,068,413
Pass | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	60,158		60,158		81,102
Originated one year before current year	83,681		83,681		64,583
Originated two years before current year	58,701		58,701		44,307
Originated three years before current year	36,774		36,774		38,086
Originated four years before current year	31,632		31,632		27,557
Originated more than five years before current fiscal year	30,934		30,934		19,028
Revolving	61,932		61,932		68,807
Revolving to Term	16,809		16,809		33,361
Total loans	380,621		380,621		376,831
Special Mention | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	34,491		34,491		20,038
Originated one year before current year	62,344		62,344		90,031
Originated two years before current year	43,253		43,253		19,953
Originated three years before current year	14,913		14,913		36,906
Originated four years before current year	18,003		18,003		25,756
Originated more than five years before current fiscal year	12,073		12,073		47,357
Revolving	120,436		120,436		89,765
Revolving to Term	25,235		25,235		44,348
Total loans	330,748		330,748		374,154
Special Mention | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	47,435		47,435		69,648
Originated one year before current year	35,196		35,196		69,946
Originated two years before current year	105,531		105,531		68,708
Originated three years before current year	126,457		126,457		27,059
Originated four years before current year	49,338		49,338		52,107
Originated more than five years before current fiscal year	68,825		68,825		95,896
Revolving	4,492		4,492		3,893
Revolving to Term	56,651		56,651		64,730
Total loans	493,925		493,925		451,987
Special Mention | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	392		392		0
Originated one year before current year	2,740		2,740		0
Originated two years before current year	1,034		1,034		857
Originated three years before current year	720		720		700
Originated four years before current year	723		723		1,001
Originated more than five years before current fiscal year	369		369		349
Revolving	3,818		3,818		2,144
Revolving to Term	3,074		3,074		12,728
Total loans	12,870		12,870		17,779
Substandard | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	11,204		11,204		27,271
Originated one year before current year	63,668		63,668		41,164
Originated two years before current year	97,872		97,872		27,990
Originated three years before current year	32,674		32,674		37,618
Originated four years before current year	21,667		21,667		10,461
Originated more than five years before current fiscal year	26,861		26,861		29,981
Revolving	89,643		89,643		72,703
Revolving to Term	29,742		29,742		56,716
Total loans	373,331		373,331		303,904
Substandard | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	62,087		62,087		26,638
Originated one year before current year	37,197		37,197		56,423
Originated two years before current year	244,297		244,297		21,401
Originated three years before current year	62,366		62,366		28,983
Originated four years before current year	39,810		39,810		61,186
Originated more than five years before current fiscal year	172,429		172,429		49,558
Revolving	1,018		1,018		0
Revolving to Term	79,285		79,285		48,760
Total loans	698,489		698,489		292,949
Substandard | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	105		105		436
Originated one year before current year	499		499		193
Originated two years before current year	145		145		252
Originated three years before current year	200		200		0
Originated four years before current year	30		30		0
Originated more than five years before current fiscal year	226		226		604
Revolving	694		694		15
Revolving to Term	523		523		1,006
Total loans	2,422		2,422		2,506
Nonaccrual | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	352		352		32
Originated one year before current year	812		812		7,034
Originated two years before current year	2,723		2,723		0
Originated three years before current year	792		792		0
Originated four years before current year	637		637		823
Originated more than five years before current fiscal year	2,354		2,354		3,411
Revolving	242		242		0
Revolving to Term	4,813		4,813		5,461
Total loans	12,725		12,725		16,761
Nonaccrual | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	421		421		0
Originated one year before current year	708		708		21,919
Originated two years before current year	4,267		4,267		10,706
Originated three years before current year	2,881		2,881		1,975
Originated four years before current year	2,763		2,763		1,634
Originated more than five years before current fiscal year	15,942		15,942		8,632
Revolving	0		0		0
Revolving to Term	361		361		1,400
Total loans	27,343		27,343		46,266
Nonaccrual | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0		0		0
Originated one year before current year	262		262		0
Originated two years before current year	434		434		482
Originated three years before current year	347		347		0
Originated four years before current year	67		67		4
Originated more than five years before current fiscal year	1,010		1,010		1,105
Revolving	0		0		0
Revolving to Term	642		642		1,402
Total loans	2,762		2,762		2,993
Doubtful | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	1,460		1,460		0
Originated one year before current year	11,485		11,485		7,261
Originated two years before current year	25,610		25,610		5,925
Originated three years before current year	7,640		7,640		4,875
Originated four years before current year	5,726		5,726		1,742
Originated more than five years before current fiscal year	1,226		1,226		7,211
Revolving	22,294		22,294		0
Revolving to Term	16,979		16,979		0
Total loans	92,420		92,420		27,014
Doubtful | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	7,335		7,335		5,360
Originated one year before current year	5,675		5,675		429
Originated two years before current year	4,858		4,858		30,897
Originated three years before current year	53,679		53,679		2,306
Originated four years before current year	25,556		25,556		37,777
Originated more than five years before current fiscal year	75,276		75,276		35,187
Revolving	0		0		0
Revolving to Term	47,274		47,274		0
Total loans	219,653		219,653		111,956
Doubtful | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Credit Quality Indicator [Line Items]
Originated in current fiscal year	0		0		302
Originated one year before current year	231		231		727
Originated two years before current year	642		642		254
Originated three years before current year	301		301		286
Originated four years before current year	15		15		60
Originated more than five years before current fiscal year	1		1		84
Revolving	0		0		0
Revolving to Term	495		495		0
Total loans	$ 1,685		$ 1,685		$ 1,713

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses - Schedule of Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	$ 36,400,643	$ 32,991,927
Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	36,400,643	32,991,927
Commercial
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	10,408,095	9,512,230
Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	10,183,363	9,279,466
Commercial real estate
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	16,356,216	14,140,629
Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	16,180,588	13,971,571
BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	400,360	401,822
Residential real estate
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	6,757,896	6,699,443
Residential real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	6,757,896	6,699,443
Indirect
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,096,234	1,050,982
Indirect | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,096,234	1,050,982
Direct
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	419,201	523,172
Direct | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	419,201	523,172
Home equity
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,363,001	1,065,471
Home equity | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,363,001	1,065,471
Total Past Due | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	195,856	133,465
Total Past Due | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	53,877	22,321
Total Past Due | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	98,411	44,995
Total Past Due | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	2,456	2,479
Total Past Due | Residential real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	9,046	27,974
Total Past Due | Indirect | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	11,088	10,221
Total Past Due | Direct | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	4,661	8,678
Total Past Due | Home equity | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	16,317	16,797
30-59 Days Past Due | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	53,940	59,187
30-59 Days Past Due | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	11,690	16,128
30-59 Days Past Due | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	20,125	9,081
30-59 Days Past Due | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,095	1,368
30-59 Days Past Due | Residential real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	5,817	12,358
30-59 Days Past Due | Indirect | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	7,702	7,025
30-59 Days Past Due | Direct | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	2,172	5,436
30-59 Days Past Due | Home equity | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	5,339	7,791
60-89 Days Past Due | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	52,256	12,743
60-89 Days Past Due | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	6,213	1,332
60-89 Days Past Due | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	38,395	5,254
60-89 Days Past Due | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	0	134
60-89 Days Past Due | Residential real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	740	367
60-89 Days Past Due | Indirect | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	2,088	1,854
60-89 Days Past Due | Direct | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,029	1,455
60-89 Days Past Due | Home equity | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	3,791	2,347
Past Due 90 Days or More | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	89,660	61,535
Past Due 90 Days or More | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	35,974	4,861
Past Due 90 Days or More | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	39,891	30,660
Past Due 90 Days or More | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,361	977
Past Due 90 Days or More | Residential real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	2,489	15,249
Past Due 90 Days or More | Indirect | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,298	1,342
Past Due 90 Days or More | Direct | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,460	1,787
Past Due 90 Days or More | Home equity | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	7,187	6,659
Current | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	36,204,787	32,858,462
Current | Commercial | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	10,129,486	9,257,145
Current | Commercial real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	16,082,177	13,926,576
Current | BBCC | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	397,904	399,343
Current | Residential real estate | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	6,748,850	6,671,469
Current | Indirect | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	1,085,146	1,040,761
Current | Direct | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	414,540	514,494
Current | Home equity | Portfolio Segment After Reclassifications
Financing Receivable, Past Due [Line Items]
Total loans, net of unearned income	$ 1,346,684	$ 1,048,674

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses - Schedule of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	$ 443,597	$ 274,821
Nonaccrual With No Related Allowance	72,792	37,650
Past Due 90 Days or More and Accruing	1,177	961
Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	105,145	43,775
Nonaccrual With No Related Allowance	32,436	13,143
Past Due 90 Days or More and Accruing	477	242
Commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	246,996	158,222
Nonaccrual With No Related Allowance	40,356	24,507
Past Due 90 Days or More and Accruing	90	585
BBCC
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	4,447	4,706
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	80	95
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	57,552	41,771
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	0	0
Indirect
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	5,114	4,207
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	160	8
Direct
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	3,824	5,892
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	25	31
Home equity
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Amortized Cost	20,519	16,248
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or More and Accruing	$ 345	$ 0

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Schedule of Types of Collateral (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	$ 36,400,643	$ 32,991,927
Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	343,254	226,996
Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	66,507	25,524
Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	6,689	3,747
Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	14,791	5,243
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	4,404	6,464
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	10,408,095	9,512,230
Commercial | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	18,944	14,303
Commercial | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	64,073	24,729
Commercial | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	4,481	2,577
Commercial | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	8,971	280
Commercial | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	4,258	328
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	16,356,216	14,140,629
Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	240,163	146,425
Commercial real estate | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,552	0
Commercial real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	2,106	1,167
Commercial real estate | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Commercial real estate | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	120	6,107
BBCC | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	3,185	3,522
BBCC | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	842	794
BBCC | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	97	0
BBCC | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	323	390
BBCC | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	6,757,896	6,699,443
Residential real estate | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	57,552	41,771
Residential real estate | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Residential real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Residential real estate | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Residential real estate | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Indirect
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,096,234	1,050,982
Indirect | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Indirect | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Indirect | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Indirect | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	5,114	4,207
Indirect | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Direct
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	419,201	523,172
Direct | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	2,891	4,727
Direct | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	40	1
Direct | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	5	3
Direct | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	383	366
Direct | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	26	29
Home equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,363,001	1,065,471
Home equity | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	20,519	16,248
Home equity | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Home equity | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Home equity | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Home equity | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	$ 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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Term Extension	$ 29,090	$ 97,346	$ 83,136	$ 137,391
Payment Delay	$ 7,330	$ 0	$ 7,330	$ 0
Total Class of Loans	0.10%	0.30%	0.20%	0.40%
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Term Extension	$ 17,969	$ 3,502	$ 27,085	$ 20,811
Payment Delay	$ 4,776	$ 0	$ 4,776	$ 0
Total Class of Loans	0.20%	0%	0.30%	0.20%
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Term Extension	$ 11,121	$ 93,844	$ 56,051	$ 116,580
Payment Delay	$ 2,554	$ 0	$ 2,554	$ 0
Total Class of Loans	0.10%	0.70%	0.40%	0.80%

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 - Portfolio Segment After Reclassifications - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 134,032	$ 137,391
30-59 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,707	1,086
60-89 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	3,726	0
Past Due 90 Days or More
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	25,317	2,541
Total Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	34,750	3,627
Current
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	99,282	133,764
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	35,715	20,811
Commercial | 30-59 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	0	0
Commercial | 60-89 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	0	0
Commercial | Past Due 90 Days or More
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	3,854	2,541
Commercial | Total Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	3,854	2,541
Commercial | Current
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	31,861	18,270
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	98,317	116,580
Commercial real estate | 30-59 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,707	1,086
Commercial real estate | 60-89 Days Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	3,726	0
Commercial real estate | Past Due 90 Days or More
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	21,463	0
Commercial real estate | Total Past Due
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	30,896	1,086
Commercial real estate | Current
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 67,421	$ 115,494

Loans and Allowance for Cred_13

Loans and Allowance for Credit Losses - Schedule of Nature of Loan Modifications to Borrowers Experiencing Financial Difficulty (Details) - Extended Maturity	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted- Average Term Extension (in months)	5 months 6 days	9 months 6 days	8 months 6 days	8 months 12 days
Weighted- Average Payment Delay (in months)	6 months 12 days		6 months 12 days
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted- Average Term Extension (in months)	4 months 12 days	7 months 9 days	6 months 24 days	5 months 21 days
Weighted- Average Payment Delay (in months)	6 months		6 months
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted- Average Term Extension (in months)	6 months 15 days	9 months 6 days	8 months 24 days	8 months 27 days
Weighted- Average Payment Delay (in months)	7 months		7 months

Loans and Allowance for Cred_14

Loans and Allowance for Credit Losses - Purchased Credit Deteriorated Loans (Details) $ in Thousands	Apr. 01, 2024 USD ($)
Receivables [Abstract]
Purchase price of loans at acquisition	$ 610,691
Allowance for credit losses at acquisition	26,725
Non-credit discount/(premium) at acquisition	41,886
Par value of acquired loans at acquisition	$ 679,302

Leases - Additional Information

Leases - Additional Information (Details)	Sep. 30, 2024
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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Finance lease cost:
Total	$ 10,654	$ 8,268	$ 29,173	$ 25,994
Occupancy/Equipment expense
Lessee, Lease, Description [Line Items]
Operating lease cost	8,258	7,462	24,352	23,569
Occupancy expense
Finance lease cost:
Amortization of right-of-use assets	2,188	742	4,427	2,170
Sub-lease income	(110)	(119)	(358)	(281)
Interest expense
Finance lease cost:
Interest on lease liabilities	$ 318	$ 183	$ 752	$ 536

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Operating Leases
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable and other assets	Accrued interest receivable and other assets
Operating lease right-of-use assets	$ 188,533	$ 185,506
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other liabilities	Accrued expenses and other liabilities
Operating lease liabilities	$ 206,863	$ 204,960
Finance Leases
Finance lease, right-of-use asset, statement of financial position [extensible enumeration]	Premises and equipment, net	Premises and equipment, net
Premises and equipment, net	$ 32,096	$ 19,820
Finance lease, liability, statement of financial position [extensible enumeration]	Other borrowings	Other borrowings
Other borrowings	$ 33,598	$ 20,955
Weighted-Average Remaining Lease Term (in Years)
Operating leases	8 years	8 years 6 months
Finance leases	7 years	10 years 6 months
Weighted-Average Discount Rate
Operating leases	3.13%	3.04%
Finance leases	3.98%	3.90%

Leases - Schedule of Suppleme_2

Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 24,849	$ 23,766
Operating cash flows from finance leases	752	536
Financing cash flows from finance leases	$ 4,061	$ 1,893

Leases - Schedule of Maturity A

Leases - Schedule of Maturity Analysis of Lease Liability by Lease Classification (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Operating Leases
2024	$ 8,418
2025	34,407
2026	33,720
2027	31,985
2028	28,028
Thereafter	98,614
Total undiscounted lease payments	235,172
Amounts representing interest	(28,309)
Lease liability	206,863	$ 204,960
Finance Leases
2024	2,432
2025	9,215
2026	6,477
2027	4,816
2028	3,210
Thereafter	12,612
Total undiscounted lease payments	38,762
Amounts representing interest	(5,164)
Lease liability	$ 33,598	$ 20,955

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Goodwill [Roll Forward]
Balance at beginning of period	$ 2,170,709	$ 1,998,716	$ 1,998,716	$ 1,998,716
Acquisitions and adjustments	6,290	0	178,283	0
Balance at end of period	$ 2,176,999	$ 1,998,716	$ 2,176,999	$ 1,998,716

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)		3 Months Ended		9 Months Ended
	Aug. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Apr. 01, 2024
Goodwill [Line Items]
Goodwill impairment	$ 0
Impairment charges				$ 0	$ 0
Amortization of other intangible assets		$ 7,411,000	$ 6,040,000	20,291,000	$ 18,286,000
CapStar Financial Holdings, Inc.
Goodwill [Line Items]
Acquisitions and adjustments				178,300,000
Core deposit | CapStar Financial Holdings, Inc.
Goodwill [Line Items]
Estimated useful lives						10 years
Estimated fair value of intangible assets acquired				$ 46,100,000
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	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 242,257	$ 196,132
Accumulated Amortization and Impairment	(114,172)	(93,882)
Net Carrying Amount	128,085	102,250
Core deposit
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	189,636	143,511
Accumulated Amortization and Impairment	(89,825)	(72,940)
Net Carrying Amount	99,811	70,571
Customer trust relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	52,621	52,621
Accumulated Amortization and Impairment	(24,347)	(20,942)
Net Carrying Amount	$ 28,274	$ 31,679

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Schedule of Estimated Amortization Expense for Future Years (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2024 remaining	$ 7,238
2025	26,116
2026	22,474
2027	18,947
2028	15,598
Thereafter	37,712
Net Carrying Amount	$ 128,085	$ 102,250

Qualified Affordable Housing _3

Qualified Affordable Housing Projects and Other Tax Credit Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Summary of Investment Holdings [Line Items]
Investment	$ 287,654		$ 287,654		$ 197,139
Unfunded Commitment	148,361		148,361		103,402
Amortization Expense	6,591	$ 5,852	18,407	$ 14,302
Tax Expense (Benefit) Recognized	(8,254)	(6,592)	(23,031)	(16,654)
LIHTC
Summary of Investment Holdings [Line Items]
Investment, Proportional amortization	202,128		202,128		114,991
Unfunded commitment, Proportional amortization	122,826		122,826		75,981
Amortization Expense	2,777	3,208	8,042	6,135
Tax Expense (Benefit) Recognized	(3,739)	(3,582)	(10,813)	(7,398)
FHTC
Summary of Investment Holdings [Line Items]
Investment, Equity	31,459		31,459		34,220
Unfunded commitment, Equity	25,535		25,535		27,421
Amortization Expense	738	330	2,000	1,178
Tax Expense (Benefit) Recognized	(690)	(399)	(2,043)	(1,423)
NMTC
Summary of Investment Holdings [Line Items]
Investment, Equity	54,063		54,063		47,727
Unfunded commitment, Equity	0		0		0
Amortization Expense	3,076	2,092	8,168	6,275
Tax Expense (Benefit) Recognized	(3,825)	(2,611)	(10,175)	(7,833)
Renewable Energy
Summary of Investment Holdings [Line Items]
Investment, Equity	4		4		201
Unfunded commitment, Equity	0		0		$ 0
Amortization Expense	0	222	197	714
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	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Securities Sold under Agreements to Repurchase [Abstract]
Outstanding at period end	$ 244,626	$ 279,061	$ 285,206
Average amount outstanding during the period	261,818	351,362
Maximum amount outstanding at any month-end during the period	$ 319,423	$ 430,537
Weighted-average interest rate during year	1.11%	0.91%
Weighted-average interest rate at end of year	1.09%	1.35%	3.64%

Securities Sold Under Agreeme_4

Securities Sold Under Agreements to Repurchase - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Securities Sold under Agreements to Repurchase [Abstract]
Securities sold under agreements to repurchase	$ 244,626	$ 285,206	$ 279,061
Weighted-average interest rate at end of year	1.09%	3.64%	1.35%

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	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	$ 244,626	$ 285,206	$ 279,061
U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	244,626
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Secured borrowings and class of collateral pledged under repurchase agreements	244,626
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	244,626
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	Sep. 30, 2024	Dec. 31, 2023
Federal Home Loan Bank, Advances [Line Items]
FHLB advances (fixed rates 2.19% to 5.23%    and variable rates 4.71% to 5.24%) maturing   October 2024 to March 2044	$ 4,475,528	$ 4,300,528
Fair value hedge basis adjustments and unamortized prepayment fees	(4,375)	(19,847)
Federal Home Loan Bank advances	$ 4,471,153	$ 4,280,681
Minimum | FHLB Advances
Federal Home Loan Bank, Advances [Line Items]
Fixed rates	2.19%
Variable rates	4.71%
Maximum | FHLB Advances
Federal Home Loan Bank, Advances [Line Items]
Fixed rates	5.23%
Variable rates	5.24%

Federal Home Loan Bank Advanc_4

Federal Home Loan Bank Advances - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Federal Home Loan Banks [Abstract]
Weighted-average rates of FHLB advances	3.64%	3.45%
Modifications, unamortized prepayment fees	$ 9.7	$ 14.2

Federal Home Loan Bank Advanc_5

Federal Home Loan Bank Advances - Summary of Contractual Maturities of FHLB Advances (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Federal Home Loan Banks [Abstract]
Due in 2024	$ 150,243
Due in 2025	550,285
Due in 2026	100,000
Due in 2028	650,000
Thereafter	3,025,000
Fair value hedge basis adjustments and unamortized prepayment fees	(4,375)	$ (19,847)
Federal Home Loan Bank advances	$ 4,471,153	$ 4,280,681

Other Borrowings - Summary of O

Other Borrowings - Summary of Other Borrowings (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Finance lease liabilities	$ 33,598	$ 20,955
Other borrowings	598,054	764,870
Old National Bank
Debt Instrument [Line Items]
Other basis adjustments	35,455	97,872
Finance lease liabilities	33,598	20,955
Derivative collateralize position amount	$ 35,400	97,600
Subordinated Debt | Old National Bank
Debt Instrument [Line Items]
Variable rates	9.87%
Variable rate	4.618%
Subordinated debentures	$ 12,000	12,000
Leveraged Loans for NMTC | 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	$ 186,020	154,284
Leveraged Loans for NMTC | Minimum | Old National Bank
Debt Instrument [Line Items]
Fixed rates	1%
Leveraged Loans for NMTC | Maximum | Old National Bank
Debt Instrument [Line Items]
Fixed rates	1.43%
Old National Bancorp
Debt Instrument [Line Items]
Other basis adjustments	$ 14,338	18,207
Old National Bancorp | Subordinated Debt | Subordinated Debentures, Due September 2026
Debt Instrument [Line Items]
Fixed rates	5.88%
Subordinated debentures	$ 150,000	150,000
Old National Bancorp | Subordinated Debt | Subordinated Debt Due on June 2030
Debt Instrument [Line Items]
Fixed rates	5.25%
Subordinated debentures	$ 30,000	0
Old National Bancorp | Junior Subordinated Debentures
Debt Instrument [Line Items]
Junior subordinated debentures (rates of 6.42% to 9.09%) maturing July 2031 to September 2037	$ 136,643	136,643
Old National Bancorp | Junior Subordinated Debentures | Minimum
Debt Instrument [Line Items]
Variable rates	6.42%
Old National Bancorp | Junior Subordinated Debentures | Maximum
Debt Instrument [Line Items]
Variable rates	9.09%
Old National Bancorp | Senior Unsecured Notes
Debt Instrument [Line Items]
Fixed rates	4.13%
Senior unsecured notes (fixed rate 4.13%) matured August 2024	$ 0	175,000
Unamortized debt issuance costs related to senior unsecured notes	$ 0	$ (91)

Other Borrowings - Contractual

Other Borrowings - Contractual Maturities of Other Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Other Liabilities Disclosure [Abstract]
Due in 2024	$ 37,482
Due in 2025	20,165
Due in 2026	155,677
Due in 2027	4,207
Due in 2028	2,730
Thereafter	363,359
Unamortized debt issuance costs and other basis adjustments	14,434
Total	$ 598,054	$ 764,870

Other Borrowings - Summary of T

Other Borrowings - Summary of Terms of Outstanding Junior Subordinated Debentures (Details) - Trust Preferred Securities - Junior Subordinated Debentures	9 Months Ended
	Sep. 30, 2024 USD ($)
Debt Instrument [Line Items]
Issuance Amount	$ 136,643,000
Bridgeview Statutory Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 15,464,000
Variable rate	3.58%
Rate	9.09%
Bridgeview Capital Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 15,464,000
Variable rate	3.35%
Rate	8.91%
First Midwest Capital Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 37,825,000
Rate	6.95%
Fixed rates	6.95%
St. Joseph Capital Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 5,155,000
Variable rate	1.75%
Rate	6.95%
Northern States Statutory Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 10,310,000
Variable rate	1.80%
Rate	7.01%
Anchor Capital Trust III
Debt Instrument [Line Items]
Issuance Amount	$ 5,000,000
Variable rate	1.55%
Rate	6.42%
Great Lakes Statutory Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 6,186,000
Variable rate	1.40%
Rate	6.61%
Home Federal Statutory    Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 15,464,000
Variable rate	1.65%
Rate	6.86%
Monroe Bancorp Capital    Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 3,093,000
Variable rate	1.60%
Rate	7.16%
Tower Capital Trust 3
Debt Instrument [Line Items]
Issuance Amount	$ 9,279,000
Variable rate	1.69%
Rate	6.97%
Monroe Bancorp Statutory    Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 5,155,000
Variable rate	1.60%
Rate	6.81%
Great Lakes Statutory Trust III
Debt Instrument [Line Items]
Issuance Amount	$ 8,248,000
Variable rate	1.70%
Rate	6.91%

Other Borrowings - Additional I

Other Borrowings - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Other borrowings	$ 33,598	$ 20,955
Old National Bank
Debt Instrument [Line Items]
Other borrowings	$ 33,598	$ 20,955

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Schedule of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 6,075,072	$ 5,292,095	$ 5,562,900	$ 5,128,595
Other comprehensive income (loss) before    reclassifications	180,398	(168,206)	114,168	(183,958)
Amounts reclassified from AOCI to income	7,254	8,024	20,885	1,565
Ending balance	6,367,298	5,239,537	6,367,298	5,239,537
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(791,408)	(808,633)	(738,809)	(786,422)
Ending balance	(603,756)	(968,815)	(603,756)	(968,815)
Unrealized Gains and Losses on Available- for-Sale Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(699,318)	(701,393)	(652,518)	(642,346)
Other comprehensive income (loss) before    reclassifications	162,861	(156,660)	116,051	(219,562)
Amounts reclassified from AOCI to income	57	178	67	4,033
Ending balance	(536,400)	(857,875)	(536,400)	(857,875)
Unrealized Gains and Losses on Held-to- Maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(88,986)	(103,144)	(95,472)	(112,664)
Other comprehensive income (loss) before    reclassifications	0	0	0	1,325
Amounts reclassified from AOCI to income	3,537	4,193	10,023	12,388
Ending balance	(85,449)	(98,951)	(85,449)	(98,951)
Gains and Losses on Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,104)	(4,096)	9,181	(31,549)
Other comprehensive income (loss) before    reclassifications	17,537	(11,546)	(1,883)	34,279
Amounts reclassified from AOCI to income	3,660	3,653	10,795	(14,719)
Ending balance	18,093	(11,989)	18,093	(11,989)
Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0	0	0	137
Other comprehensive income (loss) before    reclassifications	0	0	0	0
Amounts reclassified from AOCI to income	0	0	0	(137)
Ending balance	$ 0	$ 0	$ 0	$ 0

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Reclassifications out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Debt securities gains (losses), net	$ 76			$ 241			$ 90	$ 5,440
Income tax (expense) benefit	(41,280)			(44,304)			(109,018)	(133,118)
Interest income (expense)	(391,724)			(375,086)			(1,136,603)	(1,138,745)
Salaries and employee benefits	147,494			131,541			456,490	404,715
Net income	(143,802)	$ (121,229)	$ (120,284)	(147,876)	$ (155,036)	$ (146,600)	(385,315)	(449,512)
Amount Reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	(7,254)			(8,024)			(20,885)	(1,565)
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	(76)			(241)			(90)	(5,440)
Income tax (expense) benefit	19			63			23	1,407
Net income	(57)			(178)			(67)	(4,033)
Amount Reclassified from AOCI | Amortization of unrealized losses on    held-to-maturity securities transferred    from available-for-sale
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit	1,203			1,430			3,411	4,186
Interest income (expense)	(4,740)			(5,623)			(13,434)	(16,574)
Net income	(3,537)			(4,193)			(10,023)	(12,388)
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	1,276			1,274			3,765	(5,174)
Interest income (expense)	(4,936)			(4,927)			(14,560)	19,893
Net income	$ (3,660)			$ (3,653)			(10,795)	14,719
Amount Reclassified from AOCI | Actuarial gains (losses)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit							0	(45)
Salaries and employee benefits							0	182
Net income							$ 0	$ 137

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Provision at statutory rate	$ 38,867	$ 40,358	$ 103,810	$ 122,352
Tax-exempt income:
Tax-exempt interest	(4,871)	(4,625)	(14,856)	(13,716)
Section 291/265 interest disallowance	927	675	2,768	1,593
Company-owned life insurance income	(1,089)	(743)	(2,961)	(2,315)
Tax-exempt income	(5,033)	(4,693)	(15,049)	(14,438)
State income taxes	7,485	8,163	18,965	24,856
Interim period effective rate adjustment	1,096	116	1,969	(607)
Tax credit investments - federal	(3,619)	(2,071)	(9,780)	(7,122)
Officer compensation limitation	765	1,040	3,021	3,120
Non-deductible FDIC premiums	2,462	1,949	6,241	6,096
Other, net	(743)	(558)	(159)	(1,139)
Income tax expense	$ 41,280	$ 44,304	$ 109,018	$ 133,118
Effective tax rate	22.30%	23.10%	22.10%	22.90%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Income Taxes [Line Items]
Net deferred tax assets	$ 401,800,000	$ 423,300,000
Valuation allowance recorded	0	0
Bad debt reserves, created for tax purposes	58,600,000
Federal
Income Taxes [Line Items]
Operating loss carryforwards	67,400,000	63,600,000
State
Income Taxes [Line Items]
Operating loss carryforwards	$ 108,900,000	$ 116,900,000

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional Information (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Percentage of periodic changes in fair value qualifies for hedge accounting treatment (in percent)	100%
Interest Income
Derivative [Line Items]
Hedge gain to be reclassified during next twelve months, net	$ 6,100,000
Interest Expense
Derivative [Line Items]
Hedge gain to be reclassified during next twelve months, net	15,800,000
Interest rate swaps on borrowings | Cash flow hedges | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	150,000,000	$ 150,000,000
Interest rate swaps on borrowings | Fair value hedges | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	1,100,000,000	900,000,000
Interest rate swaps, collars, and floors on loan pools | Cash flow hedges | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	1,800,000,000	1,600,000,000
Interest rate swaps on investment securities | Fair value hedges | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	998,107,000	998,107,000
Interest rate lock commitments | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	110,582,000	25,151,000
Forward mortgage loan contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	154,287,000	39,529,000
Customer and offsetting counterparty derivative instruments | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	$ 6,200,000,000	$ 6,000,000,000

Derivative Financial Instrume_4

Derivative Financial Instruments - Summary of Fair Value of Derivative Financial Instruments (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Designated as Hedging Instrument
Derivative [Line Items]
Assets	$ 26,317,000	$ 10,472,000
Liabilities	3,876,000	6,014,000
Designated as Hedging Instrument | Cash flow hedges | Interest rate swaps, collars, and floors on loan pools
Derivative [Line Items]
Notional	1,800,000,000	1,600,000,000
Assets	18,627,000	10,472,000
Liabilities	3,876,000	6,014,000
Designated as Hedging Instrument | Cash flow hedges | Interest rate swaps on borrowings
Derivative [Line Items]
Notional	150,000,000	150,000,000
Assets	0	0
Liabilities	0	0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on borrowings
Derivative [Line Items]
Notional	1,100,000,000	900,000,000
Assets	7,690,000	0
Liabilities	0	0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on investment securities
Derivative [Line Items]
Notional	998,107,000	998,107,000
Assets	0	0
Liabilities	0	0
Not Designated as Hedging Instrument
Derivative [Line Items]
Assets	137,269,000	155,830,000
Liabilities	208,166,000	262,902,000
Not Designated as Hedging Instrument | Interest rate lock commitments
Derivative [Line Items]
Notional	110,582,000	25,151,000
Assets	483,000	291,000
Liabilities	0	0
Not Designated as Hedging Instrument | Forward mortgage loan contracts
Derivative [Line Items]
Notional	154,287,000	39,529,000
Assets	0	0
Liabilities	19,000	566,000
Not Designated as Hedging Instrument | Customer interest rate swaps
Derivative [Line Items]
Notional	6,246,316,000	5,954,216,000
Assets	60,609,000	33,182,000
Liabilities	147,190,000	228,750,000
Not Designated as Hedging Instrument | Counterparty interest rate swaps
Derivative [Line Items]
Notional	6,246,316,000	5,954,216,000
Assets	76,075,000	121,969,000
Liabilities	60,896,000	33,346,000
Not Designated as Hedging Instrument | Customer foreign currency contracts
Derivative [Line Items]
Notional	7,221,000	12,455,000
Assets	74,000	320,000
Liabilities	24,000	59,000
Not Designated as Hedging Instrument | Counterparty foreign currency contracts
Derivative [Line Items]
Notional	7,130,000	12,308,000
Assets	28,000	68,000
Liabilities	$ 37,000	$ 181,000

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative	$ 23,654	$ (15,574)	$ (2,540)	$ 45,547
Gain (Loss) Reclassified from AOCI into Income	(4,936)	(4,927)	(14,560)	19,893
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	(2)	814	369	1,869
Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	(20,350)	35,984	(5,954)	(11,232)
Gain (Loss) Recognized in Income on Related Hedged Items	20,522	(36,489)	6,208	10,632
Interest rate swaps on borrowings | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	24,495	(9,553)	10,207	(18,500)
Gain (Loss) Recognized in Income on Related Hedged Items	(24,645)	9,566	(10,246)	18,303
Interest rate swaps on investment securities | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	(44,845)	45,537	(16,161)	7,268
Gain (Loss) Recognized in Income on Related Hedged Items	45,167	(46,055)	16,454	(7,671)
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative	23,654	(15,574)	(2,540)	4,302
Gain (Loss) Reclassified from AOCI into Income	(5,970)	(5,960)	(17,661)	17,481
Interest rate contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	(89)	426	319	1,125
Mortgage contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	114	391	158	760
Foreign currency contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Income on Derivative	$ (27)	$ (3)	$ (108)	$ (16)

Derivative Financial Instrume_6

Derivative Financial Instruments - Schedule of Offsetting Assets and Liability (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets
Derivative assets	$ 163,586	$ 166,302
Less: amounts offset in the Consolidated Balance Sheet	0	0
Net amount presented in the Consolidated Balance Sheet	163,586	166,302
Offsetting derivative positions	(64,772)	(39,360)
Cash collateral pledged	0	0
Net credit exposure	98,814	126,942
Derivative Liability [Abstract]
Derivative liabilities	212,042	268,916
Less: amounts offset in the Consolidated Balance Sheet	0	0
Net amount presented in the Consolidated Balance Sheet	212,042	268,916
Offsetting derivative positions	(64,772)	(39,360)
Cash collateral pledged	(35,589)	(97,840)
Net credit exposure	$ 111,681	$ 131,716

Commitments, Contingencies, a_3

Commitments, Contingencies, and Financial Guarantees - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Term of standby letters of credit, years	1 year
Percent of unfunded loan commitments with fixed rates	4%
Loan commitments floating rate, minimum	0%
Loan commitments floating rate, maximum	21.99%
Allowance for unfunded loan commitments	$ 25.1	$ 31.2
Interest Rate Swap
Loss Contingencies [Line Items]
Notional amount	$ 696.7	$ 557.8

Commitments, Contingencies, a_4

Commitments, Contingencies, and Financial Guarantees - Loan Commitments and Standby Letters of Credit (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Unfunded loan commitments	$ 8,822,027	$ 8,912,587
Standby letters of credit	197,379	192,237
Carrying value of letters of credit	$ 1,700	$ 1,300

Fair Value - Schedule of Fair V

Fair Value - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	$ 89,249	$ 80,372
Derivative assets	163,586	166,302
Derivative liabilities	212,042	268,916
Carrying Value | Fair Value on Recurring Basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	89,249	80,372
Loans held-for-sale	62,376	32,006
Derivative assets	163,586	166,302
Derivative liabilities	212,042	268,916
Carrying Value | Fair Value on Recurring Basis | U.S. Treasury
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	210,278	396,733
Carrying Value | Fair Value on Recurring Basis | U.S. government-sponsored entities and agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	1,294,278	1,231,264
Carrying Value | Fair Value on Recurring Basis | Mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	5,101,056	4,216,560
Carrying Value | Fair Value on Recurring Basis | States and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	511,565	535,260
Carrying Value | Fair Value on Recurring Basis | Pooled trust preferred securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	11,157	11,337
Carrying Value | Fair Value on Recurring Basis | Other securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	304,106	321,901
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	89,249	80,372
Loans held-for-sale	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	210,278	396,733
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government-sponsored entities and agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | States and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pooled trust preferred securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | 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	62,376	32,006
Derivative assets	163,586	166,302
Derivative liabilities	212,042	268,916
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | U.S. Treasury
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | U.S. government-sponsored entities and agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	1,294,278	1,231,264
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	5,101,056	4,216,560
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | States and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	511,565	535,260
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Pooled trust preferred securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	11,157	11,337
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Other securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	304,106	321,901
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | 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
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | U.S. Treasury
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | U.S. government-sponsored entities and agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | States and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | Pooled trust preferred securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment securities available-for-sale:	0	0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | Other securities
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	Sep. 30, 2024	Dec. 31, 2023
Carrying Value | Commercial Real Estate Foreclosed Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 1,075	$ 1,669
Carrying Value | Residential Foreclosed Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	244
Carrying Value | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	32,051	11,017
Carrying Value | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	147,158	95,457
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial Real Estate Foreclosed Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential Foreclosed Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Commercial Real Estate Foreclosed Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Residential Foreclosed Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Commercial Real Estate Foreclosed Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	1,075	1,669
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Residential Foreclosed Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	244
Estimate of Fair Value Measurement | Commercial | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Estimate of Fair Value Measurement | Commercial | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Estimate of Fair Value Measurement | Commercial | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	32,051	11,017
Estimate of Fair Value Measurement | Commercial real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Estimate of Fair Value Measurement | Commercial real estate | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Estimate of Fair Value Measurement | Commercial real estate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 147,158	$ 95,457

Fair Value - Additional Informa

Fair Value - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Provision for credit losses	$ 28,497	$ 19,068	$ 83,602	$ 47,292
Other real estate owned and other repossessed property	1,300		1,300		$ 1,700
Other real estate owned property write-downs	100	26	$ 500	100
Past due period of mortgage loans held for sale, days			90 days
Interest income for residential loans held for sale	700	400	$ 1,500	900
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	228,800		228,800		134,300
Valuation allowance	49,600		49,600		$ 27,900
Provision for credit losses	$ 19,400	$ 2,100	$ 33,200	$ 21,900

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	Sep. 30, 2024 USD ($) property	Dec. 31, 2023 USD ($)
Collateral Dependent Loans | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 32,051	$ 11,017
Collateral Dependent Loans | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 147,158	$ 95,457
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	0.05
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	0.02
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	0.37
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	0.32	0.38
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	0.26	0.27
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	0.15	0.16
Foreclosed Assets | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 1,075	$ 1,669
Number of real estate properties | property	1
Foreclosed Assets | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 244
Foreclosed Assets | 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 | 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	0.28	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	0.56	0.08
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	0.32
Foreclosed Assets | Weighted Average | Discount for type of property, age of appraisal, and current status | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.24

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	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	$ 62,376	$ 32,006
Difference	1,343	621
Contractual Principal	$ 61,033	$ 31,385

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Schedule of Trading Securities and Other Trading Assets [Line Items]
Interest Income	$ 391,724	$ 375,086	$ 1,136,603	$ 1,138,745
Loans held-for-sale
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Gains and (Losses)	809	(327)	712	(151)
Interest Income	7	12	13	2
Interest (Expense)	0	0	(5)	0
Total Changes in Fair Values Included in Current Period Earnings	$ 816	$ (315)	$ 720	$ (149)

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	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, due from banks, money market,    and other interest-earning investments	$ 1,191,570	$ 1,175,058
Loans, net	36,019,803	32,684,317
Noninterest-bearing demand deposits	9,429,285	9,664,247
Time deposits	7,155,994	5,579,144
Federal funds purchased and interbank borrowings	135,263	390
Securities sold under agreements to repurchase	244,626	285,206	$ 279,061
FHLB advances	4,471,153	4,280,681
Other borrowings	598,054	764,870
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		671,126
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		881,994
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		1,048,068
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	1,191,570	1,175,058
Accrued interest receivable	225,624	225,159
Noninterest-bearing demand deposits	9,429,285	9,664,247
Checking, NOW, savings, and money market    interest-bearing deposits	24,260,467	21,991,789
Time deposits	7,155,994	5,579,144
Federal funds purchased and interbank borrowings	135,263	390
Securities sold under agreements to repurchase	244,626	285,206
FHLB advances	4,471,153	4,280,681
Other borrowings	598,054	764,870
Accrued interest payable	65,836	57,094
Standby letters of credit	1,727	1,318
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	831,160	825,953
Carrying Value | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	984,770	1,029,131
Carrying Value | States and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities held to maturity	1,153,413	1,158,409
Carrying Value | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	10,269,767	9,392,267
Carrying Value | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	16,150,111	13,984,273
Carrying Value | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	6,736,408	6,678,606
Carrying Value | Consumer credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	2,863,517	2,629,171
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	1,191,570	1,175,058
Accrued interest receivable	1,161	859
Noninterest-bearing demand deposits	9,429,285	9,664,247
Checking, NOW, savings, and money market    interest-bearing deposits	24,260,467	21,991,789
Time deposits	0	0
Federal funds purchased and interbank borrowings	135,263	390
Securities sold under agreements to repurchase	244,626	285,206
FHLB 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	49,628	54,465
Noninterest-bearing demand deposits	0	0
Checking, NOW, savings, and money market    interest-bearing deposits	0	0
Time deposits	7,112,642	5,552,538
Federal funds purchased and interbank borrowings	0	0
Securities sold under agreements to repurchase	0	0
FHLB advances	4,502,601	4,090,954
Other borrowings	599,539	755,592
Accrued interest payable	65,836	57,094
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	700,473
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	854,316
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	1,049,266
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	174,835	169,835
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
Securities sold under agreements to repurchase	0	0
FHLB advances	0	0
Other borrowings	0	0
Accrued interest payable	0	0
Standby letters of credit	1,727	1,318
Commitments to extend credit	4,105	3,839
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	10,126,433	9,258,193
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	15,781,629	13,640,868
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	6,170,208	5,579,999
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	$ 2,888,346	$ 2,555,121