Hancock Whitney Corporation - 6 (HWC) 10-Q 4 May 23 2023 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2023	Apr. 30, 2023
Document Information [Line Items]
Entity Registrant Name	HANCOCK WHITNEY CORPORATION
Entity Filer Category	Large Accelerated Filer
Entity Central Index Key	0000750577
Amendment Flag	false
Document Type	10-Q
Document Fiscal Period Focus	Q1
Document Period End Date	Mar. 31, 2023
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	001-36872
Entity Tax Identification Number	64-0693170
Entity Address, Address Line One	Hancock Whitney Plaza
Entity Address, Address Line Two	2510 14th Street
Entity Address, City or Town	Gulfport
Entity Address, State or Province	MS
Entity Address, Postal Zip Code	39501
City Area Code	228
Local Phone Number	868-4000
Entity Common Stock, Shares Outstanding		86,077,069
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	MS
Common Stock, Par Value $3.33 Per Share [Member]
Document Information [Line Items]
Title of 12(b) Security	Common stock, par value $3.33 per share
Trading Symbol	HWC
Security Exchange Name	NASDAQ
6.25% Subordinated Notes [Member]
Document Information [Line Items]
Title of 12(b) Security	6.25% Subordinated Notes
Trading Symbol	HWCPZ
Security Exchange Name	NASDAQ

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 594,372	$ 564,459
Interest-bearing bank deposits	2,287,438	323,332
Federal funds sold	711	728
Securities available for sale, at fair value (amortized cost of $6,238,835 and $6,310,214)	5,565,620	5,556,041
Securities held to maturity (fair value of $2,623,760 and $2,615,398 )	2,825,064	2,852,495
Loans held for sale (includes $14,923 and $10,843 measured at fair value)	23,436	26,385
Loans	23,404,523	23,114,046
Less: allowance for loan losses	(309,385)	(307,789)
Loans, net	23,095,138	22,806,257
Property and equipment, net of accumulated depreciation of $304,305 and $303,451	324,107	328,605
Right of use assets, net of accumulated amortization of $46,939 and $44,901	101,449	96,884
Prepaid expenses	54,540	44,632
Other real estate and foreclosed assets, net	1,976	2,017
Accrued interest receivable	141,704	131,849
Goodwill	855,453	855,453
Other intangible assets, net	53,080	56,193
Life insurance contracts	736,979	729,774
Funded pension assets, net	218,389	216,818
Deferred tax asset, net	187,975	211,418
Other assets	479,652	380,485
Total assets	37,547,083	35,183,825
Deposits
Noninterest-bearing	12,860,027	13,645,113
Interest-bearing	16,753,043	15,425,236
Total deposits	29,613,070	29,070,349
Short-term borrowings	3,519,497	1,871,271
Long-term debt	242,115	242,077
Accrued interest payable	21,823	9,935
Lease liabilities	120,871	116,422
Other liabilities	498,475	531,143
Total liabilities	34,015,851	31,841,197
Stockholders' equity:
Common stock	309,513	309,513
Capital surplus	1,720,623	1,716,884
Retained earnings	2,188,561	2,088,413
Accumulated other comprehensive loss, net	(687,465)	(772,182)
Total stockholders' equity	3,531,232	3,342,628
Total liabilities and stockholders' equity	$ 37,547,083	$ 35,183,825
Preferred shares authorized (par value of $20.00 per share)	50,000,000	50,000,000
Common shares authorized (par value of $3.33 per share)	350,000,000	350,000,000
Common shares issued	92,947,000	92,947,000
Common shares outstanding	86,066,000	85,941,000

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Securities available for sale, amortized cost	$ 6,238,835	$ 6,310,214
Securities held to maturity, fair value	2,623,760	2,615,398
Loans held-for-sale, fair value	14,923	10,843
Property and equipment, accumulated depreciation	304,305	303,451
Right of use assets, accumulated amortization	$ 46,939	$ 44,901
Preferred stock, par value per share	$ 20	$ 20
Common stock, par value per share	$ 3.33	$ 3.33

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest income:
Loans, including fees	$ 314,601	$ 192,750
Loans held for sale	295	691
Securities-taxable	47,646	37,164
Securities-tax exempt	4,721	4,655
Short-term investments	5,340	1,526
Total interest income	372,603	236,786
Interest expense:
Deposits	64,451	3,778
Short-term borrowings	20,063	1,419
Long-term debt	3,095	3,126
Total interest expense	87,609	8,323
Net interest income	284,994	228,463
Provision for credit losses	6,020	(22,527)
Net interest income after provision for credit losses	278,974	250,990
Noninterest income:
Securities transactions, net		(87)
Other income	11,218	14,997
Total noninterest income	80,330	83,432
Noninterest expense:
Compensation expense	92,403	85,993
Employee benefits	22,920	21,403
Personnel expense	115,323	107,396
Net occupancy expense	12,206	11,680
Equipment expense	4,736	4,867
Data processing expense	28,182	24,239
Professional services expense	9,131	7,793
Amortization of intangible assets	3,114	3,748
Deposit insurance and regulatory fees	5,920	3,740
Other real estate and foreclosed assets expense (income), net	155	(1,764)
Other expense	22,117	18,240
Total noninterest expense	200,884	179,939
Income before income taxes	158,420	154,483
Income taxes expense	31,953	31,005
Net income	$ 126,467	$ 123,478
Earnings per common share-basic	$ 1.45	$ 1.40
Earnings per common share-diluted	1.45	1.40
Dividends paid per share	$ 0.30	$ 0.27
Weighted average shares outstanding-basic	86,018	86,660
Weighted average shares outstanding-diluted	86,282	86,936
Service charges on deposit accounts
Noninterest income:
Service charges on deposit accounts	$ 20,622	$ 21,674
Trust fees
Noninterest income:
Service charges on deposit accounts	16,734	15,279
Bank card and ATM fees
Noninterest income:
Service charges on deposit accounts	20,721	20,396
Investment and annuity fees and insurance commissions
Noninterest income:
Service charges on deposit accounts	8,867	7,427
Secondary mortgage market operations
Noninterest income:
Service charges on deposit accounts	$ 2,168	$ 3,746

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 126,467	$ 123,478
Other comprehensive income (loss) before income taxes:
Net change in unrealized gain or (loss) on securities available for sale cash flow hedges and equity method investment	100,944	(390,904)
Reclassification of (income) or loss realized and included in earnings	9,520	(3,838)
Other valuation adjustments to employee benefit plans	(1,836)
Amortization of unrealized net loss on securities transferred to held to maturity	494	261
Other comprehensive income (loss) before income taxes	109,122	(394,481)
Income tax expense (benefit)	24,405	(89,140)
Other comprehensive income (loss) net of income taxes	84,717	(305,341)
Comprehensive income (loss)	$ 211,184	$ (181,863)

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2021	$ 3,670,352	$ 309,513	$ 1,755,701	$ 1,659,073	$ (53,935)
Balance, Shares Issued at Dec. 31, 2021		92,947
Net income	123,478			123,478
Other comprehensive income (loss)	(305,341)				(305,341)
Comprehensive income (loss)	(181,863)			123,478	(305,341)
Cash dividends declared	(23,909)			(23,909)
Common stock activity, long-term incentive plans	3,980		3,929	51
Repurchase of common stock	(18,490)		(18,490)
Issuance of stock from dividend reinvestment and stock purchase plans	881		881
Balance at Mar. 31, 2022	3,450,951	$ 309,513	1,742,021	1,758,693	(359,276)
Balance, Shares Issued at Mar. 31, 2022		92,947
Balance at Dec. 31, 2022	$ 3,342,628	$ 309,513	1,716,884	2,088,413	(772,182)
Balance, Shares Issued at Dec. 31, 2022	92,947	92,947
Net income	$ 126,467			126,467
Other comprehensive income (loss)	84,717				84,717
Comprehensive income (loss)	211,184			126,467	84,717
Dividends declared	(26,387)			(26,387)
Common stock activity, long-term incentive plans	2,872		2,804	68
Issuance of stock from dividend reinvestment and stock purchase plans	935		935
Balance at Mar. 31, 2023	$ 3,531,232	$ 309,513	$ 1,720,623	$ 2,188,561	$ (687,465)
Balance, Shares Issued at Mar. 31, 2023	92,947	92,947

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Repurchase of common stock, shares		350,000
Retained Earnings [Member]
Dividends declared, per common share	$ 0.30	$ 0.27

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 126,467	$ 123,478
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,565	7,177
Provision for credit losses	6,020	(22,527)
Gain on other real estate and foreclosed assets	(20)	(3,014)
Loss on sale of securities		87
Deferred tax (benefit) expense	(801)	10,099
Increase in cash surrender value of life insurance contracts	(2,995)	(634)
Loss on disposal of assets	30
Net decrease in loans held for sale	3,028	27,250
Net amortization of securities premium/discount	5,103	11,356
Amortization of intangible assets	3,114	3,748
Stock-based compensation expense	5,726	5,292
Net change in derivative collateral liability	76,152	15,828
Net (decrease) increase in interest payable and other liabilities	(28,313)	18,512
(Increase) decrease in other assets	(112,916)	91,643
Other, net	(3,272)	(7,761)
Net cash provided by operating activities	85,888	280,534
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of available for sale securities		73,219
Proceeds from maturities of securities available for sale	77,339	167,949
Purchases of securities available for sale		(228,454)
Proceeds from maturities of securities held to maturity	30,900	28,125
Purchases of securities held to maturity	(6,023)	(391,761)
Proceeds received upon termination of fair value hedge instruments	16,550
Net (increase) decrease in short-term investments	(1,964,089)	697,625
Net purchases of Federal Home Loan Bank stock	(68,057)
Proceeds from sales of loans and leases	11,006	18,890
Net increase in loans	(306,873)	(227,948)
Purchase of life insurance contracts		(60,000)
Purchases of property and equipment	(5,498)	(11,353)
Proceeds from sales of other real estate and foreclosed assets	235	6,227
Other, net	(4,252)	3,002
Net cash provided by (used in) investing activities	(2,218,762)	75,521
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in deposits	542,721	33,812
Net increase (decrease) in short-term borrowings	1,648,226	(44,759)
Repayments of long-term debt		(79)
Dividends paid	(26,173)	(23,804)
Payroll tax remitted on net share settlement of equity awards	(2,922)	(1,396)
Proceeds from dividend reinvestment and stock purchase plans	935	881
Repurchase of common stock		(18,490)
Net cash provided by (used in) financing activities	2,162,787	(53,835)
NET INCREASE IN CASH AND DUE FROM BANKS	29,913	302,220
CASH AND DUE FROM BANKS, BEGINNING	564,459	401,201
CASH AND DUE FROM BANKS, ENDING	594,372	703,421
SUPPLEMENTAL INFORMATION FOR NON-CASH INVESTING AND FINANCING ACTIVITIES
Assets acquired in settlement of loans	$ 202	$ 118

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The consolidated financial statements include the accounts of Hancock Whitney Corporation and all other entities in which it has a controlling interest (the “Company”). The financial statements include all adjustments that are, in the opinion of management, necessary to fairly state the Company’s financial condition, results of operations, changes in stockholders’ equity and cash flows for the interim periods presented. The Company has also evaluated all subsequent events for potential recognition and disclosure through the date of the filing of this Quarterly Report on Form 10-Q. Some financial information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”) have been condensed or omitted in this Quarterly Report on Form 10-Q pursuant to Securities and Exchange Commission rules and regulations. These financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022. Financial information reported in these financial statements is not necessarily indicative of the Company’s financial condition, results of operations, or cash flows for any other interim or annual period. Certain prior period amounts have been reclassified to conform to the current period presentation. Such changes include expanding the presentation of the credit quality metrics by vintage to portfolio class from portfolio segment in Note 3 – Loans. These changes in presentation did not have a material impact on the Company's financial condition or operating results. Use of Estimates The accounting principles the Company follows and the methods for applying these principles conform to GAAP and general practices followed by the banking industry. These accounting principles require management to make estimates and assumptions about future events that affect the amounts reported in the consolidated financial statements and the accompanying notes. Actual results could differ from those estimates. Accounting Policies There were no material changes or developments during the reporting period with respect to methodologies that the Company uses when applying what management believes are critical accounting policies and developing critical accounting estimates as disclosed in its Annual Report on Form 10-K for the year ended December 31, 2022. On January 1, 2023, the Company adopted Accounting Standards Update (“ASU”) 2022-02 "Financial Instruments: Credit Losses (Topic 326) - Troubled Debt Restructurings and Vintage Disclosures." The amendments in this update eliminated the recognition and measurement guidance as prescribed by Accounting Standards Codification (“ASC”) 310-40 for troubled debt restructurings (“TDRs”) and introduced new requirements for certain modifications of loans to borrowers experiencing financial difficulty (“MEFDs”). Qualifying modifications are interest rate reductions, other-than-insignificant payment delays, term extensions, or any combination of these terms. Our MEFD policy generally considers six months or less to be the time frame that is considered insignificant for payment delays and/or term extensions. Multiple payment delays and/or term extensions to borrowers experiencing financial difficulty within a twelve month period are evaluated collectively. Qualifying modified loans are subject to reporting requirements for the twelve month period following the modification. This standard was adopted on a prospective basis and therefore, only modifications on or after January 1, 2023 are evaluated and reported under the new requirements. Like TDRs, MEFDs can remain on nonaccrual, move to nonaccrual, return to accrual, or continue to accrue interest, depending on the individual facts and circumstances of the borrower. As allowed by the standard, the Company has elected to evaluate these modified loans for credit loss consistent with policies for the non-modified portfolio, which includes individually evaluating for specific reserves all nonaccrual MEFDs over our existing materiality threshold and collectively evaluating credit loss for all other MEFDs, including those that continue to accrue interest. The credit loss methodology for MEFDs is the same as described in the Allowance for Credit Losses section in the Summary of Significant Accounting Policies disclosed in the Note 1 of the 2022 Form 10-K. Refer to Note 3 – Loans for disclosures related to reportable MEFDs entered into since adoption, as well as gross charge-offs by class in our vintage disclosures, also required by this standard. Refer to Note 14 – Recent Accounting Pronouncements for further discussion of accounting standards adopted and issued but not yet adopted at March 31, 2023 and the anticipated impact to the Company’s financial statements.

Securities

Securities	3 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Securities	Total ($ in thousands) Fair Gross Fair Gross Fair Gross U.S. Treasury and government agency securities $ 49,332 $ 382 $ 8,070 $ 1,406 $ 57,402 $ 1,788 Municipal obligations 85,570 649 86,444 1,348 172,014 1,997 Residential mortgage-backed securities 137,406 4,437 2,071,526 360,474 2,208,932 364,911 Commercial mortgage-backed securities 318,876 14,695 2,570,771 284,880 2,889,647 299,575 Collateralized mortgage obligations — — 67,643 5,241 67,643 5,241 Corporate debt securities 1,820 180 17,804 3,196 19,624 3,376  $ 593,004 $ 20,343 $ 4,822,258 $ 656,545 $ 5,415,262 $ 676,888 Available for Sale December 31, 2022 Losses < 12 months Losses 12 months or > Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized ($ in thousands) Value Losses Value Losses Value Losses U.S. Treasury and government agency securities $ 102,607 754 $ 8,258 $ 1,592 $ 110,865 $ 2,346 Municipal obligations 192,334 3,981 — — 192,334 3,981 Residential mortgage-backed securities 636,060 49,790 1,611,832 348,829 2,247,892 398,619 Commercial mortgage-backed securities 1,489,974 114,195 1,351,530 228,685 2,841,504 342,880 Collateralized mortgage obligations 41,703 3,275 28,884 2,967 70,587 6,242 Corporate debt securities 13,194 1,306 7,386 1,114 20,580 2,420  $ 2,475,872 $ 173,301 $ 3,007,890 $ 583,187 $ 5,483,762 $ 756,488 At each reporting period, the Company evaluates its held to maturity municipal obligation portfolio for credit loss using probability of default and loss given default models. The models were run using a long-term average probability of default migration and with a probability weighting of Moody’s economic forecasts. The resulting credit losses, if any, were negligible and no allowance for credit loss was recorded. The fair value and gross unrealized losses for securities classified as held to maturity with unrealized losses for the periods indicated follow. Held to maturity March 31, 2023 Losses < 12 months Losses 12 months or > Total  Gross Gross Gross  Fair Unrealized Fair Unrealized Fair Unrealized ($ in thousands) Value Losses Value Losses Value Losses U.S. Treasury and government agency securities $ 49,176 $ 2,085 $ 305,813 $ 39,453 $ 354,989 $ 41,538 Municipal obligations 240,561 1,452 183,368 17,810 423,929 19,262 Residential mortgage-backed securities 225,019 9,134 426,955 54,392 651,974 63,526 Commercial mortgage-backed securities 159,220 6,140 707,420 71,513 866,640 77,653 Collateralized mortgage obligations 2,662 30 36,360 2,106 39,022 2,136  $ 676,638 $ 18,841 $ 1,659,916 $ 185,274 $ 2,336,554 $ 204,115 Held to maturity December 31, 2022 Losses < 12 months Losses 12 months or > Total  Gross Gross Gross  Fair Unrealized Fair Unrealized Fair Unrealized ($ in thousands) Value Losses Value Losses Value Losses U.S. Treasury and government agency securities $ 145,893 $ 13,245 $ 226,499 $ 35,799 $ 372,392 $ 49,044 Municipal obligations 560,288 8,878 64,346 17,680 624,634 26,558 Residential mortgage-backed securities 391,146 30,515 270,800 42,017 661,946 72,532 Commercial mortgage-backed securities 697,827 56,899 163,653 30,312 861,480 87,211 Collateralized mortgage obligations 41,438 2,526 — — 41,438 2,526  $ 1,836,592 $ 112,063 $ 725,298 $ 125,808 $ 2,561,890 $ 237,871 As of March 31, 2023 and December 31, 2022, the Company had 709 and 757 securities, respectively, with market values below their cost basis. There were no material unrealized losses related to the marketability of the securities or the issuer’s ability to meet contractual obligations. In all cases, the indicated impairment on these debt securities would be recovered no later than the security’s maturity date or possibly earlier if the market price for the security increases with a reduction in the yield required by the market. The unrealized losses were deemed to be materially non-credit related at March 31, 2023 and December 31, 2022. The Company has adequate liquidity and, therefore, neither plans to nor expects to be required to liquidate these securities before recovery of the amortized cost basis." id="sjs-B4">2. Securities The following tables set forth the amortized cost, gross unrealized gains and losses, and estimated fair value of debt securities classified as available for sale and held to maturity at March 31, 2023 and December 31, 2022. Amortized cost of securities does not include accrued interest which is reflected in the accrued interest line item on the consolidated balance sheets totaling $ 28.3 million at March 31, 2023 and $ 29.1 million at December 31, 2022. March 31, 2023 December 31, 2022 Gross Gross Gross Gross Securities Available for Sale Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair ($ in thousands) Cost Gains Losses Value Cost Gains Losses Value U.S. Treasury and government agency securities $ 113,016 $ 287 $ 1,788 $ 111,515 $ 113,211 $ — $ 2,346 $ 110,865 Municipal obligations 206,219 247 1,997 204,469 207,014 59 3,981 203,092 Residential mortgage-backed securities 2,583,935 240 364,911 2,219,264 2,655,381 224 398,619 2,256,986 Commercial mortgage-backed securities 3,239,281 2,899 299,575 2,942,605 3,234,278 2,032 342,880 2,893,430 Collateralized mortgage obligations 72,884 — 5,241 67,643 76,830 — 6,242 70,588 Corporate debt securities 23,500 — 3,376 20,124 23,500 — 2,420 21,080  $ 6,238,835 $ 3,673 $ 676,888 $ 5,565,620 $ 6,310,214 $ 2,315 $ 756,488 $ 5,556,041 March 31, 2023 December 31, 2022 Gross Gross Gross Gross Securities Held to Maturity Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair ($ in thousands) Cost Gains Losses Value Cost Gains Losses Value U.S. Treasury and government agency securities $ 427,643 $ 824 $ 41,538 $ 386,929 $ 426,454 $ 21 $ 49,044 $ 377,431 Municipal obligations 696,471 1,987 19,262 679,196 698,908 753 26,558 673,103 Residential mortgage-backed securities 715,499 — 63,526 651,973 734,478 — 72,532 661,946 Commercial mortgage-backed securities 944,292 — 77,653 866,639 948,691 — 87,211 861,480 Collateralized mortgage obligations 41,159 — 2,136 39,023 43,964 — 2,526 41,438  $ 2,825,064 $ 2,811 $ 204,115 $ 2,623,760 $ 2,852,495 $ 774 $ 237,871 $ 2,615,398 The following tables present the amortized cost and fair value of debt securities available for sale and held to maturity at March 31, 2023 by contractual maturity. Actual maturities will differ from contractual maturities because of rights to call or repay obligations with or without penalties and scheduled and unscheduled principal payments on mortgage-backed securities and collateralized mortgage obligations. Debt Securities Available for Sale Amortized Fair ($ in thousands) Cost Value Due in one year or less $ 72 $ 72 Due after one year through five years 1,024,989 979,364 Due after five years through ten years 2,980,929 2,699,847 Due after ten years 2,232,845 1,886,337 Total available for sale debt securities $ 6,238,835 $ 5,565,620 Debt Securities Held to Maturity Amortized Fair ($ in thousands) Cost Value Due in one year or less $ 11,637 $ 11,573 Due after one year through five years 538,020 520,589 Due after five years through ten years 918,433 851,024 Due after ten years 1,356,974 1,240,574 Total held to maturity securities $ 2,825,064 $ 2,623,760 The Company held no securities classified as trading at March 31, 2023 and December 31, 2022. The following table presents the proceeds from, gross gains on, and gross losses on sales of securities during the three months ended March 31, 2023 and 2022. Net gains or losses are reflected in the "Securities transactions, net" line item on the Consolidated Statements of Income. Three Months Ended ($ in thousands) 2023 2022 Proceeds $ — $ 73,219 Gross gains — — Gross losses — 87 Net gain (loss) $ — $ ( 87 ) Securities with carrying values totaling $ 6.1 billion and $ 4.9 billion were pledged as collateral at March 31, 2023 and December 31, 2022, respectively, primarily to secure public deposits or securities sold under agreements to repurchase and as collateral for an available line of credit with the Federal Reserve Bank. Credit Quality The Company’s policy is to invest only in securities of investment grade quality. These investments are largely limited to U.S. agency securities and municipal securities. Management has concluded, based on the long history of no credit losses, that the expectation of nonpayment of the held to maturity securities carried at amortized cost is zero for securities that are backed by the full faith and credit of and/or guaranteed by the U.S. government. As such, no allowance for credit losses has been recorded for these securities. The municipal portfolio is analyzed separately for allowance for credit loss in accordance with the applicable guidance for each portfolio as noted below. The Company evaluates credit impairment for individual securities available for sale whose fair value was below amortized cost with a more than inconsequential risk of default and where the Company had assessed whether the decline in fair value was significant enough to suggest a credit event occurred. There were no securities with a material credit loss event and, therefore, no allowance for credit loss was recorded in any period presented. The fair value and gross unrealized losses for securities classified as available for sale with unrealized losses for the periods indicated follow. Available for Sale March 31, 2023 Losses < 12 months Losses 12 months or > Total ($ in thousands) Fair Gross Fair Gross Fair Gross U.S. Treasury and government agency securities $ 49,332 $ 382 $ 8,070 $ 1,406 $ 57,402 $ 1,788 Municipal obligations 85,570 649 86,444 1,348 172,014 1,997 Residential mortgage-backed securities 137,406 4,437 2,071,526 360,474 2,208,932 364,911 Commercial mortgage-backed securities 318,876 14,695 2,570,771 284,880 2,889,647 299,575 Collateralized mortgage obligations — — 67,643 5,241 67,643 5,241 Corporate debt securities 1,820 180 17,804 3,196 19,624 3,376  $ 593,004 $ 20,343 $ 4,822,258 $ 656,545 $ 5,415,262 $ 676,888 Available for Sale December 31, 2022 Losses < 12 months Losses 12 months or > Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized ($ in thousands) Value Losses Value Losses Value Losses U.S. Treasury and government agency securities $ 102,607 754 $ 8,258 $ 1,592 $ 110,865 $ 2,346 Municipal obligations 192,334 3,981 — — 192,334 3,981 Residential mortgage-backed securities 636,060 49,790 1,611,832 348,829 2,247,892 398,619 Commercial mortgage-backed securities 1,489,974 114,195 1,351,530 228,685 2,841,504 342,880 Collateralized mortgage obligations 41,703 3,275 28,884 2,967 70,587 6,242 Corporate debt securities 13,194 1,306 7,386 1,114 20,580 2,420  $ 2,475,872 $ 173,301 $ 3,007,890 $ 583,187 $ 5,483,762 $ 756,488 At each reporting period, the Company evaluates its held to maturity municipal obligation portfolio for credit loss using probability of default and loss given default models. The models were run using a long-term average probability of default migration and with a probability weighting of Moody’s economic forecasts. The resulting credit losses, if any, were negligible and no allowance for credit loss was recorded. The fair value and gross unrealized losses for securities classified as held to maturity with unrealized losses for the periods indicated follow. Held to maturity March 31, 2023 Losses < 12 months Losses 12 months or > Total  Gross Gross Gross  Fair Unrealized Fair Unrealized Fair Unrealized ($ in thousands) Value Losses Value Losses Value Losses U.S. Treasury and government agency securities $ 49,176 $ 2,085 $ 305,813 $ 39,453 $ 354,989 $ 41,538 Municipal obligations 240,561 1,452 183,368 17,810 423,929 19,262 Residential mortgage-backed securities 225,019 9,134 426,955 54,392 651,974 63,526 Commercial mortgage-backed securities 159,220 6,140 707,420 71,513 866,640 77,653 Collateralized mortgage obligations 2,662 30 36,360 2,106 39,022 2,136  $ 676,638 $ 18,841 $ 1,659,916 $ 185,274 $ 2,336,554 $ 204,115 Held to maturity December 31, 2022 Losses < 12 months Losses 12 months or > Total  Gross Gross Gross  Fair Unrealized Fair Unrealized Fair Unrealized ($ in thousands) Value Losses Value Losses Value Losses U.S. Treasury and government agency securities $ 145,893 $ 13,245 $ 226,499 $ 35,799 $ 372,392 $ 49,044 Municipal obligations 560,288 8,878 64,346 17,680 624,634 26,558 Residential mortgage-backed securities 391,146 30,515 270,800 42,017 661,946 72,532 Commercial mortgage-backed securities 697,827 56,899 163,653 30,312 861,480 87,211 Collateralized mortgage obligations 41,438 2,526 — — 41,438 2,526  $ 1,836,592 $ 112,063 $ 725,298 $ 125,808 $ 2,561,890 $ 237,871 As of March 31, 2023 and December 31, 2022, the Company had 709 and 757 securities, respectively, with market values below their cost basis. There were no material unrealized losses related to the marketability of the securities or the issuer’s ability to meet contractual obligations. In all cases, the indicated impairment on these debt securities would be recovered no later than the security’s maturity date or possibly earlier if the market price for the security increases with a reduction in the yield required by the market. The unrealized losses were deemed to be materially non-credit related at March 31, 2023 and December 31, 2022. The Company has adequate liquidity and, therefore, neither plans to nor expects to be required to liquidate these securities before recovery of the amortized cost basis.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2023
Receivables [Abstract]
Loans and Allowance for Credit Losses	3. Loans and Allowance for Credit Losses The Company generally makes loans in its market areas of south and central Mississippi; southern and central Alabama; northwest, central and south Louisiana; the northern, central and panhandle regions of Florida; certain areas of east and northeast Texas, including Houston, Dallas, Austin, and San Antonio; Nashville, Tennessee; and the metropolitan area of Atlanta, Georgia. Loans, net of unearned income, by portfolio are presented at amortized cost basis in the table below. Amortized cost does not include accrued interest, which is reflected in the accrued interest line item in the Consolidated Balance Sheets, totaling $ 107.9 million and $ 100.2 million at March 31, 2023 and December 31, 2022, respectively. The following table presents loans, net of unearned income, by portfolio class at March 31, 2023 and December 31, 2022. March 31, December 31, ($ in thousands) 2023 2022 Commercial non-real estate $ 10,013,482 $ 10,146,453 Commercial real estate - owner occupied 3,050,748 3,033,058 Total commercial and industrial 13,064,230 13,179,511 Commercial real estate - income producing 3,758,455 3,560,991 Construction and land development 1,726,916 1,703,592 Residential mortgages 3,329,793 3,092,605 Consumer 1,525,129 1,577,347 Total loans $ 23,404,523 $ 23,114,046 The following briefly describes the composition of each loan category and portfolio class. Commercial and industrial Commercial and industrial loans are made available to businesses for working capital (including financing of inventory and receivables), business expansion, to facilitate the acquisition of a business, and the purchase of equipment and machinery, including equipment leasing. These loans are primarily made based on the identified cash flows of the borrower and, when secured, have the added strength of the underlying collateral. Commercial non-real estate loans may be secured by the assets being financed or other tangible or intangible business assets such as accounts receivable, inventory, ownership, enterprise value or commodity interests, and may incorporate a personal or corporate guarantee; however, some short-term loans may be made on an unsecured basis, including a small portfolio of corporate credit cards, generally issued as a part of overall customer relationships. Commercial real estate – owner occupied loans consist of commercial mortgages on properties where repayment is generally dependent on the cash flow from the ongoing operations and activities of the borrower. Like commercial non-real estate, these loans are primarily made based on the identified cash flows of the borrower, but also have the added strength of the value of underlying real estate collateral. Commercial real estate – income producing Commercial real estate – income producing loans consist of loans secured by commercial mortgages on properties where the loan is made to real estate developers or investors and repayment is dependent on the sale, refinance, or income generated from the operation of the property. Properties financed include retail, office, multifamily, senior housing, hotel/motel, skilled nursing facilities and other commercial properties. Construction and land development Construction and land development loans are made to facilitate the acquisition, development, improvement and construction of both commercial and residential-purpose properties. Such loans are made to builders and investors where repayment is expected to be made from the sale, refinance or operation of the property or to businesses to be used in their business operations. This portfolio also includes residential construction loans and loans secured by raw land not yet under development. Residential mortgages Residential mortgages consist of closed-end loans secured by first liens on 1- 4 family residential properties. The portfolio includes both fixed and adjustable rate loans, although most longer-term, fixed rate loans originated are sold in the secondary mortgage market. Consumer Consumer loans include second lien mortgage home loans, home equity lines of credit and nonresidential consumer purpose loans. Nonresidential consumer loans include both direct and indirect loans. Direct nonresidential consumer loans are made to finance the purchase of personal property, including automobiles, recreational vehicles and boats, and for other personal purposes (secured and unsecured), and deposit account secured loans. Indirect nonresidential consumer loans include automobile financing provided to the consumer through an agreement with automobile dealerships, though the Company is no longer engaged in this type of lending and the remaining portfolio is in runoff. Consumer loans also include a small portfolio of credit card receivables issued on the basis of applications received through referrals from the Bank’s branches, online and other marketing efforts. Allowance for Credit Losses The calculation of the allowance for credit losses is performed using two primary approaches: a collective approach for pools of loans that have similar risk characteristics using a loss rate analysis, and a specific reserve analysis for credits individually evaluated. The allowance for credit losses was developed using multiple Moody’s Analytics (“Moody’s") macroeconomic forecasts applied to internally developed credit models for a two year reasonable and supportable period. The following tables present activity in the allowance for credit losses (ACL) by portfolio class for the three months ended March 31, 2023 and 2022, as well as the corresponding recorded investment in loans at the end of each period. Commercial Total Commercial Commercial real estate- commercial real estate- Construction non-real owner and income and land Residential ($ in thousands) estate occupied industrial producing development mortgages Consumer Total Three Months Ended March 31, 2023 Allowance for credit losses Allowance for loan losses: Beginning balance $ 96,461 $ 48,284 $ 144,745 $ 71,961 $ 30,498 $ 32,464 $ 28,121 $ 307,789 Charge-offs ( 4,528 ) — ( 4,528 ) — ( 61 ) ( 20 ) ( 3,363 ) ( 7,972 ) Recoveries 1,033 195 1,228 — 6 181 838 2,253 Net provision for loan losses ( 320 ) ( 813 ) ( 1,133 ) 4,231 459 1,916 1,842 7,315 Ending balance - allowance for loan losses $ 92,646 $ 47,666 $ 140,312 $ 76,192 $ 30,902 $ 34,541 $ 27,438 $ 309,385 Reserve for unfunded lending commitments: Beginning balance $ 4,984 $ 302 $ 5,286 $ 1,395 $ 25,110 $ 31 $ 1,487 $ 33,309 Provision for losses on unfunded commitments ( 191 ) 22 ( 169 ) 493 ( 1,487 ) ( 14 ) ( 118 ) ( 1,295 ) Ending balance - reserve for unfunded lending commitments 4,793 324 5,117 1,888 23,623 17 1,369 32,014 Total allowance for credit losses $ 97,439 $ 47,990 $ 145,429 $ 78,080 $ 54,525 $ 34,558 $ 28,807 $ 341,399 Allowance for loan losses: Individually evaluated $ — $ — $ — $ — $ — $ — $ — $ — Collectively evaluated 92,646 47,666 140,312 76,192 30,902 34,541 27,438 309,385 Allowance for loan losses $ 92,646 $ 47,666 $ 140,312 $ 76,192 $ 30,902 $ 34,541 $ 27,438 $ 309,385 Reserve for unfunded lending commitments: Individually evaluated $ — $ — $ — $ — $ — $ — $ — $ — Collectively evaluated 4,793 324 5,117 1,888 23,623 17 1,369 32,014 Reserve for unfunded lending commitments: $ 4,793 $ 324 $ 5,117 $ 1,888 $ 23,623 $ 17 $ 1,369 $ 32,014 Total allowance for credit losses $ 97,439 $ 47,990 $ 145,429 $ 78,080 $ 54,525 $ 34,558 $ 28,807 $ 341,399 Loans: Individually evaluated $ 10,273 $ 684 $ 10,957 $ 1,120 $ — $ 1,135 $ — $ 13,212 Collectively evaluated 10,003,209 3,050,064 13,053,273 3,757,335 1,726,916 3,328,658 1,525,129 23,391,311 Total loans $ 10,013,482 $ 3,050,748 $ 13,064,230 $ 3,758,455 $ 1,726,916 $ 3,329,793 $ 1,525,129 $ 23,404,523 In arriving at the March 31, 2023 allowance for credit losses, the Company weighted the March 2023 baseline economic forecast, which Moody’s defines as the “most likely outcome” based on current conditions and its view of where the economy is headed, with a 40 % probability. The March 2023 baseline scenario maintains a generally optimistic outlook in its assumptions surrounding the drivers of economic growth, including its expectations of the effectiveness of the Federal Reserve's monetary policy in easing inflationary conditions, though at a slower pace than previously forecasted. The baseline forecast includes sustained economic growth with forecasted annual GDP growth of 1.9 % for both 2023 and 2024, and 2.7 % for 2025, and only a modest increase in unemployment, forecasted at 3.5 % for 2023, 3.9 % for 2024, and 4.0 % for 2025. Under the baseline forecast, the recent bank failures are not considered symptomatic of a serious broader problem and do not weaken the financial system or the economy. Management determined that assumptions provided for in the downside slower near-term growth/mild recessionary scenario (S-2) were also reasonably possible and weighted that scenario at 50 %, and further weighted the (S-3) moderate recessionary scenario at 10 % due to additional downside risk. The S-2 scenario assumes that interest rates remain elevated, global supply chain issues keep inflation elevated and the recent bank failures reduce consumer confidence and cause banks to tighten lending standards. This leads to a mild recession that starts in the second quarter of 2023 lasting three quarters, with a peak to trough decline of 1.3 % resulting in forecasted annual GDP growth of only 0.9 % for 2023, 0.3 % for 2024, and 3.2 % for 2025; and unemployment of 4.8 % in 2023, 5.8 % in 2024, and 4.2% in 2025. The S-3 scenario assumes a more severe recession with annual GDP growth of 0.3 % in 2023, a decline of 0.3 % in 2024, and then back to growth of 2.6 % in 2025; and unemployment of 5.6 %, 7.6 %, and 6.3 % in 2023, 2024, and 2025, respectively. While economic uncertainty continues, including the possibility of a recession in the near-term, the credit loss outlook on the loan portfolio as a whole has not changed materially since year-end. Positive economic indicators of growth within the Company's footprint, relatively stable asset quality metrics and modest credit losses in recent periods led to relatively flat reserves for the three months ended March 31, 2023. Commercial Total Commercial Commercial real estate- commercial real estate- Construction non-real owner and income and land Residential ($ in thousands) estate occupied industrial producing development mortgages Consumer Total Three Months Ended March 31, 2022 Allowance for credit losses Allowance for loan losses: Beginning balance $ 95,888 $ 53,433 $ 149,321 $ 108,058 $ 22,102 $ 30,623 $ 31,961 $ 342,065 Charge-offs ( 2,659 ) — ( 2,659 ) ( 4 ) — ( 42 ) ( 2,680 ) ( 5,385 ) Recoveries 2,142 389 2,531 878 68 61 1,528 5,066 Net provision for loan losses ( 8,072 ) ( 5,361 ) ( 13,433 ) ( 3,565 ) ( 1,082 ) ( 4,307 ) ( 1,516 ) ( 23,903 ) Ending balance - allowance for loan losses $ 87,299 $ 48,461 $ 135,760 $ 105,367 $ 21,088 $ 26,335 $ 29,293 $ 317,843 Reserve for unfunded lending commitments: Beginning balance $ 4,522 $ 323 $ 4,845 $ 1,694 $ 21,907 $ 22 $ 866 $ 29,334 Provision for losses on unfunded commitments ( 246 ) 108 ( 138 ) 453 474 ( 3 ) 590 1,376 Ending balance - reserve for unfunded lending commitments 4,276 431 4,707 2,147 22,381 19 1,456 30,710 Total allowance for credit losses $ 91,575 $ 48,892 $ 140,467 $ 107,514 $ 43,469 $ 26,354 $ 30,749 $ 348,553 Allowance for loan losses: Individually evaluated $ 112 $ 32 $ 144 $ 20 $ 20 $ 408 $ 174 $ 766 Collectively evaluated 87,187 48,429 135,616 105,347 21,068 25,927 29,119 317,077 Allowance for loan losses $ 87,299 $ 48,461 $ 135,760 $ 105,367 $ 21,088 $ 26,335 $ 29,293 $ 317,843 Reserve for unfunded lending commitments: Individually evaluated $ — $ — $ — $ — $ — $ — $ — $ — Collectively evaluated 4,276 431 4,707 2,147 22,381 19 1,456 30,710 Reserve for unfunded lending commitments: $ 4,276 $ 431 $ 4,707 $ 2,147 $ 22,381 $ 19 $ 1,456 $ 30,710 Total allowance for credit losses $ 91,575 $ 48,892 $ 140,467 $ 107,514 $ 43,469 $ 26,354 $ 30,749 $ 348,553 Loans: Individually evaluated $ 1,742 $ 951 $ 2,693 $ 1,309 $ 122 $ 4,534 $ 929 $ 9,587 Collectively evaluated 9,582,738 2,867,282 12,450,020 3,561,990 1,286,533 2,458,366 1,556,845 21,313,754 Total loans $ 9,584,480 $ 2,868,233 $ 12,452,713 $ 3,563,299 $ 1,286,655 $ 2,462,900 $ 1,557,774 $ 21,323,341 The release of credit reserves across all portfolios during the three months ended March 31, 2022 reflected positive economic indicators in our market, continued improvement in our asset quality metrics, and a sustained period of minimal credit losses. In arriving at the allowance for credit losses at March 31, 2022, the Company weighted the baseline economic forecast at 40 % and the downside slower near-term growth scenario S-2 at 60 %. Nonaccrual loans and certain reportable modified loan disclosures The following table shows the composition of nonaccrual loans and those without an allowance for loan loss, by portfolio class. March 31, 2023 December 31, 2022 ($ in thousands) Total nonaccrual Nonaccrual without allowance for loan loss Total nonaccrual Nonaccrual without allowance for loan loss Commercial non-real estate $ 13,302 $ 10,273 $ 4,020 $ 941 Commercial real estate - owner occupied 2,393 684 1,461 692 Total commercial and industrial 15,695 10,957 5,481 1,633 Commercial real estate - income producing 1,501 1,120 1,240 1,174 Construction and land development 340 — 309 — Residential mortgages 30,111 1,135 25,269 1,884 Consumer 6,697 — 6,692 — Total loans $ 54,344 $ 13,212 $ 38,991 4,691 As a part of our loss mitigation efforts, we may provide modifications to borrowers experiencing financial difficulty to improve long-term collectability of the loans and to avoid the need for repossession or foreclosure of collateral. As described in Note 1 – Accounting Policy, accounting and reporting requirements changed related to such modifications effective January 1, 2023, impacting the comparability between periods of the disclosures that follow. Nonaccrual loans include reportable nonaccruing modified loans to borrowers experiencing financial difficulty (“MEFDs”) totaling $ 1.6 million at March 31, 2023 and loans modified in troubled debt restructurings (“TDRs”) totaling $ 2.6 million at December 31, 2022. Total reportable MEFDs, both accruing and nonaccruing, were $ 1.6 million at March 31, 2023 and total TDRs were $ 4.5 million at December 31, 2022. At March 31, 2023 and December 31, 2022, the Company had no unfunded commitments to borrowers whose loan terms have been modified as a reportable MEFD or TDR, respectively. The table below provides detail by portfolio class for reportable MEFDs entered into during the three months ended March 31, 2023. March 31, 2023 ($ in thousands) Balance Percentage of portfolio class Commercial non-real estate $ 934 0.01 % Commercial real estate - owner occupied 684 0.02 % Total commercial and industrial 1,618 0.01 % Commercial real estate - income producing — — Construction and land development — — Residential mortgages — — Consumer — — Total reportable modified loans $ 1,618 0.01 % Reportable modifications to borrowers experiencing financial difficulty during the three months ended March 31, 2023 consisted of term extensions ran ging from 9 months to 5 years. As of March 31, 2023, all reportable MEFDs entered into during the three months ended March 31, 2023 had a payment status of current. There were no post modification payment defaults within the three month period ended March 31, 2023. A payment default occurs if the loan is either 90 days or more delinquent or has been charged off as of the end of the period presented. During the three months ended March 31, 2022, two residential mortgage loans with pre and post modification balances of $ 0.1 million and two consumer loans with pre and post modification balances totaling $ 0.1 million were classified as TDRs. The TDRs modified during the three months ended March 31, 2022, included $ 0.1 million of loans with interest rate reduction and $ 0.1 million with other modifications. Two commercial non-real estate loans totaling $ 3.1 million that defaulted during the three months period ended March 31, 2022 had been modified in a TDR during the twelve months prior to default. Aging Analysis The tables below present the aging analysis of past due loans by portfolio class at March 31, 2023 and December 31, 2022. March 31, 2023 30-59 60-89 Greater Total Current Total Recorded ($ in thousands) Commercial non-real estate $ 31,691 $ 17,026 $ 11,029 $ 59,746 $ 9,953,736 $ 10,013,482 $ 8,492 Commercial real estate - owner occupied 2,670 2,029 2,567 7,266 3,043,482 3,050,748 1,399 Total commercial and industrial 34,361 19,055 13,596 67,012 12,997,218 13,064,230 9,891 Commercial real estate - income producing 175 — 2,653 2,828 3,755,627 3,758,455 1,214 Construction and land development 2,304 359 217 2,880 1,724,036 1,726,916 126 Residential mortgages 29,903 8,055 13,684 51,642 3,278,151 3,329,793 167 Consumer 6,590 4,506 4,695 15,791 1,509,338 1,525,129 1,757 Total $ 73,333 $ 31,975 $ 34,845 $ 140,153 $ 23,264,370 $ 23,404,523 $ 13,155 December 31, 2022 30-59 60-89 Greater Total Current Total Recorded ($ in thousands) Commercial non-real estate $ 4,050 $ 21,329 $ 3,418 $ 28,797 $ 10,117,656 $ 10,146,453 $ 996 Commercial real estate - owner occupied 19,069 3,346 1,894 24,309 3,008,749 3,033,058 1,623 Total commercial and industrial 23,119 24,675 5,312 53,106 13,126,405 13,179,511 2,619 Commercial real estate - income producing 879 — 1,174 2,053 3,558,938 3,560,991 — Construction and land development 4,029 242 133 4,404 1,699,188 1,703,592 54 Residential mortgages 28,208 11,056 17,346 56,610 3,035,995 3,092,605 293 Consumer 8,845 2,806 4,407 16,058 1,561,289 1,577,347 1,619 Total $ 65,080 $ 38,779 $ 28,372 $ 132,231 $ 22,981,815 $ 23,114,046 $ 4,585 Credit Quality Indicators The following tables present the credit quality indicators by segment and portfolio class of loans at March 31, 2023 and December 31, 2022. The Company routinely assesses the ratings of loans in its portfolio through an established and comprehensive portfolio management process. March 31, 2023 ($ in thousands) Commercial Commercial Total Commercial Construction Total Grade: Pass $ 9,511,047 $ 2,937,286 $ 12,448,333 $ 3,633,440 $ 1,716,329 $ 17,798,102 Pass-Watch 277,067 52,691 329,758 116,360 9,860 455,978 Special Mention 54,998 7,552 62,550 1,534 191 64,275 Substandard 170,370 53,219 223,589 7,121 536 231,246 Doubtful — — — — — — Total $ 10,013,482 $ 3,050,748 $ 13,064,230 $ 3,758,455 $ 1,726,916 $ 18,549,601 December 31, 2022 ($ in thousands) Commercial Commercial Total Commercial Construction Total Grade: Pass $ 9,641,117 $ 2,912,057 $ 12,553,174 $ 3,440,648 $ 1,690,756 $ 17,684,578 Pass-Watch 284,843 49,093 333,936 111,587 12,097 457,620 Special Mention 79,980 6,267 86,247 3,810 196 90,253 Substandard 140,513 65,641 206,154 4,946 543 211,643 Doubtful — — — — — — Total $ 10,146,453 $ 3,033,058 $ 13,179,511 $ 3,560,991 $ 1,703,592 $ 18,444,094 March 31, 2023 December 31, 2022 ($ in thousands) Residential Consumer Total Residential Consumer Total Performing $ 3,299,682 $ 1,518,431 $ 4,818,113 $ 3,066,319 $ 1,570,186 $ 4,636,505 Nonperforming 30,111 6,698 36,809 26,286 7,161 33,447 Total $ 3,329,793 $ 1,525,129 $ 4,854,922 $ 3,092,605 $ 1,577,347 $ 4,669,952 Below are the definitions of the Company’s internally assigned grades: Commercial: • Pass – loans properly approved, documented, collateralized, and performing which do not reflect an abnormal credit risk. • Pass-Watch – credits in this category are of sufficient risk to cause concern. This category is reserved for credits that display negative performance trends. The “Watch” grade should be regarded as a transition category. • Special Mention – a criticized asset category defined as having potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may, at some future date, result in the deterioration of the repayment prospects for the credit or the institution’s credit position. Special mention credits are not considered part of the classified credit categories and do not expose the institution to sufficient risk to warrant adverse classification. • Substandard – an asset that is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must 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. • Doubtful – an asset that has all the weaknesses inherent in one classified substandard 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. • Loss – credits classified as Loss are considered uncollectable and are charged off promptly once so classified. Residential and Consumer: • Performing – accruing loans. • Nonperforming – loans for which there are good reasons to doubt that payments will be made in full. Nonperforming loans include all loans with nonaccrual status and, prior to January 1, 2023, all loans that were modified in a troubled debt restructuring. Vintage Analysis The following tables present credit quality disclosures of amortized cost by portfolio class and vintage for term loans and by revolving and revolving converted to amortizing at March 31, 2023 and December 31, 2022. The Company defines vintage as the later of origination, renewal or modification date. The gross charge-offs presented in the table are for the three months ended March 31, 2023. Term Loans Revolving Loans March 31, 2023 Amortized Cost Basis by Origination Year Revolving Converted to ($ in thousands) 2023 2022 2021 2020 2019 Prior Loans Term Loans Total Commercial Non-Real Estate: Pass $ 443,067 $ 2,385,284 $ 1,362,105 $ 592,762 $ 505,331 $ 958,298 $ 3,214,349 $ 49,851 $ 9,511,047 Pass-Watch 18,434 54,455 32,893 30,343 7,487 58,113 73,146 2,196 277,067 Special Mention 32,611 5,560 522 1,837 4,198 1,145 8,984 141 54,998 Substandard 21,424 21,686 14,027 30,909 21,450 12,123 47,928 823 170,370 Doubtful — — — — — — — — — Total Commercial Non- $ 515,536 $ 2,466,985 $ 1,409,547 $ 655,851 $ 538,466 $ 1,029,679 $ 3,344,407 $ 53,011 $ 10,013,482 Gross Charge-offs $ — $ 309 $ 170 $ 463 $ 12 $ 33 $ 2,993 $ 548 $ 4,528 Commercial Real Estate - Owner Occupied: Pass $ 86,006 $ 643,498 $ 641,601 $ 526,654 $ 315,352 $ 677,090 $ 34,237 $ 12,848 $ 2,937,286 Pass-Watch 1,985 8,785 4,558 3,668 15,513 17,228 954 — 52,691 Special Mention — 46 — 543 603 6,360 — — 7,552 Substandard 18,506 6,957 680 7,453 4,734 13,889 1,000 — 53,219 Doubtful — — — — — — — — — Total Commercial Real $ 106,497 $ 659,286 $ 646,839 $ 538,318 $ 336,202 $ 714,567 $ 36,191 $ 12,848 $ 3,050,748 Gross Charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial Real Estate - Income Producing: Pass $ 122,528 $ 887,881 $ 889,960 $ 705,277 $ 398,028 $ 514,955 $ 114,746 $ 65 $ 3,633,440 Pass-Watch 18,723 1,191 37 59,847 22,922 13,238 402 — 116,360 Special Mention 985 — — 178 — 371 — — 1,534 Substandard 3,535 397 319 1,214 8 1,648 — — 7,121 Doubtful — — — — — — — — — Total Commercial Real $ 145,771 $ 889,469 $ 890,316 $ 766,516 $ 420,958 $ 530,212 $ 115,148 $ 65 $ 3,758,455 Gross Charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Construction and Land Development: Pass $ 155,497 $ 748,153 $ 545,932 $ 103,183 $ 7,786 $ 24,241 $ 126,158 $ 5,379 $ 1,716,329 Pass-Watch 2,408 3,185 2,670 96 522 611 368 — 9,860 Special Mention — — — — 191 — — — 191 Substandard — 51 51 — 11 423 — — 536 Doubtful — — — — — — — — — Total Construction and $ 157,905 $ 751,389 $ 548,653 $ 103,279 $ 8,510 $ 25,275 $ 126,526 $ 5,379 $ 1,726,916 Gross Charge-offs $ — $ 7 $ 54 $ — $ — $ — $ — $ — $ 61 Residential Mortgage: Performing $ 173,196 $ 628,643 $ 800,082 $ 516,534 $ 187,232 $ 990,957 $ 3,038 — $ 3,299,682 Nonperforming 70 2,452 3,052 338 1,610 22,589 — — 30,111 Total Residential Mortgage $ 173,266 $ 631,095 $ 803,134 $ 516,872 $ 188,842 $ 1,013,546 $ 3,038 $ — $ 3,329,793 Gross Charge-offs $ — $ — $ — $ — $ — $ 20 $ — $ — $ 20 Consumer Loans: Performing $ 31,666 $ 83,306 $ 53,900 $ 40,880 $ 53,213 $ 69,745 $ 1,182,108 $ 3,613 $ 1,518,431 Nonperforming 32 172 362 573 610 4,081 162 706 6,698 Total Consumer $ 31,698 $ 83,478 $ 54,262 $ 41,453 $ 53,823 $ 73,826 $ 1,182,270 $ 4,319 $ 1,525,129 Gross Charge-offs $ — $ 294 $ 329 $ 43 $ 152 $ 236 $ 2,013 $ 296 $ 3,363 Term Loans Revolving Loans December 31, 2022 Amortized Cost Basis by Origination Year Revolving Converted to ($ in thousands) 2022 2021 2020 2019 2018 Prior Loans Term Loans Total Commercial Non-Real Estate: Pass $ 2,600,656 $ 1,450,689 $ 679,355 $ 569,842 $ 267,025 $ 763,122 $ 3,193,769 $ 116,659 $ 9,641,117 Pass-Watch 68,307 38,949 31,841 11,757 8,237 49,577 66,339 9,836 284,843 Special Mention 30,276 13,625 2,443 4,406 322 1,654 25,184 2,070 79,980 Substandard 29,667 13,807 11,766 21,667 12,792 1,250 39,213 10,351 140,513 Doubtful — — — — — — — — — Total Commercial Non- $ 2,728,906 $ 1,517,070 $ 725,405 $ 607,672 $ 288,376 $ 815,603 $ 3,324,505 $ 138,916 $ 10,146,453 Commercial Real Estate - Owner Occupied: Pass $ 630,121 $ 650,742 $ 537,849 $ 328,364 $ 265,437 $ 447,707 $ 46,730 $ 5,107 $ 2,912,057 Pass-Watch 7,129 5,299 3,743 13,301 10,872 7,706 893 150 49,093 Special Mention — — 544 822 1,231 3,670 — — 6,267 Substandard 19,899 547 6,715 7,663 7,543 21,465 1,000 809 65,641 Doubtful — — — — — — — — — Total Commercial Real $ 657,149 $ 656,588 $ 548,851 $ 350,150 $ 285,083 $ 480,548 $ 48,623 $ 6,066 $ 3,033,058 Commercial Real Estate - Income Producing: Pass $ 894,522 $ 795,378 $ 660,235 $ 420,435 $ 232,145 $ 317,446 $ 113,487 $ 7,000 $ 3,440,648 Pass-Watch 1,027 18,070 58,256 20,865 12,066 836 467 — 111,587 Special Mention 235 — 708 2,325 166 376 — — 3,810 Substandard 415 — 2,785 8 1,240 498 — — 4,946 Doubtful — — — — — — — — — Total Commercial Real $ 896,199 $ 813,448 $ 721,984 $ 443,633 $ 245,617 $ 319,156 $ 113,954 $ 7,000 $ 3,560,991 Construction and Land Development: Pass $ 663,735 $ 711,731 $ 148,579 $ 9,198 $ 15,360 $ 10,854 $ 128,842 $ 2,457 $ 1,690,756 Pass-Watch 8,233 1,944 643 559 199 450 69 — 12,097 Special Mention — — — 196 — — — — 196 Substandard 35 55 — 12 61 380 — — 543 Doubtful — — — — — — — — — Total Construction and $ 672,003 $ 713,730 $ 149,222 $ 9,965 $ 15,620 $ 11,684 $ 128,911 $ 2,457 $ 1,703,592 Residential Mortgage: Performing $ 631,339 $ 694,104 $ 518,705 $ 192,431 $ 107,675 $ 918,918 $ 3,147 $ — $ 3,066,319 Nonperforming 1,058 2,434 716 1,196 2,080 18,802 — — 26,286 Total Residential $ 632,397 $ 696,538 $ 519,421 $ 193,627 $ 109,755 $ 937,720 $ 3,147 $ — $ 3,092,605 Consumer Loans: Performing $ 103,742 $ 58,248 $ 45,641 $ 62,715 $ 41,559 $ 40,489 $ 1,212,958 $ 4,834 $ 1,570,186 Nonperforming 193 198 228 758 381 3,341 459 1,603 7,161 Total Consumer $ 103,935 $ 58,446 $ 45,869 $ 63,473 $ 41,940 $ 43,830 $ 1,213,417 $ 6,437 $ 1,577,347 Residential Mortgage Loans in Process of Foreclosure Loans in process of foreclosure include those for which formal foreclosure proceedings are in process according to local requirements of the applicable jurisdiction. Included in loans at March 31, 2023 and December 31, 2022 were $ 3.8 million and $ 4.9 million, respectively, of consumer loans secured by single family residential real estate that were in process of foreclosure. In addition to the single family residential real estate loans in process of foreclosure, the Company also held $ 0.4 million of foreclosed single family residential properties in other real estate owned at both March 31, 2023 and December 31, 2022. Loans Held for Sale Loans held for sale totaled $ 23.4 million and $ 26.4 million at March 31, 2023 and December 31, 2022, respectively. Loans held for sale is composed primarily of residential mortgage loans originated for sale in the secondary market. At March 31, 2023, residential mortgage loans carried at the fair value option totaled $ 14.9 million with an unpaid principal balance of $ 14.6 million. At December 31, 2022, residential mortgage loans carried at the fair value option totaled $ 10.8 million with an unpaid principal balance of $ 10.6 million. All other loans held for sale are carried at the lower of cost or market.

Short-Term Borrowings

Short-Term Borrowings	3 Months Ended
	Mar. 31, 2023
Short-Term Debt [Abstract]
Short-Term Borrowings	4. Short-Term Borrowings The following table presents information concerning short-term borrowings at March 31, 2023 and December 31, 2022. March 31, December 31, ($ in thousands) 2023 2022 Federal funds purchased: Amount outstanding at period end $ 350 $ 1,850 Weighted-average interest at period end 4.40 % 3.90 % Securities sold under agreements to repurchase: Amount outstanding at period end $ 419,147 $ 444,421 Weighted-average interest at period end 0.95 % 0.53 % FHLB borrowings: Amount outstanding at period end $ 3,100,000 $ 1,425,000 Weighted-average interest at period end 4.99 % 4.70 % The following table presents information concerning short-term borrowings for the three months ended March 31, 2023 and 2022. Three Months Ended March 31, ($ in thousands) 2023 2022 Federal funds purchased: Average amount outstanding during period $ 8,411 $ 2,387 Maximum amount at any month end during period $ 1,850 $ 2,350 Weighted-average interest rate during period 5.11 % 0.28 % Securities sold under agreements to repurchase: Average amount outstanding during period $ 445,773 $ 587,508 Maximum amount at any month end during period $ 499,011 $ 640,592 Weighted-average interest rate during period 0.69 % 0.06 % FHLB borrowings: Average amount outstanding during period $ 1,644,444 $ 1,100,011 Maximum amount at any month end during period $ 3,100,000 $ 1,100,000 Weighted-average interest rate during period 4.74 % 0.49 % Federal funds purchased represent unsecured borrowings from other banks, generally on an overnight basis. Securities sold under agreements to repurchase ("repurchase agreements") are funds borrowed on a secured basis by selling securities under agreements to repurchase, mainly in connection with treasury-management services offered to deposit customers. The customer repurchase agreements mature daily and are secured by agency securities. As the Company maintains effective control over assets sold under agreements to repurchase, the securities continue to be presented in the Consolidated Balance Sheets. Because the Company acts as a borrower transferring assets to the counterparty, and the agreements mature daily, the Company's risk is limited. The $ 3.1 billion of Federal Home Loan Bank ("FHLB") borrowings at March 31, 2023 consisted of five fixed rate advances with maturity dates in April and May 2023 . The $ 1.4 billion of FHLB borrowings at December 31, 2022 consisted of one fixed rate note entered into on December 30, 2022, that matured on January 3, 2023 . Subsequent to quarter end, in early May 2023, the Company repaid $ 1.45 billion of FHLB borrowings at maturity using available excess liquidity, and continues to carry FHLB borrowings that will vary based on cash needs.

Derivatives

Derivatives	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	5. Derivatives Risk Management Objective of Using Derivatives The Company enters into derivative financial instruments to manage risks related to differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments. The Bank also enters into interest rate derivative agreements as a service to certain qualifying customers. The Bank manages a matched book with respect to these customer derivatives in order to minimize its net interest rate risk exposure resulting from such agreements. In addition, the Bank also enters into risk participation agreements under which it may either sell or buy credit risk associated with a customer’s performance under certain interest rate derivative contracts related to loans in which participation interests have been sold to or purchased from other banks. Fair Values of Derivative Instruments on the Balance Sheet The table below presents the notional or contractual amounts and fair values of the Company’s derivative financial instruments as well as their classification on the consolidated balance sheets at March 31, 2023 and December 31, 2022. March 31, 2023 December 31, 2022 Derivative (1) Derivative (1) ($ in thousands) Type of Notional or Assets Liabilities Notional or Assets Liabilities Derivatives designated as hedging instruments: Interest rate swaps - variable rate loans Cash Flow $ 1,550,000 $ — $ 77,137 $ 2,100,000 $ 2,301 $ 112,262 Interest rate swaps - securities Fair Value 513,500 18,953 — 716,000 43,501 - 2,063,500 18,953 77,137 2,816,000 45,802 112,262 Derivatives not designated as hedging instruments: Interest rate swaps N/A 4,909,754 137,404 135,584 4,620,544 172,242 169,712 Risk participation agreements N/A 279,357 2 18 298,729 1 13 Interest rate-lock commitments on residential mortgage loans N/A 34,048 720 — 10,930 8 113 Forward commitments to sell residential mortgage loans N/A 13,705 — 276 13,819 161 8 To Be Announced (TBA) securities N/A 20,500 1 165 10,000 78 7 Foreign exchange forward contracts N/A 125,390 1,692 1,645 123,106 1,643 1,594 Visa Class B derivative contract N/A 42,930 — 1,403 43,111 — 1,883 5,425,684 139,819 139,091 5,120,239 174,133 173,330 Total derivatives $ 7,489,184 $ 158,772 $ 216,228 $ 7,936,239 $ 219,935 $ 285,592 Less: netting adjustment (2) ( 66,827 ) ( 27 ) ( 110,438 ) ( 81,471 ) Total derivative assets/liabilities $ 91,945 $ 216,201 $ 109,497 $ 204,121 (1) Derivative assets and liabilities are reported at fair value in other assets or other liabilities, respectively, in the consolidated balance sheets. (2) Represents balance sheet netting of derivative assets and liabilities for variation margin collateral held or placed with the same central clearing counterparty. See offsetting assets and liabilities for further information. Cash Flow Hedges of Interest Rate Risk The Company is party to various interest rate swap agreements designated and qualifying as cash flow hedges of the Company’s forecasted variable cash flows for pools of variable rate loans. For each agreement, the Company receives interest at a fixed rate and pays at a variable rate . T he Company terminated six swap agreements in 2023 and paid cash of approximately $ 2.9 million, which was recorded as accumulated other comprehensive loss and is being amortized into earnings through the original maturity dates of the respective contracts. In 2023, the Company also converted all of its LIBOR-based swaps to SOFR with minimal impact to financial results. The notional amounts of the swap agreements in place at March 31, 2023 expire as follows: $ 50 million in 2025 ; $ 475 million in 2026 ; $ 925 million in 2027 ; and $ 100 million thereafter. Fair Value Hedges of Interest Rate Risk Interest rate swaps on securities available for sale The Company is party to forward-starting fixed payer swaps that convert the latter portion of the term of certain available for sale securities to a floating rate. These derivative instruments are designated as fair value hedges of interest rate risk. This strategy provides the Company with a fixed rate coupon during the front-end unhedged tenor of the bonds and results in a floating rate security during the back-end hedged tenor. At March 31, 2023, these single layer instruments have hedge start dates between January 2025 and July 2026, and maturity dates from December 2027 through March 2031. The fair value of the hedged item attributable to interest rate risk is presented in interest income along with the change in the fair value of the hedging instrument. The hedged available for sale securities are part of closed portfolios of pre-payable commercial mortgage backed securities. In accordance with ASC 815, prepayment risk may be excluded when measuring the change in fair value of such hedged items attributable to interest rate risk under the portfolio layer method (formerly referred to as last-of-layer). At March 31, 2023, the amortized cost basis of the closed portfolio of pre-payable commercial mortgage backed securities totaled $ 559.2 million, excluding any basis adjustment. The amount that represents the hedged items was $ 494.5 million and the basis adjustment associated with the hedged items totaled $ 19.0 million. T he Company terminated three fair value swap agreements during the three months ended March 31, 2023 and received cash of approximately $ 16.6 million. At the time of termination, the value of the swap was recorded as an adjustment to the book value of the underlying security, thereby changing its current book yield and extending its duration. Derivatives Not Designated as Hedges Customer interest rate derivative program The Bank enters into interest rate derivative agreements, primarily rate swaps, with commercial banking customers to facilitate their risk management strategies. The Bank enters into offsetting agreements with unrelated financial institutions, thereby mitigating its net risk exposure resulting from such transactions. Because the interest rate derivatives associated with this program do not meet hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings. Risk participation agreements The Bank also enters into risk participation agreements under which it may either assume or sell credit risk associated with a borrower’s performance under certain interest rate derivative contracts. In those instances where the Bank has assumed credit risk, it is not a direct counterparty to the derivative contract with the borrower and has entered into the risk participation agreement because it is a party to the related loan agreement with the borrower. In those instances in which the Bank has sold credit risk, it is the sole counterparty to the derivative contract with the borrower and has entered into the risk participation agreement because other banks participate in the related loan agreement. The Bank manages its credit risk under risk participation agreements by monitoring the creditworthiness of the borrower, based on the Bank’s normal credit review process. Mortgage banking derivatives The Bank also enters into certain derivative agreements as part of its mortgage banking activities. These agreements include interest rate lock commitments on prospective residential mortgage loans and forward commitments to sell loans to investors on either a best efforts or a mandatory delivery basis. The Company uses these forward sales commitments, which may include To Be Announced (“TBA”) security contracts, on the open market to protect the value of its rate locks and mortgage loans held for sale from changes in interest rates and pricing between the origination of the rate lock and the final sale of these loans. These instruments meet the definition of derivative financial instruments and are reflected in other assets and other liabilities in the Consolidated Balance Sheets, with changes to the fair value recorded in noninterest income within the secondary mortgage market operations line item in the Consolidated Statements of Income. The loans sold on a mandatory basis commit the Company to deliver a specific principal amount of mortgage loans to an investor at a specified price, by a specified date. If the Company fails to deliver the amount of mortgages necessary to fulfill the commitment by the specified date, we may be obligated to pay a pair-off fee, based on then-current market prices, to the investor/counterparty to compensate the investor for the shortfall. Mandatory delivery forward commitments include TBA security contracts on the open market to provide protection against changes in interest rates on the locked mortgage pipeline. The Company expects that mandatory delivery contracts, including TBA security contracts, will experience changes in fair value opposite to the changes in the fair value of derivative loan commitments. Certain assumptions, including pull through rates and rate lock periods, are used in managing the existing and future hedges. The accuracy of underlying assumptions could impact the ultimate effectiveness of any hedging strategies. Forward commitments under best effort contracts commit the Company to deliver a specific individual mortgage loan to an investor if the loan to the underlying borrower closes. Generally, best efforts cash contracts have no pair-off risk regardless of market movement. The price the investor will pay the seller for an individual loan is specified prior to the loan being funded, generally the same day the Company enters into the interest rate lock commitment with the potential borrower. The Company expects that these best efforts forward loan sale commitments will experience a net neutral shift in fair value with related derivative loan commitments. At the closing of the loan, the rate lock commitment derivative expires and the Company generally records a loan held for sale at fair value under the election of fair value option. Customer foreign exchange forward contract derivatives The Company enters into foreign exchange forward derivative agreements, primarily forward foreign currency contracts, with commercial banking customers to facilitate their risk management strategies. The Bank manages its risk exposure from such transactions by entering into offsetting agreements with unrelated financial institutions. The Bank has not elected to designate these foreign exchange forward contract derivatives as hedges; as such, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings. Visa Class B derivative contract The Company is a member of Visa USA. During the fourth quarter of 2018, the Company sold the majority of its Visa Class B holdings, at which time it entered into a derivative agreement with the purchaser whereby the Company will make or receive cash payments whenever the conversion ratio of the Visa Class B shares into Visa Class A shares is adjusted. The conversion ratio changes when Visa deposits funds to a litigation escrow established by Visa to pay settlements for certain litigation, for which Visa is indemnified by Visa USA members. The Company is also required to make periodic financing payments to the purchaser until all of Visa’s covered litigation matters are resolved. Thus, the derivative contract extends until the end of Visa’s covered litigation matters, the timing of which is uncertain. The contract includes a contingent accelerated termination clause based on the credit ratings of the Company. At March 31, 2023 and December 31, 2022, the fair value of the liability associated with this contract was $ 1.4 million and $ 1.9 million, respectively. Refer to Note 13 – Fair Value of Financial Instruments for discussion of the valuation inputs and process for this derivative liability. Effect of Derivative Instruments on the Statements of Income The effects of derivative instruments on the Consolidated Statements of Income for the three months ended March 31, 2023 and 2022 are presented in the table below. Three Months Ended ($ in thousands) March 31, Derivative Instruments: Location of Gain (Loss) Recognized 2023 2022 Cash flow hedges: Variable rate loans Interest income - loans $ ( 8,001 ) $ 6,754 Fair value hedges: Securities Interest income - securities - taxable 2,750 1,158 Securities - terminations Noninterest income - securities transactions, net — 1,620 Derivatives not designated as hedging: Residential mortgage banking Noninterest income - secondary mortgage market operations 484 1,192 Customer and all other instruments Noninterest income - other noninterest income 583 2,349 Total gain (loss) $ ( 4,184 ) $ 13,073 Credit Risk-Related Contingent Features Certain of the Bank’s derivative instruments contain provisions allowing the financial institution counterparty to terminate the contracts in certain circumstances, such as a downgrade of the Bank’s credit ratings below specified levels, a default by the Bank on its indebtedness, or the failure of the Bank to maintain specified minimum regulatory capital ratios or its regulatory status as a well-capitalized institution. These derivative agreements also contain provisions regarding the posting of collateral by each party. At March 31, 2023, the Company was not in violation of any such provisions. The aggregate fair value of derivative instruments with credit risk-related contingent features that were in a net liability position at March 31, 2023 and December 31, 2022 was $ 70.0 million and $ 8.7 million, respectively, for which the Company had posted collateral of $ 73.0 million and $ 8.5 million, respectively. Offsetting Assets and Liabilities The Bank’s derivative instruments with certain counterparties contain legally enforceable netting provisions that allow for net settlement of multiple transactions to a single amount, which may be positive, negative, or zero. Agreements with certain bilateral counterparties require both parties to maintain collateral in the event that the fair values of derivative instruments exceed established exposure thresholds. For centrally cleared derivatives, the Company is subject to initial margin posting and daily variation margin exchange with the central clearinghouses. Offsetting information in regards to all derivative assets and liabilities, including accrued interest, subject to these master netting agreements at March 31, 2023 and December 31, 2022 is presented in the following tables . ($ in thousands) Gross Net Amounts Gross Amounts Not Offset in the Description Gross Offset in Presented in Financial Cash Net As of March 31, 2023 Derivative Assets $ 158,214 $ ( 69,032 ) $ 89,182 $ 85,772 $ 109,617 $ 113,027 Derivative Liabilities $ 85,797 $ ( 25 ) $ 85,772 $ 85,772 $ — $ — ($ in thousands) Gross Net Amounts Gross Amounts Not Offset in the Description Gross Offset in Presented in Financial Cash Net As of December 31, 2022 Derivative Assets $ 223,072 $ ( 112,338 ) $ 110,734 $ 32,601 $ 27,852 $ 105,985 Derivative Liabilities $ 116,395 $ ( 83,794 ) $ 32,601 $ 32,601 $ — $ — The Company has excess posted collateral compared to total exposure due to initial margin requirements for day-to-day rate volatility.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2023
Stockholders' Equity Note [Abstract]
Stockholders' Equity	6. Stockholders’ Equity Common Shares Outstanding Common shares outstanding excludes treasury shares totaling 6.2 million and 6.3 million, with a first-in-first-out cost basis of $ 236.2 million and $ 238.6 million, at March 31, 2023 and December 31, 2022, respectively. Shares outstanding also excludes unvested restricted share awards totaling 0.6 million and 0.7 million at March 31, 2023 and December 31, 2022. Stock Buyback Program On January 26, 2023, the Company’s board of directors approved a stock buyback program whereby the Company is authorized to repurchase up to 4.3 million shares of its common stock through the program’s expiration date of December 31, 2024 . The program allows the Company to repurchase its common shares in the open market, by block purchase, through accelerated share repurchase programs, in privately negotiated transactions, or otherwise, in one or more transactions. The Company is not obligated to purchase any shares under this program, and the board of directors has the ability to terminate or amend the program at any time prior to the expiration date. To date, the Company has not repurchased shares under this program. Prior to its expiration on December 31, 2022 , the Company had in place a stock repurchase program authorized by the board of directors on April 22, 2021, whereby the Company was authorized to repurchase up to 4.3 million shares of its common stock. The program allowed the Company to repurchase its common shares in the open market, by block purchase, through accelerated share repurchase programs, in privately negotiated transactions, or otherwise, in one or more transactions. During the first quarter of 2022, the Company repurchased 350,000 shares of its common stock at an average cost of $ 52.82 per share, inclusive of commissions. In total, the Company repurchased 1.7 million shares at an average cost of $ 48.77 per share under this plan. Accumulated Other Comprehensive Income (Loss) A roll-forward of the components of Accumulated Other Comprehensive Income (Loss) is presented in the table that follows:  Available HTM Securities Employee Cash Equity Method Investment Total ($ in thousands) Balance, December 31, 2021 $ 11,037 $ 153 $ ( 80,946 ) $ 16,284 $ ( 463 ) $ ( 53,935 ) Net change in unrealized gain (loss) ( 358,190 ) — — ( 33,182 ) 468 ( 390,904 ) Reclassification of net income or loss realized and included in earnings 1,707 — 1,209 ( 6,754 ) — ( 3,838 ) Transfer of net unrealized loss from AFS to HTM securities portfolio 15,405 ( 15,405 ) — — — — Amortization of unrealized net gain on securities transferred to HTM — 261 — — — 261 Income tax (expense) benefit 76,981 3,418 ( 273 ) 9,014 — 89,140 Balance, March 31, 2022 $ ( 253,060 ) $ ( 11,573 ) $ ( 80,010 ) $ ( 14,638 ) $ 5 $ ( 359,276 ) Balance, December 31, 2022 $ ( 584,408 ) $ ( 10,734 ) $ ( 97,952 ) $ ( 79,093 ) $ 5 $ ( 772,182 ) Net change in unrealized gain 80,958 — — 19,280 706 100,944 Reclassification of net loss realized and included in earnings — — 1,519 8,001 — 9,520 Valuation adjustments to employee benefit plans — — ( 1,836 ) — — ( 1,836 ) Amortization of unrealized net gain or loss on securities transferred to HTM — 494 — — — 494 Income tax (expense) benefit ( 18,224 ) ( 111 ) 71 ( 6,141 ) — ( 24,405 ) Balance, March 31, 2023 $ ( 521,674 ) $ ( 10,351 ) $ ( 98,198 ) $ ( 57,953 ) $ 711 $ ( 687,465 ) Accumulated Other Comprehensive Income or Loss (“AOCI”) is reported as a component of stockholders’ equity. AOCI can include, among other items, unrealized holding gains and losses on securities available for sale (“AFS”), including the Company’s share of unrealized gains and losses reported by a partnership accounted for under the equity method, gains and losses associated with pension or other post-retirement benefits that are not recognized immediately as a component of net periodic benefit cost, and gains and losses on derivative instruments that are designated as, and qualify as, cash flow hedges. Net unrealized gains and losses on AFS securities reclassified as securities held to maturity (“HTM”) also continue to be reported as a component of AOCI and will be amortized over the estimated remaining life of the securities as an adjustment to interest income. Subject to certain thresholds, unrealized losses on employee benefit plans will be reclassified into income as pension and post-retirement costs are recognized over the remaining service period of plan participants. Accumulated gains or losses on cash flow hedges of variable rate loans described in Note 5 will be reclassified into income over the life of the hedge. Accumulated other comprehensive loss resulting from the terminated interest rate swaps will be amortized over the remaining maturities of the designated instruments. Gains and losses within AOCI are net of deferred income taxes, where applicable. The following table shows the line items in the consolidated statements of income affected by amounts reclassified from AOCI.  Three Months Ended Amount reclassified from AOCI (a) March 31, Affected line item on ($ in thousands) 2023 2022 the statement of income Loss on sale of AFS securities $ — $ ( 1,707 ) Noninterest income Tax effect — 385 Income taxes Net of tax — ( 1,322 ) Net income Amortization of unrealized net loss on securities transferred to HTM ( 494 ) ( 261 ) Interest income Tax effect 111 59 Income taxes Net of tax ( 383 ) ( 202 ) Net income Amortization of defined benefit pension and post-retirement items ( 1,519 ) ( 1,209 ) Other noninterest expense (b) Tax effect 340 273 Income taxes Net of tax ( 1,179 ) ( 936 ) Net income Reclassification of unrealized gain/(Loss) on cash flow hedges ( 10,629 ) 3,875 Interest income Tax effect 2,393 ( 875 ) Income taxes Net of tax ( 8,236 ) 3,000 Net income Amortization of gain on terminated cash flow hedges 2,628 2,879 Interest income Tax effect ( 592 ) ( 650 ) Income taxes Net of tax 2,036 2,229 Net income Reclassification of unrealized loss on equity method investment — ( 468 ) Noninterest income Tax effect — — Income taxes Net of tax — ( 468 ) Net income Total reclassifications, net of tax $ ( 7,762 ) $ 2,301 Net income (a) Amounts in parentheses indicate reduction in net income (b) These AOCI components are included in the computation of net periodic pension and post-retirement cost that is reported with other noninterest

Other Noninterest Income

Other Noninterest Income	3 Months Ended
	Mar. 31, 2023
Other Income, Nonoperating [Abstract]
Other Noninterest Income	7. Other Noninterest Income Components of other noninterest income are as follows: Three Months Ended March 31, ($ in thousands) 2023 2022 Income from bank-owned life insurance $ 3,286 $ 3,545 Credit related fees 2,765 2,669 Income from derivatives 583 2,349 Other miscellaneous 4,584 6,434 Total other noninterest income $ 11,218 $ 14,997

Other Noninterest Expense

Other Noninterest Expense	3 Months Ended
	Mar. 31, 2023
Other Expense, Nonoperating [Abstract]
Other Noninterest Expense	8. Other Noninterest Expense Components of other noninterest expense are as follows: Three Months Ended March 31, ($ in thousands) 2023 2022 Corporate value and franchise taxes and other non-income taxes $ 5,253 $ 4,248 Advertising 3,256 3,166 Telecommunications and postage 3,071 2,925 Entertainment and contributions 2,631 2,961 Tax credit investment amortization 1,401 1,004 Printing and supplies 990 1,003 Travel expense 1,046 660 Net other retirement expense ( 3,655 ) ( 6,772 ) Other miscellaneous 8,124 9,045 Total other noninterest expense $ 22,117 $ 18,240

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Common Share	9. Earnings Per Common Share The Company calculates earnings per share using the two-class method. The two-class method allocates net income to each class of common stock and participating security according to common dividends declared and participation rights in undistributed earnings. Participating securities consist of nonvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents. A summary of the information used in the computation of earnings per common share follows. Three Months Ended March 31, ($ in thousands, except per share data) 2023 2022 Numerator: Net income to common shareholders $ 126,467 $ 123,478 Net income allocated to participating securities - basic and diluted 1,358 1,918 Net income allocated to common shareholders - basic and diluted $ 125,109 $ 121,560 Denominator: Weighted-average common shares - basic 86,018 86,660 Dilutive potential common shares 264 276 Weighted-average common shares - diluted 86,282 86,936 Earnings per common share: Basic $ 1.45 $ 1.40 Diluted $ 1.45 $ 1.40 Potential common shares consist of stock options, nonvested performance-based awards, nonvested restricted stock units, and restricted share awards deferred under the Company’s nonqualified deferred compensation plan. These potential common shares do not enter into the calculation of diluted earnings per share if the impact would be antidilutive, i.e., increase earnings per share or reduce a loss per share. Potential common shares totaling 34,157 for the three months ended March 31, 2023, and 231 for the three months ended March 31, 2022, did not enter the calculation of diluted earnings per share as the impact would have been anti-dilutive.

Retirement Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Retirement Plans	10. Retirement Plans The Company offers a qualified defined benefit pension plan, the Hancock Whitney Corporation Pension Plan and Trust Agreement (“Pension Plan”), covering certain eligible associates. Eligibility is based on minimum age and service-related requirements. The Pension Plan excludes any individual hired or rehired by the Company after June 30, 2017 from eligibility to participate, and the accrued benefits of any participant in the Pension Plan whose combined age plus years of service as of January 1, 2018 totaled less than 55 were frozen as of January 1, 2018 and will not thereafter increase. The Company makes contributions to the Pension Plan in amounts sufficient to meet funding requirements set forth in federal employee benefit and tax laws, plus such additional amounts as the Company may determine to be appropriate. The Company also offers a defined contribution retirement benefit plan (401(k) plan), the Hancock Whitney Corporation 401(k) Savings Plan and Trust Agreement (“401(k) Plan”), that covers substantially all associates who have been employed 60 days and meet a minimum age requirement and employment classification criteria. The Company matches 100 % of the first 1 % of compensation saved by a participant, and 50 % of the next 5 % of compensation saved. Newly eligible associates are automatically enrolled at an initial 3 % savings rate unless the associate actively opts out of participation in the plan. Beginning January 1, 2018, the Company makes an additional basic contribution to associates hired or rehired after June 30, 2017 in an amount equal to 2 % of the associate’s eligible compensation. For Pension Plan participants whose benefits were frozen as of January 1, 2018, the 401(k) Plan provides an enhanced Company contribution in the amount of 2 %, 4 % or 6 % of such participant’s eligible compensation, based on the participant’s current age and years of service with the Company. Participants vest in basic and enhanced Company contributions upon completion of three years of service. The Company sponsors a nonqualified defined benefit plan covering certain legacy Whitney employees, under which accrued benefits were frozen as of December 31, 2012 and, as such, no future benefits are accrued under this plan. The Company sponsors defined benefit post-retirement plans for both legacy Hancock and legacy Whitney employees that provide health care and life insurance benefits. Benefits under the Hancock plan are not available to employees hired on or after January 1, 2000. Benefits under the Whitney plan are restricted to retirees who were already receiving benefits at the time of plan amendments in 2007 or active participants who were eligible to receive benefits as of December 31, 2007. The following tables show the components of net periodic benefit cost included in expense for the periods indicated.  Other Post- ($ in thousands) Pension Benefits Retirement Benefits For the Three Months Ended March 31, 2023 2022 2023 2022 Service cost $ 1,980 $ 2,800 $ ( 31 ) $ 25 Interest cost 5,788 3,417 216 77 Expected return on plan assets ( 11,178 ) ( 11,475 ) — — Amortization of net (gain) or loss and prior service costs 1,770 1,348 ( 251 ) ( 139 ) Net periodic benefit cost $ ( 1,640 ) $ ( 3,910 ) $ ( 66 ) $ ( 37 )

Share-Based Payment Arrangement

Share-Based Payment Arrangements	3 Months Ended
	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Share-Based Payment Arrangements	11. Share-Based Payment Arrangements The Company maintains incentive compensation plans that provide for awards of share-based compensation to employees and directors. These plans have been approved by the Company’s shareholders. Detailed descriptions of these plans were included in Note 18 to the consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022. At March 31, 2023, the Company had 1,476 outstanding and exercisable stock options, with a weighted average exercise price of $ 53.73 , weighted average remaining contractual term of less than one year and no aggregate intrinsic value. During the three months ended March 31, 2023, no stock options were exercised. The Company’s restricted and performance-based share awards to certain employees and directors are subject to service requirements. A summary of the status of the Company’s nonvested restricted stock units and restricted and performance-based share awards at March 31, 2023 are presented in the following table. Weighted Average Number of Grant Date Shares Fair Value Nonvested at January 1, 2023 1,431,515 $ 40.95 Granted 582,348 50.08 Vested ( 182,901 ) 47.42 Forfeited ( 71,086 ) 39.65 Nonvested at March 31, 2023 1,759,876 $ 43.36 At March 31, 2023, there was $ 66.3 million of total unrecognized compensation expense related to nonvested restricted and performance share awards and units expected to vest in the future. This compensation is expected to be recognized in expense over a weighted average period of 3.4 years. The total fair value of shares that vested during the three months ended March 31, 2023 was $ 7.1 million. During the three months ended March 31, 2023, the Company granted 463,604 restricted stock units (RSUs) to certain eligible employees. Unlike restricted share awards (RSAs), which still comprise the majority of the unvested share-based compensation awards, the holders of unvested restricted stock units have no rights as a shareholder of the Company, including voting or dividend rights. The Company has elected to award dividend equivalents on each restricted stock unit. Such dividend equivalents are forfeited should the employee terminate employment prior to the vesting of the RSU. During the three months ended March 31, 2023, the Company granted 41,495 performance share awards subject to a total shareholder return (“TSR”) performance metric with a grant date fair value of $ 51.14 per share and 41,495 performance share awards subject to an operating earnings per share performance metric with a grant date fair value of $ 46.73 per share to key members of executive management. The number of performance shares subject to TSR that ultimately vest at the end of the three-year performance period, if any, will be based on the relative rank of the Company’s three-year TSR among the TSRs of a peer group of 50 regional banks. The fair value of the performance shares subject to TSR at the grant date was determined using a Monte Carlo simulation method. The number of performance shares subject to operating earnings per share that ultimately vest will be based on the Company’s attainment of certain operating earnings per share goals over the two-year performance period. The maximum number of performance shares that could vest is 200 % of the target award. Compensation expense for these performance shares is recognized on a straight line basis over the three-year service period.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. Commitments and Contingencies In the normal course of business, the Bank enters into financial instruments, such as commitments to extend credit and letters of credit, to meet the financing needs of its customers. Such instruments are not reflected in the accompanying consolidated financial statements until they are funded, although they expose the Bank to varying degrees of credit risk and interest rate risk in much the same way as funded loans. Under regulatory capital guidelines, the Company and Bank must include unfunded commitments meeting certain criteria in risk-weighted capital calculations. Commitments to extend credit include revolving commercial credit lines, nonrevolving loan commitments issued mainly to finance the acquisition and development or construction of real property or equipment, and credit card and personal credit lines. The availability of funds under commercial credit lines and loan commitments generally depends on whether the borrower continues to meet credit standards established in the underlying contract and has not violated other contractual conditions. Loan commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee by the borrower. Credit card and personal credit lines are generally subject to cancellation if the borrower’s credit quality deteriorates. A number of commercial and personal credit lines are used only partially or, in some cases, not at all before they expire, and the total commitment amounts do not necessarily represent future cash requirements of the Company. A substantial majority of the letters of credit are standby agreements that obligate the Bank to fulfill a customer’s financial commitments to a third party if the customer is unable to perform. The Bank issues standby letters of credit primarily to provide credit enhancement to its customers’ other commercial or public financing arrangements and to help them demonstrate financial capacity to vendors of essential goods and services. The contract amounts of these instruments reflect the Company’s exposure to credit risk. The Company undertakes the same credit evaluation in making loan commitments and assuming conditional obligations as it does for on-balance sheet instruments and may require collateral or other credit support. The Company had a reserve for unfunded lending commitments of $ 32.0 million and $ 33.3 million at March 31, 2023 and December 31, 2022, respectively. The following table presents a summary of the Company’s off-balance sheet financial instruments as of March 31, 2023 and December 31, 2022:  March 31, December 31, ($ in thousands) 2023 2022 Commitments to extend credit $ 10,285,535 $ 10,202,464 Letters of credit 430,026 400,505 Legal Proceedings The Company is party to various legal proceedings arising in the ordinary course of business. Management does not believe that loss contingencies, if any, arising from pending litigation and regulatory matters will have a material adverse effect on the consolidated financial position or liquidity of the Company.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements	13. Fair Value Measurements The FASB defines fair value as the exchange price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The FASB’s guidance also establishes a fair value hierarchy that prioritizes the inputs to these valuation techniques used to measure fair value, giving preference to quoted prices in active markets for identical assets or liabilities (“level 1”) and the lowest priority to unobservable inputs such as a reporting entity’s own data (“level 3”). Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical assets or liabilities in markets that are not active, observable inputs other than quoted prices, such as interest rates and yield curves, and inputs that are derived principally from or corroborated by observable market data by correlation or other means. Fair Value of Assets and Liabilities Measured on a Recurring Basis The following tables present for each of the fair value hierarchy levels the Company’s financial assets and liabilities that are measured at fair value on a recurring basis in the consolidated balance sheets at March 31, 2023 and December 31, 2022:  March 31, 2023 ($ in thousands) Level 1 Level 2 Level 3 Total Assets Available for sale debt securities: U.S. Treasury and government agency securities $ — $ 111,515 $ — $ 111,515 Municipal obligations — 204,469 — 204,469 Corporate debt securities — 20,124 — 20,124 Residential mortgage-backed securities — 2,219,264 — 2,219,264 Commercial mortgage-backed securities — 2,942,605 — 2,942,605 Collateralized mortgage obligations — 67,643 — 67,643 Total available for sale securities — 5,565,620 — 5,565,620 Mortgage loans held for sale — 14,923 — 14,923 Derivative assets (1) — 91,945 — 91,945 Total recurring fair value measurements - assets $ — $ 5,672,488 $ — $ 5,672,488 Liabilities Derivative liabilities (1) $ — $ 214,798 $ 1,403 $ 216,201 Total recurring fair value measurements - liabilities $ — $ 214,798 $ 1,403 $ 216,201  December 31, 2022 ($ in thousands) Level 1 Level 2 Level 3 Total Assets Available for sale debt securities: U.S. Treasury and government agency securities $ — $ 110,865 $ — $ 110,865 Municipal obligations — 203,092 — 203,092 Corporate debt securities — 21,080 — 21,080 Residential mortgage-backed securities — 2,256,986 — 2,256,986 Commercial mortgage-backed securities — 2,893,430 — 2,893,430 Collateralized mortgage obligations — 70,588 — 70,588 Total available for sale securities — 5,556,041 — 5,556,041 Mortgage loans held for sale 10,843 — 10,843 Derivative assets (1) — 109,497 — 109,497 Total recurring fair value measurements - assets $ — $ 5,676,381 $ — $ 5,676,381 Liabilities Derivative liabilities (1) $ — $ 202,238 $ 1,883 $ 204,121 Total recurring fair value measurements - liabilities $ — $ 202,238 $ 1,883 $ 204,121 (1) For further disaggregation of derivative assets and liabilities, see Note 5 - Derivatives. Securities classified as level 2 include obligations of U.S. Government agencies and U.S. Government-sponsored agencies, including “off-the-run” U.S. Treasury securities, residential and commercial mortgage-backed securities and collateralized mortgage obligations that are issued or guaranteed by U.S. government agencies, and state and municipal bonds. The level 2 fair value measurements for investment securities are obtained quarterly from a third-party pricing service that uses industry-standard pricing models. Substantially all of the model inputs are observable in the marketplace or can be supported by observable data. The Company invests only in securities of investment grade quality with a targeted duration, for the overall portfolio, generally between two and five and a half years . Company policies generally limit investments to U.S. agency securities and municipal securities determined to be investment grade according to an internally generated score which generally includes a rating of not less than “Baa” or its equivalent by a nationally recognized statistical rating agency. Loans held for sale consist of residential mortgage loans carried under the fair value option. The fair value for these instruments is classified as level 2 based on market prices obtained from potential buyers. For the Company’s derivative financial instruments designated as hedges and those under the customer interest rate program, the fair value is obtained from a third-party pricing service that uses an industry-standard discounted cash flow model that relies on inputs, LIBOR swap curves and Overnight Index swap rate curves, all observable in the marketplace. To comply with the accounting guidance, credit valuation adjustments are incorporated in the fair values to appropriately reflect nonperformance risk for both the Company and the counterparties. Although the Company has determined that the majority of the inputs used to value these derivative instruments fall within level 2 of the fair value hierarchy, the credit value adjustments utilize level 3 inputs, such as estimates of current credit spreads. The Company has determined that the impact of the credit valuation adjustments is not significant to the overall valuation of these derivatives. As a result, the Company has classified its derivative valuations for these instruments in level 2 of the fair value hierarchy. The Company’s policy is to measure counterparty credit risk quarterly for all derivative instruments subject to master netting arrangements consistent with how market participants would price the net risk exposure at the measurement date. The Company also has certain derivative instruments associated with the Bank’s mortgage-banking activities. These derivative instruments include interest rate lock commitments on prospective residential mortgage loans and forward commitments to sell these loans to investors on a best efforts delivery basis and To Be Announced securities for mandatory delivery contracts. The fair value of these derivative instruments is measured using observable market prices for similar instruments and is classified as a level 2 measurement. The Company’s level 3 liability consists of a derivative contract with the purchaser of 192,163 shares of Visa Class B common stock. Pursuant to the agreement, the Company retains the risks associated with the ultimate conversion of the Visa Class B common shares into shares of Visa Class A common stock, such that the counterparty will be compensated for any dilutive adjustments to the conversion ratio and the Company will be compensated for any anti-dilutive adjustments to the ratio. The agreement also requires periodic payments by the Company to the counterparty calculated by reference to the market price of Visa Class A common shares at the time of sale and a fixed rate of interest that steps up once after the eighth scheduled quarterly payment. The fair value of the liability is determined using a discounted cash flow methodology. The significant unobservable inputs used in the fair value measurement are the Company’s own assumptions about estimated changes in the conversion rate of the Visa Class B common shares into Visa Class A common shares, the date on which such conversion is expected to occur and the estimated growth rate of the Visa Class A common share price. Refer to Note 5 – Derivatives for information about the derivative contract with the counterparty. The Company believes its valuation methods for its assets and liabilities carried at fair value are appropriate; however, the use of different methodologies or assumptions, particularly as applied to level 3 assets and liabilities, could have a material effect on the computation of their estimated fair values. Changes in Level 3 Fair Value Measurements and Quantitative Information about Level 3 Fair Value Measurements The table below presents a rollforward of the amounts on the consolidated balance sheets for the three months ended March 31, 2023 and the year ended December 31, 2022 for financial instruments of a material nature that are classified within level 3 of the fair value hierarchy and are measured at fair value on a recurring basis: ($ in thousands) Balance at December 31, 2021 $ 4,116 Cash settlement ( 2,429 ) Losses included in earnings 196 Balance at December 31, 2022 1,883 Conversion rate adjustment ( 283 ) Cash settlement ( 430 ) Losses included in earnings 233 Balance at March 31, 2023 $ 1,403 The table below provides an overview of the valuation techniques and significant unobservable inputs used in those techniques to measure the financial instrument measured on a recurring basis and classified within level 3 of the valuation. The range of sensitivities that management utilized in its fair value calculations is deemed acceptable in the industry with respect to the identified financial instrument. ($ in thousands)  Fair Value Level 3 Class March 31, 2023 December 31, 2022 Derivative liability $ 1,403 $ 1,883 Valuation technique Discounted cash flow Discounted cash flow Unobservable inputs: Visa Class A appreciation - range 6 - 12 % 6 - 12 % Visa Class A appreciation - weighted average 9 % 9 % Conversion rate - range 1.60 x- 1.59 x 1.61 x- 1.60 x Conversion rate -weighted average 1.5950 x 1.6030 x Time until resolution 3 - 9 months 3 - 12 months The Company’s policy is to recognize transfers between valuation hierarchy levels as of the end of a reporting period. Fair Value of Assets Measured on a Nonrecurring Basis Certain assets and liabilities are measured at fair value on a nonrecurring basis. Collateral-dependent loans individually evaluated for credit loss loans are level 2 assets measured at the fair value of the underlying collateral based on independent third-party appraisals that take into consideration market-based information such as recent sales activity for similar assets in the property’s market. Other real estate owned and foreclosed assets, including both foreclosed property and surplus banking property, are level 3 assets that are adjusted to fair value, less estimated selling costs, upon transfer from loans or property and equipment. Subsequently, other real estate owned and foreclosed assets is carried at the lower of carrying value or fair value less estimated selling costs. Fair values are determined by sales agreement or third-party appraisals as discounted for estimated selling costs, information from comparable sales, and marketability of the assets. The fair value information presented below is not as of the period end, rather it was as of the date the fair value adjustment was recorded during the twelve months for each of the dates presented below, and excludes nonrecurring fair value measurements of assets no longer on the balance sheet. The following tables present the Company’s financial assets that are measured at fair value on a nonrecurring basis for each of the fair value hierarchy levels.  March 31, 2023 ($ in thousands) Level 1 Level 2 Level 3 Total Collateral-dependent loans individually evaluated for credit loss $ — $ 13,212 $ — $ 13,212 Other real estate owned and foreclosed assets, net — — 1,976 1,976 Total nonrecurring fair value measurements $ — $ 13,212 $ 1,976 $ 15,188  December 31, 2022 ($ in thousands) Level 1 Level 2 Level 3 Total Collateral-dependent loans individually evaluated for credit loss $ — $ 4,692 $ — $ 4,692 Other real estate owned and foreclosed assets, net — — 2,017 2,017 Total nonrecurring fair value measurements $ — $ 4,692 $ 2,017 $ 6,709 Accounting guidance from the FASB requires the disclosure of estimated fair value information about certain on- and off-balance sheet financial instruments, including those financial instruments that are not measured and reported at fair value on a recurring basis. The significant methods and assumptions used by the Company to estimate the fair value of financial instruments are discussed below. Cash, Short-Term Investments and Federal Funds Sold – For these short-term instruments, the carrying amount is a reasonable estimate of fair value. Securities – The fair value measurement for securities available for sale was discussed earlier in the note. The same measurement techniques were applied to the valuation of securities held to maturity. Loans, Net – The fair value measurement for certain impaired loans was described earlier in this note. For the remaining portfolio, fair values were generally determined by discounting scheduled cash flows using discount rates determined with reference to current market rates at which loans with similar terms would be made to borrowers of similar credit quality. Loans Held for Sale – These loans are either carried under the fair value option or at the lower of cost or market. Given the short duration of these instruments, the carrying amount is considered a reasonable estimate of fair value. Deposits – The accounting guidance requires that the fair value of deposits with no stated maturity, such as noninterest-bearing demand deposits, interest-bearing checking and savings accounts, be assigned fair values equal to amounts payable upon demand (“carrying amounts”). The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for deposits of similar remaining maturities. Federal Funds Purchased and Securities Sold under Agreements to Repurchase – For these short-term liabilities, the carrying amount is a reasonable estimate of fair value. Short-Term FHLB Borrowings – At March 31, 2023, short-term FHLB borrowings was comprised of several fixed-rate instruments for which the fair value was estimated by discounting the future contractual cash flows using current market rates at which borrowings with similar terms and options could be obtained and, therefore, is reflected as level 2 in respective the table below. At December 31, 2022, short-term FHLB borrowings was comprised of one fixed-rate instrument entered into on December 30, 2022, and maturing on January 3, 2023; as such, the carrying amount of the instrument is a reasonable estimate of the fair value and is reflected as level 1 in the respective table below. Long-Term Debt – The fair value is estimated by discounting the future contractual cash flows using current market rates at which debt with similar terms could be obtained. Derivative Financial Instruments – The fair value measurement for derivative financial instruments was described earlier in this note. The following tables present the estimated fair values of the Company’s financial instruments by fair value hierarchy levels and the corresponding carrying amounts.  March 31, 2023  Total Fair Carrying ($ in thousands) Level 1 Level 2 Level 3 Value Amount Financial assets: Cash, interest-bearing bank deposits, and federal funds sold $ 2,882,521 $ — $ — $ 2,882,521 $ 2,882,521 Available for sale securities — 5,565,620 — 5,565,620 5,565,620 Held to maturity securities — 2,623,760 — 2,623,760 2,825,064 Loans, net — 13,212 22,970,797 22,984,009 23,095,138 Loans held for sale — 23,436 — 23,436 23,436 Derivative financial instruments — 91,945 — 91,945 91,945 Financial liabilities: Deposits $ — $ — $ 29,587,071 $ 29,587,071 $ 29,613,070 Federal funds purchased 350 — — 350 350 Securities sold under agreements to repurchase 419,147 — — 419,147 419,147 FHLB short-term borrowings — 3,100,275 — 3,100,275 3,100,000 Long-term debt — 206,659 — 206,659 242,115 Derivative financial instruments — 214,798 1,403 216,201 216,201  December 31, 2022 ($ in thousands) Level 1 Level 2 Level 3 Total Fair Carrying Financial assets: Cash, interest-bearing bank deposits, and federal funds sold $ 888,519 $ — $ — $ 888,519 $ 888,519 Available for sale securities — 5,556,041 — 5,556,041 5,556,041 Held to maturity securities — 2,615,398 — 2,615,398 2,852,495 Loans, net — 4,692 22,132,683 22,137,375 22,806,257 Loans held for sale — 26,385 — 26,385 26,385 Derivative financial instruments — 109,497 — 109,497 109,497 Financial liabilities: Deposits $ — $ — $ 29,041,635 $ 29,041,635 $ 29,070,349 Federal funds purchased 1,850 — — 1,850 1,850 Securities sold under agreements to repurchase 444,421 — — 444,421 444,421 FHLB short-term borrowings 1,425,000 — — 1,425,000 1,425,000 Long-term debt — 200,060 — 200,060 242,077 Derivative financial instruments — 202,238 1,883 204,121 204,121

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2023
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	14. Recent Accounting Pronouncements Accounting Standards Adopted During the Three Months Ended March 31, 2023 In March 2022, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2022-01, "Derivatives and Hedging (Topic 815): Fair Value Hedging - Portfolio Layer Method," to provide clarification of and expand upon certain provisions of Topic 815 that became effective with the issuance of ASU 2017-12. The amendments in this update include the following provisions: (1) expand the current last-of-layer method to allow multiple hedged layers of a single closed portfolio and, accordingly, renaming the last-of-layer method to the portfolio layer method; (2) expand the scope of the portfolio layer method to include nonprepayable financial assets; (3) specify that eligible hedging instruments in a single-layer hedge may include spot-starting or forward-starting constant-notional swaps, or spot or forward-starting amortizing-notional swaps and that the number of hedged layers corresponds with the number of hedges designated; (4) provide additional guidance on the accounting for and disclosure of hedge basis adjustments that are applicable to the portfolio layer method whether a single hedged layer or multiple hedged layers are designated, and; (5) specify how hedge basis adjustments should be considered when determining credit losses for the assets included in the closed portfolio. The amendments in this update apply to all entities that elect to apply the portfolio layer method of hedge accounting in accordance with Topic 815. The amendments in this update were effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. Upon adoption, any entity may designate multiple hedged layers of a single closed portfolio solely on a prospective basis. All entities are required to apply the amendments related to hedge basis adjustments under the portfolio layer method, except for those related to disclosures, on a modified retrospective basis by means of a cumulative-effect adjustment to the opening balance of retained earnings on the initial application date. Entities have the option to apply the amendments related to disclosures on a prospective basis from the initial application date or on a retrospective basis to each prior period presented after the date of adoption of the amendments in Update 2017-12. Within 30 days after the adoption, an entity may reclassify debt securities classified in the held-to-maturity category at the date of adoption to the available-for-sale category only if the entity applies portfolio layer method hedging to one or more closed portfolios that include those debt securities. The Company adopted this standard effective January 1, 2023, and elected to apply amendments to disclose on a prospective basis with no reclassification of debt securities from held to maturity to available for sale. The impact of adoption was not material to the Company's consolidated financial position or results of operations. In March 2022, the FASB issued ASU 2022-02, "Financial Instruments: Credit Losses (Topic 326) - Troubled Debt Restructurings and Vintage Disclosures." The amendments in this update cover two issues: (1) the elimination of TDR recognition and measurement guidance as prescribed by ASC 310-40 and, instead, require that an entity evaluate (consistent with the accounting for other loan modifications) whether the modification represents a new loan or a continuation of an existing loan. The amendments enhance existing disclosure requirements and introduce new requirements related to certain modifications of receivables made to borrowers experiencing financial difficulty; and, (2) for public business entities, the requirement that an entity disclose current-period gross write-offs by year of origination for financing receivables and net investment in leases within the scope of Subtopic 326-20. Gross write-off information must be included in the vintage disclosures required for public business entities in accordance with paragraph 326-20-50-6, which requires that an entity disclose the amortized cost basis of financing receivables by credit quality indicator and class of financing receivable by year of origination. The amendments in this update were effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. For the elimination of recognition and measurement guidance on troubled debt restructurings by creditors in Subtopic 310-40, an entity may elect to apply a modified retrospective transition by means of a cumulative-effect adjustment to the opening retained earnings as of the beginning of the fiscal year of adoption, or a prospective approach applied to modifications occurring after the date of adoption. The remainder of amendments should be applied prospectively. The Company adopted this standard effective January 1, 2023, on a prospective basis for all amendments. The adoption of this standard was not material to the Company's consolidated financial position or results of operations. Accounting Standards Issued But Not Yet Adopted In March 2023, 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,” to allow reporting entities to have the option to elect and expand the use of the proportional amortization method of accounting for qualifying tax credit equity investments structures that meet certain criteria. Existing guidance under Subtopic 323-70 provides the option to apply the proportional amortization method only to investments in low-income-housing tax credit structures; equity investments in other tax credit structures are typically accounted for under Topic 321, Investments – Equity Securities. Under the provisions of this update, the accounting policy election to apply the proportional amortization method can be made on a tax-credit-program-by-tax-credit-program basis for programs that meeting certain conditions and is not made at the reporting entity or individual investment level. Application of the proportional amortization method to any eligible tax credit investments will result in the cost of the investment being amortized in proportion to the income tax credits and other income tax benefits received, with the amortization being presented as a component of income tax expense (benefit), as opposed to current guidance under Topic 321, where any investment income, gains and losses and tax credits are all presented gross in the statement of income. For public business entities, the amendments are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for all entities in any interim period; if an entity adopts the amendments in an interim period, it shall adopt them as of the beginning of the fiscal year that includes that interim period. The amendments in this update must be applied on either a modified retrospective or a retrospective basis. The Company is currently assessing the provisions of this guidance, but does not expect adoption to have a material impact to its consolidated financial position or results of operations.

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of Hancock Whitney Corporation and all other entities in which it has a controlling interest (the “Company”). The financial statements include all adjustments that are, in the opinion of management, necessary to fairly state the Company’s financial condition, results of operations, changes in stockholders’ equity and cash flows for the interim periods presented. The Company has also evaluated all subsequent events for potential recognition and disclosure through the date of the filing of this Quarterly Report on Form 10-Q. Some financial information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”) have been condensed or omitted in this Quarterly Report on Form 10-Q pursuant to Securities and Exchange Commission rules and regulations. These financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022. Financial information reported in these financial statements is not necessarily indicative of the Company’s financial condition, results of operations, or cash flows for any other interim or annual period. Certain prior period amounts have been reclassified to conform to the current period presentation. Such changes include expanding the presentation of the credit quality metrics by vintage to portfolio class from portfolio segment in Note 3 – Loans. These changes in presentation did not have a material impact on the Company's financial condition or operating results.
Use of Estimates	Use of Estimates The accounting principles the Company follows and the methods for applying these principles conform to GAAP and general practices followed by the banking industry. These accounting principles require management to make estimates and assumptions about future events that affect the amounts reported in the consolidated financial statements and the accompanying notes. Actual results could differ from those estimates.
Accounting Policies	Accounting Policies There were no material changes or developments during the reporting period with respect to methodologies that the Company uses when applying what management believes are critical accounting policies and developing critical accounting estimates as disclosed in its Annual Report on Form 10-K for the year ended December 31, 2022. On January 1, 2023, the Company adopted Accounting Standards Update (“ASU”) 2022-02 "Financial Instruments: Credit Losses (Topic 326) - Troubled Debt Restructurings and Vintage Disclosures." The amendments in this update eliminated the recognition and measurement guidance as prescribed by Accounting Standards Codification (“ASC”) 310-40 for troubled debt restructurings (“TDRs”) and introduced new requirements for certain modifications of loans to borrowers experiencing financial difficulty (“MEFDs”). Qualifying modifications are interest rate reductions, other-than-insignificant payment delays, term extensions, or any combination of these terms. Our MEFD policy generally considers six months or less to be the time frame that is considered insignificant for payment delays and/or term extensions. Multiple payment delays and/or term extensions to borrowers experiencing financial difficulty within a twelve month period are evaluated collectively. Qualifying modified loans are subject to reporting requirements for the twelve month period following the modification. This standard was adopted on a prospective basis and therefore, only modifications on or after January 1, 2023 are evaluated and reported under the new requirements. Like TDRs, MEFDs can remain on nonaccrual, move to nonaccrual, return to accrual, or continue to accrue interest, depending on the individual facts and circumstances of the borrower. As allowed by the standard, the Company has elected to evaluate these modified loans for credit loss consistent with policies for the non-modified portfolio, which includes individually evaluating for specific reserves all nonaccrual MEFDs over our existing materiality threshold and collectively evaluating credit loss for all other MEFDs, including those that continue to accrue interest. The credit loss methodology for MEFDs is the same as described in the Allowance for Credit Losses section in the Summary of Significant Accounting Policies disclosed in the Note 1 of the 2022 Form 10-K. Refer to Note 3 – Loans for disclosures related to reportable MEFDs entered into since adoption, as well as gross charge-offs by class in our vintage disclosures, also required by this standard. Refer to Note 14 – Recent Accounting Pronouncements for further discussion of accounting standards adopted and issued but not yet adopted at March 31, 2023 and the anticipated impact to the Company’s financial statements.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2023
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Amortized Cost and Fair Value of Debt Securities Available for Sale	March 31, 2023 December 31, 2022 Gross Gross Gross Gross Securities Available for Sale Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair ($ in thousands) Cost Gains Losses Value Cost Gains Losses Value U.S. Treasury and government agency securities $ 113,016 $ 287 $ 1,788 $ 111,515 $ 113,211 $ — $ 2,346 $ 110,865 Municipal obligations 206,219 247 1,997 204,469 207,014 59 3,981 203,092 Residential mortgage-backed securities 2,583,935 240 364,911 2,219,264 2,655,381 224 398,619 2,256,986 Commercial mortgage-backed securities 3,239,281 2,899 299,575 2,942,605 3,234,278 2,032 342,880 2,893,430 Collateralized mortgage obligations 72,884 — 5,241 67,643 76,830 — 6,242 70,588 Corporate debt securities 23,500 — 3,376 20,124 23,500 — 2,420 21,080  $ 6,238,835 $ 3,673 $ 676,888 $ 5,565,620 $ 6,310,214 $ 2,315 $ 756,488 $ 5,556,041
Amortized Cost and Fair Value of Debt Securities Held to Maturity	March 31, 2023 December 31, 2022 Gross Gross Gross Gross Securities Held to Maturity Amortized Unrealized Unrealized Fair Amortized Unrealized Unrealized Fair ($ in thousands) Cost Gains Losses Value Cost Gains Losses Value U.S. Treasury and government agency securities $ 427,643 $ 824 $ 41,538 $ 386,929 $ 426,454 $ 21 $ 49,044 $ 377,431 Municipal obligations 696,471 1,987 19,262 679,196 698,908 753 26,558 673,103 Residential mortgage-backed securities 715,499 — 63,526 651,973 734,478 — 72,532 661,946 Commercial mortgage-backed securities 944,292 — 77,653 866,639 948,691 — 87,211 861,480 Collateralized mortgage obligations 41,159 — 2,136 39,023 43,964 — 2,526 41,438  $ 2,825,064 $ 2,811 $ 204,115 $ 2,623,760 $ 2,852,495 $ 774 $ 237,871 $ 2,615,398
Proceeds from Gross Gains on and Gross Losses on Sale of Securities	The following table presents the proceeds from, gross gains on, and gross losses on sales of securities during the three months ended March 31, 2023 and 2022. Net gains or losses are reflected in the "Securities transactions, net" line item on the Consolidated Statements of Income. Three Months Ended ($ in thousands) 2023 2022 Proceeds $ — $ 73,219 Gross gains — — Gross losses — 87 Net gain (loss) $ — $ ( 87 )
Available for Sale Securities [Member]
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Amortized Cost and Fair Value of Debt Securities by Contractual Maturity	Debt Securities Available for Sale Amortized Fair ($ in thousands) Cost Value Due in one year or less $ 72 $ 72 Due after one year through five years 1,024,989 979,364 Due after five years through ten years 2,980,929 2,699,847 Due after ten years 2,232,845 1,886,337 Total available for sale debt securities $ 6,238,835 $ 5,565,620
Securities with Unrealized Losses	Available for Sale March 31, 2023 Losses < 12 months Losses 12 months or > Total ($ in thousands) Fair Gross Fair Gross Fair Gross U.S. Treasury and government agency securities $ 49,332 $ 382 $ 8,070 $ 1,406 $ 57,402 $ 1,788 Municipal obligations 85,570 649 86,444 1,348 172,014 1,997 Residential mortgage-backed securities 137,406 4,437 2,071,526 360,474 2,208,932 364,911 Commercial mortgage-backed securities 318,876 14,695 2,570,771 284,880 2,889,647 299,575 Collateralized mortgage obligations — — 67,643 5,241 67,643 5,241 Corporate debt securities 1,820 180 17,804 3,196 19,624 3,376  $ 593,004 $ 20,343 $ 4,822,258 $ 656,545 $ 5,415,262 $ 676,888 Available for Sale December 31, 2022 Losses < 12 months Losses 12 months or > Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized ($ in thousands) Value Losses Value Losses Value Losses U.S. Treasury and government agency securities $ 102,607 754 $ 8,258 $ 1,592 $ 110,865 $ 2,346 Municipal obligations 192,334 3,981 — — 192,334 3,981 Residential mortgage-backed securities 636,060 49,790 1,611,832 348,829 2,247,892 398,619 Commercial mortgage-backed securities 1,489,974 114,195 1,351,530 228,685 2,841,504 342,880 Collateralized mortgage obligations 41,703 3,275 28,884 2,967 70,587 6,242 Corporate debt securities 13,194 1,306 7,386 1,114 20,580 2,420  $ 2,475,872 $ 173,301 $ 3,007,890 $ 583,187 $ 5,483,762 $ 756,488
Held-to-maturity Securities [Member]
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Amortized Cost and Fair Value of Debt Securities by Contractual Maturity	Debt Securities Held to Maturity Amortized Fair ($ in thousands) Cost Value Due in one year or less $ 11,637 $ 11,573 Due after one year through five years 538,020 520,589 Due after five years through ten years 918,433 851,024 Due after ten years 1,356,974 1,240,574 Total held to maturity securities $ 2,825,064 $ 2,623,760
Securities with Unrealized Losses	Held to maturity March 31, 2023 Losses < 12 months Losses 12 months or > Total  Gross Gross Gross  Fair Unrealized Fair Unrealized Fair Unrealized ($ in thousands) Value Losses Value Losses Value Losses U.S. Treasury and government agency securities $ 49,176 $ 2,085 $ 305,813 $ 39,453 $ 354,989 $ 41,538 Municipal obligations 240,561 1,452 183,368 17,810 423,929 19,262 Residential mortgage-backed securities 225,019 9,134 426,955 54,392 651,974 63,526 Commercial mortgage-backed securities 159,220 6,140 707,420 71,513 866,640 77,653 Collateralized mortgage obligations 2,662 30 36,360 2,106 39,022 2,136  $ 676,638 $ 18,841 $ 1,659,916 $ 185,274 $ 2,336,554 $ 204,115 Held to maturity December 31, 2022 Losses < 12 months Losses 12 months or > Total  Gross Gross Gross  Fair Unrealized Fair Unrealized Fair Unrealized ($ in thousands) Value Losses Value Losses Value Losses U.S. Treasury and government agency securities $ 145,893 $ 13,245 $ 226,499 $ 35,799 $ 372,392 $ 49,044 Municipal obligations 560,288 8,878 64,346 17,680 624,634 26,558 Residential mortgage-backed securities 391,146 30,515 270,800 42,017 661,946 72,532 Commercial mortgage-backed securities 697,827 56,899 163,653 30,312 861,480 87,211 Collateralized mortgage obligations 41,438 2,526 — — 41,438 2,526  $ 1,836,592 $ 112,063 $ 725,298 $ 125,808 $ 2,561,890 $ 237,871

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2023
Accounts Notes And Loans Receivable [Line Items]
Loans, Net of Unearned Income	The following table presents loans, net of unearned income, by portfolio class at March 31, 2023 and December 31, 2022. March 31, December 31, ($ in thousands) 2023 2022 Commercial non-real estate $ 10,013,482 $ 10,146,453 Commercial real estate - owner occupied 3,050,748 3,033,058 Total commercial and industrial 13,064,230 13,179,511 Commercial real estate - income producing 3,758,455 3,560,991 Construction and land development 1,726,916 1,703,592 Residential mortgages 3,329,793 3,092,605 Consumer 1,525,129 1,577,347 Total loans $ 23,404,523 $ 23,114,046
Allowance for Credit Losses by Portfolio Class	The following tables present activity in the allowance for credit losses (ACL) by portfolio class for the three months ended March 31, 2023 and 2022, as well as the corresponding recorded investment in loans at the end of each period. Commercial Total Commercial Commercial real estate- commercial real estate- Construction non-real owner and income and land Residential ($ in thousands) estate occupied industrial producing development mortgages Consumer Total Three Months Ended March 31, 2023 Allowance for credit losses Allowance for loan losses: Beginning balance $ 96,461 $ 48,284 $ 144,745 $ 71,961 $ 30,498 $ 32,464 $ 28,121 $ 307,789 Charge-offs ( 4,528 ) — ( 4,528 ) — ( 61 ) ( 20 ) ( 3,363 ) ( 7,972 ) Recoveries 1,033 195 1,228 — 6 181 838 2,253 Net provision for loan losses ( 320 ) ( 813 ) ( 1,133 ) 4,231 459 1,916 1,842 7,315 Ending balance - allowance for loan losses $ 92,646 $ 47,666 $ 140,312 $ 76,192 $ 30,902 $ 34,541 $ 27,438 $ 309,385 Reserve for unfunded lending commitments: Beginning balance $ 4,984 $ 302 $ 5,286 $ 1,395 $ 25,110 $ 31 $ 1,487 $ 33,309 Provision for losses on unfunded commitments ( 191 ) 22 ( 169 ) 493 ( 1,487 ) ( 14 ) ( 118 ) ( 1,295 ) Ending balance - reserve for unfunded lending commitments 4,793 324 5,117 1,888 23,623 17 1,369 32,014 Total allowance for credit losses $ 97,439 $ 47,990 $ 145,429 $ 78,080 $ 54,525 $ 34,558 $ 28,807 $ 341,399 Allowance for loan losses: Individually evaluated $ — $ — $ — $ — $ — $ — $ — $ — Collectively evaluated 92,646 47,666 140,312 76,192 30,902 34,541 27,438 309,385 Allowance for loan losses $ 92,646 $ 47,666 $ 140,312 $ 76,192 $ 30,902 $ 34,541 $ 27,438 $ 309,385 Reserve for unfunded lending commitments: Individually evaluated $ — $ — $ — $ — $ — $ — $ — $ — Collectively evaluated 4,793 324 5,117 1,888 23,623 17 1,369 32,014 Reserve for unfunded lending commitments: $ 4,793 $ 324 $ 5,117 $ 1,888 $ 23,623 $ 17 $ 1,369 $ 32,014 Total allowance for credit losses $ 97,439 $ 47,990 $ 145,429 $ 78,080 $ 54,525 $ 34,558 $ 28,807 $ 341,399 Loans: Individually evaluated $ 10,273 $ 684 $ 10,957 $ 1,120 $ — $ 1,135 $ — $ 13,212 Collectively evaluated 10,003,209 3,050,064 13,053,273 3,757,335 1,726,916 3,328,658 1,525,129 23,391,311 Total loans $ 10,013,482 $ 3,050,748 $ 13,064,230 $ 3,758,455 $ 1,726,916 $ 3,329,793 $ 1,525,129 $ 23,404,523
Composition of Nonaccrual Loans and Without an Allowance for Loan Loss by Portfolio Class	The following table shows the composition of nonaccrual loans and those without an allowance for loan loss, by portfolio class. March 31, 2023 December 31, 2022 ($ in thousands) Total nonaccrual Nonaccrual without allowance for loan loss Total nonaccrual Nonaccrual without allowance for loan loss Commercial non-real estate $ 13,302 $ 10,273 $ 4,020 $ 941 Commercial real estate - owner occupied 2,393 684 1,461 692 Total commercial and industrial 15,695 10,957 5,481 1,633 Commercial real estate - income producing 1,501 1,120 1,240 1,174 Construction and land development 340 — 309 — Residential mortgages 30,111 1,135 25,269 1,884 Consumer 6,697 — 6,692 — Total loans $ 54,344 $ 13,212 $ 38,991 4,691
Provides Detail by Portfolio Class for Reportable MEFDs	The table below provides detail by portfolio class for reportable MEFDs entered into during the three months ended March 31, 2023. March 31, 2023 ($ in thousands) Balance Percentage of portfolio class Commercial non-real estate $ 934 0.01 % Commercial real estate - owner occupied 684 0.02 % Total commercial and industrial 1,618 0.01 % Commercial real estate - income producing — — Construction and land development — — Residential mortgages — — Consumer — — Total reportable modified loans $ 1,618 0.01 %
Aging Analysis of Past Due Loans by Portfolio Class	The tables below present the aging analysis of past due loans by portfolio class at March 31, 2023 and December 31, 2022. March 31, 2023 30-59 60-89 Greater Total Current Total Recorded ($ in thousands) Commercial non-real estate $ 31,691 $ 17,026 $ 11,029 $ 59,746 $ 9,953,736 $ 10,013,482 $ 8,492 Commercial real estate - owner occupied 2,670 2,029 2,567 7,266 3,043,482 3,050,748 1,399 Total commercial and industrial 34,361 19,055 13,596 67,012 12,997,218 13,064,230 9,891 Commercial real estate - income producing 175 — 2,653 2,828 3,755,627 3,758,455 1,214 Construction and land development 2,304 359 217 2,880 1,724,036 1,726,916 126 Residential mortgages 29,903 8,055 13,684 51,642 3,278,151 3,329,793 167 Consumer 6,590 4,506 4,695 15,791 1,509,338 1,525,129 1,757 Total $ 73,333 $ 31,975 $ 34,845 $ 140,153 $ 23,264,370 $ 23,404,523 $ 13,155 December 31, 2022 30-59 60-89 Greater Total Current Total Recorded ($ in thousands) Commercial non-real estate $ 4,050 $ 21,329 $ 3,418 $ 28,797 $ 10,117,656 $ 10,146,453 $ 996 Commercial real estate - owner occupied 19,069 3,346 1,894 24,309 3,008,749 3,033,058 1,623 Total commercial and industrial 23,119 24,675 5,312 53,106 13,126,405 13,179,511 2,619 Commercial real estate - income producing 879 — 1,174 2,053 3,558,938 3,560,991 — Construction and land development 4,029 242 133 4,404 1,699,188 1,703,592 54 Residential mortgages 28,208 11,056 17,346 56,610 3,035,995 3,092,605 293 Consumer 8,845 2,806 4,407 16,058 1,561,289 1,577,347 1,619 Total $ 65,080 $ 38,779 $ 28,372 $ 132,231 $ 22,981,815 $ 23,114,046 $ 4,585
Credit Quality Indicators by Segment and Portfolio Class	The following tables present credit quality disclosures of amortized cost by portfolio class and vintage for term loans and by revolving and revolving converted to amortizing at March 31, 2023 and December 31, 2022. The Company defines vintage as the later of origination, renewal or modification date. The gross charge-offs presented in the table are for the three months ended March 31, 2023. Term Loans Revolving Loans March 31, 2023 Amortized Cost Basis by Origination Year Revolving Converted to ($ in thousands) 2023 2022 2021 2020 2019 Prior Loans Term Loans Total Commercial Non-Real Estate: Pass $ 443,067 $ 2,385,284 $ 1,362,105 $ 592,762 $ 505,331 $ 958,298 $ 3,214,349 $ 49,851 $ 9,511,047 Pass-Watch 18,434 54,455 32,893 30,343 7,487 58,113 73,146 2,196 277,067 Special Mention 32,611 5,560 522 1,837 4,198 1,145 8,984 141 54,998 Substandard 21,424 21,686 14,027 30,909 21,450 12,123 47,928 823 170,370 Doubtful — — — — — — — — — Total Commercial Non- $ 515,536 $ 2,466,985 $ 1,409,547 $ 655,851 $ 538,466 $ 1,029,679 $ 3,344,407 $ 53,011 $ 10,013,482 Gross Charge-offs $ — $ 309 $ 170 $ 463 $ 12 $ 33 $ 2,993 $ 548 $ 4,528 Commercial Real Estate - Owner Occupied: Pass $ 86,006 $ 643,498 $ 641,601 $ 526,654 $ 315,352 $ 677,090 $ 34,237 $ 12,848 $ 2,937,286 Pass-Watch 1,985 8,785 4,558 3,668 15,513 17,228 954 — 52,691 Special Mention — 46 — 543 603 6,360 — — 7,552 Substandard 18,506 6,957 680 7,453 4,734 13,889 1,000 — 53,219 Doubtful — — — — — — — — — Total Commercial Real $ 106,497 $ 659,286 $ 646,839 $ 538,318 $ 336,202 $ 714,567 $ 36,191 $ 12,848 $ 3,050,748 Gross Charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial Real Estate - Income Producing: Pass $ 122,528 $ 887,881 $ 889,960 $ 705,277 $ 398,028 $ 514,955 $ 114,746 $ 65 $ 3,633,440 Pass-Watch 18,723 1,191 37 59,847 22,922 13,238 402 — 116,360 Special Mention 985 — — 178 — 371 — — 1,534 Substandard 3,535 397 319 1,214 8 1,648 — — 7,121 Doubtful — — — — — — — — — Total Commercial Real $ 145,771 $ 889,469 $ 890,316 $ 766,516 $ 420,958 $ 530,212 $ 115,148 $ 65 $ 3,758,455 Gross Charge-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Construction and Land Development: Pass $ 155,497 $ 748,153 $ 545,932 $ 103,183 $ 7,786 $ 24,241 $ 126,158 $ 5,379 $ 1,716,329 Pass-Watch 2,408 3,185 2,670 96 522 611 368 — 9,860 Special Mention — — — — 191 — — — 191 Substandard — 51 51 — 11 423 — — 536 Doubtful — — — — — — — — — Total Construction and $ 157,905 $ 751,389 $ 548,653 $ 103,279 $ 8,510 $ 25,275 $ 126,526 $ 5,379 $ 1,726,916 Gross Charge-offs $ — $ 7 $ 54 $ — $ — $ — $ — $ — $ 61 Residential Mortgage: Performing $ 173,196 $ 628,643 $ 800,082 $ 516,534 $ 187,232 $ 990,957 $ 3,038 — $ 3,299,682 Nonperforming 70 2,452 3,052 338 1,610 22,589 — — 30,111 Total Residential Mortgage $ 173,266 $ 631,095 $ 803,134 $ 516,872 $ 188,842 $ 1,013,546 $ 3,038 $ — $ 3,329,793 Gross Charge-offs $ — $ — $ — $ — $ — $ 20 $ — $ — $ 20 Consumer Loans: Performing $ 31,666 $ 83,306 $ 53,900 $ 40,880 $ 53,213 $ 69,745 $ 1,182,108 $ 3,613 $ 1,518,431 Nonperforming 32 172 362 573 610 4,081 162 706 6,698 Total Consumer $ 31,698 $ 83,478 $ 54,262 $ 41,453 $ 53,823 $ 73,826 $ 1,182,270 $ 4,319 $ 1,525,129 Gross Charge-offs $ — $ 294 $ 329 $ 43 $ 152 $ 236 $ 2,013 $ 296 $ 3,363 Term Loans Revolving Loans December 31, 2022 Amortized Cost Basis by Origination Year Revolving Converted to ($ in thousands) 2022 2021 2020 2019 2018 Prior Loans Term Loans Total Commercial Non-Real Estate: Pass $ 2,600,656 $ 1,450,689 $ 679,355 $ 569,842 $ 267,025 $ 763,122 $ 3,193,769 $ 116,659 $ 9,641,117 Pass-Watch 68,307 38,949 31,841 11,757 8,237 49,577 66,339 9,836 284,843 Special Mention 30,276 13,625 2,443 4,406 322 1,654 25,184 2,070 79,980 Substandard 29,667 13,807 11,766 21,667 12,792 1,250 39,213 10,351 140,513 Doubtful — — — — — — — — — Total Commercial Non- $ 2,728,906 $ 1,517,070 $ 725,405 $ 607,672 $ 288,376 $ 815,603 $ 3,324,505 $ 138,916 $ 10,146,453 Commercial Real Estate - Owner Occupied: Pass $ 630,121 $ 650,742 $ 537,849 $ 328,364 $ 265,437 $ 447,707 $ 46,730 $ 5,107 $ 2,912,057 Pass-Watch 7,129 5,299 3,743 13,301 10,872 7,706 893 150 49,093 Special Mention — — 544 822 1,231 3,670 — — 6,267 Substandard 19,899 547 6,715 7,663 7,543 21,465 1,000 809 65,641 Doubtful — — — — — — — — — Total Commercial Real $ 657,149 $ 656,588 $ 548,851 $ 350,150 $ 285,083 $ 480,548 $ 48,623 $ 6,066 $ 3,033,058 Commercial Real Estate - Income Producing: Pass $ 894,522 $ 795,378 $ 660,235 $ 420,435 $ 232,145 $ 317,446 $ 113,487 $ 7,000 $ 3,440,648 Pass-Watch 1,027 18,070 58,256 20,865 12,066 836 467 — 111,587 Special Mention 235 — 708 2,325 166 376 — — 3,810 Substandard 415 — 2,785 8 1,240 498 — — 4,946 Doubtful — — — — — — — — — Total Commercial Real $ 896,199 $ 813,448 $ 721,984 $ 443,633 $ 245,617 $ 319,156 $ 113,954 $ 7,000 $ 3,560,991 Construction and Land Development: Pass $ 663,735 $ 711,731 $ 148,579 $ 9,198 $ 15,360 $ 10,854 $ 128,842 $ 2,457 $ 1,690,756 Pass-Watch 8,233 1,944 643 559 199 450 69 — 12,097 Special Mention — — — 196 — — — — 196 Substandard 35 55 — 12 61 380 — — 543 Doubtful — — — — — — — — — Total Construction and $ 672,003 $ 713,730 $ 149,222 $ 9,965 $ 15,620 $ 11,684 $ 128,911 $ 2,457 $ 1,703,592 Residential Mortgage: Performing $ 631,339 $ 694,104 $ 518,705 $ 192,431 $ 107,675 $ 918,918 $ 3,147 $ — $ 3,066,319 Nonperforming 1,058 2,434 716 1,196 2,080 18,802 — — 26,286 Total Residential $ 632,397 $ 696,538 $ 519,421 $ 193,627 $ 109,755 $ 937,720 $ 3,147 $ — $ 3,092,605 Consumer Loans: Performing $ 103,742 $ 58,248 $ 45,641 $ 62,715 $ 41,559 $ 40,489 $ 1,212,958 $ 4,834 $ 1,570,186 Nonperforming 193 198 228 758 381 3,341 459 1,603 7,161 Total Consumer $ 103,935 $ 58,446 $ 45,869 $ 63,473 $ 41,940 $ 43,830 $ 1,213,417 $ 6,437 $ 1,577,347
Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Credit Quality Indicators by Segment and Portfolio Class	The following tables present the credit quality indicators by segment and portfolio class of loans at March 31, 2023 and December 31, 2022. The Company routinely assesses the ratings of loans in its portfolio through an established and comprehensive portfolio management process. March 31, 2023 ($ in thousands) Commercial Commercial Total Commercial Construction Total Grade: Pass $ 9,511,047 $ 2,937,286 $ 12,448,333 $ 3,633,440 $ 1,716,329 $ 17,798,102 Pass-Watch 277,067 52,691 329,758 116,360 9,860 455,978 Special Mention 54,998 7,552 62,550 1,534 191 64,275 Substandard 170,370 53,219 223,589 7,121 536 231,246 Doubtful — — — — — — Total $ 10,013,482 $ 3,050,748 $ 13,064,230 $ 3,758,455 $ 1,726,916 $ 18,549,601 December 31, 2022 ($ in thousands) Commercial Commercial Total Commercial Construction Total Grade: Pass $ 9,641,117 $ 2,912,057 $ 12,553,174 $ 3,440,648 $ 1,690,756 $ 17,684,578 Pass-Watch 284,843 49,093 333,936 111,587 12,097 457,620 Special Mention 79,980 6,267 86,247 3,810 196 90,253 Substandard 140,513 65,641 206,154 4,946 543 211,643 Doubtful — — — — — — Total $ 10,146,453 $ 3,033,058 $ 13,179,511 $ 3,560,991 $ 1,703,592 $ 18,444,094
Residential Mortgage and Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Credit Quality Indicators by Segment and Portfolio Class	March 31, 2023 December 31, 2022 ($ in thousands) Residential Consumer Total Residential Consumer Total Performing $ 3,299,682 $ 1,518,431 $ 4,818,113 $ 3,066,319 $ 1,570,186 $ 4,636,505 Nonperforming 30,111 6,698 36,809 26,286 7,161 33,447 Total $ 3,329,793 $ 1,525,129 $ 4,854,922 $ 3,092,605 $ 1,577,347 $ 4,669,952

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	3 Months Ended
	Mar. 31, 2023
Short-Term Debt [Abstract]
Summary of Information Concerning Short-term Borrowings	The following table presents information concerning short-term borrowings at March 31, 2023 and December 31, 2022. March 31, December 31, ($ in thousands) 2023 2022 Federal funds purchased: Amount outstanding at period end $ 350 $ 1,850 Weighted-average interest at period end 4.40 % 3.90 % Securities sold under agreements to repurchase: Amount outstanding at period end $ 419,147 $ 444,421 Weighted-average interest at period end 0.95 % 0.53 % FHLB borrowings: Amount outstanding at period end $ 3,100,000 $ 1,425,000 Weighted-average interest at period end 4.99 % 4.70 % The following table presents information concerning short-term borrowings for the three months ended March 31, 2023 and 2022. Three Months Ended March 31, ($ in thousands) 2023 2022 Federal funds purchased: Average amount outstanding during period $ 8,411 $ 2,387 Maximum amount at any month end during period $ 1,850 $ 2,350 Weighted-average interest rate during period 5.11 % 0.28 % Securities sold under agreements to repurchase: Average amount outstanding during period $ 445,773 $ 587,508 Maximum amount at any month end during period $ 499,011 $ 640,592 Weighted-average interest rate during period 0.69 % 0.06 % FHLB borrowings: Average amount outstanding during period $ 1,644,444 $ 1,100,011 Maximum amount at any month end during period $ 3,100,000 $ 1,100,000 Weighted-average interest rate during period 4.74 % 0.49 %

Derivatives (Tables)

Derivatives (Tables)	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Values of Derivative Financial Instruments	The table below presents the notional or contractual amounts and fair values of the Company’s derivative financial instruments as well as their classification on the consolidated balance sheets at March 31, 2023 and December 31, 2022. March 31, 2023 December 31, 2022 Derivative (1) Derivative (1) ($ in thousands) Type of Notional or Assets Liabilities Notional or Assets Liabilities Derivatives designated as hedging instruments: Interest rate swaps - variable rate loans Cash Flow $ 1,550,000 $ — $ 77,137 $ 2,100,000 $ 2,301 $ 112,262 Interest rate swaps - securities Fair Value 513,500 18,953 — 716,000 43,501 - 2,063,500 18,953 77,137 2,816,000 45,802 112,262 Derivatives not designated as hedging instruments: Interest rate swaps N/A 4,909,754 137,404 135,584 4,620,544 172,242 169,712 Risk participation agreements N/A 279,357 2 18 298,729 1 13 Interest rate-lock commitments on residential mortgage loans N/A 34,048 720 — 10,930 8 113 Forward commitments to sell residential mortgage loans N/A 13,705 — 276 13,819 161 8 To Be Announced (TBA) securities N/A 20,500 1 165 10,000 78 7 Foreign exchange forward contracts N/A 125,390 1,692 1,645 123,106 1,643 1,594 Visa Class B derivative contract N/A 42,930 — 1,403 43,111 — 1,883 5,425,684 139,819 139,091 5,120,239 174,133 173,330 Total derivatives $ 7,489,184 $ 158,772 $ 216,228 $ 7,936,239 $ 219,935 $ 285,592 Less: netting adjustment (2) ( 66,827 ) ( 27 ) ( 110,438 ) ( 81,471 ) Total derivative assets/liabilities $ 91,945 $ 216,201 $ 109,497 $ 204,121 (1) Derivative assets and liabilities are reported at fair value in other assets or other liabilities, respectively, in the consolidated balance sheets. (2) Represents balance sheet netting of derivative assets and liabilities for variation margin collateral held or placed with the same central clearing counterparty. See offsetting assets and liabilities for further information.
Effects of Derivative Instruments on the Statement of Income	The effects of derivative instruments on the Consolidated Statements of Income for the three months ended March 31, 2023 and 2022 are presented in the table below. Three Months Ended ($ in thousands) March 31, Derivative Instruments: Location of Gain (Loss) Recognized 2023 2022 Cash flow hedges: Variable rate loans Interest income - loans $ ( 8,001 ) $ 6,754 Fair value hedges: Securities Interest income - securities - taxable 2,750 1,158 Securities - terminations Noninterest income - securities transactions, net — 1,620 Derivatives not designated as hedging: Residential mortgage banking Noninterest income - secondary mortgage market operations 484 1,192 Customer and all other instruments Noninterest income - other noninterest income 583 2,349 Total gain (loss) $ ( 4,184 ) $ 13,073
Offsetting Derivative Assets and Liabilities Subject to Master Netting Arrangements	Offsetting information in regards to all derivative assets and liabilities, including accrued interest, subject to these master netting agreements at March 31, 2023 and December 31, 2022 is presented in the following tables ($ in thousands) Gross Net Amounts Gross Amounts Not Offset in the Description Gross Offset in Presented in Financial Cash Net As of March 31, 2023 Derivative Assets $ 158,214 $ ( 69,032 ) $ 89,182 $ 85,772 $ 109,617 $ 113,027 Derivative Liabilities $ 85,797 $ ( 25 ) $ 85,772 $ 85,772 $ — $ — ($ in thousands) Gross Net Amounts Gross Amounts Not Offset in the Description Gross Offset in Presented in Financial Cash Net As of December 31, 2022 Derivative Assets $ 223,072 $ ( 112,338 ) $ 110,734 $ 32,601 $ 27,852 $ 105,985 Derivative Liabilities $ 116,395 $ ( 83,794 ) $ 32,601 $ 32,601 $ — $ —

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2023
Stockholders' Equity Note [Abstract]
Components of Accumulated Other Comprehensive Income (Loss)	A roll-forward of the components of Accumulated Other Comprehensive Income (Loss) is presented in the table that follows:  Available HTM Securities Employee Cash Equity Method Investment Total ($ in thousands) Balance, December 31, 2021 $ 11,037 $ 153 $ ( 80,946 ) $ 16,284 $ ( 463 ) $ ( 53,935 ) Net change in unrealized gain (loss) ( 358,190 ) — — ( 33,182 ) 468 ( 390,904 ) Reclassification of net income or loss realized and included in earnings 1,707 — 1,209 ( 6,754 ) — ( 3,838 ) Transfer of net unrealized loss from AFS to HTM securities portfolio 15,405 ( 15,405 ) — — — — Amortization of unrealized net gain on securities transferred to HTM — 261 — — — 261 Income tax (expense) benefit 76,981 3,418 ( 273 ) 9,014 — 89,140 Balance, March 31, 2022 $ ( 253,060 ) $ ( 11,573 ) $ ( 80,010 ) $ ( 14,638 ) $ 5 $ ( 359,276 ) Balance, December 31, 2022 $ ( 584,408 ) $ ( 10,734 ) $ ( 97,952 ) $ ( 79,093 ) $ 5 $ ( 772,182 ) Net change in unrealized gain 80,958 — — 19,280 706 100,944 Reclassification of net loss realized and included in earnings — — 1,519 8,001 — 9,520 Valuation adjustments to employee benefit plans — — ( 1,836 ) — — ( 1,836 ) Amortization of unrealized net gain or loss on securities transferred to HTM — 494 — — — 494 Income tax (expense) benefit ( 18,224 ) ( 111 ) 71 ( 6,141 ) — ( 24,405 ) Balance, March 31, 2023 $ ( 521,674 ) $ ( 10,351 ) $ ( 98,198 ) $ ( 57,953 ) $ 711 $ ( 687,465 )
Line Items in Consolidated Income Statements Affected by Amounts Reclassified from Accumulated Other Comprehensive Income	The following table shows the line items in the consolidated statements of income affected by amounts reclassified from AOCI.  Three Months Ended Amount reclassified from AOCI (a) March 31, Affected line item on ($ in thousands) 2023 2022 the statement of income Loss on sale of AFS securities $ — $ ( 1,707 ) Noninterest income Tax effect — 385 Income taxes Net of tax — ( 1,322 ) Net income Amortization of unrealized net loss on securities transferred to HTM ( 494 ) ( 261 ) Interest income Tax effect 111 59 Income taxes Net of tax ( 383 ) ( 202 ) Net income Amortization of defined benefit pension and post-retirement items ( 1,519 ) ( 1,209 ) Other noninterest expense (b) Tax effect 340 273 Income taxes Net of tax ( 1,179 ) ( 936 ) Net income Reclassification of unrealized gain/(Loss) on cash flow hedges ( 10,629 ) 3,875 Interest income Tax effect 2,393 ( 875 ) Income taxes Net of tax ( 8,236 ) 3,000 Net income Amortization of gain on terminated cash flow hedges 2,628 2,879 Interest income Tax effect ( 592 ) ( 650 ) Income taxes Net of tax 2,036 2,229 Net income Reclassification of unrealized loss on equity method investment — ( 468 ) Noninterest income Tax effect — — Income taxes Net of tax — ( 468 ) Net income Total reclassifications, net of tax $ ( 7,762 ) $ 2,301 Net income (a) Amounts in parentheses indicate reduction in net income (b) These AOCI components are included in the computation of net periodic pension and post-retirement cost that is reported with other noninterest

Other Noninterest Income (Table

Other Noninterest Income (Tables)	3 Months Ended
	Mar. 31, 2023
Other Income, Nonoperating [Abstract]
Components of Other Noninterest Income	Components of other noninterest income are as follows: Three Months Ended March 31, ($ in thousands) 2023 2022 Income from bank-owned life insurance $ 3,286 $ 3,545 Credit related fees 2,765 2,669 Income from derivatives 583 2,349 Other miscellaneous 4,584 6,434 Total other noninterest income $ 11,218 $ 14,997

Other Noninterest Expense (Tabl

Other Noninterest Expense (Tables)	3 Months Ended
	Mar. 31, 2023
Other Expense, Nonoperating [Abstract]
Components of Other Noninterest Expense	Components of other noninterest expense are as follows: Three Months Ended March 31, ($ in thousands) 2023 2022 Corporate value and franchise taxes and other non-income taxes $ 5,253 $ 4,248 Advertising 3,256 3,166 Telecommunications and postage 3,071 2,925 Entertainment and contributions 2,631 2,961 Tax credit investment amortization 1,401 1,004 Printing and supplies 990 1,003 Travel expense 1,046 660 Net other retirement expense ( 3,655 ) ( 6,772 ) Other miscellaneous 8,124 9,045 Total other noninterest expense $ 22,117 $ 18,240

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Computation of Earnings Per Common Share	A summary of the information used in the computation of earnings per common share follows. Three Months Ended March 31, ($ in thousands, except per share data) 2023 2022 Numerator: Net income to common shareholders $ 126,467 $ 123,478 Net income allocated to participating securities - basic and diluted 1,358 1,918 Net income allocated to common shareholders - basic and diluted $ 125,109 $ 121,560 Denominator: Weighted-average common shares - basic 86,018 86,660 Dilutive potential common shares 264 276 Weighted-average common shares - diluted 86,282 86,936 Earnings per common share: Basic $ 1.45 $ 1.40 Diluted $ 1.45 $ 1.40

Retirement Plans (Tables)

Retirement Plans (Tables)	3 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Components of Net Periodic Benefits Cost	The following tables show the components of net periodic benefit cost included in expense for the periods indicated.  Other Post- ($ in thousands) Pension Benefits Retirement Benefits For the Three Months Ended March 31, 2023 2022 2023 2022 Service cost $ 1,980 $ 2,800 $ ( 31 ) $ 25 Interest cost 5,788 3,417 216 77 Expected return on plan assets ( 11,178 ) ( 11,475 ) — — Amortization of net (gain) or loss and prior service costs 1,770 1,348 ( 251 ) ( 139 ) Net periodic benefit cost $ ( 1,640 ) $ ( 3,910 ) $ ( 66 ) $ ( 37 )

Share-Based Payment Arrangeme_2

Share-Based Payment Arrangements (Tables)	3 Months Ended
	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Summary of Nonvested Restricted and Performance Shares	A summary of the status of the Company’s nonvested restricted stock units and restricted and performance-based share awards at March 31, 2023 are presented in the following table. Weighted Average Number of Grant Date Shares Fair Value Nonvested at January 1, 2023 1,431,515 $ 40.95 Granted 582,348 50.08 Vested ( 182,901 ) 47.42 Forfeited ( 71,086 ) 39.65 Nonvested at March 31, 2023 1,759,876 $ 43.36

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Off-Balance Sheet Financial Instruments	The following table presents a summary of the Company’s off-balance sheet financial instruments as of March 31, 2023 and December 31, 2022:  March 31, December 31, ($ in thousands) 2023 2022 Commitments to extend credit $ 10,285,535 $ 10,202,464 Letters of credit 430,026 400,505

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables present for each of the fair value hierarchy levels the Company’s financial assets and liabilities that are measured at fair value on a recurring basis in the consolidated balance sheets at March 31, 2023 and December 31, 2022:  March 31, 2023 ($ in thousands) Level 1 Level 2 Level 3 Total Assets Available for sale debt securities: U.S. Treasury and government agency securities $ — $ 111,515 $ — $ 111,515 Municipal obligations — 204,469 — 204,469 Corporate debt securities — 20,124 — 20,124 Residential mortgage-backed securities — 2,219,264 — 2,219,264 Commercial mortgage-backed securities — 2,942,605 — 2,942,605 Collateralized mortgage obligations — 67,643 — 67,643 Total available for sale securities — 5,565,620 — 5,565,620 Mortgage loans held for sale — 14,923 — 14,923 Derivative assets (1) — 91,945 — 91,945 Total recurring fair value measurements - assets $ — $ 5,672,488 $ — $ 5,672,488 Liabilities Derivative liabilities (1) $ — $ 214,798 $ 1,403 $ 216,201 Total recurring fair value measurements - liabilities $ — $ 214,798 $ 1,403 $ 216,201  December 31, 2022 ($ in thousands) Level 1 Level 2 Level 3 Total Assets Available for sale debt securities: U.S. Treasury and government agency securities $ — $ 110,865 $ — $ 110,865 Municipal obligations — 203,092 — 203,092 Corporate debt securities — 21,080 — 21,080 Residential mortgage-backed securities — 2,256,986 — 2,256,986 Commercial mortgage-backed securities — 2,893,430 — 2,893,430 Collateralized mortgage obligations — 70,588 — 70,588 Total available for sale securities — 5,556,041 — 5,556,041 Mortgage loans held for sale 10,843 — 10,843 Derivative assets (1) — 109,497 — 109,497 Total recurring fair value measurements - assets $ — $ 5,676,381 $ — $ 5,676,381 Liabilities Derivative liabilities (1) $ — $ 202,238 $ 1,883 $ 204,121 Total recurring fair value measurements - liabilities $ — $ 202,238 $ 1,883 $ 204,121 (1) For further disaggregation of derivative assets and liabilities, see Note 5 - Derivatives.
Consolidated Balance Sheets for Financial Instruments of Material Nature Measured at Fair Value on Recurring Basis	The table below presents a rollforward of the amounts on the consolidated balance sheets for the three months ended March 31, 2023 and the year ended December 31, 2022 for financial instruments of a material nature that are classified within level 3 of the fair value hierarchy and are measured at fair value on a recurring basis: ($ in thousands) Balance at December 31, 2021 $ 4,116 Cash settlement ( 2,429 ) Losses included in earnings 196 Balance at December 31, 2022 1,883 Conversion rate adjustment ( 283 ) Cash settlement ( 430 ) Losses included in earnings 233 Balance at March 31, 2023 $ 1,403
Overview of the Valuation Techniques and Significant Unobservable Inputs	The table below provides an overview of the valuation techniques and significant unobservable inputs used in those techniques to measure the financial instrument measured on a recurring basis and classified within level 3 of the valuation. The range of sensitivities that management utilized in its fair value calculations is deemed acceptable in the industry with respect to the identified financial instrument. ($ in thousands)  Fair Value Level 3 Class March 31, 2023 December 31, 2022 Derivative liability $ 1,403 $ 1,883 Valuation technique Discounted cash flow Discounted cash flow Unobservable inputs: Visa Class A appreciation - range 6 - 12 % 6 - 12 % Visa Class A appreciation - weighted average 9 % 9 % Conversion rate - range 1.60 x- 1.59 x 1.61 x- 1.60 x Conversion rate -weighted average 1.5950 x 1.6030 x Time until resolution 3 - 9 months 3 - 12 months
Financial Assets Measured at Fair Value on Nonrecurring Basis	The following tables present the Company’s financial assets that are measured at fair value on a nonrecurring basis for each of the fair value hierarchy levels.  March 31, 2023 ($ in thousands) Level 1 Level 2 Level 3 Total Collateral-dependent loans individually evaluated for credit loss $ — $ 13,212 $ — $ 13,212 Other real estate owned and foreclosed assets, net — — 1,976 1,976 Total nonrecurring fair value measurements $ — $ 13,212 $ 1,976 $ 15,188  December 31, 2022 ($ in thousands) Level 1 Level 2 Level 3 Total Collateral-dependent loans individually evaluated for credit loss $ — $ 4,692 $ — $ 4,692 Other real estate owned and foreclosed assets, net — — 2,017 2,017 Total nonrecurring fair value measurements $ — $ 4,692 $ 2,017 $ 6,709
Estimated Fair Values of Financial Instruments	The following tables present the estimated fair values of the Company’s financial instruments by fair value hierarchy levels and the corresponding carrying amounts.  March 31, 2023  Total Fair Carrying ($ in thousands) Level 1 Level 2 Level 3 Value Amount Financial assets: Cash, interest-bearing bank deposits, and federal funds sold $ 2,882,521 $ — $ — $ 2,882,521 $ 2,882,521 Available for sale securities — 5,565,620 — 5,565,620 5,565,620 Held to maturity securities — 2,623,760 — 2,623,760 2,825,064 Loans, net — 13,212 22,970,797 22,984,009 23,095,138 Loans held for sale — 23,436 — 23,436 23,436 Derivative financial instruments — 91,945 — 91,945 91,945 Financial liabilities: Deposits $ — $ — $ 29,587,071 $ 29,587,071 $ 29,613,070 Federal funds purchased 350 — — 350 350 Securities sold under agreements to repurchase 419,147 — — 419,147 419,147 FHLB short-term borrowings — 3,100,275 — 3,100,275 3,100,000 Long-term debt — 206,659 — 206,659 242,115 Derivative financial instruments — 214,798 1,403 216,201 216,201  December 31, 2022 ($ in thousands) Level 1 Level 2 Level 3 Total Fair Carrying Financial assets: Cash, interest-bearing bank deposits, and federal funds sold $ 888,519 $ — $ — $ 888,519 $ 888,519 Available for sale securities — 5,556,041 — 5,556,041 5,556,041 Held to maturity securities — 2,615,398 — 2,615,398 2,852,495 Loans, net — 4,692 22,132,683 22,137,375 22,806,257 Loans held for sale — 26,385 — 26,385 26,385 Derivative financial instruments — 109,497 — 109,497 109,497 Financial liabilities: Deposits $ — $ — $ 29,041,635 $ 29,041,635 $ 29,070,349 Federal funds purchased 1,850 — — 1,850 1,850 Securities sold under agreements to repurchase 444,421 — — 444,421 444,421 FHLB short-term borrowings 1,425,000 — — 1,425,000 1,425,000 Long-term debt — 200,060 — 200,060 242,077 Derivative financial instruments — 202,238 1,883 204,121 204,121

Securities (Narrative) (Details

Securities (Narrative) (Details)	Mar. 31, 2023 USD ($) Security	Dec. 31, 2022 USD ($) Security	Mar. 31, 2022 USD ($)
Debt and Equity Securities, FV-NI [Line Items]
Securities with an aggregate fair value	$ 5,415,262,000	$ 5,483,762,000
Securities available for sale, amortized cost	6,238,835,000	6,310,214,000
Securities classified as trading	0	$ 0
Allowance for credit loss	$ 0
Securities that met the criteria of a credit loss event | Security	0
Number of securities with market values below their cost basis | Security	709	757
Asset Pledged as Collateral without Right [Member]
Debt and Equity Securities, FV-NI [Line Items]
Securities pledged as collateral	$ 6,100,000,000	$ 4,900,000,000
Available for Sale and Held to Maturity [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost of securities excluding accrued interest		$ 29,100,000	$ 28,300,000

Securities (Amortized Cost and

Securities (Amortized Cost and Fair Value of Debt Securities Available for Sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Available-for-sale Securities [Line Items]
Securities Available for Sale, Gross Amortized Cost	$ 6,238,835	$ 6,310,214
Securities Available for Sale, Gross Unrealized Gains	3,673	2,315
Securities Available for Sale, Gross Unrealized Losses	676,888	756,488
Securities Available for Sale, Fair Value	5,565,620	5,556,041
U.S. Treasury And Government Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities Available for Sale, Gross Amortized Cost	113,016	113,211
Securities Available for Sale, Gross Unrealized Gains	287
Securities Available for Sale, Gross Unrealized Losses	1,788	2,346
Securities Available for Sale, Fair Value	111,515	110,865
Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities Available for Sale, Gross Amortized Cost	206,219	207,014
Securities Available for Sale, Gross Unrealized Gains	247	59
Securities Available for Sale, Gross Unrealized Losses	1,997	3,981
Securities Available for Sale, Fair Value	204,469	203,092
Residential Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities Available for Sale, Gross Amortized Cost	2,583,935	2,655,381
Securities Available for Sale, Gross Unrealized Gains	240	224
Securities Available for Sale, Gross Unrealized Losses	364,911	398,619
Securities Available for Sale, Fair Value	2,219,264	2,256,986
Commercial Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities Available for Sale, Gross Amortized Cost	3,239,281	3,234,278
Securities Available for Sale, Gross Unrealized Gains	2,899	2,032
Securities Available for Sale, Gross Unrealized Losses	299,575	342,880
Securities Available for Sale, Fair Value	2,942,605	2,893,430
Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities Available for Sale, Gross Amortized Cost	72,884	76,830
Securities Available for Sale, Gross Unrealized Losses	5,241	6,242
Securities Available for Sale, Fair Value	67,643	70,588
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities Available for Sale, Gross Amortized Cost	23,500	23,500
Securities Available for Sale, Gross Unrealized Losses	3,376	2,420
Securities Available for Sale, Fair Value	$ 20,124	$ 21,080

Securities (Amortized Cost an_2

Securities (Amortized Cost and Fair Value of Debt Securities Held to Maturity) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Securities Held to Maturity, Gross Amortized Cost	$ 2,825,064	$ 2,852,495
Securities Held to Maturity, Gross Unrealized Gains	2,811	774
Securities Held to Maturity, Gross Unrealized Losses	204,115	237,871
Securities Held to Maturity, Fair Value	2,623,760	2,615,398
U.S. Treasury And Government Agency Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities Held to Maturity, Gross Amortized Cost	427,643	426,454
Securities Held to Maturity, Gross Unrealized Gains	824	21
Securities Held to Maturity, Gross Unrealized Losses	41,538	49,044
Securities Held to Maturity, Fair Value	386,929	377,431
Municipal Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities Held to Maturity, Gross Amortized Cost	696,471	698,908
Securities Held to Maturity, Gross Unrealized Gains	1,987	753
Securities Held to Maturity, Gross Unrealized Losses	19,262	26,558
Securities Held to Maturity, Fair Value	679,196	673,103
Residential Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities Held to Maturity, Gross Amortized Cost	715,499	734,478
Securities Held to Maturity, Gross Unrealized Losses	63,526	72,532
Securities Held to Maturity, Fair Value	651,973	661,946
Commercial Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities Held to Maturity, Gross Amortized Cost	944,292	948,691
Securities Held to Maturity, Gross Unrealized Losses	77,653	87,211
Securities Held to Maturity, Fair Value	866,639	861,480
Collateralized Mortgage Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities Held to Maturity, Gross Amortized Cost	41,159	43,964
Securities Held to Maturity, Gross Unrealized Losses	2,136	2,526
Securities Held to Maturity, Fair Value	$ 39,023	$ 41,438

Securities (Amortized Cost an_3

Securities (Amortized Cost and Fair Value of Debt Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Debt Securities Available for Sale, Due in one year or less, Amortized Cost	$ 72
Debt Securities Available for Sale, Due after one year through five years, Amortized Cost	1,024,989
Debt Securities Available for Sale, Due after five years through ten years, Amortized Cost	2,980,929
Debt Securities Available for Sale, Due after ten years, Amortized Cost	2,232,845
Securities Available for Sale, Gross Amortized Cost	6,238,835	$ 6,310,214
Debt Securities Available for Sale, Due in one year or less, Fair Value	72
Debt Securities Available for Sale, Due after one year through five years, Fair Value	979,364
Debt Securities Available for Sale, Due after five years through ten years, Fair Value	2,699,847
Debt Securities Available for Sale, Due after ten years, Fair Value	1,886,337
Total available for sale debt securities, Fair Value	5,565,620	5,556,041
Debt Securities Held to Maturity, Due in one year or less, Amortized Cost	11,637
Debt Securities Held to Maturity, Due after one year through five years, Amortized Cost	538,020
Debt Securities Held to Maturity, Due after five years through ten years, Amortized Cost	918,433
Debt Securities Held to Maturity, Due after ten years, Amortized Cost	1,356,974
Total held to maturity debt securities, Amortized Cost	2,825,064	2,852,495
Debt Securities Held to Maturity, Due in one year or less, Fair Value	11,573
Debt Securities Held to Maturity, Due after one year through five years, Fair Value	520,589
Debt Securities Held to Maturity, Due after five years through ten years, Fair Value	851,024
Debt Securities Held to Maturity, Due after ten years, Fair Value	1,240,574
Total held to maturity debt securities, Fair Value	$ 2,623,760	$ 2,615,398

Securities (Proceeds from Gross

Securities (Proceeds from Gross Gains on and Gross Losses on Sale of Securities) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Investments, Debt and Equity Securities [Abstract]
Proceeds	$ 73,219
Gross losses	87
Net gain (loss)	$ (87)

Securities (Securities Availabl

Securities (Securities Available for Sale with Unrealized Losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Losses less than 12 months, Fair Value	$ 593,004	$ 2,475,872
Available for sale, Losses less than 12 months, Gross Unrealized Losses	20,343	173,301
Available for sale, Losses 12 months or longer, Fair Value	4,822,258	3,007,890
Available for sale, Losses 12 months or longer, Gross Unrealized Losses	656,545	583,187
Available for sale, Total, Fair Value	5,415,262	5,483,762
Available for sale, Total, Gross Unrealized Losses	676,888	756,488
U.S. Treasury And Government Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Losses less than 12 months, Fair Value	49,332	102,607
Available for sale, Losses less than 12 months, Gross Unrealized Losses	382	754
Available for sale, Losses 12 months or longer, Fair Value	8,070	8,258
Available for sale, Losses 12 months or longer, Gross Unrealized Losses	1,406	1,592
Available for sale, Total, Fair Value	57,402	110,865
Available for sale, Total, Gross Unrealized Losses	1,788	2,346
Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Losses less than 12 months, Fair Value	85,570	192,334
Available for sale, Losses less than 12 months, Gross Unrealized Losses	649	3,981
Available for sale, Losses 12 months or longer, Fair Value	86,444
Available for sale, Losses 12 months or longer, Gross Unrealized Losses	1,348
Available for sale, Total, Fair Value	172,014	192,334
Available for sale, Total, Gross Unrealized Losses	1,997	3,981
Residential Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Losses less than 12 months, Fair Value	137,406	636,060
Available for sale, Losses less than 12 months, Gross Unrealized Losses	4,437	49,790
Available for sale, Losses 12 months or longer, Fair Value	2,071,526	1,611,832
Available for sale, Losses 12 months or longer, Gross Unrealized Losses	360,474	348,829
Available for sale, Total, Fair Value	2,208,932	2,247,892
Available for sale, Total, Gross Unrealized Losses	364,911	398,619
Commercial Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Losses less than 12 months, Fair Value	318,876	1,489,974
Available for sale, Losses less than 12 months, Gross Unrealized Losses	14,695	114,195
Available for sale, Losses 12 months or longer, Fair Value	2,570,771	1,351,530
Available for sale, Losses 12 months or longer, Gross Unrealized Losses	284,880	228,685
Available for sale, Total, Fair Value	2,889,647	2,841,504
Available for sale, Total, Gross Unrealized Losses	299,575	342,880
Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Losses less than 12 months, Fair Value		41,703
Available for sale, Losses less than 12 months, Gross Unrealized Losses		3,275
Available for sale, Losses 12 months or longer, Fair Value	67,643	28,884
Available for sale, Losses 12 months or longer, Gross Unrealized Losses	5,241	2,967
Available for sale, Total, Fair Value	67,643	70,587
Available for sale, Total, Gross Unrealized Losses	5,241	6,242
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Losses less than 12 months, Fair Value	1,820	13,194
Available for sale, Losses less than 12 months, Gross Unrealized Losses	180	1,306
Available for sale, Losses 12 months or longer, Fair Value	17,804	7,386
Available for sale, Losses 12 months or longer, Gross Unrealized Losses	3,196	1,114
Available for sale, Total, Fair Value	19,624	20,580
Available for sale, Total, Gross Unrealized Losses	$ 3,376	$ 2,420

Securities (Securities Held to

Securities (Securities Held to Maturity with Unrealized Losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	$ 676,638	$ 1,836,592
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	18,841	112,063
Held to maturity, Losses 12 months or longer, Fair Value	1,659,916	725,298
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	185,274	125,808
Held to maturity, Total, Fair Value	2,336,554	2,561,890
Held to maturity, Total, Gross Unrealized Losses	204,115	237,871
U.S. Treasury And Government Agency Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	49,176	145,893
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	2,085	13,245
Held to maturity, Losses 12 months or longer, Fair Value	305,813	226,499
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	39,453	35,799
Held to maturity, Total, Fair Value	354,989	372,392
Held to maturity, Total, Gross Unrealized Losses	41,538	49,044
Municipal Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	240,561	560,288
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	1,452	8,878
Held to maturity, Losses 12 months or longer, Fair Value	183,368	64,346
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	17,810	17,680
Held to maturity, Total, Fair Value	423,929	624,634
Held to maturity, Total, Gross Unrealized Losses	19,262	26,558
Residential Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	225,019	391,146
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	9,134	30,515
Held to maturity, Losses 12 months or longer, Fair Value	426,955	270,800
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	54,392	42,017
Held to maturity, Total, Fair Value	651,974	661,946
Held to maturity, Total, Gross Unrealized Losses	63,526	72,532
Commercial Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	159,220	697,827
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	6,140	56,899
Held to maturity, Losses 12 months or longer, Fair Value	707,420	163,653
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	71,513	30,312
Held to maturity, Total, Fair Value	866,640	861,480
Held to maturity, Total, Gross Unrealized Losses	77,653	87,211
Collateralized Mortgage Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to maturity, Losses less than 12 months, Fair Value	2,662	41,438
Held to maturity, Losses less than 12 months, Gross Unrealized Losses	30	2,526
Held to maturity, Losses 12 months or longer, Fair Value	36,360
Held to maturity, Losses 12 months or longer, Gross Unrealized Losses	2,106
Held to maturity, Total, Fair Value	39,022	41,438
Held to maturity, Total, Gross Unrealized Losses	$ 2,136	$ 2,526

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses (Narrative) (Details)	3 Months Ended			12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023 USD ($) Default	Mar. 31, 2022 USD ($) Loan	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Accrued interest		$ 107,900,000					$ 100,200,000
Weighted average percentage of forecast			40%
Base line economic forecast probability percentage		40%
Description of post modification defaults		A payment default occurs if the loan is either 90 days or more delinquent or has been charged off as of the end of the period presented.
Number of post modification defaults | Default		0
Nonaccrual loans		$ 54,344,000					38,991,000
Unfunded commitment to borrowers related to MEFD or TDR		0					0
Loans held for sale		23,436,000					26,385,000
Troubled Debt Restructurings [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans							2,600,000
Accruing and nonaccruing							4,500,000
Reduced interest rate			$ 100,000
Troubled Debt Restructurings [Member] | Loans With Other Modifications [Member]
Accounts Notes And Loans Receivable [Line Items]
Other modifications		100
Modified Loans To Borrowers Experiencing Financial Difficulty [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans		1,600,000
Accruing and nonaccruing		$ 1,618,000
Slower Near-term Growth/Mild Recessionary Scenario S-2 [Member]
Accounts Notes And Loans Receivable [Line Items]
Unemployment percentage rate forecast					5.80%	4.80%
Gross domestic product annual growth percentage				3.20%	0.30%	0.90%
Description of decline in gross domestic product due to mild recession		This leads to a mild recession that starts in the second quarter of 2023 lasting three quarters, with a peak to trough decline of 1.3% resulting in forecasted annual GDP growth of only
Moderate Recessionary Scenario S-3 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for credit losses probability weighting percentage		10%
Unemployment percentage rate forecast				6.30%	7.60%	5.60%
Gross domestic product annual growth percentage				2.60%	(0.30%)	0.30%
Mild Recessionary Scenario S-2 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for credit losses probability weighting percentage		50%
Downside Scenario S-2 [Member]
Accounts Notes And Loans Receivable [Line Items]
Weighted average percentage of forecast			60%
Forecast [Member]
Accounts Notes And Loans Receivable [Line Items]
Unemployment percentage rate forecast				4%	3.90%	3.50%
Gross domestic product annual growth percentage	(1.30%)			2.70%	1.90%	1.90%
Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans		$ 30,111,000					25,269,000
Loans carried at fair value option		14,900,000					10,800,000
Unpaid principal balance		14,600,000					10,600,000
Residential Mortgages [Member] | Troubled Debt Restructurings [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of TDRs subsequently defaulted | Loan			2
Recorded Investment			$ 100,000
Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans		6,697,000					6,692,000
Real estate in process of foreclosure		3,800,000					4,900,000
Real estate acquired through foreclosure		400,000					400,000
Consumer [Member] | Troubled Debt Restructurings [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of TDRs subsequently defaulted | Loan			2
Recorded Investment		$ 100,000
Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period		9 months
Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period		5 years
Total Commercial And Industrial [Member] | Modified Loans To Borrowers Experiencing Financial Difficulty [Member]
Accounts Notes And Loans Receivable [Line Items]
Accruing and nonaccruing		$ 1,618,000
Total Commercial And Industrial [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans		15,695,000					5,481,000
Commercial Non-Real Estate [Member] | Troubled Debt Restructurings [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of TDRs subsequently defaulted | Loan			2
Recorded Investment			$ 3,100,000
Commercial Non-Real Estate [Member] | Total Commercial And Industrial [Member] | Modified Loans To Borrowers Experiencing Financial Difficulty [Member]
Accounts Notes And Loans Receivable [Line Items]
Accruing and nonaccruing		934,000
Commercial Non-Real Estate [Member] | Total Commercial And Industrial [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans		$ 13,302,000					$ 4,020,000

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses (Loans, Net of Unearned Income) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 23,404,523	$ 23,114,046	$ 21,323,341
Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Total loans	3,329,793	3,092,605	2,462,900
Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Total loans	1,525,129	1,577,347	1,557,774
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Total loans	3,758,455	3,560,991	3,563,299
Construction and Land Development [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Total loans	1,726,916	1,703,592	1,286,655
Total Commercial And Industrial [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Total loans	13,064,230	13,179,511	12,452,713
Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Total loans	10,013,482	10,146,453	9,584,480
Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Total loans	$ 3,050,748	$ 3,033,058	$ 2,868,233

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses (Allowance for Credit Losses by Portfolio Class) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Beginning balance	$ 307,789	$ 342,065
Allowance for loan losses: Net provision for loan losses	6,020	(22,527)
Allowance for loan losses: Ending balance	309,385	317,843
Reserve for unfunded lending commitments: Beginning balance	33,309	29,334
Reserve for unfunded lending commitments: Provision for losses	1,295	1,376
Reserve for unfunded lending commitments: Ending balance	32,014	30,710
Total allowance for credit losses	341,399	348,553
Allowance for loan losses: Individually evaluated		766
Allowance for loan losses: Collectively evaluated	309,385	317,077
Reserve for unfunded lending commitments: Collectively evaluated	32,014	30,710
Loans: Individually evaluated for impairment	13,212	9,587
Loans: Collectively evaluated for impairment	23,391,311	21,313,754
Total loans	23,404,523	21,323,341	$ 23,114,046
Non-Purchased Credit Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Charge-offs	(7,972)	(5,385)
Allowance for loan losses: Recoveries	2,253	5,066
Allowance for loan losses: Net provision for loan losses	7,315	(23,903)
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Beginning balance	71,961	108,058
Allowance for loan losses: Ending balance	76,192	105,367
Reserve for unfunded lending commitments: Beginning balance	1,395	1,694
Reserve for unfunded lending commitments: Provision for losses	493	453
Reserve for unfunded lending commitments: Ending balance	1,888	2,147
Total allowance for credit losses	78,080	107,514
Allowance for loan losses: Individually evaluated		20
Allowance for loan losses: Collectively evaluated	76,192	105,347
Reserve for unfunded lending commitments: Collectively evaluated	1,888	2,147
Loans: Individually evaluated for impairment	1,120	1,309
Loans: Collectively evaluated for impairment	3,757,335	3,561,990
Total loans	3,758,455	3,563,299	3,560,991
Total Commercial [Member] | Construction and Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Beginning balance	30,498	22,102
Allowance for loan losses: Ending balance	30,902	21,088
Reserve for unfunded lending commitments: Beginning balance	25,110	21,907
Reserve for unfunded lending commitments: Provision for losses	1,487	(474)
Reserve for unfunded lending commitments: Ending balance	23,623	22,381
Total allowance for credit losses	54,525	43,469
Allowance for loan losses: Individually evaluated		20
Allowance for loan losses: Collectively evaluated	30,902	21,068
Reserve for unfunded lending commitments: Collectively evaluated	23,623	22,381
Loans: Individually evaluated for impairment		122
Loans: Collectively evaluated for impairment	1,726,916	1,286,533
Total loans	1,726,916	1,286,655	1,703,592
Total Commercial [Member] | Non-Purchased Credit Impaired Loans [Member] | Commercial Real Estate - Income Producing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Charge-offs		(4)
Allowance for loan losses: Recoveries		878
Allowance for loan losses: Net provision for loan losses	(4,231)	3,565
Total Commercial [Member] | Non-Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Charge-offs	(61)
Allowance for loan losses: Recoveries	6	68
Allowance for loan losses: Net provision for loan losses	(459)	(1,082)
Total Commercial [Member] | Total Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Beginning balance	144,745	149,321
Allowance for loan losses: Ending balance	140,312	135,760
Reserve for unfunded lending commitments: Beginning balance	5,286	4,845
Reserve for unfunded lending commitments: Provision for losses	(169)	138
Reserve for unfunded lending commitments: Ending balance	5,117	4,707
Total allowance for credit losses	145,429	140,467
Allowance for loan losses: Individually evaluated		144
Allowance for loan losses: Collectively evaluated	140,312	135,616
Reserve for unfunded lending commitments: Collectively evaluated	5,117	4,707
Loans: Individually evaluated for impairment	10,957	2,693
Loans: Collectively evaluated for impairment	13,053,273	12,450,020
Total loans	13,064,230	12,452,713	13,179,511
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Beginning balance	96,461	95,888
Allowance for loan losses: Ending balance	92,646	87,299
Reserve for unfunded lending commitments: Beginning balance	4,984	4,522
Reserve for unfunded lending commitments: Provision for losses	(191)	246
Reserve for unfunded lending commitments: Ending balance	4,793	4,276
Total allowance for credit losses	97,439	91,575
Allowance for loan losses: Individually evaluated		112
Allowance for loan losses: Collectively evaluated	92,646	87,187
Reserve for unfunded lending commitments: Collectively evaluated	4,793	4,276
Loans: Individually evaluated for impairment	10,273	1,742
Loans: Collectively evaluated for impairment	10,003,209	9,582,738
Total loans	10,013,482	9,584,480	10,146,453
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Beginning balance	48,284	53,433
Allowance for loan losses: Ending balance	47,666	48,461
Reserve for unfunded lending commitments: Beginning balance	302	323
Reserve for unfunded lending commitments: Provision for losses	22	108
Reserve for unfunded lending commitments: Ending balance	324	431
Total allowance for credit losses	47,990	48,892
Allowance for loan losses: Individually evaluated		32
Allowance for loan losses: Collectively evaluated	47,666	48,429
Reserve for unfunded lending commitments: Collectively evaluated	324	431
Loans: Individually evaluated for impairment	684	951
Loans: Collectively evaluated for impairment	3,050,064	2,867,282
Total loans	3,050,748	2,868,233	3,033,058
Total Commercial [Member] | Total Commercial And Industrial [Member] | Non-Purchased Credit Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Charge-offs	(4,528)	(2,659)
Allowance for loan losses: Recoveries	1,228	2,531
Allowance for loan losses: Net provision for loan losses	(1,133)	(13,433)
Total Commercial [Member] | Total Commercial And Industrial [Member] | Non-Purchased Credit Impaired Loans [Member] | Commercial Non-Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Charge-offs	(4,528)	(2,659)
Allowance for loan losses: Recoveries	1,033	2,142
Allowance for loan losses: Net provision for loan losses	(320)	(8,072)
Total Commercial [Member] | Total Commercial And Industrial [Member] | Non-Purchased Credit Impaired Loans [Member] | Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Recoveries	195	389
Allowance for loan losses: Net provision for loan losses	(813)	(5,361)
Residential Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Beginning balance	32,464	30,623
Allowance for loan losses: Ending balance	34,541	26,335
Reserve for unfunded lending commitments: Beginning balance	31	22
Reserve for unfunded lending commitments: Provision for losses	(14)	3
Reserve for unfunded lending commitments: Ending balance	17	19
Total allowance for credit losses	34,558	26,354
Allowance for loan losses: Individually evaluated		408
Allowance for loan losses: Collectively evaluated	34,541	25,927
Reserve for unfunded lending commitments: Collectively evaluated	17	19
Loans: Individually evaluated for impairment	1,135	4,534
Loans: Collectively evaluated for impairment	3,328,658	2,458,366
Total loans	3,329,793	2,462,900	3,092,605
Residential Mortgages [Member] | Non-Purchased Credit Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Charge-offs	(20)	(42)
Allowance for loan losses: Recoveries	181	61
Allowance for loan losses: Net provision for loan losses	(1,916)	(4,307)
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Beginning balance	28,121	31,961
Allowance for loan losses: Ending balance	27,438	29,293
Reserve for unfunded lending commitments: Beginning balance	1,487	866
Reserve for unfunded lending commitments: Provision for losses	(118)	590
Reserve for unfunded lending commitments: Ending balance	1,369	1,456
Total allowance for credit losses	28,807	30,749
Allowance for loan losses: Individually evaluated		174
Allowance for loan losses: Collectively evaluated	27,438	29,119
Reserve for unfunded lending commitments: Collectively evaluated	1,369	1,456
Loans: Individually evaluated for impairment		929
Loans: Collectively evaluated for impairment	1,525,129	1,556,845
Total loans	1,525,129	1,557,774	$ 1,577,347
Consumer [Member] | Non-Purchased Credit Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Charge-offs	(3,363)	(2,680)
Allowance for loan losses: Recoveries	838	1,528
Allowance for loan losses: Net provision for loan losses	$ 1,842	$ 1,516

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses (Composition of Nonaccrual Loans and Without an Allowance for Loan Loss by Portfolio Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	$ 54,344	$ 38,991
Nonaccrual without allowance for loan loss	13,212	4,691
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	1,501	1,240
Nonaccrual without allowance for loan loss	1,120	1,174
Total Commercial [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	340	309
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	30,111	25,269
Nonaccrual without allowance for loan loss	1,135	1,884
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	6,697	6,692
Total Commercial And Industrial [Member] | Total Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	15,695	5,481
Nonaccrual without allowance for loan loss	10,957	1,633
Total Commercial And Industrial [Member] | Total Commercial [Member] | Commercial Non-Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	13,302	4,020
Nonaccrual without allowance for loan loss	10,273	941
Total Commercial And Industrial [Member] | Total Commercial [Member] | Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Nonaccrual	2,393	1,461
Nonaccrual without allowance for loan loss	$ 684	$ 692

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses (Provides Detail by Portfolio Class for Reportable MEFDs) (Details) - Modified Loans To Borrowers Experiencing Financial Difficulty [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Financing Receivable, Modifications [Line Items]
Total reportable modified loans, Balance	$ 1,618
Reportable modified loans percentage of portfolio class	0.01%
Total Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total reportable modified loans, Balance	$ 1,618
Reportable modified loans percentage of portfolio class	0.01%
Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total reportable modified loans, Balance	$ 934
Reportable modified loans percentage of portfolio class	0.01%
Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total reportable modified loans, Balance	$ 684
Reportable modified loans percentage of portfolio class	0.02%

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses (Aging Analysis of Past Due Loans by Portfolio Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 23,404,523	$ 23,114,046	$ 21,323,341
Recorded Investment > 90 Days and Accruing	13,155	4,585
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	73,333	65,080
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	31,975	38,779
Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	34,845	28,372
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	140,153	132,231
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	23,264,370	22,981,815
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,758,455	3,560,991	3,563,299
Recorded Investment > 90 Days and Accruing	1,214
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	175	879
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member] | Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,653	1,174
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,828	2,053
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,755,627	3,558,938
Total Commercial [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,726,916	1,703,592	1,286,655
Recorded Investment > 90 Days and Accruing	126	54
Total Commercial [Member] | Construction and Land Development [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,304	4,029
Total Commercial [Member] | Construction and Land Development [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	359	242
Total Commercial [Member] | Construction and Land Development [Member] | Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	217	133
Total Commercial [Member] | Construction and Land Development [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,880	4,404
Total Commercial [Member] | Construction and Land Development [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,724,036	1,699,188
Total Commercial [Member] | Total Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	13,064,230	13,179,511	12,452,713
Recorded Investment > 90 Days and Accruing	9,891	2,619
Total Commercial [Member] | Total Commercial And Industrial [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	34,361	23,119
Total Commercial [Member] | Total Commercial And Industrial [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	19,055	24,675
Total Commercial [Member] | Total Commercial And Industrial [Member] | Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	13,596	5,312
Total Commercial [Member] | Total Commercial And Industrial [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	67,012	53,106
Total Commercial [Member] | Total Commercial And Industrial [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	12,997,218	13,126,405
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	10,013,482	10,146,453	9,584,480
Recorded Investment > 90 Days and Accruing	8,492	996
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	31,691	4,050
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	17,026	21,329
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member] | Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	11,029	3,418
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	59,746	28,797
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	9,953,736	10,117,656
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,050,748	3,033,058	2,868,233
Recorded Investment > 90 Days and Accruing	1,399	1,623
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,670	19,069
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,029	3,346
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member] | Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,567	1,894
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	7,266	24,309
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,043,482	3,008,749
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,329,793	3,092,605	2,462,900
Recorded Investment > 90 Days and Accruing	167	293
Residential Mortgages [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	29,903	28,208
Residential Mortgages [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	8,055	11,056
Residential Mortgages [Member] | Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	13,684	17,346
Residential Mortgages [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	51,642	56,610
Residential Mortgages [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,278,151	3,035,995
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,525,129	1,577,347	$ 1,557,774
Recorded Investment > 90 Days and Accruing	1,757	1,619
Consumer [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	6,590	8,845
Consumer [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	4,506	2,806
Consumer [Member] | Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	4,695	4,407
Consumer [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	15,791	16,058
Consumer [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 1,509,338	$ 1,561,289

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses (Credit Quality Indicators by Segment and Portfolio Class) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Pass-Watch [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 277,067
Total Commercial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	18,549,601	$ 18,444,094
Total Commercial [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	13,064,230	13,179,511
Total Commercial [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	17,798,102	17,684,578
Total Commercial [Member] | Pass [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	12,448,333	12,553,174
Total Commercial [Member] | Pass-Watch [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	455,978	457,620
Total Commercial [Member] | Pass-Watch [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	329,758	333,936
Total Commercial [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	64,275	90,253
Total Commercial [Member] | Special Mention [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	62,550	86,247
Total Commercial [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	231,246	211,643
Total Commercial [Member] | Substandard [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	223,589	206,154
Residential Mortgages [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,329,793	3,092,605
Residential Mortgages [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,299,682	3,066,319
Residential Mortgages [Member] | Nonperforming [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	30,111	26,286
Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,525,129	1,577,347
Consumer [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,518,431	1,570,186
Consumer [Member] | Nonperforming [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	6,698	7,161
Residential Mortgage and Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	4,854,922	4,669,952
Residential Mortgage and Consumer [Member] | Performing [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	4,818,113	4,636,505
Residential Mortgage and Consumer [Member] | Nonperforming [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	36,809	33,447
Commercial Non-Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	10,013,482	10,146,453
Commercial Non-Real Estate [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	9,511,047	9,641,117
Commercial Non-Real Estate [Member] | Pass-Watch [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans		284,843
Commercial Non-Real Estate [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	54,998	79,980
Commercial Non-Real Estate [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	170,370	140,513
Commercial Non-Real Estate [Member] | Total Commercial [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	10,013,482	10,146,453
Commercial Non-Real Estate [Member] | Total Commercial [Member] | Pass [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	9,511,047	9,641,117
Commercial Non-Real Estate [Member] | Total Commercial [Member] | Pass-Watch [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	277,067	284,843
Commercial Non-Real Estate [Member] | Total Commercial [Member] | Special Mention [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	54,998	79,980
Commercial Non-Real Estate [Member] | Total Commercial [Member] | Substandard [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	170,370	140,513
Commercial Real Estate - Owner Occupied [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,050,748	3,033,058
Commercial Real Estate - Owner Occupied [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	2,937,286	2,912,057
Commercial Real Estate - Owner Occupied [Member] | Pass-Watch [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	52,691	49,093
Commercial Real Estate - Owner Occupied [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	7,552	6,267
Commercial Real Estate - Owner Occupied [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	53,219	65,641
Commercial Real Estate - Owner Occupied [Member] | Total Commercial [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,050,748	3,033,058
Commercial Real Estate - Owner Occupied [Member] | Total Commercial [Member] | Pass [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	2,937,286	2,912,057
Commercial Real Estate - Owner Occupied [Member] | Total Commercial [Member] | Pass-Watch [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	52,691	49,093
Commercial Real Estate - Owner Occupied [Member] | Total Commercial [Member] | Special Mention [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	7,552	6,267
Commercial Real Estate - Owner Occupied [Member] | Total Commercial [Member] | Substandard [Member] | Total Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	53,219	65,641
Commercial Real Estate - Income Producing [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,758,455	3,560,991
Commercial Real Estate - Income Producing [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,633,440	3,440,648
Commercial Real Estate - Income Producing [Member] | Pass-Watch [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	116,360	111,587
Commercial Real Estate - Income Producing [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,534	3,810
Commercial Real Estate - Income Producing [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	7,121	4,946
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,758,455	3,560,991
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,633,440	3,440,648
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Pass-Watch [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	116,360	111,587
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,534	3,810
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	7,121	4,946
Construction and Land Development [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,726,916	1,703,592
Construction and Land Development [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,716,329	1,690,756
Construction and Land Development [Member] | Pass-Watch [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	9,860	12,097
Construction and Land Development [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	191	196
Construction and Land Development [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	536	543
Construction and Land Development [Member] | Total Commercial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,726,916	1,703,592
Construction and Land Development [Member] | Total Commercial [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,716,329	1,690,756
Construction and Land Development [Member] | Total Commercial [Member] | Pass-Watch [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	9,860	12,097
Construction and Land Development [Member] | Total Commercial [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	191	196
Construction and Land Development [Member] | Total Commercial [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 536	$ 543

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses (Disaggregation of Credit Quality Disclosures) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	$ 18,434
Term Loans, Amortized Cost Basis by Origination Year, 2022	54,455
Term Loans, Amortized Cost Basis by Origination Year, 2021	32,893
Term Loans, Amortized Cost Basis by Origination Year, 2020	30,343
Term Loans, Amortized Cost Basis by Origination Year, 2019	7,487
Term Loans, Amortized Cost Basis by Origination Year, Prior	58,113
Revolving Loans	73,146
Revolving Loans Converted to Term Loans	2,196
Notes Receivable Gross	277,067
Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	18,549,601	$ 18,444,094
Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	17,798,102	17,684,578
Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	455,978	457,620
Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	64,275	90,253
Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	231,246	211,643
Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	173,266	632,397
Term Loans, Amortized Cost Basis by Origination Year, 2022	631,095	696,538
Term Loans, Amortized Cost Basis by Origination Year, 2021	803,134	519,421
Term Loans, Amortized Cost Basis by Origination Year, 2020	516,872	193,627
Term Loans, Amortized Cost Basis by Origination Year, 2019	188,842	109,755
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,013,546	937,720
Revolving Loans	3,038	3,147
Notes Receivable Gross	3,329,793	3,092,605
Residential Mortgages [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	173,196	631,339
Term Loans, Amortized Cost Basis by Origination Year, 2022	628,643	694,104
Term Loans, Amortized Cost Basis by Origination Year, 2021	800,082	518,705
Term Loans, Amortized Cost Basis by Origination Year, 2020	516,534	192,431
Term Loans, Amortized Cost Basis by Origination Year, 2019	187,232	107,675
Term Loans, Amortized Cost Basis by Origination Year, Prior	990,957	918,918
Revolving Loans	3,038	3,147
Notes Receivable Gross	3,299,682	3,066,319
Residential Mortgages [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	70	1,058
Term Loans, Amortized Cost Basis by Origination Year, 2022	2,452	2,434
Term Loans, Amortized Cost Basis by Origination Year, 2021	3,052	716
Term Loans, Amortized Cost Basis by Origination Year, 2020	338	1,196
Term Loans, Amortized Cost Basis by Origination Year, 2019	1,610	2,080
Term Loans, Amortized Cost Basis by Origination Year, Prior	22,589	18,802
Notes Receivable Gross	30,111	26,286
Residential Mortgages [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, Prior	20
Notes Receivable Gross	20
Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	31,698	103,935
Term Loans, Amortized Cost Basis by Origination Year, 2022	83,478	58,446
Term Loans, Amortized Cost Basis by Origination Year, 2021	54,262	45,869
Term Loans, Amortized Cost Basis by Origination Year, 2020	41,453	63,473
Term Loans, Amortized Cost Basis by Origination Year, 2019	53,823	41,940
Term Loans, Amortized Cost Basis by Origination Year, Prior	73,826	43,830
Revolving Loans	1,182,270	1,213,417
Revolving Loans Converted to Term Loans	4,319	6,437
Notes Receivable Gross	1,525,129	1,577,347
Consumer [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	31,666	103,742
Term Loans, Amortized Cost Basis by Origination Year, 2022	83,306	58,248
Term Loans, Amortized Cost Basis by Origination Year, 2021	53,900	45,641
Term Loans, Amortized Cost Basis by Origination Year, 2020	40,880	62,715
Term Loans, Amortized Cost Basis by Origination Year, 2019	53,213	41,559
Term Loans, Amortized Cost Basis by Origination Year, Prior	69,745	40,489
Revolving Loans	1,182,108	1,212,958
Revolving Loans Converted to Term Loans	3,613	4,834
Notes Receivable Gross	1,518,431	1,570,186
Consumer [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	32	193
Term Loans, Amortized Cost Basis by Origination Year, 2022	172	198
Term Loans, Amortized Cost Basis by Origination Year, 2021	362	228
Term Loans, Amortized Cost Basis by Origination Year, 2020	573	758
Term Loans, Amortized Cost Basis by Origination Year, 2019	610	381
Term Loans, Amortized Cost Basis by Origination Year, Prior	4,081	3,341
Revolving Loans	162	459
Revolving Loans Converted to Term Loans	706	1,603
Notes Receivable Gross	6,698	7,161
Consumer [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2022	294
Term Loans, Amortized Cost Basis by Origination Year, 2021	329
Term Loans, Amortized Cost Basis by Origination Year, 2020	43
Term Loans, Amortized Cost Basis by Origination Year, 2019	152
Term Loans, Amortized Cost Basis by Origination Year, Prior	236
Revolving Loans	2,013
Revolving Loans Converted to Term Loans	296
Notes Receivable Gross	3,363
Residential Mortgage and Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	4,854,922	4,669,952
Residential Mortgage and Consumer [Member] | Performing [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	4,818,113	4,636,505
Residential Mortgage and Consumer [Member] | Nonperforming [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	36,809	33,447
Commercial Non-Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	515,536	2,728,906
Term Loans, Amortized Cost Basis by Origination Year, 2022	2,466,985	1,517,070
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,409,547	725,405
Term Loans, Amortized Cost Basis by Origination Year, 2020	655,851	607,672
Term Loans, Amortized Cost Basis by Origination Year, 2019	538,466	288,376
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,029,679	815,603
Revolving Loans	3,344,407	3,324,505
Revolving Loans Converted to Term Loans	53,011	138,916
Notes Receivable Gross	10,013,482	10,146,453
Commercial Non-Real Estate [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	443,067	2,600,656
Term Loans, Amortized Cost Basis by Origination Year, 2022	2,385,284	1,450,689
Term Loans, Amortized Cost Basis by Origination Year, 2021	1,362,105	679,355
Term Loans, Amortized Cost Basis by Origination Year, 2020	592,762	569,842
Term Loans, Amortized Cost Basis by Origination Year, 2019	505,331	267,025
Term Loans, Amortized Cost Basis by Origination Year, Prior	958,298	763,122
Revolving Loans	3,214,349	3,193,769
Revolving Loans Converted to Term Loans	49,851	116,659
Notes Receivable Gross	9,511,047	9,641,117
Commercial Non-Real Estate [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023		68,307
Term Loans, Amortized Cost Basis by Origination Year, 2022		38,949
Term Loans, Amortized Cost Basis by Origination Year, 2021		31,841
Term Loans, Amortized Cost Basis by Origination Year, 2020		11,757
Term Loans, Amortized Cost Basis by Origination Year, 2019		8,237
Term Loans, Amortized Cost Basis by Origination Year, Prior		49,577
Revolving Loans		66,339
Revolving Loans Converted to Term Loans		9,836
Notes Receivable Gross		284,843
Commercial Non-Real Estate [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	32,611	30,276
Term Loans, Amortized Cost Basis by Origination Year, 2022	5,560	13,625
Term Loans, Amortized Cost Basis by Origination Year, 2021	522	2,443
Term Loans, Amortized Cost Basis by Origination Year, 2020	1,837	4,406
Term Loans, Amortized Cost Basis by Origination Year, 2019	4,198	322
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,145	1,654
Revolving Loans	8,984	25,184
Revolving Loans Converted to Term Loans	141	2,070
Notes Receivable Gross	54,998	79,980
Commercial Non-Real Estate [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	21,424	29,667
Term Loans, Amortized Cost Basis by Origination Year, 2022	21,686	13,807
Term Loans, Amortized Cost Basis by Origination Year, 2021	14,027	11,766
Term Loans, Amortized Cost Basis by Origination Year, 2020	30,909	21,667
Term Loans, Amortized Cost Basis by Origination Year, 2019	21,450	12,792
Term Loans, Amortized Cost Basis by Origination Year, Prior	12,123	1,250
Revolving Loans	47,928	39,213
Revolving Loans Converted to Term Loans	823	10,351
Notes Receivable Gross	170,370	140,513
Commercial Non-Real Estate [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2022	309
Term Loans, Amortized Cost Basis by Origination Year, 2021	170
Term Loans, Amortized Cost Basis by Origination Year, 2020	463
Term Loans, Amortized Cost Basis by Origination Year, 2019	12
Term Loans, Amortized Cost Basis by Origination Year, Prior	33
Revolving Loans	2,993
Revolving Loans Converted to Term Loans	548
Notes Receivable Gross	4,528
Commercial Real Estate - Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	106,497	657,149
Term Loans, Amortized Cost Basis by Origination Year, 2022	659,286	656,588
Term Loans, Amortized Cost Basis by Origination Year, 2021	646,839	548,851
Term Loans, Amortized Cost Basis by Origination Year, 2020	538,318	350,150
Term Loans, Amortized Cost Basis by Origination Year, 2019	336,202	285,083
Term Loans, Amortized Cost Basis by Origination Year, Prior	714,567	480,548
Revolving Loans	36,191	48,623
Revolving Loans Converted to Term Loans	12,848	6,066
Notes Receivable Gross	3,050,748	3,033,058
Commercial Real Estate - Owner Occupied [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	86,006	630,121
Term Loans, Amortized Cost Basis by Origination Year, 2022	643,498	650,742
Term Loans, Amortized Cost Basis by Origination Year, 2021	641,601	537,849
Term Loans, Amortized Cost Basis by Origination Year, 2020	526,654	328,364
Term Loans, Amortized Cost Basis by Origination Year, 2019	315,352	265,437
Term Loans, Amortized Cost Basis by Origination Year, Prior	677,090	447,707
Revolving Loans	34,237	46,730
Revolving Loans Converted to Term Loans	12,848	5,107
Notes Receivable Gross	2,937,286	2,912,057
Commercial Real Estate - Owner Occupied [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	1,985	7,129
Term Loans, Amortized Cost Basis by Origination Year, 2022	8,785	5,299
Term Loans, Amortized Cost Basis by Origination Year, 2021	4,558	3,743
Term Loans, Amortized Cost Basis by Origination Year, 2020	3,668	13,301
Term Loans, Amortized Cost Basis by Origination Year, 2019	15,513	10,872
Term Loans, Amortized Cost Basis by Origination Year, Prior	17,228	7,706
Revolving Loans	954	893
Revolving Loans Converted to Term Loans		150
Notes Receivable Gross	52,691	49,093
Commercial Real Estate - Owner Occupied [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2022	46
Term Loans, Amortized Cost Basis by Origination Year, 2021		544
Term Loans, Amortized Cost Basis by Origination Year, 2020	543	822
Term Loans, Amortized Cost Basis by Origination Year, 2019	603	1,231
Term Loans, Amortized Cost Basis by Origination Year, Prior	6,360	3,670
Notes Receivable Gross	7,552	6,267
Commercial Real Estate - Owner Occupied [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	18,506	19,899
Term Loans, Amortized Cost Basis by Origination Year, 2022	6,957	547
Term Loans, Amortized Cost Basis by Origination Year, 2021	680	6,715
Term Loans, Amortized Cost Basis by Origination Year, 2020	7,453	7,663
Term Loans, Amortized Cost Basis by Origination Year, 2019	4,734	7,543
Term Loans, Amortized Cost Basis by Origination Year, Prior	13,889	21,465
Revolving Loans	1,000	1,000
Revolving Loans Converted to Term Loans		809
Notes Receivable Gross	53,219	65,641
Commercial Real Estate - Income Producing [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	145,771	896,199
Term Loans, Amortized Cost Basis by Origination Year, 2022	889,469	813,448
Term Loans, Amortized Cost Basis by Origination Year, 2021	890,316	721,984
Term Loans, Amortized Cost Basis by Origination Year, 2020	766,516	443,633
Term Loans, Amortized Cost Basis by Origination Year, 2019	420,958	245,617
Term Loans, Amortized Cost Basis by Origination Year, Prior	530,212	319,156
Revolving Loans	115,148	113,954
Revolving Loans Converted to Term Loans	65	7,000
Notes Receivable Gross	3,758,455	3,560,991
Commercial Real Estate - Income Producing [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	122,528	894,522
Term Loans, Amortized Cost Basis by Origination Year, 2022	887,881	795,378
Term Loans, Amortized Cost Basis by Origination Year, 2021	889,960	660,235
Term Loans, Amortized Cost Basis by Origination Year, 2020	705,277	420,435
Term Loans, Amortized Cost Basis by Origination Year, 2019	398,028	232,145
Term Loans, Amortized Cost Basis by Origination Year, Prior	514,955	317,446
Revolving Loans	114,746	113,487
Revolving Loans Converted to Term Loans	65	7,000
Notes Receivable Gross	3,633,440	3,440,648
Commercial Real Estate - Income Producing [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	18,723	1,027
Term Loans, Amortized Cost Basis by Origination Year, 2022	1,191	18,070
Term Loans, Amortized Cost Basis by Origination Year, 2021	37	58,256
Term Loans, Amortized Cost Basis by Origination Year, 2020	59,847	20,865
Term Loans, Amortized Cost Basis by Origination Year, 2019	22,922	12,066
Term Loans, Amortized Cost Basis by Origination Year, Prior	13,238	836
Revolving Loans	402	467
Notes Receivable Gross	116,360	111,587
Commercial Real Estate - Income Producing [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	985	235
Term Loans, Amortized Cost Basis by Origination Year, 2021		708
Term Loans, Amortized Cost Basis by Origination Year, 2020	178	2,325
Term Loans, Amortized Cost Basis by Origination Year, 2019		166
Term Loans, Amortized Cost Basis by Origination Year, Prior	371	376
Notes Receivable Gross	1,534	3,810
Commercial Real Estate - Income Producing [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	3,535	415
Term Loans, Amortized Cost Basis by Origination Year, 2022	397
Term Loans, Amortized Cost Basis by Origination Year, 2021	319	2,785
Term Loans, Amortized Cost Basis by Origination Year, 2020	1,214	8
Term Loans, Amortized Cost Basis by Origination Year, 2019	8	1,240
Term Loans, Amortized Cost Basis by Origination Year, Prior	1,648	498
Notes Receivable Gross	7,121	4,946
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	3,758,455	3,560,991
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	3,633,440	3,440,648
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	116,360	111,587
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,534	3,810
Commercial Real Estate - Income Producing [Member] | Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	7,121	4,946
Construction and Land Development [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	157,905	672,003
Term Loans, Amortized Cost Basis by Origination Year, 2022	751,389	713,730
Term Loans, Amortized Cost Basis by Origination Year, 2021	548,653	149,222
Term Loans, Amortized Cost Basis by Origination Year, 2020	103,279	9,965
Term Loans, Amortized Cost Basis by Origination Year, 2019	8,510	15,620
Term Loans, Amortized Cost Basis by Origination Year, Prior	25,275	11,684
Revolving Loans	126,526	128,911
Revolving Loans Converted to Term Loans	5,379	2,457
Notes Receivable Gross	1,726,916	1,703,592
Construction and Land Development [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	155,497	663,735
Term Loans, Amortized Cost Basis by Origination Year, 2022	748,153	711,731
Term Loans, Amortized Cost Basis by Origination Year, 2021	545,932	148,579
Term Loans, Amortized Cost Basis by Origination Year, 2020	103,183	9,198
Term Loans, Amortized Cost Basis by Origination Year, 2019	7,786	15,360
Term Loans, Amortized Cost Basis by Origination Year, Prior	24,241	10,854
Revolving Loans	126,158	128,842
Revolving Loans Converted to Term Loans	5,379	2,457
Notes Receivable Gross	1,716,329	1,690,756
Construction and Land Development [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023	2,408	8,233
Term Loans, Amortized Cost Basis by Origination Year, 2022	3,185	1,944
Term Loans, Amortized Cost Basis by Origination Year, 2021	2,670	643
Term Loans, Amortized Cost Basis by Origination Year, 2020	96	559
Term Loans, Amortized Cost Basis by Origination Year, 2019	522	199
Term Loans, Amortized Cost Basis by Origination Year, Prior	611	450
Revolving Loans	368	69
Notes Receivable Gross	9,860	12,097
Construction and Land Development [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2020		196
Term Loans, Amortized Cost Basis by Origination Year, 2019	191
Notes Receivable Gross	191	196
Construction and Land Development [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2023		35
Term Loans, Amortized Cost Basis by Origination Year, 2022	51	55
Term Loans, Amortized Cost Basis by Origination Year, 2021	51
Term Loans, Amortized Cost Basis by Origination Year, 2020		12
Term Loans, Amortized Cost Basis by Origination Year, 2019	11	61
Term Loans, Amortized Cost Basis by Origination Year, Prior	423	380
Notes Receivable Gross	536	543
Construction and Land Development [Member] | Gross Charge-offs [Member]
Accounts Notes And Loans Receivable [Line Items]
Term Loans, Amortized Cost Basis by Origination Year, 2022	7
Term Loans, Amortized Cost Basis by Origination Year, 2021	54
Notes Receivable Gross	61
Construction and Land Development [Member] | Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,726,916	1,703,592
Construction and Land Development [Member] | Total Commercial [Member] | Pass [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	1,716,329	1,690,756
Construction and Land Development [Member] | Total Commercial [Member] | Pass-Watch [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	9,860	12,097
Construction and Land Development [Member] | Total Commercial [Member] | Special Mention [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	191	196
Construction and Land Development [Member] | Total Commercial [Member] | Substandard [Member]
Accounts Notes And Loans Receivable [Line Items]
Notes Receivable Gross	$ 536	$ 543

Short-Term Borrowings (Short-Te

Short-Term Borrowings (Short-Term Borrowings) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Short-Term Debt [Line Items]
Amount outstanding at period end	$ 3,519,497		$ 1,871,271
Federal Funds Purchased [Member]
Short-Term Debt [Line Items]
Amount outstanding at period end	$ 350		$ 1,850
Weighted-average interest at period end	4.40%		3.90%
Average amount outstanding during period	$ 8,411	$ 2,387
Maximum amount at any month end during period	$ 1,850	$ 2,350
Weighted-average interest rate during period	5.11%	0.28%
Securities Sold under Agreements to Repurchase [Member]
Short-Term Debt [Line Items]
Amount outstanding at period end	$ 419,147		$ 444,421
Weighted-average interest at period end	0.95%		0.53%
Average amount outstanding during period	$ 445,773	$ 587,508
Maximum amount at any month end during period	$ 499,011	$ 640,592
Weighted-average interest rate during period	0.69%	0.06%
FHLB Borrowings [Member]
Short-Term Debt [Line Items]
Amount outstanding at period end	$ 3,100,000	$ 3,100,000	$ 1,425,000
Weighted-average interest at period end	4.99%		4.70%
Average amount outstanding during period	$ 1,644,444	1,100,011
Maximum amount at any month end during period	$ 3,100,000	$ 1,100,000
Weighted-average interest rate during period	4.74%	0.49%

Short-Term Borrowings (Narrativ

Short-Term Borrowings (Narrative) (Details) $ in Thousands		3 Months Ended	12 Months Ended
	May 04, 2023 USD ($)	Mar. 31, 2022 USD ($) Item	Dec. 31, 2022 USD ($) Item	Mar. 31, 2023 USD ($)
Short-Term Debt [Line Items]
Short-term borrowings			$ 1,871,271	$ 3,519,497
FHLB Borrowings [Member]
Short-Term Debt [Line Items]
Short-term borrowings		$ 3,100,000	$ 1,425,000	$ 3,100,000
FHLB Borrowings [Member] | FHLB Borrowings, Redemption Period One [Member] | Fixed-rate Whole Loan Advances and Term Notes [Member]
Short-Term Debt [Line Items]
Number of fixed rate short-term borrowings | Item		5	1
Short-term maturity year		2023	2023
Subsequent Event [Member] | FHLB Borrowings [Member]
Short-Term Debt [Line Items]
Repayment of short-term borrowings	$ 1,450,000

Derivatives (Fair Values of Der

Derivatives (Fair Values of Derivative Financial Instruments) (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2023	Dec. 31, 2022
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		$ 7,489,184	$ 7,936,239
Fair Values, Assets		$ 89,182	$ 110,734
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other Assets	Other Assets
Fair Values, Assets	[1]	$ 158,772	$ 219,935
Less: netting adjustment	[1],[2]	(66,827)	(110,438)
Total derivative assets/liabilities	[1]	91,945	109,497
Fair Values, Liabilities		85,772	32,601
Fair Values, Liabilities	[1]	216,228	285,592
Less: netting adjustment	[1],[2]	(27)	(81,471)
Other Liabilities [Member]
Derivatives Fair Value [Line Items]
Total derivative assets/liabilities	[1]	216,201	204,121
Derivatives Designated as Hedging Instruments [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		2,063,500	2,816,000
Fair Values, Assets	[1]	18,953	45,802
Fair Values, Liabilities	[1]	77,137	112,262
Derivatives Not Designated as Hedging Instruments [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		5,425,684	5,120,239
Fair Values, Assets	[1]	139,819	174,133
Fair Values, Liabilities	[1]	139,091	173,330
Derivatives Not Designated as Hedging Instruments [Member] | Interest Rate Swaps [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		4,909,754	4,620,544
Fair Values, Assets	[1]	137,404	172,242
Fair Values, Liabilities	[1]	135,584	169,712
Derivatives Not Designated as Hedging Instruments [Member] | Risk Participation Agreements [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		279,357	298,729
Fair Values, Assets	[1]	2	1
Fair Values, Liabilities	[1]	18	13
Derivatives Not Designated as Hedging Instruments [Member] | Forward Commitments to Sell Residential Mortgage Loans [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		13,705	13,819
Fair Values, Assets	[1]		161
Fair Values, Liabilities	[1]	276	8
Derivatives Not Designated as Hedging Instruments [Member] | Interest Rate-Lock Commitments on Residential Mortgage Loans [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		34,048	10,930
Fair Values, Assets	[1]	720	8
Fair Values, Liabilities	[1]		113
Derivatives Not Designated as Hedging Instruments [Member] | To Be Announced (TBA) Securities [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		20,500	10,000
Fair Values, Assets	[1]	1	78
Fair Values, Liabilities	[1]	165	7
Derivatives Not Designated as Hedging Instruments [Member] | Foreign Exchange Forward Contracts [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		125,390	123,106
Fair Values, Assets	[1]	1,692	1,643
Fair Values, Liabilities	[1]	1,645	1,594
Derivatives Not Designated as Hedging Instruments [Member] | Visa Class B derivative contract [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		42,930	43,111
Fair Values, Liabilities	[1]	1,403	1,883
Cash Flow Hedge [Member] | Derivatives Designated as Hedging Instruments [Member] | Interest Rate Swaps - Variable Rate Loans [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		1,550,000	2,100,000
Fair Values, Assets	[1]		2,301
Fair Values, Liabilities	[1]	$ 77,137	$ 112,262
Fair Value Hedging [Member] | Derivatives Designated as Hedging Instruments [Member] | Interest Rate Swaps - Variable Rate Loans [Member]
Derivatives Fair Value [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other Assets	Other Assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Other Liabilities	Other Liabilities
Fair Value Hedging [Member] | Derivatives Designated as Hedging Instruments [Member] | Interest Rate Swaps - Securities [Member]
Derivatives Fair Value [Line Items]
Notional or Contractual Amount		$ 513,500	$ 716,000
Fair Values, Assets	[1]	$ 18,953	$ 43,501
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other Assets	Other Assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Other Liabilities	Other Liabilities
[1] Derivative assets and liabilities are reported at fair value in other assets or other liabilities, respectively, in the consolidated balance sheets. Represents balance sheet netting of derivative assets and liabilities for variation margin collateral held or placed with the same central clearing counterparty. See offsetting assets and liabilities for further information.

Derivatives (Narrative) (Detail

Derivatives (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Notional amount of derivatives	$ 7,489,184	$ 7,936,239
Fair value liability	1,400	1,900
Credit risk-related contingent features, net liability position	70,000	8,700
Credit risk-related contingent features, posted collateral	73,000	8,500
Derivatives Designated as Hedging Instruments [Member]
Derivative [Line Items]
Notional amount of derivatives	2,063,500	2,816,000
Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member]
Derivative [Line Items]
Amortization of accumulated other comprehensive loss on terminated cash flow hedges	2,900
Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] | Swap Agreement 3, Expires 2025 [Member]
Derivative [Line Items]
Notional amount of derivatives	$ 50,000
Derivative maturity expiration year	2025
Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] | Swap Agreement 4, Expires 2026 [Member]
Derivative [Line Items]
Notional amount of derivatives	$ 475,000
Derivative maturity expiration year	2026
Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] | Swap Agreement 5, Expires 2027 [Member]
Derivative [Line Items]
Notional amount of derivatives	$ 925,000
Derivative maturity expiration year	2027
Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] | Swap Agreement 6, Expires Thereafter [Member]
Derivative [Line Items]
Notional amount of derivatives	$ 100,000
Interest Rate Swaps [Member] | Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Amortization of accumulated other comprehensive loss on terminated cash flow hedges	16,600
Interest Rate Swaps - Securities [Member] | Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Notional amount of derivatives	513,500	$ 716,000
Derivative hedged item	494,500
Basis adjustment associated with hedged items	19,000
Interest Rate Swaps - Securities [Member] | Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member] | Commercial Mortgage-Backed Securities [Member]
Derivative [Line Items]
Amortized cost basis of closed portfolio of pre-payable securities	$ 559,200

Derivatives (Effects of Derivat

Derivatives (Effects of Derivative Instruments on the Statements of Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Derivative income reflected in income statement	$ (4,184)	$ 13,073
Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] | Interest Rate Swaps - Variable Rate Loans [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative income reflected in income statement	$ (8,001)	$ 6,754
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest and Fee Income, Loans and Leases Held-in-portfolio	Interest and Fee Income, Loans and Leases Held-in-portfolio
Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member] | Interest Rate Swaps - Securities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative income reflected in income statement	$ 2,750	$ 1,158
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Income, Securities, Operating, Taxable	Interest Income, Securities, Operating, Taxable
Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member] | Securities Termination [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative income reflected in income statement	$ 0	$ 1,620
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Debt and Equity Securities, Gain (Loss)	Debt and Equity Securities, Gain (Loss)
Derivatives Not Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative income reflected in income statement	$ 583	$ 2,349
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other	Noninterest Income, Other
Derivatives Not Designated as Hedging Instruments [Member] | Residential mortgage banking
Derivative Instruments, Gain (Loss) [Line Items]
Derivative income reflected in income statement	$ 484	$ 1,192
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income	Noninterest Income

Derivatives (Offsetting Derivat

Derivatives (Offsetting Derivative Assets and Liabilities Subject to Master Netting Arrangements) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross Amounts Recognized, Derivative Assets	$ 158,214	$ 223,072
Gross Amounts Offset in the Statement of Financial Condition, Derivative Assets	(69,032)	(112,338)
Net Amounts Presented in the Statement of Financial Condition, Derivative Assets	89,182	110,734
Gross Amounts Not Offset in the Statement of Financial Condition - Financial Instruments, Derivative Assets	85,772	32,601
Gross Amounts Not offset in the Statement of Financial Condition - Cash Collateral, Derivative Assets	109,617	27,852
Net Amounts Presented in the Statement of Financial Condition, Derivative Assets	113,027	105,985
Gross Amounts Recognized, Derivative Liabilities	85,797	116,395
Gross Amounts Offset in the Statement of Financial Condition, Derivative Liabilities	(25)	(83,794)
Net Amounts Presented in the Statement of Financial Condition, Derivative Liabilities	85,772	32,601
Gross Amounts Not Offset in the Statement of Financial Condition - Financial Instruments, Derivative Liabilities	85,772	32,601
Gross Amounts Not offset in the Statement of Financial Condition - Cash Collateral, Derivative Liabilities	0	0
Gross Amounts Not Offset in the Statement of Financial Condition - Net Amount, Derivatives Liabilities	$ 0	$ 0

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended
	Jan. 26, 2023	Apr. 22, 2021	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Equity, Class of Treasury Stock [Line Items]
Treasury stock shares			6,200,000		6,300,000
Treasury stock, Cost basis			$ 236.2		$ 238.6
Shares repurchased				350,000
2018 Stock Buyback Program [Member]
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized for repurchase	4,300,000	4,300,000
Stock repurchase expiration date	Dec. 31, 2024	Dec. 31, 2022
2018 Stock Buyback Program [Member] | Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Shares repurchased			1,700,000	350,000
Shares purchased average cost per share			$ 48.77	$ 52.82
Restricted Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Number of shares nonvested			600,000		700,000

Stockholders' Equity (Component

Stockholders' Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (772,182)	$ (53,935)
Net change in unrealized gain (loss)	100,944	(390,904)
Reclassification of net income or loss realized and included in earnings	9,520	(3,838)
Valuation adjustments to employee benefit plans	(1,836)
Amortization of unrealized net gain or loss on securities transferred to HTM	494	261
Income tax (expense) benefit	(24,405)	89,140
Ending Balance	(687,465)	(359,276)
Accumulated Other Comprehensive Loss Available for Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(584,408)	11,037
Net change in unrealized gain (loss)	80,958	(358,190)
Reclassification of net income or loss realized and included in earnings		1,707
Transfer of net unrealized loss from AFS to HTM securities portfolio		15,405
Income tax (expense) benefit	(18,224)	76,981
Ending Balance	(521,674)	(253,060)
Held to Maturity Securities Transferred from AFS [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(10,734)	153
Transfer of net unrealized loss from AFS to HTM securities portfolio		(15,405)
Amortization of unrealized net gain or loss on securities transferred to HTM	494	261
Income tax (expense) benefit	(111)	3,418
Ending Balance	(10,351)	(11,573)
Employee Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(97,952)	(80,946)
Reclassification of net income or loss realized and included in earnings	1,519	1,209
Valuation adjustments to employee benefit plans	(1,836)
Income tax (expense) benefit	71	(273)
Ending Balance	(98,198)	(80,010)
Gains and Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(79,093)	16,284
Net change in unrealized gain (loss)	19,280	(33,182)
Reclassification of net income or loss realized and included in earnings	8,001	(6,754)
Income tax (expense) benefit	(6,141)	9,014
Ending Balance	(57,953)	(14,638)
Equity Method Investment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	5	(463)
Net change in unrealized gain (loss)	706	468
Ending Balance	$ 711	$ 5

Stockholders' Equity (Line Item

Stockholders' Equity (Line Items in Consolidated Income Statements Affected by Amounts Reclassified from Accumulated Other Comprehensive Income) (Details) - Reclassification out of Accumulated Other Comprehensive Income [Member] - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications, net of tax	[1]	$ (7,762)	$ 2,301
Accumulated Other Comprehensive Loss Available for Sale Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss on sale of AFS securities	[1]		(1,707)
Tax effect	[1]		385
Net of tax	[1]		(1,322)
Held to Maturity Securities Transferred from AFS [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of unrealized net gain (loss) on securities transferred to HTM	[1]	(494)	(261)
Tax effect	[1]	111	59
Net of tax	[1]	(383)	(202)
Employee Benefit Plans [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of defined benefit pension and post-retirement items	[1],[2]	(1,519)	(1,209)
Tax effect	[1]	340	273
Net of tax	[1]	(1,179)	(936)
Gains and Losses on Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification of unrealized gain/(Loss) on cash flow hedges	[1]	(10,629)	3,875
Tax effect	[1]	2,393	(875)
Net of tax	[1]	(8,236)	3,000
Amortization of gain on terminated cash flow hedges	[1]	2,628	2,879
Tax effect	[1]	(592)	(650)
Net of tax	[1]	$ 2,036	2,229
Gains and Losses on Equity Method Investment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification of unrealized loss on equity method investment	[1]		(468)
Net of tax	[1]		$ (468)
[1] Amounts in parentheses indicate reduction in net income These AOCI components are included in the computation of net periodic pension and post-retirement cost that is reported with other noninterest

Other Noninterest Income (Compo

Other Noninterest Income (Components of Other Noninterest Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Other Income, Nonoperating [Abstract]
Income from bank-owned life insurance	$ 3,286	$ 3,545
Credit related fees	2,765	2,669
Income from derivatives	583	2,349
Other miscellaneous	4,584	6,434
Total other noninterest income	$ 11,218	$ 14,997

Other Noninterest Expense (Deta

Other Noninterest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Other Expense, Nonoperating [Abstract]
Corporate value and franchise taxes and other non-income taxes	$ 5,253	$ 4,248
Advertising	3,256	3,166
Telecommunications and postage	3,071	2,925
Entertainment and contributions	2,631	2,961
Tax credit investment amortization	1,401	1,004
Printing and supplies	990	1,003
Travel expense	1,046	660
Net other retirement expense	(3,655)	(6,772)
Other miscellaneous	8,124	9,045
Total other noninterest expense	$ 22,117	$ 18,240

Earnings Per Common Share (Comp

Earnings Per Common Share (Computation of Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income to common shareholders	$ 126,467	$ 123,478
Net income allocated to participating securities - basic and diluted	1,358	1,918
Net income allocated to common shareholders - basic and diluted	$ 125,109	$ 121,560
Weighted-average common shares - basic	86,018	86,660
Dilutive potential common shares	264	276
Weighted-average common shares - diluted	86,282	86,936
Earnings per common share: Basic	$ 1.45	$ 1.40
Earnings per common share: Diluted	$ 1.45	$ 1.40

Earnings Per Common Share (Narr

Earnings Per Common Share (Narrative) (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Antidilutive potential common shares excluded from calculation of earnings per share	34,157	231

Retirement Plans (Narrative) (D

Retirement Plans (Narrative) (Details)	3 Months Ended
	Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Newly eligible associates initial savings rate	3%
First 1% Of Contribution Saved [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching percentage	100%
Percentage of compensation saved	1%
Next 5% Of Contribution Saved [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching percentage	50%
Percentage of compensation saved	5%
Amended Hancock 401K Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Additional matching percentage	2%
Period of employment for eligibility	3 years
Amended Hancock 401K Plan [Member] | 4% Of Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching percentage	4%
Amended Hancock 401K Plan [Member] | 6% Of Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching percentage	6%
Amended Hancock 401K Plan [Member] | 2% Of Contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching percentage	2%

Retirement Plans (Components of

Retirement Plans (Components of Net Periodic Benefits Cost) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,980	$ 2,800
Interest cost	5,788	3,417
Expected return on plan assets	(11,178)	(11,475)
Amortization of net (gain) or loss and prior service costs	1,770	1,348
Net periodic benefit cost	(1,640)	(3,910)
Other Post-Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	(31)	25
Interest cost	216	77
Amortization of net (gain) or loss and prior service costs	(251)	(139)
Net periodic benefit cost	$ (66)	$ (37)

Share-Based Payment Arrangeme_3

Share-Based Payment Arrangements (Narrative) (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) Entity $ / shares shares
Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, outstanding	1,476
Number of shares, exercisable	1,476
Weighted average exercise price | $ / shares	$ 53.73
Aggregate intrinsic value | $	$ 0
Stock options exercised	0
Restricted and Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense | $	$ 66,300,000
Weighted-average period	3 years 4 months 24 days
Total fair value of shares vested | $	$ 7,100,000
Shares granted	582,348
Grant date fair value per share | $ / shares	$ 50.08
Performance Shares [Member] | Executive Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period	3 years
Performance Shares [Member] | Total Shareholder Return [Member] | Executive Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	41,495
Grant date fair value per share | $ / shares	$ 51.14
Vesting performance period	3 years
Number of peer group regional banks | Entity	50
Performance Shares [Member] | Total Shareholder Return [Member] | Executive Management [Member] | Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of maximum number of shares vested	200%
Performance Shares [Member] | Operating Earnings Per Share [Member] | Executive Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	41,495
Grant date fair value per share | $ / shares	$ 46.73
Vesting performance period	2 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	463,604
Maximum [Member] | Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining contractual term	1 year

Share-Based Payment Arrangeme_4

Share-Based Payment Arrangements (Summary of Nonvested Restricted and Performance Shares) (Details) - Restricted and Performance Shares [Member]	3 Months Ended
	Mar. 31, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Nonvested at Beginning | shares	1,431,515
Number of Shares, Granted | shares	582,348
Number of Shares, Vested | shares	(182,901)
Number of Shares, Forfeited | shares	(71,086)
Number of Shares, Nonvested at Ending | shares	1,759,876
Weighted Average Grant Date Fair Value, Nonvested at Beginning | $ / shares	$ 40.95
Weighted Average Grant Date Fair Value, Granted | $ / shares	50.08
Weighted Average Grant Date Fair Value, Vested | $ / shares	47.42
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	39.65
Weighted Average Grant Date Fair Value, Nonvested at Ending | $ / shares	$ 43.36

Commitments and Contingencies_2

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Reserve for unfunded lending commitments	$ 32,014	$ 33,309	$ 30,710	$ 29,334

Commitments and Contingencies_3

Commitments and Contingencies (Off-Balance Sheet Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Commitments to Extend Credit [Member]
Loss Contingencies [Line Items]
Contract amounts	$ 10,285,535	$ 10,202,464
Letters of Credit [Member]
Loss Contingencies [Line Items]
Contract amounts	$ 430,026	$ 400,505

Fair Value Measurements (Financ

Fair Value Measurements (Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		$ 89,182	$ 110,734
Derivative liabilities		85,772	32,601
Total recurring fair value measurements - liabilities		1,400	1,900
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		5,565,620	5,556,041
Mortgage loans held for sale		14,923	10,843
Derivative assets	[1]	91,945	109,497
Total fair value measurements		5,672,488	5,676,381
Derivative liabilities	[1]	216,201	204,121
Total recurring fair value measurements - liabilities		216,201	204,121
Recurring [Member] | U.S. Treasury And Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		111,515	110,865
Recurring [Member] | Municipal Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		204,469	203,092
Recurring [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		20,124	21,080
Recurring [Member] | Residential Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		2,219,264	2,256,986
Recurring [Member] | Commercial Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		2,942,605	2,893,430
Recurring [Member] | Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		67,643	70,588
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		5,565,620	5,556,041
Mortgage loans held for sale		14,923	10,843
Derivative assets	[1]	91,945	109,497
Total fair value measurements		5,672,488	5,676,381
Derivative liabilities	[1]	214,798	202,238
Total recurring fair value measurements - liabilities		214,798	202,238
Recurring [Member] | Level 2 [Member] | U.S. Treasury And Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		111,515	110,865
Recurring [Member] | Level 2 [Member] | Municipal Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		204,469	203,092
Recurring [Member] | Level 2 [Member] | Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		20,124	21,080
Recurring [Member] | Level 2 [Member] | Residential Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		2,219,264	2,256,986
Recurring [Member] | Level 2 [Member] | Commercial Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		2,942,605	2,893,430
Recurring [Member] | Level 2 [Member] | Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale debt securities		67,643	70,588
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	[1]	1,403	1,883
Total recurring fair value measurements - liabilities		$ 1,403	$ 1,883
[1] For further disaggregation of derivative assets and liabilities, see Note 5 - Derivatives.

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - Recurring [Member]	Mar. 31, 2023 shares
Visa Inc [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Number of shares of Visa Class B common stock	192,163
Investment Securities [Member] | Minimum [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Targeted duration	2 years
Investment Securities [Member] | Maximum [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Targeted duration	5 years 6 months

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Level 3 Fair Value Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Conversion rate adjustment	$ (283)
Level 3 [Member] | Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	1,883	$ 4,116
Cash settlement	(430)	(2,429)
Losses included in earnings	233	196
Ending balance	$ 1,403	$ 1,883

Fair Value Measurements (Overvi

Fair Value Measurements (Overview of the Valuation Techniques and Significant Unobservable Inputs) (Details) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Values, Liabilities		$ 85,772	$ 32,601
Maximum [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Values Utilized		12	12
Recurring [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Values, Liabilities	[1]	$ 216,201	$ 204,121
Recurring [Member] | Level 3 [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Values, Liabilities	[1]	1,403	1,883
Recurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Values, Liabilities		$ 1,403	$ 1,883
Recurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Minimum [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Time until resolution		3 months	3 months
Recurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Maximum [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Time until resolution		9 months	12 months
Recurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, VISA Class A Appreciation [Member] | Minimum [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Values Utilized		6	6
Recurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, VISA Class A Appreciation [Member] | Weighted Average [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Values Utilized		9	9
Recurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Conversion Rate [Member] | Minimum [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Values Utilized		1.60	1.61
Recurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Conversion Rate [Member] | Maximum [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Values Utilized		1.59	1.60
Recurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Conversion Rate [Member] | Weighted Average [Member]
Fair Value of Financial Instruments, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Values Utilized		1.5950	1.6030
[1] For further disaggregation of derivative assets and liabilities, see Note 5 - Derivatives.

Fair Value Measurements (Fina_2

Fair Value Measurements (Financial Assets Measured at Fair Value on Nonrecurring Basis) (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent loans individually evaluated for credit loss	$ 13,212	$ 4,692
Other real estate owned and foreclosed assets, net	1,976	2,017
Total fair value measurements	15,188	6,709
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent loans individually evaluated for credit loss	13,212	4,692
Total fair value measurements	13,212	4,692
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned and foreclosed assets, net	1,976	2,017
Total fair value measurements	$ 1,976	$ 2,017

Fair Value Measurements (Estima

Fair Value Measurements (Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Held to maturity securities	$ 2,825,064	$ 2,852,495
Loans held for sale	14,923	10,843
Derivative assets	89,182	110,734
Derivative liabilities	85,772	32,601
Total Fair Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, interest-bearing bank deposits, and federal funds sold	2,882,521	888,519
Available for sale securities	5,565,620	5,556,041
Held to maturity securities	2,623,760	2,615,398
Loans, net	22,984,009	22,137,375
Loans held for sale	23,436	26,385
Derivative assets	91,945	109,497
Deposits	29,587,071	29,041,635
Federal funds purchased	350	1,850
Securities sold under agreements to repurchase	419,147	444,421
FHLB short-term borrowings	3,100,275	1,425,000
Long-term debt	206,659	200,060
Derivative liabilities	216,201	204,121
Total Fair Value [Member] | Level 1 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, interest-bearing bank deposits, and federal funds sold	2,882,521	888,519
Federal funds purchased	350	1,850
Securities sold under agreements to repurchase	419,147	444,421
FHLB short-term borrowings		1,425,000
Total Fair Value [Member] | Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Available for sale securities	5,565,620	5,556,041
Held to maturity securities	2,623,760	2,615,398
Loans, net	13,212	4,692
Loans held for sale	23,436	26,385
Derivative assets	91,945	109,497
FHLB short-term borrowings	3,100,275
Long-term debt	206,659	200,060
Derivative liabilities	214,798	202,238
Total Fair Value [Member] | Level 3 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans, net	22,970,797	22,132,683
Deposits	29,587,071	29,041,635
Derivative liabilities	1,403	1,883
Carrying Amount [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, interest-bearing bank deposits, and federal funds sold	2,882,521	888,519
Available for sale securities	5,565,620	5,556,041
Held to maturity securities	2,825,064	2,852,495
Loans, net	23,095,138	22,806,257
Loans held for sale	23,436	26,385
Derivative assets	91,945	109,497
Deposits	29,613,070	29,070,349
Federal funds purchased	350	1,850
Securities sold under agreements to repurchase	419,147	444,421
FHLB short-term borrowings	3,100,000	1,425,000
Long-term debt	242,115	242,077
Derivative liabilities	$ 216,201	$ 204,121